Role of latent membrane protein 1 in chronic active Epstein-Barr virus infection-derived T/NK-cell proliferation.

Role of latent membrane protein 1 in chronic active Epstein-Barr virus infection-derived T/NK-cell proliferation.
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DOI:
10.1002/cam4.256
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发表时间:
2014-08
期刊:
影响因子:
4
通讯作者:
Kimura, Hiroshi
Kimura, Hiroshi
中科院分区:
医学3区
文献类型:
--
作者:
Ito, Takuto;Kawazu, Hidetaka;Murata, Takayuki;Iwata, Seiko;Arakawa, Saki;Sato, Yoshitaka;Kuzushima, Kiyotaka;Goshima, Fumi;Kimura, Hiroshi

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EB病毒(EBV)主要感染B细胞并引起B细胞淋巴瘤,如伯基特淋巴瘤和霍奇金淋巴瘤。然而,它也感染其他类型的细胞,包括T和自然杀伤(NK)细胞,并导致疾病,如慢性活动性EBV感染(CAEBV)和T/NK细胞淋巴瘤。CAEBV是一种预后不良的淋巴组织增生性疾病,其中EBV阳性T或NK细胞快速生长,尽管导致细胞扩增的分子机制仍有待阐明。EB病毒编码的潜伏膜蛋白1(LMP 1)是一种致癌基因,其可以转化某些细胞类型,例如B细胞和小鼠成纤维细胞,并且因此可以刺激CAEBV中的细胞增殖。在此,我们使用条件性表达LMP 1的细胞检测了LMP 1对EBV阴性细胞的作用,并使用LMP 1的显性阴性形式通过抑制LMP 1的功能检测了LMP 1对CAEBV来源的EBV阳性细胞的作用。我们证明,LMP 1是负责在来自CAEBV的细胞系中的细胞增殖增加,而LMP 1没有给EBV阴性细胞系任何增殖优势。
Epstein–Barr virus (EBV) predominantly infects B cells and causes B-cell lymphomas, such as Burkitt lymphoma and Hodgkin lymphoma. However, it also infects other types of cells, including T and natural killer (NK) cells, and causes disorders, such as chronic active EBV infection (CAEBV) and T/NK-cell lymphoma. The CAEBV is a lymphoproliferative disease with poor prognosis, where EBV-positive T or NK cells grow rapidly, although the molecular mechanisms that cause the cell expansion still remain to be elucidated. EBV-encoded latent membrane protein 1 (LMP1) is an oncogene that can transform some cell types, such as B cells and mouse fibroblasts, and thus may stimulate cell proliferation in CAEBV. Here, we examined the effect of LMP1 on EBV-negative cells using the cells conditionally expressing LMP1, and on CAEBV-derived EBV-positive cells by inhibiting the function of LMP1 using a dominant negative form of LMP1. We demonstrated that LMP1 was responsible for the increased cell proliferation in the cell lines derived from CAEBV, while LMP1 did not give any proliferative advantage to the EBV-negative cell line.
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