Abstract:Objective: To investigate the correlation between long non-coding RNA (lncRNA) tumor suppressor candidate 7 (TUSC7) and microRNA-1270 (miR-1270) in colorectal cancer (CRC) tissues and their relationship with the prognosis of CRC patients. Methods: The lnCAR database was used to search the expression of lncRNA TUSC7 in CRC and normal colorectal tissues.A total of 130 CRC patients accepted by our hospital from June 2018 to January 2019 were regarded as the research subjects.The surgically resected CRC and paracancerous tissues were collected,and the expression levels of lncRNA TUSC7 and miR-1270 in CRC and paracancerous tissues were detected; the correlation between the expression level of lncRNA TUSC7 and miR-1270 in CRC tissues was analyzed; the relationship between the expression levels of lncRNA TUSC7 and miR-1270 in CRC tissues and the clinicopathological characteristics and prognosis of CRC were analyzed,Bioinformatics website was used to predict the relationship between lncRNA TUSC7 and miR-1270. Results: The lnCAR database analysis showed that the expression level of lncRNA TUSC7 in CRC tissue was lower than that in normal colorectal tissue (P<0.05); qRT-PCR results showed that the expression level of lncRNA TUSC7 in CRC tissue was lower than that in adjacent tissue (P<0.05),and the expression level of miR-1270 was higher than that in adjacent tissue (P<0.05); the expression levels of lncRNA TUSC7 and miR-1270 in CRC tissue were correlated with the degree of differentiation,lymph node metastasis,depth of invasion and TNM stage (P<0.05); bioinformatics analysis showed that lncRNA TUSC7 had a targeted binding site for miR-1270; the expression level of lncRNA TUSC7 in CRC tissue was negatively correlated with miR-1270 (r=-0.578,P<0.05); the cumulative survival rate of CRC patients in lncRNA TUSC7 low expression group and miR-1270 high expression group was lower than that in lncRNA TUSC7 high expression group and miR-1270 low expression group (P<0.05). Conclusion: The expression of lncRNA TUSC7 is down-regulated and the expression of miR-1270 is up-regulated in CRC tissue,and the two are negatively correlated,which provides a new marker for clinical diagnosis and treatment of CRC and evaluation of the prognosis of CRC patients.
[1] 张雪,韩晶,周欣亮,等.DUOXA2在结直肠癌组织中表达及其与预后的关联[J].中华肿瘤防治杂志,2021,28(7):502-507. [2] Ostovarpour M,Khalaj-kondori M,Ghasemi T.Correlation between expression levels of lncRNA FER1L4 and RB1 in patients with colorectal cancer[J].Mol Biol Rep,2021,48(5):4581-4589. [3] Mei H,Wen Y.MicroRNAs for diagnosis and treatment of colorectal cancer[J].Endocr Metab Immune Disord Drug Targets,2021,21(1):47-55. [4] 曹珊珊,弓淑娟,李玮,等.结直肠癌组织中LncRNA TUSC7和p53的表达及临床意义[J].中国现代普通外科进展,2021,24(11):884-887. [5] Song Z,Wang J.LncRNA ASMTL-AS1/microRNA-1270 differentiate prognostic groups in gastric cancer and influence cell proliferation migration and invasion[J].Bioengineered,2022,13(1):1507-1517. [6] 卫生部医政司.结直肠癌诊疗规范(2010年版)[J].中华外科杂志,2011,3(6):130-146. [7] 聂向荣,武剑磊,武永庆.结直肠癌患者血清microRNA-335,microRNA-497表达与临床病理特征及预后的关系[J].中国现代医学杂志,2021,31(11):7-12. [8] Xu W,Ding M,Wang B,et al.Molecular mechanism of the canonical oncogenic incRNA MALAT1 in gastric cancer[J].Curr Med Chem,2021,28(42):8800-8809. [9] 赵珂,郭玉刚,霍正,等.食管鳞癌患者血清中lncRNA-TUSC7的表达及与细胞侵袭转移的关系[J].南方医科大学学报,2020,40(5):661-669. [10] Zhang H,Song Y,Yang C,et al.Overexpression of lncRNA TUSC7 reduces cell migration and invasion in colorectal cancer[J].Oncol Rep,2019,41(6):3386-3392. [11] Liu X,Ma R,Yi B,et al.MicroRNAs are involved in the development and progression of gastric cancer[J].Acta Pharmacol Sin,2021,42(7):1018-1026. [12] Wu Y,Liang Y,Li M,et al.Knockdown of long non-coding RNA SNHG8 suppresses the progression of esophageal cancer by regulating miR-1270/BACH1 axis[J].Bioengineered,2022,13(2):3384-3394 [13] Cao Y,Tao Q,Kao X,et al.Hsa-circRNA-103809 promotes hepatocellular carcinoma development via microRNA-1270/PLAG1 like zinc finger 2 axis[J].Dig Dis Sci,2021,66(5):1524-1532. [14] Yi T,Zhou X,Sang K,et al.MicroRNA-1270 modulates papillary thyroid cancer cell development by regulating SCAI[J].Biomed Pharmacother,2019,109(1):2357-2364. [15] Lin GB,Zhang CM,Chen XY,et al.Identification of circulating miRNAs as novel prognostic biomarkers for bladder cancer[J].Math Biosci Eng,2019,17(1):834-844.