PMID- 35354542 OWN - NLM STAT- MEDLINE DCOM- 20221102 LR - 20221228 IS - 1878-3562 (Electronic) IS - 1590-8658 (Linking) VI - 54 IP - 11 DP - 2022 Nov TI - Long noncoding RNA SNHG8 promotes chemoresistance in gastric cancer via binding with hnRNPA1 and stabilizing TROY expression. PG - 1573-1582 LID - S1590-8658(22)00202-X [pii] LID - 10.1016/j.dld.2022.02.011 [doi] AB - AIMS: To determine SNHG8's function and potential mechanisms in gastric cancer (GC) chemoresistance. METHODS: We assessed SNHG8 expression in GC cell lines, GC/CDDP cell lines (cell lines treated with cisplatin), and 42 GC tissues and SNHG8 levels in the lncRNA microarray analysis of AGS/CDDP and AGS cell lines. We also examined GC cell viability in vivo and in vitro and its apoptosis level with Flow cytometry assays. SNHG8 was localized in subcells using fluorescence in situ hybridization (FISH) and cell fraction assays, hnRNPA1's link to SNHG8 was determined utilizing RNA immunoprecipitation (RIP) and FISH assays, gene expression profiles were assessed employing RNA transcriptome sequencing, and hnRNPA1's relationship with TROY was ascertained with the RIP assay. RESULTS: SNHG8 increased significantly in GC cell lines and GC tissues. However, a decrease in its expression promoted sensitivity to chemotherapy and inhibited DNA damage repair in vitro and in vivo. SNHG8 appeared to regulate TROY expression via linking with hnRNPA1. Reducing TROY levels considerably stimulated GC cell chemosensitivity, whereas heightening them partially rescued the rate of chemoresistance caused by downregulating SNHG8. CONCLUSION: In summary, the "SNHG8/hnRNPA1-TROY" axis is crucial to GC chemoresistance. CI - Copyright (c) 2022 The Authors. Published by Elsevier Ltd.. All rights reserved. FAU - Zhu, Wenzhong AU - Zhu W AD - Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China. FAU - Tan, Lulu AU - Tan L AD - Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China. FAU - Ma, Tiantian AU - Ma T AD - Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China. FAU - Yin, Zhijie AU - Yin Z AD - Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China. FAU - Gao, Jinbo AU - Gao J AD - Department of Gastrointestinal Surgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China. Electronic address: jgao@hust.edu.cn. LA - eng PT - Journal Article DEP - 20220327 PL - Netherlands TA - Dig Liver Dis JT - Digestive and liver disease : official journal of the Italian Society of Gastroenterology and the Italian Association for the Study of the Liver JID - 100958385 RN - Q20Q21Q62J (Cisplatin) RN - 0 (MicroRNAs) RN - 0 (RNA, Long Noncoding) RN - 0 (hnRNPA1 protein, human) RN - 0 (Heterogeneous Nuclear Ribonucleoprotein A1) RN - 0 (TNFRSF19 protein, human) RN - 0 (Receptors, Tumor Necrosis Factor) SB - IM MH - Humans MH - Cell Line, Tumor MH - Cell Proliferation MH - Cisplatin/pharmacology/therapeutic use MH - Drug Resistance, Neoplasm/genetics MH - Gene Expression Regulation, Neoplastic MH - In Situ Hybridization, Fluorescence MH - *MicroRNAs/genetics MH - *RNA, Long Noncoding/genetics/metabolism MH - *Stomach Neoplasms/drug therapy/genetics/metabolism MH - *Heterogeneous Nuclear Ribonucleoprotein A1/metabolism MH - *Receptors, Tumor Necrosis Factor/metabolism OTO - NOTNLM OT - Chemoresistance OT - Gastric cancer OT - SNHG8 OT - TROY EDAT- 2022/04/01 06:00 MHDA- 2022/11/02 06:00 CRDT- 2022/03/31 05:10 PHST- 2021/09/14 00:00 [received] PHST- 2022/02/21 00:00 [revised] PHST- 2022/02/22 00:00 [accepted] PHST- 2022/04/01 06:00 [pubmed] PHST- 2022/11/02 06:00 [medline] PHST- 2022/03/31 05:10 [entrez] AID - S1590-8658(22)00202-X [pii] AID - 10.1016/j.dld.2022.02.011 [doi] PST - ppublish SO - Dig Liver Dis. 2022 Nov;54(11):1573-1582. doi: 10.1016/j.dld.2022.02.011. Epub 2022 Mar 27.