The polyoma virus large T binding protein p150 is a transcriptional repressor of c-MYC.
basic_science · Level V
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- Record sourced from PubMed, PMID 23029531.
- Also identified by DOI 10.1371/journal.pone.0046486 and PMC identifier PMC2937017.
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Abstract
p150, product of the SALL2 gene, is a binding partner of the polyoma virus large T antigen and a putative tumor suppressor. p150 binds to the nuclease hypersensitive element of the c-MYC promoter and represses c-MYC transcription. Overexpression of p150 in human ovarian surface epithelial cells leads to decreased expression, and downregulation to increased expression, of c-MYC. c-MYC is repressed upon restoration of p150 to ovarian carcinoma cells. Induction of apoptosis by etoposide results in recruitment of p150 to the c-MYC promoter and to repression of c-MYC. Analysis of data in The Cancer Genome Atlas shows negative correlations between SALL2 and c-MYC expression in four common solid tumor types.