EBV Infection of Human B Lymphocytes Leads to Down-Regulation of Bim Expression: Relationship to Resistance to Apoptosis1
EBV Infection of Human B Lymphocytes Leads to Down-Regulation of Bim Expression: Relationship to Resistance to Apoptosis1
复制标题
人 B 淋巴细胞的 EBV 感染导致 Bim 表达下调:与细胞凋亡抵抗的关系1
作者:
C. Clybouw;B. Mchichi;S. Mouhamad;M. Auffredou;M. Bourgeade;Surendra Sharma;G. Leca;A. Vazquez
EBV infects a large proportion of the human population worldwide and is one of the major viruses with human B lymphocyte tropism. It can immortalize human B lymphocytes and controls their resistance to apoptosis. EBV infection is associated with several lymphomas, including Burkitt’s lymphoma. In this report we show that EBV infection leads to the post-transcriptional down-regulation of expression of the proapoptotic protein Bim. This process involves the phosphorylation of BimEL by the constitutive EBV-activated kinase ERK1/2, followed by its degradation through the proteasome pathway. We also show that ectopic expression of BimEL in EBV-positive Burkitt’s lymphoma cells can enhance the sensitivity of these cells to serum deprivation-dependent apoptosis. Thus, EBV-mediated resistance to growth factor deprivation in human B lymphocytes is dependent on BimEL expression. Our data suggest that this regulatory pathway is an important contributor to the oncogenic potential of EBV.
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影响因子:
56.9
作者:
Bouillet, P;Metcalf, D;Strasser, A
通讯作者:
Strasser, A
影响因子:
16
作者:
Puthalakath, H;Huang, DCS;Strasser, A
通讯作者:
Strasser, A
影响因子:
32.4
作者:
Caldwell, RG;Wilson, JB;Longnecker, R
通讯作者:
Longnecker, R
DOI:
--
发表时间:
1995
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
作者:
Arvanitakis,L;Yaseen,N;Sharma,S
通讯作者:
Sharma,S
DOI:
--
发表时间:
1995
期刊:
Oncogene.
影响因子:
--
作者:
Chaouchi,N;Arvanitakis,L;Auffredou,MT;Blanchard,DA;Vazquez,A;Sharma,S
通讯作者:
Sharma,S