Title |
PLCγ-dependent mTOR signalling controls IL-7-mediated early B cell development
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Published in |
Nature Communications, November 2017
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DOI | 10.1038/s41467-017-01388-5 |
Pubmed ID | |
Authors |
Mei Yu, Yuhong Chen, Hu Zeng, Yongwei Zheng, Guoping Fu, Wen Zhu, Ulrich Broeckel, Praful Aggarwal, Amy Turner, Geoffrey Neale, Cliff Guy, Nan Zhu, Hongbo Chi, Renren Wen, Demin Wang |
Abstract |
The precise molecular mechanism underlying the regulation of early B cell lymphopoiesis is unclear. The PLCγ signaling pathway is critical for antigen receptor-mediated lymphocyte activation, but its function in cytokine signaling is unknown. Here we show that PLCγ1/PLCγ2 double deficiency in mice blocks early B cell development at the pre-pro-B cell stage and renders B cell progenitors unresponsive to IL-7. PLCγ pathway inhibition blocks IL-7-induced activation of mTOR, but not Stat5. The PLCγ pathway activates mTOR through the DAG/PKC signaling branch, independent of the conventional Akt/TSC/Rheb signaling axis. Inhibition of PLCγ/PKC-induced mTOR activation impairs IL-7-mediated B cell development. PLCγ1/PLCγ2 double-deficient B cell progenitors have reduced expression of genes related to B cell lineage, IL-7 signaling, and cell cycle. Thus, IL-7 receptor controls early B lymphopoiesis through activation of mTOR via PLCγ/DAG/PKC signaling, not via Akt/Rheb signaling. |
X Demographics
Geographical breakdown
Country | Count | As % |
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Unknown | 2 | 100% |
Demographic breakdown
Type | Count | As % |
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Members of the public | 2 | 100% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
Unknown | 62 | 100% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 12 | 19% |
Student > Bachelor | 9 | 15% |
Researcher | 6 | 10% |
Other | 4 | 6% |
Student > Master | 4 | 6% |
Other | 11 | 18% |
Unknown | 16 | 26% |
Readers by discipline | Count | As % |
---|---|---|
Biochemistry, Genetics and Molecular Biology | 16 | 26% |
Immunology and Microbiology | 11 | 18% |
Medicine and Dentistry | 7 | 11% |
Agricultural and Biological Sciences | 6 | 10% |
Social Sciences | 1 | 2% |
Other | 3 | 5% |
Unknown | 18 | 29% |