PMID- 26768768 OWN - NLM STAT- MEDLINE DCOM- 20161026 LR - 20240213 IS - 1748-7838 (Electronic) IS - 1001-0602 (Print) IS - 1001-0602 (Linking) VI - 26 IP - 2 DP - 2016 Feb TI - SIRT6 safeguards human mesenchymal stem cells from oxidative stress by coactivating NRF2. PG - 190-205 LID - 10.1038/cr.2016.4 [doi] AB - SIRT6 belongs to the mammalian homologs of Sir2 histone NAD(+)-dependent deacylase family. In rodents, SIRT6 deficiency leads to aging-associated degeneration of mesodermal tissues. It remains unknown whether human SIRT6 has a direct role in maintaining the homeostasis of mesodermal tissues. To this end, we generated SIRT6 knockout human mesenchymal stem cells (hMSCs) by targeted gene editing. SIRT6-deficient hMSCs exhibited accelerated functional decay, a feature distinct from typical premature cellular senescence. Rather than compromised chromosomal stability, SIRT6-null hMSCs were predominately characterized by dysregulated redox metabolism and increased sensitivity to the oxidative stress. In addition, we found SIRT6 in a protein complex with both nuclear factor erythroid 2-related factor 2 (NRF2) and RNA polymerase II, which was required for the transactivation of NRF2-regulated antioxidant genes, including heme oxygenase 1 (HO-1). Overexpression of HO-1 in SIRT6-null hMSCs rescued premature cellular attrition. Our study uncovers a novel function of SIRT6 in maintaining hMSC homeostasis by serving as a NRF2 coactivator, which represents a new layer of regulation of oxidative stress-associated stem cell decay. FAU - Pan, Huize AU - Pan H AD - National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China. AD - University of Chinese Academy of Sciences, Beijing 100049, China. FAU - Guan, Di AU - Guan D AD - National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China. FAU - Liu, Xiaomeng AU - Liu X AD - Biodynamic Optical Imaging Center, College of Life Sciences, Peking University, Beijing 100871, China. FAU - Li, Jingyi AU - Li J AD - Biodynamic Optical Imaging Center, College of Life Sciences, Peking University, Beijing 100871, China. FAU - Wang, Lixia AU - Wang L AD - National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China. AD - FSU-CAS Innovation Institute, Foshan University, Foshan, Guangdong 528000, China. AD - State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China. FAU - Wu, Jun AU - Wu J AD - Gene Expression Laboratory, Salk Institute for Biological Studies, La Jolla, CA 92037, USA. FAU - Zhou, Junzhi AU - Zhou J AD - National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China. FAU - Zhang, Weizhou AU - Zhang W AD - Department of Pathology, Carver College of Medicine, University of Iowa, Iowa City, IA 52242, USA. FAU - Ren, Ruotong AU - Ren R AD - National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China. AD - FSU-CAS Innovation Institute, Foshan University, Foshan, Guangdong 528000, China. FAU - Zhang, Weiqi AU - Zhang W AD - National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China. AD - FSU-CAS Innovation Institute, Foshan University, Foshan, Guangdong 528000, China. FAU - Li, Ying AU - Li Y AD - National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China. AD - University of Chinese Academy of Sciences, Beijing 100049, China. FAU - Yang, Jiping AU - Yang J AD - National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China. FAU - Hao, Ying AU - Hao Y AD - FSU-CAS Innovation Institute, Foshan University, Foshan, Guangdong 528000, China. AD - State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China. FAU - Yuan, Tingting AU - Yuan T AD - National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China. FAU - Yuan, Guohong AU - Yuan G AD - National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China. FAU - Wang, Hu AU - Wang H AD - Institute of Aging Research, Leibniz Link Partner Group on Stem Cell Aging, Hangzhou Normal University School of Medicine, Hangzhou, Zhejiang 310036, China. FAU - Ju, Zhenyu AU - Ju Z AD - Institute of Aging Research, Leibniz Link Partner Group on Stem Cell Aging, Hangzhou Normal University School of Medicine, Hangzhou, Zhejiang 310036, China. FAU - Mao, Zhiyong AU - Mao Z AD - School of life sciences and technology, Tongji University, Shanghai 200092, China. FAU - Li, Jian AU - Li J AD - The Key Laboratory of Geriatrics, Beijing Hospital & Beijing Institute of Geriatrics, Ministry of Health, Beijing 100730, China. FAU - Qu, Jing AU - Qu J AD - State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China. FAU - Tang, Fuchou AU - Tang F AD - Biodynamic Optical Imaging Center, College of Life Sciences, Peking University, Beijing 100871, China. AD - Ministry of Education Key Laboratory of Cell Proliferation and Differentiation, Beijing 100871, China. AD - Peking-Tsinghua Center for Life Sciences, Peking University, Beijing 100871, China. AD - Center for Molecular and Translational Medicine, CMTM, Beijing 100101, China. FAU - Liu, Guang-Hui AU - Liu GH AD - National Laboratory of Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing 100101, China. AD - FSU-CAS Innovation Institute, Foshan University, Foshan, Guangdong 528000, China. AD - Center for Molecular and Translational Medicine, CMTM, Beijing 100101, China. AD - Beijing Institute for Brain Disorders, Beijing 100069, China. LA - eng GR - K99 CA158055/CA/NCI NIH HHS/United States GR - P30 CA086862/CA/NCI NIH HHS/United States GR - R00 CA158055/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20160115 PL - England TA - Cell Res JT - Cell research JID - 9425763 RN - 0 (Antioxidants) RN - 0 (NF-E2-Related Factor 2) RN - 0 (NFE2L2 protein, human) RN - EC 1.14.14.18 (Heme Oxygenase-1) RN - EC 2.7.7.- (RNA Polymerase II) RN - EC 3.5.1.- (SIRT6 protein, human) RN - EC 3.5.1.- (Sirtuins) SB - IM CIN - Cell Res. 2016 Feb;26(2):143-4. PMID: 26780861 MH - Animals MH - Antioxidants/metabolism MH - Cells, Cultured MH - Cellular Senescence/physiology MH - Heme Oxygenase-1/metabolism MH - Homeostasis/physiology MH - Humans MH - Male MH - Mesenchymal Stem Cells/*metabolism MH - Mice MH - Mice, Inbred NOD MH - Mice, Nude MH - Mice, SCID MH - NF-E2-Related Factor 2/*metabolism MH - Oxidative Stress/*physiology MH - RNA Polymerase II/metabolism MH - Sirtuins/*metabolism PMC - PMC4746611 EDAT- 2016/01/16 06:00 MHDA- 2016/10/27 06:00 PMCR- 2016/02/01 CRDT- 2016/01/16 06:00 PHST- 2015/07/09 00:00 [received] PHST- 2015/10/15 00:00 [revised] PHST- 2015/11/23 00:00 [accepted] PHST- 2016/01/16 06:00 [entrez] PHST- 2016/01/16 06:00 [pubmed] PHST- 2016/10/27 06:00 [medline] PHST- 2016/02/01 00:00 [pmc-release] AID - cr20164 [pii] AID - 10.1038/cr.2016.4 [doi] PST - ppublish SO - Cell Res. 2016 Feb;26(2):190-205. doi: 10.1038/cr.2016.4. Epub 2016 Jan 15.