The dual PI3K mTOR inhibitor NVP BEZ235 induces tumor regression in a genetically engineered mouse model of PIK3CA wild type colorectal cancer <a href=http://nolvadex.one/>arimidex vs tamoxifen</a> For example, GPx1 has been reported to prevent oxidative DNA mutations, which in turn may prevent the development of tumors 42, and research shows that overexpression of GPx1 can reduce tumor growth, indicating its inhibitory effect in tumorigenesis 43