LncRNA HEIH通过miR-98-5p调节肺癌细胞增殖和凋亡

目的探讨lncRNA HEIH对肺癌细胞增殖和凋亡的影响及其作用机制。方法培养人正常肺上皮细胞BEAS-2B和肺癌细胞系A549、A427、H1299和TKB-1,RT-qPCR检测细胞中HEIH表达水平;分别转染si-HEIH和miR-98-5p mimics至A549细胞,沉默A549细胞中HEIH表达或过表达miR-98-5p;MTT法检测细胞增殖;流式细胞仪检测细胞凋亡;Western blot检测CCND1、caspase-3、SHH、GLI-1、PTCH和SUFU蛋白表达。双荧光素酶报告基因实验验证HEIH与miR-98-5p之间的关系。结果与正常肺上皮细胞BEAS-2B相比,肺癌细胞系A549、A427、H1299和TKB-1中HEIH表达水平显著升高(P<0.05).其中A549细胞中的HEIH表达最高。因此,后续实验选择A549细胞为研究对象。沉默HEIH表达或过表达miR-98-5p均可降低A549细胞培养12、48和72 h后吸光度值(A值)(P<0.05)(MTT法);升高凋亡率(P<0.05);抑制CCND1蛋白表达(P<0.05),促进caspase-3蛋白表达(P<0.05)。并且过表达miR-98-5p还抑制了A549细胞中SHH和GLI-1的mRNA和蛋白表达(P<0.05),促进了PTCH和SUFU的mRNA和蛋白表达水平(P<0.05)。过表达HEIH逆转了过表达miR-98-5p对A549细胞增殖、凋亡以及SHH、GLI-1、PTCH和SUFU的mRNA和蛋白表达的影响。结论沉默HEIH表达可能通过靶向miR-98-5p经Hedgehog信号通路抑制肺癌细胞的增殖,并促进其凋亡。     

LncRNA LINC00184 promotes docetaxel resistance and immune escape via miR-105-5p/PD-L1 axis in prostate cancer

BackgroundDocetaxel (DTX) resistance is a common factor in metastatic prostate cancer (PC) chemotherapy that leads to treatment failure. Because lncRNA is involved in a variety of regulatory processes in tumor progression, this study aimed to explore the function and mechanism of LINC00184 in docetaxel resistance of PC.MethodsTwo PC cell lines and their docetaxel resistant cell lines (DU145/DTX and PC3/DTX) were used. The expression of LINC00184 in both cell lines and PC patient samples were evaluated. SiRNA knocking down was used to test the function of LINC00184 in proliferation and colony formation. Interaction between LINC00184 and its target miR-105-5p, as well as miR-105-5p and PD-L1 was checked by luciferase reporter assay and RNA pull-down assay. PC cell line and CD8 + T cell co-culture system was established, miR-105-5p inhibitor was co-transfected with LINC00184 siRNA to investigate the underline mechanism.ResultsLINC00184 was found to be associated with docetaxel resistance and adverse prognosis of prostate cancer. It regulated docetaxel resistance and T-cell-mediated immune response in prostate cancer cells. LINC00184 was induced by adsorption of miR-105-5p and negatively regulated it, subsequently inhibited the expression level of PD-L1.ConclusionsLINC00184 promoted docetaxel resistance and immune escape in prostate cancer cells by adsorption of miR-105-5p, resulted in upregulation of the expression of PD-L1. LINC00184 could possibly be considered as a potential target for treatment in prostate cancer patients with docetaxel-resistance.     

Role of NEAT1/MiR-9-5p/SLC26A2 Pathway on Human Airway Smooth Muscle Cell

PurposeAsthma is a serious inflammatory disease of the respiratory system in which airway smooth muscle cells (ASMCs) play a key role. This study aimed to investigate the expression of SLC26A2 in human ASMCs (HASMCs) and the regulatory mechanism of SLC26A2 in the proliferation and inflammatory factor production of HASMCs.Materials and MethodsWe obtained the asthma-associated differential mRNA SLC26A2 by bioinformatics analysis in childhood acute asthma samples. To investigate its role in airway inflammation and airway remodeling, we treated HASMCs with platelet-derived growth factor (PDGF) in an in vitro model and determined SLC26A2 expression in cells using western blotting. Cell proliferation was detected by MTT and EdU assays, and cell contractile phenotype marker proteins were measured. Cell migration and production of inflammatory factors were determined by Transwell and ELISA assays. Additionally, the upstream regulatory miRNA and LncRNA of SLC26A2 were identified by bioinformatics, luciferase reporter gene, and RIP analyses.ResultsSLC26A2 was significantly upregulated in bioinformatics analysis of pediatric asthma-related sample. PDGF treatment up-regulated SLC26A2 expression in HASMCs, whereas the knockdown of SLC26A2 inhibited PDGF-stimulated proliferation, migration, and production of inflammatory factors, and enhanced the expression of cell contractile phenotype marker proteins in HASMCs. Luciferase reporter and RIP experiments validated that NEAT1 targeted miR-9-5p to regulate SLC26A2, thereby influencing the biological function of PDGF-induced HASMCs.ConclusionThese findings indicate that NEAT1-mediated miR-9-5p targeting of SLC26A2 inhibits the PDGF-induced proliferation and production of inflammatory factors in HASMCs. These findings highlight potential therapeutic targets for asthma and airway inflammation.     

微小RNA-138-5p抑制肺癌细胞增殖、迁移和侵袭能力的机制研究

目的:探讨微小RNA-138-5p(miR-138-5p)抑制肺癌细胞增殖、迁移和侵袭能力的相关机制。方法:以肺癌细胞A549和H460作为研究对象,分别转染miR-NC(对照组)或miR-138-5p(实验组);生物信息学技术预测miR-138-5p的靶基因;RT-qPCR检测转染后细胞miR-138-5p、叉头框蛋白C1(FOXC1)mRNA和波形蛋白(vimentin)mRNA的相对表达量;Western blot法检测FOXC1、vimentin、E-cadherin、N-cadherin和β-catenin蛋白表达变化;MTS法和集落形成实验分别检测细胞的增殖能力;划痕愈合实验和Transwell法检测细胞迁移和侵袭能力。结果:miR-138-5p过表达显著降低FOXC1和vimentin的mRNA及蛋白的表达(P0.05),E-cadherin和β-catenin蛋白表达上调,N-cadherin蛋白表达下调,显著抑制肺癌细胞的增殖、迁移和侵袭能力(P0.05)。结论:miR-138-5p可以通过靶向干扰FOXC1和vimentin的表达抑制肺癌细胞的增殖、迁移和侵袭,可能是肺癌基因治疗的潜在靶点。     

微小RNA-98-5p靶向调控核糖核苷酸还原酶小亚基M2调控宫颈癌细胞顺铂的耐药性

目的 探讨微小RNA（miR)-98-5p对顺铂(DDP)耐药宫颈癌细胞顺铂敏感性的调控及其机制。 方法 用脂质体法将DDP+miR-NC组（转染miR-NC）、DDP+miR-98-5p组（转染miR-98-5p mimics）、DDP+si-NC组（转染si-NC）、DDP+si-核糖核苷酸还原酶小亚基M2（RRM2）组（转染si-RRM2）、DDP+miR-98-5p+pcDNA组（共转染miR-98-5p mimics和pcDNA）、DDP+miR-98-5p+pcDNA-RRM2组（共转染miR-98-5p mimics和pcDNA-RRM2）转染至HeLa/DDP组细胞;Real-time PCR、Western blotting、CCK-8、迁移实验（Transwell）和双荧光素酶报告基因检测细胞中miR-98-5p、RRM2、细胞周期蛋白D1（cyclin D1）、P21、基因金属蛋白酶（MMP）-2、MMP-9的表达、细胞的抑制率、半数抑制浓度（IC50）、迁移和侵袭及荧光活性。 结果 与HeLa组细胞相比,HeLa/DDP组细胞中miR-98-5p表达显著降低,RRM2表达显著升高,IC₅₀值显著升高（P<0.05）;过表达miR-98-5p或抑制RRM2可明显抑制HeLa/DDP细胞的增殖、迁移和侵袭,下调cyclin D1、MMP-2、MMP-9蛋白,上调P21蛋白;miR-98-5p明显抑制野生型RRM2细胞的荧光活性,并且过表达RRM2反转了miR-98-5p对HeLa/DDP细胞增殖、迁移侵袭的抑制作用。 结论 MiR-98-5p可抑制顺铂耐药宫颈癌细胞的增殖、迁移和侵袭,增强对顺铂的敏感性,其机制与靶向RRM2相关,将可为顺铂耐药宫颈癌细胞的治疗提供方向。     

MiR-515-5p通过调控硫酸软骨素蛋白聚糖4表达对卵巢癌A2780细胞增殖和转移的影响及其机制

目的 探讨miR-515-5p对硫酸软骨素蛋白聚糖4(CSPG4)的靶向调控作用,以及对卵巢癌细胞系A2780细胞增殖和转移的影响.方法 通过生物信息学工具预测miR-515-5p的靶基因.Real-time PCR和Western blotting法检测65例卵巢癌组织和与其对应的癌旁组织中miR-515-5p和CS...     

MicroRNA-574-5p directly targets FOXN3 to mediate thyroid cancer progression via Wnt/β-catenin signaling pathway

ObjectiveThyroid cancer is the most common endocrine tumor. A large number of thyroid cancer-related miRNAs have been studied and identified. However, the detailed roles of miR-574-5p in thyroid cancer remain poorly understood. This work mainly aimed to investigate the role of miR-574-5p/FOXN3 axis and its mechanism in the thyroid cancer progression.MethodsMiR-574-5p, FOXN3, Wnt/β-catenin pathway, and apoptosis-related markers were measured by quantitative real-time PCR (qRT-PCR) and western blotting analysis, respectively. Luciferase reporter assay was employed to validate the direct targeting of FOXN3 by miR-574-5p. MTT, flow cytometry, wound healing and transwell experiments were applied to analyze the functions of FOXN3 and miR-574-5p in thyroid cancer cells.ResultsKnockdown of miR-574-5p up-regulated FOXN3 expression and miR-574-5p directly targeted FOXN3 in thyroid cancer cells. Biological function experiments showed that knockdown of miR-574-5p inhibited proliferation, migration, invasion and promoted apoptosis of thyroid cancer cells. The activation of Wnt/β-catenin pathway was suppressed by MiR-574-5p silencing. FOXN3 silencing reversed the effects of miR-574-5p inhibitor on FOXN3 level and Wnt/β-catenin singling pathway, also reversed the effects on cell migration, proliferation, invasion and apoptosis.ConclusionThe miR-574-5p/FOXN3 axis is a novel molecular mechanism that promotes thyroid cancer progression, suggesting their potential for clinical therapy of thyroid cancer.     

卵巢癌患者miR-497、miR-125a-5p的表达及与其临床特征和生存率的关系

目的:分析卵巢癌患者癌组织中微小RNA-497(miR-497)和微小RNA-125a-5p(miR-125a-5p)的表达情况及其临床意义。方法:选取2018-06—2019-12在本院手术治疗的96例卵巢癌患者作为研究对象,将手术切除的卵巢癌组织作为试验组,癌旁(>2cm)正常组织为对照组。采用实时荧光定量PCR(qRT-PCR)检测组织中miR-497和miR-125a-5p的表达情况;比较不同临床病理特征卵巢癌患者miR-497和miR-125a-5p表达水平的差异;分析卵巢癌患者三年生存率与miR-497和miR-125a-5p水平的关系;分析影响卵巢癌患者生存率的危险因素。结果:试验组miR-497和miR-125a-5p的表达量均明显低于对照组(P<0.01);与Ⅰ-Ⅱ期卵巢癌患者相比,Ⅲ-Ⅳ期患者miR-497、miR-125a-5p表达水平均较低(P<0.01),与无淋巴结转移患者相比,淋巴结转移者miR-497、miR-125a-5p表达水平均较低(P<0.05);miR-497、miR-125a-5p低表达组生存率均明显低于高表达组(P<0.05);COX回归分析显示miR-497低表达及miR-125a-5p低表达是影响卵巢癌患者生存率的独立危险因素。结论:卵巢癌患者癌组织中miR-497和miR-125a-5p表达下调,其表达水平与卵巢癌患者三年生存率密切相关。     

miR-490-3p通过抑制TGFβR1基因表达进而抑制结肠癌细胞的转移和侵袭

目的：研究miR-490-3p在结肠癌细胞(colorectal cancer cell,CRC)转移中的表现和生物功能,及其调控作用机制。方法：通过荧光定量PCR测定miR-490-3p在CRC细胞系的表达水平。细胞转染miR-490-3p以及shmiR-490-3p,观察miR-490-3p的过表达或基因沉默对结肠癌细胞的转移能力是否有影响。miR-490-3p的分子靶标由双荧光素酶报告基因分析和免疫印迹技术进行实验认定。通过划痕实验,Transwell小室基质渗透实验对细胞迁移和侵袭能力进行鉴定。结果：miR-490-3p在CRC细胞系中显著低表达(P<0.05,P<0.01,P<0.001,n>3)。过表达miR-490-3p显著降低CRC细胞株的细胞迁移和侵袭能力(P<0.01,n>3)。miR-490-3p的基因沉默显著增加CRC细胞株的细胞迁移和侵袭能力(P<0.01,n>3)。结肠癌细胞细胞系中过表达miR-490-3p显著降低TGFβR1的基因表达(P<0.001,n>3),miR-490-3p基因沉默显著上调TGFβR1的基因表达(P<0.001,n>3)。过表达miR-490-3p抑制TGFβR1的萤光素酶活性(P<0.001,n>3),miR-490-3p基因沉默促进TGFβR1的萤光素酶活性(P<0.001,n>3)。TGFβR1基因沉默减弱shmiR-490介导的细胞迁移和侵袭促进效应(P<0.01, n>3)。结论：miR-490-3p通过抑制TGFβR1的基因表达从而抑制CRC细胞的转移。     

MircoRNA-129-5p suppresses the development of glioma by targeting HOXC10

BackgroundmiR-129-5p has been reported to be abnormally expressed and plays an important role in the progression of various malignancies. However, its role in gliomas and its exact molecular mechanism need further research.Methods and materialsRT-qPCR was performed to evaluate miR-129-5p and HOXC10 mRNA expression levels in tissues and cell lines. Cell proliferation was detected via Cell Counting Kit-8 (CCK-8), 5-ethynyl-2′-deoxyuridine (EdU) and clone formation assays. Luciferase assays were used to validate the binding of seeds between miR-129-5p and HOXC10. A tumor xenograft model was developed to study the effect of miR‐129-5p on glioma growth in vivo.ResultsmiR-129-5p was expressed at low levels in glioma tissues and cell lines. miR-129-5p overexpression inhibited glioma proliferation, migration and invasion. miR-129-5p negatively and directly targeted HOXC10. At the same time, HOXC10 was upregulated in glioma cancer, and HOXC10 knockdown inhibited cell proliferation, migration and invasion.ConclusionmiR-129-5p inhibits glioma development by altering HOXC10 expression and may therefore serve as a new diagnostic marker and therapeutic target for glioma in the future.     

LncRNA NCK1-AS1 promotes non-small cell lung cancer progression via regulating miR-512-5p/p21 axis

ObjectiveThis study aimed at probing into the effect of lncRNA NCK1-AS1 on proliferation, migration and invasion of non-small cell lung cancer (NSCLC) cells and its regulatory function on miR-512-5p/p21 molecular axis.MethodsQuantitative real-time polymerase chain reaction (qRT-PCR) was used to assess the expressions of NCK1-AS1 and miR-512-5p in NSCLC tissues and cell lines. The alterations of cell proliferation, migration, invasion and cell cycle were examined by cell counting kit-8 (CCK-8) assay, BrdU experiment, Transwell experiment and flow cytometry, respectively. The dual-luciferase reporter assay and RNA immunoprecipitation experiment were performed to validate the binding relationships between miR-512-5p and NCK1-AS1, and miR-512-5p the 3'UTR of p21 mRNA. Western blot was used to determine the effects of NCK1-AS1 and miR-512-5p on p21 protein expression.ResultsNCK1-AS1 expression was up-regulated in NSCLC tissues and cells, and its high expression was correlated with shorter overall survival time and faster progression of patients. Overexpression of NCK1-AS1 promoted NSCLC cell proliferation, migration and invasion, and accelerated the cell cycle, whereas NCK1-AS1 siRNA inhibited these malignant biological behaviors, and arrested cell cycle. NCK1-AS1 could bind to miR-512-5p, p21 was verified as a target gene of miR-512-5p, and NCK1-AS1 could up-regulate the expression of p21 in NSCLC cells via repressing miR-512-5p expression.ConclusionNCK1-AS1 promotes NSCLC progression by regulating miR-512-5p/p21 molecular axis.     

MiR-124-3p inhibits the migration and invasion of Gastric cancer by targeting ITGB3

BACKGROUNDGastric cancer is one of the major malignant tumors in the world. Integrins expressed in cancer cells can promote tumor progression and migration. MiRNAs can inhibit the expression of target genes by directly binding to their mRNAs and can affect various important biological processes. The aim of this study was to investigate the role of miR-124- 3p and ITGB3 in gastric cancer.METHODSRT-PCR and western blot are used to detect the expression of miR-124-3p, ITGB3 and integrin β3 in gastric cancer tissues and cells. The wound healing, CCK-8 assay, transwell migration and invasion assay were performed to determine the cell proliferation, migration and invasion. What’s more, bioinformatics prediction and luciferase assay was conducted to demonstrated the binding efficiency between miR-124-3p and ITGB3.RESULTSWe verified that ITGB3 and miR-124-3p changes the migration and invasion of gastric cancer cells in vitro. The overexpression or silencing of miR-124-3p inhibited or promoted the proliferation, migration and invasion of both selected gastric cancer cells, and ITGB3 is just the reverse. Meanwhile, we validated that ITGB3 is the target of miR-124-3p by bioinformatics prediction and luciferase assay. Lastly, the expression of ITGB3 in 40 pairs of gastric cancer tissues were significantly higher than that in the adjacent normal tissues, while the expression level of miR-124-3p was significantly decreased in cancer tissues.CONCLUSIONSmiR-124-3p inhibits the migration and invasion of Gastric cancer by targeting ITGB3 in gastric cancer cells. Our results suggested that miR-124-3p and ITGB3 may reasonably serve as a promising therapeutic target.     

长链非编码RNA UCA1 靶向miR-582-5p 对膀胱癌UM-UC-3细胞生存和运动能力的调节作用及机制研究

目的：探究长链非编码RNA-UCA1通过靶向miR-582-5p对膀胱癌细胞生存和运动能力的作用及作用机制。方法：用UCA1-shRNA(sh-UCA1)和(或)miR-582-5p inhibitor转染细胞,荧光定量检测转染效率及miR-582-5p的表达水平;荧光素酶报告实验确定UCA1和miR-582-5p的靶向关系;CCK8检测细胞活性,流式检测细胞凋亡情况,侵袭及划痕实验检测细胞侵袭迁移能力,免疫印迹检测细胞增殖、凋亡及迁移相关蛋白的表达。结果：sh-UCA1能显著降低膀胱癌细胞UCA1表达水平(P<0.05),促进miR-582-5p表达(P<0.05);miR-582-5p-inhibitor能明显减弱sh-UCA1对miR-582-5p表达的促进作用(P<0.05);荧光素酶报告实验表明UCA1上有miR-582-5p的结合位点;沉默UCA1可显著抑制膀胱癌细胞增殖及Ki67的表达,促进细胞凋亡及cleaved caspase-3的表达(P<0.05);同时,sh-UCA1还能显著抑制膀胱癌细胞侵袭、迁移及VEGF的表达(P<0.05);此外,miR-582-5p inhibitor可显著减弱sh-UCA1对细胞增殖、凋亡及侵袭迁移能力的作用(P<0.05)。结论：UCA1可通过靶向miR-582-5p增强膀胱癌UM-UC-3细胞的生存及运动能力。     

miR-29c-3p regulates TET2 expression and inhibits autophagy process in Parkinson's disease models

Autophagy in dopamine (DA) neurons is concerned to be associated with Parkinson's disease (PD), but the detailed mechanism remains unknown. Herein, we aimed to investigate the function of microRNA (miR)-29c-3p in autophagy in PD models. Intraperitoneal injection of MPTP (20 mg/kg) was given to C57BL/6 mice to establish PD mouse model. SH-SY5Y cells were treated with MPP⁺ (1 mmol/L) to establish in vitro PD model. The results indicated that in the substantia nigra pars compacta (SNpc) DA neurons of PD mice, autophagy was activated accompanied by down-regulated miR-29c-3p and up-regulated ten-eleven translocation 2 (TET2) expression. Up-regulation of miR-29c-3p inhibited TET2 expression and SNpc (including DA neurons) autophagy in PD mice. In vitro PD model confirmed that MPP⁺ treatment markedly down-regulated miR-29c-3p expression and up-regulated TET2 expression in SH-SY5Y cells in a dose/time-dependent manner. Moreover, miR-29c-3p up-regulation also inhibited autophagy and TET2 expression in vitro. Additionally, TET2 was proved to be targeted and down-regulated by miR-29c-3p. TET2 knockdown inhibited MPP⁺-induced autophagy, whereas TET2 over-expression reversed the effects of miR-29c-3p over-expression on SH-SY5Y cell autophagy. Overall, miR-29c-3p over-expression inhibits autophagy in PD models, which may be mediated by TET2. Our finding may provide new insights for regulating autophagy to improve PD progression.     

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.     

miR-141-3p对卵巢癌的作用及其机制

目的:探究miR-141-3p在卵巢癌中的作用及其相关的分子机制.方法:实时荧光定量PCR检测30例卵巢囊肿和30例卵巢癌组织中miR-141-3p和表皮生长因子受体(EGFR)的表达水平.将SKOV3细胞分为NC组(无转染的SKOV3细胞),miR-141-3p组(SKOV3细胞转染miR-141-3p),LV-EG...     

LncRNA TMPO-AS1 up-regulates the expression of HIF-1α and promotes the malignant phenotypes of retinoblastoma cells via sponging miR-199a-5p

BackgroundLong non-coding RNA (lncRNA) TMPO antisense RNA 1 (TMPO-AS1) is reported to be oncogenic in prostate cancer and lung cancer. This study aims to investigate the expression and biological function of it in retinoblastoma (RB), and explore its regulatory role for miR-199a-5p and hypoxia-inducible factor-1α (HIF-1α).MethodsPaired RB samples were collected, and the expression levels of TMPO-AS1, miR-199a-5p and HIF-1α were examined by quantitative real-time polymerase chain reaction (qRT-PCR); TMPO-AS1 overexpressing plasmids and TMPO-AS1 shRNA were transfected into HXO-RB44 and SO-Rb50 cell lines respectively, and then proliferation, migration and invasion of RB cells were detected by CCK-8 assay and Transwell method. qRT-PCR and western blot were used to analyze the regulatory function of TMPO-AS1 on miR-199a-5p and HIF-1α; luciferase reporter gene assay was used to determine the regulatory relationship between miR-199a-5p and TMPO-AS1.ResultsTMPO-AS1 was significantly up-regulated in cancerous tissues of RB samples (relatively expression: 2.97 vs 3.93, p < 0.001), negatively correlated with miR-199a-5p (r=-0.4813, p < 0.01). There was one binding site on TMPO-AS1 for miR-199a-5p. After transfection of TMPO-AS1 shRNAs into RB cells, the proliferation, migration and invasion of cancer cells was significantly inhibited, while TMPO-AS1 had opposite effects; TMPO-AS1 was also demonstrated to regulate the expression of HIF-1α on both mRNA and protein levels via negatively regulating miR-199a-5p.ConclusionTMPO-AS1 is abnormally up-regulated in RB tissues, and it can modulate the proliferation and migration of RB cells. It has the potential to be the “ceRNA” to regulate HIF-1α expression by sponging miR-199a-5p.