alexa TCR signaling and environment affect vasoactive intestinal peptide receptor-1 (VPAC-1) expression in primary mouse CD4 T cells.
Neurology

Neurology

Journal of Clinical & Experimental Neuroimmunology

Author(s): VomhofDeKrey EE, Hermann RJ, Palmer MF, Benton KD, Sandy AR

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Strict regulation of T cell function is imperative to control adaptive immunity, and dysregulation of T cell activation can contribute to infectious and autoimmune diseases. Vasoactive intestinal peptide receptor-1 (VPAC-1), an anti-inflammatory G-protein coupled receptor, has been reported to be downregulated during T cell activation. However, the regulatory mechanisms controlling the expression of VPAC-1 in T cells are not well understood. Therefore, mouse splenic CD4 T cells were treated in complete media+/-anti-CD3 for 24h, total RNA isolated and VPAC-1 levels measured by qPCR. Surprisingly, we discovered that T cells incubated in complete media steadily upregulated VPAC-1 mRNA levels over time (24h). Importantly, CD4 T cells isolated from blood also showed elevated VPAC-1 expression compared to splenic T cells. Collectively, these data support that the vascular environment positively influences VPAC-1 mRNA expression that is negatively regulated by TCR signaling. This research was supported by a national service award (1KO1 DK064828) to G.D., the Center for Protease Research (2P20RR015566), and INBRE (P20 RR016741).

This article was published in Brain Behav Immun. and referenced in Journal of Clinical & Experimental Neuroimmunology

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