Soluble HLA Class I Molecules/CD8 Ligation Trigger Apoptosis of CD8+Cells by Fas/Fas-Ligand Interaction
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منابع مشابه
Effect of Soluble HLA Class I Molecule on NK/LAK Cells Activation Induced by Poly I:C
Background: Natural Killer cells express killer inhibitory receptors specific for HLA-class I molecules. These receptors could induce signals that determine NK cells ability to mediate cytotoxicity. Purified soluble form of HLA class I molecules (sHLA) could bind to NK cell receptors and down-regulate the NK killer function. Objective: To evaluate the influence of sHLA and two monoclonal an...
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In many types of cells, ligation of human leukocyte antigens (HLA) Class I molecules with specific mAbs results in the transduction of signals that trigger different cell functions. We have investigated the effects of Class I ligation in human neutrophils. After several hours in culture, neutrophils split spontaneously into two subpopulations, one with normal and the other with reduced levels o...
متن کاملSoluble HLA class I induces NK cell apoptosis upon the engagement of killer-activating HLA class I receptors through FasL-Fas interaction.
The engagement of the activating isoforms of C-type lectin inhibitory receptor (CLIR) or killer Ig-like receptor (KIR) by their natural ligands, represented by soluble HLA-I (sHLA-I) molecules, induced programmed cell death of natural killer (NK) cells. Indeed, NK cell apoptosis elicited by either putative HLA-E and HLA-F (sHLA-I non-A, -B, -C, and -G) or sHLA-I-Cw4 or -Cw3 from untransfected o...
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We analyzed herein whether antibodies to HLA class I alpha1 domain, which trigger apoptosis of activated T cells, may also control the growth/survival of human B lymphocytes. Addition of monoclonal antibody (MoAb) 90 (mouse IgG1) or YTH862 (rat IgG2b) was found to strongly inhibit the proliferation of CD40-activated total tonsil B cells as well as that of purified naive, germinal center, and me...
متن کاملSoluble human MHC class I molecules induce soluble Fas ligand secretion and trigger apoptosis in activated CD8(+) Fas (CD95)(+) T lymphocytes.
In the present study, we have evaluated the apoptotic effect of soluble human MHC class I (sHLA-I) antigens on CD8(+) T lymphocytes. sHLA-I antigens and beta(2)-microglobulin-free HLA class I heavy chains, isolated from serum, induced apoptosis on phytohemagglutinin-activated CD8(+) T lymphocytes in autologous and allogeneic combinations. The extent of CD8(+) T cell apoptosis depends on the deg...
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ژورنال
عنوان ژورنال: The Scientific World JOURNAL
سال: 2002
ISSN: 1537-744X
DOI: 10.1100/tsw.2002.122