Corin Deficiency Alters Adipose Tissue Phenotype and Impairs Thermogenesis in Mice.
Xianrui ZhangWenguo LiTiantian ZhouMeng LiuQingyu WuNingzheng DongPublished in: Biology (2022)
Atrial natriuretic peptide (ANP) is a key regulator in body fluid balance and cardiovascular biology. In addition to its role in enhancing natriuresis and vasodilation, ANP increases lipolysis and thermogenesis in adipose tissue. Corin is a protease responsible for ANP activation. It remains unknown if corin has a role in regulating adipose tissue function. Here, we examined adipose tissue morphology and function in corin knockout (KO) mice. We observed increased weights and cell sizes in white adipose tissue (WAT), decreased levels of uncoupling protein 1 (Ucp1), a brown adipocyte marker in WAT and brown adipose tissue (BAT), and suppressed thermogenic gene expression in BAT from corin KO mice. At regular room temperature, corin KO and wild-type mice had similar metabolic rates. Upon cold exposure at 4 °C, corin KO mice exhibited impaired thermogenic responses and developed hypothermia. In BAT from corin KO mice, the signaling pathway of p38 mitogen-activated protein kinase, peroxisome proliferator-activated receptor c coactivator 1a, and Ucp1 was impaired. In cell culture, ANP treatment increased Ucp1 expression in BAT-derived adipocytes from corin KO mice. These data indicate that corin mediated-ANP activation is an important hormonal mechanism in regulating adipose tissue function and body temperature upon cold exposure in mice.
Keyphrases
- adipose tissue
- insulin resistance
- high fat diet induced
- wild type
- high fat diet
- gene expression
- signaling pathway
- room temperature
- heart failure
- type diabetes
- stem cells
- poor prognosis
- left ventricular
- mesenchymal stem cells
- oxidative stress
- cell therapy
- metabolic syndrome
- atrial fibrillation
- binding protein
- nitric oxide
- replacement therapy
- artificial intelligence
- left atrial
- long non coding rna
- electronic health record
- tyrosine kinase
- mitral valve