PMID- 29416638 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20191120 IS - 1949-2553 (Electronic) IS - 1949-2553 (Linking) VI - 9 IP - 1 DP - 2018 Jan 2 TI - Nicotine-enhanced stemness and epithelial-mesenchymal transition of human umbilical cord mesenchymal stem cells promote tumor formation and growth in nude mice. PG - 591-606 LID - 10.18632/oncotarget.22712 [doi] AB - Cigarette smoking is a well-known risk factor in the development and progression of malignant diseases. Nicotine, the major constituent in cigarette smoke, has also shown negative effects on stem cells. Mesenchymal stem cells (MSCs) have been widely demonstrated to migrate into tumors and play key roles in cancer progression. However, the mechanisms by which nicotine impacts MSCs and tumorigenesis of lung cancer are still undetermined. In this study we investigated the effects of nicotine on human umbilical cord mesenchymal stem cells (hUC-MSCs) and the impacts of nicotine-treated hUC-MSCs on tumor formation and progression. We found that nicotine has a toxic effect on hUC-MSCs and changes the morphology, inhibits proliferation and promotes apoptosis of hUC-MSCs in a dose-dependent manner. Nicotine-treated hUC-MSCs produce higher level of IL-6. Moreover, nicotine promotes migration, stemness and epithelial-mesenchymal transition (EMT) of hUC-MSCs by inhibiting E-cadherin expression and upregulating mesenchymal markers such as N-cadherin and Vimentin, leading to the induction of stem cell markers Sox2, Nanog, Sall4, Oct4 and CD44. Migration and proliferation of non-small cell lung cancer A549 cells and breast cancer MCF-7 cells are promoted after their coculture with nicotine-treated hUC-MSCs in a cell-cell contact-independent manner. Furthermore, nicotine-treated hUC-MSCs promote tumor formation and growth of A549 cells in nude mice. These studies demonstrated that the enhanced stemness and EMT of hUC-MSCs induced by nicotine are critical for the development of tobacco-related cancers. FAU - Li, Tao AU - Li T AD - School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212001, P.R. China. FAU - Zhang, Jun AU - Zhang J AD - Department of Laboratory, The Affiliated Hospital of Yangzhou University, Yangzhou, Jiangsu 225001, P.R. China. FAU - Zhang, Jiahui AU - Zhang J AD - School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212001, P.R. China. FAU - Zhang, Nannan AU - Zhang N AD - School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212001, P.R. China. FAU - Zeng, Yang AU - Zeng Y AD - Vaccine and Immunotherapy Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA. FAU - Tang, Shengnan AU - Tang S AD - School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212001, P.R. China. FAU - Tao, Zehua AU - Tao Z AD - School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212001, P.R. China. FAU - Qu, Xiying AU - Qu X AD - Vaccine and Immunotherapy Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA. FAU - Jia, Jue AU - Jia J AD - The Affiliated Hospital of Jiangsu University, Zhenjiang, Jiangsu 212001, P.R. China. FAU - Zhu, Wei AU - Zhu W AD - School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212001, P.R. China. FAU - Sun, Xiaochun AU - Sun X AD - School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212001, P.R. China. FAU - Chen, Huabiao AU - Chen H AD - School of Medicine, Jiangsu University, Zhenjiang, Jiangsu 212001, P.R. China. AD - Vaccine and Immunotherapy Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114, USA. LA - eng PT - Journal Article DEP - 20171127 PL - United States TA - Oncotarget JT - Oncotarget JID - 101532965 PMC - PMC5787492 OTO - NOTNLM OT - EMT OT - cancer OT - mesenchymal stem cells OT - nicotine OT - stemness COIS- CONFLICTS OF INTEREST The authors declare that they have no competing interests. EDAT- 2018/02/09 06:00 MHDA- 2018/02/09 06:01 PMCR- 2018/01/02 CRDT- 2018/02/09 06:00 PHST- 2017/03/21 00:00 [received] PHST- 2017/11/01 00:00 [accepted] PHST- 2018/02/09 06:00 [entrez] PHST- 2018/02/09 06:00 [pubmed] PHST- 2018/02/09 06:01 [medline] PHST- 2018/01/02 00:00 [pmc-release] AID - 22712 [pii] AID - 10.18632/oncotarget.22712 [doi] PST - epublish SO - Oncotarget. 2017 Nov 27;9(1):591-606. doi: 10.18632/oncotarget.22712. eCollection 2018 Jan 2.