RT Journal Article T1 Complement Factor C3 Methylation and mRNA Expression Is Associated to BMI and Insulin Resistance in Obesity. A1 Castellano-Castillo, Daniel A1 Moreno-Indias, Isabel A1 Fernandez-Garcia, Jose Carlos A1 Clemente-Postigo, Mercedes A1 Castro-Cabezas, Manuel A1 Tinahones, Francisco José A1 Queipo-Ortuño, María Isabel A1 Cardona, Fernando K1 ASP K1 C3 K1 DNA methylation K1 complement factor K1 insulin resistance K1 obesity AB Epigenetic marks, and especially DNA methylation, are becoming an important factor in obesity, which could help to explain its etiology and associated comorbidities. Adipose tissue, now considered as an important endocrine organ, produces complement system factors. Complement component 3 (C3) turns out to be an important protein in metabolic disorders, via either inflammation or the C3 subproduct acylation stimulating protein (ASP) which directly stimulates lipid storage. In this study, we analyze C3 DNA methylation in adipose tissue from subjects with a different grade of obesity. Adipose tissue samples were collected from subjects with a different degree of obesity determined by their body mass index (BMI) as: Overweight subjects (BMI ≥ 25 and SN 2073-4425 YR 2018 FD 2018-08-13 LK https://hdl.handle.net/10668/26500 UL https://hdl.handle.net/10668/26500 LA en DS RISalud RD Apr 11, 2025