Methylation

Bioinformatics

Biology

Gene

Protein methylation

Histone

Computational biology

Drug discovery

Epigenetics

EZH2

Cancer research

Biochemistry

Medicine

Chromatin

Methyltransferase

Nature Reviews Drug Discovery

Protein lysine methylation is a crucial post-translational modification that regulates the functions of both histone and non-histone proteins. Deregulation of the enzymes or ‘writers’ of protein lysine methylation, lysine methyltransferases (KMTs), is implicated in the cause of many diseases, including cancer, mental health disorders and developmental disorders. Over the past decade, significant advances have been made in developing drugs to target KMTs that are involved in histone methylation and epigenetic regulation. The first of these inhibitors, tazemetostat, was recently approved for the treatment of epithelioid sarcoma and follicular lymphoma, and several more are in clinical and preclinical evaluation. Beyond chromatin, the many KMTs that regulate protein synthesis and other fundamental biological processes are emerging as promising new targets for drug development to treat diverse diseases. Protein lysine methylation is an important post-translational modification of histone and non-histone proteins. In this Review, Gozani and colleagues discuss the role of protein lysine methyltransferases, the ‘writers’ of protein lysine methylation, in a range of diseases, and the progress and potential of targeting these enzymes therapeutically. They also consider the biology of lysine methyltransferases beyond epigenetic regulation as emerging targets for drug discovery.

Epigenetics and beyond: targeting writers of protein lysine methylation to treat disease