BCR-induced superoxide negatively regulates B-cell proliferation and T-cell-independent type 2 Ab responses.
BCR-induced superoxide negatively regulates B-cell proliferation and T-cell-independent type 2 Ab responses.
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DOI:
10.1002/eji.200939587
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发表时间:
2009-12
影响因子:
5.4
通讯作者:
Clark, Edward A.
中科院分区:
文献类型:
--
作者:
Richards, Sabrina M.;Clark, Edward A.
Superoxide and its derivatives have been implicated as secondary messenger molecules that influence signaling cascades in non-phagocytes. B lymphocytes produce superoxide after BCR ligation. We found that these reactive oxygen species (ROS) regulate B cell signaling and entry into the cell cycle. B cells from mice deficient in the gp91phox subunit of the NADPH oxidase complex are unable to generate ROS after BCR ligation. However, after BCR stimulation, more gp91phox KO B cells enter the G1 stage of the cell cycle and proliferate than WT B cells. BCR ligation leads to a more rapid decrease in p27Kip1 levels in gp91phox KO B cells. Gp91phox KO mice display enhanced TI-2, but normal T-dependent antibody responses. ROS-dependent regulation of BCR-induced proliferation may help modulate the size of the humoral response to T cell-independent type 2 (TI-2) Ag immunization.
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影响因子:
15.3
作者:
Loder, F;Mutschler, B;Ray, R J;Paige, C J;Sideras, P;Torres, R;Lamers, M C;Carsetti, R
通讯作者:
Carsetti, R
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影响因子:
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作者:
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通讯作者:
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