1A-116 是一种对 W56 残基具有特异性的 Rac1 抑制剂，能有效防止 EGF 诱导的 Rac1 激活，并阻断 Rac1-P-Rex1 的相互作用。1A-116 能以昼夜节律依赖的方式诱导细胞凋亡并抑制细胞的增殖、迁移和周期进展。1A-116 在体内也具有较高的抗癌细胞转移活性。

1A-116, a potent Rac1 inhibitor, is specific for W56 residues, can prevent EGF-induced Rac1 activation and block Rac1-P-Rex1 interaction. 1A-116 can induce apoptosis and inhibit cell proliferation, migration and cycle progression in a concentration-dependent manner. 1A-116 also demonstrates a high antimetastatic activity in vivo.

Solid

IC50: 4 μM (F3II); 21 μM (MDA-MB-231).
Rac1
Apoptosis

1A-116 (48 h) inhibits F3II and MDA-MB-231 cells proliferation in a concentration-dependent manner with IC50s of 4 μM and 21 μM, respectively.
1A-116 (1, 10 μM; 12 h) dramatically impaires Rac1 activation, and reduces Rac1-GTP intracellular levels in a concentration-dependent manner in F3II cells.
1A-116 (50, 100 μM; 12 h) blocks Rac1-P-Rex1 interaction.
1A-116 (20 μM; 5 h intervals over 25 h) inhibits LN229 cells proliferation in a circadian manner.
1A-116 (10 μM; 16 h) significantly reduces cell migration at 10 HPS which exhibits temporal dependence. (HPS: After the serum shock, the elapsed time (in hours) is recorded as the hours post-synchronization (HPS)).
1A-116 (20, 50 μM; 6 h) induces cells apoptosis and in a circadian-dependent manner.
1A-116 (100 nM) decreases the thickness of the epidermal layers of Vav2 and Rac1-mediated hyperplas

1A-116 (3 mg/kg; i.v.; once a day for 21 days) demonstrates a high antimetastatic activity with about 60% formation reduction of total metastatic lung colonies in vivo and shows no apparent toxicity.
1A-116 (20 mg/kg; i.p.; once a day, 73 days for ZT12, 68 days for ZT3) increases survival time when treated at ZT12 compare to ZT3 in tumor-bearing mice. (ZT: Zeitgeber time 12 (ZT12) defined as the time of lights off (local time 7 p.m.) and ZT0 defined as lights on (local time 7 a.m.)).
1A-116 shows good oral availability. 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]. Cardama GA, et al. Preclinical development of novel Rac1-GEF signaling inhibitors using a rational design approach in highly aggressive breast cancer cell lines. Anticancer Agents Med Chem. 2014;14(6):840-51.
[2]. Trebucq LL, et al. Timing of Novel Drug 1A-116 to Circadian Rhythms Improves Therapeutic Effects against Glioblastoma. Pharmaceutics. 2021 Jul 16;13(7):1091.

In Vitro: DMSO : 100 mg/mL (325.40 mM; Need ultrasonic)配制储备液