Adiponectin Receptor 1 Variants Contribute to Hypertrophic Cardiomyopathy That Can Be Reversed by Rapamycin
Authors
Affiliations
Hypertrophic cardiomyopathy (HCM) is a heterogeneous genetic heart muscle disease characterized by hypertrophy with preserved or increased ejection fraction in the absence of secondary causes. However, recent studies have demonstrated that a substantial proportion of individuals with HCM also have comorbid diabetes mellitus (~10%). Whether genetic variants may contribute a combined phenotype of HCM and diabetes mellitus is not known. Here, using next-generation sequencing methods, we identified novel and ultrarare variants in adiponectin receptor 1 () as risk factors for HCM. Biochemical studies showed that variants dysregulate glucose and lipid metabolism and cause cardiac hypertrophy through the p38/mammalian target of rapamycin and/or extracellular signal-regulated kinase pathways. A transgenic mouse model expressing an variant displayed cardiomyopathy that recapitulated the cellular findings, and these features were rescued by rapamycin. Our results provide the first evidence that variants can cause HCM and provide new insights into regulation.
Bose K, Agrawal R, Sairam T, Mil J, Butler M, Dhandapany P iScience. 2024; 27(3):109075.
PMID: 38361607 PMC: 10867644. DOI: 10.1016/j.isci.2024.109075.
Genetics and epigenetics of diabetes and its complications in India.
Priyadarshini A, Madan R, Das S Hum Genet. 2023; 143(1):1-17.
PMID: 37999799 DOI: 10.1007/s00439-023-02616-3.
Sarcomeric gene variants among Indians with hypertrophic cardiomyopathy: A scoping review.
Koshy L, Ganapathi S, Jeemon P, Madhuma M, Vysakh Y, Lakshmikanth L Indian J Med Res. 2023; 158(2):119-135.
PMID: 37787257 PMC: 10645028. DOI: 10.4103/ijmr.ijmr_3567_21.
Zhang J, Li Y, Liu J, Han F, Shi J, Wu G iScience. 2022; 25(10):105236.
PMID: 36274941 PMC: 9579505. DOI: 10.1016/j.isci.2022.105236.
Jex N, Chowdhary A, Thirunavukarasu S, Procter H, Sengupta A, Natarajan P Diabetes Care. 2022; 45(8):1852-1862.
PMID: 35789379 PMC: 9346996. DOI: 10.2337/dc22-0083.