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1.
Plant Cell Rep ; 43(7): 165, 2024 Jun 11.
Artigo em Inglês | MEDLINE | ID: mdl-38861173

RESUMO

KEY MESSAGE: SmSAUR4, SmSAUR18, SmSAUR28, SmSAUR37, and SmSAUR38 were probably involved in the auxin-mediated root development in Salvia miltiorrhiza. Salvia miltiorrhiza is a widely utilized medicinal plant in China. Its roots and rhizomes are the main medicinal portions and are closely related to the quality of this herb. Previous studies have revealed that auxin plays pivotal roles in S. miltiorrhiza root development. Whether small auxin-up RNA genes (SAURs), which are crucial early auxin response genes, are involved in auxin-mediated root development in S. miltiorrhiza is worthy of investigation. In this study, 55 SmSAUR genes in S. miltiorrhiza were identified, and their physical and chemical properties, gene structure, cis-acting elements, and evolutionary relationships were analyzed. The expression levels of SmSAUR genes in different organs of S. miltiorrhiza were detected using RNA-seq combined with qRT‒PCR. The root development of S. miltiorrhiza seedlings was altered by the application of indole-3-acetic acid (IAA), and Pearson correlation coefficient analysis was conducted to screen SmSAURs that potentially participate in this physiological process. The diameter of primary lateral roots was positively correlated with SmSAUR4. The secondary lateral root number was positively correlated with SmSAUR18 and negatively correlated with SmSAUR4. The root length showed a positive correlation with SmSAUR28 and SmSAUR37 and a negative correlation with SmSAUR38. The fresh root biomass exhibited a positive correlation with SmSAUR38 and a negative correlation with SmSAUR28. The aforementioned SmSAURs were likely involved in auxin-mediated root development in S. miltiorrhiza. Our study provides a comprehensive overview of SmSAURs and provides the groundwork for elucidating the molecular mechanism underlying root morphogenesis in this species.


Assuntos
Regulação da Expressão Gênica de Plantas , Ácidos Indolacéticos , Proteínas de Plantas , Raízes de Plantas , Salvia miltiorrhiza , Raízes de Plantas/genética , Raízes de Plantas/crescimento & desenvolvimento , Salvia miltiorrhiza/genética , Salvia miltiorrhiza/crescimento & desenvolvimento , Regulação da Expressão Gênica de Plantas/efeitos dos fármacos , Ácidos Indolacéticos/metabolismo , Ácidos Indolacéticos/farmacologia , Proteínas de Plantas/genética , Proteínas de Plantas/metabolismo , Família Multigênica , Filogenia , Genes de Plantas , Genoma de Planta , Plântula/genética , Plântula/crescimento & desenvolvimento , Plântula/efeitos dos fármacos
2.
Breast Cancer Res Treat ; 201(3): 353-366, 2023 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-37433992

RESUMO

PURPOSE: Breast cancer (BC) is the most frequent malignant tumor in women worldwide with exceptionally high morbidity. The RNA-binding protein MEX3A plays a crucial role in genesis and progression of multiple cancers. We attempted to explore its clinicopathological and functional significance in BC in which MEX3A is expressed. METHODS: The expression of MEX3A detected by RT-qPCR and correlated the results with clinicopathological variables in 53 BC patients. MEX3A and IGFBP4 profile data of BC patients were downloaded from TCGA and GEO database. Kaplan-Meier (KM) analysis was used to estimate the survival rate of BC patients. Western Blot, CCK-8, EdU, colony formation and flow cytometry were performed to investigate the role of MEX3A and IGFBP4 in BC cell proliferation, invasion and cell cycle in vitro. A subcutaneous tumor mouse model was constructed to analyze in vivo growth of BC cells after MEX3A knockdown. The interactions among MEX3A and IGFBP4 were measured by RNA pull-down and RNA immunoprecipitation. RESULTS: The expression of MEX3A was upregulated in BC tissues compared to adjacent tissues and high expression of MEX3A was associated with poor prognosis. Subsequent in vitro studies demonstrated that MEX3A knockdown inhibited BC cells proliferation and migration, as well as xenograft tumor growth in vivo. The expression of IGFBP4 was significantly negatively correlated with MEX3A in BC tissues. Mechanistic investigation showed that MEX3A binds to IGFBP4 mRNA in BC cells, decreasing IGFBP4 mRNA levels, which further activated the PI3K/AKT and other downstream signaling pathways implicated cell cycle progression and cell migration. CONCLUSION: Our results indicate that MEX3A plays a prominent oncogenic role in BC tumorigenesis and progression by targeting IGFBP4 mRNA and activating PI3K/AKT signaling, which can be used as a novel therapeutic target for BC.


Assuntos
Neoplasias da Mama , Camundongos , Animais , Humanos , Feminino , Neoplasias da Mama/patologia , Proteínas Proto-Oncogênicas c-akt/metabolismo , Fosfatidilinositol 3-Quinases/genética , Fosfatidilinositol 3-Quinases/metabolismo , Linhagem Celular Tumoral , Proliferação de Células/genética , Regulação Neoplásica da Expressão Gênica , RNA , Movimento Celular/genética , Fosfoproteínas/genética , Fosfoproteínas/metabolismo , Proteínas de Ligação a RNA/genética
3.
Planta ; 258(2): 33, 2023 Jun 28.
Artigo em Inglês | MEDLINE | ID: mdl-37378716

RESUMO

MAIN CONCLUSION: The physiological and transcriptome analysis revealed that auxin was a positive regulator of lateral root development and tanshinone accumulation in Salvia miltiorrhiza. Roots of S. miltiorrhiza are widely used as medicinal materials in China, and the root morphology and content of bioactive compounds [such as phenolic acids and diterpenoid quinones (tanshinones)] are the main factors to determine the quality of this herb. Auxin regulates root development and secondary metabolism in many plant species, but little is known about its function in S. miltiorrhiza. In this study, S. miltiorrhiza seedlings were treated (exogenous application) with the auxin indole-3-acetic acid (IAA) and the polar auxin transport inhibitor N-1-naphthylphthalamic acid (NPA) to investigate the regulatory roles of auxin in S. miltiorrhiza. The results indicated that exogenous IAA promoted both lateral root development and tanshinones biosynthesis in S. miltiorrhiza. The NPA application suppressed the lateral root development but showed no obvious effects on tanshinones accumulation. Based on the RNA-seq analysis, expressions of genes related to auxin biosynthesis and signaling transduction were altered in both treated groups. Coincidental with the enhanced content of tanshinones, transcripts of several key enzyme genes in the tanshinones biosynthetic pathway were stimulated after the exogenous IAA application. The expression profiles of seven common transcription factor domain-containing gene families were analyzed, and the results implied that some AP2/ERF genes were probably responsible for the auxin-induced lateral root development in S. miltiorrhiza. These findings shed new light on the regulatory roles of auxin on root development and bioactive compounds biosynthesis in S. miltiorrhiza, and lay the groundwork for future research into the detailed molecular mechanism underlying these biological functions.


Assuntos
Anti-Infecciosos , Salvia miltiorrhiza , Abietanos , Perfilação da Expressão Gênica , Regulação da Expressão Gênica de Plantas , Raízes de Plantas/genética , Raízes de Plantas/metabolismo , Salvia miltiorrhiza/genética , Salvia miltiorrhiza/metabolismo , Transcriptoma , Anti-Infecciosos/toxicidade
4.
Eur Radiol ; 31(8): 6030-6038, 2021 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-33560457

RESUMO

OBJECTIVES: To develop and validate a PET/CT nomogram for preoperative estimation of lymph node (LN) staging in patients with non-small cell lung cancer (NSCLC). METHODS: A total of 263 pathologically confirmed LNs from 124 patients with NCSLC were retrospectively analyzed. Positron-emission tomography/computed tomography (PET/CT) examination was performed before treatment according to the clinical schedule. In the training cohort (N = 185), malignancy-related features, such as SUVmax, short-axis diameter (SAD), and CT radiomics features, were extracted from the regions of LN based on the PET/CT scan. The Minimum-Redundancy Maximum-Relevance (mRMR) algorithm and the Least Absolute Shrinkage and Selection Operator (LASSO) regression model were used for feature selection and radiomics score building. The radiomics score (Rad-Score) and SUVmax were incorporated in a PET/CT nomogram using the multivariable logistic regression analysis. The performance of the proposed model was evaluated with discrimination, calibration, and clinical application in an independent testing cohort (N = 78). RESULTS: The radiomics scores consisting of 14 selected features were significantly associated with LN status for both training cohort with AUC of 0.849 (95% confidence interval (CI), 0.796-0.903) and testing cohort with AUC of 0.828 (95% CI, 0.782-0.919). The PET/CT nomogram incorporating radiomics score and SUVmax showed moderate improvement of the efficiency with AUC of 0.881 (95% CI, 0.834-0.928) in the training cohort and AUC of 0.872 (95% CI, 0.797-0.946) in the testing cohort. The decision curve analysis indicated that the PET/CT nomogram was clinically useful. CONCLUSION: The PET/CT nomogram, which incorporates Rad-Score and SUVmax, can improve the diagnostic performance of LN metastasis. KEY POINTS: • The PET/CT nomogram (Int-Score) based on lymph node (LN) PET/CT images can reliably predict LN status in NSCLC. • Int-Score is a relatively objective diagnostic method, which can play an auxiliary role in the process of clinicians making treatment decisions.


Assuntos
Carcinoma Pulmonar de Células não Pequenas , Neoplasias Pulmonares , Carcinoma Pulmonar de Células não Pequenas/diagnóstico por imagem , Humanos , Neoplasias Pulmonares/diagnóstico por imagem , Nomogramas , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada , Estudos Retrospectivos , Tomografia Computadorizada por Raios X
5.
Exp Mol Pathol ; 121: 104658, 2021 08.
Artigo em Inglês | MEDLINE | ID: mdl-34102210

RESUMO

This paper was aimed at exploring the correlation of long non-coding RNA (lncRNA)-ABHD11 Antisense RNA1 (ABHD11-AS1) with the poor prognosis of patients with papillary thyroid carcinoma (PTC) and at investigating its effects on the survival of PTC cells. Serum was respectively collected from 64 PTC patients who were admitted to our hospital (PTC group) and from 50 healthy controls who underwent physical examinations (HC group) both from April 2011 to April 2015. The expression levels of ABHD11-AS1 in the serum were detected, and the values of it for diagnosis and prognosis (5-year follow-ups) were analyzed. The knockdown and overexpression models of ABHD11-AS1 in were constructed to explore the effects of the models on their proliferation, cycles and apoptosis. According to the data, the expression levels of serum ABHD11-AS1 in the PTC patients were remarkably higher than those in the healthy controls, and the area under the curve (AUC) for distinguishing the patients from the controls was 0.920. In the analysis of prognosis, the levels in patients with a poor prognosis were remarkably higher than those in patients with a good prognosis. According to the curves of overall survival rates (OSRs), the high levels of ABHD11-AS1 were remarkably correlated with the poor prognosis (a lower 5-year OSR). COX analysis showed that TNM staging, lymph node metastasis and ABHD11-AS1 were the independent prognostic factors of PTC patients. In the cell experiments, knocking down ABHD11-AS1 remarkably inhibited PTC cells from proliferation, arrested them in G0/G1 phase, and induced their apoptosis, negatively affecting their survival indices. Overexpressing this RNA had positive effects on the survival indices. Taken together, high levels of serum ABHD11-AS1 are related to the poor prognosis of PTC patients, and knocking down its expression can inhibit the survival of PTC cells.


Assuntos
Biomarcadores Tumorais/metabolismo , RNA Antissenso/genética , RNA Longo não Codificante/genética , Serina Proteases/genética , Câncer Papilífero da Tireoide/patologia , Neoplasias da Glândula Tireoide/patologia , Apoptose , Biomarcadores Tumorais/genética , Estudos de Casos e Controles , Movimento Celular , Proliferação de Células , Feminino , Seguimentos , Regulação Neoplásica da Expressão Gênica , Humanos , Masculino , Pessoa de Meia-Idade , Prognóstico , Taxa de Sobrevida , Câncer Papilífero da Tireoide/genética , Câncer Papilífero da Tireoide/metabolismo , Neoplasias da Glândula Tireoide/genética , Neoplasias da Glândula Tireoide/metabolismo , Células Tumorais Cultivadas
6.
Int J Med Sci ; 18(2): 441-447, 2021.
Artigo em Inglês | MEDLINE | ID: mdl-33390813

RESUMO

Papillary thyroid carcinoma (PTC) is the major subtype of thyroid cancer, accounting for 75%-85% of all thyroid malignancies. This study aimed to identify the association between the interactions of single nucleotide polymorphisms (SNPs) in RAS family genes and PTC in the Han Chinese population, to provide clues to the pathogenesis and potential therapeutic targets for PTC. Hap Map and NCBI-db SNP databases were used to retrieve SNPs. Haploview 4.2 software was used to filter SNPs based on specific parameters, six SNPs of RAS gene (KRAS-rs12427141, KRAS-rs712, KRAS-rs7315339, HRAS-rs12628, NRAS-rs14804 and NRAS-rs2273267) were genotyped by matrix-assisted laser desorption/ionization time of flight mass spectrometry (MALDI-TOF-MS) in 673 PTC patients and 657 healthy controls, the interactive effect was evaluated by crossover analysis, logistic regression and GMDR software. We found that genetic mutation in rs712 have significant associations with PTC risk after Bonferroni correction (p<0.001). The interaction between KRAS-rs12427141 and HRAS-rs12628 increased the risk of PTC (U=-2.119, p<0.05), the interaction between KRAS-rs2273267 and HRAS-rs7315339 reduced the risk of PTC (U=2.195, p<0.05). GMDR analysis showed that the two-factor model (KRAS-rs712, NRAS-rs2273267) was the best (p=0.0107). Summarily, there are PTC-related interactions between RAS family genes polymorphisms in the Han Chinese population.


Assuntos
GTP Fosfo-Hidrolases/genética , Proteínas de Membrana/genética , Proteínas Proto-Oncogênicas p21(ras)/genética , Câncer Papilífero da Tireoide/genética , Neoplasias da Glândula Tireoide/genética , Adulto , Povo Asiático/genética , Estudos de Casos e Controles , Estudos Cross-Over , Feminino , Predisposição Genética para Doença , Estudo de Associação Genômica Ampla , Humanos , Masculino , Pessoa de Meia-Idade , Mutação , Polimorfismo de Nucleotídeo Único , Câncer Papilífero da Tireoide/patologia , Glândula Tireoide/patologia , Neoplasias da Glândula Tireoide/patologia
7.
Int J Mol Sci ; 19(3)2018 Feb 27.
Artigo em Inglês | MEDLINE | ID: mdl-29495531

RESUMO

Seed microbiome includes special endophytic or epiphytic microbial taxa associated with seeds, which affects seed germination, plant growth, and health. Here, we analyzed the core microbiome of 21 Salvia miltiorrhiza seeds from seven different geographic origins using 16S rDNA and ITS amplicon sequencing, followed by bioinformatics analysis. The whole bacterial microbiome was classified into 17 microbial phyla and 39 classes. Gammaproteobacteria (67.6%), Alphaproteobacteria (15.6%), Betaproteobacteria (2.6%), Sphingobacteria (5.0%), Bacilli (4.6%), and Actinobacteria (2.9%) belonged to the core bacterial microbiome. Dothideomycetes comprised 94% of core fungal microbiome in S. miltiorrhiza seeds, and another two dominant classes were Leotiomycetes (3.0%) and Tremellomycetes (2.0%). We found that terpenoid backbone biosynthesis, degradation of limonene, pinene, and geraniol, and prenyltransferases, were overrepresented in the core bacterial microbiome using phylogenetic examination of communities by reconstruction of unobserved states (PICRUSt) software. We also found that the bacterial genera Pantoea, Pseudomonas, and Sphingomonas were enriched core taxa and overlapped among S. miltiorrhiza, maize, bean, and rice, while a fungal genus, Alternaria, was shared within S. miltiorrhiza, bean, and Brassicaceae families. These findings highlight that seed-associated microbiomeis an important component of plant microbiomes, which may be a gene reservoir for secondary metabolism in medicinal plants.


Assuntos
Microbiota , Plantas Medicinais/microbiologia , Salvia miltiorrhiza/microbiologia , Sementes/microbiologia , Biodiversidade , Variação Genética , Metagenoma , Metagenômica/métodos , Plantas Medicinais/classificação , Plantas Medicinais/genética , Plantas Medicinais/metabolismo , RNA Ribossômico 16S/genética , Salvia miltiorrhiza/classificação , Salvia miltiorrhiza/genética , Salvia miltiorrhiza/metabolismo , Sementes/metabolismo
8.
Tumour Biol ; 36(6): 4319-26, 2015 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-25596086

RESUMO

Apoptosis is an important mechanism of malignant tumor formation and progression. Single nucleotide polymorphisms (SNPs) located within cell death genes may influence cancer risk. We explored the relationship between FasL -844T/C and/or Fas -1377G/A SNPs and pulmonary adenocarcinoma (AD). Two hundred seventy-five patients with pulmonary AD of South China admitted into Zhejiang Cancer Hospital from July 2007 to October 2011 were randomly selected, and their clinicopathological data were collected at the same time. Two hundred ninety-seven cases of healthy individuals were selected as control. FasL -844T/C and Fas -1377G/A SNPs were detected by PCR-RFLP technique to evaluate the relationships between these two SNPs and pulmonary AD. Age, FasL -844 and Fas -1377 SNPs were associated with increased risk of pulmonary AD susceptibility in main effect analysis. FasL -844CC and Fas -1377 AA were associated with an increased risk for the development of pulmonary AD only in age <60 years people, but not in those ≥60 years. FasL -844CC genotype was associated with an increased risk for pulmonary AD (adjusted OR = 2.010, 95 % CI 1.196-3.379, P = 0.008) compared with TT genotype. However, Fas -1377 AA was a risk factor only when FasL -844 genotype was CC. Fas -1377 genotypes showed significant effect modification of pulmonary AD risk by FasL -844 genotype with test of the interaction term adjusting for age, gender, and FasL -844 SNP. Fas -1377G/A was not associated with the clinicopathological factors, while FasL -844C/T was associated with tumor stage and lymph node metastasis in age ≥60 years people and tumor stage in those <60 years. In conclusion, FasL -844 SNP is associated with the susceptibility of pulmonary AD in age <60 years people. Fas -1377 SNP may modify the association of FasL -844 SNP with the risk of pulmonary AD. FasL -844 genotype plays an important role in the occurrence and progression of pulmonary AD.


Assuntos
Adenocarcinoma/genética , Proteína Ligante Fas/genética , Predisposição Genética para Doença , Neoplasias Pulmonares/genética , Receptor fas/genética , Adenocarcinoma/patologia , Adenocarcinoma de Pulmão , Adulto , Idoso , Apoptose , China , Feminino , Estudos de Associação Genética , Genótipo , Humanos , Neoplasias Pulmonares/patologia , Masculino , Pessoa de Meia-Idade , Polimorfismo de Nucleotídeo Único , Fatores de Risco
9.
Indian J Med Res ; 139(2): 273-8, 2014 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-24718403

RESUMO

BACKGROUND & OBJECTIVES: The association between α-adducin gene G614T polymorphism and essential hypertension (EH) is not clear. The present study was carried out to examine a possible association between α-adducin gene G614T mutation and essential hypertension in Chinese population. METHODS: A total of 170 patients with essential hypertension (EH group) and 154 normotensive subjects (Control group) were genotyped for the cytoskeletal protein single nucleotide polymorphism G614T of the α-adducin gene by PCR-RFLP technique. Systolic blood pressure (SBP), diastolic blood pressure (DBP), body mass index (BMI), low density lipoprotein (LDL), high-density lipoprotein (HDL), high-sensitivity C-reactive protein (hs-CRP), left atrial diameter (LA DIA), left ventricular diameter (LV DIA) and other parameters were recorded in EH group. RESULTS: There was significant association between EH and α-adducin genotypes (P<0.05). GT and TT genotypes in EH group had higher LDL levels as compared to GG carriers (P<0.05). The LDL concentration was significantly elevated in patients with GT and TT genotypes. The LDL levels also differed significantly in male patients with all the three genotypes. INTERPRETATION & CONCLUSIONS: A significant association was found between ADD1 gene G614T polymorphism and EH in Chinese patients. Further studies need to be done to confirm these findings in a large sample.


Assuntos
Proteínas de Ligação a Calmodulina/genética , Estudos de Associação Genética , Hipertensão/genética , Lipoproteínas LDL/sangue , Adulto , Idoso , Pressão Sanguínea , Proteína C-Reativa/metabolismo , Hipertensão Essencial , Feminino , Humanos , Hipertensão/sangue , Hipertensão/patologia , Masculino , Pessoa de Meia-Idade , Polimorfismo de Nucleotídeo Único
10.
Sheng Wu Yi Xue Gong Cheng Xue Za Zhi ; 31(6): 1319-24, 2014 Dec.
Artigo em Zh | MEDLINE | ID: mdl-25868252

RESUMO

Recombinant protein SMB(PRG4) containing two Somatomedin B domains and a small amount of glycosylation of repetitive sequences of proteoglycan 4 was cloned according to PGR4 gene polymorphism. Mature purification process was established and recombinant protein SMB(PRG4), with high-level expression was purified. By using size-exclusion chromatogaraphy and dynamic light scattering, we found that the recombinant protein self-aggregate to dimeric form. Structure prediction and non-reducing electrophoresis revealed that SMB(PRG4), was a non-covalently bonded dimer.


Assuntos
Proteoglicanas/química , Proteínas Recombinantes/química , Somatomedinas/química , Glicosilação , Multimerização Proteica
11.
Int J Nanomedicine ; 19: 9549-9574, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39296941

RESUMO

Molecular imaging is an advanced technology that utilizes specific probes or markers in conjunction with cutting-edge imaging techniques to observe and analyze the localization, distribution, activity, and interactions of biomolecules within living organisms. Tumor molecular imaging, by enabling the visualization and quantification of molecular characteristics of tumor cells, facilitates a deeper and more comprehensive understanding of tumors, providing valuable insights for early diagnosis, treatment monitoring, and cancer biology research. However, the image quality of molecular imaging still requires improvement, and nanotechnology has significantly propelled the advancement of molecular imaging. Currently, nanoparticle-based tumor molecular imaging technologies encompass radionuclide imaging, fluorescence imaging, magnetic resonance imaging, ultrasound imaging, photoacoustic imaging, and multimodal imaging, among others. As our understanding of the tumor microenvironment deepens, the design of nanoparticle probes for tumor molecular imaging has also evolved, offering new perspectives and expanding the applications of tumor molecular imaging. Beyond diagnostics, there is a marked trend towards integrated diagnosis and therapy, with image-guided treatment playing a pivotal role. This includes image-guided surgery, photodynamic therapy, and chemodynamic therapy. Despite continuous advancements and innovative developments in molecular imaging, many of these remain in the experimental stage and require breakthroughs before they can be fully integrated into clinical practice.


Assuntos
Imagem Molecular , Nanopartículas , Neoplasias , Neoplasias/diagnóstico por imagem , Imagem Molecular/métodos , Imagem Molecular/tendências , Microambiente Tumoral
12.
Clin Nucl Med ; 49(1): 91-92, 2024 Jan 01.
Artigo em Inglês | MEDLINE | ID: mdl-38015022

RESUMO

ABSTRACT: Contrast-enhanced MRI was performed on a 17-year-old adolescent boy with chronic lumbar and lower-limb pain, which had worsened over the past 3 days. It revealed a suspicious malignant mass adjacent to right appendage of L5-S1 vertebrae, with mixed signals and heterogeneous and obvious enhancement. 18 F-FDG PET/CT was subsequently performed for staging. It showed an FDG-avid mass with mixed density in right psoas major muscle, involving adjacent appendage of L5-S1 vertebrae. Histopathological examination confirmed the mass to be gouty tophus, characterized by nodular homogeneous pink amorphous deposits around the cartilage tissue, surrounded by histiocytes and multinucleated giant cells.


Assuntos
Gota , Neoplasias , Masculino , Humanos , Adolescente , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada , Fluordesoxiglucose F18 , Tomografia por Emissão de Pósitrons , Neoplasias/patologia , Estadiamento de Neoplasias
13.
Adv Sci (Weinh) ; 11(1): e2303570, 2024 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-37939296

RESUMO

As one of novel hallmarks of cancer, lipid metabolic reprogramming has recently been becoming fascinating and widely studied. Lipid metabolic reprogramming in cancer is shown to support carcinogenesis, progression, distal metastasis, and chemotherapy resistance by generating ATP, biosynthesizing macromolecules, and maintaining appropriate redox status. Notably, increasing evidence confirms that lipid metabolic reprogramming is under the control of dysregulated non-coding RNAs in cancer, especially lncRNAs and circRNAs. This review highlights the present research findings on the aberrantly expressed lncRNAs and circRNAs involved in the lipid metabolic reprogramming of cancer. Emphasis is placed on their regulatory targets in lipid metabolic reprogramming and associated mechanisms, including the clinical relevance in cancer through lipid metabolism modulation. Such insights will be pivotal in identifying new theranostic targets and treatment strategies for cancer patients afflicted with lipid metabolic reprogramming.


Assuntos
Neoplasias , RNA Longo não Codificante , Humanos , RNA Circular/metabolismo , RNA Longo não Codificante/genética , RNA Longo não Codificante/metabolismo , Reprogramação Metabólica , Neoplasias/genética , Neoplasias/metabolismo , Epigênese Genética/genética , Lipídeos
14.
NPJ Parkinsons Dis ; 10(1): 171, 2024 Sep 10.
Artigo em Inglês | MEDLINE | ID: mdl-39256393

RESUMO

Positron emission tomography/computed tomography (PET/CT) is a molecular imaging method commonly used to diagnose and differentiate Parkinson's disease (PD). This study aimed to evaluate the performance of PET/CT with 11C-2ß-Carbomethoxy-3ß-(4-fluorophenyl) tropane (11C-CFT) and 18F-fluorodeoxyglucose (18F-FDG) tracers in the differential diagnosis between PD, multiple system atrophy parkinsonian type (MSA-P), progressive supranuclear palsy (PSP) and vascular parkinsonism (VP) using the data of 220 patients with clinical PD-like symptoms. Of the 220 enrolled patients, 166 (PD, n = 80; MSA-P, n = 54; PSP, n = 15; VP, n = 17) completed the motor, cognitive and PET/CT assessment and were included in this study. 11C-CFT and 18F-FDG PET/CT images were analyzed using the SNBPI toolbox and CortexID Suite software. The uptake values of 11C-CFT and 18F-FDG PET/CT were compared among the groups after controlling for covariates using generalized linear models. Receiver operating characteristic (ROC) curves were generated to estimate the diagnostic values. Patients with PSP showed the most significant reduction on 11C-CFT PET/CT, while patients with PD and MSA-P showed similar reductions, and patients with VP did not show any significant reduction in 11C-CFT uptake. The areas under the curve (AUCs) for 11C-CFT PET/CT for distinguishing PD from VP, PSP, and MSA-P were 0.902, 0.830, and 0.580, respectively, and 0.728 for distinguishing advanced-stage PD from PSP. On 18F-FDG PET/CT, the AUCs for distinguishing PD from PSP and MSA-P were 0.968 and 0.963, respectively. These results suggest that 11C-CFT and 18F-FDG PET/CT complement each other in improving the accuracy in differential diagnosis of PD.

15.
Cell Mol Neurobiol ; 33(8): 1143-8, 2013 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-24046143

RESUMO

MicroRNA is strongly associated with tumor growth and development. This study examined the potential roles of miR-125b in glioma growth. We found that miR-125b promotes glioma cell line growth and clone formation, and protects the glioma cells from apoptosis in vitro. The miR-125b-transfected glioma cells also demonstrated increased growth after in vivo transplantation. We further identified that miR-125b inhibits Connexin43 expression, and the overexpression of Connexin43 antagonizes the effects of miR-125b in cell growth and anti-apoptosis. We conclude that miR-125b regulates glioma growth partly through Connexin43 protein.


Assuntos
Neoplasias Encefálicas/genética , Neoplasias Encefálicas/patologia , Conexina 43/antagonistas & inibidores , Glioma/genética , Glioma/patologia , MicroRNAs/metabolismo , Regiões 3' não Traduzidas/genética , Animais , Apoptose/efeitos dos fármacos , Apoptose/genética , Sequência de Bases , Linhagem Celular Tumoral , Proliferação de Células/efeitos dos fármacos , Células Clonais , Conexina 43/genética , Conexina 43/metabolismo , Dacarbazina/análogos & derivados , Dacarbazina/farmacologia , Regulação para Baixo/efeitos dos fármacos , Regulação para Baixo/genética , Regulação Neoplásica da Expressão Gênica/efeitos dos fármacos , Células HEK293 , Humanos , Camundongos , Camundongos Nus , MicroRNAs/genética , Dados de Sequência Molecular , Ligação Proteica/efeitos dos fármacos , Ligação Proteica/genética , RNA Mensageiro/genética , RNA Mensageiro/metabolismo , Ratos , Temozolomida
16.
Toxicol Mech Methods ; 23(1): 42-7, 2013 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-22992206

RESUMO

Infertility is one of the common complications in diabetic men and mainly due to the loss of germ cells by apoptotic cell death. Although several mechanisms have been proposed to explain the induction of testicular cell death by diabetes, diabetic induction of testicular oxidative stress and damage may be the predominant mechanism responsible for the testicular cell death in diabetes. To explore whether factors that either increase or decrease the testicular oxidative stress and damage will enhance or prevent diabetes-induced testicular cell death, the effect of zinc (Zn) deficiency on diabetes-induced cell death has been examined since Zn was found to play an important role in the protection of testis from oxidative stress and damage. Zn deficiency, induced by its chelator N,N,N,N-Tetrakis(2-pyridylmethyl)-1,2-ethylenediamine, was found to exacerbate diabetes-induced testicular oxidative damage and cell death. In contrast, treatment of diabetic rats with antioxidant N-acetylcysteine or low-dose radiation that can up-regulate endogenous antioxidants significantly attenuated diabetes-induced testicular cell death. These results suggest that diabetes-induced testicular cell death that may eventually cause men's infertility is predominantly mediated by the oxidative stress and damage. To prevent or delay diabetes-caused infertility, diabetic patients should avoid Zn deficiency, and might consider antioxidant supplementation.


Assuntos
Acetilcisteína/farmacologia , Apoptose , Deficiências Nutricionais/terapia , Diabetes Mellitus Experimental/terapia , Sequestradores de Radicais Livres/farmacologia , Zinco/deficiência , Animais , Apoptose/efeitos dos fármacos , Apoptose/efeitos da radiação , Quelantes/farmacologia , Deficiências Nutricionais/etiologia , Deficiências Nutricionais/metabolismo , Diabetes Mellitus Experimental/complicações , Diabetes Mellitus Experimental/metabolismo , Relação Dose-Resposta à Radiação , Etilenodiaminas/farmacologia , Infertilidade Masculina/etiologia , Infertilidade Masculina/metabolismo , Infertilidade Masculina/terapia , Masculino , Estresse Oxidativo/efeitos dos fármacos , Estresse Oxidativo/fisiologia , Estresse Oxidativo/efeitos da radiação , Doses de Radiação , Ratos , Testículo/efeitos dos fármacos , Testículo/patologia , Testículo/efeitos da radiação , Terapia por Raios X
17.
Clin Nucl Med ; 48(8): 694-696, 2023 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-37276495

RESUMO

ABSTRACT: Abdominal contrast-enhanced CT was performed in a 61-year-old man with difficulties of urination and defecation for 4 months, which revealed huge rectal masses involving multiple adjacent organs, suspected as malignant lesions. 18 F-FDG PET/CT was subsequently performed for staging. The images showed intense FDG uptake and slightly hyperdense masses involving rectum, bladder, prostate, left ureter, and the anterior abdominal wall at the level of the pelvic cavity. Histopathological examination confirmed the masses were due to malakoplakia, which displayed as abundant von Hansemann cells aggregated and infiltrated in lesions, with distinctive cytoplasmic inclusions termed Michaelis-Gutmann bodies.


Assuntos
Malacoplasia , Neoplasias , Masculino , Humanos , Pessoa de Meia-Idade , Fluordesoxiglucose F18 , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada , Malacoplasia/diagnóstico por imagem , Tomografia por Emissão de Pósitrons/métodos
18.
Front Immunol ; 14: 1128774, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-36798129

RESUMO

Colorectal cancer (CRC) is one of the most common cancers, with a high mortality rate, and is a major burden on human health worldwide. Gut microbiota regulate human immunity and metabolism through producing numerous metabolites, which act as signaling molecules and substrates for metabolic reactions in various biological processes. The importance of host-gut microbiota interactions in immunometabolic mechanisms in CRC is increasingly recognized, and interest in modulating the microbiota to improve patient's response to therapy has been raising. However, the specific mechanisms by which gut microbiota interact with immunotherapy and radiotherapy remain incongruent. Here we review recent advances and discuss the feasibility of gut microbiota as a regulatory target to enhance the immunogenicity of CRC, improve the radiosensitivity of colorectal tumor cells and ameliorate complications such as radiotoxicity. Currently, great breakthroughs in the treatment of non-small cell lung cancer and others have been achieved by radioimmunotherapy, but radioimmunotherapy alone has not been effective in CRC patients. By summarizing the recent preclinical and clinical evidence and considering regulatory roles played by microflora in the gut, such as anti-tumor immunity, we discuss the potential of targeting gut microbiota to enhance the efficacy of radioimmunotherapy in CRC and expect this review can provide references and fresh ideas for the clinical application of this novel strategy.


Assuntos
Carcinoma Pulmonar de Células não Pequenas , Neoplasias Colorretais , Microbioma Gastrointestinal , Neoplasias Pulmonares , Humanos , Microbioma Gastrointestinal/fisiologia , Radioimunoterapia/efeitos adversos , Carcinoma Pulmonar de Células não Pequenas/complicações , Neoplasias Pulmonares/complicações , Neoplasias Colorretais/radioterapia , Neoplasias Colorretais/metabolismo
19.
Artigo em Inglês | MEDLINE | ID: mdl-35392783

RESUMO

Since the authors are not responding to the editor's requests to fulfill the editorial requirement, therefore, the article has been withdrawn.Bentham Science apologizes to the readers of the journal for any inconvenience this may have caused.The Bentham Editorial Policy on Article Withdrawal can be found at https://benthamscience.com/editorial-policies-main.php. Bentham Science Disclaimer: It is a condition of publication that manuscripts submitted to this journal have not been published and will not be simultaneously submitted or published elsewhere. Furthermore, any data, illustration, structure or table that has been published elsewhere must be reported, and copyright permission for reproduction must be obtained. Plagiarism is strictly forbidden, and by submitting the article for publication the authors agree that the publishers have the legal right to take appropriate action against the authors, if plagiarism or fabricated information is discovered. By submitting a manuscript the authors agree that the copyright of their article is transferred to the publishers if and when the article is accepted for publication.

20.
Genes (Basel) ; 13(11)2022 10 25.
Artigo em Inglês | MEDLINE | ID: mdl-36360184

RESUMO

The quantitative real-time PCR (qRT-PCR) is an efficient and sensitive method for determining gene expression levels, but the accuracy of the results substantially depends on the stability of the reference gene (RG). Therefore, choosing an appropriate reference gene is a critical step in normalizing qRT-PCR data. Prunella vulgaris L. is a traditional Chinese medicine herb widely used in China. Its main medicinal part is the fruiting spike which is termed Spica Prunellae. However, thus far, few studies have been conducted on the mechanism of Spica Prunellae development. Meanwhile, no reliable RGs have been reported in P. vulgaris. The expression levels of 14 candidate RGs were analyzed in this study in various organs and at different stages of Spica Prunellae development. Four statistical algorithms (Delta Ct, BestKeeper, NormFinder, and geNorm) were utilized to identify the RGs' stability, and an integrated stability rating was generated via the RefFinder website online. The final ranking results revealed that eIF-2 was the most stable RG, whereas VAB2 was the least suitable as an RG. Furthermore, eIF-2 + Histon3.3 was identified as the best RG combination in different periods and the total samples. Finally, the expressions of the PvTAT and Pv4CL2 genes related to the regulation of rosmarinic acid synthesis in different organs were used to verify the stable and unstable RGs. The stable RGs in P. vulgaris were originally identified and verified in this work. This achievement provides strong support for obtaining a reliable qPCR analysis and lays the foundation for in-depth research on the developmental mechanism of Spica Prunellae.


Assuntos
Prunella , Prunella/genética , Fator de Iniciação 2 em Eucariotos , Reação em Cadeia da Polimerase em Tempo Real/métodos , Frutas , Expressão Gênica/genética
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