Analysis of signaling via surface immunoglobulin receptors on b cells from cba/n mice
Analysis of signaling via surface immunoglobulin receptors on b cells from cba/n mice
复制标题
CBA/n 小鼠 B 细胞表面免疫球蛋白受体信号传导分析
DOI:
10.1002/eji.1830191117
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发表时间:
1989
影响因子:
5.4
通讯作者:
G. Klaus
中科院分区:
文献类型:
--
作者:
K. Rigley;M. Harnett;R. Phillips;G. Klaus
CBA/N mice, which carry the xid immunodeficiency, lack a mature subpopulation of B cells. The residual B cells in these mice do not make antibodies to type‐2 T‐independent antigens, nor do they synthesize DNA in response to mitogenic forms of anti‐Ig antibodies. It is therefore an attractive hypothesis that the surface immunoglobulin receptors (sIgR) on xid B cells signal abnormally following cross‐linking. We show here that anti‐Ig antibodies do cause inositol phospholipid hydrolysis and Ca2+ mobilization in xid B cells. However, the responses of these cells are only 40%–50% of those of normal B cells. Studies with permeabilized cells demonstrated that the hyporesponsiveness is not due to ineffective coupling of sIgR to their associated G‐protein. Rather it is apparently due to a quantitative and/or qualitative deficiency in the polyphosphoinositide‐specific phosphodiesterase which mediates sIgR‐induced inositol phospholipid hydrolysis. These observations may provide a biochemical explanation for the immunological abnormalities resulting from the xid mutation.
DOI:
--
发表时间:
1983
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Monroe,JG;Cambier,JC
通讯作者:
Cambier,JC
DOI:
--
发表时间:
1985
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Grupp,SA;Harmony,JA
通讯作者:
Harmony,JA