Transcriptomics

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Eldecalcitol ameliorates diabetic osteoporosis and glucolipid metabolic disorder by promoting Treg cell differentiation through SOCE


ABSTRACT: Adaptive immunity plays a key role in osteoporosis in type 2 diabetes mellitus (T2DM); eldecalcitol (ED-71) is a novel active vitamin D analog, but its specific immunological mechanisms in ameliorating diabetic osteoporosis has not been well defined. In a T2DM mouse model, ED-71 attenuated bone loss and marrow adiposity. Simultaneously, it rectified imbalanced glucose homeostasis and dyslipidemia, ameliorated pancreatic β-cell damage and hepatic glycolipid metabolism disorder. Subsequently, in T2DM mice injected with CD25, we observed that the beneficial effects of ED-71 mentioned earlier were partially contingent on the Treg subsets ratio. Mechanistically, ED-71 promoted the differentiation of CD4+ T cells into Treg subsets, facilitating Ca2+ influx and the expression of ORAI1 and STIM1, pivotal proteins in store-operated Ca2+ entry (SOCE). The SOCE inhibitor, 2-APB, partially attenuated the positive effects of ED-71 observed in the above results. Together, these findings unveil ED-71 regulates SOCE-mediated Treg cell differentiation, accomplishing the dual purpose of simultaneously ameliorating diabetic osteoporosis and glucolipid metabolic disorders.

ORGANISM(S): Mus musculus

PROVIDER: GSE267853 | GEO | 2024/11/06

REPOSITORIES: GEO

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