Selective dysregulation of the FcgammaIIB receptor on memory B cells in SLE.
Selective dysregulation of the FcgammaIIB receptor on memory B cells in SLE.
复制标题
DOI:
10.1084/jem.20051503
复制
发表时间:
2006-09-04
期刊:
影响因子:
--
通讯作者:
Diamond B
中科院分区:
文献类型:
--
作者:
Mackay M;Stanevsky A;Wang T;Aranow C;Li M;Koenig S;Ravetch JV;Diamond B
The inappropriate expansion and activation of autoreactive memory B cells and plasmablasts contributes to loss of self-tolerance in systemic lupus erythematosus (SLE). Defects in the inhibitory Fc receptor, FcγRIIB, have been shown to contribute to B cell activation and autoimmunity in several mouse models of SLE. In this paper, we demonstrate that expression of FcγRIIB is routinely up-regulated on memory B cells in the peripheral blood of healthy controls, whereas up-regulation of FcγRIIB is considerably decreased in memory B cells of SLE patients. This directly correlates with decreased FcγRIIB-mediated suppression of B cell receptor–induced calcium (Ca2+) response in those B cells. We also found substantial overrepresentation of African-American patients among those who failed to up-regulate FcγRIIB. These results suggest that the inhibitory receptor, FcγRIIB, may be impaired at a critical checkpoint in SLE in the regulation of memory B cells; thus, FcγRIIB represents a novel target for therapeutic interventions in this disease.
登录
查看更多内容
影响因子:
32.4
作者:
Bolland, S;Pearse, RN;Ravetch, JV
通讯作者:
Ravetch, JV
影响因子:
30.5
作者:
Fukuyama, H;Nimmerjahn, F;Ravetch, JV
通讯作者:
Ravetch, JV
影响因子:
3.5
作者:
Mockridge, CI;Rahman, A;Potter, KN
通讯作者:
Potter, KN
DOI:
10.1084/jem.189.1.179
发表时间:
1999-01-04
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Clynes R;Maizes JS;Guinamard R;Ono M;Takai T;Ravetch JV
通讯作者:
Ravetch JV
影响因子:
6.1
作者:
Bazilio, AP;Viana, VST;Monteiro, RC
通讯作者:
Monteiro, RC