DS-437

• CAT Number: I006549
• CAS Number: 1674364-87-4
• Molecular Formula: C15H23N7O4S
• Molecular Weight: 397.45
• Purity: ≥95%
• Synonyms: 1-[2-[[(2S,3S,4R,5R)-5-(6-aminopurin-9-yl)-3,4-dihydroxyoxolan-2-yl]methylsulfanyl]ethyl]-3-ethylurea
• InChI: InChI=1S/C15H23N7O4S/c1-2-17-15(25)18-3-4-27-5-8-10(23)11(24)14(26-8)22-7-21-9-12(16)19-6-20-13(9)22/h6-8,10-11,14,23-24H,2-5H2,1H3,(H2,16,19,20)(H2,17,18,25)/t8-,10-,11-,14-/m1/s1
• InChIKey: CACMCLIHCDTJHL-IDTAVKCVSA-N
• SMILES: CCNC(=O)NCCSCC1C(C(C(O1)N2C=NC3=C(N=CN=C32)N)O)O

DS-437 is a dual PRMT5/7 inhibitor (IC50s of PRMT5/7=6 μM). DS-437 is selective for PRMT5 and PRMT7 over 29 other human protein-, DNA-, and RNA-methyltransferases. DS-437 is a S-adenosylmethionine (SAM)-competitive inhibitor of PRMT5. DS-437 also inhibits DNMT3A and DNMT3B, with IC50s of 52 and 62 μM, respectively. DS-437 inhibits the methylation of FOXP3[1][2].
DS-437 was able to inhibit methylation of an H4[1–24] peptide by the PRMT5–MEP50 complex under balanced conditions (cofactor and substrate concentrations set at their respective?Km?values) in a dose-dependent manner with an IC50?of 5.9 ± 1.4 μM[1].?
DS-437 increased total CD8+?and CD8+ PD-1+ T cells[2].
DS-437 (10 mg/kg; i.p.; 5 times a week) has some beneficial effects on inhibiting tumor growth. The combination of DS-437 and the anti-p185erbB2/neu?antibody 4D5 had even more dramatic effects[1].

Reference

[1]. Smil D, et al. Discovery of a Dual PRMT5-PRMT7 Inhibitor.ACS Med Chem Lett. 2015 Mar 2;6(4):408-12.
 [Content Brief]

[2]. Nagai Y, et al. PRMT5 Associates With the FOXP3 Homomer and When Disabled Enhances Targetedp185erbB2/neu Tumor Immunotherapy.Front Immunol. 2019 Feb 8;10:174.
 [Content Brief]