Fig. 6: Proposed mechanism of correlation between TET1 expression, CGI methylation, and PRC2 regulation on tumor suppressors, including p16.

In normal cells, the function of PRC2 is regulated by the SWI/SNF complex, whereas in tumor cells featuring SWI/SNF LOF mutations in addition to TET1 expression, the recruitment of PRC2 on the p16 promoter is allowed to occur, and suppression of its expression by the H3K27me3 marker is mediated.