BI 2536 is a dual PLK1 and BRD4 inhibitor with IC₅₀s of 0.83 and 25 nM, respectively^[1]. BI-2536 suppresses IFNB (encoding IFN-β) gene transcription^[4].

Exceeding a 100-fold concentration range starting at 10 nM, BI 2536 causes HeLa cells to accumulate with a 4N DNA content, indicative of a cell-cycle block in either G2 phase or mitosis. In addition to HeLa cells, BI 2536 potently inhibits the proliferation of a panel of 32 human cancer cell lines, representing diverse organ derivations (including carcinomas of the breast, colon, lung, pancreas, and prostate, melanomas, and hematopoietic cancers) and varied patterns of tumor suppressor or oncogene mutations (including RB1, TP53, PTEN, andKRAS status). The half-maximal effective concentration (EC₅₀) values in this cell panel ranged 2-25 nM, whereas a concentration of 100 nM of BI 2536 is typically sufficient for inducing a complete mitotic arrest. The proliferation of exponentially growing hTERT-RPE1, human umbilical vein endothelial cells (HUVECs), and normal rat kidney (NRK) cells is blocked at EC₅₀values ranging 12-31 nM, indicating a comparable sensitivity of cycling nontransformed cells to BI 2536^[3].

上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.

BI 2536 (40-50 mg/kg, i.v.) blocks the growth of human cancer xenografts in immunodeficient, nu/nu mice. Consecutive cycles of 40-50 mg/kg BI 2536 given i.v. once or twice per week are found to be highly efficacious in diverse xenograft models, such as the HCT 116 colon cancer with complete tumor suppression with the twice per week schedule (treated versus the control (T/C) value 0.3%) and a T/C value of 16% with once per week treatment; both schedules are well-tolerated, as judged by clinical signs and absence of major body-weight changes^[3].

上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.

521.65

C₂₈H₃₉N₇O₃

755038-02-9

Room temperature in continental US; may vary elsewhere.

4°C, protect from light

*In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)

DMSO : 65 mg/mL (124.60 mM; Need ultrasonic)

0.1 M HCL : 25 mg/mL (47.92 mM; ultrasonic and adjust pH to 4 with HCl)

请根据产品在不同溶剂中的溶解度选择合适的溶剂配制储备液；一旦配成溶液，请分装保存，避免反复冻融造成的产品失效。
储备液的保存方式和期限：-80°C, 6 months; -20°C, 1 month (protect from light)。-80°C 储存时，请在 6 个月内使用，-20°C 储存时，请在 1 个月内使用。

请根据您的实验动物和给药方式选择适当的溶解方案。以下溶解方案都请先按照 In Vitro 方式配制澄清的储备液，再依次添加助溶剂：

——为保证实验结果的可靠性，澄清的储备液可以根据储存条件，适当保存；体内实验的工作液，建议您现用现配，当天使用； 以下溶剂前显示的百
分比是指该溶剂在您配制终溶液中的体积占比；如在配制过程中出现沉淀、析出现象，可以通过加热和/或超声的方式助溶

• 1.

  请依序添加每种溶剂： 10% DMSO    40% PEG300    5% Tween-80    45% saline

  Solubility: ≥ 3.25 mg/mL (6.23 mM); Clear solution

  此方案可获得 ≥ 3.25 mg/mL (6.23 mM，饱和度未知) 的澄清溶液。

  以 1 mL 工作液为例，取 100 μL 32.5 mg/mL 的澄清 DMSO 储备液加到 400 μL PEG300 中，混合均匀；向上述体系中加入50 μL Tween-80，混合均匀；然后继续加入 450 μL生理盐水定容至 1 mL。

  将 0.9 g 氯化钠，完全溶解于 100 mL ddH₂O 中，得到澄清透明的生理盐水溶液

• 2.

  请依序添加每种溶剂： 10% DMSO    90% (20% SBE-β-CD in saline)

  Solubility: ≥ 3.25 mg/mL (6.23 mM); Clear solution

  此方案可获得 ≥ 3.25 mg/mL (6.23 mM，饱和度未知) 的澄清溶液。

  以 1 mL 工作液为例，取 100 μL 32.5 mg/mL 的澄清 DMSO 储备液加到 900 μL 20% 的 SBE-β-CD 生理盐水水溶液中，混合均匀。

  将 2 g 磺丁基醚 β-环糊精加入 5 mL 生理盐水中，再用生理盐水定容至 10 mL，完全溶解，澄清透明
• 3.

  请依序添加每种溶剂： 10% DMSO    90% corn oil

  Solubility: ≥ 2.08 mg/mL (3.99 mM); Clear solution

  此方案可获得 ≥ 2.08 mg/mL (3.99 mM，饱和度未知) 的澄清溶液，此方案不适用于实验周期在半个月以上的实验。

  以 1 mL 工作液为例，取 100 μL 20.8 mg/mL 的澄清 DMSO 储备液加到 900 μL玉米油中，混合均匀。

• [1]. Lénárt P, et al. The Small-Molecule Inhibitor BI 2536 Reveals Novel Insights into Mitotic Roles of Polo-like Kinase 1. Curr Biol. 2007 Feb 20;17(4):304-15.

  [2]. Chen L, et al. BRD4 Structure-Activity Relationships of Dual PLK1 Kinase/BRD4 Bromodomain Inhibitor BI-2536. ACS Med Chem Lett. 2015 May 18;6(7):764-9.

  [3]. Steegmaier M, et al. BI 2536, a Potent and Selective Inhibitor of Polo-like Kinase 1, Inhibits Tumor Growth In Vivo. Current Biology (2007), 17(4), 316-322.

  [4]. Malik N, et al. Suppression of IFN β gene transcription by inhibitors of bromodomain and extra-terminal (BET) family members. Biochem J. 2015 Jun 15;468(3):363-72.

Cell proliferation assays are performed by incubation in the presence of various concentrations of BI 2536 (10 nM-1 μM) for 72 hr, and cell growth is assessed by the measurement of Alamar Blue dye conversion in a fluorescence spectrophotometer. Effective concentrations at which cellular growth is inhibited by 50% (EC₅₀) are extrapolated from the dose-response curve fit^[3].

上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.

Mice^[3]
Female BomTac:NMRI-Foxn1nu mice are grafted subcutaneously with HCT 116 colon-carcinoma, NCI-H460, or A549 lung-carcinoma cells by subcutaneous injection, respectively, of 2×10⁶, 1×10⁶, and 1×10⁷ cells into the flank of each mouse. When tumors reached a volume of approximately 50 mm³, animals are pair-matched into treatment and control groups of ten mice each. In regression experiments, treatment is not initiated until the mean tumor volume reached 500 mm³. BI 2536 is injected intravenously into the tail vein at the indicated dose and schedule. The administration volume is 10 mL per kg body weight. Tumor volumes are determined three times a week with a caliper. The results are converted to tumor volume (mm³) by the following formula: length×width²×π/6. The weight of the mice is determined as an indicator of tolerability on the same days. For statistical analysis, the treatment group is compared with the vehicle control group in a one-sided (decreasing) exact Wilcoxon test.

上海金畔生物科技有限公司 has not independently confirmed the accuracy of these methods. They are for reference only.

• [1]. Lénárt P, et al. The Small-Molecule Inhibitor BI 2536 Reveals Novel Insights into Mitotic Roles of Polo-like Kinase 1. Curr Biol. 2007 Feb 20;17(4):304-15.

  [2]. Chen L, et al. BRD4 Structure-Activity Relationships of Dual PLK1 Kinase/BRD4 Bromodomain Inhibitor BI-2536. ACS Med Chem Lett. 2015 May 18;6(7):764-9.

  [3]. Steegmaier M, et al. BI 2536, a Potent and Selective Inhibitor of Polo-like Kinase 1, Inhibits Tumor Growth In Vivo. Current Biology (2007), 17(4), 316-322.

  [4]. Malik N, et al. Suppression of IFN β gene transcription by inhibitors of bromodomain and extra-terminal (BET) family members. Biochem J. 2015 Jun 15;468(3):363-72.