| abstract |
Disclosed is an agent for inhibiting the transporter activity of an estrone-3-sulfate transporter, an agent for inhibiting the growth of breast cancer cells, or an agent for the treatment of breast cancer, which does not need to be incorporated in cells, has excellent drug delivery property and has few side effects. The agent comprises at least one component selected from genistein, quercetin, ginkgolide C, theaflavin, theaflavin 3-o-gallate, chalcone, rutin, daidzein, daidzin, flavanone, flavonol, geraldol, hesperetin, hespereridine, ipriflavone, luteolin-7-o-glucoside, methoxychalcone, 4'-methyl-7-methoxy-isoflavone, 5-morin, myricetin, naringenin, naringenin-7-glycoside, naringin, neohesperidin dihydrochalcone, nomilin, primuletin, poncirin, scutellarein, catechin hydrate, and chemically modified products thereof. |