THZ1 Hydrochloride

THZ1 Hydrochloride is a selective and potent covalent CDK7 inhibitor with an IC₅₀ of 3.2 nM. THZ1 Hydrochloride also inhibits the closely related kinases CDK12 and CDK13 and downregulates MYC expression^[1][2].

THZ1 inhibits Jurkat cell and Loucy cell with IC₅₀ of 50 nM, and 0.55 nM, respectively. THZ1 demonstrates time-dependent inhibition of CDK7 in vitro and covalent binding of intracellular CDK7. THZ1 (9, 27, 83, 250, 750, and 2500 nM) inhibits CDK12 but at higher concentrations compared to CDK7. THZ1 (1 μM) irreversibly inhibits RNAPII CTD and CAK phosphorylation. THZ1 (2.5 µM) irreversibly inhibits RNAPII CTD phosphorylation by covalently targeting a unique cysteine located outside the kinase domain of CDK7 in Hela S3 cells. THZ1 (250 nM) causes decreased cellular proliferation and an increase in apoptotic index with concomitant reduction in anti-apoptotic proteins, most notably MCL-1 and XIAP in T-ALL cell lines^[1].
All genotypically-distinct human (hSCLC) cell lines exhibit high sensitivity to THZ1, with an IC₅₀ in the range of 5-20 nM^[3].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

THZ1 (10 mg/kg) demonstrates potent killing of primary chronic lymphocytic leukemia (CLL) cells and anti-proliferative activity against primary TALL cells and in vivo against a human T-ALL xenograft^[1].
THZ1 (10 mg/kg, i.v.) inhibits tumor growth in a mouse model of human MYCN-amplified NB and shows no toxicity^[4].
THZ1 (10 mg/kg, i.p.) completely suppresses oesophageal squamous cell carcinoma tumour growth in vivo without loss of body weight or other common toxic effects^[5].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

602.51

C₃₁H₂₉Cl₂N₇O₂

Room temperature in continental US; may vary elsewhere.

4°C, sealed storage, away from moisture

*In solvent : -80°C, 6 months; -20°C, 1 month (sealed storage, away from moisture)

DMSO : 22.5 mg/mL (37.34 mM; Need ultrasonic and warming)

H₂O : < 0.1 mg/mL (ultrasonic;warming;heat to 60°C) (insoluble)

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 (sealed storage, away from moisture)。-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: ≥ 2.17 mg/mL (3.60 mM); Clear solution

• 2.

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

  Solubility: 2.17 mg/mL (3.60 mM); Suspended solution; Need ultrasonic

• 3.

  请依序添加每种溶剂： 10% DMSO 90% corn oil

  Solubility: ≥ 2.17 mg/mL (3.60 mM); Clear solution

• [1]. Kwiatkowski N, et al. Targeting transcription regulation in cancer with a covalent CDK7 inhibitor. Nature. 2014 Jul 31;511(7511):616-20. [Content Brief]

  [2]. Jiang YY, et al. Targeting super-enhancer-associated oncogenes in oesophageal squamous cell carcinoma. Gut. 2016 May 10. pii: gutjnl-2016-311818. [Content Brief]

  [3]. Christensen CL, et al. Targeting transcriptional addictions in small cell lung cancer with a covalent CDK7 inhibitor. Cancer Cell. 2014 Dec 8;26(6):909-22. [Content Brief]

  [4]. Chipumuro, et al. CDK7 inhibition suppresses super-enhancer-linked oncogenic transcription in MYCN-driven cancer. Cell. 2014 Nov 20;159(5):1126-39. ? [Content Brief]