生物
过继性细胞移植
效应器
癌症研究
表型
细胞生物学
免疫系统
免疫学
T细胞
生物化学
基因
作者
Andrew B. Leber,Raquel Hontecillas,Nuria Tubau-Juni,Victoria Zoccoli-Rodriguez,Matthew W. Hulver,Ryan P. McMillan,Kristin Eden,Irving C. Allen,Josep Bassaganya-Riera
出处
期刊:Journal of Immunology
[The American Association of Immunologists]
日期:2017-02-03
卷期号:198 (6): 2260-2268
被引量:34
标识
DOI:10.4049/jimmunol.1601547
摘要
Abstract Nucleotide oligomerization domain–like receptor X1 (NLRX1) has been implicated in viral response, cancer progression, and inflammatory disorders; however, its role as a dual modulator of CD4+ T cell function and metabolism has not been defined. The loss of NLRX1 results in increased disease severity, populations of Th1 and Th17 cells, and inflammatory markers (IFN-γ, TNF-α, and IL-17) in mice with dextran sodium sulfate–induced colitis. To further characterize this phenotype, we used in vitro CD4+ T cell–differentiation assays and show that NLRX1-deficient T cells have a greater ability to differentiate into an inflammatory phenotype and possess greater proliferation rates. Further, NLRX1−/− cells have a decreased responsiveness to immune checkpoint pathways and greater rates of lactate dehydrogenase activity. When metabolic effects of the knockout are impaired, NLRX1-deficient cells do not display significant differences in differentiation or proliferation. To confirm the role of NLRX1 specifically in T cells, we used an adoptive-transfer model of colitis. Rag2−/− mice receiving NLRX1−/− naive or effector T cells experienced increased disease activity and effector T cell populations, whereas no differences were observed between groups receiving wild-type or NLRX1−/− regulatory T cells. Metabolic effects of NLRX1 deficiency are observed in a CD4-specific knockout of NLRX1 within a Citrobacter rodentium model of colitis. The aerobic glycolytic preference in NLRX1−/− effector T cells is combined with a decreased sensitivity to immunosuppressive checkpoint pathways to provide greater proliferative capabilities and an inflammatory phenotype bias leading to increased disease severity.
科研通智能强力驱动
Strongly Powered by AbleSci AI