PMID- 30031008 OWN - NLM STAT- MEDLINE DCOM- 20181211 LR - 20181211 IS - 1872-6216 (Electronic) IS - 0047-6374 (Linking) VI - 175 DP - 2018 Oct TI - Stem cell rejuvenation and the role of autophagy in age retardation by caloric restriction: An update. PG - 46-54 LID - S0047-6374(18)30029-0 [pii] LID - 10.1016/j.mad.2018.07.005 [doi] AB - Stem cells being pluripotent in nature can differentiate into a wide array of specific cells and asymmetrically divide to produce new ones but may undergo aging by themselves. Aging has both quantitative and qualitative effects on stem cells, and could eventually restrain them from replenishing into progenitor cells. Reactive oxygen species (ROS) accumulated in the aging cells could not only block the cell cycle but also affect autophagy by damaging the mitochondria. Autophagy could eliminate redundant production of ROS in aging stem cells and helps to maintain the proliferation capacity by restraining the expression of p16(INK4a). Current studies showed that improving autophagy could restore the regenerative ability of aging stem cells. Therefore, it is important for an organism to maintain the appropriate autophagy. Caloric restriction (CR) was shown to retard the stem cell aging by a certain basic level of autophagy, suggesting that CR was an effective way to extend longevity in mammals. However, little is known about the underlying mechanisms. In this review, we tried to explore the molecular mechanisms on how CR induces appropriate autophagy to restore aging stem cell regenerative ability. CI - Copyright (c) 2018 Elsevier B.V. All rights reserved. FAU - Bi, Shanrong AU - Bi S AD - The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, China. FAU - Wang, Hanyu AU - Wang H AD - The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, China. FAU - Kuang, Weihong AU - Kuang W AD - The First Affiliated Hospital, Guangzhou University of Chinese Medicine, Guangzhou, China. Electronic address: kwh@gzucm.edu.cn. LA - eng PT - Journal Article PT - Review DEP - 20180718 PL - Ireland TA - Mech Ageing Dev JT - Mechanisms of ageing and development JID - 0347227 RN - 0 (Reactive Oxygen Species) SB - IM MH - Age Factors MH - Aging/*metabolism/pathology MH - Animals MH - *Autophagy MH - *Caloric Restriction MH - *Cell Proliferation MH - *Cell Self Renewal MH - *Energy Metabolism MH - Humans MH - Oxidative Stress MH - Reactive Oxygen Species/metabolism MH - Rejuvenation MH - Signal Transduction MH - Stem Cells/*metabolism/pathology OTO - NOTNLM OT - Age retardation OT - Autophagy OT - Caloric restriction OT - ROS OT - Stem cell aging EDAT- 2018/07/22 06:00 MHDA- 2018/12/12 06:00 CRDT- 2018/07/22 06:00 PHST- 2018/02/10 00:00 [received] PHST- 2018/07/17 00:00 [revised] PHST- 2018/07/17 00:00 [accepted] PHST- 2018/07/22 06:00 [pubmed] PHST- 2018/12/12 06:00 [medline] PHST- 2018/07/22 06:00 [entrez] AID - S0047-6374(18)30029-0 [pii] AID - 10.1016/j.mad.2018.07.005 [doi] PST - ppublish SO - Mech Ageing Dev. 2018 Oct;175:46-54. doi: 10.1016/j.mad.2018.07.005. Epub 2018 Jul 18.