Frequent expression of activation-induced cytidine deaminase in diffuse large B-cell lymphoma tissues from persons living with HIV.
Frequent expression of activation-induced cytidine deaminase in diffuse large B-cell lymphoma tissues from persons living with HIV.
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DOI：
10.1097/qad.0000000000002653
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发表时间：
2020-11-15
期刊：
影响因子：
--
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中科院分区：
文献类型：
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The increased risk for persons living with HIV to develop diffuse large B-cell lymphoma (DLBCL) even in the post-antiretroviral therapy eras suggests a role beyond immunosuppression in lymphoma development. However, the mechanisms leading to lymphoma in the HIV setting are not fully understood. HIV is known to induce activation induced cytidine deaminase (AID) levels in non-neoplastic B-cells in vitro and chronic AID expression may play an important role in lymphomagenesis. While AID expression is observed in B-cell lymphoma, studies in HIV-associated DLBCL are limited. In this study, we conducted a retrospective review of DLBCL tissues from patients with and without HIV infection to compare expression of AID and B-cell receptors potentially involved in HIV and B-cell interaction. We evaluated DLBCL formalin-fixed paraffin-embedded tissues from 72 HIV seropositive and 58 HIV seronegative patients for AID, DC-SIGN, and CD40 protein expression. BCL2 and MYC, two well-established prognostically significant oncoproteins in DLBCL, were also assessed at the protein and mRNA levels. Subset analysis was performed according to DLBCL subtype and EBV status. Of note, AID expression was more frequent in HIV-associated DLBCL compared to non-HIV-associated DLBCL regardless of cell-of-origin subtype, and also displayed significantly less BCL2 expression. Despite no direct correlation with AID expression, the HIV-DLBCL tissues also exhibited high levels of the DC-SIGN receptor. Collectively, these findings support a potential role for AID in the pathogenesis of HIV-associated lymphomas and suggest the need of further investigations into the involvement of the DC-SIGN receptor-signaling pathway.
影响因子：
3.7
作者：
Perisé-Barrios AJ;Muñoz-Fernandez MÁ;Pion M
通讯作者：
Pion M