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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | O'Hagan, Kyle Leonard Chernoff, Jonathan Phee, Hyewon Choi, Jinyong Pryshchep, Olga |
| Description | Author Affiliation: O'Hagan KL ( Department of Microbiology-Immunology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611); Choi J ( Department of Microbiology-Immunology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611); Pryshchep O ( Department of Microbiology-Immunology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611); Chernoff J ( Cancer Biology Program, Fox Chase Cancer Center, Philadelphia, PA 19111.); Phee H ( Department of Microbiology-Immunology, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611) |
| Abstract | Although significant effort has been devoted to understanding the thymic development of Foxp3(+) regulatory T cells (Tregs), the precise signaling pathways that govern their lineage commitment still remain enigmatic. Our findings show a novel role for the actin cytoskeletal remodeling protein, p21-activated kinase 2 (Pak2), in Treg development and homeostasis. The absence of Pak2 in T cells resulted in a marked reduction in both thymus- and peripherally derived Tregs, accompanied by the development of spontaneous colitis in Pak2-deficient mice. Additionally, Pak2 was required for the proper differentiation of in vitro-induced Tregs as well as maintenance of Tregs. Interestingly, Pak2 was necessary for generating the high-affinity TCR- and IL-2-mediated signals that are required by developing Tregs for their lineage commitment. These findings provide novel insight into how developing thymocytes translate lineage-specific high-affinity TCR signals to adopt the Treg fate, and they further posit Pak2 as an essential regulator for this process. |
| ISSN | 00221767 |
| e-ISSN | 15506606 |
| DOI | 10.4049/jimmunol.1500843 |
| Journal | The Journal of Immunology |
| Issue Number | 4 |
| Volume Number | 195 |
| Language | English |
| Publisher | The American Association of Immunologists |
| Publisher Date | 2015-08-15 |
| Publisher Place | United States |
| Access Restriction | Open |
| Subject Keyword | Peripheral Tolerance Genetics Immunology Receptors, Antigen, T-cell Metabolism T-lymphocytes, Regulatory P21-activated Kinases Animals Cell Differentiation Colitis Pathology Forkhead Transcription Factors Homeostasis Immunophenotyping Intestinal Mucosa Mice Mice, Knockout Phenotype Signal Transduction T-lymphocyte Subsets Cytology Thymus Gland Deficiency Research Support, N.i.h., Extramural Research Support, Non-u.s. Gov't Discipline Immunology |
| Content Type | Text |
| Resource Type | Article |
| Subject | Immunology and Allergy Immunology |
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