PMID- 31037832 OWN - NLM STAT- MEDLINE DCOM- 20200218 LR - 20230919 IS - 2211-5463 (Electronic) IS - 2211-5463 (Linking) VI - 9 IP - 7 DP - 2019 Jul TI - LncRNA MALAT1 increases the stemness of gastric cancer cells via enhancing SOX2 mRNA stability. PG - 1212-1222 LID - 10.1002/2211-5463.12649 [doi] AB - Gastric cancer is one of the most common malignancies globally; cancer stem cells (CSCs) are regarded as being at the root of tumor progression, and there is thus a need to identify potential drugs to target CSCs. The long non-coding RNA MALAT1 promotes epithelial-mesenchymal transition and angiogenesis in colorectal cancer, but it is unknown whether it affects the stemness of gastric cancer cells. Here, we found that knockdown (KD) of MALAT1 attenuated the stemness of non-adherent gastric cancer cell spheroids, as evidenced by a decrease in primary and secondary spheroid formation capacity and expression of stemness markers. In contrast, overexpression (OE) of MALAT1 enhanced the stemness of adherent gastric cancer cells. Notably, KD of MALAT1 enhanced radiosensitivity and chemosensitivity of gastric cancer cell spheroids. We report that MALAT1 directly binds to sox2 mRNA (which encodes a critical master pluripotency factor), enhances the mRNA stability and increases its expression; KD of sox2 partially reversed the effect of MALAT1 OE on the stemness of gastric cancer cells. Importantly, expression of MALAT1 and sox2 exhibited a positive correlation in clinical samples. Therefore, our results indicate the existence of a novel MALAT1-sox2 axis which promotes the stemness of gastric cancer cells and may be a potential target for gastric cancer. CI - (c) The Authors. Published by FEBS Press and John Wiley & Sons Ltd. FAU - Xiao, Yiwen AU - Xiao Y AD - Department of Oncology, Changzhou Second People's Hospital, China. FAU - Pan, Jingjing AU - Pan J AD - Department of Oncology, Changzhou Second People's Hospital, China. FAU - Geng, Qian AU - Geng Q AD - Department of Oncology, Changzhou Second People's Hospital, China. FAU - Wang, Ge AU - Wang G AD - Department of Oncology, Changzhou Second People's Hospital, China. LA - eng PT - Journal Article PT - Retracted Publication DEP - 20190602 PL - England TA - FEBS Open Bio JT - FEBS open bio JID - 101580716 RN - 0 (MALAT1 long non-coding RNA, human) RN - 0 (RNA, Long Noncoding) RN - 0 (RNA, Messenger) RN - 0 (SOX2 protein, human) RN - 0 (SOXB1 Transcription Factors) SB - IM RIN - FEBS Open Bio. 2023 Sep 19;:. PMID: 37724913 MH - Cell Differentiation/*genetics MH - Cell Line, Tumor MH - Cell Movement/genetics MH - Cell Proliferation/genetics MH - Drug Resistance, Neoplasm MH - Epithelial-Mesenchymal Transition MH - Humans MH - Neoplastic Stem Cells/metabolism/*pathology MH - RNA Stability MH - RNA, Long Noncoding/genetics/*metabolism MH - RNA, Messenger/genetics MH - SOXB1 Transcription Factors/*genetics/metabolism MH - Spheroids, Cellular MH - Stomach Neoplasms/*genetics/metabolism/pathology PMC - PMC6609564 OTO - NOTNLM OT - Sox2 OT - MALAT1 OT - chemosensitivity OT - gastric cancer OT - radiosensitivity OT - stemness COIS- The authors declare no conflict of interest. EDAT- 2019/05/01 06:00 MHDA- 2020/02/19 06:00 PMCR- 2019/06/02 CRDT- 2019/05/01 06:00 PHST- 2019/03/13 00:00 [received] PHST- 2019/04/15 00:00 [revised] PHST- 2019/04/25 00:00 [accepted] PHST- 2019/05/01 06:00 [pubmed] PHST- 2020/02/19 06:00 [medline] PHST- 2019/05/01 06:00 [entrez] PHST- 2019/06/02 00:00 [pmc-release] AID - FEB412649 [pii] AID - 10.1002/2211-5463.12649 [doi] PST - ppublish SO - FEBS Open Bio. 2019 Jul;9(7):1212-1222. doi: 10.1002/2211-5463.12649. Epub 2019 Jun 2.