The chemical structure of Celastrol and its computational modeling image that demonstrates two carbons, C2 and C6 (red).
Thunder of God Vine (
Tripterygium wilfordii Hook F.),or Lei Gong Teng in Chinese, is a plant that has been used for ages by traditional Chinese medicine to treat inflammatory conditions. In recent years it has been paid great attention by scientists around the world because of its proved efficacies in treating rheumatoid arthritis etc.. Although Celastrol, an active compound extracted from its root bark, induces leukemia cell apoptosis in forpassed research, its anticancer molecular target involved has not been identified yet.
A recent joint research conducted by Prof. YUAN Xiao from the CAS Wuhan Botanical Garden (WBG) and co-workers from US shows that Celastrol is a natural proteasome inhibitor that has a great potential for cancer prevention and treatment. Their findings were reported as cover story in a recent issue of the most prestigious journal
Cancer Research 2006, 66(9) .
Their experiments indicate that Celastrol, a triterpene induces cancer cell apoptosis by inhibiting cancer cells' proteasome. Multiple assays using the animal tumor tissue samples from both early and end time points showed in vivo inhibition of the proteasomal activity and induction of apoptosis after a Celastrol treatment.
The plant resource research of Celastrol has been undergone in WBG for years. The research has proved that the plant resource of Celastrol is abundant in China. To be a new drug in clinical trials, one of the most challenges remains to be addressed regarding with its structure optimization with high efficacy and low toxicity.