miR-150 Regulates Memory CD8 T Cell Differentiation via c-Myb
MicroRNAs play an important role in T cell responses. However, how microRNAs regulate CD8 T cell memory remains poorly defined. Here, we found that miR-150 negatively regulates CD8 T cell memory in vivo. Genetic deletion of miR-150 disrupted the balance between memory precursor and terminal effector...
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Published in | Cell reports (Cambridge) Vol. 20; no. 11; pp. 2584 - 2597 |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
United States
Elsevier Inc
12.09.2017
Elsevier |
Subjects | |
Online Access | Get full text |
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Summary: | MicroRNAs play an important role in T cell responses. However, how microRNAs regulate CD8 T cell memory remains poorly defined. Here, we found that miR-150 negatively regulates CD8 T cell memory in vivo. Genetic deletion of miR-150 disrupted the balance between memory precursor and terminal effector CD8 T cells following acute viral infection. Moreover, miR-150-deficient memory CD8 T cells were more protective upon rechallenge. A key circuit whereby miR-150 repressed memory CD8 T cell development through the transcription factor c-Myb was identified. Without miR-150, c-Myb was upregulated and anti-apoptotic targets of c-Myb, such as Bcl-2 and Bcl-xL, were also increased, suggesting a miR-150-c-Myb survival circuit during memory CD8 T cell development. Indeed, overexpression of non-repressible c-Myb rescued the memory CD8 T cell defects caused by overexpression of miR-150. Overall, these results identify a key role for miR-150 in memory CD8 T cells through a c-Myb-controlled enhanced survival circuit.
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•MiR-150 negatively regulates CD8 T cell memory formation•Absence of miR-150 enhances memory CD8 T cell secondary responses•MiR-150 targets c-Myb in CD8 T cells•C-Myb-Bcl-2/Bcl-xl axis positively regulates CD8 T cell memory formation
Memory CD8 T cells are critical for long-term adaptive immune protection. In this study, Chen et al. find that miR-150 negatively regulates CD8 T cell memory formation by targeting the c-Myb-Bcl-2/Bcl-xl survival axis. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 These authors contributed equally to this work Lead Contact. |
ISSN: | 2211-1247 2211-1247 |
DOI: | 10.1016/j.celrep.2017.08.060 |