HIV-1 gp120 primes lymphocytes for opioid-induced, beta-arrestin 2-dependent apoptosis.
HIV-1 gp120 primes lymphocytes for opioid-induced, beta-arrestin 2-dependent apoptosis.
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DOI:
10.1016/j.bbamcr.2009.05.007
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发表时间:
2009-08
期刊:
影响因子:
--
通讯作者:
Yin D
中科院分区:
文献类型:
--
作者:
Moorman J;Zhang Y;Liu B;LeSage G;Chen Y;Stuart C;Prayther D;Yin D
The mechanisms by which opioids affect progression of human immunodeficiency virus type 1 (HIV-1) infection are not well-defined. HIV-1 gp120 is important in the apoptotic death of uninfected, bystander T cells. In this study, we show that co-treatment of human peripheral blood mononuclear cells (PBMC) with HIV-1 gp120/morphine synergistically induces apoptosis in PBMC. Co-treatment of murine splenocytes from μ opiate receptor knockout mice with gp120/morphine resulted in decreased apoptosis when compared splenocytes from wild type mice. Co-treatment of human PBMC or murine splenocytes with gp120/morphine led to decreased expression of β–arrestin 2, a protein required for opioid-mediated signaling. The role of β–arrestin 2 was confirmed in Jurkat lymphocytes, in which 1) over-expression of β–arrestin 2 inhibited gp120/morphine-induced apoptosis and 2) RNA interference of β–arrestin 2 expression enhanced gp120/morphine-induced apoptosis. These data suggest a novel mechanism by which HIV-1 gp120 and opioids induce lymphocyte cell death.
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DOI:
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