Cycloart-24-ene-1alpha,2alpha,3beta-triol

Cycloartan-24-ene-1α,2α,3β-triol, a cycloartane-type triterpenoid from the resinous exudates of Commiphora myrrha, induces apoptosis in human prostatic cancer PC-3 cells.[Reference: WebLink]

Oncology Reports, 2015, 33(3):1107-1114.

Plant-derived antitumor drugs are currently used in chemotherapy. Cycloartane triterpenoids have shown a cytotoxic effect on human prostate cancer cells. The aim of the present study was to isolate a cycloartane triterpenoid from Commiphora myrrha and evaluate its anticancer potential.
METHODS AND RESULTS:
Cycloartan-24-ene-1α,2α,3β-triol (Cycloart-24-ene-1alpha,2alpha,3beta-triol ,MY-1) was isolated from Commiphora myrrha, and its structure was determined through 1H and 13C nuclear magnetic resonance spectroscopy. The cytotoxic and apoptotic effects of MY-1 on human prostatic cancer PC-3 cells were estimated by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay, flow cytometric analysis and terminal deoxynucleotidyl transferase dUTP nick end-labeling (TUNEL) staining assay, and the expression of apoptotic-related proteins were evaluated by western blotting. MY-1 showed cytotoxic activity on PC-3 cells in a concentration-dependent manner with an IC50 value of 9.6 µM at 24 h. MY-1 induced cell cycle arrest and apoptosis. Western blot analysis revealed that MY-1 regulated the expression levels of B-cell lymphoma 2 (Bcl-2), Bcl-2-associated X protein (Bax), p53 and caspase-3 in the PC-3 cells.
CONCLUSIONS:
These findings indicate that MY-1 exerts significantly pro-apoptotic activity against human hormone-independent prostatic cancer and support MY-1 as a potential anticancer drug.

Antiproliferative effect of cycloartane-type triterpenoid from myrrh against human prostate cancer cells.[Pubmed: 24761675]

Journal of Chinese medicinal materials, 2013, 36(10):1640-1643.

To investigate the antiproliferative effect of cycloartan-24-ene-1alpha, 2alpha, 3beta-triol(Cycloart-24-ene-1alpha,2alpha,3beta-triol ) from Myrrh against human prostate cancer cells.
METHODS AND RESULTS:
Morphological changes of compound-treated human prostate PC3 cells were determined by staining cells with Hoechst. The cell cycle progression and apoptosis were evaluated using flow cytometry assay. Apoptosis related protein levels were analyzed using Western blotting. Treatment of PC3 cells with cycloartan-24-ene-1alpha,2alpha,3beta-triol caused an increase ratio of apoptotic cells, which was verified by flow cytometry. It was also found that cycloartan-24-ene-1alpha,2alpha, 3beta-triol arrested cell cycle at the G0/G1 phase. Apoptosis related proteins, such as BCL-2, BAX, Caspase-3 and Caspase-9 were changed.
CONCLUSIONS:
These observes data indicate that cycloartan-24-ene-1alpha,2alpha,3beta-triol inhibit the proliferation of PC3 cells via induction of apoptosis and cell cycle arrest.