目的检测膀胱癌中长链非编码RNA(long non-coding RNA,lncRNA)烟酰胺核苷酸转氢酶反义RNA1(nicotinamide nucleotide transhydrogenase antisense RNA 1,NNT-AS1)表达情况,研究其对膀胱癌细胞增殖、迁移、侵袭及肿瘤干细胞干性的影响及...目的检测膀胱癌中长链非编码RNA(long non-coding RNA,lncRNA)烟酰胺核苷酸转氢酶反义RNA1(nicotinamide nucleotide transhydrogenase antisense RNA 1,NNT-AS1)表达情况,研究其对膀胱癌细胞增殖、迁移、侵袭及肿瘤干细胞干性的影响及可能分子机制。方法实时荧光定量PCR(quantitative real-time PCR,qRT-PCR)法检测膀胱癌组织标本及细胞中LncRNA NNT-AS1表达情况;将膀胱癌细胞转染分为sh-NC组,sh-NNT-AS1组,sh-NNT-AS1+inh-582-5p组和sh-NNT-AS1+inh-582-5p+si-NCKAP1组。采用CCK-8法检测细胞增殖吸光度值(A值);Transwell实验检测细胞迁移、侵袭穿膜数;细胞成球实验检测干细胞干性。检索starBase和TargetScan数据库,并通过双荧光素酶报告基因实验预测验证LncRNA NNT-AS1和miR-582-5p,miR-582-5p与NCKAP1的靶向结合关系。Western blot检测膀胱癌干细胞标志蛋白(CD44,ALDH1A1,Oct4,Nanog)及Hippo-YAP/TAZ信号通路相关蛋白表达灰度值。结果与癌旁组织相比,膀胱癌组织中LncRNA NNT-AS1表达水平(0.34±0.07 vs 1.15±0.21)明显升高,差异有统计学意义(t=16.364,P<0.001)。与人正常膀胱上皮SV-HUC-1细胞(1.00±0.01)相比,膀胱癌细胞T24,5637,UM-UC-3和TCC-SUP中LncRNA NNT-AS1表达(6.03±0.17,4.66±0.36,5.47±0.26,3.02±0.20)明显升高,差异有统计学意义(t=17.472~51.160,均P<0.001)。与sh-NC组相比,在24,48和72 h时sh-NNT-AS1组细胞增值能力(A值)均显著降低(0.80±0.01 vs 1.07±0.06,1.18±0..07 vs 1.83±0.03,1.89±0.07 vs 2.53±0.06),差异有统计学意义(t=7.688,14.783,12.024,均P<0.05);sh-NNT-AS1组细胞迁移穿膜数(55.00±2.65个vs 354.30±7.84个)、细胞侵袭穿膜数(45.67±2.33个vs 303.00±9.07个)及膀胱癌干细胞成球数(20.85±2.17个vs 41.35±3.67个)显著降低,差异具有统计学意义(t=-62.641,-47.596,8.328,均P<0.001)。与sh-NC组相比,sh-NNT-AS1组细胞中CD44(0.04±0.01 vs 1.12±0.02),ALDH1A1(0.23±0.01 vs 1.16±0.05),Oct4(0.17±0.02 vs 1.10±0.04),Nanog(0.49±0.03 vs 1.24±0.03)的蛋白表达灰度值显著降低,差异具有统计学意义(t=83.656,31.591,36.019,30.619,均P<0.001)。与si-NC组相比,sh-NNT-AS1组CD44+CD133+细胞比例(9.30%±0.79%vs 88.50%±2.77%)明显降低,差异有统计学意义(t=-47.624,P<0.001)。双荧光素酶报告基因检测结果显示miR-582-5p为LncRNANNT-AS1靶基因,NCKAP1为miR-582-5p靶基因;LncRNA NNT-AS1靶向调控miR-582-5p/NCKAP1轴。与sh-NNT-AS1组相比,在24,48,72 h时sh-NNT-AS1+inh-582-5p组细胞增值能力(A值)均明显升高(0.98±0.03 vs 0.73±0.06,1.74±0.04 vs 1.22±0.05,2.33±0.16 vs 1.69±0.14),差异有统计学意义(t=5.977~11.628,均P<0.001)。与sh-NNT-AS1+inh-582-5p组相比,在24,48,72 h时sh-NNT-AS1+inh-582-5p+si-NCKAP1组细胞增值能力(A值)显著降低(0.69±0.04,1.01±0.07,1.39±0.08),差异有统计学意义(t=7.877~16.323,均P<0.001)。与sh-NNT-AS1组相比,sh-NNT-AS1+inh-582-5p组细胞迁移穿膜数(322.31±28.45个vs 81.42±13.22个)、细胞侵袭穿膜数(316.07±30.21个vs 92.13±12.65个)及膀胱癌干细胞成球数(38.55±2.20个vs 18.98±1.16个)显著增加,差异具有统计学意义(t=15.115,13.158,14.592,均P<0.001)。与sh-NNT-AS1组相比,sh-NNT-AS1+inh-582-5p组细胞CD44(1.05±0.08 vs 0.10±0.01),ALDH1A1(1.20±0.16 vs 0.22±0.02),Oct4(1.32±0.14 vs 0.19±0.03),Nanog(0.97±0.12 vs 0.15±0.04),YAP(1.29±0.11 vs 0.42±0.07)和TAZ(1.41±0.16 vs 0.35±0.05)蛋白表达灰度值均显著增加,差异具有统计学意义(t=10.650~21.243,均P<0.001)。与sh-NNT-AS1+inh-582-5p组相比,sh-NNT-AS1+inh-582-5p+si-NCKAP1组细胞迁移穿膜数(65.33±12.60个)、细胞侵袭穿膜数(71.08±15.19个)、膀胱癌干细胞成球数(11.36±1.05个)均显著降低,差异具有统计学意义(t=16.125,14.395,21.365,均P<0.001)。与sh-NNT-AS1+inh-582-5p组相比,sh-NNT-AS1+inh-582-5p+si-NCKAP1组细胞CD44(0.25±0.05),ALDH1A1(0.61±0.11),Oct4(0.22±0.08),Nanog(0.44±0.07),YAP(0.25±0.09)和TAZ(0.30±0.04)蛋白表达灰度值显著降低,差异具有统计学意义(t=6.412~17.889,均P<0.001)。结论膀胱癌中LncRNA NNT-AS1表达上调,其对膀胱癌细胞增殖、侵袭及肿瘤干细胞干性的影响,可能是通过调控miR-582-5p/NCKAP1分子轴,激活Hippo-YAP/TAZ信号通路完成。展开更多
Numerous circular RNAs(circ RNAs) have been identified as vital regulators in various cancers. The newly reported circular RNA ubiquitin-associated protein 2(circ UBAP2) is a critical player in cell growth and metasta...Numerous circular RNAs(circ RNAs) have been identified as vital regulators in various cancers. The newly reported circular RNA ubiquitin-associated protein 2(circ UBAP2) is a critical player in cell growth and metastasis in various types of cancers, although its role in colorectal cancer(CRC) has yet to be fully elucidated. We find that circ UBAP2 is upregulated in CRC tissues and cell lines to induce autophagy both in vitro and in vivo. The effects of circ UBAP2 on migration, invasion, and proliferation may be partially related to autophagy. Mechanistically, we uncover that circ UBAP2 can directly interact with mi R-582-5 p and subsequently act as a micro RNA sponge to regulate the expression of the mi R-582-5 p target gene forkhead box protein O1(FOXO1) and downstream signaling molecules, which collectively advance the progression and metastasis of CRC. These results suggest that circ UBAP2 acts as an oncogene via a novel circ UBAP2/mi R-582-5 p/FOXO1 axis, providing a potential biomarker and therapeutic target for CRC management.展开更多
文摘目的检测膀胱癌中长链非编码RNA(long non-coding RNA,lncRNA)烟酰胺核苷酸转氢酶反义RNA1(nicotinamide nucleotide transhydrogenase antisense RNA 1,NNT-AS1)表达情况,研究其对膀胱癌细胞增殖、迁移、侵袭及肿瘤干细胞干性的影响及可能分子机制。方法实时荧光定量PCR(quantitative real-time PCR,qRT-PCR)法检测膀胱癌组织标本及细胞中LncRNA NNT-AS1表达情况;将膀胱癌细胞转染分为sh-NC组,sh-NNT-AS1组,sh-NNT-AS1+inh-582-5p组和sh-NNT-AS1+inh-582-5p+si-NCKAP1组。采用CCK-8法检测细胞增殖吸光度值(A值);Transwell实验检测细胞迁移、侵袭穿膜数;细胞成球实验检测干细胞干性。检索starBase和TargetScan数据库,并通过双荧光素酶报告基因实验预测验证LncRNA NNT-AS1和miR-582-5p,miR-582-5p与NCKAP1的靶向结合关系。Western blot检测膀胱癌干细胞标志蛋白(CD44,ALDH1A1,Oct4,Nanog)及Hippo-YAP/TAZ信号通路相关蛋白表达灰度值。结果与癌旁组织相比,膀胱癌组织中LncRNA NNT-AS1表达水平(0.34±0.07 vs 1.15±0.21)明显升高,差异有统计学意义(t=16.364,P<0.001)。与人正常膀胱上皮SV-HUC-1细胞(1.00±0.01)相比,膀胱癌细胞T24,5637,UM-UC-3和TCC-SUP中LncRNA NNT-AS1表达(6.03±0.17,4.66±0.36,5.47±0.26,3.02±0.20)明显升高,差异有统计学意义(t=17.472~51.160,均P<0.001)。与sh-NC组相比,在24,48和72 h时sh-NNT-AS1组细胞增值能力(A值)均显著降低(0.80±0.01 vs 1.07±0.06,1.18±0..07 vs 1.83±0.03,1.89±0.07 vs 2.53±0.06),差异有统计学意义(t=7.688,14.783,12.024,均P<0.05);sh-NNT-AS1组细胞迁移穿膜数(55.00±2.65个vs 354.30±7.84个)、细胞侵袭穿膜数(45.67±2.33个vs 303.00±9.07个)及膀胱癌干细胞成球数(20.85±2.17个vs 41.35±3.67个)显著降低,差异具有统计学意义(t=-62.641,-47.596,8.328,均P<0.001)。与sh-NC组相比,sh-NNT-AS1组细胞中CD44(0.04±0.01 vs 1.12±0.02),ALDH1A1(0.23±0.01 vs 1.16±0.05),Oct4(0.17±0.02 vs 1.10±0.04),Nanog(0.49±0.03 vs 1.24±0.03)的蛋白表达灰度值显著降低,差异具有统计学意义(t=83.656,31.591,36.019,30.619,均P<0.001)。与si-NC组相比,sh-NNT-AS1组CD44+CD133+细胞比例(9.30%±0.79%vs 88.50%±2.77%)明显降低,差异有统计学意义(t=-47.624,P<0.001)。双荧光素酶报告基因检测结果显示miR-582-5p为LncRNANNT-AS1靶基因,NCKAP1为miR-582-5p靶基因;LncRNA NNT-AS1靶向调控miR-582-5p/NCKAP1轴。与sh-NNT-AS1组相比,在24,48,72 h时sh-NNT-AS1+inh-582-5p组细胞增值能力(A值)均明显升高(0.98±0.03 vs 0.73±0.06,1.74±0.04 vs 1.22±0.05,2.33±0.16 vs 1.69±0.14),差异有统计学意义(t=5.977~11.628,均P<0.001)。与sh-NNT-AS1+inh-582-5p组相比,在24,48,72 h时sh-NNT-AS1+inh-582-5p+si-NCKAP1组细胞增值能力(A值)显著降低(0.69±0.04,1.01±0.07,1.39±0.08),差异有统计学意义(t=7.877~16.323,均P<0.001)。与sh-NNT-AS1组相比,sh-NNT-AS1+inh-582-5p组细胞迁移穿膜数(322.31±28.45个vs 81.42±13.22个)、细胞侵袭穿膜数(316.07±30.21个vs 92.13±12.65个)及膀胱癌干细胞成球数(38.55±2.20个vs 18.98±1.16个)显著增加,差异具有统计学意义(t=15.115,13.158,14.592,均P<0.001)。与sh-NNT-AS1组相比,sh-NNT-AS1+inh-582-5p组细胞CD44(1.05±0.08 vs 0.10±0.01),ALDH1A1(1.20±0.16 vs 0.22±0.02),Oct4(1.32±0.14 vs 0.19±0.03),Nanog(0.97±0.12 vs 0.15±0.04),YAP(1.29±0.11 vs 0.42±0.07)和TAZ(1.41±0.16 vs 0.35±0.05)蛋白表达灰度值均显著增加,差异具有统计学意义(t=10.650~21.243,均P<0.001)。与sh-NNT-AS1+inh-582-5p组相比,sh-NNT-AS1+inh-582-5p+si-NCKAP1组细胞迁移穿膜数(65.33±12.60个)、细胞侵袭穿膜数(71.08±15.19个)、膀胱癌干细胞成球数(11.36±1.05个)均显著降低,差异具有统计学意义(t=16.125,14.395,21.365,均P<0.001)。与sh-NNT-AS1+inh-582-5p组相比,sh-NNT-AS1+inh-582-5p+si-NCKAP1组细胞CD44(0.25±0.05),ALDH1A1(0.61±0.11),Oct4(0.22±0.08),Nanog(0.44±0.07),YAP(0.25±0.09)和TAZ(0.30±0.04)蛋白表达灰度值显著降低,差异具有统计学意义(t=6.412~17.889,均P<0.001)。结论膀胱癌中LncRNA NNT-AS1表达上调,其对膀胱癌细胞增殖、侵袭及肿瘤干细胞干性的影响,可能是通过调控miR-582-5p/NCKAP1分子轴,激活Hippo-YAP/TAZ信号通路完成。
基金supported by grants from the National Natural Science Foundation of China(82072819,81972377)Xuzhou Science and Technology Project(KC19024)Jiangsu Research and Practice Innovation of Graduate Students(KYCX19-2213)。
文摘Numerous circular RNAs(circ RNAs) have been identified as vital regulators in various cancers. The newly reported circular RNA ubiquitin-associated protein 2(circ UBAP2) is a critical player in cell growth and metastasis in various types of cancers, although its role in colorectal cancer(CRC) has yet to be fully elucidated. We find that circ UBAP2 is upregulated in CRC tissues and cell lines to induce autophagy both in vitro and in vivo. The effects of circ UBAP2 on migration, invasion, and proliferation may be partially related to autophagy. Mechanistically, we uncover that circ UBAP2 can directly interact with mi R-582-5 p and subsequently act as a micro RNA sponge to regulate the expression of the mi R-582-5 p target gene forkhead box protein O1(FOXO1) and downstream signaling molecules, which collectively advance the progression and metastasis of CRC. These results suggest that circ UBAP2 acts as an oncogene via a novel circ UBAP2/mi R-582-5 p/FOXO1 axis, providing a potential biomarker and therapeutic target for CRC management.
