Journal
METHODS
Volume 31, Issue 2, Pages 127-134Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/S1046-2023(03)00122-1
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Apoptosis induced by interaction of members of the TNF-/TNF-receptor superfamily has been considered as a major mechanism of cell-mediated cytotoxicity. For functional analysis, the Cr-51 release assay has been widely used, which requires loss of membrane integrity in the apoptotic target cell. However, loss of membrane integrity is a late event during apoptosis and therefore only late apoptotic cells will be detected by this method. In contrast, the JAM-assay first described by Polly Matzinger has been demonstrated to be more sensitive than the Cr-51 release assay, since this method is dependent on DNA-fragmentation which precedes loss of membrane integrity in most apoptotic cells. The JAM-assay is easier to perform, less expansive, and safer than the current standard Cr-51 release assay. Therefore, this article will focus on optimized conditions of the JAM-assay to detect and quantitate Fas (CD95/ Apo-l)-induced apoptosis as an example of death-receptor-mediated cytotoxicity. (C) 2003 Elsevier Science (USA). All rights reserved.
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