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Induction of Murine Intestinal Inflammation by Adoptive Transfer of Effector CD4+CD45RBhigh T Cells into Immunodeficient Mice
Published on: April 21, 2015
NPSR1 promotes chronic colitis through regulating CD4+ T cell effector function in inflammatory bowel disease
Yanan Peng1, Liping Chen1, Xiaojia Chen1
1Department of Gastroenterology, Zhongnan Hospital of Wuhan University, Wuhan, China; Hubei Provincial Clinical Research Center for Intestinal and Colorectal Diseases, Hubei Key Laboratory of Intestinal and Colorectal Diseases, Wuhan, China.
Neuropeptide S receptor 1 (NPSR1) drives inflammatory bowel disease (IBD) by enhancing CD4+ T cell responses. Downregulating NPSR1 in IBD models reduced inflammation and T cell activity, suggesting NPSR1 as a therapeutic target.
Area of Science:
- Immunology
- Gastroenterology
Background:
- Neuropeptide S receptor 1 (NPSR1) is linked to inflammatory bowel disease (IBD) onset.
- The precise mechanism of NPSR1 in IBD pathogenesis is not fully understood.
Purpose of the Study:
- To investigate the role of NPSR1 in regulating CD4+ T cell effector function in IBD.
- To explore NPSR1's impact on colitis and associated immune responses.
Main Methods:
- Analysis of patient samples (blood, biopsies) and a mouse colitis model (DSS-induced).
- In vitro and in vivo NPSR1 knockdown experiments.
- Assessment of NPSR1 expression and CD4+ T cell markers via qPCR, immunoblotting, flow cytometry, and immunohistochemistry.
- Evaluation of CD4+ T cell functions including proliferation, apoptosis, and migration.
Main Results:
- NPSR1 expression was elevated in IBD intestinal tissues.
- NPSR1 downregulation protected against DSS-induced colitis and reduced CD4+ T cell-mediated inflammation.
- NPSR1 knockdown inhibited CD4+ T cell differentiation, proliferation, and survival, while affecting T cell migration.
Conclusions:
- NPSR1 promotes chronic colitis by modulating CD4+ T cell effector functions in IBD.
- NPSR1 represents a potential therapeutic target for IBD treatment.
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