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Deciphering the Origins of P1-Induced Power Losses in Cu(In_(x),Ga_(1–x))Se2(CIGS)Modules Through Hyperspectral Luminescence
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作者 César Omar Ramírez Quiroz Laura-Isabelle Dion-Bertrand +2 位作者 Christoph J.Brabec Joachim Müller Kay Orgassa 《Engineering》 SCIE EI 2020年第12期1395-1402,共8页
In this report,we show that hyperspectral high-resolution photoluminescence mapping is a powerful tool for the selection and optimiz1ation of the laser ablation processes used for the patterning interconnections of su... In this report,we show that hyperspectral high-resolution photoluminescence mapping is a powerful tool for the selection and optimiz1ation of the laser ablation processes used for the patterning interconnections of subcells on Cu(Inx,Ga1-x)Se2(CIGS)modules.In this way,we show that in-depth monitoring of material degradation in the vicinity of the ablation region and the identification of the underlying mechanisms can be accomplished.Specifically,by analyzing the standard P1 patterning line ablated before the CIGS deposition,we reveal an anomalous emission-quenching effect that follows the edge of the molybdenum groove underneath.We further rationalize the origins of this effect by comparing the topography of the P1 edge through a scanning electron microscope(SEM)cross-section,where a reduction of the photoemission cannot be explained by a thickness variation.We also investigate the laser-induced damage on P1 patterning lines performed after the deposition of CIGS.We then document,for the first time,the existence of a short-range damaged area,which is independent of the application of an optical aperture on the laser path.Our findings pave the way for a better understanding of P1-induced power losses and introduce new insights into the improvement of current strategies for industry-relevant module interconnection schemes. 展开更多
关键词 Cu(In_(x) Ga_(1-x))Se2 Cell-to-module efficiency gap p1-induced power losses Hyperspectral photoluminescence Laser ablation short-range heat effect
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circPVT1 promotes silica-induced epithelial-mesenchymal transition by modulating the miR-497-5p/TCF3 axis
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作者 Siyun Zhou Yan Li +5 位作者 Wenqing Sun Dongyu Ma Yi Liu Demin Cheng Guanru Li Chunhui Ni 《Journal of Biomedical Research》 CAS CSCD 2024年第2期163-174,I0011-I0015,共17页
Epithelial-mesenchymal transition(EMT)is a vital pathological feature of silica-induced pulmonary fibrosis.However,whether circRNA is involved in the process remains unclear.The present study aimed to investigate the ... Epithelial-mesenchymal transition(EMT)is a vital pathological feature of silica-induced pulmonary fibrosis.However,whether circRNA is involved in the process remains unclear.The present study aimed to investigate the role of circPVT1 in the silica-induced EMT and the underlying mechanisms.We found that an elevated expression of circPVT1 promoted EMT and enhanced the migratory capacity of silica-treated epithelial cells.The isolation of cytoplasmic and nuclear separation assay showed that circPVT1 was predominantly expressed in the cytoplasm.RNA immunoprecipitation assay and RNA pull-down experiment indicated that cytoplasmic-localized circPVT1 was capable of binding to miR-497-5p.Furthermore,we found that miR-497-5p attenuated the silica-induced EMT process by targeting transcription factor 3(TCF3),an E-cadherin transcriptional repressor,in the silica-treated epithelial cells.Collectively,these results reveal a novel role of the circPVT1/miR-497-5p/TCF3 axis in the silica-induced EMT process in lung epithelial cells.Once validated,this finding may provide a potential theoretical basis for the development of interventions and treatments for pulmonary fibrosis. 展开更多
关键词 SILICOSIS epithelial-mesenchymal transition circpVT1 miR-497-5p TCF3
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NQO1 Mediates Lenvatinib Resistance by Regulating ROS-induced Apoptosis in Hepatocellular Carcinoma
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作者 Wei XUE Ting WANG +3 位作者 Wen-jing TIAN Si-qi PANG Hua-feng ZHANG Wei-dong JIA 《Current Medical Science》 SCIE CAS 2024年第1期168-179,共12页
Objective Hepatocellular carcinoma(HCC)is the third leading cause of cancer-associated death worldwide.As a first-line drug for advanced HCC treatment,lenvatinib faces a significant hurdle due to the development of bo... Objective Hepatocellular carcinoma(HCC)is the third leading cause of cancer-associated death worldwide.As a first-line drug for advanced HCC treatment,lenvatinib faces a significant hurdle due to the development of both intrinsic and acquired resistance among patients,and the underlying mechanism remains largely unknown.The present study aims to identify the pivotal gene responsible for lenvatinib resistance in HCC,explore the potential molecular mechanism,and propose combinatorial therapeutic targets for HCC management.Methods Cell viability and colony formation assays were conducted to evaluate the sensitivity of cells to lenvatinib and dicoumarol.RNA-Seq was used to determine the differences in transcriptome between parental cells and lenvatinib-resistant(LR)cells.The upregulated genes were analyzed by GO and KEGG analyses.Then,qPCR and Western blotting were employed to determine the relative gene expression levels.Afterwards,the intracellular reactive oxygen species(ROS)and apoptosis were detected by flow cytometry.Results PLC-LR and Hep3B-LR were established.There was a total of 116 significantly upregulated genes common to both LR cell lines.The GO and KEGG analyses indicated that these genes were involved in oxidoreductase and dehydrogenase activities,and reactive oxygen species pathways.Notably,NAD(P)H:quinone oxidoreductase 1(NQO1)was highly expressed in LR cells,and was involved in the lenvatinib resistance.The high expression of NQO1 decreased the production of ROS induced by lenvatinib,and subsequently suppressed the apoptosis.The combination of lenvatinib and NQO1 inhibitor,dicoumarol,reversed the resistance of LR cells.Conclusion The high NQO1 expression in HCC cells impedes the lenvatinib-induced apoptosis by regulating the ROS levels,thereby promoting lenvatinib resistance in HCC cells. 展开更多
关键词 hepatocellular carcinoma lenvatinib resistance NAD(p)H quinone oxidoreductase 1 reactive oxygen species apoptosis DICOUMAROL
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Functionalized selenium nanoparticles ameliorated acetaminophen-induced hepatotoxicity through synergistically triggering PKCδ/Nrf2 signaling pathway and inhibiting CYP 2E1
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作者 Si Zou Yetao Gong +4 位作者 Xiujie Li Yanbin Wu Jinzhong Wu Jianguo Wu Ka-Hing Wong 《Food Science and Human Wellness》 SCIE CSCD 2024年第2期932-945,共14页
Selenium nanoparticles(SeNPs)have been demonstrated potential for use in diseases associated with oxidative stress.Functionalized SeNPs with lower toxicity and higher biocompatibility could bring better therapeutic ac... Selenium nanoparticles(SeNPs)have been demonstrated potential for use in diseases associated with oxidative stress.Functionalized SeNPs with lower toxicity and higher biocompatibility could bring better therapeutic activity and clinical application value.Herein,this work was conducted to investigate the protective effect of Pleurotus tuber-regium polysaccharide-protein complex funtionnalized SeNPs(PTR-SeNPs)against acetaminophen(APAP)-induced oxidative injure in HepG2 cells and C57BL/6J mouse liver.Further elucidation of the underlying molecular mechanism,in particular their modulation of Nrf2 signaling pathway was also performed.The results showed that PTR-SeNPs could significantly ameliorate APAP-induced oxidative injury as evidenced by a range of biochemical analysis,histopathological examination and immunoblotting study.PTR-SeNPs could hosphorylate and activate PKCδ,depress Keap1,and increase nuclear accumulation of Nrf2,resulting in upregulation of GCLC,GCLM,HO-1 and NQO-1 expression.Besides,PTR-SeNPs suppressed the biotransformation of APAP to generate intracellular ROS through CYP 2E1 inhibition,restoring the mitochondrial morphology.Furthermore,the protective effect of PTR-SeNPs against APAP induced hepatotoxicity was weakened as Nrf2 was depleted in vivo,indicating the pivotal role of Nrf2 signaling pathway in PTR-SeNPs mediated hepatoprotective efficacy.Being a potential hepatic protectant,PTR-SeNPs could serve as a new source of selenium supplement for health-promoting and biomedical applications. 展开更多
关键词 pTR-SeNps(polysaccharide-proteincomplex functionalized selenium nanoparticles) Acetaminophen-induced hepatotoxicity Nuclear factor erythroid 2-related factor 2 Cytochrome p450 enzyme 2E1 Mitochondria
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Quercetin ameliorates oxidative stress-induced senescence in rat nucleus pulposus-derived mesenchymal stem cells via the miR-34a-5p/SIRT1 axis 被引量:1
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作者 Wen-Jie Zhao Xin Liu +9 位作者 Man Hu Yu Zhang Peng-Zhi Shi Jun-Wu Wang Xu-Hua Lu Xiao-Fei Cheng Yu-Ping Tao Xin-Min Feng Yong-Xiang Wang Liang Zhang 《World Journal of Stem Cells》 SCIE 2023年第8期842-865,共24页
BACKGROUND Intervertebral disc degeneration(IDD)is a main contributor to low back pain.Oxidative stress,which is highly associated with the progression of IDD,increases senescence of nucleus pulposus-derived mesenchym... BACKGROUND Intervertebral disc degeneration(IDD)is a main contributor to low back pain.Oxidative stress,which is highly associated with the progression of IDD,increases senescence of nucleus pulposus-derived mesenchymal stem cells(NPMSCs)and weakens the differentiation ability of NPMSCs in degenerated intervertebral discs(IVDs).Quercetin(Que)has been demonstrated to reduce oxidative stress in diverse degenerative diseases.AIM To investigate the role of Que in oxidative stress-induced NPMSC damage and to elucidate the underlying mechanism.METHODS In vitro,NPMSCs were isolated from rat tails.Senescence-associatedβ-galactosidase(SA-β-Gal)staining,cell cycle,reactive oxygen species(ROS),realtime quantitative polymerase chain reaction(RT-qPCR),immunofluorescence,and western blot analyses were used to evaluated the protective effects of Que.Meanwhile the relationship between miR-34a-5p and Sirtuins 1(SIRT1)was evaluated by dual-luciferase reporter assay.To explore whether Que modulates tert-butyl hydroperoxide(TBHP)-induced senescence of NPMSCs via the miR-34a-5p/SIRT1 pathway,we used adenovirus vectors to overexpress and downregulate the expression of miR-34a-5p and used SIRT1 siRNA to knockdown SIRT1 expression.In vivo,a puncture-induced rat IDD model was constructed,and X rays and histological analysis were used to assess whether Que could alleviate IDD in vivo.RESULTS We found that TBHP can cause NPMSCs senescence changes,such as reduced cell proliferation ability,increased SA-β-Gal activity,cell cycle arrest,the accumulation of ROS,and increased expression of senescence-related proteins.While abovementioned senescence indicators were significantly alleviated by Que treatment.Que decreased the expression levels of senescence-related proteins(p16,p21,and p53)and senescence-associated secreted phenotype(SASP),including IL-1β,IL-6,and MMP-13,and it increased the expression of SIRT1.In addition,the protective effects of Que on cell senescence were partially reversed by miR-34a-5p overexpression and SIRT1 knockdown.In vivo,X-ray,and histological analyses indicated that Que alleviated IDD in a punctureinduced rat model.CONCLUSION In summary,the present study provides evidence that Que reduces oxidative stress-induced senescence of NPMSCs via the miR-34a/SIRT1 signaling pathway,suggesting that Que may be a potential agent for the treatment of IDD. 展开更多
关键词 QUERCETIN Nucleus pulposus-derived mesenchymal stem cells Oxidative stress SENESCENCE Intervertebral disc degeneration miR-34a-5p/SIRT1 pathway
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miR-141-3p对腰椎间盘突出症大鼠背根神经节炎症及下肢疼痛的抑制和改善作用 被引量:5
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作者 许刚 张长春 +2 位作者 朱坤 叶雨辰 周平辉 《中国组织工程研究》 CAS 北大核心 2024年第16期2593-2598,共6页
背景:研究表明,胰岛素样生长因子1/血小板源性生长因子有抑制纤维环细胞凋亡的作用。miR-141-3p微小RNA在骨髓基质细胞中随着年龄的增加而增加,且与炎症信号通路的活化存在一定关系,提示其可能成为腰椎间盘突出症的治疗靶点。目的:探究m... 背景:研究表明,胰岛素样生长因子1/血小板源性生长因子有抑制纤维环细胞凋亡的作用。miR-141-3p微小RNA在骨髓基质细胞中随着年龄的增加而增加,且与炎症信号通路的活化存在一定关系,提示其可能成为腰椎间盘突出症的治疗靶点。目的:探究miR-141-3p通过调控胰岛素样生长因子1/血小板源性生长因子对腰椎间盘突出症大鼠背根神经节炎症及下肢疼痛的影响。方法:选取50只SPF级SD雄性大鼠,随机分为正常组、模型组、miR-NC组、miR-141-3p inhibitor组、miR-141-3p mimics组,每组10只。除正常组外,其余大鼠采用自体髓核移植法进行腰椎间盘突出症建模。建模成功后,对miR-NC组、miR-141-3p inhibitor组和miR-141-3p mimics组大鼠鞘内分别注射10μL 20μmol/L miR-NC,miR-141-3p inhibitor,miR-141-3p mimics,均每天注射1次,连续注射28 d;正常组、模型组同期同位置注射同体积生理盐水。采用热缩足潜伏期阈值评价大鼠下肢疼痛,实时荧光定量PCR检测背根神经节组织miR-141-3p mRNA表达,ELISA法检测背根神经节组织炎症因子,免疫印迹法检测背根神经节组织胰岛素样生长因子1/血小板源性生长因子蛋白表达,并分析miR-141-3p与胰岛素样生长因子1/血小板源性生长因子的相关性。结果与结论:miR-NC组各项指标与模型组比较,差异均无显著性意义。①大鼠热缩足潜伏期阈值:模型组明显低于正常组(P<0.05),miR-141-3p inhibitor组明显低于miR-NC组(P<0.05),miR-141-3p mimics组明显高于miR-141-3p inhibitor组(P<0.05)。②背根神经节组织miR-141-3p mRNA表达:模型组明显低于正常组(P<0.05),miR-141-3p inhibitor组明显低于miR-NC组(P<0.05),miR-141-3p mimics组明显高于miR-141-3p inhibitor组(P<0.05)。③背根神经节组织肿瘤坏死因子α、白细胞介素1β、白细胞介素1含量:模型组明显高于正常组(P<0.05),miR-141-3p inhibitor组明显高于miR-NC组(P<0.05),miR-141-3p mimics组明显低于miR-141-3p inhibitor组(P<0.05)。④背根神经节组织胰岛素样生长因子1、血小板源性生长因子蛋白表达:模型组明显低于正常组(P<0.05),miR-141-3p inhibitor组明显低于miR-NC组(P<0.05),miR-141-3p mimics组明显高于miR-141-3p inhibitor组(P<0.05)。⑤胰岛素样生长因子1与miR-141-3p呈正相关(r=0.904,P<0.001),血小板源性生长因子与miR-141-3p呈正相关(r=0.879,P<0.001)。⑥结论:miR-141-3p可显著改善腰椎间盘突出症大鼠下肢疼痛,抑制背根神经节炎症,其机制可能与促进胰岛素样生长因子1/血小板源性生长因子表达有关。 展开更多
关键词 miR-141-3p IGF-1/pDGF 腰椎间盘突出症 背根神经节炎症 下肢疼痛
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SLC9A3-AS1调控miR-148a-3p/ROCK1信号轴影响肾癌细胞生物学功能 被引量:1
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作者 向威 吕磊 +2 位作者 郑福鑫 章传华 袁敬东 《华中科技大学学报(医学版)》 CAS CSCD 北大核心 2024年第2期161-167,共7页
目的检测lncRNA SLC9A3-AS1在肾透明细胞癌(clear cell renal cell carcinoma,ccRCC)组织与肾癌细胞中的表达水平,探讨其促进肾癌细胞恶性生物学行为的机制。方法应用GEPIA2在线软件(http://gepia2.cancer-pku.cn/)分析TCGA数据库中SLC9... 目的检测lncRNA SLC9A3-AS1在肾透明细胞癌(clear cell renal cell carcinoma,ccRCC)组织与肾癌细胞中的表达水平,探讨其促进肾癌细胞恶性生物学行为的机制。方法应用GEPIA2在线软件(http://gepia2.cancer-pku.cn/)分析TCGA数据库中SLC9A3-AS1在ccRCC组织中的表达水平;采用实时荧光定量聚合酶链反应(qRT-PCR)检测SLC9A3-AS1在不同肾癌细胞系、24例ccRCC组织与癌旁正常肾脏组织中的表达水平;应用细胞增殖/毒性检测试剂盒(cell counting kit-8,CCK-8)和Transwell小室迁移实验检测敲低SLC9A3-AS1表达对肾癌细胞增殖与迁移的影响;应用蛋白质免疫印迹法检测增殖与迁移相关信号通路蛋白的表达水平;采用双荧光素酶报告基因实验验证SLC9A3-AS1与miR-148a-3p/ROCK1轴的靶向调控关系。结果GEPIA2软件分析结果显示,相较正常肾脏组织,SLC9A3-AS1在肾透明细胞癌组织中表达显著上调(P<0.01)。qRT-PCR结果显示,相较癌旁正常肾脏组织,SLC9A3-AS1在24例ccRCC组织中表达显著上调(P<0.01);相较永生化肾小管上皮细胞,SLC9A3-AS1在4种肾癌细胞系中表达均显著上调,以786-O细胞最为显著(P<0.01)。干扰SLC9A3-AS1表达,可显著抑制786-O细胞的增殖与迁移能力,上调E-cadherin的蛋白表达水平,而下调N-cadherin、MMP2的蛋白表达水平(均P<0.05);过表达miR-148a-3p可显著抑制786-O细胞的增殖与迁移能力(P<0.01)。双荧光素酶报告基因检测结果表明,SLC9A3-AS1可特异性结合miR-148a-3p,后者进一步靶向结合ROCK1 mRNA的3′UTR区域;过表达miR-148a-3p可明显下调ROCK1 mRNA的表达水平,敲低miR-148a-3p表达则产生相反的效应;敲低SLC9A3-AS1表达可显著下调786-O细胞中ROCK1 mRNA与蛋白的表达水平(P<0.01);下调miR-148a-3p表达可部分逆转SLC9A3-AS1沉默对786-O细胞增殖与迁移的抑制作用(P<0.05)。结论SLC9A3-AS1在ccRCC中通过调控miR-148a-3p/ROCK1轴发挥促癌作用,有望成为ccRCC的一个新的分子标志物。 展开更多
关键词 肾透明细胞癌 SLC9A3-AS1 miR-148a-3p ROCK1
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Ginsenoside Rg1 protects against ischemia-induced neuron damage by regulating the rno-miRNA-27a-3p/PPARγaxis
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作者 YUE GUAN TINGTING ZHANG +6 位作者 JIANAN YU JIAWEI LIU WENYUAN LI YUJIA ZHENG JIALE WANG YUE LIU FENGGUO ZHAI 《BIOCELL》 SCIE 2023年第7期1583-1594,共12页
A preliminary miRNA screening showed that expression levels of rno-miRNA-27a-3p were significantly increased in the serum and brain tissues of rats undergoing cerebral ischemia.In recent years,there is evidence of the... A preliminary miRNA screening showed that expression levels of rno-miRNA-27a-3p were significantly increased in the serum and brain tissues of rats undergoing cerebral ischemia.In recent years,there is evidence of the protective capacity of the saponins extracted from panax ginseng and its primary active ingredient ginsenosideRg1oncerebral ischemic injury.Methods:Fetal rat neurons(FRNs)were cultured in glucose-and-serumfree medium and exposed to hypoxia to establish a cerebral ischemia model in vitro(oxygen and glucose deprivation model,OGD).Antioxidant indexes(CAT,SOD),inflammatory markers(MPO,TNF-αand IL-6),and the expression of apoptosis and proliferation associated proteins(NF kB-p65,Caspase 3-cleaved,BCL-2)were examined.Results:Pre-treatment of Rg1(30–100μg/mL)could effectively inhibit the decline of antioxidant indexes(CAT,SOD)and increase in inflammatory markers(MPO,TNF-αand IL-6),and effectively inhibited the apoptosis in FRNs induced by OGD in a gradient-dependent manner.The mechanism analysis showed that the role of Rg1 in protecting against ischemia-induced neuron damage depends on its indirect up-regulation of PPAR protein via suppression of rnomiRNA-27a-3p.Moreover,these effects of Rg1 could be reversed by exogenous rno-miRNA-27a-3p and PPAR gene silencing in FRNs exposed to OGD.Conclusion:To summarize,our study demonstrates that Rg1 could effectively attenuate neuronal damage caused by cerebral ischemia via the rno-miRNA-27a-3p/PPARγpathway.Further,clarification of the novel mechanism will certainly improve our previous understanding of the role of Rg1 and enhancing its level in treatments for alleviating ischemic brain injury. 展开更多
关键词 Ginsenoside Rg1 rno-miRNA-27a-3p ppARΓ Cerebral ischemia NEURON OGD
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黄芩苷对干酵母致热大鼠的解热作用及血清TNF-α、IL-1β、IL-6、PGE_(2)、cAMP和脑组织NF-κB表达的影响 被引量:3
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作者 吴迪 王清 +2 位作者 张殿文 李伟 李响 《中国中医药科技》 CAS 2024年第1期37-41,共5页
目的:观察黄芩苷对干酵母致热大鼠的解热作用并探讨其作用机制。方法:采用背部皮下注射干酵母构建大鼠发热模型,SD雄性大鼠随机分为正常对照,模型组,阳性组(阿司匹林,0.1 g/kg),黄芩苷高、中、低剂量组(160、80、40 mg/kg),连续给药3 d... 目的:观察黄芩苷对干酵母致热大鼠的解热作用并探讨其作用机制。方法:采用背部皮下注射干酵母构建大鼠发热模型,SD雄性大鼠随机分为正常对照,模型组,阳性组(阿司匹林,0.1 g/kg),黄芩苷高、中、低剂量组(160、80、40 mg/kg),连续给药3 d,测定各组大鼠肛温的变化;酶联免疫法(ELISA)检测血清肿瘤坏死因子-α(TNF-α)、白介素-1β(IL-1β)、白细胞介素-6(IL-6)、前列腺素E_(2)(PGE_(2))与环磷酸腺苷(cAMP)水平;Western Blot检测各组大鼠脑组织NF-κB p65(核转录因子-κB p65)蛋白表达。结果:黄芩苷高剂量组有显著解热效果(P<0.01),黄芩苷各剂量组均可不同程度降低大鼠血清TNF-α、IL-1β、IL-6、PGE 2和cAMP含量;与正常组比较,模型组脑组织NF-κB p65蛋白表达增多,黄芩苷高剂量组可明显降低大鼠脑组织NF-κB p65表达(P<0.05)。结论:黄芩苷可显著性降低干酵母引起的体温升高,解热机制可能与抑制TNF-α、IL-1β、IL-6、PGE_(2)与cAMP的分泌和减少脑组织NF-κB p65蛋白表达有关。 展开更多
关键词 黄芩苷 发热 解热作用 TNF-α IL-1β IL-6 pGE_(2) CAMp NF-κB p65 大鼠
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LncRNA GATA3-AS1通过调控miR-362-3p/FABP5轴抑制宫颈癌细胞增殖、迁移及侵袭 被引量:2
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作者 罗健玮 黄泓轲 胡艳丽 《现代肿瘤医学》 CAS 2024年第6期1009-1016,共8页
目的:探究长链非编码RNA GATA3反义RNA 1(lncRNA GATA3-AS1)调控微小RNA-362-3p(miR-362-3p)表达对宫颈癌细胞恶性生物学行为的影响。方法:qRT-PCR检测宫颈癌细胞中lncRNA GATA3-AS1、miR-362-3p、FABP5表达;双荧光素酶报告基因实验验证... 目的:探究长链非编码RNA GATA3反义RNA 1(lncRNA GATA3-AS1)调控微小RNA-362-3p(miR-362-3p)表达对宫颈癌细胞恶性生物学行为的影响。方法:qRT-PCR检测宫颈癌细胞中lncRNA GATA3-AS1、miR-362-3p、FABP5表达;双荧光素酶报告基因实验验证lncRNA GATA3-AS1和miR-362-3p的靶向关系、miR-362-3p和FABP5的靶向关系;将细胞分为pcDNA-NC组、pcDNA-GATA3-AS1组、si-NC组、si-GATA3-AS1组、si-GATA3-AS1+inhibitor-NC组、si-GATA3-AS1+miR-362-3p inhibitor组、miR-NC组、miR-362-3p mimics组、miR-362-3p mimics+pcDNA-NC组、miR-362-3p mimics+pcDNA FABP5组;Western blot检测蛋白表达;EdU法检测细胞增殖;Transwell检测细胞迁移侵袭。结果:在宫颈癌细胞系中,GATA3-AS1、FABP5均为高表达,miR-362-3p均为低表达,选择HeLa细胞进行后续实验;双荧光素酶报告基因实验表明,lncRNA GATA3-AS1和miR-802、miR-362-3p和FABP5具有靶向关系;与pcDNA-NC组比较,pcDNA-GATA3-AS1组Hela细胞EdU阳性率、迁移侵袭及MMP-2、MMP-9表达明显上升(P<0.05);与si-NC组比较,si-GATA3-AS1组HeLa细胞EdU阳性率、迁移侵袭及MMP-2、MMP-9表达明显下降(P<0.05);抑制miR-362-3p表达或过表达FABP5均可以明显逆转沉默GATA3-AS1或过表达miR-362-3p对于HeLa细胞增殖、迁移、侵袭的抑制作用。结论:沉默GATA3-AS1可以靶向上调miR-362-3p表达,抑制FABP5表达,抑制宫颈癌HeLa细胞增殖迁移及侵袭。 展开更多
关键词 长链非编码RNA GATA3反义RNA 1 微小RNA-362-3p 宫颈癌 增殖 转移
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化瘀散水煎剂通过调控miR-129-5p/FOXC1轴抑制肝癌裸鼠移植瘤生长 被引量:1
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作者 许丹 郑超 +2 位作者 余首德 严红梅 黄超群 《现代肿瘤医学》 CAS 2024年第6期1003-1009,共7页
目的:探讨化瘀散水煎剂通过调控微小RNA-129-5p/叉头框蛋白C1(FOXC1)轴对肝癌裸鼠移植瘤生长的影响。方法:建立肝癌裸鼠移植瘤模型,并分为裸鼠NC组、化瘀散水煎剂组、化瘀散水煎剂+inhibitor-NC组、化瘀散水煎剂+miR-129-5p inhibitor组... 目的:探讨化瘀散水煎剂通过调控微小RNA-129-5p/叉头框蛋白C1(FOXC1)轴对肝癌裸鼠移植瘤生长的影响。方法:建立肝癌裸鼠移植瘤模型,并分为裸鼠NC组、化瘀散水煎剂组、化瘀散水煎剂+inhibitor-NC组、化瘀散水煎剂+miR-129-5p inhibitor组,每组8只。qRT-PCR法检测miR-129-5p、FOXC1 mRNA表达水平,双荧光素酶报告基因实验验证miR-129-5p与FOXC1靶向调控关系,观察记录裸鼠的瘤重及移植瘤体积,HE染色观察移植瘤组织形态,TUNEL检测肿瘤组织细胞凋亡,免疫组织化学染色检测瘤组织Ki-67、Cleaved Caspase-3、FOXC1表达,Western blot检测Ki-67、Cleaved Caspase-3、FOXC1蛋白表达。结果:miR-129-5p在肝癌细胞中表达显著下降,FOXC1 mRNA表达显著升高,其中HepG2细胞变化最显著(P<0.05);双荧光素酶报告基因实验表明miR-129-5p与FOXC1存在靶向调控关系;与NC组相比,化瘀散水煎剂组肿瘤细胞出现坏死,凋亡数增加,miR-129-5p、Cleaved Caspase-3显著升高,移植瘤质量和体积、FOXC1、Ki-67表达显著降低(P<0.05);下调miR-129-5p逆转化瘀散水煎剂对肝癌移植瘤的抑制作用(P<0.05)。结论:化瘀散水煎剂可能通过上调miR-129-5p从而下调FOXC1表达,进而抑制肝癌移植瘤生长。 展开更多
关键词 肝癌 化瘀散水煎剂 微小RNA-129-5p 叉头框蛋白C1
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MicroRNA-363-3p inhibits colorectal cancer progression by targeting interferon-induced transmembrane protein 1
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作者 Yun Wang Shao-Kai Bai +1 位作者 Tao Zhang Cheng-Gong Liao 《World Journal of Gastrointestinal Oncology》 SCIE 2023年第9期1556-1566,共11页
BACKGROUND The molecular mechanisms of colorectal cancer development and progression are far from being elucidated.AIM To investigate the role of microRNA-363-3p(miR-363-3p)in the progression of colorectal cancer.METH... BACKGROUND The molecular mechanisms of colorectal cancer development and progression are far from being elucidated.AIM To investigate the role of microRNA-363-3p(miR-363-3p)in the progression of colorectal cancer.METHODS Real-time polymerase chain reaction was performed to detect miRNA expression in human colorectal cancer tissues and paired normal colorectal tissues.PITA 6 was utilized to predict the targets of miR-363-3p.Dual-luciferase reporter system was used to validate the target of miR-363-3p.Plate colony formation assay and wound-healing assay were performed to evaluate cancer cells’clonogenic survival ability and migration ability,respectively.Cell proliferation was examined by cell counting kit-8 assay.Immunohistochemical staining was used to determine the expression level of interferon-induced transmembrane protein 1(IFITM1)in colorectal cancer tissues and adjacent tissues.The TCGA and GTEx databases were used to compare the expression levels of IFITM1 mRNA in colorectal cancer tissues and normal colorectal tissues and analyze the correlation between the expression levels of IFITM1 mRNA and overall survival and disease-free survival of patients.A colorectal cancer cell line with a deficiency of IFITM1 was constructed,and the regulation effect of IFITM1 on the clonogenic growth of colorectal cancer cells was clarified.RESULTS MiR-363-3p was decreased in colorectal cancer tissues compared to normal colorectal tissues.IFITM1 was characterized as a direct target of miR-363-3p.Overexpression of miR-363-3p led to decreased clonogenic survival,proliferation,and migration of colorectal cancer cells,which could be reversed by forced IFITM1 expression.CONCLUSION MiR-363-3p can constrain clonogenic survival,proliferation,and migration of colorectal cancer cells via targeting IFITM1. 展开更多
关键词 MicroRNA-363-3p proliferation Clonogenic survival Colorectal cancer Interferon-induced transmembrane protein 1
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清肾颗粒对大鼠NRK-52E细胞转分化模型miR-23b和PINK1/Parkin通路的影响 被引量:1
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作者 金华 张叶青 +4 位作者 呼琴 张磊 陈诺 韩燕全 王亿平 《中国药理学通报》 CAS CSCD 北大核心 2024年第1期162-170,共9页
目的 探讨TGF-β1诱导大鼠NRK-52E细胞转分化模型中miR-23b对PINK1/Parkin通路的靶向调节机制,并阐明清肾颗粒含药血清对NRK-52E细胞转分化的干预机理。方法 采用超高效液相色谱(UPLC)指纹图谱法对清肾颗粒进行全指纹图谱分析。构建TGF-... 目的 探讨TGF-β1诱导大鼠NRK-52E细胞转分化模型中miR-23b对PINK1/Parkin通路的靶向调节机制,并阐明清肾颗粒含药血清对NRK-52E细胞转分化的干预机理。方法 采用超高效液相色谱(UPLC)指纹图谱法对清肾颗粒进行全指纹图谱分析。构建TGF-β1诱导大鼠NRK-52E细胞转分化模型,转染siRNA后分为模拟物空载对照组、miR-23b-5p模拟物组、抑制剂空载对照组、miR-23b-5p抑制剂组,观察miR-23b-5p对PINK1表达量的影响。再将NRK-52E细胞分组为正常组、TGF-β1组、清肾颗粒组、miR-23b-mimic-NC组、miR-23b-mimic组、miR-23b-mimic+清肾颗粒组,Western blot法检测NRK-52E细胞中Pink1、Parkin、LC3Ⅱ、Beclin-1、P62、α-SMA蛋白表达,RT-qPCR法检测NRK-52E细胞中miR-23b-5p、Pink1、Parkin、Beclin-1、α-SMA mRNA的表达,双荧光素酶报告基因实验检测miR-23b-5p与PINK1的靶向关系。结果 UPLC指纹图谱法鉴定出清肾颗粒中11个活性成分。miR-23b-5p过表达后,PINK1 mRNA表达量也显著增加(P<0.05);而miR-23b-5p表达沉默后,PINK1 mRNA表达量也显著减少(P<0.05)。双荧光素酶报告显示,Rno-miR-23b-5p能显著下调Rno-PINK1-WT荧光素酶活性(P<0.05),但未能下调突变Rno-PINK1-mut荧光素酶活性(P>0.05)。清肾颗粒含药血清干预实验发现,TGF-β1组的miR-23b-5p、Pink1、Parkin、Beclin-1、LC3Ⅱ表达及LC3Ⅱ/Ⅰ比值均明显低于正常组,P62和α-SMA表达明显高于正常组(P<0.05)。清肾颗粒组和miR-23b-mimic组的miR-23b-5p、Pink1、Parkin、Beclin-1、LC3Ⅱ表达及LC3Ⅱ/Ⅰ比值均明显高于TGF-β1组,P62和α-SMA表达明显低于TGF-β1组(P<0.05)。miR-23b-mimic+清肾颗粒组的表现更优于miR-23b-mimic组(P<0.05)。结论 清肾颗粒能够上调NRK-52E细胞内miR-23b-5p表达,并通过增强PINK1/Parkin通路介导的线粒体自噬活性,抑制NRK-52E细胞转分化进程。 展开更多
关键词 miR-23b-5p pINK1/parkin信号通路 线粒体自噬 NRK-52E细胞 清肾颗粒 上皮细胞转分化
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miR-214-5p通过DNMT1介导的AXIN2基因DNA甲基化修饰在皮肤基底细胞癌中的作用机制 被引量:1
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作者 熊斯颖 邵蕾 +2 位作者 杨艳 高爱莉 揭丽云 《新疆医科大学学报》 CAS 2024年第1期27-32,共6页
目的探讨皮肤基底细胞癌中轴抑制蛋白2(Axis inhibition protein 2,AXIN2)基因启动子甲基化对基因转录的影响及miR-214-5p通过靶向DNA甲基转移酶1(DNA methyltransferase1,DNMT1)对AXIN2甲基化率的调控机制。方法收集2022年1月-2023年6... 目的探讨皮肤基底细胞癌中轴抑制蛋白2(Axis inhibition protein 2,AXIN2)基因启动子甲基化对基因转录的影响及miR-214-5p通过靶向DNA甲基转移酶1(DNA methyltransferase1,DNMT1)对AXIN2甲基化率的调控机制。方法收集2022年1月-2023年6月在广州市皮肤病防治所就诊治疗的102例皮肤基底细胞癌(Cutaneous basal cell carcinoma,BCC)患者作为研究对象,提取癌组织和癌旁正常组织标本及基线资料。焦磷酸测序法检测AXIN2基因启动子区甲基化率。实时荧光定量PCR检测AXIN2、DNMT1基因mRNA和miR-214-5p的表达水平。将miR-214-5p模拟物(mimic)、抑制物(inhibitor)及其阴性对照(mimic NC和inhibitor NC)分别对基底细胞癌A431细胞进行转染,48 h后检测DNMT1基因mRNA表达水平和AXIN2基因甲基化率。结果BCC癌组织的AXIN2基因甲基化率显著高于癌旁正常组织(t=5.128,P<0.001),AXIN2基因mRNA相对表达水平显著低于癌旁正常组织(t=7.826,P<0.001),DNMT1基因mRNA表达水平显著高于癌旁正常组织(t=4.838,P<0.001),miR-214-5p表达水平显著低于癌旁正常组织(t=5.426,P<0.001)。BCC癌组织的AXIN2基因甲基化率与其mRNA表达水平呈负相关(r=-0.793,P<0.001),DNMT1基因mRNA水平与AXIN2基因甲基化率呈正相关(r=0.814,P<0.001),miR-214-5p表达水平与DNMT1基因mRNA水平呈负相关(r=-0.747,P<0.001)。双荧光素酶报告基因实验结果证实,DNMT1是miR-214-5p的靶基因。细胞转染后,与mimic NC、inhibitor和inhibitor NC比较,mimic的DNMT1基因mRNA水平、AXIN2基因甲基化率显著降低(P<0.001);而inhibitor的DNMT1基因mRNA水平和AXIN2基因甲基化率相较于其他三组明显上升(P<0.001)。结论miR-214-5p可通过调控下游靶蛋白DNMT1表达,影响AXIN2基因的DNA甲基化率,调控AXIN2基因的表达水平,参与皮肤基底细胞癌的发生机制。 展开更多
关键词 基底细胞癌 miR-214-5p DNA甲基化转移酶1 轴抑制蛋白2 启动子区甲基化
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基于miRNA21-5p调控TGF-β1/Smads信号通路探讨苓桂气化方抗射血分数保留心力衰竭心肌纤维化的机制 被引量:2
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作者 董国菊 石玉姣 +5 位作者 刘春秋 杨晨光 乔文博 刘永成 刘思雨 刘剑刚 《中华中医药学刊》 CAS 北大核心 2024年第4期1-6,I0001-I0005,共11页
目的基于miRNA21-5p调控转化生长因子-β1(transforming growth factor beta 1,TGF-β1)/Smads信号通路探讨苓桂气化方抗射血分数保留心力衰竭(heart failure with preserved ejection fraction,HFpEF)心肌纤维化的机制。方法40只4周龄... 目的基于miRNA21-5p调控转化生长因子-β1(transforming growth factor beta 1,TGF-β1)/Smads信号通路探讨苓桂气化方抗射血分数保留心力衰竭(heart failure with preserved ejection fraction,HFpEF)心肌纤维化的机制。方法40只4周龄自发性高血压大鼠(spontaneously hypertensive rats,SHR)平均分为HFpEF组、沙库巴曲缬沙坦组(LCZ696,0.018 g·kg^(-1))、苓桂气化方低剂量组(LGQH-L,3.87 g·kg^(-1))和苓桂气化方高剂量组(LGQH-H,7.74 g·kg^(-1)),给予高脂、高盐及高糖饮食16周及腹腔注射链脲霉素溶液8周建立HFpEF大鼠模型。10只威斯塔京都(Wistar Kyoto,WKY)大鼠和10只SHR大鼠作为对照组,以普通饲料喂养至实验结束。造模成功后,WKY、SHR和HFpEF组给予等剂量生理盐水,其他3组按照预先规定的干预措施,每天灌胃1次,持续6周。干预结束后,行超声心动图测量左心室(left ventricle,LV)前壁厚度(LV end-diastolic anterior wall thickness,LVAWd)、LV后壁厚度(LV end-diastolic posterior wall thickness,LVPWd)、LV舒张末内径(LV end-diastolic internal diameter,LVIDd)、LV射血分数(LV ejection fraction,LVEF)、LV舒张早期二尖瓣流入峰值速度(E)、舒张晚期二尖瓣流入峰值速度(A)和LV舒张早期二尖瓣环运动速度(e'),并计算E/A和E/e';酶联免疫吸附试验检测血清心房钠尿肽(atrial natriuretic peptide,ANP)、B型利钠肽(B-type brain natriuretic peptide,BNP)及半乳糖凝集素3(Galectin-3,Gal-3);病理切片进行苏木精伊红及马松染色观察心肌肥厚及纤维化,并计算LV室壁厚度(LV wall thickness,LVWT)、胶原体积分数(collagen volume fraction,CVF)及血管周围纤维化比率(perivascular fibrosis ratio,PFR);实时定量聚合酶链反应检测LV心肌miRNA21-5p及TGF-β1/Smads信号通路相关mRNA表达;蛋白印迹检测LV心肌TGF-β1/Smads信号通路相关蛋白表达。结果与对照组比较,HFpEF组的LVAWd、LVPWd、LVIDd、E/A、E/e'、ANP、BNP、Gal-3、LVWT、CVF和PFR显著升高(P<0.05或P<0.01);LV心肌miR-NA21-5,α-SMA、CollⅠ、CollⅢ、TGF-β1、Smad2、Smad3 mRNA表达和α-SMA、CollⅠ、CollⅢ、TGF-β1、P-Smad2/3蛋白表达显著上调(P<0.05或P<0.01);Smad7 mRNA及蛋白表达显著下调(P<0.05或P<0.01)。与HFpEF组比较,苓桂气化方呈剂量依赖性减少LVAWd、LVPWd、LVIDd、E/A、E/e'、ANP、BNP、Gal-3、LVWT、CVF和PFR(P<0.05或P<0.01);下调miRNA21-5p,α-SMA、CollⅠ、CollⅢ、TGF-β1、Smad2、Smad3 mRNA表达和α-SMA、CollⅠ、GF-β1、P-Smad2/3蛋白表达(P<0.05或P<0.01);上调Smad7 mRNA及蛋白表达(P<0.05或P<0.01)。结论苓桂气化方可能通过靶向miRNA21-5p调控TGF-β1/Smads信号通路抑制心肌纤维化,从而减轻HFpEF大鼠LV重塑和舒张功能障碍,是治疗HFpEF的有效中药复方。 展开更多
关键词 miRNA21-5p TGF-β1/Smads信号通路 射血分数保留的心力衰竭 苓桂气化方 心肌纤维化
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心理韧性、父母情感支持与学生主观幸福感间的关系——基于PISA2018中国四省市数据分析 被引量:2
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作者 刘永存 龙越洋 《湖北第二师范学院学报》 2024年第1期62-67,共6页
提升学生的幸福感是实现人的全面发展的必然要求,也是教育事业的重大使命。学生身心等非智力因素的发展在提高教育质量,全面推进素质教育等方面越来越受到重视。基于PISA2018中国四省市12058名中学生的调查数据,发现心理韧性、父母情感... 提升学生的幸福感是实现人的全面发展的必然要求,也是教育事业的重大使命。学生身心等非智力因素的发展在提高教育质量,全面推进素质教育等方面越来越受到重视。基于PISA2018中国四省市12058名中学生的调查数据,发现心理韧性、父母情感支持与学生主观幸福感均呈现正相关性;父母情感支持与心理韧性对学生主观幸福感有显著正向的线性影响,同时父母情感支持通过心理韧性的中介作用影响学生的主观幸福感。由此,提出了在言语鼓励、创造积极性情境、增强亲子互动方面父母应当给予学生情感支持以及从学校、教师与学生自身三个层面提升学生心理韧性的建议。 展开更多
关键词 中学生 主观幸福感 父母情感支持 心理韧性 p1SA2018
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胃癌组织中KAI1/CD82、p27和p53的表达水平及其临床意义
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作者 崔荣花 李建旺 +6 位作者 元建华 张曙波 毛山山 陈琼慧 李兴 张玮芳 谢宗宙 《海南医学》 CAS 2024年第7期978-981,共4页
目的研究胃癌组织中KAI1/CD82、p27、p53蛋白的表达水平及其临床意义。方法收集中南大学湘雅医学院附属海口医院胃肠外科2020年6月至2021年6月期间接受胃癌切除术治疗的43例胃癌患者标本,将标本分为43例胃癌组、43例配对的癌旁组(距癌2 ... 目的研究胃癌组织中KAI1/CD82、p27、p53蛋白的表达水平及其临床意义。方法收集中南大学湘雅医学院附属海口医院胃肠外科2020年6月至2021年6月期间接受胃癌切除术治疗的43例胃癌患者标本,将标本分为43例胃癌组、43例配对的癌旁组(距癌2 cm)和43例配对的正常组(距癌5 cm以上),运用免疫印迹(Western blot)方法检测并比较三组组织中的KAI1/CD82、p27、p53蛋白表达水平,分析胃癌组织中KAI1/CD82、p27、p53的表达水平与临床病理参数的关系,采用Pearson相关分析法分析其与胃癌的临床病理特征的关系。结果胃癌组中的KAI1/CD82、p27、p53蛋白表达水平明显低于癌旁组和正常组,且癌旁组明显低于正常组,差异均有统计学意义(P<0.05);KAI1/CD82、p27、p53蛋白的阳性表达率与肿瘤组织的分化程度、临床分期和淋巴结是否转移有关(P<0.05),而与年龄、性别无关(P>0.05);经Pearson相关分析结果显示,胃癌组织中KAI1/CD82与p27蛋白和p53蛋白的表达均呈正相关(r=0.586、0.426,P<0.05)。结论胃癌组织中的KAI1/CD82、p27、p53蛋白表达水平明显降低,联合检测KAI1/CD82、p27、p53可能成为胃癌诊断及预后评估的新的分子标记物。 展开更多
关键词 胃癌 KAI1/CD82 p27 p53 免疫印迹 诊断 预后
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1p32缺失在初诊多发性骨髓瘤患者中的预后意义
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作者 郭睿 沈旭星 +4 位作者 夏园 金媛媛 李建勇 陈丽娟 仇海荣 《中国实验血液学杂志》 CAS CSCD 北大核心 2024年第3期768-773,共6页
目的:分析1p32缺失在初诊多发性骨髓瘤(MM)患者中的预后意义。方法:回顾性分析2017年4月至2022年12月在江苏省人民医院就诊的341例初诊MM患者的临床资料,结合遗传学特征,尤其是1号染色体遗传学异常中的1p32缺失,分析患者的生存及预后。... 目的:分析1p32缺失在初诊多发性骨髓瘤(MM)患者中的预后意义。方法:回顾性分析2017年4月至2022年12月在江苏省人民医院就诊的341例初诊MM患者的临床资料,结合遗传学特征,尤其是1号染色体遗传学异常中的1p32缺失,分析患者的生存及预后。结果:341例初诊MM患者中,1p32缺失阳性患者占7.0%(24/341),伴有1p32缺失的MM患者的无进展生存(PFS)显著短于不伴有1p32缺失患者(P<0.001),总生存(OS)同样更短(P<0.001)。COX风险回归分析显示,1p32缺失是影响MM患者生存的独立危险因素。同时伴有1q21扩增和1p32缺失,即“1号染色体双打击”MM患者的PFS及OS相较于仅有1q21扩增或仅有1p32缺失MM患者更差(PFS:P<0.001;OS:P<0.001)。结论:1p32缺失是影响MM患者PFS及OS的独立危险因素,1p32缺失应广泛应用于初诊MM的预后判断。 展开更多
关键词 多发性骨髓瘤 1p32缺失 预后
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miR-34c-5p靶向poFUT1对胎盘血管形成的影响
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作者 刘月华 杨照远 +10 位作者 鲁继聪 谢梦霞 郭婧 王媛媛 杨敬敬 田赟 赵明 陈冬笋 朱双慧 李珠银 丁文珺 《郑州大学学报(医学版)》 CAS 北大核心 2024年第3期320-325,共6页
目的:探讨miR-34c-5p与poFUT1的靶向关系及对胎盘血管形成的影响。方法:利用ENCORI数据库预测miR-34c-5p与poFUT1的结合位点,采用双荧光素酶报告实验验证。随机选取2023年4至10月在郑州大学第三附属医院住院的胎儿生长受限(FGR)孕妇20例... 目的:探讨miR-34c-5p与poFUT1的靶向关系及对胎盘血管形成的影响。方法:利用ENCORI数据库预测miR-34c-5p与poFUT1的结合位点,采用双荧光素酶报告实验验证。随机选取2023年4至10月在郑州大学第三附属医院住院的胎儿生长受限(FGR)孕妇20例(FGR组),选择同期正常孕妇20例为对照。采用实时荧光定量PCR法检测两组胎盘组织中miR-34c-5p和poFUT1 mRNA的表达。取脐静脉内皮细胞,分组转染miR-34c-5p模拟物及其对照(NC)、miR-34c-5p抑制物及其NC、si-poFUT1 NC、si-poFUT1、si-poFUT1+miR-34c-5p抑制物,采用CCK-8法、Transwell实验以及成管实验检测细胞转染24、48、72、96 h后的增殖能力,转染48 h后的侵袭能力和成管能力。结果:FGR组和对照组胎盘组织中miR-34c-5p表达水平分别为(1.57±0.39)、(1.09±0.18),poFUT1 mRNA表达水平分别为(0.51±0.17)、(1.06±0.13),FGR组胎盘组织中miR-34c-5p表达水平高于对照组,poFUT1 mRNA表达水平低于对照组(P<0.05)。与miR-34c-5p模拟物NC组比较,模拟物组侵袭细胞数和管腔节点数减少,细胞增殖活性降低(P<0.05)。与miR-34c-5p抑制物NC组比较,抑制物组侵袭细胞数和管腔节点数增加,细胞增殖活性升高(P<0.05)。与si-poFUT1 NC组相比,si-poFUT1组侵袭细胞数和管腔节点数减少,细胞增殖活性降低(P<0.05),而si-poFUT1+miR-34c-5p抑制物组上述变化较si-poFUT1组部分逆转(P<0.05)。结论:miR-34c-5p可能通过调控poFUT1影响血管内皮细胞功能,从而影响胎盘的血管形成,参与FGR的发生。 展开更多
关键词 miR-34c-5p 胎儿生长受限 poFUT1 血管形成
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mdv1-miR-M4-5p对MDCC-MSB1细胞增殖和凋亡的影响
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作者 余祖华 高梦茹 +4 位作者 何雷 魏颖 陈建 陈松彪 丁轲 《畜牧兽医学报》 CAS CSCD 北大核心 2024年第8期3678-3687,共10页
旨在研究马立克病病毒(Marek′s disease virus,MDV)编码的mdv1-miR-M4-5p对MDCC-MSB1细胞增殖和凋亡的影响,将mdv1-miR-M4-5p模拟物、抑制物及其阴性对照转染MDCC-MSB1细胞后48 h,采用实时荧光定量PCR(qRT-PCR)检测细胞中mdv1-miR-M4-5... 旨在研究马立克病病毒(Marek′s disease virus,MDV)编码的mdv1-miR-M4-5p对MDCC-MSB1细胞增殖和凋亡的影响,将mdv1-miR-M4-5p模拟物、抑制物及其阴性对照转染MDCC-MSB1细胞后48 h,采用实时荧光定量PCR(qRT-PCR)检测细胞中mdv1-miR-M4-5p、TGF-β1、Smad2以及caspase-9、caspase-3、cyt-c、cyclinD1、Bcl-2等增殖和凋亡相关分子的转录;CCK-8检测细胞增殖,流式细胞术检测细胞周期和凋亡。结果显示:与对照组相比,mdv1-miR-M4-5p模拟物转染显著上调MDCC-MSB1细胞中mdv1-miR-M4-5p、cyclinD1、Bcl-2的转录水平,下调TGF-β1、Smad2、cyt-c、caspase-9和caspase-3的表达转录,促进细胞的增殖,减少G1期细胞,增加S和G2细胞,降低细胞凋亡率。与对照组相比,mdv1-miR-M4-5p抑制物转染后MDCC-MSB1细胞的增殖、凋亡及其相关分子转录的结果与mdv1-miR-M4-5p模拟物转染后的结果相反。综上,Mdv1-miR-M4-5p可促进MDCC-MSB1细胞增殖,抑制其凋亡,这可能是通过抑制TGF-β1/Smad2信号通路来实现的。 展开更多
关键词 mdv1-miR-M4-5p MDV 增殖 凋亡 TGF-β1/Smad2
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