ArticleImmunology2002
The regulation of DNAse activities in subcellular compartments of activated thymocytes.
Article in Immunology, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
0 citing papers in PubMed, 8 citations in OpenAlex.
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Authors and funding
8 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Thymocytes expressing self-reactive T-cell receptors (TCR) are eliminated in the thymus through a TCR-mediated signal. This cell death signal (negative selection) generates nuclear morphological change and DNA fragmentation in thymocytes. However, the pathway leading to DNA fragmentation of thymocytes following TCR engagement remains obscure. In this study, we investigated the localization and function of caspase-activated DNAse (CAD) and its inhibitor (ICAD) in thymocytes prior to or after in vivo TCR stimulation. We showed that CAD and ICAD are co-localized in microsome, nuclei and cytosol in unstimulated thymocytes. Following in vivo TCR engagement, ICAD located in cytosol and microsome was degraded and the resulting activated CAD induced chromosomal DNA fragmentation. CAD present in cytosol and microsome of unstimulated thymocytes was activated by recombinant caspase-3, and microsomal CAD was released to the cytosol. These results demonstrate that TCR engagement of thymocytes induces caspase-3-dependent activation of CAD localized in both cytosol and microsome, leading to DNA fragmentation in harmony.
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