Epstein-Barr virus LMP2A accelerates MYC-induced lymphomagenesis.
Epstein-Barr virus LMP2A accelerates MYC-induced lymphomagenesis.
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爱泼斯坦 - 巴尔病毒LMP2A加速了MYC诱导的淋巴作用。
DOI:
10.1038/onc.2008.492
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发表时间:
2009-03-19
期刊:
影响因子:
8
通讯作者:
Swanson-Mungerson, M.
中科院分区:
文献类型:
--
作者:
Bultema, R.;Longnecker, R.;Swanson-Mungerson, M.
Despite the identification of Epstein-Barr virus (EBV) in tumors of Burkitt’s lymphoma (BL) over 40 years ago, the exact contribution of EBV to BL is undefined. EBV encodes for multiple proteins in latent B cells that affect B cell survival and activation. One such protein, latent membrane protein 2A (LMP2A), protects B cells from numerous pro-apoptotic stimuli. Therefore, we tested if LMP2A protects B cells from apoptosis induced by aberrant c-MYC expression that precedes and dominates BL. We crossed LMP2A-transgenic mice (LMP2A-Tg) in which all B cells express LMP2A to a transgenic mouse that expresses a BL translocation of myc (λ-MYC-Tg mice). LMP2A promotes proliferation and protects B cells from MYC-induced apoptosis in λ-MYC-Tg mice. LMP2A also accelerates the development of lymphoma in LMP2A/λ-MYC-Tg mice. Finally, LMP2A increases the expression of Bcl-XL in both pre-tumor B cells and tumor cells, suggesting a mechanism for LMP2A mediated B cell survival in the presence of MYC. These results support a hypothesis that EBV LMP2A promotes tumor development by protecting pre-tumor B cells that would normally apoptose after the c-myc translocation.
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DOI:
10.1084/jem.167.2.353
发表时间:
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期刊:
The Journal of experimental medicine
影响因子:
--
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通讯作者:
Adams JM