PMID- 23686339 OWN - NLM STAT- MEDLINE DCOM- 20130627 LR - 20211203 IS - 1095-9203 (Electronic) IS - 0036-8075 (Print) IS - 0036-8075 (Linking) VI - 340 IP - 6138 DP - 2013 Jun 14 TI - Targeting isoprenylcysteine methylation ameliorates disease in a mouse model of progeria. PG - 1330-3 LID - 10.1126/science.1238880 [doi] AB - Several progeroid disorders, including Hutchinson-Gilford progeria syndrome (HGPS) and restrictive dermopathy (ZMPSTE24 deficiency), arise when a farnesylated and methylated form of prelamin A accumulates at the nuclear envelope. Here, we found that a hypomorphic allele of isoprenylcysteine carboxyl methyltransferase (ICMT) increased body weight, normalized grip strength, and prevented bone fractures and death in Zmpste24-deficient mice. The reduced ICMT activity caused prelamin A mislocalization within the nucleus and triggered prelamin A-dependent activation of AKT-mammalian target of rapamycin (mTOR) signaling, which abolished the premature senescence of Zmpste24-deficient fibroblasts. ICMT inhibition increased AKT-mTOR signaling and proliferation and delayed senescence in human HGPS fibroblasts but did not reduce the levels of misshapen nuclei in mouse and human cells. Thus, targeting ICMT might be useful for treating prelamin A-associated progeroid disorders. FAU - Ibrahim, Mohamed X AU - Ibrahim MX AD - Sahlgrenska Cancer Center, Department of Molecular and Clinical Medicine, Institute of Medicine, Sahlgrenska Academy, University of Gothenburg, S-41390 Gothenburg, Sweden. FAU - Sayin, Volkan I AU - Sayin VI FAU - Akula, Murali K AU - Akula MK FAU - Liu, Meng AU - Liu M FAU - Fong, Loren G AU - Fong LG FAU - Young, Stephen G AU - Young SG FAU - Bergo, Martin O AU - Bergo MO LA - eng GR - P01 HL090553/HL/NHLBI NIH HHS/United States GR - R01 AG035626/AG/NIA NIH HHS/United States GR - R01 HL086683/HL/NHLBI NIH HHS/United States GR - R01 HL089781/HL/NHLBI NIH HHS/United States PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130516 PL - United States TA - Science JT - Science (New York, N.Y.) JID - 0404511 RN - 0 (Lamin Type A) RN - 0 (Membrane Proteins) RN - 0 (Nuclear Proteins) RN - 0 (Protein Precursors) RN - 0 (prelamin A) RN - EC 2.1.1.- (Protein Methyltransferases) RN - EC 2.1.1.100 (protein-S-isoprenylcysteine O-methyltransferase) RN - EC 2.7.1.1 (mTOR protein, mouse) RN - EC 2.7.11.1 (TOR Serine-Threonine Kinases) RN - EC 3.4.24.- (Metalloendopeptidases) RN - EC 3.4.24.- (Zmpste24 protein, mouse) SB - IM CIN - Science. 2013 Jun 14;340(6138):1299-300. PMID: 23766322 MH - Animals MH - Cell Nucleus/metabolism MH - Cellular Senescence/genetics MH - Disease Models, Animal MH - Fibroblasts/metabolism MH - *Gene Knockout Techniques MH - Hand Strength MH - Humans MH - Lamin Type A MH - Membrane Proteins/genetics/*metabolism MH - Metalloendopeptidases/genetics/*metabolism MH - Methylation MH - Mice MH - Mice, Mutant Strains MH - Nuclear Proteins/metabolism MH - Progeria/physiopathology/*therapy MH - Protein Methyltransferases/*genetics/*metabolism MH - Protein Precursors/metabolism MH - TOR Serine-Threonine Kinases/metabolism MH - Weight Gain/genetics PMC - PMC4295631 MID - NIHMS652465 EDAT- 2013/05/21 06:00 MHDA- 2013/06/29 06:00 PMCR- 2015/01/15 CRDT- 2013/05/21 06:00 PHST- 2013/05/21 06:00 [entrez] PHST- 2013/05/21 06:00 [pubmed] PHST- 2013/06/29 06:00 [medline] PHST- 2015/01/15 00:00 [pmc-release] AID - science.1238880 [pii] AID - 10.1126/science.1238880 [doi] PST - ppublish SO - Science. 2013 Jun 14;340(6138):1330-3. doi: 10.1126/science.1238880. Epub 2013 May 16.