| Bioactivity | 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]. | ||||||||||||
| Invitro | 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]. | ||||||||||||
| In Vivo | 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]. Animal Model: | ||||||||||||
| Name | DS-437 | ||||||||||||
| CAS | 1674364-87-4 | ||||||||||||
| Formula | C15H23N7O4S | ||||||||||||
| Molar Mass | 397.45 | ||||||||||||
| Appearance | Solid | ||||||||||||
| Transport | Room temperature in continental US; may vary elsewhere. | ||||||||||||
| Storage |
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| Reference | [1]. Smil D, et al. Discovery of a Dual PRMT5-PRMT7 Inhibitor.ACS Med Chem Lett. 2015 Mar 2;6(4):408-12. [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. |