MicroRNA-338-3p inhibits cell proliferation in hepatocellular carcinoma by target forkhead box P4 (FOXP4)

MicroRNAs (miRNAs) are a class of small, non-coding RNAs, which have demonstrated to important gene regulators, and have critical roles in diverse biological processes including cancer cell proliferation. Previous studies suggested microRNA-338-3p (miR-338-3p) was down-regulated and play tumor suppressor roles in gastric cancer, colorectal carcinoma and lung cancer. However, the role of miR-338-3p in hepatocellular carcinoma (HCC) is still unclear. In this study, we analyzed the expression of miR-338-3p in HCC tissues and HCC cell lines. We find that miR-338-3p was downregulated in HCC tissues and cell lines. Then functional studies demonstrate ectopic miR-338-3p expression significantly suppressed the in vitro proliferation and colony formation of HCC cells and cause to cell cycle arrest. Using bio-informatic method and report assay we identified a novel miR-338-3p target, FOXP4 in HCC cells. Furthermore, knockdown of FOXP4 have the similar effects in HCC corrected with miR-338-3p. These findings suggest that miR-338-3p regulates survival of HCC cells partially through the downregulation of FOXP4. Therefore, targeting with the miR-338-3p/FOXP4 axis might serve as a novel therapeutic application to treat HCC patients.     

Circ_0000218 plays a carcinogenic role in laryngeal cancer through regulating microRNA-139-3p/Smad3 axis

BackgroundLaryngeal squamous cell carcinoma (LSCC) accounts for about 85%–90% of all cases of laryngeal cancer. So far, the role and molecular mechanism of circular RNA 0,000,218 (circ_0000218)/microRNA (miR)-139−3p in laryngeal cancer are not clear. The present study aimed to investigate the role and regulatory mechanism of circ_0000218/miR-139−3p in laryngeal cancerin vitro and in vivo.Methodsquantitative real time polymerase chain reaction (qRT-PCR) was used to detect the expression of circ_0000218/miR-139−3p in LSCC cells. Dual luciferase reporter assay and RNA immunoprecipitation (RIP) assay were used to confirm binding sites between miR-139−3p and smad family member 3 (Smad3), and circ_0000218 and miR-139−3p. Cell Counting Kit-8 (CCK-8) and cell apoptosis analysis were used to detect cell viability and apoptosis. Xenograft experiment was performed to show in vivo effect of circ_0000218/miR-139−3p on the growth of LSCC.ResultsCirc_0000218 was highly expressed in LSCC cells. miR-139−3p, lower expressed in LSCC cells, was negatively regulated by circ_0000218 in LSCC cells. Besides, the findings suggested that circ_0000218 silencing inhibited the LSCC cell viability and promoted apoptosis by negatively regulating miR-139−3p expression. Furthermore, the data indicated that miR-139−3p inhibited the viability of LSCC cells and promoted apoptosis, and these effects were reversed by Smad3 over-expression. In addition, the in vivo effects of circ_0000218/miR-139−3p on LSCC were consistent with the in vitro study.Conclusionscirc_0000218 inhibition inhibited the growth of LSCC by targeting miR-139−3p/Smad3 axis. Our present study provided a new target for laryngeal cancer treatment.     

下调lncRNA DNM3OS通过靶向miR-193a-3p增强人直肠癌细胞系SW-480的放疗敏感性

目的 探讨lncRNA DNM3OS对直肠癌SW-480细胞的增殖、凋亡以及放射敏感性的影响及分子机制.方法 选取30例直肠癌患者癌组织及癌旁组织,RT-qPCR检测DNM3OS和miR-193a-3p的表达水平;将抑制DNM3OS的表达载体、过表达miR-193a-3p载体转染至SW-480细胞,将DNM3OS与抑制...     

人结肠癌细胞系SP细胞microRNA表达谱的初步分析

 目的：探讨结肠癌侧群（SP）细胞在结肠癌多药耐药性中的作用及其microRNA生物标志。方法：结肠癌SP细胞的分选采用流式细胞术,细胞活力的测定采用MTT法,microRNA表达谱的检测采用microRNA芯片,microRNA表达的验证采用实时荧光定量PCR。结果：（1）HCT-15、HT-29及LoVo结肠癌细胞系中SP细胞的比例分别为16.75%、13.02%及9.52%。（2） 化疗药（5-氟尿嘧啶、草酸铂及阿霉素）对3种结肠癌细胞系SP细胞的 IC50均明显高于对非SP细胞的IC50（P<0.05）。（3）microRNA芯片检测表明miR-5000-3p、miR-5009-3p及miR-552在3种结肠癌细胞系的SP细胞中表达均上调,实时荧光定量PCR亦证实此结果。结论：miR-5000-3p、miR-5009-3p及miR-552在结肠癌细胞系的SP细胞中表达上调,有可能成为结肠癌SP细胞的潜在microRNA生物标志。     

miR-338-3p inhibits the proliferation and migration of gastric cancer cells by targeting ADAM17

Background: MicroRNAs (miRNA) have been documented playing a critical role in cancer progression. Although miR-338-3p has been implicated in several cancers, its role in gastric cancer is still unknown. The aim of our study was to investigate the role of miR-338-3p in gastric cancer progression. Methods: Expression levels of miR-338-3p in gastric cancer cell lines and tissues were determined by quantitative real-time PCR (qRT-PCR). The effect of miR-338-3p on proliferation was evaluated by MTT assay, cell migration and invasion were evaluated by transwell migration and invasion assays. Furthermore, luciferase reporter assay was conducted to confirm the target gene of miR-338-3p, and the results were validated in gastric cancer cells. Results: In the present study, we found that miR-338-3p was down-regulated in both gastric cancer cell lines and tissues. Enforced expression of miR-338-3p inhibited proliferation, migration and invasion of gastric cancer cells in vitro. Moreover, we identified A disintegrin and metalloproteinase 17 (ADAM17) gene as potential target of miR-338-3p. Importantly, ADAM17 rescued the miR-338-3p mediated inhibition of cell proliferation, migration and invasion. Conclusions: Our study suggested that miR-338-3p is significantly decreased in gastric cancer, and inhibits cell proliferation, migration and invasion partially via the downregulation of ADAM17. Thus, miR-338-3p may represent a potential therapeutic target for gastric cancer intervention.     

miR-338-3p suppresses invasion of liver cancer cell by targeting smoothened

MicroRNAs are involved in human carcinogenesis and cancer progression. Our previous study has shown that loss of miR-338-3p expression is associated with clinical aggressiveness of hepatocellular carcinoma (HCC). However, the exact roles and mechanisms of miR-338-3p remain unknown in HCC. To determine whether and how miR-338-3p influences liver cancer cell invasion, we studied miR-338-3p in the liver cancer cell lines, and we found that miR-338-3p is down-regulated in treated cells. Forced expression of miR-338-3p in SK-HEP-1 cells suppressed cell migration and invasion, whereas inhibition of miR-338-3p in SMMC-7721 cells induced cell migration and invasion. Furthermore, smoothened (SMO) was identified as a direct target of miR-338-3p. Forced expression of miR-338-3p down-regulated SMO and matrix metalloproteinase (MMP)-9 expression, but inhibition of miR-338-3p up-regulated SMO and MMP9 expression. However, small interfering RNA targeted SMO reversed the effects induced by blockade of miR-338-3p. SMO and MMP9 were overexpressed and associated with invasion and metastasis in HCC tissues. These data indicate that miR-338-3p suppresses cell invasion by targeting the smoothened gene in liver cancer in vitro and miR-338-3p might be a novel potential strategy for liver cancer treatment.     

miR-133-3p对甲状腺癌SW579细胞生物学行为和移植瘤生长的影响

目的 探究miR-133-3p对甲状腺癌SW579细胞和体内移植瘤生长的影响。方法 甲状腺癌SW579细胞分为对照组,miR-NC组,miR-133-3p mimic组,按分组转染miR-NC和miR-133-3p mimic。qRT-PCR检测甲状腺癌组织和癌旁组织及转染后细胞中miR-133-3p的表达,克隆形成;EDU染色检测细胞增殖;流式检测细胞凋亡和线粒体膜电位变化;Western blot检测Survivin,caspase-3蛋白表达;试剂盒检测细胞上清液中SOD和MDA含量。裸鼠皮下注射转染miR-133-3p mimic或miR-NC的SW579细胞,qRT-PCR检测瘤组织中miR-133-3p表达量,记录瘤组织体积,TUNEL检测瘤组织凋亡,免疫组化检测瘤组织中Survivin和caspase-3的表达。结果 甲状腺癌组织中miR-133-3p的表达降低。体外细胞实验结果显示,与对照组相比,miR-133-3p组miR-133-3p表达量增加,细胞克隆形成率、EDU阳性细胞率和Survivin蛋白表达降低,细胞凋亡率和caspase-3的蛋白表达升高,线粒体膜电位...     

Downregulation of circ_0000673 Promotes Cell Proliferation and Migration in Endometriosis via the Mir-616-3p/PTEN Axis

Endometriosis is a common gynecological disease, affecting up to 10% of women of reproductive age and approximately 50% of women with infertility. Circular RNAs (circRNAs) have been shown to be involved in a number of diseases. Dysregulated expression of circRNAs in endometriosis has been reported, and circ_0000673 was significantly downregulated. However, the details of its role in the pathogenesis of endometriosis are still poorly understood. We investigated the location and effects of the downregulation of circ_0000673 in endometriosis. We demonstrated that knockdown of circ_0000673 significantly increased the proliferation and migration of eutopic and normal endometrial cells. Bioinformatics analysis predicted that circ_0000673 might act as a sponge for miR-616-3p. We found that the effect of circ_0000673 knockdown could be recovered by miR-616-3p inhibitor and enhanced by miR-616-3p mimics. qPCR and western blot assays showed that circ_0000673 knockdown could decrease the expression of PTEN and increase the expression of PI3K and p-AKT. PTEN was confirmed to be a target of miR-616-3p. These results demonstrated that the downregulation of circ_0000673 could promote the progression of endometriosis by inactivating PTEN via the deregulation of miR-616-3p.     

miR-496过表达抑制结肠癌细胞生长和转移

目的:研究miR-496过表达对结肠癌细胞生长和转移的影响及其分子机制。方法:运用生物信息学软件筛选miR-496靶向相互作用蛋白;real-time PCR和Western blot法测定结肠癌细胞系HT29、HCT116、SW480以及正常结肠上皮细胞NCM460中miR-496、CTNNB1 mRNA和β-catenin蛋白的表达;运用Lipofectamine 2000将miR-496 mimics转染HT29、HCT116和SW480细胞,分别命名为HT29-miR-496 mimics、HCT116-miR-496 mimics和SW480-miR-496 mimics细胞,转染scramble为阴性对照;运用MTT法、乳酸脱氢酶(LDH)试剂盒法、克隆形成实验和Transwell分别测定细胞活力、LDH漏出率、克隆形成能力和转移能力;萤光素酶报告基因实验测定miR-496启动子活性;Western blot法测定β-catenin、真核细胞翻译起始因子4E结合蛋白1(4E-BP1)、p-4E-BP1、低密度脂蛋白受体相关蛋白6(LRP6)、p-LRP6、MMP-7、MMP-9、MMP-13以及TIMP-2的蛋白水平。结果:miR-496与β-catenin内源性相互作用;miR-496在HT29、HCT116和SW480细胞中低表达,而在NCM460高表达;β-catenin在HT29、HCT116和SW480细胞中高表达,而在NCM460低表达;培养24 h、48 h、72 h、96 h的HT29-miR-496 mimics、HCT116-miR-496 mimics和SW480-miR-496 mimics细胞活力、LDH漏出率、克隆形成率和转移的细胞数均显著低于对照组(P0.05);萤光素酶报告基因实验结果显示转染miR-496 mimics细胞中的miR-496启动子活性明显增加(P0.05),分别是对照组的1.75倍、2.04倍和1.61倍。Western blot实验结果显示miR-496过表达抑制β-catenin蛋白表达,p-4E-BP1和p-LRP6的蛋白水平降低;siRNA或miR-496过表达介导的β-catenin表达下调能显著抑制MMP-7和MMP-9的表达,促进TIMP-2的表达。结论:miR-496在结肠癌细胞中低表达,在正常结肠上皮细胞中高表达;miR-496过表达抑制结肠癌细胞的生长和转移,其机制是通过抑制Wnt/β-catenin通路进一步抑制MMP-7和MMP-9表达,促进TIMP-2表达,从而抑制结肠癌细胞的恶性表型。     

MiR-142-3p functions as a tumor suppressor by targeting CD133, ABCG2, and Lgr5 in colon cancer cells

Studies have shown that the expression of CD133, leucine-rich-repeat-containing G-protein-coupled receptor 5 (Lgr5), and ATP binding cassette (ABC)G2 proteins is associated with malignancy and poor prognosis in colon cancer. However, molecular regulation mechanism of the three proteins has not been elucidated. Here, we report that microRNA-142-3p (miR-142-3p) inhibits the expression of CD133, Lgr5, and ABCG2 in colon cancer cells by binding to both the 3′-untranslated region and the coding sequences of the three genes. The miR-142-3p was markedly decreased in colon cancer specimens, in which it was negatively correlated with the expression of CD133, Lgr5, and ABCG2. Reduction of miR-142-3p corresponds to poor differentiation and bigger tumor size in colon cancers. Moreover, miR-142-3p levels were reduced in cells that formed spheres compared to cells that were cultured in regular media. Transfection of miR-142-3p mimics in colon cancer cells downregulated cyclin D1 expression, induced G₁ phase cell cycle arrest, and elevated the sensitivity of the cells to 5-fluorouracil. Furthermore, OCT4 suppressed miR-142-3p, and hypomethylation of the OCT4 promoter was associated with a reduction in miR-142-3p. Finally, the miR-142-3p inhibited the growth of colon cancer cells in vivo, which was accompanied by the downregulation of CD133, Lgr5, and ABCG2 in tumor tissues. Our results elucidate a novel regulation pathway in colon cancer cells and suggest a potential therapeutic approach for colon cancer therapy.     

WAS-like蛋白在肠癌组织中低表达并抑制人结肠癌细胞的干性

目的 探讨WAS-like蛋白(WASL)在肠癌的表达情况,以及对肠癌细胞干性的影响.方法 运用UALCAN数据库预测WASL蛋白的表达量与肠癌组织中的表达及其与肠癌患者的性别、临床分期、淋巴结转移的关系;组织免疫荧光和细胞免疫荧光染色验证WASL在肠癌组织和细胞中的表达.Western blotting检测人正常结直...     

Circ_0001955 promotes non-small cell lung cancer cell proliferation and invasion by regulating MiR-29a-3p/NKIRAS2 axis to activate the nuclear factor-κB pathway

Non-small cell lung cancer (NSCLC) is one of the most common malignant tumors worldwide. Circular RNAs (circRNAs) have been widely reported to play a role in the pathogenesis of various tumors. Nevertheless, the function of circ_0001955 in NSCLC progression has not been explored yet. This study aims to explore the functions of circ_0001955 in NSCLC and investigate its regulatory molecular mechanism. First, we determined that circ_0001955 was upregulated in NSCLC cells. Subsequently, we demonstrated that knockdown of circ_0001955 restrained cell proliferation and invasion. In vivo experiments further proved the suppressive effect of circ_0001955 silence on tumor growth. Mechanism assays revealed that circ_0001955 enhanced nuclear factor-κB (NF-κB) inhibitor interacting Ras-like protein 2 (NKIRAS2) expression by sponging microRNA-29a-3p (miR-29a-3p). Upregulation of NKIRAS2 led to the deceased level of IκBβ but increased levels of nuclear p65, thus activating the NF-κB signaling pathway. In conclusion, Circ_0001955 activates the NF-κB pathway to promote NSCLC cell proliferation and invasion by regulating miR-29a-3p/NKIRAS2 axis.     

lncRNA CERS6-AS1 通过调控 miR-138-2-3p 抑制人胶质瘤细胞系增殖

目的 探讨 lncRNA CERS6-AS1 对胶质瘤细胞生物学行为的影响及其可能作用机制。 方法 qRT-PCR 法检测胶质瘤组织、 癌旁组织中 CERS6-AS1 和 miR-138-2-3p 的表达量; Pearson 法分析胶质瘤组织中 CERS6-AS1 与 miR-138-2-3p 表达量的相关性; 体外培养人胶质瘤细胞 T98G, 将 si-NC、 si-CERS6-AS1、 miR-NC、 miR-138-2-3p mimics、 si-CERS6-AS1 与 anti-miR-NC、 si-CERS6-AS1 与 anti-miR-138-2-3p 分 别 转 染 至 T98G 细胞; CCK-8 法、 平板克隆形成实验、 Transwell 小室实验分别检测细胞增殖、 克隆形成、 迁移及侵袭 能力; 双荧光素酶报告基因实验检测 CERS6-AS1 和 miR-138-2-3p 的靶向关系。 结果 与癌旁组织比较, 胶 质瘤组织中 CERS6-AS1 的表达量升高 (P< 0. 05), miR-138-2-3p 的表达量降低 (P< 0. 05); CERS6-AS1 与 miR-138-2-3p 呈负相关 (r = - 0. 8899, P< 0. 001); si-CERS6-AS1 组细胞活力、 克隆形成细胞数、 迁移及侵 袭细胞数均低于 si-NC 组 (P< 0. 05); CERS6-AS1 可靶向调节 miR-138-2-3p 的表达; miR-138-2-3p 组细胞活 力、 克隆形成细胞数、 迁移及侵袭细胞数均少于 miR-NC 组 (P< 0. 05); si-CERS6-AS1 + anti-miR-138-2-3p 组细胞活力、 克隆形成细胞数、 迁移及侵袭细胞数均比 si-CERS6-AS1 + anti-miR-NC 组增多 (P< 0. 05)。 结论 干扰 CERS6-AS1 表达可通过调控 miR-138-2-3p 而抑制胶质瘤细胞增殖、 克隆形成、 迁移及侵袭。     

MiR-3653 inhibits the metastasis and epithelial-mesenchymal transition of colon cancer by targeting Zeb2

Aberrant expression of microRNAs (miRNAs) has been widely recognized to play critical roles in the pathogenic processes of colon cancer. However, the expression and functions of miR-3653 in colon cancer remain uncovered. This study revealed for the first time that miR-3653 expression was significantly decreased in colon cancer tissues and cell lines. MiR-3653 overexpression led to decreased migration and invasion of HCT116 cells while miR-3653 knockdown resulted in opposite influence of the metastatic behaviors of HT29 cells. qRT-PCR and western blot demonstrated that miR-3653 suppressed the epithelial-mesenchymal transition (EMT) of colon cancer cells using both gain- and loss- of function assay. Mechanically, miR-3653 was found to interact with the 3′-UTR of Zeb2 through the complementary sequences and inhibited the expression of Zeb2 in colon cancer cells. Rescue experiments demonstrated that the inhibitory effect of miR-3653 overexpression on cell metastasis and EMT was abrogated by forced expression of Zeb2. This study demonstrates that miR-3653 suppresses the metastasis and EMT of colon cells by targeting Zeb2, and serves as a promising biomarker and therapeutic target in colon cancer.     

miR-29a抑制前列腺癌细胞恶性表型的分子机制

目的:探讨微小RNA-29a(miR-29a)在前列腺癌细胞中的生物学功能及miR-29a过表达抑制前列腺癌细胞恶性表型的分子机制。方法:运用基因芯片和生物信息学技术检测并分析miR-29a在前列腺癌组织及癌旁组织中的表达;real-time PCR检测前列腺癌组织、癌旁组织、4种前列腺癌细胞(PC3、DU145、LNCa P和Ar Ca P)及正常前列腺细胞(RWPE-1)中miR-29a和赖氨酸(K)特异性去甲基化酶4B(KDM4B)mRNA的表达水平;采用瞬时转染法将p Genesil-1-miR-29a质粒转染上述4种前列腺癌细胞,MTT法、集落形成实验、Annexin V-FITC/PI及流式细胞术分别检测细胞活力、集落形成率和细胞凋亡率;Western blot检测KDM4B的蛋白表达。结果:基因芯片和生物信息学结果显示,miR-29a在前列腺癌组织和癌旁组织中存在差异表达;real-time PCR结果显示,分别与癌旁组织和RWPE-1细胞比较,miR-29a在前列腺癌组织和4种前列腺癌细胞中的表达水平均显著降低,而KDM4B的mRNA水平显著增高(P0.05)。与阴性对照(p Genesil-1)组比较,miR-29a过表达显著抑制4种前列腺癌细胞活力和集落形成,细胞凋亡率显著增加(P0.05);Western blot结果显示,与p Genesil-1组比较,miR-29a过表达显著抑制KDM4B的蛋白表达。上调KDM4B的表达后,细胞活力明显升高,细胞凋亡率显著降低(P0.05)。结论:miR-29a在前列腺癌组织和细胞中低表达,miR-29a过表达抑制前列腺癌细胞生长,诱导细胞凋亡,其机制可能与抑制KDM4B的表达有关。     

circ_ 0061140 靶向 miR-6838-5p 促进非小细胞肺癌细胞的增殖、 阻滞细胞周期、 诱导细胞凋亡

目的 通过实验研究确认环状 RNA (circRNA) circ_ 0061140 是否能靶向 miR-6838-5p 调控非小 细胞肺癌细胞的增殖、 细胞周期和凋亡。 方法 采用逆转录-定量聚合酶链反应 (RT-qPCR) 检测 circ_ 0061140 和 miR-6838-5p 在非小细胞肺癌细胞中的表达情况。 将非小细胞肺癌 NCI-H1299 细胞分为 si-circ_ 0061140 组 (转染 si-circ_ 0061140; 低表达 circ_ 0061140)、 si-NC 组 (转染 si-NC; 阴性对照)、 NC 组 (未 转染; 空白对照)、 miR-6838-5p 组 (转染 miR-6838-5p 模拟物; 高表达 miR-6838-5p)、 miR-NC 组 (转染 miR-NC; 高表达 miR-6838-5p 的阴性对照)、 si-circ_ 0061140 + anti-miR-NC 组 (共转染 si-circ_ 0061140 与 anti-miR-NC)、 si-circ_ 0061140 + anti-miR-6838-5p 组 (共转染 si-circ_ 0061140 与 anti-miR-6838-5p)。 采用 Western 印迹检测细胞周期蛋白 D1 ( cyclinD1)、 活化的含半胱氨酸的天冬氨酸蛋白水解酶-3 ( cleaved caspase-3) 蛋白表达, MTT 法检测细胞增殖能力, 流式细胞仪检测细胞周期和凋亡情况。 双荧光素酶活性 检测 circ_ 0061140 和 miR-6838-5p 的靶向结合。 结果 非小细胞肺癌组织、 细胞 NCI-H1299、 NCI-H2170、 NCI-H1975 中的 circ_ 0061140 表达量均比癌旁组织或正常肺上皮细胞 BEAS-2B 高, miR-6838-5p 表达量比 癌旁组织或 BEAS-2B 细胞低 (P均 < 0. 05)。 si-circ_ 0061140 组或 miR-6838-5p 组 NCI-H1299 细胞的 CyclinD1 蛋白表达量、 增殖能力、 S 期细胞比例比 NC 组减少, Cleaved-caspase-3 蛋白表达量、 G0 / G1期细胞比 例、 凋亡率比 si-NC 组或 miR-NC 组增加 (P均 < 0. 05)。 circ_ 0061140 靶向调控 miR-6838-5p 的表达。 共转 染 si-circ_ 0061140、 anti-miR-6838-5p 可减弱转染 si-circ_ 0061140 对细胞生物学行为的作用。 结论 低表达 circ_ 0061140 通过靶向非小细胞肺癌细胞的 miR-6838-5p, 抑制细胞增殖、 阻滞 G0 / G1期细胞周期, 并加速 凋亡。     

circ0000231在非小细胞肺癌中的表达及功能研究

目的:探讨环状RNA_0000231(circ_0000231)在非小细胞肺癌(NSCLC)中的表达及功能。方法:应用RT-qPCR检测circ_0000231在NSCLC组织和细胞系中的表达,将circ_0000231的小干扰RNA(si-circ_0000231)和阴性对照siRNA(NC)分别转染NSCLC细胞,采用CCK-8法、集落形成实验和流式细胞术检测2组细胞的增殖和凋亡情况,并用RT-qPCR和Western blot检测细胞周期蛋白D1(CCND1)和抗凋亡蛋白Bcl-2的表达。结果:分别与癌旁组织和人正常支气管上皮BEAS-2B细胞相比,circ_0000231在NSCLC组织和细胞系中的表达均显著上调(P<0.05)。与NC组相比,si-circ_0000231组的NSCLC细胞活力和集落形成数显著降低,凋亡率显著增加(P<0.05)。此外,RT-qPCR和Western blot检测结果显示转染si-circ_0000231能够抑制NSCLC细胞CCND1和Bcl-2的表达(P<0.01)。结论:circ_0000231在NSCLC组织和细胞中的表达显著升高,敲减circ_0000231的表达能显著抑制NSCLC细胞的增殖。     

miR-24-3p靶向KLF6基因调控IL-6/STAT3信号通路影响食管癌细胞的活力和凋亡

目的:探讨微小RNA-24-3p(miR-24-3p)对食管癌细胞活力和凋亡的影响及机制。方法:以人正常食管上皮细胞HEEC为对照,采用RT-qPCR检测食管癌细胞TE11、Eca109和EC9706中miR-24-3p和KLF6 mRNA的表达,Western blot检测KLF6蛋白的表达。用anti-miR-24-3p和KLF6 siRNA转染EC9706细胞,MTT检测细胞活力,流式细胞术检测细胞凋亡率,Western blot检测检测细胞中与增殖、凋亡相关的蛋白以及IL-6/STAT3信号通路相关蛋白的表达,ELISA法检测IL-6的表达。双萤光素酶报告基因实验验证miR-24-3p与KLF6靶向调控的关系。结果:食管癌癌细胞TE11、Eca109和EC9706中miR-24-3p表达上调(P<0.05),KLF6的mRNA和蛋白表达下调(P<0.05)。敲减EC9706细胞miR-24-3p表达可抑制其细胞活力,诱导其凋亡,并抑制细胞CDK4、cyclin D1、CDC25A、p-STAT3、IL-6及Bcl-2的表达,促进caspase-3和Bax的表达。结论:miR-24-3p可靶向KLF6基因调控IL-6/STAT3信号通路影响食管癌细胞的生长和凋亡。