AZD-5991 是一种有效的选择性 Mcl-1 抑制剂，FRET 实验检测的 IC₅₀ 为 0.7 nM， SPR 实验检测的 K_d 为 0.17 nM。

AZD-5991 is a potent and selective Mcl-1 inhibitor with an IC 50 of 0.7 nM in FRET assay and a K d of 0.17 nM in surface plasmon resonance (SPR) assay.

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Mcl-1 0.7 nM (IC50) Mcl-1 0.17 nM (Kd)p

The selectivity of AZD-5991 is evaluated against pro-survival Bcl-2 family members using FRET assays. AZD-5991 is selective for Mcl-1 (IC50 0.72?nM, Ki=200?pM) vs. Bcl-2 (IC50=20?μM, Ki=6.8?μM), Bcl-xL (IC50=36?μM, Ki=18?μM), Bcl-w (IC50=49?μM, Ki=25?μM), and Bfl-1 (IC50=24?μM, Ki=12?μM). MOLP-8, MV4-11, and NCI-H23 cells are treated with AZD5991 (EC50=0.033, 0.024, 0.19?μM, respectively).AZD5991 binds directly to Mcl-1 and induces rapid apoptosis in cancer cells, most notably myeloma and acute myeloid leukemia, by activating the Bak-dependent mitochondrial apoptotic pathway. AZD5991 reduces the levels of Mcl-1 protein in AZD5991-sensitive but not in AZD5991-resistant MM cell lines further supporting the notion that activation of caspases by AZD5991 reduces

A single intravenous (i.v.) dose of AZD5991 leads to a dose-dependent antitumor effect ranging from tumor growth inhibition (TGI) to tumor regression (TR). Ten days after treatment, AZD5991 shows 52% and 93% TGI (p<0.0001) at 10 and 30?mg/kg, respectively. At the same time point, AZD5991 at 60?mg/kg leads to 99% TR with no detectable tumors in 6 out of 7 mice, while complete TR is seen in 7 out of 7 mice in the 100?mg/kg dose group. AZD5991 also shows a dose-dependent duration of response with tumors in the 100?mg/kg group growing back later than those in the 60?mg/kg group. The magnitude of in vivo tumor efficacy is correlated with activation of caspase-3 in the tumor and concentration of AZD5991 in plasma. Treatment with AZD5991 was well tolerated at all dose levels with no significant body weight loss. A single dose of AZD5991 36 days after the first dose causes tumor re

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[1]. Tron AE, et al. Discovery of Mcl-1-specific inhibitor AZD5991 and preclinical activity in multiple myeloma and acute myeloid leukemia. Nat Commun. 2018 Dec 17;9(1):5341.

In Vitro: DMSO : 25 mg/mL (37.19 mM; Need ultrasonic)配制储备液