BETd-246 is a second-generation and PROTAC-based BET bromodomain (BRD) inhibitor connected by ligands for Cereblon and BET, exhibiting superior selectivity, potency and antitumor activity.
IC50&Target
BET BRD.
体外研究
BETd-246 treatment (0-100 nM, 1-3 h) causes a dose-dependent depletion of BRD2, BRD3 and BRD4 in representative TNBC cell lines with 30-100 nM for 1 h or with 10-30 nM for 3 h incubation.
BETd-246 (100 nM, 24/48 hours) displays strong growth inhibition and apoptosis induction activity in MDA-MB-468 cell lines. BETd-246 induces a rapid and time-dependent downregulation of MCL1 protein in all the TNBC cell lines evaluated. BETd-246 induces much stronger apoptosis than BETi-211.
BETd-246 (100 nM, 24 hours) induces pronounced cell cycle arrest and apoptosis in TNBC cell lines.
Cell Proliferation Assay
Cell Line:
MDA-MB-468 cells
Concentration:
100 nM
Incubation Time:
24 or 48 hours
Result:
Displayed strong growth inhibition and apoptosis induction activity in TNBC cell lines.
Cell Cycle Analysis
Cell Line:
Human TNBC cells
Concentration:
100 nM
Incubation Time:
24 hours
Result:
Induced pronounced cell cycle arrest and apoptosis in TNBC cell lines.
Western Blot Analysis
Cell Line:
Human TNBC cells
Concentration:
0-100 nM
Incubation Time:
1-3 hours
Result:
Caused a dose-dependent depletion of BRD2, BRD3 and BRD4.
体内研究
BETd-246 (5 mg/kg, IV, 3 times per week for 3 weeks) treatment effectively inhibits WHIM24 tumor growth, similar to the antitumor activity of BETi-211 with higher dosage and more frequently administration. The treatment of 10 mg/kg induces partial tumor regression during treatment without apparent toxicity. BETd-246 has very limited drug exposure in the xenograft tumor tissue in MDA-M-231and MDA-MB-468 models.
Animal Model:
“Washington Human in Mouse (WHIM)” (PDX) model developed from a patient with treatment-resistant breast cancer (ESR, PR- and HER2-)).
Dosage:
5, 10 mg/kg
Administration:
IV, 3 times per week for 3 weeks.
Result:
Effectively inhibited WHIM24 tumor growth.
分子式
C48H55N11O10
分子量
946.02
CAS号
2140289-17-2
运输条件
Room temperature in continental US; may vary elsewhere.