BETd-260 (ZBC 260) 是由Cereblon配体和BET配体相连的PROTAC，在白血病细胞 RS4;11 中，在 30 pM 的低浓度下，能够降低 BRD4 蛋白活性。BETd-260 能显著抑制肝细胞癌 HCC 细胞的活性并诱导细胞凋亡 (apoptosis)。

BETd-260 (ZBC 260) is a PROTAC connected by ligands for Cereblon and BET, with as low as 30 pM against BRD4 protein in RS4;11 leukemia cell line. BETd-260 potently suppresses cell viability and robustly induces apoptosis in hepatocellular carcinoma (HCC) cells.

Solid

BRD4 <30 pM (IC50) BRD2 30-100 pM (IC

BETd-260 (ZBC260; Compound 23) is capable of inducing degradation of BRD2, BRD3, and BRD4 proteins at 30–100 pM in the RS4;11 leukemia cells. BETd-260 shows inhibitory activity against the growth of RS4;11 leukemia cells and MOLM-13 cells with IC50s of 51 pM and 2.2 nM, respectively, and induces apoptosis in both RS4;11 and MOLM-13 cell lines at 3-10 nM.
BETd-260 reciprocally modulates the expression of several apoptotic genes in HCC cells, i.e., suppressing the expression of anti-apoptotic Mcl-1, Bcl-2, c-Myc, and XIAP, whereas increasing the expression of pro-apoptotic Bad. has not independently confirmed the accuracy of these methods. They are for reference only.

BETd-260 (5 mg/kg, i.v., every other day, thrice a week for 3 weeks) causes rapid tumor regression with a maximum of >90% regression in mice bearing RS4;11 xenograft tumors, and with no body weight loss or other signs of toxicity in mice. BETd-260 (5 mg/kg, i.v.) degrades the BRD2, BRD3, and BRD4 proteins for more than 24 h, with robust cleavage of PARP and caspase-3, and strong down-regulation of c-Myc protein in RS4;11 xenograft mice model. has not independently confirmed the accuracy of these methods. They are for reference only.

Room temperature in continental US; may vary elsewhere.

-80°C, protect from light, stored under nitrogen

[1]. Zhou B, et al. Discovery of a Small-Molecule Degrader of Bromodomain and Extra-Terminal (BET) Proteins with Picomolar Cellular Potencies and Capable of Achieving Tumor Regression. J Med Chem. 2018 Jan 25;61(2):462-481.
[2]. Zhang H, et al. Targeting BET Proteins With a PROTAC Molecule Elicits Potent Anticancer Activity in HCC Cells. Front Oncol. 2020;9:1471. Published 2020 Jan 14.

In Vitro: DMSO : 25 mg/mL (31.29 mM; Need ultrasonic)配制储备液