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SETD2: from chromatin modifier to multipronged regulator of the genome and beyond

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出版社

SPRINGER BASEL AG
DOI: 10.1007/s00018-022-04352-9

关键词

SETD2; Set2; Histone methyltransferase; Chromatin; Transcription; Cancer

资金

  1. Dutch Research Council [NWO-VICI-016.130.627]
  2. Dutch Cancer Society [KWF-NKI2018-1/11490]

向作者/读者索取更多资源

Histone modifying enzymes have important roles in cellular processes and disease. SETD2, for example, methylates histone H3 on lysine 36 (H3K36) during transcription and also methylates non-histone substrates. Understanding the multiple roles of SETD2 is crucial for understanding its role in disease, particularly in cancer where it is frequently inactivated.
Histone modifying enzymes play critical roles in many key cellular processes and are appealing proteins for targeting by small molecules in disease. However, while the functions of histone modifying enzymes are often linked to epigenetic regulation of the genome, an emerging theme is that these enzymes often also act by non-catalytic and/or non-epigenetic mechanisms. SETD2 (Set2 in yeast) is best known for associating with the transcription machinery and methylating histone H3 on lysine 36 (H3K36) during transcription. This well-characterized molecular function of SETD2 plays a role in fine-tuning transcription, maintaining chromatin integrity, and mRNA processing. Here we give an overview of the various molecular functions and mechanisms of regulation of H3K36 methylation by Set2/SETD2. These fundamental insights are important to understand SETD2's role in disease, most notably in cancer in which SETD2 is frequently inactivated. SETD2 also methylates non-histone substrates such as alpha-tubulin which may promote genome stability and contribute to the tumor-suppressor function of SETD2. Thus, to understand its role in disease, it is important to understand and dissect the multiple roles of SETD2 within the cell. In this review we discuss how histone methylation by Set2/SETD2 has led the way in connecting histone modifications in active regions of the genome to chromatin functions and how SETD2 is leading the way to showing that we also have to look beyond histones to truly understand the physiological role of an 'epigenetic' writer enzyme in normal cells and in disease.

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