摘要:
Two distinct methods are disclosed and claimed for synthesizing glyceollin I plus glyceollin II as a mixture and as their pure forms. Stereochemical isomers and various synthetic intermediates are also synthesized and claimed for their novel compositions of matter. All compounds and their mixtures are claimed for use in formulations that are useful to treat or prevent cancer, or that have utility as selective estrogen receptor modulators, such formulations including enhanced or medical foods, dietary supplements and ethical pharmaceutical agents.
摘要:
Two distinct methods are disclosed and claimed for synthesizing glyceollin I plus glyceollin II as a mixture and as their pure forms. Stereochemical isomers and various synthetic intermediates are also synthesized and claimed for their novel compositions of matter. All compounds and their mixtures are claimed for use in formulations that are useful to treat or prevent cancer, or that have utility as selective estrogen receptor modulators, such formulations including enhanced or medical foods, dietary supplements and ethical pharmaceutical agents.
摘要:
The flavonoid family of phytochemicals, particularly those derived from soy, has received attention regarding their hormonal activity and their effects on human health and disease. The types and amounts of these compounds in soy and other plants are controlled by both constitutive expression and stress-induced biosynthesis. The health benefits of soy may therefore be dependent upon the amounts of the various hormonally active phytochemicals present. We have identified increased biosynthesis of the isoflavonoid phytoalexin compounds, Glyceollins I, Il and III, in soy plants grown under stressed conditions (elicited soy), which exhibit marked anti-estrogenic effects on ER function. Here we demonstrate that specific glyceollins, isolated from elicited soy, displayed anti-estrogenic activity, suppressing basal and estrogen stimulated colony formation of ER-positive estrogen dependent breast cancer cells and inhibiting ER-dependent gene expression of progesterone receptor (PgR) and stromal derived factor-1 (SDFI/CXCL^). Examining the effects of glyceollin on in vivo tumor formation/growth we demonstrate the ability of glyceollins to significantly suppress basal and estrogen-stimulated tumor growth of ER-positive MCF-7 breast and BG-1 ovarian carcinoma cells in ovariectomized female nude mice. We further demonstrate that the effects of glyceollins on suppression of tumor growth correlate with inhibition of estrogen stimulated PgR expression. In contrast to the uterotropic activity of tamoxifen the glyceollins displayed no uterine agonist activity. The Glyceollin (l-lll) compounds may represent an important component of the health effects of soy as well as represent novel anti-estrogens useful in the prevention or treatment of breast and ovarian carcinoma.
摘要:
Two distinct methods are disclosed and claimed for synthesizing glyceollin I plus glyceollin II as a mixture and as their pure forms. Stereochemical isomers and various synthetic intermediates are also synthesized and claimed for their novel compositions of matter. All compounds and their mixtures are claimed for use in formulations that are useful to treat or prevent cancer, or that have utility as selective estrogen receptor modulators, such formulations including enhanced or medical foods, dietary supplements and ethical pharmaceutical agents.
摘要:
The present disclosure demonstrates the molecular effects of glyceollins on human prostate cancer cell LNCaP to further elucidate its potential effects on prostate cancer prevention. The glyceollins inhibited LNCaP cell growth similar to that of the soy isofiavone genistein. The growth inhibitory effects of the glyceollins appeared to be due to an inhibition on Gl /S progression and correlated with an up-regulation of cyclin-dependent kinase inhibitor Al and Bl mRNA and protein levels. By contrast, genistein only up-regulates cyclin-dependent kinase inhibitor Al. In addition, glyceollin treatments led to down-regulated mRNA levels for androgen responsive genes. In contrast to genistein, this effect of glyceollins on androgen responsive genes appeared to be mediated through modulation of an estrogen- but not androgen-mediated pathway. Hence, the glyceollins exerted multiple effects on LNCaP cells that may be considered cancer preventive and the mechanisms of action appeared to be different from other soy-derived phytochemicals.
摘要:
The present disclosure demonstrates the molecular effects of glyceollins on human prostate cancer cell LNCaP to further elucidate its potential effects on prostate cancer prevention. The glyceollins inhibited LNCaP cell growth similar to that of the soy isofiavone genistein. The growth inhibitory effects of the glyceollins appeared to be due to an inhibition on Gl /S progression and correlated with an up-regulation of cyclin-dependent kinase inhibitor Al and Bl mRNA and protein levels. By contrast, genistein only up-regulates cyclin-dependent kinase inhibitor Al. In addition, glyceollin treatments led to down-regulated mRNA levels for androgen responsive genes. In contrast to genistein, this effect of glyceollins on androgen responsive genes appeared to be mediated through modulation of an estrogen- but not androgen-mediated pathway. Hence, the glyceollins exerted multiple effects on LNCaP cells that may be considered cancer preventive and the mechanisms of action appeared to be different from other soy-derived phytochemicals.
摘要:
The flavonoid family of phytochemicals, particularly those derived from soy, has received attention regarding their hormonal activity and their effects on human health and disease. The types and amounts of these compounds in soy and other plants are controlled by both constitutive expression and stress-induced biosynthesis. The health benefits of soy may therefore be dependent upon the amounts of the various hormonally active phytochemicals present. We have identified increased biosynthesis of the isoflavonoid phytoalexin compounds, Glyceollins I, Il and III, in soy plants grown under stressed conditions (elicited soy), which exhibit marked anti-estrogenic effects on ER function. Here we demonstrate that specific glyceollins, isolated from elicited soy, displayed anti-estrogenic activity, suppressing basal and estrogen stimulated colony formation of ER-positive estrogen dependent breast cancer cells and inhibiting ER-dependent gene expression of progesterone receptor (PgR) and stromal derived factor-1 (SDFI/CXCL^). Examining the effects of glyceollin on in vivo tumor formation/growth we demonstrate the ability of glyceollins to significantly suppress basal and estrogen-stimulated tumor growth of ER-positive MCF-7 breast and BG-1 ovarian carcinoma cells in ovariectomized female nude mice. We further demonstrate that the effects of glyceollins on suppression of tumor growth correlate with inhibition of estrogen stimulated PgR expression. In contrast to the uterotropic activity of tamoxifen the glyceollins displayed no uterine agonist activity. The Glyceollin (l-lll) compounds may represent an important component of the health effects of soy as well as represent novel anti-estrogens useful in the prevention or treatment of breast and ovarian carcinoma.