D-I03 是一种选择性 RAD52 抑制剂，K_d 为 25.8 µM。D-I03 抑制 RAD52 依赖性单链退火 (SSA) 和 D 环形成，IC₅₀ 分别为 5 µM 和 8 µM。D-I03 抑制 BRCA1 和 BRCA2 缺陷细胞的生长，并抑制顺铂诱导的 RAD52 病灶形成，但对 RAD51 无影响。

D-I03 is a selective RAD52 inhibitor with a K d of 25.8 μM. D-I03 specifically inhibits RAD52-dependent single-strand annealing (SSA) and D-loop formation with IC 50 s 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.

Solid

Ki: 25.8 μM (RAD52)

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. has not independently confirmed the accuracy of these methods. They are for reference only.

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 t 1/2 is 23.4 hours, resulting in >1 μM maximal concentration in peripheral blood. has not independently confirmed the accuracy of these methods. They are for reference only.

Room temperature in continental US; may vary elsewhere.

Powder -20°C 3 years；4°C 2 years

[1]. Huang F, et al. Targeting BRCA1- and BRCA2-deficient cells with RAD52 small molecule inhibitors. Nucleic Acids Res. 2016 May 19;44(9):4189-99.
[2]. Hengel SR, et al. Small-Molecule Inhibitors Targeting DNA Repair and DNA Repair Deficiency in Research and Cancer Therapy. Cell Chem Biol. 2017 Sep 21;24(9):1101-1119.

In Vitro: DMSO : 50 mg/mL (116.65 mM; Need ultrasonic)配制储备液