PMID- 30753838 OWN - NLM STAT- MEDLINE DCOM- 20191230 LR - 20191230 IS - 1872-7980 (Electronic) IS - 0304-3835 (Linking) VI - 448 DP - 2019 Apr 28 TI - ZBTB7A, a miR-663a target gene, protects osteosarcoma from endoplasmic reticulum stress-induced apoptosis by suppressing LncRNA GAS5 expression. PG - 105-116 LID - S0304-3835(19)30076-X [pii] LID - 10.1016/j.canlet.2019.01.046 [doi] AB - Many studies have uncovered the essential role of ZBTB7A in regulating tumourigenesis. However, its functional significance in cell responses to endoplasmic reticulum stress (ER stress) remains poorly understood. Here we report that ZBTB7A functions as an important prosurvival factor in osteosarcoma cells undergoing pharmacological ER stress-induced by tunicamycin (TM) or thapsigargin (TG). The downregulation of ZBTB7A expression by ER stress promoted cell apoptosis in vitro and in vivo. ZBTB7A expression levels were increased in osteosarcoma tissues and elevated ZBTB7A was associated with osteosarcoma metastasis. Further mechanistic studies revealed that miR-663a induced by ER stress directly bound to the 3'UTR of ZBTB7A and contributed to ER stress-induced ZBTB7A downregulation in osteosarcoma cells. Additionally, our data revealed that ZBTB7A bound to the promoter of LncRNA GAS5 and transcriptionally suppressed LncRNA GAS5 expression, leading to a decline in ER stress-induced cell apoptosis. Collectively, our findings reveal the prosurvival role of ZBTB7A in osteosarcoma adaptation to ER stress and suggest that the miR-663a-ZBTB7A-LncRNAGAS5 pathway is essential for the survival of human osteosarcoma cells under ER stress. CI - Copyright (c) 2019 Elsevier B.V. All rights reserved. FAU - Zhang, Lu AU - Zhang L AD - The Second Affiliated Hospital & Institute of Cancer Stem Cell, Dalian Medical University, Dalian, Liaoning, 116044, PR China. FAU - Wang, Yuan AU - Wang Y AD - The Second Affiliated Hospital & Institute of Cancer Stem Cell, Dalian Medical University, Dalian, Liaoning, 116044, PR China. FAU - Zhang, Li AU - Zhang L AD - Laboratory of Pathogenic Biology, College of Basic Medical Science, Dalian Medical University, Dalian, 116044, China. FAU - Xia, Xin AU - Xia X AD - The Second Affiliated Hospital & Institute of Cancer Stem Cell, Dalian Medical University, Dalian, Liaoning, 116044, PR China. FAU - Chao, Yulin AU - Chao Y AD - The Second Affiliated Hospital & Institute of Cancer Stem Cell, Dalian Medical University, Dalian, Liaoning, 116044, PR China. FAU - He, Ruiping AU - He R AD - The Second Affiliated Hospital & Institute of Cancer Stem Cell, Dalian Medical University, Dalian, Liaoning, 116044, PR China. FAU - Han, Chuanchun AU - Han C AD - The Second Affiliated Hospital & Institute of Cancer Stem Cell, Dalian Medical University, Dalian, Liaoning, 116044, PR China. Electronic address: hanchuanchun@163.com. FAU - Zhao, Wenzhi AU - Zhao W AD - The Second Affiliated Hospital & Institute of Cancer Stem Cell, Dalian Medical University, Dalian, Liaoning, 116044, PR China. Electronic address: drzwz@163.com. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20190210 PL - Ireland TA - Cancer Lett JT - Cancer letters JID - 7600053 RN - 0 (DNA-Binding Proteins) RN - 0 (MIRN663 microRNA, human) RN - 0 (MicroRNAs) RN - 0 (RNA, Long Noncoding) RN - 0 (Transcription Factors) RN - 0 (ZBTB7A protein, human) SB - IM MH - Apoptosis/*physiology MH - Cell Line, Tumor MH - DNA-Binding Proteins/*physiology MH - Endoplasmic Reticulum Stress/*physiology MH - Humans MH - MicroRNAs/*physiology MH - Osteosarcoma/genetics/*metabolism MH - RNA, Long Noncoding/*metabolism MH - Transcription Factors/*physiology OTO - NOTNLM OT - ER stress OT - GAS5 OT - Osteosarcoma OT - ZBTB7A OT - miR-663a EDAT- 2019/02/13 06:00 MHDA- 2019/12/31 06:00 CRDT- 2019/02/13 06:00 PHST- 2018/10/14 00:00 [received] PHST- 2019/01/26 00:00 [revised] PHST- 2019/01/29 00:00 [accepted] PHST- 2019/02/13 06:00 [pubmed] PHST- 2019/12/31 06:00 [medline] PHST- 2019/02/13 06:00 [entrez] AID - S0304-3835(19)30076-X [pii] AID - 10.1016/j.canlet.2019.01.046 [doi] PST - ppublish SO - Cancer Lett. 2019 Apr 28;448:105-116. doi: 10.1016/j.canlet.2019.01.046. Epub 2019 Feb 10.