PMID- 32966896 OWN - NLM STAT- MEDLINE DCOM- 20210526 LR - 20211204 IS - 1768-3254 (Electronic) IS - 0223-5234 (Linking) VI - 208 DP - 2020 Dec 15 TI - Research progress of mTOR inhibitors. PG - 112820 LID - S0223-5234(20)30792-3 [pii] LID - 10.1016/j.ejmech.2020.112820 [doi] AB - Mammalian target of rapamycin (mTOR) is a highly conserved Serine/Threonine (Ser/Thr) protein kinase, which belongs to phosphatidylinositol-3-kinase-related kinase (PIKK) protein family. mTOR exists as two types of protein complex: mTORC1 and mTORC2, which act as central controller regulating processes of cell metabolism, growth, proliferation, survival and autophagy. The mTOR inhibitors block mTOR signaling pathway, producing anti-inflammatory, anti-proliferative, autophagy and apoptosis induction effects, thus mTOR inhibitors are mainly used in cancer therapy. At present, mTOR inhibitors are divided into four categories: Antibiotic allosteric mTOR inhibitors (first generation), ATP-competitive mTOR inhibitors (second generation), mTOR/PI3K dual inhibitors (second generation) and other new mTOR inhibitors (third generation). In this article, these four categories of mTOR inhibitors and their structures, properties and some clinical researches will be introduced. Among them, we focus on the structure of mTOR inhibitors and try to analyze the structure-activity relationship. mTOR inhibitors are classified according to their chemical structure and their contents are introduced systematically. Moreover, some natural products that have direct or indirect mTOR inhibitory activities are introduced together. In this article, we analyzed the target, binding mode and structure-activity relationship of each generation of mTOR inhibitors and proposed two hypothetic scaffolds (the inverted-Y-shape scaffold and the C-shape scaffold) for the second generation of mTOR inhibitors. These findings may provide some help or reference for drug designing, drug modification or the future development of mTOR inhibitor. CI - Copyright (c) 2020 Elsevier Masson SAS. All rights reserved. FAU - Chen, Yifan AU - Chen Y AD - School of Pharmaceutical Sciences, Jilin University, Changchun, 130021, China. FAU - Zhou, Xiaoping AU - Zhou X AD - School of Pharmaceutical Sciences, Jilin University, Changchun, 130021, China. Electronic address: zhouxp@jlu.edu.cn. LA - eng PT - Journal Article PT - Review DEP - 20200913 PL - France TA - Eur J Med Chem JT - European journal of medicinal chemistry JID - 0420510 RN - 0 (Protein Kinase Inhibitors) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) SB - IM MH - Animals MH - Humans MH - Molecular Structure MH - Protein Kinase Inhibitors/chemistry/metabolism/*therapeutic use MH - Signal Transduction/drug effects MH - Structure-Activity Relationship MH - TOR Serine-Threonine Kinases/*antagonists & inhibitors/metabolism OTO - NOTNLM OT - Anticancer OT - Drug design OT - mTOR OT - mTOR inhibitor COIS- Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. EDAT- 2020/09/24 06:00 MHDA- 2021/05/27 06:00 CRDT- 2020/09/23 20:05 PHST- 2020/07/17 00:00 [received] PHST- 2020/08/16 00:00 [revised] PHST- 2020/09/03 00:00 [accepted] PHST- 2020/09/24 06:00 [pubmed] PHST- 2021/05/27 06:00 [medline] PHST- 2020/09/23 20:05 [entrez] AID - S0223-5234(20)30792-3 [pii] AID - 10.1016/j.ejmech.2020.112820 [doi] PST - ppublish SO - Eur J Med Chem. 2020 Dec 15;208:112820. doi: 10.1016/j.ejmech.2020.112820. Epub 2020 Sep 13.