estrogen receptor

07/19/2011 - 06:15

Using a new in vivo screening system, Whitehead Institute researchers have identified a protein in the serine biosynthesis pathway that is essential in estrogen receptor (ER)-negative breast cancer—a notoriously difficult disease to treat associated with low five-year survival rates. According to the researchers, when expression of the gene that codes for this protein—phosphoglycerate dehydrogenase or PHGDH—is suppressed in tumors and cell lines with an overabundance of the protein, the rate of cellular growth declines markedly.