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1.
Am J Respir Cell Mol Biol ; 70(5): 400-413, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38301267

RESUMO

Newborns with intrauterine growth restriction (IUGR) have a higher likelihood of developing pulmonary arterial hypertension (PAH) in adulthood. Although there is increasing evidence suggesting that pericytes play a role in regulating myofibroblast transdifferentiation and angiogenesis in malignant and cardiovascular diseases, their involvement in the pathogenesis of IUGR-related pulmonary hypertension and the underlying mechanisms remain incompletely understood. To address this issue, a study was conducted using a Sprague-Dawley rat model of IUGR-related pulmonary hypertension. Our investigation revealed increased proliferation and migration of pulmonary microvascular pericytes in IUGR-related pulmonary hypertension, accompanied by weakened endothelial-pericyte interactions. Through whole-transcriptome sequencing, Ddx5 (DEAD-box protein 5) was identified as one of the hub genes in pericytes. DDX5, a member of the RNA helicase family, plays a role in the regulation of ATP-dependent RNA helicase activities and cellular function. MicroRNAs have been implicated in the pathogenesis of PAH, and microRNA-205 (miR-205) regulates cell proliferation, migration, and angiogenesis. The results of dual-luciferase reporter assays confirmed the specific binding of miR-205 to Ddx5. Mechanistically, miR-205 negatively regulates Ddx5, leading to the degradation of ß-catenin by inhibiting the phosphorylation of Gsk3ß at serine 9. In vitro experiments showed the addition of miR-205 effectively ameliorated pericyte dysfunction. Furthermore, in vivo experiments demonstrated that miR-205 agomir could ameliorate pulmonary hypertension. Our findings indicated that the downregulation of miR-205 expression mediates pericyte dysfunction through the activation of Ddx5. Therefore, targeting the miR-205/Ddx5/p-Gsk3ß/ß-catenin axis could be a promising therapeutic approach for IUGR-related pulmonary hypertension.


Assuntos
Proliferação de Células , RNA Helicases DEAD-box , Epigênese Genética , Retardo do Crescimento Fetal , Glicogênio Sintase Quinase 3 beta , Hipertensão Pulmonar , MicroRNAs , Pericitos , Ratos Sprague-Dawley , Animais , Feminino , Humanos , Masculino , Ratos , beta Catenina/metabolismo , beta Catenina/genética , Movimento Celular/genética , RNA Helicases DEAD-box/metabolismo , RNA Helicases DEAD-box/genética , Retardo do Crescimento Fetal/metabolismo , Retardo do Crescimento Fetal/genética , Retardo do Crescimento Fetal/patologia , Glicogênio Sintase Quinase 3 beta/metabolismo , Glicogênio Sintase Quinase 3 beta/genética , Hipertensão Pulmonar/genética , Hipertensão Pulmonar/metabolismo , Hipertensão Pulmonar/patologia , MicroRNAs/genética , MicroRNAs/metabolismo , Pericitos/metabolismo , Pericitos/patologia
2.
J Cell Mol Med ; 28(9): e18351, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38693854

RESUMO

Coronary artery bypass grafting (CABG) is an effective treatment for coronary heart disease, with vascular transplantation as the key procedure. Intimal hyperplasia (IH) gradually leads to vascular stenosis, seriously affecting the curative effect of CABG. Mesenchymal stem cells (MSCs) were used to alleviate IH, but the effect was not satisfactory. This work aimed to investigate whether lncRNA MIR155HG could improve the efficacy of MSCs in the treatment of IH and to elucidate the role of the competing endogenous RNA (ceRNA). The effect of MIR155HG on MSCs function was investigated, while the proteins involved were assessed. IH was detected by HE and Van Gieson staining. miRNAs as the target of lncRNA were selected by bioinformatics analysis. qRT-PCR and dual-luciferase reporter assay were performed to verify the binding sites of lncRNA-miRNA. The apoptosis, Elisa and tube formation assay revealed the effect of ceRNA on the endothelial protection of MIR155HG-MSCs. We observed that MIR155HG improved the effect of MSCs on IH by promoting viability and migration. MIR155HG worked as a sponge for miR-205. MIR155HG/miR-205 significantly improved the function of MSCs, avoiding apoptosis and inducing angiogenesis. The improved therapeutic effects of MSCs on IH might be due to the ceRNA role of MIR155HG/miR-205.


Assuntos
Apoptose , Hiperplasia , Células-Tronco Mesenquimais , MicroRNAs , RNA Longo não Codificante , Animais , Humanos , Apoptose/genética , Movimento Celular/genética , Proliferação de Células/genética , Sobrevivência Celular/genética , Regulação da Expressão Gênica , Transplante de Células-Tronco Mesenquimais/métodos , Células-Tronco Mesenquimais/metabolismo , MicroRNAs/genética , MicroRNAs/metabolismo , RNA Endógeno Competitivo , RNA Longo não Codificante/genética , Túnica Íntima/patologia , Túnica Íntima/metabolismo , Ratos
3.
J Cell Mol Med ; 26(23): 5917-5928, 2022 12.
Artigo em Inglês | MEDLINE | ID: mdl-36403222

RESUMO

We are committed to finding host targets for influenza A therapeutics. The nucleoprotein (NP) plays an important role in influenza A virus replication and is an indispensable part of viral transcription and replication. Exploring endogenous substances that can modulate NP is critical for finding host targets. MicroRNAs (miRNAs, miR) are a novel class of powerful, endogenous gene expression regulators. Herein, we used miRanda to analyse the base complementarity between the NP gene and the 14 host miRNAs reported previously by us. MiRanda predicted that miR-431-5p, miR-744-3p and miR-205-5p could complement the NP gene. To understand the effect of these miRNAs on NP expression, we co-transfected 293 T cells with NP gene sequence containing above miRNAs binding site or full sequence of NP gene (transfected into pmirGlo or pcDNA3.1 vectors, respectively), and mimics of miR-205-5p, miR-431-5p and miR-744-3p. Dual luciferase reporter gene or Western blotting assays confirmed that miR-205-5p and miR-431-5p inhibit NP expression by binding with the miRNA binding site of NP gene. Further, we infected Mouse Lung Epithelial (MLE-12) cells overexpressing miR-205-5p and miR-431-5p with influenza A virus and performed Western blotting to examine NP expression. We found that NP expression was significantly reduced in MLE-12 cells overexpressing miR-205-5p during influenza A infection. The miR-205-5p overexpression-induced inhibition of influenza A replication could be attributed to the inhibition of NP expression. Further, we administered oseltamivir and Jinchai Antiviral Capsules (JC, an anti-influenza Chinese medicine) to influenza A virus-infected MLE-12 cells and mice. We found that miR-205-5p was significantly decreased increased in infected cells and lung tissues, and oseltamivir and JC could up-regulate miR-205-5p. In conclusion, we provide new evidence that miR-205-5p plays a role in regulating viral NP protein expression in combating influenza A and may be a potential target for influenza A therapy.


Assuntos
Vírus da Influenza A , MicroRNAs , Infecções por Orthomyxoviridae , Animais , Camundongos , Sítios de Ligação , MicroRNAs/genética , Oseltamivir , Infecções por Orthomyxoviridae/tratamento farmacológico , Infecções por Orthomyxoviridae/genética
4.
J Cell Mol Med ; 25(19): 9214-9227, 2021 10.
Artigo em Inglês | MEDLINE | ID: mdl-34428336

RESUMO

Silicosis is an occupational disease characterized by extensive pulmonary fibrosis, and the underlying pathological process remains uncertain. Herein, we explored the molecular mechanism by which microRNA-205-5p (miR-205-5p) affects the autophagy of alveolar macrophages (AMs) and pulmonary fibrosis in mice with silicosis through the E2F transcription factor 1 (E2F1)/S-phase kinase-associated protein 2 (SKP2)/Beclin1 axis. Alveolar macrophages (MH-S cells) were exposed to crystalline silica (CS) to develop an in vitro model, and mice were treated with CS to establish an in vivo model. Decreased Beclin1 and increased SKP2 and E2F1 were identified in mice with silicosis. We silenced or overexpressed miR-205-5p, E2F1, SKP2 and Beclin1 to investigate their potential roles in pulmonary fibrosis in vivo and autophagy in vitro. Recombinant adenovirus mRFP-GFP-LC3 was transduced into the MH-S cells to assay autophagic flow. Knocking down Beclin1 promoted pulmonary fibrosis and suppressed the autophagy. Co-immunoprecipitation and ubiquitination assays suggested that SKP2 induced K48-linked ubiquitination of Beclin1. Furthermore, chromatin immunoprecipitation-PCR revealed the site where E2F1 bound to the SKP2 promoter between 1638 bp and 1645 bp. As shown by dual-luciferase reporter gene assay, the transfection with miR-205-5p mimic inhibited the luciferase activity of the wild-type E2F1 3'untranslated region, suggesting that miR-205-5p targeted E2F1. Additionally, miR-205-5p overexpression increased autophagy and reduced the pulmonary fibrosis, while overexpression of E2F1 or SKP2 or inhibition of Beclin1 could annul this effect. The current study elucidated that miR-205-5p targeted E2F1, thereby inhibiting SKP2-mediated Beclin1 ubiquitination to promote macrophage autophagy and inhibit pulmonary fibrosis in mice with silicosis.


Assuntos
Autofagia/genética , Proteína Beclina-1/metabolismo , Fator de Transcrição E2F1/genética , MicroRNAs/genética , Proteínas Quinases Associadas a Fase S/metabolismo , Silicose/etiologia , Silicose/metabolismo , Animais , Linhagem Celular , Bases de Dados Genéticas , Modelos Animais de Doenças , Perfilação da Expressão Gênica , Regulação da Expressão Gênica , Humanos , Imuno-Histoquímica , Macrófagos Alveolares/metabolismo , Macrófagos Alveolares/patologia , Camundongos , Modelos Biológicos , Regiões Promotoras Genéticas , Proteólise , Fibrose Pulmonar/etiologia , Fibrose Pulmonar/metabolismo , Fibrose Pulmonar/patologia , Transdução de Sinais , Silicose/patologia , Ubiquitinação
5.
BMC Cancer ; 20(1): 1029, 2020 Oct 27.
Artigo em Inglês | MEDLINE | ID: mdl-33109127

RESUMO

BACKGROUND: Cervical cancer is the leading cause of cancer-related death in women worldwide. However, the mechanisms mediating the development and progression of cervical cancer are unclear. In this study, we aimed to elucidate the roles of microRNAs and a1-chimaerin (CHN1) protein in cervical cancer progression. METHODS: The expression of miR-205 and CHN1 protein was investigated by in situ hybridisation and immunohistochemistry. We predicted the target genes of miR-205 using software prediction and dual luciferase assays. The expression of mRNAs and proteins was tested by qRT-PCR and western blotting respectively. The ability of cell growth, migration and invasion was evaluated by CCK-8 and transwell. Cell apoptosis was analysed by flow cytometry analysis. RESULTS: We found that miR-205 and CHN1 were highly expressed in human cervical cancer tissue compared with paired normal cervical tissues. The CHN1 gene was shown to be targeted by miR-205 in HeLa cells. Interestingly, transfection with miR-205 mimic upregulated CHN1 mRNA and protein, while miR-205 inhibitor downregulated CHN1 in high-risk and human papilloma virus (HPV)-negative human cervical cancer cells in vitro,. These data suggested that miR-205 positively regulated the expression of CHN1. Furthermore, the miR-205 mimic promoted cell growth, apoptosis, migration, and invasion in high-risk and HPV-negative cervical cancer cells, while the miR-205 inhibitor blocked these biological processes. Knockdown of CHN1 obviously reduced the aggressive cellular behaviours induced by upregulation of miR-205, suggesting that miR-205 positively regulated CHN1 to mediate these cell behaviours during the development of cervical cancer. Furthermore, CHN1 was correlated with lymph node metastasis in clinical specimens. CONCLUSIONS: Our findings showed that miR-205 positively regulated CHN1 to mediate cell growth, apoptosis, migration, and invasion during cervical cancer development, particularly for high-risk HPV-type cervical cancer. These findings suggested that dysregulation of miR-205 and subsequent abnormalities in CHN1 expression promoted the oncogenic potential of human cervical cancer.


Assuntos
Quimerina 1/genética , Metástase Linfática/genética , MicroRNAs/genética , Regulação para Cima , Neoplasias do Colo do Útero/genética , Linhagem Celular Tumoral , Movimento Celular , Proliferação de Células , Quimerina 1/metabolismo , Feminino , Regulação Neoplásica da Expressão Gênica , Técnicas de Silenciamento de Genes , Células HeLa , Humanos , Neoplasias do Colo do Útero/metabolismo
6.
J Cell Mol Med ; 23(5): 3257-3270, 2019 05.
Artigo em Inglês | MEDLINE | ID: mdl-30729682

RESUMO

As a major class of regulatory genes in majority metazoans, microRNAs (miRs) play an important role in various diseases including diabetes mellitus (DM). Lack of androgens has previously been associated with DM-induced erectile dysfunction (DMED). In addition, the biological functioning of androgen is mediated by androgen receptor (AR). Herein, we sought to investigate whether miRs participate in AR-associated DMED. Sprague-Dawlay rats were employed to establish DMED models. After modelling, levels of miR-205 and AR in their cavernous bodies were measured. The relationship between miR-205 and AR was verified using a dual-luciferase reporter gene assay. The underlying regulatory mechanisms of miR-205 were investigated in concert with the treatment of mimics or inhibitors of miR-205, or AR overexpression in the cavernous smooth muscle cells (CSMCs) isolated from rats with DMED. Meanwhile, the effects of miR-205 and AR on cell proliferation and apoptosis were evaluated using MTT assay and flow cytometry respectively. Rats with DMED presented with increased miR-205 and decreased AR levels in the cavernous bodies. AR was identified as a target gene of miR-205. Down-regulation of miR-205 or up-regulation of AR could increase proliferation and inhibits apoptosis of CSMCs in addition to improvements in the erectile functioning of rats with DMED. In summary, miR-205 may contribute to the pathogenesis of DMED via down-regulation of AR expressions.


Assuntos
Complicações do Diabetes/genética , Disfunção Erétil/genética , MicroRNAs/genética , Receptores Androgênicos/genética , Androgênios/genética , Androgênios/metabolismo , Animais , Apoptose/genética , Seio Cavernoso/metabolismo , Seio Cavernoso/patologia , Proliferação de Células/genética , Complicações do Diabetes/fisiopatologia , Diabetes Mellitus Experimental/genética , Diabetes Mellitus Experimental/fisiopatologia , Modelos Animais de Doenças , Disfunção Erétil/complicações , Disfunção Erétil/fisiopatologia , Regulação da Expressão Gênica/genética , Humanos , Masculino , Miócitos de Músculo Liso/metabolismo , Miócitos de Músculo Liso/patologia , Pênis/metabolismo , Pênis/patologia , Ratos
7.
J Cell Physiol ; 234(10): 18626-18638, 2019 08.
Artigo em Inglês | MEDLINE | ID: mdl-31049956

RESUMO

Cervical cancer (CC) is a common gynecological cancer and a leading cause of cancer-related deaths in women globally. Therefore, this study explores the action of microRNA-205 (miR-205) in the invasion, migration, and angiogenesis of CC through binding to tumor suppressor lung cancer 1 (TSLC1). Initially, the microarray analysis was used to select the candidate gene and the regulatory microRNA. Then, the target relationship between miR-205 and TSLC1 as well as the expression of miR-205, TSLC1, and p-Akt/total Akt in CC cells were determined. Afterwards, CC cell invasion and migration were detected after the treatment of miR-205 mimics/inhibitors and short hairpin RNA against TSLC1. After coculture of cancer cells and vascular endothelial cells, cell proliferation, tube formation, and microvessel density (MVD) were detected to determine the roles of miR-205 in angiogenesis. Finally, tumor growth in nude mice was measured in vivo. TSLC1 was determined as the candidate gene, which was found to be targeted and negatively regulated by miR-205. Then, downregulated miR-205 or forced TSLC1 expression inhibited invasion, migration, and angiogenesis in CC, corresponding to suppressed cell proliferation, tube formation, and expression of IL-8, VEGF, and bFGF, as well as the inhibited activation of the Akt signaling pathway. Furthermore, downregulation of miR-205 was found to exert an inhibitory role in tumor formation and MVD by elevating TSLC1 in CC in vivo. This study demonstrated that downregulated miR-205 inhibited cell invasion, migration, and angiogenesis in CC by inactivating the Akt signaling pathway via TSLC1 upregulation.


Assuntos
Molécula 1 de Adesão Celular/metabolismo , Regulação para Baixo/genética , MicroRNAs/genética , Neovascularização Patológica/genética , Proteínas Proto-Oncogênicas c-akt/metabolismo , Transdução de Sinais , Neoplasias do Colo do Útero/irrigação sanguínea , Neoplasias do Colo do Útero/genética , Animais , Sequência de Bases , Carcinogênese/genética , Carcinogênese/patologia , Molécula 1 de Adesão Celular/genética , Linhagem Celular Tumoral , Movimento Celular/genética , Feminino , Regulação Neoplásica da Expressão Gênica , Humanos , Camundongos Endogâmicos BALB C , Camundongos Nus , MicroRNAs/metabolismo , Microvasos/patologia , Modelos Biológicos , Invasividade Neoplásica , Ligação Proteica , Regulação para Cima/genética , Neoplasias do Colo do Útero/patologia
8.
Cancer Cell Int ; 19: 281, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31719795

RESUMO

BACKGROUND: Recently, the impact of microRNAs (miRNAs) and exosome on ovarian cancer has been assessed in many studies. We aim to explore the mechanism of exosomes transferring miR-205 in ovarian cancer, and confirm its diagnostic value in ovarian cancer. METHODS: The expression of miR-205 of ovarian cancer patients and healthy people was detected by RT-qPCR, and the diagnostic value of miR-205 was evaluated. The exosomes derived from SKOV3 cells were identified. Ovarian cancer SKOV3 donor cells and receptor cells were used to measure the proliferation, migration, invasion, apoptosis and cell cycle by a series of experiments. The binding site between miR-205 and vascular endothelial growth factor A (VEGFA) was evaluated by bioinformatics tool and dual-luciferase reporter gene assay. RESULTS: MiR-205 was up-regulated in ovarian cancer, and up-regulated miR-205 could enhance the risk of ovarian cancer and was one of its risk factors. After SKOV3 cells-derived exosomes were transiently introduced with miR-205 mimics, the cell proliferation, migration and invasion in ovarian cancer were elevated, the apoptosis of ovarian cancer cells was attenuated, and the epithelial-mesenchymal transition (EMT) protein E-cadherin was down-regulated, while Vimentin was elevated. VEGFA was identified to be a target gene of miR-205. CONCLUSION: This study suggests that exosomes from donor ovarian cancer cell SKOV3 shuttled miR-205 could participate in the regulation of the proliferation, migration, invasion, apoptosis as well as EMT progression of receptor SKOV3 cells by targeting VEGFA.

9.
Int J Mol Sci ; 17(12)2016 Dec 07.
Artigo em Inglês | MEDLINE | ID: mdl-27941621

RESUMO

Extensive stromal interaction is one reason for the dismal outcome of biliary tract cancer (BTC) patients. Epithelial to mesenchymal transition (EMT) is involved in tumor invasion and metastasis and is partly regulated by microRNAs (miRs). This study explores the expression of anti-EMT miR200 family (miR141, -200a/b/c, -429) and miR205 as well as the EMT-related proteins E-cadherin and vimentin in a panel of BTC cell lines and clinical specimens by quantitative real-time polymerase chain reaction, Western blot and immunohistochemistry, respectively. MicroRNA expression was correlated to (i) the expression patterns of E-cadherin and vimentin; (ii) clinicopathological characteristics; and (iii) survival data. MicroRNA-200 family and miR205 were expressed in all BTC cells and clinical specimens. E-cadherin and vimentin showed a mutually exclusive expression pattern in both, in vitro and in vivo. Expression of miR200 family members positively correlated with E-cadherin and negatively with vimentin expression in BTC cells and specimens. High expression of miR200 family members (but not miR205) and E-cadherin was associated with longer survival, while low miR200 family and high vimentin expression was a predictor of unfavorable survival. Overall, the current study demonstrates the relevance of the miR200 family in EMT of BTC tumors and suggests these miRs as predictors for positive outcome.


Assuntos
Neoplasias do Sistema Biliar/genética , Neoplasias do Sistema Biliar/patologia , Transição Epitelial-Mesenquimal/genética , MicroRNAs/genética , Linhagem Celular Tumoral , Transição Epitelial-Mesenquimal/fisiologia , Feminino , Regulação Neoplásica da Expressão Gênica/genética , Regulação Neoplásica da Expressão Gênica/fisiologia , Humanos , RNA Mensageiro/genética
10.
Int J Urol ; 22(9): 867-77, 2015 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-26059417

RESUMO

OBJECTIVES: To investigate the functional roles of microRNA-205 in the modulation of novel cancer pathways in prostate cancer cells. METHODS: Functional studies of microRNA-205 were carried out to investigate cell proliferation, migration and invasion in prostate cancer cell lines (PC3 and DU145) by restoration of mature microRNA. In silico database and genome-wide gene expression analyses were carried out to identify molecular targets and pathways mediated by microRNA-205. Loss-of-function studies were applied to microRNA-205 target genes. RESULTS: Restoration of microRNA-205 in cancer cell lines significantly inhibited cancer cell migration and invasion. Our data showed that the centromere protein F gene was overexpressed in prostate cancer clinical specimens and was a direct target of microRNA-205 regulation. Silencing of centromere protein F significantly inhibited cancer cell migration and invasion. Furthermore, MCM7, an oncogenic gene functioning downstream of centromere protein F, was identified by si-centromere protein F transfectants in prostate cancer cells. CONCLUSIONS: Loss of tumor-suppressive microRNA-205 seems to enhance cancer cell migration and invasion in prostate cancer through direct regulation of centromere protein F. Our data describing pathways regulated by tumor-suppressive microRNA-205 provide new insights into the potential mechanisms of prostate cancer oncogenesis and metastasis.


Assuntos
Movimento Celular/genética , Proteínas Cromossômicas não Histona/genética , Regulação Neoplásica da Expressão Gênica , MicroRNAs/genética , Proteínas dos Microfilamentos/genética , Neoplasias da Próstata/genética , Neoplasias da Próstata/patologia , Idoso , Sequência de Bases , Linhagem Celular Tumoral , Proliferação de Células/genética , Proteínas Cromossômicas não Histona/metabolismo , Expressão Gênica , Perfilação da Expressão Gênica , Inativação Gênica , Humanos , Masculino , MicroRNAs/metabolismo , Proteínas dos Microfilamentos/metabolismo , Pessoa de Meia-Idade , Dados de Sequência Molecular , Invasividade Neoplásica/genética , Próstata/metabolismo , Transdução de Sinais/genética , Transfecção
11.
Immun Inflamm Dis ; 11(1): e743, 2023 01.
Artigo em Inglês | MEDLINE | ID: mdl-36705422

RESUMO

INTRODUCTION: Chronic periodontitis (CP) is an inflammatory periodontal disease with high incidence and complex pathology. This research is aimed to investigate the function of exosomal miR-205-5p (Exo-miR-205-5p) in CP and the underlying molecular mechanisms. METHOD: Exo-miR-205-5p was isolated from miR-205-5p mimics-transfected periodontal ligament stem cells (PDLSCs), and subsequently cocultured with lipopolysaccharide (LPS)-induced cells or injected into LPS-treated rats. The mRNA expression of inflammatory factors and Th17/Treg-related factors were measured by quantitative real-time PCR. The contents of inflammatory factors and the percentages of Th17/Treg cells were measured by enzyme-linked immunosorbent assay and flow cytometry, respectively. Besides, the target relation between miR-205-5p and X-box binding protein 1 (XBP1) was explored. RESULTS: MiR-205-5p was downregulated in LPS-induced PDLSCs and corresponding exosomes. Exo-miR-205-5p inhibited inflammatory cell infiltration, decreased the production of TNF-α, IL-1ß, and IL-6, and decreased the percentage of Th17 cells in LPS-treated rats. In addition, XBP1 was a target of miR-205-5p. Overexpression of XBP1 weakened the effects of Exo-miR-205-5p on inhibiting inflammation and regulating Treg/Th17 balance in LPS-induced cells. CONCLUSIONS: Exo-miR-205-5p derived from PDLSCs relieves the inflammation and balances the Th17/Treg cells in CP through targeting XBP1.


Assuntos
Periodontite Crônica , MicroRNAs , Células-Tronco , Proteína 1 de Ligação a X-Box , Animais , Ratos , Periodontite Crônica/metabolismo , Periodontite Crônica/patologia , Inflamação/metabolismo , Lipopolissacarídeos/toxicidade , MicroRNAs/genética , Ligamento Periodontal/citologia , Ligamento Periodontal/patologia , Células-Tronco/metabolismo , Proteína 1 de Ligação a X-Box/genética , Proteína 1 de Ligação a X-Box/metabolismo
12.
Biomed Pharmacother ; 167: 115516, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37717533

RESUMO

OBJECTIVE: This study aims to investigate the impact of Polyphyllin VII (PP7) on pulmonary hypertension (PH) and elucidate the underlying mechanism involving microRNA (miR)-205-5p/ß-catenin. METHODS: The PH rat model was induced through hypoxia exposure. The effects of intraperitoneal injection of PP7 on pulmonary artery tissue pathology, hemodynamics, miR-205-5p expression and ß-catenin protein levels were assessed. In vitro, pulmonary arterial smooth muscle cells (PASMCs) were subjected to hypoxic conditions. Moreover, miR-205-5p and/or ß-catenin were overexpressed through transfection. PASMCs were pre-cultured in 20 µM PP7, and subsequent measurements included proliferation, apoptosis and vascular remodeling protein expression. RESULTS: PP7 ameliorated PH symptoms in rats, upregulated miR-205-5p expression and inhibited ß-catenin protein expression. Furthermore, miR-205-5p upregulation inhibited ß-catenin expression in PASMCs. The overexpression of ß-catenin aggravated hypoxia-induced proliferation, inhibited apoptosis and further augmented VEGF and α-SMA protein expression. Additionally, miR-205-5p overexpression alleviated the hypoxia-induced PASMC proliferation and apoptosis by inhibiting ß-catenin protein expression. Under hypoxic conditions, PP7 significantly elevated miR-205-5p while downregulating ß-catenin protein expression. Furthermore, inhibiting miR-205-5p counteracted the inhibitory effect of PP7 on ß-catenin, consequently blocking the regulatory role of PP7 in PASMC proliferation and apoptosis. CONCLUSION: PP7 likely modulates ß-catenin protein levels by promoting miR-205-5p expression, thereby alleviating PH, vascular remodeling and airway smooth muscle remodeling.

13.
J Orthop Surg Res ; 18(1): 782, 2023 Oct 18.
Artigo em Inglês | MEDLINE | ID: mdl-37853466

RESUMO

OBJECTIVE: Osteogenesis is the key process of bone homeostasis differentiation. Numerous studies have manifested that circular RNA (circRNA) is a critical regulator of osteogenesis. The research was to explore circRNA-mediated mechanisms in osteogenesis. METHODS: Bone marrow mesenchymal stem cells (BMSCs) were cultured and induced to osteogenic differentiation (OD). Then, oe-circ-FKBP5, oe-NC, si-circ-FKBP5, si-NC, miR-205-5p mimic, mimic NC, miR-205-5p inhibitor, inhibitor NC, sh-RUNX2, or sh-NC were transfected into BMSCs. Alkaline phosphatase (ALP) activity was detected by ALP staining, cell mineralization was detected by alizarin red staining, cell proliferation was detected by CCK-8, and cell apoptosis was detected by flow cytometry. Then, the expression of circ-FKBP5, miR-205-5p, RUNX2 and osteogenic marker genes was detected by RT-qPCR, and the expression of RUNX2 protein was detected by Western blot. Finally, the targeting relationship between miR-205-5p and circ-FKBP5 or RUNX2 was verified by bioinformation website analysis and dual luciferase reporter gene detection. RESULTS: Circ-FK501 binding protein 51 (FKBP5) was distinctly elevated during OD of BMSCs. Elevated circ-FKBP5 boosted the proliferation and OD, as well as expression of osteogenic marker genes while reduced apoptosis of BMSCs. Down-regulation of circ-FKBP5 inhibited BMSCs proliferation, OD and osteogenic marker gene expression, and promoted apoptosis of BMSCs. Subsequently, circ-FKBP5 combined with miR-205-5p and constrained miR-205-5p expression. Silenced miR-205-5p boosted proliferation, OD, and expression of osteogenic marker genes and suppressed apoptosis of BMSCs. However, up-regulation of miR-205-5p inhibited BMSC proliferation, OD and osteogenic marker gene expression, and promoted apoptosis. Additionally, miR-205-5p targeted Runt-associated transcription factor 2 (RUNX2). Repression of RUNX2 turned around the effect of circ-FKBP5 overexpression on BMSCs. CONCLUSION: In brief, circ-FKBP5 boosted BMSC proliferation and OD by mediating the miR-205-5p/RUNX2 axis.


Assuntos
Células-Tronco Mesenquimais , MicroRNAs , Osteogênese , RNA Circular/genética , RNA Circular/metabolismo , Subunidade alfa 1 de Fator de Ligação ao Core/genética , Subunidade alfa 1 de Fator de Ligação ao Core/metabolismo , MicroRNAs/metabolismo , Diferenciação Celular/genética , Células-Tronco Mesenquimais/metabolismo , Proteínas de Ligação a RNA/genética , Proteínas de Ligação a RNA/metabolismo , Proliferação de Células/genética , Células Cultivadas
14.
Cancer Biother Radiopharm ; 37(9): 779-791, 2022 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-33784470

RESUMO

Background: Both microRNA (miR)-205 and GATA Binding Protein 3 (GATA3) were involved in cervical cancer (CC), yet their correlation remained poorly understood. The authors' study aimed to unveil their correlation in CC. Materials and Methods: Clinical cervical tissue samples were collected. Survival rates of CC patients with high or low miR-205 and GATA3 expressions were analyzed using Kaplan-Meier curve. CC cell viability, migration, and tube formation were measured by cell counting kit-8 assay, scratch assay, and tube formation assay, respectively. The potential binding sites between miR-205 and GATA3 were predicted by TargetScan, and confirmed with dual-luciferase reporter assay. Relative expressions of miR-205, GATA3, vascular endothelial growth factor, E-cadherin, N-cadherin, and vimentin were quantified with quantitative real-time polymerase chain reaction (qRT-PCR) and Western blot as needed. Results: MiR-205 was increased, yet GATA3 was decreased in CC, indicating that they were negatively correlated. Upregulating miR-205 increased miR-205 expression and CC cell viability and promoted migration and tube formation, yet decreased GATA3 expression, while downregulating miR-205 exerted the opposite effects. GATA3 was the target gene of miR-205, and reversed the effect of miR-205 on GATA3 expression and cell viability, migration, and tube formation in CC cells by reversing the effects of miR-205 on migration- and tube formation-related protein expressions. Conclusion: MiR-205 promotes CC cell viability, migration, and tube formation in vitro by targeting GATA3, providing new evidence for the implication of miR-205 in CC and a possible therapeutic method for CC. Clinical Trial Registration number: ZLK-20181103-01.


Assuntos
MicroRNAs , Neoplasias do Colo do Útero , Feminino , Humanos , Neoplasias do Colo do Útero/genética , Neoplasias do Colo do Útero/metabolismo , MicroRNAs/genética , MicroRNAs/metabolismo , Regulação Neoplásica da Expressão Gênica , Movimento Celular/genética , Linhagem Celular Tumoral , Fator A de Crescimento do Endotélio Vascular/genética , Fator A de Crescimento do Endotélio Vascular/metabolismo , Fator de Transcrição GATA3/genética , Fator de Transcrição GATA3/metabolismo
15.
Mol Med Rep ; 26(5)2022 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-36052869

RESUMO

Following the publication of this paper, it was drawn to the Editors' attention by a concerned reader that certain of the data shown for the cell migration and invasion assays in Fig. 2C were strikingly similar to data appearing in different form in other articles by different authors. Owing to the fact that the contentious data in the above article had already been published elsewhere, or were already under consideration for publication, prior to its submission to Molecular Medicine Reports, the Editor has decided that this paper should be retracted from the Journal. The authors were asked for an explanation to account for these concerns, but the Editorial Office did not receive a reply. The Editor apologizes to the readership for any inconvenience caused. [Molecular Medicine Reports 16: 1431­1438, 2017; DOI: 10.3892/mmr.2017.6748].

16.
Int Immunopharmacol ; 107: 108553, 2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35358777

RESUMO

Recently, baicalin refers to flavonoid compound extracted from Scutellaria baicalensis Georgi has been indicated to hold promising therapeutic effects in alcohol-associated liver disease (ALD). However, knowledge of the molecular mechanisms for its hepatoprotective effect is still very limited. Evidence exists suggesting potential association between miR-205 and baicalin's function. Bioinformatic analysis and dual luciferase reporter assay were conducted to determine the binding affinity between miR-205 and importinα5. Our findings revealed that baicalin could alleviate ALD by raising the expression of miR-205. Additionally, miR-205 repressed NF-κB signaling pathway activation by binding to importinα5 to relieve ALD. Baicalin inhibited importinα5-mediated NF-κB signaling pathway to protect the liver against alcohol-induced injury, inflammation, oxidative stress and hepatocyte apoptosis. Taken conjointly, baicalin confers hepatoprotective effect against ALD through miR-205-mediated importinα5 inhibition via the NF-κB signaling pathway, highlighting a promising therapeutic target for ALD treatment with the help of traditional Chinese medicine.


Assuntos
Hepatopatias Alcoólicas , MicroRNAs , Flavonoides/farmacologia , Flavonoides/uso terapêutico , Humanos , Hepatopatias Alcoólicas/tratamento farmacológico , MicroRNAs/genética , MicroRNAs/metabolismo , NF-kappa B/metabolismo
17.
Oncol Rep ; 47(6)2022 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-35514319

RESUMO

Icariin (ICA) is one of the main bioactive monomer belonging to the flavonoid glycosides that has been widely studied in multiple diseases, including lung cancer. Although ICA has shown anticancer effects, its specific molecular mechanism of action remains to be elucidated. In the present study, the expression of microRNA (miR)­205­5p and Phosphatase and tensin homolog deleted on chromosome ten (PTEN) in human lung cancer and bronchial cells were analyzed. Cell viability, colony formation, migration, invasion, apoptosis and cell cycle distribution were investigated in vitro. In addition, the function of ICA on tumor growth was determined using a xenotransplantation model. The results showed that ICA decreased the viability of lung cancer cells. In addition, miR­205­5p was upregulated in lung cancer tissues but downregulated following ICA treatment, while PTEN showed a significantly lower expression in lung cancer cells. miR­205­5p could increase cancer cell proliferation, migration, invasion and cell cycle progression while suppressing cell apoptosis. Importantly, rescue experiment results showed that ICA could target the miR­205­5p/PTEN axis to affect the PI3K/Akt signaling, thereby suppressing the malignant cell phenotype of lung cancer. Finally, animal experiments confirmed that ICA could inhibit lung cancer growth in vivo. Taken together, our findings suggest that miR­205­5p is a key gene targeted by ICA to inhibit lung cancer progression.


Assuntos
Neoplasias Pulmonares , MicroRNAs , Animais , Apoptose/genética , Movimento Celular/genética , Proliferação de Células/genética , Flavonoides , Humanos , Neoplasias Pulmonares/tratamento farmacológico , Neoplasias Pulmonares/genética , Neoplasias Pulmonares/metabolismo , MicroRNAs/genética , MicroRNAs/metabolismo , PTEN Fosfo-Hidrolase/genética , PTEN Fosfo-Hidrolase/metabolismo , Fosfatidilinositol 3-Quinases/genética , Fosfatidilinositol 3-Quinases/metabolismo , Proteínas Proto-Oncogênicas c-akt/genética , Proteínas Proto-Oncogênicas c-akt/metabolismo
18.
Genes Nutr ; 17(1): 11, 2022 Jul 20.
Artigo em Inglês | MEDLINE | ID: mdl-35858845

RESUMO

OBJECTIVE: MicroRNAs (miRNAs) targeting has been revealed to be an appealing strategy for the treatment and management of atrial fibrillation (AF). In this research, we aimed to explore the mechanisms of miR-205-5p in reducing the high-fat diet (HFD)-induced atrial fibrosis through the EHMT2/IGFBP3 axis. METHODS: Expression levels of miR-205-5p, IGFBP3 and EHMT2 were determined in AF patients, cell fibrosis models and mouse atrial fibrosis models. Luciferase activity and RIP assays were performed to detect the binding between miR-205-5p and EHMT2, and ChIP assays were implemented to detect the enrichment of H3K9me2 and H3K4me3 in the promoter region of IGFBP3 in cells. The related experiments focusing on the inflammatory response, atrial fibrosis, mitochondrial damage, and metabolic abnormalities were performed to figure out the roles of miR-205-5p, IGFBP3, and EHMT2 in cell and mouse atrial fibrosis models. RESULTS: Low expression levels of miR-205-5p and IGFBP3 and a high expression of EHMT2 were found in AF patients, cell fibrosis models and mouse atrial fibrosis models. Upregulation of miR-205-5p reduced the expression of TGF-ß1, α-SMA, Col III and other fibrosis-related proteins. miR-205-5p overexpression targeted EHMT2 to regulate the methylation of H3 histones to promote IGFBP3 expression, which in turn affected the fibrosis of atrial muscle cells. In HFD-induced atrial fibrosis mice, upregulated miR-205-5p or elevated IGFBP3 alleviated atrial fibrosis, mitochondrial damage, and metabolic abnormalities. CONCLUSION: This study suggests that miR-205-5p attenuates HFD-induced atrial fibrosis via modulating the EHMT2/IGFBP3 axis. miR-205-5p alleviates high-fat diet-induced atrial fibrosis in mice via EHMT2/IGFBP3.

19.
Mol Med Rep ; 25(5)2022 May.
Artigo em Inglês | MEDLINE | ID: mdl-35322864

RESUMO

Intervertebral disc degeneration (IDD) is a leading cause of degenerative spinal disease. Long non­coding RNA (lncRNA) LINC00284 is overexpressed in multiple types of cancer and promotes cancer cell proliferation and inhibits apoptosis; however, its role in human IDD and nucleus pulposus (NP) remain unclear. In the present study, intervertebral disc (IVD) tissues were collected from IDD patients for detection of LINC00284 expression using reverse transcription­quantitative PCR, the binding effect between miR­205­3p and LINC00284 was validated by dual­luciferase reporter assay. miR­205­3p and small interfering RNA (siRNA) was used for LINC00240 knockdown to investigate the proliferation, apoptosis of cells in the NP cells measured by Cell Counting Kit (CCK)­8 assay and Annexin V­FITC/Propidium Iodide (PI) staining with flow cytometry receptivity. IDD animal models were constructed for in vivo study of the role LINC00284 in IDD improvement. The results showed that LINC00284 expression was upregulated in IDD tissue and IL­1ß­induced NP cells. LINC00284 knockdown resulted in an increase in IL­1ß­induced NP cell proliferation, a decrease in apoptosis and matrix metalloproteinase­3 expression and an increase in expression of extracellular matrix (ECM) markers aggrecan and collagen II. In vivo experiments and histomorphometric analysis confirmed the protective effect of LINC00284 knockdown in IDD. LINC00284 was also shown to be a target of microRNA (miR)­205­3p, and there was a negative correlation between LINC00284 and miR­205­3p levels in IDD tissue. Additionally, LINC00284 knockdown or miR­205­3p upregulation resulted in inhibition of Wnt/ß­catenin signaling and subsequent degradation of the ECM. The present study demonstrated that LINC00284 activated the Wnt/ß­catenin signaling via sponging miR­205­3p, resulting in inhibition of NP cell proliferation and ECM synthesis. These results suggested that targeting LINC00284 to rescue miR­205­3p expression may be a potential method for IDD management.


Assuntos
Degeneração do Disco Intervertebral , MicroRNAs , Núcleo Pulposo , RNA Longo não Codificante , Via de Sinalização Wnt , Animais , Apoptose/genética , Proliferação de Células/genética , Células Cultivadas , Matriz Extracelular/metabolismo , Humanos , Degeneração do Disco Intervertebral/genética , Degeneração do Disco Intervertebral/metabolismo , MicroRNAs/genética , MicroRNAs/metabolismo , Núcleo Pulposo/citologia , RNA Longo não Codificante/genética , RNA Longo não Codificante/metabolismo , beta Catenina/metabolismo
20.
Zhonghua Shao Shang Za Zhi ; 37(2): 180-186, 2021 Feb 20.
Artigo em Chinês | MEDLINE | ID: mdl-33648329

RESUMO

Objective: To investigate the expression and effect of microRNA-205 (miR-205) in human hypertrophic scar. Methods: The experimental research method was applied. From October 2019 to January 2020, hypertrophic scar tissue from 6 patients with hypertrophic scar (1 male and 5 females, aged (36±7) years) and remaining normal skin tissue from 6 trauma patients (2 males and 4 females, aged (38±9) years) after flap transplantation operation were collected. The above-mentioned 12 patients were admitted to the General Hospital of Northern Theater Command and met the inclusion criteria. Real-time fluorescent quantitative reverse transcription polymerase chain reaction was used to detect the mRNA expressions of miR-205 and thrombospondin-1 (TSP-1). The hypertrophic scar tissue was taken to culture the 3rd to 5th passage of fibroblasts (Fbs) for the follow-up experiments. Two batches of hypertrophic scar Fbs were divided into TSP-1+ miR-205 control group, TSP-1+ miR-205 mimic group, and TSP-1 mutant+ miR-205 control group, TSP-1 mutant+ miR-205 mimic group, which were transfected with the corresponding sequences. At 48 h after transfection, the expressions of luciferase and renal luciferase were detected by luciferase reporter gene detection kit, and the luciferase/renal luciferase ratio was calculated to indicate the activity of TSP-1. Two batches of hypertrophic scar Fbs were collected and divided into miR-205 control group, miR-205 mimic group, and miR-205 inhibitor group and miR-205 control group, miR-205 mimic group, and miR-205 mimic+ TSP-1 group, respectively, which were transfected with the corresponding sequences. At 0 (immediately), 12, 24, 36, and 48 h after transfection, the cell viability was detected by microplate reader. Two batches of hypertrophic scar Fbs were grouped and treated as described in the cell viability detecting experiment. At 24 h after transfection, Hoechst 33258 staining was performed to observe the nuclear shrinkage, so as to reflect the apoptosis of Fbs. The number of samples in cell experiment was three. Data were statistically analyzed with analysis of variance for factorial design, one-way analysis of variance, t test, and chi-square test. Results: The mRNA expression of miR-205 in hypertrophic scar tissue was 0.54±0.05, which was significantly lower than 1.26±0.07 in normal skin tissue (t=8.213, P<0.01). The expression of TSP-1 mRNA in hypertrophic scar tissue was 1.46±0.07, which was significantly higher than 0.68±0.11 in normal skin tissue (t=6.031, P<0.01). At 48 h after transfection, the luciferase/renal luciferase ratio reflecting the TSP-1 activity of cells in TSP-1+ miR-205 mimic group was 0.532±0.028, which was significantly lower than 0.998±0.012 in TSP-1+ miR-205 control group (t=26.500, P<0.01), and the luciferase/renal luciferase ratio of cells in TSP-1 mutant+ miR-205 mimic group was 0.963±0.012, which was close to 0.976±0.010 in TSP-1 mutant+ miR-205 control group (t=0.816, P>0.05). At 12, 24, 36, and 48 h after transfection, the cell viability in miR-205 mimic group was significantly lower than that in miR-205 control group (t=6.169, 12.670, 27.130, 12.670, P<0.05 or P<0.01). At 0, 12, 24, 36, and 48 h after transfection, the cell viability in miR-205 inhibitor group was significantly higher than that in miR-205 control group (t=6.169, 7.221, 7.787, 7.835, 13.030, P<0.05 or P<0.01). At 12, 24, 36, and 48 h after transfection, the cell viability in miR-205 mimic group was significantly lower than that in miR-205 control group and miR-205 mimic+ TSP-1 group (t=8.118, 26.970, 39.550, 42.490, 14.570, 12.240, 36.830, 45.220, P<0.05 or P<0.01). At 24 h after transfection, compared with miR-205 control group, the cell apoptosis in miR-205 mimic group was increased, and the cell apoptosis in miR-205 inhibitor group was decreased. At 24 h after transfection, compared with miR-205 mimic group, the cell apoptosis in miR-205 control group and miR-205 mimic+ TSP-1 group were decreased. Conclusions: miR-205 can inhibit the proliferation and promote the apoptosis of Fbs in human hypertrophic scar by inhibiting the expression of TSP-1, which has the potential to be a therapeutic target for hypertrophic scar.


Assuntos
Cicatriz Hipertrófica , MicroRNAs , Adulto , Apoptose , Proliferação de Células , Cicatriz Hipertrófica/genética , Fibroblastos , Humanos , Masculino , MicroRNAs/genética , Pessoa de Meia-Idade , RNA Mensageiro
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