Identification of urushiols as the major active principle of the Siddha herbal medicine Semecarpus Lehyam: Anti-tumor agents for the treatment of breast cancer.

Abstract:

:Breast cancer (BCa) is the most commonly occurring cancer in women, comprising almost one third of all malignancies. Previously we reported that the n-hexane fraction (hSL) of the Siddha herbal medicine, Semecarpus Lehyam, relatively sensitized estrogen receptor-negative (ER(-)) BCa when compared to estrogen receptor-positive (ER(+)) BCa cells. In this study we used a bioassay-guided fractionation approach leading to a simplified fraction of hSL that effectively sensitized both ER(+) (MCF-7) and ER(-) (MDA-231) BCa cells. Further bioassay-guided isolation led to the purification of three potent anti-cancer components from hSL which significantly induced apoptosis in both the BCa cell lines. Their structures were identified through NMR and mass spectroscopic analysis as (7;Z,10;Z)-3-pentadeca-7,10-dienyl-benzene-1,2-diol (1), (8;Z)-3-pentadec-10-enyl-benzene-1,2-diol (2) and 3-pentadecyl-benzene-1,2-diol (3). Compounds (1) and (2) turned out to be more active than (3). The overall results of this study suggest that these major components of hSL may be solely responsible for the anti-tumor effect of SL.

journal_name

Pharm Biol

journal_title

Pharmaceutical biology

authors

Zhao W,Zhu L,Srinivasan S,Damodaran C,Rohr J

doi

10.1080/13880200902942410

subject

Has Abstract

pub_date

2009-09-01 00:00:00

pages

886-893

issue

9

eissn

1388-0209

issn

1744-5116

journal_volume

47

pub_type

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