PDD 00017273 is a potent inhibitor of Poly(ADP-ribose) Glycohydrolase (PARG), with an IC₅₀ of 26 nM, and a K_D of 1.45 nM^[1][2].

IC50: 26 nM (PARG)^[1]
KD: 1.45 nM (PARG)^[1]

PDD 00017273 is a potent inhibitor of PARG, with an IC₅₀ of 26 nM, and a K_D of 1.45 nM. PDD 00017273 (10 μM) does not inhibit five common Cytochrome P450 enzymes. PDD 00017273 (30 μM) modestly increasess phosphorylated H2AX (γH2AX) intensity, PDD 00017273 also decreases in NAD/H through PARG inhibition after DNA damage. PDD 00017273 suppresses the ZR-75-1 cells carring BRCA1 and BRCA2 wild type, and exhibits less potent activities against MDA-MB-436 cells carry the 5396 + 1G>A mutation in BRCA1^[1]. PDD 00017273 (0.3 μM) inhibits degradation of PAR polymers in MCF7 cells. PDD 00017273 (0.3 μM) also reduces the viability of BRCA1, BRCA2, PALB2, FAM175A, and BARD1 depleted cells. PDD 00017273 stalls replication forks and induces DNA damage that requires homologous recombination (HR) for repair^[2].

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.

514.62

C₂₃H₂₆N₆O₄S₂

1945950-21-9

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 : 25 mg/mL (48.58 mM; ultrasonic and warming and heat to 60°C)

*

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 (4.86 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (4.86 mM，饱和度未知) 的澄清溶液。

  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

• 2.

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

  Solubility: ≥ 2.5 mg/mL (4.86 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (4.86 mM，饱和度未知) 的澄清溶液。

  以 1 mL 工作液为例，取 100 μL 25.0 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: ≥ 2.5 mg/mL (4.86 mM); Clear solution

  此方案可获得 ≥ 2.5 mg/mL (4.86 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 25.0 mg/mL 的澄清 DMSO 储备液加到 900 μL玉米油中，混合均匀。

• [1]. James DI, et al. First-in-Class Chemical Probes against Poly(ADP-ribose) Glycohydrolase (PARG) Inhibit DNA Repair with Differential Pharmacology to AZD2281. ACS Chem Biol. 2016 Nov 18;11(11):3179-3190. Epub 2016 Oct 12.

  [2]. Gravells P, et al. Specific killing of DNA damage-response deficient cells with inhibitors of poly(ADP-ribose) glycohydrolase. DNA Repair (Amst). 2017 Apr;52:81-91.

Briefly, PARG in vitro assays are conducted in a total volume of 15 μL in a standard 384-well format. A total of 5 μL of human full length PARG used at a final reaction concentration of 65 pM, is added to 5 μL of Bt-NAD ribosylated PARP1 substrate at a final reaction concentration of 4.8 nM in assay buffer (50 mM Tris pH 7.4, 0.1 mg/mL BSA, 3 mM EDTA, 0.4 mM EGTA, 1 mM DTT, 0.01% Tween 20, 50 mM KCl). The reaction is incubated at RT for 10 min, and then 5 μL of detection reagent is added. Detection reagent consists of 42 nM mAb anti-6HIS XL665 and 2.25 nM streptavidin europium cryptate, both at 3× working stock concentrations (final concentrations of 14 nM and 0.75 nM, respectively), in detection buffer (50 mM Tris pH 7.4, 0.1 mg/mL BSA and 100 mM KF). Following incubation at RT for 60 min in the dark, TR-FRET signal is measured at λEx 340 nm and λEm 665 nm and λEm 620 nm using a PHERAstar FS plate reader. The ratio is calculated as [Em665/EM620] × 10⁴ for each well and used to calculate percent inhibition for test compounds^[1].

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.

HeLa cells are seeded in 30 μL of media at 1 × 10⁴ cells/mL in Greiner 384-well plates. A total of 16-24 h later, cells are treated with inhibitors (8 pt dose response, 0.01-30 μM, triplicates) or vehicle (DMSO) control. The outer wells are left undosed to account for edge effects. After 72 h, 50 μL of 3.7% formaldehyde/PBS is added to each well, and cells are fixed for 20 min. Cells are then rinsed twice with PBS and stained for 1 h with Hoechst 33342/PBS (1:2000) in the dark. After two further rinses with PBS, images are captured and nuclei counted on a CellInsight. The maximum number of fields are captured from each triplicate well, which approximated to at least 1000 nuclei in vehicle-dosed wells^[1].

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]. James DI, et al. First-in-Class Chemical Probes against Poly(ADP-ribose) Glycohydrolase (PARG) Inhibit DNA Repair with Differential Pharmacology to AZD2281. ACS Chem Biol. 2016 Nov 18;11(11):3179-3190. Epub 2016 Oct 12.

  [2]. Gravells P, et al. Specific killing of DNA damage-response deficient cells with inhibitors of poly(ADP-ribose) glycohydrolase. DNA Repair (Amst). 2017 Apr;52:81-91.