ArticleThe Journal of clinical investigation2012
Divergent requirement for Gαs and cAMP in the differentiation and inflammatory profile of distinct mouse Th subsets.
Article in The Journal of clinical investigation, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
39 citing papers in PubMed, 60 citations in OpenAlex.
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Corrections and comments
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Authors and funding
14 authors at 4 institutions in 1 country.
Funding
Abstract
cAMP, the intracellular signaling molecule produced in response to GPCR signaling, has long been recognized as an immunosuppressive agent that inhibits T cell receptor activation and T cell function. However, recent studies show that cAMP also promotes T cell-mediated immunity. Central to cAMP production downstream of GPCR activation is the trimeric G protein Gs. In order to reconcile the reports of divergent effects of cAMP in T cells and to define the direct effect of cAMP in T cells, we engineered mice in which the stimulatory Gα subunit of Gs (Gαs) could be deleted in T cells using CD4-Cre (Gnas(ΔCD4)). Gnas(ΔCD4) CD4(+) T cells had reduced cAMP accumulation and Ca2(+) influx. In vitro and in vivo, Gnas(ΔCD4) CD4(+) T cells displayed impaired differentiation to specific Th subsets: Th17 and Th1 cells were reduced or absent, but Th2 and regulatory T cells were unaffected. Furthermore, Gnas(ΔCD4) CD4(+) T cells failed to provoke colitis in an adoptive transfer model, indicating reduced inflammatory function. Restoration of cAMP levels rescued the impaired phenotype of Gnas(ΔCD4) CD4(+) T cells, reinstated the PKA-dependent influx of Ca2(+), and enhanced the ability of these cells to induce colitis. Our findings thus define an important role for cAMP in the differentiation of Th subsets and their subsequent inflammatory responses, and provide evidence that altering cAMP levels in CD4(+) T cells could provide an immunomodulatory approach targeting specific Th subsets.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.