RN-1 dihydrochloride

RN-1 dihydrochloride is a potent, brain-penetrant, irreversible and selective lysine-specific demethylase 1 (LSD1) inhibitor with an IC50 of 70 nM. RN-1 dihydrochloride exhibits selectivity for LSD1 over MAO-A and MAO-B with IC50 values of 0.51 μM and 2.785 μM respectively[1][2].

Research Areas >> Cancer

Research Areas >> Cardiovascular Disease

Signaling Pathways >> Epigenetics >> Histone Demethylase

IC50: 70 nM (LSD1), 0.51 μM (MAO-A) and 2.785 μM (MAO-B)[1]

RN-1 dihydrochloride shows cytotoxic for ovarian cancer cells (SKOV3, OVCAR3, A2780 and cisplatin-resistant A2780cis), with IC50 values of ≈100-200 μM[3].

RN-1 (3-10 mg/kg; i.p.; daily; for 2 or 4 consecutive weeks) dihydrochloride effectively induces fetal hemoglobin (HbF) levels in red blood cells and reduces disease pathology in SCD mice[2]. In C57BL/6 male mice, after intraperitoneal administration of RN-1 dihydrochloride (10 mg/kg), concentrations are detectable up to 24 h post dose in both plasma and brain tissues. The brain/plasma exposure ratio is 88.9. RN-1 dihydrochloride significantly impairs long-term memory, but not short-term memory[1]. Animal Model: Sickle cell disease (SCD) mice[2] Dosage: 3 mg/kg or 10 mg/kg Administration: i.p.; daily; for 2 or 4 consecutive weeks Result: Effectively induced HbF levels in red blood cells and reduced disease pathology in SCD mice.

[1]. Ramesh Neelamegam, et al. Brain-penetrant LSD1 inhibitors can block memory consolidation. ACS Chem Neurosci. 2012 Feb 15;3(2):120-128.

[2]. Shuaiying Cui, et al. The LSD1 inhibitor RN-1 induces fetal hemoglobin synthesis and reduces disease pathology in sickle cell mice. Blood. 2015 Jul 16;126(3):386-96.

[3]. Sergiy Konovalov, et al. Analysis of the levels of lysine-specific demethylase 1 (LSD1) mRNA in human ovarian tumors and the effects of chemical LSD1 inhibitors in ovarian cancer cell lines. J Ovarian Res. 2013 Oct 29;6(1):75.