貨號	規格	價格	上海	北京	武漢	南京
S81353-5mg	98.3%	￥480.00 S81353-5mg ￥480.00 現貨	4 4	-	-	-
S81353-10mg	98.3%	￥760.00 S81353-10mg ￥760.00 現貨	7 7	-	-	-
S81353-25mg	98.3%	￥1520.00 S81353-25mg ￥1520.00 現貨	6 6	-	-	-
S81353-100mg	≥98%	￥3840.00 S81353-100mg ￥3840.00 2-3天	0 貨期：2-3天	-	-	-

產品介紹

CCT245737 is an orally active and selective Chk1 inhibitor (IC50: 1.3 nM); CCT245737 shows much less activity against Chk2 (IC50: 2440 nM).

產品描述：

CCT245737 is an orally active and selective Chk1 inhibitor (IC50: 1.3 nM); CCT245737 shows much less activity against Chk2 (IC50: 2440 nM).

靶點：

Chk

體外研究：

CCT245737 (10 μM) shows >80% inhibition of a panel of 124 kinases. CCT245737 abrogates an etoposide-induced G2 checkpoint in HT29, SW620, MiaPaCa-2, and Calu6 cell lines, with IC50s ranging from 30 to 220 nM.

體內研究：

CCT245737 (150 mg/kg, p.o) alone significantly inhibits tumor growth in an Eμ-Myc mouse model of human B-cell lymphocytic leukemia. CCT245737 (150 mg/kg, p.o.) inhibits tumor growth in combination with gemcitabine (100 mg/kg i.v.) in HT29 colon cancer xenografts. CCT245737 (300 mg/kg, p.o.) also inhibits the gemcitabine (60 mg/kg, i.v.) induced pSer296 CHK1 autophosphorylation at 24 h in SW620 human colon cancer xenografts.

細胞實驗：

Cytotoxicity is determined as the drug concentration that gives 50% inhibition of tumour cell proliferation (GI50) using a 96 h Sulforhodamine B (SRB) assay. Inhibition of intracellular CHK1 activity is measured using a cell-based ELISA for the abrogation of an etoposide-induced G2 checkpoint (mitosis induction assay, MIA). The IC50 for G2 checkpoint abrogation (MIA) is determined in the presence of nocodazole using UCN01 as a positive control. The activity index (AI) is used as a measure of the compounds ability to induce mitosis relative to its toxicity (i.e., ratio of MIA IC50: 96 h SRB GI50). Routine potentiation studies are carried out using a fixed concentration (GI50) of either gemcitabine or SN38 in combination with a range of CCT245737 concentrations to determine the combination GI50 of CCT245737. The ability of CCT245737 to enhance gemcitabine or SN38 cell killing is expressed as a potentiation index (PI) equal to the ratio of the GI50 for CCT245737 alone versus the combination GI50 for CCT245737. P

動物實驗：

Human HT29 colorectal carcinoma cells are injected s.c into the flanks of female NCr athymic mice 6-8 weeks of age. Dosing commenced 5 days after transplantation when tumours reach a mean diameter of 5.5 mm. Gemcitabine (100 mg/kg i.v.) is dosed in saline on days 0, 7 and 14 and compounds 4 (CCT245737) and 41 (150 mg/kg p.o.) in 10% DMSO 20% PEG 400, 5% Tween 80, 65% water, 24 and 48 h after each dose of gemcitabine. Tumours are measured and body weights recorded three times weekly. Animals are culled on an individual basis when tumours reach a predetermined humane endpoint (mean diameter <15 mm).

參考文獻：

1. Liang J, Niu Z, Yu X, et al. Counteracting Genome Instability by p53-dependent Mintosis[J]. bioRxiv. 2020. 2. Liang J, Niu Z, Zhang B, et al. Liang J, Niu Z, Zhang B, et al. p53-dependent elimination of aneuploid mitotic offspring by entosis[J]. Cell Death & Differentiation. 2020: 1-15. 3. Walton MI, et al. The clinical development candidate CCT245737 is an orally active CHK1 inhibitor with preclinical activity in RAS mutant NSCLC and Eμ-MYC driven B-cell lymphoma. Oncotarget. 2016 Jan 19;7(3):2329-42. 4. Osborne JD, et al. Multiparameter Lead Optimization to Give an Oral Checkpoint Kinase 1 (CHK1) Inhibitor Clinical Candidate: (R)-5-((4-((Morpholin-2-ylmethyl)amino)-5-(trifluoromethyl)pyridin-2-yl)amino)pyrazine-2-carbonitrile (CCT245737). J Med Chem. 2016 Jun 9;59(11):5221-37.

溶解性：

Soluble in DMSO、Ethanol

保存條件：

-20℃

配置溶液濃度參考：

	1mg	5mg	10mg
1 mM	2.636 ml	13.181 ml	26.362 ml
5 mM	0.527 ml	2.636 ml	5.272 ml
10 mM	0.264 ml	1.318 ml	2.636 ml
50 mM	0.053 ml	0.264 ml	0.527 ml

注意：

部分產品我司僅能提供部分信息，我司不保證所提供信息的權威性，僅供客戶參考交流研究之用。

參考文獻

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