NDLI: Gr-1+CD11b+ Immature Myeloid Cells (IMC) Promote Resistance of Pro-Inflammatory T Cells to Suppression by Regulatory T Cells in Atherosclerotic Apo E- Deficient Mice

Content Provider	PubMed Central
Author	Chen, Yulin Jian, Ying Liu, Minjie Zhong, Liang Zhang, Fang Yang, Weifeng Zhao, Xu Chen, Guofan Liu, Yuhua
Editor	Zimmer, Jacques
Copyright Year	2014
Abstract	Accumulating evidence indicates that both defects in Treg numbers and/or function as well as resistance of effector T cells to suppression may contribute to the development of human chronic inflammatory diseases. However, which mechanism involved in the progression of atherosclerosis remains unclear. In this study, we evaluated the production and function of CD4+ inflammatory and regulatory T cells in atherosclerosis-prone mice. We found that the hyperactivity and unresponsiveness to Treg-mediated suppression of inflammatory CD4+ T cells occurred in the progression of atherosclerosis, though Treg cells were present in very large numbers and fully functional. We further found that Gr-1+CD11b+ immature myeloid cells were significantly accumulated in atherosclerotic Apo E−/− mice, and they promoted resistance of inflammatory CD4+ T cells to Treg-mediated suppression in vitro and in vivo. we further confirmed that Gr-1+CD11b+ immature myeloid cells produced high level of interleukin 6 which was at least partially responsible for inducing unresponsiveness of inflammatory CD4+ T cells to suppression via activation of Jak/Stat signaling pathway. Taken together, these findings might provide new insights to explore potential targets for immune therapeutic intervention in atherosclerosis.
Related Links	http://dx.doi.org/10.1371/journal.pone.0108620
Starting Page	108620
File Format	PDF
ISSN	19326203
e-ISSN	19326203
Journal	PLoS ONE
Issue Number	9
Volume Number	9
Language	English
Publisher	Public Library of Science
Publisher Date	2014-09-01
Access Restriction	Open
Rights Holder	Public Library of Science
Subject Keyword	Biochemistry, Genetics and Molecular Biology(all) Agricultural and Biological Sciences(all) Medicine(all) Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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