Antiandrogenic, Maspin Induction, and Antiprostate Cancer Activities of Tanshinone IIA and Its Novel Derivatives with Modification in Ring A
摘要:
Expression of metastatic suppressor maspin is lost in advanced prostate cancer. Clinically relevant mutations in androgen receptor (AR) convert antiandrogens into AR agonists, promoting prostate tumor growth. We discovered tanshinone IIA (TS-IIA) is a potent antagonist of mutated ARs and induces maspin expression through AR. TS-IIA suppressed AR expression and induced apoptosis in LNCaP cells. Syntheses of TS-IIA derivatives (1-9) revealed that the 4,4-dimethyl group at ring A is important for TS-IIA's antiandrogenic and maspin induction activities.
Method for identifying modulators of BCRP/ABCG2-mediated ATP release and use of said modulators for treating diseases
申请人:Energeia Biosciences
公开号:EP2829880A1
公开(公告)日:2015-01-28
The present invention belongs to the field of pharmaceutical industry and relates to an in vitro method for identifying test compounds which are capable of modulating adenosine triphosphate (ATP) release from cells by inhibiting or stimulating the Adenosine triphosphate-Binding Cassette Transporter (ABC Transporter) Breast Cancer Resistance Protein (BCRP; ABCG2)-mediated transport of ATP. The invention further relates to compounds having the above capability for treating specific diseases.