PMID- 32246301 OWN - NLM STAT- MEDLINE DCOM- 20210908 LR - 20211204 IS - 1573-6768 (Electronic) IS - 1389-5729 (Linking) VI - 21 IP - 5 DP - 2020 Oct TI - The roles of MTOR and miRNAs in endothelial cell senescence. PG - 517-530 LID - 10.1007/s10522-020-09876-w [doi] AB - Accumulation of senescent cells in vascular endothelium is known to contribute to vascular aging and increases the risk of developing cardiovascular diseases. The involvement of classical pathways such as p53/p21 and p16/pRB in cellular senescence are well described but there are emerging evidence supporting the increasingly important role of mammalian target of rapamycin (MTOR) as driver of cellular senescence via these pathways or other effector molecules. MicroRNAs (miRNAs) are a highly conserved group of small non-coding RNAs (18-25 nucleotides), instrumental in modulating the expression of target genes associated with various biological and cellular processes including cellular senescence. The inhibition of MTOR activity is predominantly linked to cellular senescence blunting and prolonged lifespan in model organisms. To date, known miRNAs regulating MTOR in endothelial cell senescence remain limited. Herein, this review discusses the roles of MTOR and MTOR-associated miRNAs in regulating endothelial cell senescence, including the crosstalk between MTOR Complex 1 (MTORC1) and cell cycle pathways and the emerging role of MTORC2 in cellular senescence. New insights on how MTOR and miRNAs coordinate underlying molecular mechanisms of endothelial senescence will provide deeper understanding and clarity to the complexity of the regulation of cellular senescence. FAU - Khor, Eng-Soon AU - Khor ES AD - Department of Pharmacology, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia. FAU - Wong, Pooi-Fong AU - Wong PF AUID- ORCID: 0000-0002-6705-2521 AD - Department of Pharmacology, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia. wongpf@um.edu.my. LA - eng PT - Journal Article PT - Review DEP - 20200403 PL - Netherlands TA - Biogerontology JT - Biogerontology JID - 100930043 RN - 0 (MicroRNAs) RN - EC 2.7.11.1 (Mechanistic Target of Rapamycin Complex 1) RN - EC 2.7.11.1 (Mechanistic Target of Rapamycin Complex 2) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) SB - IM MH - *Cellular Senescence MH - Endothelial Cells/*cytology MH - Humans MH - Mechanistic Target of Rapamycin Complex 1 MH - Mechanistic Target of Rapamycin Complex 2 MH - MicroRNAs/*physiology MH - TOR Serine-Threonine Kinases/*physiology OTO - NOTNLM OT - Endothelium OT - MTOR OT - MicroRNAs OT - Senescence OT - Vascular aging EDAT- 2020/04/05 06:00 MHDA- 2021/09/09 06:00 CRDT- 2020/04/05 06:00 PHST- 2020/01/21 00:00 [received] PHST- 2020/03/30 00:00 [accepted] PHST- 2020/04/05 06:00 [pubmed] PHST- 2021/09/09 06:00 [medline] PHST- 2020/04/05 06:00 [entrez] AID - 10.1007/s10522-020-09876-w [pii] AID - 10.1007/s10522-020-09876-w [doi] PST - ppublish SO - Biogerontology. 2020 Oct;21(5):517-530. doi: 10.1007/s10522-020-09876-w. Epub 2020 Apr 3.