Discovery of a PROTAC degrader for METTL3-METTL14 complex

Cell Chem Biol. 2024 Jan 18;31(1):177-183.e17. doi: 10.1016/j.chembiol.2023.12.009. Epub 2024 Jan 8.

Abstract

N6-methyladenosine (m6A) methylation is the most abundant type of RNA modification that is mainly catalyzed by the METTL3-METTL14 methyltransferase complex. This complex has been linked to multiple cancers and is considered a promising therapeutic target for acute myeloid leukemia (AML). However, only a few METTL3 inhibitors targeting the catalytic activity were developed recently. Here, we present the discovery of WD6305 as the potent and selective proteolysis-targeting chimera (PROTAC) degrader of METTL3-METTL14 complex. WD6305 suppresses m6A modification and the proliferation of AML cells, and promotes apoptosis much more effectively than its parent inhibitor. WD6305 also affects a variety of signaling pathways related to the development and proliferation of AML. Collectively, our study reveals PROTAC degradation of METTL3-METTL14 complex as a potential anti-leukemic strategy and provides desirable chemical tool for further understanding METTL3-METTL14 protein functions.

Keywords: Degrader; METTL3; Methyltransferase; PROTAC; m(6)A.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adenosine*
  • Humans
  • Leukemia, Myeloid, Acute* / drug therapy
  • Leukemia, Myeloid, Acute* / genetics
  • Methylation
  • Methyltransferases / genetics
  • Methyltransferases / metabolism

Substances

  • Adenosine
  • Methyltransferases
  • METTL3 protein, human
  • METTL14 protein, human