Insulin and IGF-1 have both overlapping and distinct effects on CD4⁺ T cell mitochondria, metabolism, and function.

ABSTRACT: Insulin and insulin-like growth factor 1 (IGF-1) are metabolic hormones with known effects on CD4⁺ T cells through insulin receptor (IR) and IGF-1 receptor (IGF-1R) signaling. Here, we describe specific and distinct roles for these hormones and receptors. We have found that IGF-1R, but not IR, expression is increased following CD4⁺ T cell activation or following differentiation toward Th17 cells. Although both insulin and IGF-1 increase the metabolism of CD4⁺ T cells, insulin has a more potent effect. However, IGF-1 has a unique role and acts specifically on Th17 cells to increase IL-17 production and Th17 cell metabolism. Furthermore, IGF-1 decreases mitochondrial membrane potential and mitochondrial reactive oxygen species (mROS) in Th17 cells, providing

SUBMITTER: Kiernan K 

PROVIDER: S-EPMC10881490 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature