PMID- 34383046 OWN - NLM STAT- MEDLINE DCOM- 20211026 LR - 20220531 IS - 1477-9137 (Electronic) IS - 0021-9533 (Print) IS - 0021-9533 (Linking) VI - 134 IP - 17 DP - 2021 Sep 1 TI - Lamin regulates the dietary restriction response via the mTOR pathway in Caenorhabditis elegans. LID - 10.1242/jcs.258428 [doi] LID - jcs258428 AB - Animals subjected to dietary restriction (DR) have reduced body size, low fecundity, slower development, lower fat content and longer life span. We identified lamin as a regulator of multiple dietary restriction phenotypes. Downregulation of lmn-1, the single Caenorhabditis elegans lamin gene, increased animal size and fat content specifically in DR animals. The LMN-1 protein acts in the mTOR pathway, upstream of RAPTOR and S6 kinase beta1 (S6K), a key component of and target of the mechanistic target of rapamycin (mTOR) complex 1 (mTORC1), respectively. DR excludes the mTORC1 activator RAGC-1 from the nucleus. Downregulation of lmn-1 restores RAGC-1 to the nucleus, a necessary step for the activation of the mTOR pathway. These findings further link lamin to metabolic regulation. CI - (c) 2021. Published by The Company of Biologists Ltd. FAU - Charar, Chayki AU - Charar C AUID- ORCID: 0000-0001-6268-2228 AD - The School of Dental Medicine, The Faculty of Medicine, Tel Aviv University, 69978 Tel Aviv, Israel. AD - The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, 9190401 Jerusalem, Israel. FAU - Metsuyanim-Cohen, Sally AU - Metsuyanim-Cohen S AD - The School of Dental Medicine, The Faculty of Medicine, Tel Aviv University, 69978 Tel Aviv, Israel. FAU - Bar, Daniel Z AU - Bar DZ AUID- ORCID: 0000-0003-4074-2802 AD - The School of Dental Medicine, The Faculty of Medicine, Tel Aviv University, 69978 Tel Aviv, Israel. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210906 PL - England TA - J Cell Sci JT - Journal of cell science JID - 0052457 RN - 0 (Caenorhabditis elegans Proteins) RN - 0 (LMN-1 protein, C elegans) RN - 0 (Laminin) RN - 0 (Lamins) RN - EC 2.7.11.1 (Mechanistic Target of Rapamycin Complex 1) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) SB - IM MH - Animals MH - *Caenorhabditis elegans/genetics MH - *Caenorhabditis elegans Proteins/genetics MH - Laminin MH - Lamins MH - Longevity/genetics MH - Mechanistic Target of Rapamycin Complex 1/genetics MH - TOR Serine-Threonine Kinases/genetics PMC - PMC8445603 OTO - NOTNLM OT - Caenorhabditis elegans OT - Dietary restriction OT - Lamin OT - mTOR COIS- Competing interests The authors declare no competing or financial interests. EDAT- 2021/08/13 06:00 MHDA- 2021/10/27 06:00 PMCR- 2021/09/06 CRDT- 2021/08/12 12:27 PHST- 2021/02/04 00:00 [received] PHST- 2021/07/30 00:00 [accepted] PHST- 2021/08/13 06:00 [pubmed] PHST- 2021/10/27 06:00 [medline] PHST- 2021/08/12 12:27 [entrez] PHST- 2021/09/06 00:00 [pmc-release] AID - 272061 [pii] AID - JCS258428 [pii] AID - 10.1242/jcs.258428 [doi] PST - ppublish SO - J Cell Sci. 2021 Sep 1;134(17):jcs258428. doi: 10.1242/jcs.258428. Epub 2021 Sep 6.