摘要
目的观察微小RNA(miRNA,miR)-29c在膀胱癌组织中的表达及对膀胱癌T24细胞增殖、凋亡、侵袭力的影响。方法选择长春大学医院及吉林大学第一医院2013年1月至2015年12月23例膀胱组组织标本及相应的癌旁组织标本,反转录-聚合酶链反应(RT-PCR)测定膀胱癌及癌旁组织中miRNA-29c的表达。miRNA-29c质粒转染膀胱癌124细胞,RT-PCR测定转染124细胞中miRNA-29c的表达量,噻唑蓝(MTT)检测细胞增殖,流式细胞仪测定细胞凋亡,Transwell检测细胞侵袭力。结果膀胱癌组织中miRNA-29c相对表达量(0.41±0.17)明显低于癌旁组织(1.00±0,00)(P〈0.05)。A组的miRNA-29c相对表达量(354.36±13.54)明显高于B组(1.21±0.02)和C组(1.00±0.01)(P〈0.05)。A组细胞早期凋亡率(25.63±0.86)%和总凋亡率(26.21±0.25)%均明显高于B组[(8.01±0.15)%、(8.69±0.13)%]和c组[(6.52±0.12)%、(6.81±0.16)%,P〈0.05]。A组细胞吸光度(A)值(0.589±0.302)明显低于B组(0.823±0.354)和c组(0.921±0.424,P〈0.05)。A组细胞侵袭数(56.24±2.15)明显低于B组(92.31±2.76)和c组(113.24±12.17,P〈0.05)。T24A组c-myc蛋白表达量(0.39±0.03)低于124B组(1.33±0.23)和c组(1.28±0.17,P〈0.05)。结论膀胱癌组织中miRNA-29c的表达量下降,miRNA-29e能够促进膀胱癌细胞凋亡,抑制膀胱癌细胞增殖,降低膀胱癌细胞的侵袭力,miRNA-29c抑制膀胱癌细胞增殖可能和蛋白激酶B(Akt)通路有关。
Objective To observe [he microRNA- 29c (miRNA- 29c) expression in bladder cancer tissue and its influence on the proliferation, apoptosis, invasion force of bladder cancer T24 cell. Methods We selected 23 cases of bladder cancer tissues and corresponding adjacent tissues in Changchun University Hospital from January 2013 to December 2015, reverse transcriptase - polymerase chain reaction (RT- PCR) was used to assay the expression of miRNA -29c in bladder cancer and adjacent tissues. Bladder cancer T24 cells were transfered with miRNA -29c, and we used RT - PCR to assay the expres- sion of miRNA -29c in transfected T24 cells, methyl thiazol tetrazolium (MTT) to deteete cell prolifera- tion, flow cytometry to measure apoptosis, Transwell to detecte cell invasiveness. Results The miRNA -29c relative expression level in bladder cancer tissues (0. 41 ±0. 17 ) was significantly lower than that in adjacent tissues ( 1.00 ±0. 00) (P 〈0. 05). The miRNA -29c relative expression level of group A (354.36 ± 13.54 ) was significantly higher than that of group B ( 1.21 ± 0.02 ) and group C ( 1.00 ± 0.01 ) ( P 〈 0. 05 ). The cell early apoptotic rate [ (25.63 ± 0. 86) % ] and total apoptosis rate [ (26. 21 ± 0. 25)% ] of group A was significantly higher than that of group B [ (8. 01 ± 0. 15 )%, (8.69 ± 0. 13 ) % ) ] and group C [ ( 6. 52 ± 0. 12) %, (6. 81 ± 0. 16) %, P 〈 0. 05 ]. The cell optical density val- ue of group A (0. 589 ±0. 302) was significantly lower than that of group B (0. 823 ±0. 354) and group C (0. 921 ± 0. 424) ( P 〈 0. 05 ). The invasive cell number of group A ( 56. 24 ± 2. 15 ) was significantly lower than that of group B (92. 31 ±2. 76) and group C (113.24 ± 12. 17) (P〈0. 05). The expression of e - mye protein in group A (0. 39 ± 0.03 ) was lower than that of group B ( 1.33 ± 0. 23 ) and group C( 1.28 ± 0. 17) (P 〈 0. 05). Conclusion The expression level of miRNA - 29c in bladder cancer tissues decreases, miRNA -29c can promote bladder cancer cell apoptosis, inhibite bladder cancer cell prolifera- tion and reduce the invasiveness of bladder cancer cell. miRNA - 29c inhibits the proliferation of bladder cancer ceils may be related to protein kinase B (Akt) pathway.
出处
《中华实验外科杂志》
CAS
CSCD
北大核心
2016年第12期2669-2671,共3页
Chinese Journal of Experimental Surgery
基金
吉林省科技厅2013年科技发展计划项目(20130522018JH)