A Farnesyltransferase Inhibitor Improves Disease Phenotypes in Mice with a Hutchinson-Gilford Progeria Syndrome Mutation
Overview
Authors
Affiliations
Hutchinson-Gilford progeria syndrome (HGPS) is caused by the production of a truncated prelamin A, called progerin, which is farnesylated at its carboxyl terminus. Progerin is targeted to the nuclear envelope and causes misshapen nuclei. Protein farnesyltransferase inhibitors (FTI) mislocalize progerin away from the nuclear envelope and reduce the frequency of misshapen nuclei. To determine whether an FTI would ameliorate disease phenotypes in vivo, we created gene-targeted mice with an HGPS mutation (LmnaHG/+) and then examined the effect of an FTI on disease phenotypes. LmnaHG/+ mice exhibited phenotypes similar to those in human HGPS patients, including retarded growth, reduced amounts of adipose tissue, micrognathia, osteoporosis, and osteolytic lesions in bone. Osteolytic lesions in the ribs led to spontaneous bone fractures. Treatment with an FTI increased adipose tissue mass, improved body weight curves, reduced the number of rib fractures, and improved bone mineralization and bone cortical thickness. These studies suggest that FTIs could be useful for treating humans with HGPS.
Abutaleb N, Gao X, Bedapudi A, Choi L, Shores K, Kennedy C APL Bioeng. 2025; 9(1):016110.
PMID: 40027545 PMC: 11871533. DOI: 10.1063/5.0244026.
Kim P, Kim J, Heizer P, Jung H, Tu Y, Presnell A bioRxiv. 2024; .
PMID: 39554077 PMC: 11565845. DOI: 10.1101/2024.10.29.620896.
Nuclear envelope budding inhibition slows down progerin-induced aging process.
Wang X, Ma L, Lu D, Zhao G, Ren H, Lin Q Proc Natl Acad Sci U S A. 2024; 121(41):e2321378121.
PMID: 39352925 PMC: 11474064. DOI: 10.1073/pnas.2321378121.
Lipodystrophic Laminopathies: From Dunnigan Disease to Progeroid Syndromes.
Diaz-Lopez E, Sanchez-Iglesias S, Castro A, Cobelo-Gomez S, Prado-Morana T, Araujo-Vilar D Int J Mol Sci. 2024; 25(17).
PMID: 39273270 PMC: 11395136. DOI: 10.3390/ijms25179324.
Mechanotransduction of the vasculature in Hutchinson-Gilford Progeria Syndrome.
Shores K, Truskey G Front Physiol. 2024; 15:1464678.
PMID: 39239311 PMC: 11374724. DOI: 10.3389/fphys.2024.1464678.