1.Expression of lncRNA ZFPM2-AS1 in bladder cancer and its effect on cell migration and proliferation
Zhihua YE ; Wei PENG ; Dingwen GUI ; Xiaoying WANG
Journal of Chinese Physician 2021;23(3):354-358
Objective:To analyze the expression of long non-coding RNA (lncRNA) ZFPM2-AS1 in bladder cancer tissues and cell lines, and to observe the effect of down-regulating ZFPM2-AS1 on the migration and proliferation of bladder cancer cells and explore its molecular mechanism.Methods:Real-time quantitative fluorescent polymerase chain reaction (qRT-PCR) was used to detect the expression of ZFPM2-AS1 in 51 pairs of bladder cancer tissues and adjacent tissues, bladder cancer cell lines (J82, 5637, BIU-87, T24) and human normal bladder epithelial cells SV-HUC-1. The bladder cancer cells with the highest ZFPM2-AS1 expression were selected and transfected with the small interfering siRNA-ZFPM2-AS1 plasmid and the negative control plasmid, respectively, and defined as the experimental group and the control group. qRT-PCR was used to detect the expression of ZFPM2-AS1 in two groups of cells. Transwell migration test and tetramethylazozole blue (MTT) method were used to detect the cell migration ability and proliferation ability of the two groups. qRT-PCR was used to detect the expression of Up-frameshift mutant 1 (UPF1) mRNA in two groups of cells. Western blot was used to detect the expression of UPF1 and mTOR signaling pathway proteins in the two groups of cells.Results:The expression of ZFPM2-AS1 in bladder cancer tissues was significantly higher than that in adjacent tissues ( P<0.01). The expression of ZFPM2-AS1 in bladder cancer cell lines was significantly higher than that in human normal bladder epithelial cells ( P<0.01), and ZFPM2-AS1 had the highest expression in BIU-87 cells ( P<0.01). Compared with the control group, the expression of ZFPM2-AS1 in BIU-87 cells in the experimental group was significantly reduced [(1.01±0.06) vs (0.16±0.04), t=12.28, P<0.01]. Compared with the control group, the migration ability of BIU-87 cells in the experimental group was decreased ( P<0.05), and the proliferation ability of BIU-87 cells was significantly decreased from the second day ( P<0.05). Compared with the control group, UPF1 mRNA expression in BIU-87 cells in the experimental group was significantly decreased [(1.00±0.02) vs (0.28±0.04), t=15.49, P<0.01]. Western blot results showed that UPF1 protein expression and mammalian rapamycin target protein (mTOR), GRB2, IRS1 and p-PI3K signal pathway protein expression were decreased in BIU-87 cells. Conclusions:ZFPM2-AS1 is highly expressed in bladder cancer tissues and cell lines. Down-regulating ZFPM2-AS1 can inhibit the migration and proliferation of BIU-87 cells. The molecular mechanism may be related to the inhibition of UPF1 gene expression.
2.Expression of miR-7850 in renal cell carcinoma and its effect on proliferation and migration of renal cell carcinoma
Fang XIE ; Geng HUANG ; Zhihua YE ; Xiaoying WANG ; Dingwen GUI
Journal of Chinese Physician 2021;23(5):668-673
Objective:To observe the expression of microRNA (miRNA, miR) -7850 in renal cancer tissues, and to explore the effect of miR-7850 on the proliferation and migration of renal cancer cells and on the regulation of serine proteinase inhibitor B3 (SERPINB3) gene expression.Methods:Real-time polymerase chain reaction (qRT-PCR) was used to detect the expression of miR-7850 in renal cancer tissues and renal cancer cell lines. The renal cell carcinoma cell line with the lowest expression of miR-7850 was selected, and the negative control sequence (miR-NC) and miR-7850 mimics were transfected into renal cell carcinoma cells by Lipofectamine 2000 transfection reagent, respectively, which were defined as miR-NC group and miR-7850 group. qRT-PCR was used to detect the expression of miR-7850 in transfected renal cancer cells. The cell proliferation and migration ability after transfection were detected by cell counting kit-8 (CCK-8) method and transwell experiment. Bioinformatics prediction and dual luciferase reporter gene experiments were used to verify the target gene of miR-7850. qRT-PCR and Western blot were used to detect the expression of target genes in renal cancer cells after transfection.Results:Compared with adjacent tissues (5.95±0.44), the expression of miR-7850 in kidney cancer tissues (1.19±0.33) was lower ( P<0.01). Compared with immortalized proximal renal tubular epithelial cells (1.01±0.07), the expression of miR-7850 was lower in renal cancer cell lines ( P<0.05), and the lowest in A498 cells (0.13±0.01) ( P<0.01). The expression of miR-7850 in the miR-7850 group (7.46±0.93) was significantly higher than that in the miR-NC group (1.01±0.08) ( P<0.01), indicating successful transfection. Compared with the miR-NC group, the cell proliferation ability of the miR-7850 group was significantly reduced ( P<0.05). The number of migrating cells in miR-NC group and miR-7850 group were (139.50±12.31) and (75.09±16.05) cells, respectively, and the cell migration ability in miR-7850 group decreased significantly ( P<0.01). Bioinformatics technology shows that the target gene of miR-7850 was SERPINB3. The dual luciferase reporter gene experiment confirmed that miR-7850 can target the SERPINB3 gene ( P<0.05). Compared with the miR-NC group, the expression of SERPINB3 in cells of miR-7850 group was significantly reduced ( P<0.05), as well as the CDK4, CyclinD, Snail and Vimentin. Conclusions:miR-7850 is lowly expressed in renal cancer tissues and cell lines. miR-7850 can inhibit the proliferation and migration of renal cancer A498 cells, which may be related to its inhibition of SERPINB3 gene expression.
3.Effect of microRNA-206 on the growth of prostate cancer cells by interfering with the expression of CDK4 and GAK
Geng HUANG ; Weidong JIANG ; Qing MAO ; Dingwen GUI
Journal of International Oncology 2017;44(7):485-489
Objective To investigate the effect of microRN-206 (miR-206) on the expression of Cyclin-dependent kinase 4 (CDK4) and Cyclin G-associated protein kinase (GAK), and the growth of prostate cancer cells.Methods Prostate cancer cell lines DU-145 and PC-3 were transfected with miR-NC (the control group) or miR-206 (the experimental group).The expressions of CDK4 and GAK mRNA were detected by real-time quantitative PCR (qRT-PCR).The expressions of CDK4 and GAK protein were detected by Western blotting.Cell cycle distribution was detected by flow cytometry.EdU proliferation assay and colony forming assay were used to analyze the cell proliferation ability.Results In DU-145 and PC-3 cells, the expressions of CDK4 mRNA in miR-NC group were 1.00±0.09, 1.00±0.10, the expressions of GAK mRNA were 1.00±0.05, 1.00±0.06.The expressions of CDK4 mRNA in miR-206 group were significantly decreased in DU-145 (0.36±0.18;t=6.572, P=0.001) and PC-3 cell lines (0.43±0.17;t=5.794, P=0.001).The expressions of GAK mRNA were also significantly decreased in DU-145 (0.23±0.04;t=22.420, P<0.001) and PC-3 cell lines (0.32±0.08;t=14.500, P<0.001).Western blotting results were consistent with qRT-PCR results.The results of flow cytometry showed that compared with the miR-NC group of DU-145 and PC-3 cell lines, the percentage of cells in S phase (23.60%±5.68% vs.32.53%±4.52%, t=2.462, P=0.049;22.09%±4.35% vs.30.96%±4.86%, t=2.720, P=0.035) and G2-M phase (16.28%±7.12% vs.26.63%±4.33%, t=2.484, P=0.048;14.60%±1.62% vs.24.68%±7.13%, t=2.758, P=0.033) decreased after transfection of miR-206, and the percentage of cells in G0-G1 phase (60.13%±5.82% vs.40.84%±5.37%, t=4.872, P=0.003;63.31%±3.27% vs.44.36%±3.82%, t=7.533, P<0.001) increased.The results of EdU proliferation assay showed that the proliferation abilities were significantly attenuated after transfection of miR-206 (22.56±3.81 vs.38.90±8.51, t=3.503, P=0.013;25.12±6.42 vs.48.45±8.92, t=4.244, P=0.005).The results of colony formation experiments showed that the numbers of colonies formed by DU-145 and PC-3 in miR-NC group were 218.66±44.59 and 177.35±24.49, respectively.The numbers of colonies formed in miR-206 group were 125.38±32.80 (t=3.370, P=0.015) and 82.65±14.05 (t=6.708, P=0.001), suggesting that cell proliferation ability in miR-206 group was reduced.Conclusion miR-206 significantly inhibits the growth of prostate cancer cells by interfering with the expressions of CDK4 and GAK, suggesting that miR-206 may be a molecular targeted therapy tool for prostate cancer.
4.Effect of exogenous dsRNA on expression of p21 in renal clear cell carcinoma cells
Geng HUANG ; Weidong JIANG ; Qing MAO ; Dingwen GUI
Journal of International Oncology 2017;44(7):481-484
Objective To investigate the effect of dsP21-555 transfection on the expression of tumor suppressor gene p21 in renal clear cell carcinoma cell lines ACHN and 786-O.Methods Renal clear cell carcinoma cells were transfected with dsControl and dsP21-555 with Lipofectamine 3000 respectively.Real-time quantitative PCR (RT-qPCR) and Western blotting were used to detect the expression of p21 mRNA and protein.Cell cycle distribution was detected by flow cytometry (FCM).Cell viability and proliferation were analyzed by cell viability assay (MTS method) and colony culture assay.Results In ACHN and 786-O cells, the expressions of p21 mRNA in dsP21-555 group (2.86±0.33, 1.96±0.35) were significantly higher than those in dsControl group (1.05±0.34, 1.01±0.14), which were increased to 2.72 times (t=7.640, P<0.001) and 1.95 times (t=5.058, P=0.002).Western blotting showed that the expressions of P21 protein were up-regulated in both renal cell lines, which was consistent with p21 mRNA up-regulation.The result of FCM showed that the cell cycle was blocked in G0-G1 phase (57.08%±5.66% vs.46.06%±4.60%, t=3.023, P=0.023;61.58%±6.23% vs.42.25%±6.08%, t=4.444, P=0.004) after transfection of dsP21-555 in renal clear cell carcinoma cells.MTS result showed that the vitality of both cell lines after transfection of dsP21-555 decreased compared with dsControl group, their absorbance values were 0.85±0.20 vs.1.27±0.13, t=3.410, P=0.014;1.04±0.25 vs.1.55±0.10, t=3.758, P=0.009.Colony culture experiments showed that the numbers of colonies formed by ACHN and 786-O in the dsControl group were 110.91±26.21 and 129.99±22.87 respectively, and the numbers of colonies formed in the dsP21-555 group were 59.37±14.23 (t=3.456, P=0.014) and 71.26±21.38 (t=3.745, P=0.010), indicating that the proliferation of cells in the dsP21-555 group was significantly reduced.Conclusion dsP21-555 can up-regulate the expression of p21 gene in renal clear cell carcinoma cells and inhibit the growth of carcinoma cells, suggesting that dsP21-555 may become a new gene therapy tool.
5.Effect of lentivirus-mediated interference with long non-coding RNA LINC00630 expression in vitro on proliferation and migration of bladder cancer cells
Geng HUANG ; Dingwen GUI ; Xiaoying WANG ; Wei PENG ; Yunfei ZHAO ; Jinghua WAN ; Fang XIE
Cancer Research and Clinic 2021;33(4):254-258
Objective:To explore the expression of long non-coding RNA LINC00630 in bladder cancer cell lines, and to explore the effect of interference with its expression in vitro on the proliferation and migration of bladder cancer cells.Methods:Real-time fluorescent quantitative polymerase chain reaction (qRT-PCR) was used to detect the expression of LINC00630 in bladder cancer cell lines 5637, BIU-87, T24, J82 and normal bladder epithelial cell line SV-HUC-1. The bladder cancer cell line with the highest LINC00630 expression was selected for follow-up experiments, then the cell line infected with the control lentivirus was used as the control group, and the cell line infected with the lentivirus that could interfere with the expression of LINC00630 was used as the experimental group. qRT-PCR was used to detect the expression of LINC00630 in the two groups of cells. MTS method and cell scratch test were used to detect the proliferation and migration abilities of cells in the two groups. qRT-PCR was used to detect the expression of neuregulin 1 (NRG1) mRNA in the two groups of cells, and Western blot was used to detect the expressions of NRG1 protein, cell proliferation-related proteins (cyclin D3 and CDK2) and cell migration-related proteins (Vimentin and N-cadherin) in the two groups of cells.Results:Compared with SV-HUC-1 cells (1.05±0.17), the expression of LINC00630 was significantly increased in all bladder cancer cell lines (all P < 0.01), and the expression was highest in J82 cells (relative expression 5.83±0.42). Compared with J82 cells of the control group, the expression of LINC00630 in J82 cells of the experimental group decreased (0.18±0.02 vs. 1.00±0.05, t=14.36, P < 0.01); from day 2 of transfection, the cell proliferation activity of the experimental group was lower than that of the control group (all P < 0.05). The cell scratch closure rate of the experimental group was lower than that of the control group [(27.4±7.1)% vs. (66.0±5.4)%, t = 4.31, P < 0.01]. Therelative expression of NRG1 mRNA in the experimental group was lower than that in the control group (0.34±0.03 vs. 1.07±0.24, t = 2.99, P < 0.05). Compared with the control group, the expressions of NRG1 protein, cell proliferation-related proteins and cell migration-related proteins in the experimental group were reduced. Conclusions:LINC00630 is up-regulated in bladder cancer cell lines, and interference with LINC00630 may inhibit the proliferation and migration of J82 cells by down-regulating the expression of NRG1 gene. LINC00630 may be a new molecular target for the treatment of bladder cancer.
6.Comparison of the efficacy and safety of suction ureteral stent and conventional ureteral stent in the treatment of urinary calculi
Yankuang GUO ; Zhiqiang RAN ; Tianbo LI ; Geng HUANG ; Dingwen GUI
Journal of Modern Urology 2024;29(5):412-416
Objective To compare the efficacy and safety of suction ureteral stent and conventional ureteral stent in the treatment of patients with urinary calculi,so as to evaluate the clinical application value.Methods A total of 196 patients with urinary calculi admitted to in our hospital during Dec.2022 and May 2023 were selected to undergo ureteral holmium laser lithotripsy with hard ureteroscopy or soft ureteroscopy,including 100 with suction ureteral stent(suction group)and 96 with conventional ureteral stent(conventional group).Basic data,visual analog scale(VAS),extubation time,extubation success rate,gross hematuria,lumbar and abdominal pain,and urinary tract infection were compared between the two groups.Results Compared with the conventional group,the suction group had lower VAS[(2.94±1.24)vs.(5.78±1.50)],shorter extubation time[(4.28±0.51)min vs.(13.51±1.81)min],and the differences were statistically significant(P<0.01).After extubation,the suction group had a lower incidence of complications(P<0.05).Conclusion Compared with conventional ureteral stent,extraction of suction ureteral stent has the advantages of simpler operation,better patient comfort,fewer complications,shorter extubation time and lower medical costs.
7.Inhibitory effects of Calycosin on the proliferation and migration of renal cancer cell by up-regulating the expression of miRNA-1246
Geng HUANG ; Xiaoling ZHANG ; Dingwen GUI ; Xiaoying WANG ; Qing LUO
International Journal of Surgery 2024;51(6):366-371
Objective:By observing the effects of Calycosin on the proliferation and migration of human renal cancer 769-P cell, to explore the possible molecular mechanism of Calycosin against renal cancer.Methods:769-P cell were cultured with different concentrations of Calycosin [0, 12.5, 25, 50, 100, 200 μmol/L, dissolved in Dimethyl sulfoxide (DMSO)], and the effects of different concentrations of Calycosin on the viability of 769-P cell was detected by CCK8 method. The 769-P cell treated with 200 μmol/L Calycosin were used as the Calycosin group, and the 769-P cell treated with DMSO were used as the control group. The cell colony formation assay and cell scratch assay were used to detect the effects of Calycosin on the proliferation and migration of 769-P cell, respectively. Real-time fluorescence quantitative polymerase chain reaction (RT-qPCR) was used to detect the effect of Calycosin on the expression of miRNA-1246 and chemokine receptor-4 (CXCR4) in 769-P cell. Western blotting method was used to detect the effects of Calycosin on the expression of CXCR4 and extracellular signal-regulated kinase (ERK) pathway proteins in 769-P cell. Measurement data were expressed as mean ± standard deviation ( ± s), and one-way ANOVA was used for comparison between multiple groups, while t-test was used for comparison between two groups. Results:After cultured with 0, 12.5, 25, 50, 100, and 200 μmol/L of Calycosin, the absorbance values of renal cancer 769-P cell were 0.99 ± 0.06, 0.74 ± 0.07, 0.60 ± 0.03, 0.55 ± 0.05, 0.40 ± 0.06, 0.21 ± 0.04, respectively; compared with 0 μmol/L, the Calycosin could reduce the survival rate of 769-P cell ( P<0.05). The number of clones of 769-P cell in the control group and the Calycosin group was 109.80 ± 13.19 and 60.66 ± 11.22, respectively, and the number of clones of the 769-P cell in the Calycosin group was decreased, the difference was statistically significant ( t=5.67, P<0.01). The relative migration rates of 769-P cell in the control group and the Calycosin group were (43.13 ± 3.82)% and (14.27 ± 3.25)%, respectively, after the 769-P cell were treated with Calycosin, the cell migration ability was weakened ( t=5.71, P<0.05). The relative expression levels of miRNA-1246 in 769-P cell of the control group and the Calycosin group was 1.03 ± 0.12 and 6.99 ± 1.84, respectively, and the relative expression levels of CXCR4 mRNA was 7.17 ± 2.96 and 0.98 ± 0.06, respectively, showed that Calycosin can up-regulate the expression of miRNA-1246 in 769-P cell ( t=3.24, P<0.01), and down-regulate the expression of CXCR4 mRNA ( t=4.18, P<0.01). Compared with the control group, the Calycosin could down-regulate the expression of CXCR4 protein and ERK pathway protein in 769-P cell. Conclusion:Calycosin can inhibit the proliferation and migration of renal cancer 769-P cell, and its mechanism may be related to up-regulating the expression of miRNA-1246 and blocking the CXCR4/ERK pathway.
8.Effects of miR-1249-5p on proliferation, metastasis and cell cycle of prostate cancer PC-3 cell
Gang LIU ; Dingwen GUI ; Shuai LUO ; Zuwei XU ; Geng HUANG ; Tingting ZHANG
International Journal of Surgery 2023;50(6):396-400,F2
Objective:To explore the effect of miR-1249-5p on the proliferation, metastasis and cell cycle of PC-3 cell in prostate cancer.Methods:The relationship between the expression level of miR-1249-5p and the overall survival of prostate cancer patients was analyzed using OncoMir Cancer Database (OMCD). The human prostate cancer cell line PC-3 was divided into two groups: miR-1249-5p group and negative control group. Mediated by Lipofectamine 2000, miR-1249-5p mimics liposome complex or negative miRNA liposome complex were transfected into PC-3 cell at logarithmic growth stage. Real-time quantitative polymerase chain reaction (RT-qPCR) was used to detect the expression of miR-1249-5p in PC-3 cell of two groups. Colony formation assay was used to detect the changes of the proliferation ability of PC-3 cell in the two groups. Transwell experiment was used to detect the changes of PC-3 cell invasion in the two groups, and the cell cycle changes of the two groups of PC-3 were detected by flow cytometry. The miRNA prediction software miRGator was used to predict the target gene of miR-1249-5p. RT-qPCR and Western blotting were used to detect the target gene expression of miR-1249-5p. Measurement data were expressed as mean±standard deviation ( ± s), and t-test was used for comparison between two groups. Results:Compared with prostate cancer patients with low miR-1249-5p expression, prostate cancer patients with higher miR-1249-5p expression had longer overall survival, and the difference was statistically significant ( P<0.01). The expression level of miR-1249-5p in the miR-1249-5p group (10.74±1.19) was significantly higher than that of the negative control group (1.56±0.27), the difference was statistically significant ( P<0.01). The number of colonies formed in the miR-1249-5p group (35.86±6.94) was significantly less than that in the negative control group (88.94±11.66), and the difference was statistically significant ( P<0.01). The number of transmembrane cells [(25.01±6.83)/high power field of view] in the miR-1249-5p group was significantly less than that of the negative control group [(82.76±8.35)/high power field of view], and the difference was statistically significant ( P<0.01). The proportion of cells in the G 0-G 1 phase in the miR-1249-5p group [(50.79±6.61)%] was significantly higher than that in the negative control group [(27.09±2.30)%], the difference was statistically significant ( P<0.01), and PC-3 cell were inhibited in the G 0-G 1 phase. Neural precursor cell expressed developmentally down-regulated 9 ( NEDD9) may be the target gene of miR-1249-5p. Compared with the negative control group, the NEDD9 gene expression in the miR-1249-5p group was significantly lower than that of the negative control group, the difference was statistically significant ( P<0.01). Conclusion:miR-1249-5p can inhibit the proliferation, metastasis and cell cycle of PC-3 cell in prostate cancer, which may be achieved by negatively regulating the expression of proto-oncogene NEDD9.
9.Effects of miRNA-676-3p on the proliferation and invasion of renal cancer by targeting PFDN1
Geng HUANG ; Dingwen GUI ; Xiaoying WANG ; Qing LUO ; Liqiong HUANG
International Journal of Surgery 2023;50(10):653-657
Objective:To explore the relationship between the relative expression of miRNA-676-3p and the survival of renal cancer patients, and its effect on the proliferation and invasion of renal cancer by targeting and regulating prefoldin 1 (PFDN1).Methods:OncoRank online software was selected to analyze the relationship between the relative expression of miRNA-676-3p and the survival rate of renal cancer patients. Real-time quantitative polymerase chain reaction (RT-qPCR) was used to detect the relative expression of miRNA-676-3p in renal cancer cell lines. Renal carcinoma CAKI1 cells were resuscitated, and the transfected miRNA-NC was used as the control group, and the transfected precursor miRNA-676-3p was used as the overexpression group. The relative expression of miRNA-676-3p was detected by RT-qPCR. The cell absorbance and invasion number of the two groups were measured by CCK-8 and Transwell invasion assays, respectively. The target gene of miRNA-676-3p was predicted and verified by referring to the TargetScan Release 8.0 website and dual-luciferase reporter gene experiment. The expression of PFDN1 gene and Wnt/β-catenin molecular pathway protein in the two groups of cells were determined by RT-qPCR and Western blotting, respectively. Measurement data were expressed as mean ± standard deviation ( ± s), t-test was used for comparison between two groups, and one-way analysis of variance was used for comparison between multiple groups. Results:The survival rate of renal cancer patients with high expression of miRNA-676-3p was significantly higher than that of renal cancer patients with low expression of miRNA-676-3p, the difference was statistically significant ( P<0.01). The relative expression of miRNA-676-3p in renal cancer cell lines was significantly lower than that in normal renal tubular epithelial cells, the difference was statistically significant ( P<0.01), and the relative expression of miRNA-676-3p in CAKI1 cells was the lowest, the difference was statistically significant ( P<0.01). The relative expression levels of miRNA-676-3p in the control and overexpression groups were 1.04±0.59 and 15.90±1.70, respectively, and the overexpression group was significantly higher than the control group, the difference was statistically significant ( P<0.01). After 24, 48, 60, and 72 h of culture, the absorbance of cells in the overexpression group was lower than that in the control group, the difference was statistically significant ( P<0.05). The number of invasion cells in the control group and the overexpression group were (115.90 ± 24.73) and (43.83 ± 21.94) cells, respectively, and the number of cell invasion in the overexpression group was significantly lower than that in the control group, the difference was statistically significant ( P<0.01). PFDN1 was the downstream target gene of miRNA-676-3p ( P<0.01). The relative expression of PFDN1 gene in the overexpression group was significantly lower than that in the control group, the difference was statistically significant ( P<0.01). The expression of Wnt/β-catenin molecular pathway proteins in the overexpression group was lower than that in the control group. Conclusions:Renal cancer patients with high expression of miRNA-676-3p had a higher survival rate. miRNA-676-3p inhibited the proliferation and invasion of renal cancer CAKI1 cells by significantly down-regulating the expression of PFDN1, thereby inhibiting the development of renal cancer.
10.Effect of lncRNA NPIPA9 on the growth and migration of prostate cancer cells by targeting miR-210-3p
Geng HUANG ; Dingwen GUI ; Chen YUAN ; Liqiong HUANG ; Xiaoling ZHANG
International Journal of Surgery 2023;50(10):681-686
Objective:The relative expression of lncRNA NPIPA9 in prostate cancer tissues was analyzed, and the relative expression of miR-210-3p and its effect on the growth and migration of prostate cancer cells were detected by overexpressing lncRNA NPIPA9.Methods:The relative expression of lncRNA NPIPA9 in prostate cancer tissues was analyzed by Oncomine database. Real-time quantitative polymerase chain reaction (RT-qPCR) was used to detect the relative expression of lncRNA NPIPA9 in prostate cancer cell lines DU-145, PC-3, C4-2B, 22Rv1, LNCaP and normal prostate epithelial cell RWPE-1. Prostate cancer PC-3 cells were cultured in vitro and divided into control group (transfected with control vector 100 nmol/L) and NPIPA9 group (transfected with lncRNA NPIPA9 vector 100 nmol/L). The proliferation activity of PC-3 cells was detected by CCK-8 method. The migration ability of PC-3 cells was detected by Transwell method. Potential target of lncRNA NPIPA9 were predicted using bioinformatics techniques. The dual-luciferase reporter gene assay determined the target binding relationship between lncRNA NPIPA9 and miR-210-3p. The effect of lncRNA NPIPA9 on the relative expression of miR-210-3p in prostate cancer cells was detected by RT-qPCR. The effect of lncRNA NPIPA9 on the expression of nuclear factor kappa-B (NF-κB) pathway proteins in prostate cancer cells was detected by Western blotting. Measurement data were expressed as mean±standard deviation ( ± s), and t-test was used for comparison between two groups, one-way analysis of variance was used for comparison between multiple groups. Results:The expression of lncRNA NPIPA9 in prostate cancer tissue was lower than that in adjacent tissue, the difference was statistically significant ( P<0.01). The relative expression of lncRNA NPIPA9 in prostate cancer cell lines was lower than that in RWPE-1 cells, the difference was statistically significant ( P<0.01), and the relative expression of lncRNA NPIPA9 in prostate cancer PC-3 cells was the lowest, the difference was statistically significant ( P<0.01). Compared with the control group, lncRNA NPIPA9 had an inhibitory effect on the viability of prostate cancer PC-3 cells, the difference was statistically significant ( P<0.05). The migration numbers of PC-3 cells in the control group and NPIPA9 group were 101.70±8.63 and 45.97±8.83, respectively, and lncRNA NPIPA9 had an inhibitory effect on PC-3 cell migration, the difference was statistically significant ( P<0.01). lncRNA NPIPA9 can directly target miR-210-3p, the difference was statistically significant ( P<0.01). The relative expression of miR-210-3p in PC-3 cells in control group and NPIPA9 group were 5.32 ± 0.79 and 1.11 ± 0.56, respectively, and lncRNA NPIPA9 could directly down-regulate the expression of miR-210-3p in PC-3 cells, the difference was statistically significant ( P<0.01). Compared with the control group, lncRNA NPIPA9 can reduce the expression of NF-κB pathway proteins c-Myc, MMP-9, VEGF, p65, p50 in PC-3 cells. Conclusion:The expression of lncRNA NPIPA9 is down-regulated in prostate cancer tissues, and it reduces the proliferation and migration ability of prostate cancer PC-3 cells by targeting and negatively regulating miR-210-3p.