PNU-159682 - ADC Cytotoxin - 生命科學(xué)試劑 - MedChemExpress

1、Hotline: 400-820-3792Inhibitors Agonists Screening Librarieswww.MedChemEPNU-159682Cat. No.: HY-16700CAS No.: 202350-68-3分式: CHNO分量: 641.62作靶點(diǎn): ADC Cytotoxin作通路: Antibody-drug Conjugate/ADC Related儲(chǔ)存式: 4C, stored under nitrogen* In solvent : -80C, 6 months; -20C, 1 month (stored undernitrogen)溶解性數(shù)據(jù)體外

2、實(shí)驗(yàn) DMSO : 100 mg/mL (155.86 mM)H2O : 40% PEG300 5% Tween-80 45% salineSolubility: 2.5 mg/mL (3.90 mM); Clear solution2. 請(qǐng)依序添加每種溶劑： 10% DMSO 90% (20% SBE-CD in saline)Solubility: 2.5 mg/mL (3.90 mM); Suspended solution; Need ultrasonic3. 請(qǐng)依序添加每種溶劑： 10% DMSO 90% corn oilSolubility: 2.5 mg/mL (3.90 mM)

3、; Clear solution1/3 Master of Small Molecules 您邊的抑制劑師www.MedChemEBIOLOGICAL ACTIVITY物活性 PNU-159682種效的蒽環(huán)類新霉素代謝產(chǎn)物，具有突出的細(xì)胞毒性， 種有效的 ADC細(xì)胞毒素。體外研究 PNU-159682 inhibits a panel of human tumor cell lines with IC70 values in the range of 0.07-0.58 nM, and is2,360- to 790-fold and 6,420- to 2,100-fold more pot

4、ent than MMDX and doxorubicin, respectively 1. PNU-159682 (100 M) weakly inhibits topoisomerase II unknotting activity. PNU-159682 (10 M)-DNA adductscontain one or two drug molecules bound to double-stranded DNA 2. PNU-159682 shows cytotoxic effecton CAIX-expressing SKRC-52 cells with IC50 of 25 nM

5、3.體內(nèi)研究 PNU-159682 (15 g/kg, i.v.) shows antitumor activity in mice bearing disseminated murine L1210 leukemiaand in MX-1 human mammary carcinoma xenografts at 4 g/kg 1. PNU-159682 (25 nmol/kg) exhibits apotent antitumor effect in mice bearing SKRC-52 xenografted tumors 3.PROTOCOLKinase Assay 2 The i

6、nhibition of topoisomerase II activity is tested by taking advantage of the ability of this enzyme todecatenate kinetoplast DNA (kDNA); the test is specific for both isoforms of topoisomerase II ( and )because it relies on the conversion of catenated DNA to its decatenated form, which requires doubl

7、e strandcut and ligation uniquely performed by topoisomerase II. The DNA used in this test is the mitochondrial kDNAof Crithidia fasciculata, a catenated network of DNA rings, most of which are 2.5 kb monomers. The kDNAnetworks are large relative to the monomers and do not migrate in the gel remaini

8、ng in the well, while theminicircles can be easily resolved in agarose gel. Both the gel and the running buffer contain the intercalatorethidium bromide, which allows the monitoring of monomers appearance with a UV light source and theresolution of different DNA forms (linear, nicked circular DNA, a

9、nd relaxed DNA monomers), helping toclearly distinguish the linear DNA from the nicked circular DNA. In this test, 200 ng of kDNAs is incubated for1 h at 37C with doxorubicin at 10, 1, or 0.1 M, or with PNU-159682 at 100, 10, or 1 M in the presence of0.025 U of human topoisomerase II in a topoisomer

10、ase II reaction buffer (Tris-HCl pH 7.9 40 mM, KCl 80mM, DTT 5 mM, BSA 15 g/mL, ATP 1 mM, and MgCl2 10 mM). At the end of the incubation period, eachsample is spiked with 3 L of gel loading buffer (xylene cyanol 0.25%, blue bromophenol 0.25%, Ficoll 40018%, and EDTA 6 mM) and then analyzed by agaros

11、e (1%) gel electrophoresis. Runs are performed in TBEbuffer (Tris 89 mM, boric Acid 89 mM, EDTA 2 mM, pH 8.0) in the presence of ethidium bromide 0.5 g/mL.Samples are run overnight at 1 V/cm.MCE has not independently confirmed the accuracy of these methods. They are for reference only.Cell Assay 3 S

12、KRC-52 cells are seeded in 96-well plates in RPMI added with 10% FCS (100 L) at a density of 5000 cellsper well and allowed to grow for 24 h. The medium is replaced with medium containing differentconcentrations of test substance (1:3 dilution steps) and plates are incubated under standard cultureco

13、nditions. After 72 h the medium is removed, MTS cell viability dye (20 L) in 150 L of the medium isadded, the plates are incubated for 2 h under culture conditions and the absorbance at 490 nm measured ona Spectra Max Paradigm multimode plate reader. Experiments are performed in triplicate and avera

14、ge cellviability calculated as measured background corrected absorbance divided by the absorbance of untreated2/3 Master of Small Molecules 您邊的抑制劑師www.MedChemEcontrol wells. IC50 values are determined by fitting data to the four-parameter logistic equation, using a Prism6 software for data analysis.

15、MCE has not independently confirmed the accuracy of these methods. They are for reference only.Animal Four- to six-week-old female CD-1 athymic nude mice are used for evaluation of the activity of PNU-159682Administration 1 against MX-1 human mammary carcinoma xenografts. On day 0, animals (n=14) ar

16、e grafted s.c. with MX-1tumor fragments in the right flank. Eight days later, they are randomly assigned to the drug treatment groupor control group (n=7 mice per group), and treatment is started. PNU-159682 is given i.v. (4 g/kg) accordingto a q7dx3 (every 7 days for three doses) schedule; control

17、animals receive saline injections. Tumor volumeis estimated from measurements done with a caliper; where D and d are the longest and the shortestdiameters, respectively. For ethical reasons, control animals are sacrificed on day 21 when the mean tumorvolume in the group is appr 2,500 mm3; animals re

18、ceiving drug treatment are monitored up to day 50, atwhich point they are sacrificed.MCE has not independently confirmed the accuracy of these methods. They are for reference only.REFERENCES1. Quintieri L, et al. Formation and antitumor activity of PNU-159682, a major metabolite of nemorubicin in human l