The good life turned off tumour-promoting genes (known as oncogenes) -including several that are the target of efforts to develop anti-cancer drugs.

It is known that many related products of oncogenes and anti - oncogenes take part in the signal transduction of grow, proliferation and differentiation of cells.

The effects of AFP could be blocked by anti AFP monoclonal antibody. The results indicated that AFP could regulate the growth of HeLa cells through enhancing the expression of these oncogenes.