M. Cairney et Ms. Campo, THE SYNERGISM BETWEEN BOVINE PAPILLOMAVIRUS TYPE-4 AND QUERCETIN IS DEPENDENT ON THE TIMING OF EXPOSURE, Carcinogenesis, 16(8), 1995, pp. 1997-2001
Exposure to the flavonoid quercetin and transfection with bovine papil
lomavirus type 4 (BPV-4) DNA lead to oncogenic transformation of prima
ry bovine cells. Here we show that the synergism between quercetin and
BPV-4 (or its E7 oncogene) is stronger the shorter the interval betwe
en the two treatments. Quercetin immortalizes transformed cells, confe
rs anchorage-independent growth and induces tumorigenicity in cells tr
ansfected only with the E7 oncogene.