PMID- 36617414 OWN - NLM STAT- MEDLINE DCOM- 20230607 LR - 20230621 IS - 1423-0003 (Electronic) IS - 0304-324X (Linking) VI - 69 IP - 6 DP - 2023 TI - Why Is Rapamycin Not a Rapalog? PG - 657-659 LID - 10.1159/000528985 [doi] AB - Rapamycin (sirolimus) is an immunosuppressive drug approved by the Food and Drug Administration (FDA). It is also a leading candidate for targeting aging. Rapamycin and its analogs (everolimus, temsirolimus, ridaforolimus) inhibit the mammalian target of rapamycin (mTOR) kinase by binding to FK506-binding proteins (FKBP) and have a similar chemical structure that only differs in the functional group present at carbon-40. Analogs of rapamycin were developed to improve its pharmacological properties, such as low oral bioavailability and a long half-life. The analogs of rapamycin are referred to as "rapalogs." Rapamycin is the parent compound and should therewith not be called a "rapalog." CI - (c) 2023 The Author(s). Published by S. Karger AG, Basel. FAU - Kuerec, Ajla Hodzic AU - Kuerec AH AD - Healthy Longevity Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore, dr.ajlahodzic@gmail.com. AD - Centre for Healthy Longevity, @AgeSingapore, National University Health System, Singapore, Singapore, dr.ajlahodzic@gmail.com. FAU - Maier, Andrea B AU - Maier AB AD - Healthy Longevity Translational Research Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore. AD - Centre for Healthy Longevity, @AgeSingapore, National University Health System, Singapore, Singapore. AD - Vrije Universiteit Amsterdam, Department of Human Movement Sciences, @AgeAmsterdam, Amsterdam Movement Sciences, Amsterdam, The Netherlands. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20230107 PL - Switzerland TA - Gerontology JT - Gerontology JID - 7601655 RN - 0 (MTOR Inhibitors) RN - W36ZG6FT64 (Sirolimus) RN - 0 (Immunosuppressive Agents) RN - 9HW64Q8G6G (Everolimus) SB - IM MH - Humans MH - *MTOR Inhibitors MH - *Sirolimus/pharmacology MH - Immunosuppressive Agents/pharmacology MH - Everolimus OTO - NOTNLM OT - Aging OT - Mammalian target of rapamycin inhibitors OT - Sirolimus EDAT- 2023/01/09 06:00 MHDA- 2023/06/07 06:42 CRDT- 2023/01/08 18:23 PHST- 2022/09/07 00:00 [received] PHST- 2022/12/22 00:00 [accepted] PHST- 2023/06/07 06:42 [medline] PHST- 2023/01/09 06:00 [pubmed] PHST- 2023/01/08 18:23 [entrez] AID - 000528985 [pii] AID - 10.1159/000528985 [doi] PST - ppublish SO - Gerontology. 2023;69(6):657-659. doi: 10.1159/000528985. Epub 2023 Jan 7.