Distinct mechanisms for rescue from apoptosis in Ramos human B cells by signaling through CD40 and interleukin‐4 receptor: role for inhibition of an early response gene, Berg36
Distinct mechanisms for rescue from apoptosis in Ramos human B cells by signaling through CD40 and interleukin‐4 receptor: role for inhibition of an early response gene, Berg36
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通过 CD40 和白细胞介素 4 受体信号传导来拯救 Ramos 人类 B 细胞凋亡的独特机制:抑制早期反应基因 Berg36 的作用
DOI:
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发表时间:
1996
影响因子:
5.4
通讯作者:
John J. Murphy
中科院分区:
文献类型:
--
作者:
Z. Ning;J. Norton;Jin Li;John J. Murphy
The role of interleukin‐4 (IL‐4) and CD40 signaling in negative regulation of apoptosis in human Ramos B cells induced in response to different agents was investigated. CD40 ligation protected cells from apoptosis induced by calcium ionophore through an initial, rapid and apparently Bcl‐2‐independent mechanism, associated with up‐regulation of Bcl‐xL. However, rescue from apoptosis induced by inhibition of macromolecular synthesis required several hours of prior stimulation with CD40 ligand/antibody and was accompanied by up‐regulation of Bcl‐2. In contrast, IL‐4 did not up‐regulate Bcl‐2 or Bcl‐xL and did not inhibit apoptosis induced by inhibitors of macromolecular synthesis. However, IL‐4 did protect Ramos cells from apoptosis induced by calcium ionophore and this effect was accompanied by inhibition of ionophore‐induced expression of an immediate early gene encoding a 36‐kDa zinc‐finger protein, Berg36. Anti‐sense blockade of Berg36 expression partially inhibited ionophore‐induced apoptosis to an extent commensurate with the level of IL‐4 protection, implicating Berg36 function as a requirement for apoptosis induced through calcium signaling and as a target for IL‐4 through which this cytokine inhibits apoptosis in Ramos B cells. These distinct mechanisms for rescue from apoptosis by CD40 and IL‐4 may help explain the co‐operative roles of these T cell‐derived signals for B cell survival.
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影响因子:
5.3
作者:
Selvakumaran,M;Lin,HK;Sjin,RT;Reed,JC;Liebermann,DA;Hoffman,B
通讯作者:
Hoffman,B
DOI:
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发表时间:
1995
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Wang,Z;Karras,JG;Howard,RG;Rothstein,TL
通讯作者:
Rothstein,TL
影响因子:
4.3
作者:
Butch,AW;Nahm,MH
通讯作者:
Nahm,MH
DOI:
--
发表时间:
1990-11
期刊:
The Journal of biological chemistry
影响因子:
--
作者:
Raymond N. DuBois;Michael W. McLaneS;Kevin RyderQ;Lester F. Laull;D. Nathans
通讯作者:
Raymond N. DuBois;Michael W. McLaneS;Kevin RyderQ;Lester F. Laull;D. Nathans
影响因子:
56.9
作者:
SHI, YF;GLYNN, JM;GREEN, DR
通讯作者:
GREEN, DR