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1.
Life Sci ; 351: 122794, 2024 Aug 15.
Artigo em Inglês | MEDLINE | ID: mdl-38866218

RESUMO

BACKGROUND: Ulcerative colitis (UC) is a chronic, recurrent, non-specific inflammatory disease, and the pathogenesis of the disease remains unclear. Ferroptosis is a form of programmed cell death characterized by the accumulation of iron-dependent lipid peroxides, which are simultaneously closely related to reactive oxygen species (ROS). Although seliciclib is highly effective against immune inflammation, its mechanism on colitis is unclear. This study demonstrated that seliciclib administration partially inhibited ferroptosis, alleviating symptoms and inflammation in experimental colitis. METHODS: The mouse UC model was induced by 3.0 % dextran sodium sulfate (DSS) for 7 days and treated with seliciclib (10 mg/kg) for 5 days. In the in vitro model, LPS (100 µg/mL) was used for induction and seliciclib (10 µM) was applied for 2 h. Meanwhile, appropriate histopathology, inflammatory response, oxidative stress, and ferroptosis regulators were measured. RESULTS: This study primarily investigated the role of seliciclib in regulating ferroptosis in UC. Bioinformatics analysis indicated that Dual oxidase 2 (DUOX2) may serve a role involved in the ferroptosis of UC. The experimental findings demonstrated that seliciclib alleviates symptoms and inflammation in DSS-induced UC mice and partially mitigates the occurrence of ferroptosis both in vivo and in vitro, possibly through the modulation of DUOX2. CONCLUSIONS: Ferroptosis is strongly associated with the development of colitis, and seliciclib plays an essential role in ferroptosis and inflammation in UC. The suppression of ferroptosis in the intestinal epithelium could be a therapeutic approach for UC.


Assuntos
Colite Ulcerativa , Sulfato de Dextrana , Ferroptose , Camundongos Endogâmicos C57BL , Animais , Ferroptose/efeitos dos fármacos , Colite Ulcerativa/tratamento farmacológico , Colite Ulcerativa/induzido quimicamente , Colite Ulcerativa/patologia , Colite Ulcerativa/metabolismo , Camundongos , Masculino , Sulfato de Dextrana/toxicidade , Inflamação/tratamento farmacológico , Inflamação/patologia , Inflamação/metabolismo , Espécies Reativas de Oxigênio/metabolismo , Modelos Animais de Doenças , Estresse Oxidativo/efeitos dos fármacos
2.
Transl Oncol ; 44: 101916, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38513457

RESUMO

PURPOSE: Metastasis of hepatocellular carcinoma (HCC) critically impacts the survival prognosis of patients, with the pivotal role of hepatocellular carcinoma stem cells in initiating invasive metastatic behaviors. The Flap Endonuclease 1 (FEN1) is delineated as a metallonuclease, quintessential for myriad cellular processes including DNA replication, DNA synthesis, DNA damage rectification, Okazaki fragment maturation, baseexcision repair, and the preservation of genomic stability. Furthermore, it has been recognized as an oncogene in a diverse range of malignancies. Our antecedent research has highlighted a pronounced overexpression of protein FEN1 in hepatocellular carcinoma, where it amplifies the invasiveness and metastatic potential of liver cancer cells. However, its precise role in liver cancer stem cells (LCSCs) remains an enigma and requires further investigation. METHODS: To rigorously evaluate the stemness attributes of LCSCs, we employed sphere formation assays and flow cytometric evaluations. Both CD133+ and CD133- cell populations were discerningly isolated utilizing immunomagnetic bead separation techniques. The expression levels of pertinent genes were assayed via real-time quantitative PCR (RT-qPCR) and western blot analyses, while the expression profiles in hepatocellular carcinoma tissues were gauged using immunohistochemistry. Subsequent immunoprecipitation, in conjunction with mass spectrometry, ascertained the concurrent binding of proteins FEN1 and Small ubiquitin-related modifier 2 (SUMO2) in HCC cells. Lastly, the impact of SUMO2 on proteasomal degradation pathway of FEN1 was validated by supplementing MG132. RESULTS: Our empirical findings substantiate that protein FEN1 is profusely expressed in spheroids and CD133+ cells. In vitro investigations demonstrate that the upregulation of protein FEN1 unequivocally augments the stemness of LCSCs. In a congruent in vivo context, elevation of FEN1 noticeably enhances the tumorigenic potential of LCSCs. Conversely, inhibiting protein FEN1 resulted in a marked reduction in LCSC stemness. From a mechanistic perspective, there exists a salient positive correlation between the protein expression of FEN1 and SUMO2 in liver cancer tissues. Furthermore, the level of SUMO2-mediated modification of FEN1 is pronouncedly elevated in LCSCs. Interestingly, SUMO2 has the ability to bind to FEN1, leading to a inhibition in the proteasomal degradation pathway of FEN1 and an enhancement in its protein expression. However, it is noteworthy that this interaction does not affect the mRNA level of FEN1. CONCLUSION: In summation, our research elucidates that protein FEN1 is an effector in augmenting the stemness of LCSCs. Consequently, strategic attenuation of protein FEN1 might proffer a pioneering approach for the efficacious elimination of LCSCs.

4.
Inflammation ; 2023 Nov 21.
Artigo em Inglês | MEDLINE | ID: mdl-37985573

RESUMO

Ulcerative colitis, an inflammatory bowel disease, manifests with symptoms such as abdominal pain, diarrhea, and mucopurulent feces. The long non-coding RNA (lncRNA) ANRIL exhibits significantly reduced expression in UC, yet its specific mechanism is unknown. This study revealed that ANRIL is involved in the progression of UC by inhibiting IL-6 and TNF-α via miR-191-5P/SATB1 axis. We found that in patients with UC, interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α) were significantly overexpressed in inflamed colon sites, whereas ANRIL was significantly under-expressed and associated with disease severity. The downregulation of ANRIL resulted in the increased expression of IL-6 and TNF-α in LPS-treated FHCs. ANRIL directly targeted miR-191-5p, thereby inhibiting its expression and augmenting SATB1 expression. Moreover, overexpression of miR-191-5p abolished ANRIL-mediated inhibition of IL-6 and TNF-α production. Dual luciferase reporter assays revealed the specific binding of miR-191-5p to ANRIL and SATB1. Furthermore, the downregulation of ANRIL promoted DSS-induced colitis in mice. Together, we provide evidence that ANRIL plays a critical role in regulating IL-6 and TNF-α expression in UC by modulating the miR-191-5p/SATB1 axis. Our study provides novel insights into progression and molecular therapeutic strategies in UC.

5.
Mediators Inflamm ; 2023: 1073984, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37554552

RESUMO

Immune regulation plays a crucial role in human health and disease. Inflammatory bowel disease (IBD) is a chronic relapse bowel disease with an increasing incidence worldwide. Clinical treatments for IBD are limited and inefficient. However, the pathogenesis of immune-mediated IBD remains unclear. This review describes the activation of innate and adaptive immune functions by intestinal immune cells to regulate intestinal immune balance and maintain intestinal mucosal integrity. Changes in susceptible genes, autophagy, energy metabolism, and other factors interact in a complex manner with the immune system, eventually leading to intestinal immune imbalance and the onset of IBD. These events indicate that intestinal immune imbalance is an alarm for IBD development, further opening new possibilities for the unprecedented development of immunotherapy for IBD.


Assuntos
Imunidade Inata , Doenças Inflamatórias Intestinais , Humanos , Imunidade Adaptativa , Intestinos/patologia , Doenças Inflamatórias Intestinais/metabolismo , Mucosa Intestinal/metabolismo
6.
Mol Biol Rep ; 50(7): 5557-5564, 2023 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-37155012

RESUMO

BACKGROUND: Inflammatory bowel disease (IBD) is a global health problem and there are few cell models for IBD at present. To culture a human fetal colon (FHC) cell line in vitro and establish an FHC cell inflammation model that meets the requirements for high expression of interleukin-6 (IL-6) and tumor necrosis factor-α (TNF-α). METHODS AND RESULTS: FHC cells were cultured with various concentrations of Escherichia coli lipopolysaccharide (LPS) in appropriate media for 0.5, 1, 2, 4, 8, 16 and 24 h to stimulate an inflammatory reaction. The viability of FHC cells was detected by a Cell Counting Kit-8 (CCK-8) assay. The transcriptional levels and protein expression changes of IL-6 and TNF-α in FHC cells were detected by Quantitative Real­Time Polymerase Chain Reaction (qRT-PCR) and Enzyme­Linked Immunosorbent Assay (ELISA), respectively. Appropriate stimulation conditions were selected (i.e., LPS concentration and treatment time), based on changes in cell survival rate, and IL-6 and TNF-α expression levels. An LPS concentration higher than 100 µg/mL or a treatment time longer than 24 h resulted in morphological changes and decreased cell survival. By contrast, expression levels of IL-6 and TNF-α significantly increased within 24 h when LPS concentration lower than 100 µg/mL and peaked at 2 h, whilst maintaining cell morphology and viability in FHC cells. CONCLUSION: The treatment of FHC cells with 100 µg/mL LPS within 24 h was optimal in terms of stimulating IL-6 and TNF-α expression.


Assuntos
Doenças Inflamatórias Intestinais , Lipopolissacarídeos , Humanos , Lipopolissacarídeos/farmacologia , Fator de Necrose Tumoral alfa/genética , Fator de Necrose Tumoral alfa/metabolismo , Interleucina-6/genética , Interleucina-1beta/metabolismo , Inflamação/induzido quimicamente , Inflamação/metabolismo , Doenças Inflamatórias Intestinais/induzido quimicamente
7.
Acta Histochem ; 125(2): 152002, 2023 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-36724637

RESUMO

OBJECTIVES: Peroxisomal trans-2-enoyl-CoA reductase (PECR) encodes proteins related to fatty acid metabolism and synthesis. It has been confirmed that PECR has decreased expression in colon cancer and breast cancer, while the role of PECR in liver cancer is unknown. We aimed to study the role and mechanism of PECR in the genesis and development of liver cancer. METHODS: In this study, the expression of PECR was queried in the Cancer Genome Atlas Database and Western Blotting and RT-PCR experiments were carried out in paired liver cancer tissues to detect the expression of PECR. Functional tests were evaluated by cell count kit-8 (CCK-8), Flow cytometry, wound healing assay, Transwell, migration. In vivo study, we constructed a nude mouse tumorigenic model to observe the effect of PECR on the proliferation of liver cancer. And the tumor body of the mouse was taken out for histochemistry (IHC). Multiple Cox regression was used to analyze the correlation between PECR and Clinicopathology. RESULTS: We confirmed that the overexpression of PECR inhibited the proliferation, migration and invasion of hepatocellular carcinoma and promoted the apoptosis of hepatocellular carcinoma. The low expression group of PECR promoted the proliferation and metastasis of liver cancer. In vivo, overexpression of PECR inhibits the proliferation of mouse tumors. In addition, the mechanism study shows that PECR may indirectly affect the proliferation of hepatocellular carcinoma cells through ERK pathway. CONCLUSION: In general, PECR may be a new diagnostic marker and a potential therapeutic target for hepatocellular carcinoma.


Assuntos
Carcinoma Hepatocelular , Neoplasias Hepáticas , MicroRNAs , Oxirredutases atuantes sobre Doadores de Grupo CH-CH , Animais , Camundongos , Carcinoma Hepatocelular/patologia , Linhagem Celular , Linhagem Celular Tumoral , Movimento Celular , Proliferação de Células , Regulação Neoplásica da Expressão Gênica , Neoplasias Hepáticas/patologia , MicroRNAs/genética , Invasividade Neoplásica/genética , Oxirredutases atuantes sobre Doadores de Grupo CH-CH/metabolismo
8.
Mater Today Bio ; 16: 100398, 2022 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-36081579

RESUMO

The accuracy and enrichment rate of targeted drugs largely determine the clinical diagnosis and treatment effect. Therefore, the accuracy and enrichment rate of targeted drugs should be improved. We designed a visual diagnosis and treatment system based on hierarchical targeting. It consists of multifunctional magnetic nanoparticles and a bio magnetic material. Bio-magnet mediated primary targeting can effectively improve the drug enrichment rate in the target tissue. SNF peptide/epithelial cell adhesion molecule antibody mediated targeting liver cancer stem cells (LCSCs) (secondary target) can improve the accuracy of the treatment and its outcomes. Low intensity focused ultrasound irradiation can explode nanoparticles around LCSCs, which can cause physical damage to cells. The combination of released interferon gamma and its receptor (tertiary target) can be used to initiate chemotherapy and immunotherapy. Using the optical properties of Fe3O4 and the phase transformation ability of perfluoropentane, the system can enhance photoacoustic and ultrasonic molecular imaging enabling diagnosis and treatment visualization. Targeting LCSCs can accurately provide physical, chemical, and immune treatment of Hepatocellular carcinoma, making the therapeutic effect more effective and thorough. This system may provide a new method for a more accurate visual diagnosis and treatment of tumors.

9.
Biochem Biophys Res Commun ; 597: 8-15, 2022 Mar 15.
Artigo em Inglês | MEDLINE | ID: mdl-35121179

RESUMO

Long non-coding RNA (LncRNA) H19 plays an important role on the biological functions of endogenous neural stem/progenitor cells (NSPCs). Our study aimed to explore the functions of H19 in NSPCs induced by oxygen-glucose deprivation/reperfusion (OGD/R) in vitro and the underlying mechanisms. In this study, our results showed that knockdown of H19 significantly inhibited NSPCs proliferation. Additionally, the apoptosis of NSPCs after ODG/R injury was notably promoted by H19 knockdown. Cell cycle arrest was induced in NSPCs at G0/G1 phase after OGD/R, while knockdown of H19 decreased the percentage of cells at G2/S phase. The results of immunofluorescence analysis revealed that H19 knockdown reduced the staining intensity of Ki-67 and DCX. Furthermore, H19 knockdown enhanced the expression of p53, Bax and Cleaved Caspase-3, while Bcl-2 expression was decreased. Silencing of H19 suppressed the NSPCs proliferation, cell cycle progression and differentiation, whereas cell apoptosis was promoted. Upregulation of H19 abolished OGD/R-induced NSPCs apoptosis, while cell proliferation and differentiation were promoted. Furthermore, the effects of overexpressed H19 on NSPCs proliferation, differentiation and apoptosis were abrogated by the upregulation of p53. In summary, overexpressed H19 resulted in the inactivation of p53, which promoted NSPCs proliferation, differentiation, and inhibited cell apoptosis. These findings suggested that H19 could promote cell proliferation and differentiation after OGD/R through suppressing the p53 signaling.

10.
Mol Med Rep ; 24(3)2021 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-34278494

RESUMO

Hepatocellular carcinoma (HCC) is one of the most common types of cancer, which is associated with a poor prognosis. It is necessary to identify novel prognostic biomarkers and therapeutic targets to improve the survival of patients with HCC. In the present study, a seven­gene signature associated with HCC progression was identified using weighted gene co­expression network analysis and least absolute shrinkage and selection operator, and its prognostic prediction value was confirmed in The Cancer Genome Atlas­liver HCC and International Cancer Genome Consortium liver cancer­RIKEN, Japan cohorts. Subsequently, a rarely reported gene, epoxide hydrolase 2 (EPHX2), was selected for further validation. Downregulation of EPHX2 in HCC was revealed using multiple expression datasets. Furthermore, reduced expression of EPHX2 was confirmed in HCC tissue samples and cell lines using reverse transcription­quantitative polymerase chain reaction and western blotting. Additionally, Kaplan­Meier survival curves indicated that patients with higher EPHX2 expression exhibited better prognosis, and clinicopathological analysis also revealed elevated EPHX2 levels in patients with early­stage HCC. Notably, EPHX2 was identified as an independent prognostic biomarker for overall survival of patients with HCC. Gene Ontology analysis, Kyoto Encyclopedia of Genes and Genomes analysis and gene set enrichment analysis were performed to elucidate the functions of EPHX2. The results suggested that EPHX2 expression was closely associated with metabolic reprogramming. Finally, the prognostic value of EPHX2 was evaluated using HCC tissue microarrays. In conclusion, downregulation of EPHX2 was significantly associated with the development of HCC; therefore, EPHX2 may be considered a putative therapeutic candidate for the targeted treatment of HCC.


Assuntos
Biomarcadores Tumorais/genética , Biomarcadores Tumorais/metabolismo , Carcinoma Hepatocelular/genética , Carcinoma Hepatocelular/metabolismo , Epóxido Hidrolases/genética , Epóxido Hidrolases/metabolismo , Neoplasias Hepáticas/metabolismo , Adulto , Idoso , Carcinoma Hepatocelular/patologia , Linhagem Celular Tumoral , Feminino , Perfilação da Expressão Gênica , Regulação Neoplásica da Expressão Gênica , Ontologia Genética , Humanos , Japão , Estimativa de Kaplan-Meier , Neoplasias Hepáticas/genética , Neoplasias Hepáticas/patologia , Masculino , Pessoa de Meia-Idade , Prognóstico , Transcriptoma
11.
Genes Dis ; 8(3): 250-258, 2021 May.
Artigo em Inglês | MEDLINE | ID: mdl-33997172

RESUMO

Aquaporins (AQPs) are highly conserved small transmembrane proteins, which are responsible for the water transport across the cell membrane. AQPs are abundantly expressed in numerous types of cells such as epithelial and endothelial cells. The expression of AQP-1, -3, -4, -5, -8 and -9 were found in the digestive system, where these six AQP isoforms serve essential roles including mediating the transmembrane water transport and regulating the secretion of gastrointestinal (GI) fluids, consequently facilitating the digestion and absorption of GI contents. In addition, the expression levels of AQPs are controlled by various factors, and AQPs can stimulate numerous signaling pathways; however, aberrant expression of AQPs in the GI tracts are associated with the initiation and development of numerous diseases. Thus, this review provides an overview of the expression and functions of AQPs in the digestive system.

12.
J Neurovirol ; 27(1): 35-51, 2021 02.
Artigo em Inglês | MEDLINE | ID: mdl-33534131

RESUMO

Since the outbreak of coronavirus disease 2019 (COVID-19) in 2019, it is gaining worldwide attention at the moment. Apart from respiratory manifestations, neurological dysfunction in COVID-19 patients, especially the occurrence of cerebrovascular diseases (CVD), has been intensively investigated. In this review, the effects of COVID-19 infection on CVD were summarized as follows: (I) angiotensin-converting enzyme 2 (ACE2) may be involved in the attack on vascular endothelial cells by severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2), leading to endothelial damage and increased subintimal inflammation, which are followed by hemorrhage or thrombosis; (II) SARS-CoV-2 could alter the expression/activity of ACE2, consequently resulting in the disruption of renin-angiotensin system which is associated with the occurrence and progression of atherosclerosis; (III) upregulation of neutrophil extracellular traps has been detected in COVID-19 patients, which is closely associated with immunothrombosis; (IV) the inflammatory cascade induced by SARS-CoV-2 often leads to hypercoagulability and promotes the formation and progress of atherosclerosis; (V) antiphospholipid antibodies are also detected in plasma of some severe cases, which aggravate the thrombosis through the formation of immune complexes; (VI) hyperglycemia in COVID-19 patients may trigger CVD by increasing oxidative stress and blood viscosity; (VII) the COVID-19 outbreak is a global emergency and causes psychological stress, which could be a potential risk factor of CVD as coagulation, and fibrinolysis may be affected. In this review, we aimed to further our understanding of CVD-associated COVID-19 infection, which could improve the therapeutic outcomes of patients. Personalized treatments should be offered to COVID-19 patients at greater risk for stroke in future clinical practice.


Assuntos
Aterosclerose/complicações , COVID-19/complicações , Coagulação Intravascular Disseminada/complicações , Hemorragia/complicações , Hiperglicemia/complicações , Acidente Vascular Cerebral/complicações , Trombose/complicações , Anticoagulantes/uso terapêutico , Antivirais/uso terapêutico , Aterosclerose/diagnóstico , Aterosclerose/tratamento farmacológico , Aterosclerose/virologia , COVID-19/diagnóstico , COVID-19/virologia , Fármacos Cardiovasculares/uso terapêutico , Coagulação Intravascular Disseminada/diagnóstico , Coagulação Intravascular Disseminada/tratamento farmacológico , Coagulação Intravascular Disseminada/virologia , Armadilhas Extracelulares/efeitos dos fármacos , Armadilhas Extracelulares/imunologia , Hemorragia/diagnóstico , Hemorragia/tratamento farmacológico , Hemorragia/virologia , Humanos , Hiperglicemia/diagnóstico , Hiperglicemia/tratamento farmacológico , Hiperglicemia/virologia , Inflamação , Sistema Renina-Angiotensina/efeitos dos fármacos , Sistema Renina-Angiotensina/imunologia , SARS-CoV-2/efeitos dos fármacos , SARS-CoV-2/patogenicidade , Acidente Vascular Cerebral/diagnóstico , Acidente Vascular Cerebral/tratamento farmacológico , Acidente Vascular Cerebral/virologia , Trombose/diagnóstico , Trombose/tratamento farmacológico , Trombose/virologia , Tratamento Farmacológico da COVID-19
15.
J Gastroenterol Hepatol ; 35(11): 1990-1997, 2020 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-32115773

RESUMO

BACKGROUND AND AIM: Intratumor hypoxia is a hallmark of hepatocellular carcinoma (HCC) and is associated with an aggressive tumor phenotype. Although it has been shown that AQP9 plays an important role in HCC, the relevance between hypoxia and AQP9 is still unknown. METHODS: We established in vitro normoxic or hypoxic models to investigate the role of AQP9 in the regulation of hypoxia-inducible factor 1α (HIF-1α) and hypoxia-enhanced invasion of hepatoma cells. Molecular expression was detected using western blot or quantitative polymerase chain reaction. Cell invasion ability was determined using Transwell invasion assay. In vivo xenograft experiment was used to detect the role of AQP9 on tumor growth. RESULTS: Our present study revealed a decrease in the expression levels of AQP9 in hypoxic microenvironments. Overexpression of AQP9 led to a decreased expression of HIF-1α; conversely, suppression of AQP9 in HCC cells had an opposite effect. Furthermore, up-regulated AQP9 blocked the hypoxic-enhanced invasion of HCC cells. The overexpression of AQP9 inhibited the growth of tumors and HIF-1α expression in vivo. CONCLUSIONS: These data suggest that AQP9 acts as a tumor suppressor in HCC invasion via the regulation of HIF-1α expression in the tumor hypoxic microenvironment.


Assuntos
Aquaporinas/metabolismo , Aquaporinas/fisiologia , Carcinoma Hepatocelular/genética , Carcinoma Hepatocelular/patologia , Expressão Gênica/fisiologia , Genes Supressores de Tumor , Subunidade alfa do Fator 1 Induzível por Hipóxia/genética , Subunidade alfa do Fator 1 Induzível por Hipóxia/metabolismo , Hipóxia , Neoplasias Hepáticas/genética , Neoplasias Hepáticas/patologia , Microambiente Tumoral/genética , Animais , Aquaporinas/genética , Feminino , Camundongos Nus , Invasividade Neoplásica/genética , Invasividade Neoplásica/patologia , Transplante de Neoplasias , Células Tumorais Cultivadas
16.
Aging (Albany NY) ; 12(2): 1527-1544, 2020 01 22.
Artigo em Inglês | MEDLINE | ID: mdl-31969493

RESUMO

Hepatocellular carcinoma (HCC) is the most common type of liver cancer worldwide, and it is the second leading cause of cancer-related mortality. Aquaporin 9 (AQP9) is an essential aquaporin in the liver and located in the basolateral membrane of hepatocytes, but its roles on HCC has not been completely elucidated. This study investigated the regulatory functions of AQP9 in the pathogenesis of HCC. The expression levels of AQP9 were significantly down-regulated in HCC tissues and cells, which was also correlated with tumor size and number, TNM stage, five-year survival rate, lymphatic and distal metastasis within the patients. Furthermore, overexpressed AQP9 suppressed the proliferation, migration and invasion of HCC cells. The levels of PCNA, E-cad, N-cad, α-SMA, DVL2, GSK-3ß, cyclinD1 and ß-catenin in HCC cells were reduced by overexpressed AQP9, while cell apoptosis was remarkably enhanced. Additionally, following the treatment with Wnt/ß-catenin signaling inhibitor (XAV939), the proliferative activity of HCC cells was significantly inhibited; PCNA and EMT-related markers were down-regulated; migration and invasion of cells were notably suppressed; cell apoptotic rate was decreased. Vice versa, after the cells were treated with Wnt/ß-catenin inducer (SKL2001), the effects caused by overexpressed AQP9 were abrogated. In vivo studies indicated that tumor volume and weight were remarkably decreased in AQP9 overexpression group, where the levels of Wnt/ß-catenin signaling- and EMT-associated molecules were also reduced. Taken together, our results suggested that overexpressed AQP9 could inhibit growth and metastasis of HCC cells via Wnt/ß-catenin pathway. AQP9 may be a promising therapeutic target for the treatment of patients with HCC.


Assuntos
Aquaporinas/metabolismo , Carcinoma Hepatocelular/metabolismo , Neoplasias Hepáticas/metabolismo , Via de Sinalização Wnt , Adulto , Idoso , Apoptose/genética , Aquaporinas/genética , Biomarcadores Tumorais , Carcinoma Hepatocelular/genética , Carcinoma Hepatocelular/mortalidade , Carcinoma Hepatocelular/patologia , Linhagem Celular Tumoral , Feminino , Humanos , Neoplasias Hepáticas/genética , Neoplasias Hepáticas/mortalidade , Neoplasias Hepáticas/patologia , Masculino , Pessoa de Meia-Idade , Gradação de Tumores , Metástase Neoplásica , Estadiamento de Neoplasias
17.
Front Mol Neurosci ; 13: 613976, 2020.
Artigo em Inglês | MEDLINE | ID: mdl-33613191

RESUMO

Ischemic stroke is one of the leading causes of global mortality and disability. It is a multi-factorial disease involving multiple factors, and gene dysregulation is considered as the major molecular mechanisms underlying disease progression. Angiogenesis can promote collateral circulation, which helps the restoration of blood supply in the ischemic area and reduces ischemic necrosis following ischemic injury. Aberrant expression of long non-coding RNAs (lncRNAs) in ischemic stroke is associated with various biological functions of endothelial cells and serves essential roles on the angiogenesis of ischemic stroke. The key roles of lncRNAs on angiogenesis suggest their potential as novel therapeutic targets for future diagnosis and treatment. This review elucidates the detailed regulatory functions of lncRNAs on angiogenesis following ischemic stroke through numerous mechanisms, such as interaction with target microRNAs, downstream signaling pathways and target molecules.

18.
Int J Oncol ; 54(6): 2157-2168, 2019 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-31081061

RESUMO

Gastric cancer (GC) is the fifth most prevalent type of malignancy and the third leading cause of cancer­related mortality worldwide, with the prognosis of patients with late­stage GC remaining at poor levels. Long non­coding RNA (lncRNA) H19 (H19) is involved in the growth and metastasis of tumors, and it is upregulated under hypoxic conditions and in certain types of cancer; however, the underlying mechanisms of action of this lncRNA as regards the initiation and development of GC remain unknown. Thus, in the present study, we aimed to determine the role of lncRNA H19 in GC and to elucidate the underlying mechanisms. H19 was found to be upregulated in GC tissues and cells compared with the para­cancerous tissues, and an elevated expression of H19 was associated with lymph node metastasis and TNM stage. Furthermore, the downregulation of H19 suppressed the proliferation, invasion, migration and epithelial­mesenchymal transition of GC cells in vitro and suppressed tumor growth in vivo. H19 was also found to be able to bind with miR­22­3p, and H19­induced cell growth and metastasis were shown to be reversed by the upregulation of miR­22­3p; the miR­22­3p level was found to inversely correlate with H19 expression in GC tissues. Furthermore, the overexpression of miR­22­3p notably suppressed the proliferation, migration and invasion of GC cells, and these effects were enhanced by the downregulation of Snail1. In addition, cell growth and metastasis induced by miR­22­3p downregulation were partially reversed by the knockdown of Snail1. Furthermore, a negative correlation was observed between the mRNA expression levels of miR­22­3p and Snail1 in GC tissues. On the whole, the findings of the present study revealed that H19 was upregulated in GC tissues, which promoted tumor growth and metastasis via the miR­22­3p/Snail1 signaling pathway. In summary, these findings provide novel insight into the potential regulatory roles of H19 in GC, and suggest that the H19/miR­22­3p/Snail1 axis may prove to be a promising therapeutic target for the treatment of patients with GC.


Assuntos
MicroRNAs/genética , RNA Longo não Codificante/genética , Fatores de Transcrição da Família Snail/genética , Neoplasias Gástricas/patologia , Regulação para Cima , Idoso , Animais , Linhagem Celular Tumoral , Movimento Celular , Proliferação de Células , Transição Epitelial-Mesenquimal , Regulação Neoplásica da Expressão Gênica , Humanos , Metástase Linfática , Masculino , Camundongos , Pessoa de Meia-Idade , Estadiamento de Neoplasias , Transplante de Neoplasias , Neoplasias Gástricas/genética
19.
Medicine (Baltimore) ; 98(13): e15011, 2019 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-30921222

RESUMO

BACKGROUND: Proton pump inhibitors (PPIs) are commonly used in the treatment of acid-related diseases; however, the association between the use of PPIs and potential risk of hypomagnesemia is controversial. METHODS: In the present study, databases including PubMed, EMBASE, MEDLINE, PsycINFO, CINAHL, the Cochrane Library, and 4 Chinese databases were searched since the inception until April 2018. Previous observational studies on the incidence of hypomagnesemia in individuals exposed to PPIs were included. RESULTS: This systematic review involved 15 studies including 129,347 participants, and the sample size varied from 52 to 95,205. Meta-analysis of 14 studies indicated that the use of PPIs increased the risk of hypomagnesemia [RR, 1.44, 95% CI, 1.13-1.76; I, 85.2%]. Subgroup analysis revealed that the use of PPI was not associated with the incidence of hypomagnesemia in outpatients [RR, 1.49; 95% CI, 0.83-2.14; I, 41.4%] and hospitalized patients [RR, 1.05; 95% CI, 0.81-1.29; I, 62.1%], respectively. The use of PPIs was not related to the risk of hypomagnesemia based on the cut-off values of 1.8 mg/dL [RR, 1.73; 95% CI, 0.87-2.58; I, 65.2%], 1.7 mg/dL [RR, 1.48; 95% CI, 0.90-2.06; I, 87.6%], and 1.6 mg/dL [RR, 0.98; 95% CI, 0.69-1.27; I, 67.9%]. CONCLUSION: The association between the exposure to PPI and the incidence of hypomagnesemia remained unclear. Due to the remarkable heterogeneity in previous studies, a definitive conclusion could not be drawn. Further research should be conducted to investigate the relationship between the use of individual PPI and potential risk of hypomagnesemia, and a dose-response analysis may be required.


Assuntos
Deficiência de Magnésio/induzido quimicamente , Inibidores da Bomba de Prótons/efeitos adversos , Adolescente , Adulto , Idoso , Idoso de 80 Anos ou mais , Feminino , Humanos , Incidência , Deficiência de Magnésio/epidemiologia , Masculino , Pessoa de Meia-Idade , Fatores de Risco , Adulto Jovem
20.
Transl Cancer Res ; 8(1): 330-337, 2019 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-35116762

RESUMO

Primary hepatocellular carcinoma (HCC) is a common malignant tumor in China and is often accompanied by portal hypertension (PHT). Whether simultaneous operation can be used in patients with liver cirrhosis and PHT accompanied by HCC is controversial. The aim of the present study was to investigate the safety and feasibility of simultaneous laparoscopic hepatectomy, splenectomy and pericardial devascularization in the treatment of HCC with PHT. A total of 16 patients were treated with laparoscopic surgery for PHT and HCC from April 2011. The operation time, volume of intraoperative blood loss, red blood cell transfusion, plasma transfusion, time for diet intake, drainage time, duration of hospital stay and occurrence of complications were observed. The follow-up time was 3 years, and long-term outcomes included overall survival rates and recurrence-free survival rates. The operation time and volume of blood loss were 336±18 min and 337±351 mL, respectively. Of the patients, 2 received intraoperative homologous blood transfusion and 9 received plasma transfusion. The time for diet intake, drainage time and duration of hospital stay were 3.5±0.5, 7.3±1.0 and 13.6±3.6 days, respectively. The postoperative complications included 1 patient with anastomosis-site bleeding, 2 patients with abdominal effusion and 3 patients with portal vein thrombosis, which were treated conservatively. The overall survival rates at 1 and 3 years were 100% (16/16) and 87.5% (14/16), respectively. The recurrence-free survival rates at 1 and 3 years were 87.5% (14/16) and 62.5% (10/16), respectively. In conclusion, simultaneous laparoscopic hepatectomy, splenectomy and pericardial devascularization is an effective treatment for PHT and primary HCC, and provides a potential new therapy for patients.

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