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编 号:F427087
分子式:C23H36N6S
分子量:428.64
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10mM*1mL in DMSO
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1mg
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5mg
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10mg
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25mg
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生物活性:
D-I03 is a selective RAD52 inhibitor with a Kd of 25.8 μM. D-I03 specifically inhibits RAD52-dependent single-strand annealing (SSA) and D-loop formation with IC50s of 5 μM and 8 μM, respectively. D-I03 suppresses growth of BRCA1- and BRCA2-deficient cells and inhibits formation of damage-induced RAD52 foci, but does not effect on RAD51 foci induced by Cisplatin.

体内研究:
D-I03 (50 mg/kg/day; intraperitoneal injection; daily; for 7 days; nu/nu mice) treatment reduces BRCA1-deficient MDA-MB-436 tumor growth. Talazoparib puls D-I03 does not affect the growth of BRCA1-proficient tumors and does not exert any significant toxicity against normal tissues and organs.?Pharmacokinetic and toxicity studies indicates that maximal tolerated dose of D-I03 is ≥50 mg/kg, and t1/2 is 23.4 hours, resulting in >1 μM maximal concentration in peripheral blood.Animal Model:Nu/nu mice injected with BRCA1-deficient MDA-MB-436 cells
Dosage:50 mg/kg/day
Administration:Intraperitoneal injection; daily; for 7 days
Result:Reduced BRCA1-deficient MDA-MB-436 tumor growth.

体外研究:
D-I03 (0-10 μM; on days 1 and 3; Capan-1 and UWB1.289 cells) treatment preferentially suppressed the growth of Capan-1 and UWB1.289 cells in a concentration-dependent manner.?D-I03 inhibits RAD52 foci formation induced by cisplatin in BCR-ABL1-positive BRCA1-deficient 32Dcl3 murine hematopoietic cell line that expresses GFP-RAD52. In the presence of D-I03 (2.5 μM), the fraction of cells with RAD52 foci is decreased, from 38.7% to 171%; at the same time, the fraction of Cisplatin-treated cells without foci is increased from 48.4% to 71.9%.? D-I03 does not effect on RAD51 foci induced by Cisplatin. Also, D-I03 alone induce neither RAD51 foci nor RAD52 foci (in BRCA1-deficient cells) indicating low genotoxicity of D-I03.
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