Induction of apoptosis by green tea catechins in human prostate cancer DU145 cells.
Life Sci
; 68(10): 1207-14, 2001 Jan 26.
Article
em En
| MEDLINE
| ID: mdl-11228105
ABSTRACT
Green tea catechins (GTCs) including (-)-epigallocatechin-3-gallate (EGCG), (-)-epigallocatechin (EGC), (-)-epicatechin-3-gallate (ECG) and (-)-epicatechin (EC) were shown to suppress cell growth and induce apoptosis in various cell systems in addition to their chemo-preventive effect. In this study, except EC which was inactive, green tea extract (TE) and other 3 GTCs were found to suppress the growth and induce apoptosis in human prostate cancer DU145 cells largely through an increase in reactive oxygen species formation and mitochondrial depolarization. The conclusion was supported by the fact that the profiles for different GTCs in growth suppression, apoptosis induction, ROS formation and mitochondrial depolarization are in a similar order, i.e. ECG > EGCG > EGC > EC. Although the molecular mechanisms are still not clear, apoptosis induced by GTCs is not related to the members of BCL-2 family as EGCG did not alter the expression of BCL-2, BCL-X(L) and BAD in DU145 cells.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Neoplasias da Próstata
/
Chá
/
Catequina
/
Anticarcinógenos
/
Apoptose
Limite:
Humans
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Male
Idioma:
En
Revista:
Life Sci
Ano de publicação:
2001
Tipo de documento:
Article