| Bioactivity | SR7826 is a class of bis-aryl urea derived potent, selective and orally active LIM kinase (LIMK) inhibitor with an IC50 of 43 nM for LIMK1. SR7826 is >100-fold more selective for LIMK1 than ROCK and JNK kinases[1]. | ||||||||||||
| Invitro | In the profiling against a panel of 61 kinases, SR7826 (compound 18b) at 1 μM inhibits only Limk1 and STK16 with ≥80% inhibition. SR7826 is highly efficient in inhibiting cell-invasion/migration in PC-3 cells. SR7826 (compound 18b) inhibits cofilin phosphorylation in A7r5 (IC50 = 470 nM) and PC-3 cells (IC50 < 1 µM)[1].SR7826 (1 μM) inhibits contractions of prostate strips, which were induced by electrical field stimulation and inhibits cofilin phosphorylation in prostate tissues and cultured stromal cells (WPMY-1). In WPMY-1 cells, SR7826 causes breakdown of actin filaments and reduced viability[3]. | ||||||||||||
| In Vivo | SR7826 (10 mg/kg; oral gavage; once daily; for 11 days; hAPPJ20 mice) treatment significantly reduces the phosphorylation of cofilin at Ser3. SR7826 also increases both apical and basal thin spine density significantly in hAPPJ20 mice over mock-treated animals[2].The plasma pharmacokinetics studies on rats are investigated. After intravenous injection, the PK properties of SR7826 (compound 18b; 1mg/kg) with a Cl of 5.2 mL/min/kg, a T1/2 of 2.2h, an AUC of 8.4 μM*h and a Cmax of 7.7 μM, and has 36% oral bioavailability in rats (oral administration; 2mg/kg)[1]. Animal Model: | ||||||||||||
| Name | SR7826 | ||||||||||||
| CAS | 1219728-20-7 | ||||||||||||
| Formula | C22H21N5O2 | ||||||||||||
| Molar Mass | 387.43 | ||||||||||||
| Appearance | Solid | ||||||||||||
| Transport | Room temperature in continental US; may vary elsewhere. | ||||||||||||
| Storage |
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| Reference | [1]. Yan Yin, et al. Bis-aryl urea derivatives as potent and selective LIM kinase (Limk) inhibitors. J Med Chem. 2015 Feb 26;58(4):1846-61. [2]. Benjamin W Henderson, et al. Pharmacologic inhibition of LIMK1 provides dendritic spine resilience against β-amyloid. Sci Signal. 2019 Jun 25;12(587):eaaw9318. [3]. Qingfeng Yu, et al. Inhibition of human prostate smooth muscle contraction by the LIM kinase inhibitors, SR7826 and LIMKi3. Br J Pharmacol. 2018 Jun;175(11):2077-2096. |