PR-619 is a broad-range and reversible DUB inhibitor with EC₅₀s of 3.93, 4.9, 6.86, 7.2, and 8.61 μM for USP4, USP8, USP7, USP2, and USP5, respectively. PR-619 induces ER Stress and ER-Stress related apoptosis^[1][2][3][4].

EC50: 3.93 μM (USP4), 4.9 μM (USP8), 6.86 μM (USP7), 7.2 μM (USP2), 8.61 μM (USP5)^[1]

PR-619, a deubiquitylase inhibitor, prevents degradation, indicating KCa3.1 is targeted for degradation by ubiquitylation^[2].
PR-619 affects the microtubule network and led to the accumulation of small punctuated tau deposits around. PR-619 causes the dephosphorylation of tau^[3].
PR-619 (7-12.5 μM) causes an increase in the abundance of ubiquitinated proteins within 24 h. PR-619 leads to the induction of heat shock proteins and to an increase of ubiquitinated proteins^[3].
PR-619 (9 μM) affects the organization of the microtubule network in OLN-t40 cells^[3].
PR-619 (5, 7.5, and 10 μM) induces ER Stress and ER-Stress related apoptosis on T24 and BFTC-905 cells. PR-619 induces polyubiquitination, Bcl-2 downregulation, and concurrent PARP cleavage in a dose-dependent manner. PR-619 induces G0/G1 arrest in UC cells^[4].

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.

PR-619 (10 mg/kg/day) enhances the antitumor effect of Cisplatin on a Cisplatin-Naïve and Cisplatin-resistant UC Xenograft of nude mice^[4].

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.

223.28

C₇H₅N₅S₂

2645-32-1

Room temperature in continental US; may vary elsewhere.

Powder	-20°C	3 years
	4°C	2 years
In solvent	-80°C	6 months
	-20°C	1 month

In Vitro: 

DMSO : ≥ 21 mg/mL (94.05 mM)

* “≥” means soluble, but saturation unknown.

*

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。-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。

In Vivo:

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: 2.5 mg/mL (11.20 mM); Suspended solution; Need ultrasonic

  此方案可获得 2.5 mg/mL (11.20 mM) 的均匀悬浊液，悬浊液可用于口服和腹腔注射。

  以 1 mL 工作液为例，取 100 μL 25.0 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

• [1]. Altun M, et al. Activity-based chemical proteomics accelerates inhibitor development for deubiquitylating enzymes. Chem Biol. 2011 Nov 23;18(11):1401-12.

  [2]. Bertuccio CA, et al. Anterograde trafficking of KCa3.1 in polarized epithelia is Rab1- and Rab8-dependent and recycling endosome-independent. PLoS One. 2014 Mar 14;9(3):e92013.

  [3]. Seiberlich V, et al. The small molecule inhibitor PR-619 of deubiquitinating enzymes affects the microtubule network and causes protein aggregate formation in neural cells: implications for neurodegenerative diseases. Biochim Biophys Acta. 2012 Nov;1823(1

  [4]. Kuan-Lin Kuo, et al. The Deubiquitinating Enzyme Inhibitor PR-619 Enhances the Cytotoxicity of Cisplatin via the Suppression of Anti-Apoptotic Bcl-2 Protein: In Vitro and In Vivo Study. Cells. 2019 Oct 17;8(10):1268.