5’tiRNA-Pro-TGG,a novel tRNA halve,promotes oncogenesis in sessile serrated lesions and serrated pathway of colorectal cancer
作者机构：Division of Gastroenterology and HepatologyRenji HospitalShanghai Jiaotong University School of MedicineShanghai 200000China Department of Spleen and Stomach and RheumatologyAffiliated Traditional Chinese Medicine Hospital of Southwest Medical UniversityLuzhou 646000Sichuan ProvinceChina
出 版 物：《World Journal of Gastrointestinal Oncology》 (世界胃肠肿瘤学杂志（英文版）（电子版）)
年 卷 期：2023年第15卷第6期
页 面：1005-1018页
核心收录：
学科分类：1002[医学-临床医学] 100214[医学-肿瘤学] 10[医学]
基 金：Supported by the Program of Health and Family Planning Research Project Plan of Pudong New Area Health Committee No.PW2020D-12
主 题：Noncoding RNA tRNA halves Sessile serrated lesions Colon cancer Serrated pathway
摘 要：BACKGROUND Transfer RNA(tRNA)-derived small RNAs(tsRNAs)are small fragments that form when tRNAs *** halves(tiRNAs),a subcategory of tsRNA,are involved in the oncogenic processes of many ***,their specific role in sessile serrated lesions(SSLs),a precancerous lesion often observed in the colon,has not yet been *** To identify SSL-related tiRNAs and their potential role in the development of SSLs and serrated pathway of colorectal cancer(CRC).METHODS Small-RNA sequencing was conducted in paired SSLs and their adjacent normal control(NC)*** expression levels of five SSL-related tiRNAs were validated by q-polymerase chain *** counting kit-8 and wound healing assays were performed to detect cell proliferation and *** target genes and sites of tiRNA-1:33-Pro-TGG-1(5′tiRNA-Pro-TGG)were predicted by TargetScan and miRanda ***-associated and immune-related pathways were analyzed by single-sample gene set enrichment *** analyses were performed to establish the roles of 5′tiRNA-Pro-TGG based on the target *** In total,we found 52 upregulated tsRNAs and 28 downregulated tsRNAs in SSLs compared to *** expression levels of tiRNA-1:33-Gly-CCC-2,tiRNA-1:33-Pro-TGG-1,and tiRNA-1:34-Thr-TGT-4-M25′tiRNAs were higher in SSLs than those in NC,while that of 5′tiRNA-Pro-TGG was associated with the size of *** was demonstrated that 5′tiRNAPro-TGG promoted cell proliferation and migration of RKO cell in ***,heparanase 2(HPSE2)was identified as a potential target gene of 5′*** lower expression was associated with a worse prognosis in ***,lower expression of HPSE2 was observed in SSLs compared to normal controls or conventional adenomas and in BRAF-mutant CRC compared to BRAF-wild *** analyses revealed that its low expression was associated with a low interferonγresponse and also with many metabolic pathways such as riboflavin,retinol,and cy
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