2026-08-05T11:42:04Zhttps://repisalud.isciii.es/rest/oai/requestoai:repisalud.isciii.es:20.500.12105/179082024-09-21T18:49:07Zcom_20.500.12105_15322com_20.500.12105_2051col_20.500.12105_16927
Repisalud
author
Boughanem, Hatim
author
Cabrera-Mulero, Amanda
author
Millán-Gómez, Mercedes
author
Garrido-Sánchez, Lourdes
author
Cardona, Fernando
author
Tinahones, Francisco José
author
Moreno-Santos, Inmaculada
author
Macías-González, Manuel
2024-02-10T20:02:07Z
2024-02-10T20:02:07Z
2019-09-12
10.3390/genes10090706
2073-4425
Genes
http://hdl.handle.net/10668/14536
31547433
http://hdl.handle.net/20.500.12105/17908
Obesity is associated with several comorbid disorders, ranging from cardiovascular diseases to insulin resistance. In this context, visceral adipose tissue (VAT) seems to have a close connection with insulin resistance. In our study, we hypothesized that the expression profile of key adipogenic genes, such as proliferator-activated receptor γ type 2 (PPAR-γ2), CCAAT/enhancer-binding protein type α (C/EBP-α), and forkhead box protein class O type 1 (FOXO1) in VAT should shed light on their association with obesity-related insulin resistance. To test this idea, we studied the expression profile of C/EBP-α, FOXO1 and PPAR-γ2 in VAT from non-obese individuals, and low insulin (LIR-MO) and high insulin morbidly obese (HIR-MO) subjects, through a combination of RT-qPCR, co-immunoprecipitation, ELISA, Western blot analysis and EMSA assays. Our results show that C/EBP-α and PPAR-γ2 were down-expressed in HIR-MO individuals, while FOXO1 was overexpressed. In addition, the PPAR-γ2-RXR-α heterodimer showed weak activity and bound weakly to the putative IGFBP-2-PPRE promoter sequence in VAT from HIR-MO subjects when compared with LIR-MO individuals. These results show that PPAR-γ2, C/EBP-α, FOXO1 and IGFBP-2 have a close relationship with insulin resistance in VAT of morbidly obese individuals.
eng
C/EBP-α
FOXO1
IGFBP-2
PPAR-γ2
Insulin resistance
Obesity
Transcriptional Analysis of FOXO1, C/EBP-α and PPAR-γ2 Genes and Their Association with Obesity-Related Insulin Resistance.
research article