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。     

circNEIL3靶向miR-218-5p对口腔鳞状细胞癌细胞增殖、凋亡、迁移、侵袭的影响

该文旨在探讨circNEIL3对口腔鳞癌细胞生物学行为的影响及其可能的作用机制。采用qRT-PCR法检测口腔鳞癌组织、癌旁组织、人口腔鳞癌细胞(CAL-27、SCC-25、SCC-9、HSC-3)以及正常口腔角质细胞HOK中circNEIL3、miR-218-5p的表达量;以CAL-27细胞为研究对象,si-circNEIL3、miR-218-5p mimics、si-NC、miR-NC分别转染至CAL-27细胞, si-circNEIL3和antimiR-NC、si-circNEIL3和anti-miR-218-5p分别共转染至CAL-27细胞; MTT法检测CAL-27细胞增殖情况;流式细胞术检测CAL-27细胞凋亡情况; Transwell检测CAL-27细胞侵袭和迁移情况。双荧光素酶报告实验检测circNEIL3与miR-218-5p的靶向关系; Western blot检测Bax、Bcl-2、caspase-3、cleaved-caspase-3蛋白表达量。与癌旁组织相比,口腔鳞癌组织中circNEIL3的表达量升高(P<0.01),miR-218-5p的表达量降低(P...     

LncRNA MALAT1调控miR-383-5p对神经母细胞瘤细胞增殖、迁移和侵袭的影响

该文旨在探讨长链非编码RNA(lnc RNA)肺腺癌转移相关转录本1(MALAT1)对神经母细胞瘤(neuroblastoma, NB)细胞增殖、迁移和侵袭的影响及作用机制。选取2019年1月至2021年12月在凉山彝族自治州第一人民医院接受治疗的45例NB患者的NB组织和相邻的非癌组织,利用q RTPCR检测NB组织和相邻的非癌组织、人脐静脉内皮细胞HUVECs和神经母细胞瘤癌细胞系NMB、SHEP21N、SHEP2中MALAT1和miR-383-5p的表达水平。选择SHEP2为研究对象,将其随机分为si-NC组、si-MALAT1组、pc-NC组、pc-MALAT1组、mi R-NC组、mi R-383-5p过表达组(OE-mi R-383-5p组)、anti-NC组、anti-mi R-383-5p组、si-MALAT1+anti-NC组和si-MALAT1+anti-mi R-383-5p组; CCK-8法检测各组SHEP2细胞的增殖水平; Western blot实验检测各组SHEP2细胞中Cyclin D1、PCNA、MMP-2和MMP-9的蛋白表达水平; Transwel...     

miR-490-3p通过靶向调控TGFBR1抑制非小细胞肺癌细胞的增殖和侵袭

目的:以非小细胞肺癌A549细胞为模型,探讨miR-490-3p在肺癌发生发展过程中的作用及其调控机制。方法:通过miRBase数据库获得miR-490-3p序列,设计miR-490-3pmimics并转染A549细胞,CCK8、细胞划痕及Transwell实验分别检测miR-490-3p过表达对A549细胞增殖、迁移和侵袭能力的影响;使用miRwalk在线工具预测miR-490-3p可能的调控基因,通过实时荧光定量PCR及Western印迹对候选调控基因进行筛选,最后通过双萤光素酶报告基因实验验证miR-490-3p与调控基因之间的靶向关系。结果:过表达miR-490-3p可显著抑制A549细胞的增殖、侵袭和迁移能力;在预测的miR-490-3p候选靶基因中,选择与细胞增殖、迁移等表型相关的RASAL2、TGFBR1、PAPPA、HMGA2、TGFA靶基因进行实时荧光定量PCR及Western印迹筛选,结果仅TGFBR1基因在mRNA和蛋白水平的表达与miR-490-3p水平呈负相关,且双萤光素酶报告实验证实miR-490-3p可直接与TGFBR1的3'-UTR结合并抑制其表达。结论:miR-490-3p通过靶向调控TGFBR1的表达抑制非小细胞肺癌A549细胞的增殖和侵袭。     

lncRNA MAGI2-AS3下调miR-31-5p抑制肺腺癌细胞的增殖、迁移、侵袭并促进凋亡

目的研究lncRNA MAGI2-AS3对肺癌A549细胞增殖、迁移、侵袭和凋亡的影响和潜在的分子机制。方法根据转染载体不同将A549细胞分为pcDNA3.1组(转染pcDNA3.1)、pcDNA3.1-MAGI2-AS3组(转染pcDNA3.1-MAGI2-AS3)、anti-miR-NC组(转染anti-miR-NC)、anti-miR-31-5p组(转染anti-miR-31-5p)、pcDNA3.1-MAGI2-AS3+miR-NC组(共转染pcDNA3.1-MAGI2-AS3和miR-NC)、pcDNA3.1-MAGI2-AS3+miR-31-5p组(共转染pcDNA3.1-MAGI2-AS3和miR-31-5p mimics)。实时荧光定量PCR(qRT-PCR)检测miR-31-5p和MAGI2-AS3 RNA的表达,四氮唑蓝(MTT)法测定A549细胞增殖活性,Transwell实验检测细胞迁移和侵袭能力,双荧光素酶报告系统验证MAGI2-AS3与miR-31-5p的调控关系,流式细胞术检测细胞凋亡与周期。两组间比较采用独立样本t检验进行分析;多组间比较采用单因素方差分析,组内多重比较采用SNK-q检验。结果与人正常肺细胞HBE相比,肺癌细胞A549中的MAGI2-AS3表达量(0.48±0.03比1.29±0.06)降低,miR-31-5p表达量(1.01±0.05比0.25±0.02)升高;与pcDNA3.1组比较,pcDNA3.1-MAGI2-AS3组A549细胞活力(0.48±0.04比0.77±0.06)、迁移[(81.33±2.87)个比(124.33±3.09)个]和侵袭[(32.00±2.83)个比(53.00±3.27)个]细胞数、S期细胞所占比例(23.01﹪±1.00﹪比32.95﹪±1.06﹪)均降低,凋亡率(19.95﹪±1.25﹪比7.23﹪±0.51﹪)、G0-G1期细胞所占比例(43.58﹪±2.15﹪比33.56﹪±1.23﹪)均升高;与anti-miR-NC组比较,anti-miR-31-5p组A549细胞活力(0.53±0.04比0.78±0.06)、迁移[(76.00±3.74)个比(108.33±2.87)个]和侵袭[(30.00±1.63)个比(42.33±2.05)个]细胞数、S期细胞所占比例(24.43﹪±1.13﹪比32.91﹪±1.08﹪)降低,凋亡率(18.21﹪±1.24﹪比7.29﹪±0.51﹪)、G0-G1期细胞所占比例(41.56﹪±2.19﹪比33.53﹪±1.27﹪)升高,差异有统计学意义(P均<0.05);双荧光素酶报告系统结果显示,MAGI2-AS3靶向负调控miR-31-5p的表达。与pcDNA3.1-MAGI2-AS3+miR-NC组比较,pcDNA3.1-MAGI2-AS3+miR-31-5p组A549细胞活力(0.68±0.06比0.50±0.04)、迁移[(91.00±1.63)个比(52.67±2.62)个]和侵袭[(62.67±2.49)个比(31.67±4.03个)]细胞数升高,凋亡率(10.59﹪±1.0﹪比21.11﹪±1.14﹪)降低,差异有统计学意义(P均<0.05)。结论lncRNA MAGI2-AS3通过靶向miR-31-5p抑制A549细胞的增殖、迁移和侵袭,促进细胞凋亡。lncRNA MAGI2-AS3是肺癌潜在分子治疗靶点。     

miR-98-5p靶向PYGO2基因对宫颈癌细胞增殖、迁移和侵袭的影响及其作用机制研究

目的探讨miR-98-5p对宫颈癌细胞增殖、迁移和侵袭的影响以及其作用机制。 方法选取2016年1月至2019年1月郴州市第一人民医院收治的宫颈癌患者的癌组织和癌旁组织;予以miR-98-5p、si-PYGO2及anti-miR-98-5p单独或共培养Siha细胞,记为：miR-NC组、miR-98-5p组、si-NC组、si-PYGO2组、anti-miR-NC组、anti-miR-98-5p组、miR-98-5p+pcDNA组、miR-98-5p+pcDNA-PYGO2组。运用qRT-PCR检测宫颈癌组织和细胞中miR-98-5p和PYGO2 mRNA的表达水平;Western blot检测蛋白表达;MTT法检测细胞增殖活性;Transwell检测细胞迁移和侵袭;将WT-PYGO2、MUT-PYGO2分别与miR-NC、miR-98-5p共转染至Siha细胞中,双荧光素酶报告基因检测实验检测荧光活性。采用方差分析和t检验进行统计学分析。 结果与癌旁组织相比,宫颈癌组织中miR-98-5p表达水平降低（0.98±0.08比0.47±0.05）,PYGO2 mRNA （1.00±0.07比2.43±0.24）和蛋白表达水平（0.27±0.03比0.62±0.05）均升高（P均< 0.001）。与正常宫颈细胞Ect1/E6E7相比,宫颈癌细胞Siha、Hela、Caski中PYGO2 mRNA （0.98±0.09比2.76±0.23、2.46±0.24、2.55±0.21）和蛋白表达水平（0.21±0.03比0.62±0.06、0.51±0.05、0.57±0.06）升高;miR-98-5p的表达水平降低（1.00±0.08比0.34±0.04、0.56±0.05、0.46±0.04） （P均< 0.05）。与miR-NC组相比,miR-98-5p组宫颈癌Siha细胞活性（48 h：0.61±0.05比0.42±0.04,72 h：1.02±0.09比0.59±0.06）、迁移数量[ （112.46±10.27）个比（48.35±4.96）个]及侵袭数量[ （92.47±9.56）个比（39.46±3.52）个]均降低（P均< 0.05）。与si-NC组相比,si-PYGO2组宫颈癌Siha细胞活性（48 h：0.64±0.06比0.46±0.05,72 h：1.05±0.08比0.67±0.06）、Siha迁移数量[ （106.48±9.75）个比（42.16±4.25）个]和侵袭数量[ （87.63±8.11）个比（35.42±6.20）个]均降低（P均< 0.05）;Cyclin D1、MMP-2、MMP-9、MMP-14表达水平降低,p21、p27表达水平升高,差异有统计学意义（P均< 0.05）。与miR-NC组比较,miR-98-5p组转染WT-PYGO2的Siha细胞荧光素酶活性（0.38±0.04比0.99±0.08）降低（P < 0.05）,转染MUT-PYGO2的Siha细胞荧光素酶活性（1.03±0.08比1.01±0.09）差异无统计学意义（P > 0.05）。PYGO2过表达逆转了miR-98-5p过表达对宫颈癌Siha细胞的增殖、迁移和侵袭的抑制作用。 结论miR-98-5p可抑制宫颈癌细胞增殖、迁移和侵袭,其机制可能与其靶向调控PYGO2的表达有关,将可为宫颈癌的预防和治疗提供新靶点。     

LncRNA SPINT1-AS1通过靶向miR-433-3p调控非小细胞肺癌细胞的增殖、凋亡、迁移和侵袭

该研究主要探讨lncRNA SPINT1-AS1对非小细胞肺癌(NSCLC)细胞H1299增殖、迁移、侵袭和凋亡的影响及其分子机制。选取新疆医科大学附属肿瘤医院2017年3月至2019年3月的30例NSCLC组织及匹配的癌旁组织;体外培养人正常肺上皮细胞BEAS-2B和NSCLC细胞系H1299、Calu-3、Calu-6,将H1299细胞分为NC组、si-NC组、si-SPINT1-AS1组、miR-NC组、miR-433-3p组、si-SPINT1-AS1+anti-miR-NC组、si-SPINT1-AS1+anti-miR-433-3p组。RT-qPCR检测NSCLC组织和细胞中lncRNA SPINT1-AS1和miR-433-3p的表达水平;MTT检测细胞增殖情况;Transwell检测细胞的迁移和侵袭;流式细胞仪检测细胞凋亡;Western blot检测相关蛋白的表达;双荧光素酶报告基因实验检测lncRNA SPINT1-AS1和miR-433-3p的靶向关系。结果表明与癌旁组织和人正常肺上皮细胞BEAS-2B相比,NSCLC组织和细胞系中lncRNA SPINT1-AS...     

Hsa-miR-5195-3p对人宫颈癌细胞SiHa增殖、迁移与侵袭的影响

目的:探讨mi R-5195-3p对人宫颈癌细胞系Si Ha增殖、迁移与侵袭的影响。方法:采用qRT-PCR检测人宫颈癌细胞SiHa和正常上皮细胞HaCaT中mi R-5195-3p的表达水平。将mi R-5195-3p mimic转染至Si Ha细胞中构建外源性过表达细胞株,阴性对照组中则转染NC mimic,并用q RT-PCR验证转染效率;通过MTT和集落形成实验检测细胞增殖能力;划痕愈合实验检测细胞横向迁移能力; Transwell小室实验检测细胞纵向迁移能力和侵袭能力;采用qRT-PCR和Western blot检测E-cadherin、Vimentin与snail m RNA转录水平及蛋白表达水平。结果:宫颈癌细胞Si Ha中的mi R-5195-3p表达水平较HaCaT偏低(P 0. 05)。与阴性对照组相比,转染mi R-5195-3p mimic的SiHa细胞中mi R-5195-3p水平显著增高(P 0. 01);并且其体外增殖(P 0. 001),迁移(P 0. 001)与侵袭能力(P 0. 001)明显减弱;同时E-cadherin表达水平上调而Vimentin、snail表达水平下调。结论:过表达mi R-5195-3p可能通过阻碍EMT通路抑制宫颈癌细胞Si Ha的增殖,迁移与侵袭。     

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...     

LncRNA UNC5B-AS1对肺癌细胞黏附、侵袭及迁移的影响及其机制

目的:探讨长链非编码RNA(lncRNA) UNC5B-AS1调控miR-218-5p的表达影响肺癌细胞黏附、侵袭和迁移及其作用机制。方法:选取2017年6月至2019年6月在重庆三峡中心医院肿瘤科经手术切除的20例肺癌患者癌组织和对应癌旁组织标本,采用实时荧光定量PCR(qRT-PCR)检测肺癌组织和癌旁组织及其支气管上皮细胞HBE和不同肺癌细胞A549、H1437、H1975、H1299和H460中UNC5B-AS1的表达。将UNC5B-AS1 siRNA转染至肺癌A549细胞,采用黏附实验、Transwell侵袭实验及划痕实验检测下调UNC5B-AS1对A549细胞黏附、侵袭和迁移能力的影响; qRT-PCR和双荧光素酶报告基因检测实验鉴定UNC5B-AS1对miR-218-5p的靶向调控关系; Western blot检测上皮间质转化(EMT)相关蛋白表达情况。结果:肺癌组织和细胞中UNC5B-AS1表达显著高于癌旁组织和支气管上皮细胞(P<0.05),UNC5B-AS1在肺癌A549细胞中的表达量最高(P<0.05)。下调UNC5B-AS1的表达能够抑制A549细...     

Silencing LINC00504 inhibits cell proliferation,invasion as well as migration and promotes cell apoptosis in lung cancer cells via upregulating miR-876-3p

LINC00504 acts as an oncogene and associates with unfavorable prognosis in patients with lung cancer. Silencing LINC00504 may be a promising strategy for treatment of lung cancer and its effects were firstly investigated in lung cancer cells this study. The gene expression level of miR-876-3p as well as LINC00504 were measured via PCR assay. The cell proliferation was investigated through Cell Counting Kit-8 (CCK-8) assay and colony formation assay. Flow cytometry was applied for detection of cell apoptosis. Wound healing and transwell assay were performed for measurement of cell migration and invasion respectively. The apoptosis related protein expressions were measured by western blot. Luciferase report assay was conducted for verification the target gene. LINC00504 was higher expressed in five types of lung cancer cells studied herein when compared with the control normal cells. LINC00504 knockdown exerted inhibitory effects on cell apoptosis, cell migration as well as cell invasion and promoted cell apoptosis. All the effects mentioned above were counteracted by miR-876-3p inhibitor. Silencing LINC00504 possessed anti-proliferation, repression of cell invasion as well as migration and pro-apoptosis effects via targeting up-regulation of miR-876-3p in lung cancer cells, proving the new therapeutic targets and highlighting the potential application in future diagnosis and treatment in lung cancer.     

Long intergenic noncoding RNA 00641 inhibits breast cancer cell proliferation,migration, and invasion by sponging miR-194-5p

Long noncoding RNAs have an essential role in the tumorigenesis of breast cancer (BC). Nonetheless, the consequences of long intergenic noncoding RNA 00641 (LINC00641) in BC remain unidentified. This study shows that LINC00641 expression level was decreased in BC tissues. LINC00641 expression level was negatively related to tumor size, lymph-node metastasis, as well as clinical stage. LINC00641 overexpression inhibited cell proliferation, migration, and invasion but stimulated apoptosis in BC cells. LINC00641 overexpression also remarkably reduced BC growth and metastasis in vivo. LINC00641 acts as a competitive endogenous RNA to sponge miR-194-5p. miR-194-5p level was higher in BC tissues and cells compared with normal-adjacent tissues and normal breast epithelial cell. miR-194-5p expression was negatively correlated with LINC00641 expression in BC tissues. miR-194-5p overexpression reversed the effects of LINC00641 on cell proliferation, cycle, apoptosis, migration, as well as invasion. In conclusion, LINC00641 inhibits BC cell proliferation, migration, as well as invasion by sponging miR-194-5p.     

miR-224-5p inhibits proliferation,migration, and invasion by targeting PIK3R3/AKT3 in uveal melanoma

Uveal melanoma (UM) is the most common primary intraocular malignancy in adults. Accumulating investigations have identified the aberrant expression of miRNAs (microRNAs) in UM, such as miR-181, miR-20a, miR-144, miR-146a. The purpose of this study is to investigate the biological function of miR-224-5p in UM. The expression of miR-224-5p, PIK3R3, and AKT3 in 30 tumor tissues and paired adjacent noncancerous tissues were analyzed using Western blot analysis and quantitative real-time polymerase chain reaction (qRT-PCR) assays. Cell proliferation assay, transwell assay, and wound healing assay were used to measure the effects of miR-224-5p on the motility of UM in vitro. Western blot analysis and luciferase assays were used to detect the expression of PIK3R3 and AKT3 as miR-224-5p downstream targets. The results of Western blot analysis and qRT-PCR assays indicated that the expression of miR-224-5p was lower in UM tissues compared to normal tissue, while the expression of PIK3R3 and AKT3 were simultaneously increased. Upregulation of miR-224-5p significantly inhibited capacities of proliferation, invasion, and migration of OCM-1A cells and decreased expression of PIK3R3 and AKT3. Luciferase assay demonstrated PIK3R3 and AKT3 as downstream targets of miR-224-5p. Moreover, upregulating PIK3R3 and AKT3 restrained miR-224-5p-induced inhibition of the motility of OCM-1A cells. Thus, our study proved that miR-224-5p was involved in proliferation, invasion, and migration of UM cells via regulation the expression of PIK3R3 and AKT3. And the results also established a miR-224-5p/PIK3R3/PI3K/AKT axis in the regulation of UM progression, providing an experimental basis for further exploring the miR-224-5p as a therapeutic and diagnosis target for patients with UM.     

miR-377-5p inhibits lung cancer cell proliferation,invasion, and cell cycle progression by targeting AKT1 signaling

Lung carcinoma is the most common type of malignant tumors globally, and its molecular mechanisms remained unclear. With the aim to investigate the effects of microRNA (miR)-377-5p on the cell development, invasion, metastasis, and cycle of lung carcinoma, this study was performed. We evaluated miR-377-5p expression levels in lung cancer tissues and cell models. Cell viability, proliferation, migration, invasion abilities, and cell cycle distribution were measured using 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide, crystal violet, transwell, and flow cytometry assay. Furthermore, expression levels of protein kinase B α subunit (AKT1) and proteins related to cell cycle and epithelial-mesenchymal transition (EMT) were assessed using Western blot analysis and quantitative real-time polymerase chain reaction. These results suggested that miR-377-5p was downregulated in vivo and in cell models, and miR-377-5p overexpression inhibited cell viability, proliferation, migration, invasion, and induced cell-cycle arrest. In addition, as a target of miR-377-5p, AKT1 alleviated the decreases of cell viability, proliferation, migration, invasion, the S-phase cells, the expression of cyclin D1, fibronectin, and vimentin, as well as the increases of the G0/G1-phase cells, the expression of Foxo1, p27 ^kip1, p21 ^Cip1 and E-cadherin when miR-377-5p overexpressed. In conclusion, miR-377-5p inhibited cell development and regulated cell cycle distribution and EMT by targeting AKT1, which provided a theoretical basis for further study of lung carcinoma therapeutics.