circ_0015756通过调控miR-515-5p/HMGB3轴影响肺癌细胞增殖、凋亡和迁移

为探讨环状RNA0015756(circ_0015756)对肺癌细胞增殖、凋亡和迁移的影响和潜在机制,该研究采用实时定量PCR(RT-qPCR)分析肺癌组织和癌旁组织中circ_0015756和微小RNA(miR)-515-5p的表达水平.同时,将circ_0015756小干扰RNA(si-circ_0015756)、...     

miR-34a-5p通过靶向醛缩酶A抑制肝癌细胞的增殖和迁移

[目的]证明醛缩酶A(ALDOA)在肝癌细胞的增殖和迁移作用并探索miR-34a-5p靶向调控ALDOA的分子机制,为肝癌治疗提供潜在的分子靶标。[方法]分子生物学技术构建了ALDOA表达质粒,蛋白质印迹(Western Blotting)和实时荧光定量PCR(RT-PCR)检测ALDOA的过表达和敲降效果,CCK-8验证细胞的增殖,划痕实验验证细胞的迁移。[结果]在肝癌细胞中过表达ALDOA能促进肝癌细胞的增殖与迁移(P <0.05),敲降ALDOA后肝癌细胞的增殖与迁移受到抑制(P <0.05),miR-34a-5p是通过靶向结合ALDOA的3’UTR抑制其表达从而抑制肝癌细胞的增殖与迁移(P <0.05)。[结论]miR-34a-5p通过靶向ALDOA抑制肝癌细胞的增殖和迁移。     

miR-125a-5p通过靶向调控GAB2抑制乳腺癌细胞的迁移能力

miR-125a-5p可负性调节GAB2表达,抑制胶质瘤细胞的侵袭和转移。本研究旨在证明miR-125a-5p抑癌作用的普遍性,即miR-125a-5p是否可通过靶向抑制GAB2抑制乳腺癌细胞的迁移。荧光素酶实验结果显示,miR-125a-5p可特异识别GAB2的3′-UTR,抑制报告酶的表达。荧光定量PCR结果揭示,与正常乳腺上皮细胞MCF-10A比较,miR-125a-5p在乳腺癌细胞MDA231和MCF-7中的表达明显降低;与迁移能力相对较低的MCF-7细胞比较,miR-125a-5p在迁移能力较高的MDA231细胞中的表达量更低。Western 印迹结果证明,与空载体（对照）和anti-miR125a 5p转染细胞比较,转染miR-125a-5p明显抑制GAB2蛋白在乳腺癌细胞中的表达。Transwell结果显示,与空载体转染的对照细胞比较,转染miR-125a-5p的乳腺癌细胞穿过基质胶的细胞数明显减少;相反,转染anti-miR125a-5p的细胞穿过基质胶的细胞数却明显增多。上述结果提示,miR-125a-5p在正常的乳腺细胞中高表达,而在乳腺癌细胞中低表达,其表达水平与癌细胞的迁移能力和GAB2表达呈反向关系。本研究结果还提示,miR-125a-5p通过靶向负调控GAB2抑制乳腺癌细胞的迁移能力。总之,本研究证明,miR-125a-5p在肿瘤中发挥抑癌作用。     

miR-374b-5p靶向调控UHMK1对前列腺癌PC-3细胞的影响

[目的]探讨miR-374b-5p调控UHMK1表达对前列腺癌PC-3细胞增殖、迁移及凋亡的作用。[方法]萤光霉素报告检测miR-374b-5p对UHMK1的调控作用,将miR-NC、miR-374b-5p inhibitor和miR-374b-5p mimic转染到前列腺癌PC-3细胞。采用CCK-8法检测细胞存活率,改良的Matrigel Boyden室测定对细胞的侵袭性实施检测,划痕实验对细胞的具体迁移力实施检测,流式细胞术检测细胞凋亡率,RT-qPCR检测miR-374b-5p和UHMK1 mRNA表达,Western Bloting检测UHMK1蛋白表达。[结果]与对照组比较,miR-374b-5p inhibitor组细胞存活率、迁移率、侵袭数、miR-374b-5p表达水平、UHMK1 mRNA表达和蛋白表达水平显著降低,细胞凋亡率显著升高(P<0.05);miR-374b-5p mimic组细胞存活率、迁移率、侵袭数、miR-374b-5p表达水平、UHMK1 mRNA表达和蛋白表达水平显著降低,细胞凋亡率显著降低(P<0.05)。与miR-374b-5p ...     

miR-491-5p靶向调控SHOC2对食管鳞癌细胞增殖、迁移及侵袭的影响

目的探讨miR-491-5p对食管鳞癌细胞增殖、迁移及侵袭的影响及作用机制。 方法培养永生化食管上皮细胞株HET-1A和人食管癌细胞株EC109,EC9706,KYSE510,qRT-PCR检测细胞中miR-491-5p和富含亮氨酸重复蛋白SHOC2 （SHOC2） mRNA水平。EC109细胞分为空白对照组、miR- 491-5p组、miR-NC组、miR-491-5p+pcDNA-SHOC2组和miR-491-5p+pcDNA组,MTT检测细胞增殖,Transwell检测细胞迁移和侵袭,Western Blot法检测CyclinD1、Vimentin、E-cadherin以及MAPK/ERK信号通路相关蛋白水平。双荧光素酶报告基因实验验证miR- 491- 5p与SHOC2之间调控关系。两组间比较采用独立样本t检验,多组间比较采用单因素方差分析,两两比较采用SNK-q检验。 结果食管鳞癌细胞EC109、EC9706和KYSE510中miR-491-5p表达水平低于HET-1A细胞（0.32±0.06、0.62±0.10、0.61±0.08比1.00±0.08）,差异具有统计学意义（F = 106.340,P < 0.001）;SHOC2 mRNA表达水平高于HET- 1A细胞（2.85±0.16、1.73±0.10、1.45±0.06比1.02±0.09）,差异具有统计学意义（F = 464.949,P < 0.001）。miR-491-5p组EC109细胞培养72 h后的OD值、细胞迁移数、侵袭数及CyclinD1、Vimentin、p-MEK和p-ERK蛋白水平均低于miR-NC组（0.70±0.06比1.42±0.08,65.01±10.36比150.01±12.48,70.03±10.26比140.02±11.85,0.30±0.03比0.93±0.16,0.41±0.05比0.86±0.08,0.32±0.06比0.95±0.11,0.40±0.06比0.92±0.13）,差异具有统计学意义（F = 236.565、159.440、120.706、101.071、98.619、130.766、77.046,P均< 0.001）,E-cadherin蛋白水平高于miR-NC组（0.89±0.13比0.48±0.08）,差异具有统计学意义（F = 816.432,P < 0.001）。miR-491-5p在EC109细胞中负调控SHOC2表达,SHOC2过表达逆转了miR-491-5p过表达对EC109细胞增殖、迁移和侵袭及MAPK/ERK信号通路的影响。 结论miR-491-5p可抑制食管鳞癌细胞的增殖、迁移和侵袭,其作用机制可能与下调SHOC2表达抑制MAPK/ERK信号通路活性有关。     

甘草提取物通过调控miR-212-5p/BCL2L2 基因抑制甲状腺肿瘤细胞的增殖、迁移和侵袭

目的探讨甘草提取物GL-1对甲状腺肿瘤细胞增殖、迁移和侵袭的影响及其分子机制。方法以10、20、30 μg/mL GL-1处理甲状腺肿瘤细胞CAL-62,或在CAL-62细胞中转染miR-212-5p mimics、anti-miR-212-5p、si-BCL2L2、pcDNA-BCL2L2。其中转染pcDNA-BCL2L2细胞并以30 μg/mL GL-1处理。噻唑蓝比色法 (MTT)检测CAL-62细胞增殖,Transwell小室法检测CAL-62细胞迁移和侵袭,实时定量PCR (qPCR)检测CAL-62细胞中miR-212-5p表达,Western blot检测相关蛋白Bcl-2样蛋白2 (BCL2L2)、细胞周期蛋白D1 (Cyclin D1)和基质金属蛋白酶-2 (MMP-2)表达。生物学信息预测miR-212-5p的下游靶基因,双荧光素酶基因报告实验进一步验证。数据采用单因素方差分析、Tukey’s事后检验和t检验。结果与对照组相比,10、20、30 μg/mL浓度GL-1降低CAL-62细胞24、48、72 h的细胞活性 (P < 0.05),并呈剂量、时间依赖性。与对照组相比,10、20、30 μg/mL浓度GL-1干预后,CAL-62细胞侵袭数[(143.56±14.22)个、(100.32±10.23)个、(68.23±6.49)个比(189.65±15.23)个]、迁移数[(198.56±14.35)个、(141.35±12.58)个、(89.56±8.95)个比 (295.36±17.56)个]和BCL2L2蛋白表达量 (0.76±0.08、0.51±0.06、0.24±0.02比1.00±0.12)均降低 (P 均< 0.05),而miR-212-5p水平 (1.61±0.11、1.99±0.13、2.28±0.15比1.00±0.07)升高(P < 0.05),并呈剂量依赖性。过表达miR-212-5p和沉默BCL2L2表达在24、48、72 h时CAL-62细胞活性、细胞迁移数、侵袭数和Cyclin D1、MMP-2蛋白表达量降低 (P < 0.05)。生物学信息预测和双荧光素酶基因报告实验证实BCL2L2是miR-212-5p的靶基因。过表达miR-212-5p抑制BCL2L2蛋白水平,沉默miR-212-5p促进BCL2L2蛋白表达 (P < 0.05)。过表达BCL2L2可逆转GL-1对CAL-62细胞增殖、迁移、侵袭及Cyclin D1、MMP-2蛋白表达的抑制作用。结论 GL-1通过miR-212-5p/BCL2L2抑制甲状腺肿瘤细胞的增殖、迁移和侵袭。     

LncRNA CASC9通过调控miR-423-5p/NRSN2轴促进口腔鳞状细胞癌细胞增殖并抑制细胞凋亡

口腔鳞状细胞癌(OSCC)是一种侵袭性强的头颈部恶性肿瘤,严重威胁着人类的身体健康。该研究旨在探讨长链非编码RNA肿瘤易感候选者9(Lnc RNA CASC9)调控mi R-423-5p/neurensin-2(NRSN2)轴对OSCC细胞增殖和凋亡的影响。采用qRT-PCR检测OSCC癌组织及HSC-3、CAL-27、SCC-15细胞中CASC9水平;将SCC-15细胞分为对照组、sh-NC-1组、sh-CASC9组、miR-NC组、miR-423-5p mimics组、anti-miR-NC组、anti-miR-423-5p组、sh-NC组、sh-NRSN2组、shCASC9+anti-miR-NC组、sh-CASC9+anti-miR-423-5p组, qRT-PCR检测CASC9和miR-423-5p表达,CCK-8、流式细胞术、Western blot分别检测细胞增殖、凋亡及NRSN2蛋白表达情况;裸鼠体内移植瘤实验观察CASC9对肿瘤生长的影响; RNA pull down及双荧光素酶报告基因实验检测miR-423-5p与CASC9、NRSN2的靶向关系。结果显示,在OSC...     

circGFRA1靶向miR-642a-5p调控类风湿关节炎滑膜成纤维细胞增殖、迁移和侵袭的机制研究

该研究探讨了circGFRA1对类风湿关节炎(RA)滑膜成纤维细胞(SFs)增殖、迁移和侵袭的影响及其可能机制。收集了39例RA患者的滑膜组织和39例膝关节创伤且无其他关节异常病史患者的滑膜组织(正常滑膜组织),qRT-PCR法检测组织中circGFRA1和miR-642a-5p表达情况。体外分离培养RASFs,分别转染circGFRA1小干扰RNA、miR-642a-5p模拟物,或共转染circGFRA1小干扰RNA与miR-642a-5p抑制剂后,CCK-8法、划痕实验、Transwell小室分别检测细胞增殖、迁移和侵袭;蛋白质印迹法检测细胞中Ki-67、E-cadherin和N-cadherin蛋白表达;双荧光素酶报告基因实验验证circGFRA1和miR-642a-5p的调控关系。结果显示,RA患者滑膜组织中circGFRA1表达水平较正常滑膜组织显著升高(P<0.05),miR-642a-5p较正常滑膜组织显著降低(P<0.05);下调circGFRA1或上调miR-642a-5p后,RASFs细胞D值、划痕愈合率、侵袭数及细胞中Ki-67、N-cadherin蛋...     

LINC00680通过靶向miR-195-5p调控IL-17诱导的肺癌细胞增殖、迁移和侵袭

该文主要讨论LINC00680靶向调控miR-195-5p对IL-17诱导的肺癌细胞增殖、迁移和侵袭的影响。将肺癌细胞H1299分为Control组、IL-17组、IL-17+si-NC组、IL-17+si-LINC00680组、IL-17+si-LINC00680+anti-miR-NC组、IL-17+si-LINC00680+anti-miR-195-5p组。采用qRT-PCR检测LINC00680和miR-195-5p的表达;克隆形成实验、MTT检测细胞增殖情况;Transwell实验检测细胞迁移和侵袭能力;Western blot检测Ki67、E-cadherin、N-cadherin蛋白表达水平;荧光素报告实验验证LINC00680和miR-195-5p靶向关系。与Control组比较,IL-17组LINC00680相对表达量、克隆细胞数、细胞活力、迁移细胞数、侵袭细胞数、Ki67和N-cadherin蛋白合成产物明显增加,E-cadherin蛋白、miR-195-5p相对表达量明显减少。与IL-17+si-NC组比较,IL-17+si-LINC00680组LINC00680...     

miR-181-5p下调人非小细胞肺癌细胞KLF6表达并抑制其增殖、迁移和侵袭

[目的]探讨miR-181-5p下调人非小细胞肺癌细胞KLF6表达并抑制其增殖、迁移和侵袭的作用。[方法]检测30例肺癌和癌旁组织中miR-181-5p和KLF6 mRNA水平,并分析miR-181-5p与NSCLC患者临床病理特征的相关性。用萤光素酶检测miR-181-5p对KLF6的调控作用,将miR-NC、miR-181-5p inhibitor和miR-181-5p mimic转染到A549细胞,采用RT-PCR法检测各组A549细胞中miR-181-5p和KLF6 mRNA表达,同时分别采用MTT法和Transwell法检测各组A549细胞增殖、迁移和侵袭情况。[结果]肺癌组织的miR-181-5p和KLF6 mRNA表达水平均低于癌旁组织(P<0.05);miR-181-5p的表达水平与年龄、性别和是否吸烟不相关(P>0.05);miR-181-5p的表达水平与肿瘤直径、是否转移、TNM分期相关(P<0.05);miR-181-5p与KLF6有潜在的结合位点;转染miR-181-5p mimic可明显增加KLF6-wt的荧光素酶活性,对KLF6-mut没有...     

miR-146a interacting with lncRNA EPB41L4A-AS1 and lncRNA SNHG7 inhibits proliferation of bone marrow-derived mesenchymal stem cells

Emerging evidence suggests that microRNA plays a pivotal role in cell proliferation. Our previous research has certified that miR-146a attenuates osteoarthritis through the regulation of cartilage homeostasis. However, little information about the function of miR-146a in bone marrow-derived mesenchymal stem cells (BMSCs) proliferation and the underlying mechanism was available. Therefore, this study aims at investigating the role of miR-146a on the proliferation of BMSCs and the possible mechanisms involved. The function of miR-146a on BMSCs proliferation was studied through overexpression and knockdown of miR-146a or the indicated long noncoding RNAs (lncRNAs) in BMSCs and then the proliferation rate of the BMSCs were detected by Cell Counting Kit-8 assay, colony formation assay. Besides, flow cytometry was used to test the cell cycle state of BMSCs modified by overexpression or knockdown of miR-146a or lncRNA EPB41L4A-AS1 (EPB41L4A Antisense RNA 1) and small nucleolar RNA host gene 7 (SNHG7). The expression level of marker genes involved in modulating cell proliferation was evaluated by quantitative polymerase chain reaction and western blot analysis. We discovered that the knockdown of miR-146a significantly promoted BMSCs proliferation. Moreover, miR-146a could bind to and inhibit endogenous expression of EPB41L4A-AS1 and SNHG7. Further study demonstrated that overexpression of EPB41L4A-AS1 and SNHG7 significantly enhanced proliferation of BMSCs. For the first time, we certified that miR-146a suppressed BMSCs proliferation, but EPB41L4A-AS1 and SNHG7 promoted BMSCs proliferation in the present study. Mechanistically, miR-146a significantly inhibited BMSCs proliferation partly through miR-146a/EPB41L4A-AS1 SNHG7/cell proliferation signaling pathway axis.     

FERM protein EPB41L5 is a novel member of the mammalian CRB-MPP5 polarity complex

Cell polarity is induced and maintained by separation of the apical and basolateral domains through specialized cell-cell junctions. The Crumbs protein and its binding partners are involved in formation and stabilization of adherens junctions. In this study, we describe a novel component of the mammalian Crumbs complex, the FERM domain protein EPB41L5, which associates with the intracellular domains of all three Crumbs homologs through its FERM domain. Surprisingly, the same FERM domain is involved in binding to the HOOK domain of MPP5/PALS1, a previously identified interactor of Crumbs. Co-expression and co-localization studies suggested that in several epithelial derived tissues Epb4.1l5 interacts with at least one Crumbs homolog, and with Mpp5. Although at early embryonic stages Epb4.1l5 is found at the basolateral membrane compartment, in adult tissues it co-localizes at the apical domain with Crumbs proteins and Mpp5. Overexpression of Epb4.1l5 in polarized MDCK cells affects tightness of cell junctions and results in disorganization of the tight junction markers ZO-1 and PATJ. Our results emphasize the importance of a conserved Crumbs-MPP5-EPB41L5 polarity complex in mammals.     

EPB41L5 controls podocyte extracellular matrix assembly by adhesome-dependent force transmission

1. Download : Download high-res image (255KB)
2. Download : Download full-size image

     

miR-125b慢病毒表达载体的构建及其对卵巢癌SKOV3细胞增殖和迁移的影响

构建并鉴定miR-125b慢病毒过表达载体,研究miR-125b对卵巢癌细胞增殖和迁移的影响及其可能机制。将PcR扩增的rniR-125b前体序列与经过酶切后的GP—SupersilencingVector进行连接,产生miR-125b重组慢病毒表达载体。将重组慢病毒载体质粒、pGag／Pol、pRev和pVSV-G共转染293T细胞,包装产生慢病毒。使用收获的病毒颗粒感染卵巢癌SKOV3细胞,嘌呤霉素筛选稳定感染细胞株;实时荧光定量PCR（Real．timeqPCR）检测miR-125b在SKV03细胞中的表达;Westernblot检测其潜在靶基因HER-2的表达：MTT实验和Transwell侵袭实验分别观察miR-125b过表达后SKOV3细胞增殖和迁移能力的改变。该研究成功构建miR-125b陧病毒过表达载体,感染卵巢癌SKOV3细胞后,能够过表达miR-125b,并抑制SKOV3细胞的增殖及迁移,降低潜在靶基因HER-2的表达。该研究证叽miR-125b能够抑制SKOV3细胞的增殖及迁移,并可能通过降低潜在靶基因HER-2的表达而实现。     

miR-101 Inhibiting Cell Proliferation,Migration and Invasion in Hepatocellular Carcinoma through Downregulating Girdin

miR-101 is considered to play an important role in hepato-cellular carcinoma (HCC), but the underlying molecular mechanism remains to be elucidated. Here, we aimed to confirm whether Girdin is a target gene of miR-101 and determine the tumor suppressor of miR-101 through Girdin pathway. In our previous studies, we firstly found Girdin protein was overexpressed in HCC tissues, and it closely correlated to tumor size, T stage, TNM stage and Edmondson-Steiner stage of HCC patients. After specific small interfering RNA of Girdin was transfected into HepG2 and Huh7.5.1 cells, the proliferation and invasion ability of tumor cells were significantly inhibited. In this study, we further explored the detailed molecular mechanism of Girdin in HCC. Interestingly, we found that miR-101 significantly low-expressed in HCC tissues compared with that in matched normal tissues while Girdin had a relative higher expression, and miR-101 was inversely correlated with Girdin expression. In addition, after miR-101 transfection, the proliferation, migration and invasion abilities of HepG2 cells were weakened. Furthermore, we confirmed that Girdin is a direct target gene of miR-101. Finally we confirmed Talen-mediated Girdin knockout markedly suppressed cell proliferation, migration and invasion in HCC while down-regulation of miR-101 significantly restored the inhibitory effect. Our findings suggested that miR-101/Girdin axis could be a potential application of HCC treatment.     

miRNA-181a在胃癌细胞增殖和迁移中的作用

miRNA与恶性肿瘤患者的诊断和预后密切相关,为了考察miRNA-181a在胃癌细胞增殖和迁移中的作用,本研究检测了miRNA-181a在胃癌组织中的表达,并通过对人胃癌细胞系MGC-803转染miR-181a模拟物或抑制剂来考察miR-181a对细胞迁移和增殖的影响。RT-PCR显示,miRNA-181a在胃癌组织中的表达水平显著高于癌旁组织(p<0.05)。伤口愈合实验和Transwell实验显示,转染miR-181a抑制剂或TGF-β受体2(TGFβR2)过表达的pcDNA3.1质粒均可抑制MGC-803细胞的迁移。EdU实验和CCK-8实验显示,转染miR-181a抑制剂或TGFβR2过表达的pcDNA3.1质粒均可抑制MGC-803细胞的增殖。此外,miR-181a抑制剂处理可使TGFβR2蛋白表达明显升高。然而,miR-181a模拟物或抑制剂处理后TGFβR2mRNA水平没有显著变化。总之,本研究表明高表达的miR-181a通过在转录后抑制TGFβR2蛋白表达来促进胃癌细胞的迁移和增殖。miR-181a有望成为胃癌的潜在治疗靶点。     

构建MicroRNA．29a和microRNA-29c腺病毒并探讨其对膀胱癌细胞增殖能力的影响

构建miRNA．29a／c的重组腺病毒并观察其对膀胱癌T24细胞增殖能力的调控。以人全基因组DNA为模板,PcR扩增miR-29a、miR-29c,克隆至腺病毒穿梭载体pAdtrace．TO4-CMV。重组穿梭载体经pmeI线性化后与腺病毒骨架质粒pAdEasy-1共转化感受态大肠杆菌BJ5183,通过同源重组获得重组腺病毒质粒pAdEasy—1—miR-29a、pAdEasy—1．miR-29c,pacI线性化后转染HEK-293细胞,进行包装和扩增。实时荧光定量PcR检测感染腺病毒的膀胱癌T24细胞miR-29a、miR．29c的表达水平,并利用CCK．8实验检测细胞增殖能力。经DNA测序和限制性内切酶分析显示,重组腺病毒质粒pAdEasy—1—miR．29a、pAdEasy．1-miR-29c构建成功：感染腺病毒Ad—miR-29a和Ad—miR．29c后,经实时荧光定量PCR检测,膀胱癌细胞中miR．29a、miR．29c表达显著增高（P〈0．01）;过表达miR．29a／c后的CCK．8实验显示,细胞增殖能力明显低于对照组伊〈0．05）。以上说明已成功构建miR．29a、miR．29c腺病毒,过表达miR．29a／c可抑制膀胱癌细胞的增殖。     

SIK1作为miR-93新的靶基因抑制前列腺癌细胞增殖、侵袭和迁移

该文探讨了SIK1作为miR-93新的靶基因对前列腺癌细胞增殖、侵袭和迁移的抑制作用.采用重组质粒pcDNA3.1-SIK1上调前列腺癌细胞中SIK1的表达后,利用CCK8和克隆形成实验检测细胞增殖;利用细胞划痕和Transwell实验检测细胞侵袭和迁移;利用West-ern blot检测E-cadherin和Vime...     

miR-335靶向Rho相关卷曲螺旋形成蛋白激酶1对卵巢癌细胞增殖的影响

目的: 探讨miR-335 靶向Rho相关卷曲螺旋形成蛋白激酶1(rho associated coiled-coil forming protein kinase 1,ROCK1)对卵巢癌细胞系SKOV3增殖的调控作用。方法:(1)选取卵巢癌细胞系SKOV3及人正常卵巢上皮细胞系IOSE80,采用RT-PCR检测各组细胞中miR-335表达;采用Western blot检测各组细胞中ROCK1蛋白表达;(2)选取卵巢癌细胞系SKOV3,分别转染miR-335 mimic及mimic control,采用RT-PCR检测细胞中miR-335表达;(3)选取卵巢癌细胞系SKOV3,将SKOV3荧光素酶报告载体与miR-335 mimic共转染,采用荧光素酶活性实验验证miR-335对SKOV3的靶向作用;(4)选取卵巢癌细胞系SKOV3,分为3组,即SKOV3组(转染mimic control)、miR-335 mimic组(转染miR-335 mimic)及miR-335 mimic+ROCK1组(共转染miR-335 mimic+ROCK1),采用MTT法检测各组细胞增殖活性,采用Western blot检测各组细胞中ROCK1蛋白表达,采用RT-PCR检测细胞中Cyclin D1表达。结果: (1)RT-PCR结果显示,卵巢癌细胞SKOV3中miR-335表达显著低于人正常卵巢上皮细胞IOSE80(P < 0.05);Western blot结果显示,卵巢癌细胞SKOV3中ROCK1蛋白表达显著高于人正常卵巢上皮细胞IOSE80(P < 0.05);(2)RT-PCR结果显示,转染miR-335 mimic可使卵巢癌细胞SKOV3中miR-335表达上调,与转染mimic control相比较差异具有统计学意义(P < 0.05);(3)双荧光素酶活性检测结果显示,miR-335 mimic可显著抑制野生型ROCK1-Wt报告载体的荧光素酶活性,但对突变型ROCK1-Mut报告载体的荧光素酶活性并无显著抑制作用;(4)转染miR-335mimic后,卵巢癌细胞SKOV3增殖活性及Cyclin D1表达较阴性对照组显著降低(P < 0.05);而转染miR-335 mimic+ROCK1后,卵巢癌细胞SKOV3增殖活性及Cyclin D1表达较单纯转染miR-335 mimic组显著提高(P < 0.05),但仍显著低于阴性对照组(P < 0.05)。Western blot检测结果显示,转染miR-335mimic后,卵巢癌细胞SKOV3中ROCK1蛋白表达较阴性对照组显著降低(P < 0.05);而转染miR-335 mimic+ROCK1后,ROCK1蛋白表达较单纯转染miR-335mimic组显著增高(P < 0.05),且显著高于阴性对照组(P < 0.05)。结论: miR-335可通过靶向ROCK1抑制卵巢癌细胞系SKOV3增殖。