Control of signaling-mediated clearance of apoptotic cells by the tumor suppressor p53
Copyright policy )Control of signaling-mediated clearance of apoptotic cells by the tumor suppressor p53
Tumor suppressor p53 linked to immune function We thought we knew all we needed to about the tumor suppressor p53. However, Yoon et al. now describe a previously unrecognized function of p53 (see the Perspective by Zitvogel and Kroemer). p53 induces expression of the gene encoding DD1α, a receptor-like transmembrane protein of the immunoglobulin superfamily. In conditions of stress, p53 activation can lead to cell death. p53-induced expression of DD1α also promotes the clearance of dead cells by promoting engulfment by macrophages. Furthermore, expression of DD1α on T cells inhibits T cell function. Thus, p53 offers protection from inflammatory disease caused by the accumulation of apoptotic cells, and its suppression of T cells might help cancer cells to escape immune detection. Science , this issue 10.1126/science.1261669 ; see also p. 476
- Brigham and Women's Faulkner Hospital United States
- Broad Institute United States
- Harvard University United States
- Massachusetts General Hospital United States
Inflammation, Male, Mice, Knockout, 570, B7 Antigens, Macrophages, Molecular Sequence Data, 610, Membrane Proteins, Apoptosis, Phosphatidylserines, Autoimmune Diseases, Mice, Phagocytosis, Cell Line, Tumor, Animals, Humans, Female, Amino Acid Sequence, Tumor Suppressor Protein p53, Signal Transduction
Inflammation, Male, Mice, Knockout, 570, B7 Antigens, Macrophages, Molecular Sequence Data, 610, Membrane Proteins, Apoptosis, Phosphatidylserines, Autoimmune Diseases, Mice, Phagocytosis, Cell Line, Tumor, Animals, Humans, Female, Amino Acid Sequence, Tumor Suppressor Protein p53, Signal Transduction
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