Architecture of androgen receptor pathways amplifying glucagon-like peptide-1 insulinotropic action in male pancreatic β cells
File(s)1-s2.0-S2211124723005405-main.pdf (5.32 MB)
Published version
Author(s)
Type
Journal Article
Abstract
Male mice lacking the androgen receptor (AR) in pancreatic β cells exhibit blunted glucose-stimulated insulin secretion (GSIS), leading to hyperglycemia. Testosterone activates an extranuclear AR in β cells to amplify glucagon-like peptide-1 (GLP-1) insulinotropic action. Here, we examined the architecture of AR targets that regulate GLP-1 insulinotropic action in male β cells. Testosterone cooperates with GLP-1 to enhance cAMP production at the plasma membrane and endosomes via: (1) increased mitochondrial production of CO2, activating the HCO3--sensitive soluble adenylate cyclase; and (2) increased Gαs recruitment to GLP-1 receptor and AR complexes, activating transmembrane adenylate cyclase. Additionally, testosterone enhances GSIS in human islets via a focal adhesion kinase/SRC/phosphatidylinositol 3-kinase/mammalian target of rapamycin complex 2 actin remodeling cascade. We describe the testosterone-stimulated AR interactome, transcriptome, proteome, and metabolome that contribute to these effects. This study identifies AR genomic and non-genomic actions that enhance GLP-1-stimulated insulin exocytosis in male β cells.
Date Issued
2023-05-30
Date Acceptance
2023-05-03
Citation
Cell Reports, 2023, 42 (5), pp.1-29
ISSN
2211-1247
Publisher
Elsevier
Start Page
1
End Page
29
Journal / Book Title
Cell Reports
Volume
42
Issue
5
Copyright Statement
© 2023 The Author(s). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
Identifier
https://www.ncbi.nlm.nih.gov/pubmed/37200193
PII: S2211-1247(23)00540-5
Subjects
Adenylyl Cyclases
Animals
Glucagon-Like Peptide 1
Glucose
Humans
Insulin
Insulin-Secreting Cells
Islets of Langerhans
Male
Mammals
Mice
Peptide Fragments
Receptors, Androgen
Testosterone
androgen receptor
cAMP
CP: Metabolism
GLP-1
insulin secretion
islet
mitochondria
mTORC2
soluble adenylate cyclase
testosterone
β cells
Publication Status
Published
Coverage Spatial
United States
Article Number
112529
Date Publish Online
2023-05-17