Journal of Cell Signaling
Open Access
ISSN: 2576-1471
+44 1223 790975
ISSN: 2576-1471
+44 1223 790975
Haley Tucker
1 University Station A5000, Austin TX 78712
Tanzania
Review Article
Smyd1C Mediates CD8 T Cell Death via Regulation of Bcl2-Mediated Restriction of outer Mitochondrial Membrane Integrity
Author(s): Hui Nie, Gary Rathbun and Haley TuckerHui Nie, Gary Rathbun and Haley Tucker
The SET and Mynd domain 1 (Smyd1) locus encodes three tissue-restricted isoforms. Two previously characterized isoforms, Smyd1A and Smyd1B, are heart and skeletal muscle-restricted histone methyl transferases. Here we report that a third, non-catalytic isoform, Smyd1C, is expressed predominantly in activated CD8 T cells. While Smyd1C - deficient CD8 T cells undergo activation-induced apoptosis, neither of two classical mechanisms activation-induced cell death nor activated cell autonomous death are utilized. Instead, Smyd1C accumulates within both mitochondria and the immunological synapse where it associates with Bcl-2, FK506-Binding Protein 8/38 (FKBP38) and Calcineurin. This complex maintains Bcl-2 phosphorylation, enhanced mitochondrial localization, and restricted apo.. View More»
DOI:
10.4172/2576-1471.1000163