Abstract:
:Apoptosis is an important mechanism of human immunodeficiency virus type 1 (HIV-1)-induced T-cell depletion. Our recent findings revealed mitogenic stimulation-dependent apoptosis induction in healthy donor-derived peripheral blood T-lymphocytes after adsorption with defective HIV-1 particles through acquirement by a subset of CD4+/CD38- cells of specific killer function. Based on these in vitro observations, we have extended the significance of this killing activity of CD4+/CD38- cells directly derived from HIV-1 carriers. The CD4+/CD38- cells from HIV-1-positive individuals showed significantly higher cell-killing activities than those from HIV-1-negative donors by co-culture with allogeneic resting T-cells after mitogenic stimulation. Furthermore, most of the samples induced apoptosis in a Fas-dependent manner. Thus, it is suggested that HIV-1 infection-related apoptosis is triggered by inappropriate activation of a certain resting T-cell subset, presumably due to adsorption with HIV-1 particles.
journal_name
Virus Resjournal_title
Virus researchauthors
Kameoka M,Auwanit W,Suzuki S,Horikoshi H,Khlai-Khlam N,Meguro T,Yamada K,Tanaka Y,Yoshihara K,Luftig RB,Ikuta Kdoi
10.1016/s0168-1702(98)00052-5subject
Has Abstractpub_date
1998-07-01 00:00:00pages
115-22issue
1eissn
0168-1702issn
1872-7492pii
S0168170298000525journal_volume
56pub_type
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