Epicatechins Purified from Green Tea (Camellia sinensis) Differentially Suppress Growth of Gender-Dependent Human Cancer Cell Lines

Autor: Naftali Presser, Xing Ye, T. S. Saravanan, Clarence C. Monteclaro, Senthamil R. Selvan, Mepur H. Ravindranath, Stanley A. Brosman
Rok vydání: 2006
Předmět:
Zdroj: Evidence-Based Complementary and Alternative Medicine, Vol 3, Iss 2, Pp 237-247 (2006)
Evidence-based Complementary and Alternative Medicine
Evidence-Based Complementary and Alternative Medicine
ISSN: 1741-4288
1741-427X
DOI: 10.1093/ecam/nel003
Popis: The anticancer potential of catechins derived from green tea is not well understood, in part because catechin-related growth suppression and/or apoptosis appears to vary with the type and stage of malignancy as well as with the type of catechin. Thisin vitrostudy examined the biological effects of epicatechin (EC), epigallocatechin (EGC), EC 3-gallate (ECG) and EGC 3-gallate (EGCG) in cell lines from human gender-specific cancers. Cell lines developed from organ-confined (HH870) and metastatic (DU145) prostate cancer, and from moderately (HH450) and poorly differentiated (HH639) epithelial ovarian cancer were grown with or without EC, EGC, ECG or EGCG. When untreated cells reached confluency, viability and doubling time were measured for treated and untreated cells. Whereas EC treatment reduced proliferation of HH639 cells by 50%, EGCG suppressed proliferation of all cell lines by 50%. ECG was even more potent: it inhibited DU145, HH870, HH450 and HH639 cells at concentrations of 24, 27, 29 and 30 µM, whereas EGCG inhibited DU145, HH870, HH450 and HH639 cells at concentrations 89, 45, 62 and 42 µM. When compared with EGCG, ECG more effectively suppresses the growth of prostate cancer and epithelial ovarian cancer cell lines derived from tumors of patients with different stages of disease.
Databáze: OpenAIRE
Externí odkaz: