B cell lymphoma in HIV transgenic mice.

B cell lymphoma in HIV transgenic mice.
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DOI:
10.1186/1742-4690-10-92
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发表时间:
2013-08-28
期刊:
影响因子:
3.3
通讯作者:
Bryant J
Bryant J
中科院分区:
医学2区
文献类型:
--
作者:
Curreli S;Krishnan S;Reitz M;Lunardi-Iskandar Y;Lafferty MK;Garzino-Demo A;Zella D;Gallo RC;Bryant J

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人类免疫缺陷病毒 I 型 (HIV-1) 感染与 B 细胞淋巴瘤的高发病率相关。 HIV 在这些淋巴瘤中的作用尚不清楚,目前没有有效的体内模型来更好地了解 HIV 相关淋巴瘤的发生。转基因 (Tg) 26 小鼠具有 7.4 kb pNL4-3 HIV-1 原病毒,缺乏包含部分 gag-pol 区域的 3.1 kb 序列。大约 15% 的 HIV Tg 小鼠自发发展为淋巴瘤,并具有标志性预诊断标志物,包括皮肤病变、弥漫性淋巴结肿大和促炎性血清细胞因子增加。在这里,我们描述了 Tg 小鼠 B 细胞白血病/淋巴瘤的表型和分子特征。转化的 B 细胞群由 CD19+pre-BCR+CD127+CD43+CD93+ 前体 B 细胞组成。肿瘤细胞是克隆性的,其特征是几种细胞癌基因的表达增加。患有淋巴瘤的 Tg 小鼠中 B 细胞刺激性细胞因子 IL-1β、IL-6、IL-10、IL-12p40、IL-13 和 TNFα 以及 HIV 蛋白 p17、gp120 和 nef 的表达升高。 HIV 蛋白和 B 细胞刺激因子表达的增加与这些因素中的一种或多种在淋巴瘤发展中发挥作用的解释是一致的。这些淋巴瘤与 HIV/AIDS+ 患者中发生的淋巴瘤有许多相似之处,可能为了解 AIDS 相关淋巴瘤的发生和阐明 HIV-1 所起的作用提供有价值的模型。
Human Immunodeficiency Virus Type I (HIV-1) infection is associated with a high incidence of B-cell lymphomas. The role of HIV in these lymphomas is unclear and currently there are no valid in vivo models for better understanding HIV-related lymphomagenesis. Transgenic (Tg) 26 mice have a 7.4-kb pNL4-3 HIV-1 provirus lacking a 3.1-kb sequence encompassing parts of the gag-pol region. Approximately 15% of these HIV Tg mice spontaneously develop lymphoma with hallmark pre-diagnostic markers including skin lesions, diffuse lymphadenopathy and an increase in pro-inflammatory serum cytokines. Here we describe the phenotypic and molecular characteristics of the B cell leukemia/lymphoma in the Tg mice. The transformed B cell population consists of CD19+pre-BCR+CD127+CD43+CD93+ precursor B cells. The tumor cells are clonal and characterized by an increased expression of several cellular oncogenes. Expression of B cell-stimulatory cytokines IL-1β, IL-6, IL-10, IL-12p40, IL-13 and TNFα and HIV proteins p17, gp120 and nef were elevated in the Tg mice with lymphoma. Increased expression of HIV proteins and the B-cell stimulatory factors is consistent with the interpretation that one or more of these factors play a role in lymphoma development. The lymphomas share many similarities with those occurring in HIV/AIDS+ patients and may provide a valuable model for understanding AIDS-related lymphomagenesis and elucidating the role played by HIV-1.
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发表时间: 2003-11-01
影响因子: 8.6
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影响因子: 3.7
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