ZFAT binds to centromeres to control noncoding RNA transcription through the KAT2B-H4K8ac-BRD4 axis

© The Author(s) 2020. Published by Oxford University Press on behalf of Nucleic Acids Research..

Centromeres are genomic regions essential for faithful chromosome segregation. Transcription of noncoding RNA (ncRNA) at centromeres is important for their formation and functions. Here, we report the molecular mechanism by which the transcriptional regulator ZFAT controls the centromeric ncRNA transcription in human and mouse cells. Chromatin immunoprecipitation with high-throughput sequencing analysis shows that ZFAT binds to centromere regions at every chromosome. We find a specific 8-bp DNA sequence for the ZFAT-binding motif that is highly conserved and widely distributed at whole centromere regions of every chromosome. Overexpression of ZFAT increases the centromeric ncRNA levels at specific chromosomes, whereas its silencing reduces them, indicating crucial roles of ZFAT in centromeric transcription. Overexpression of ZFAT increases the centromeric levels of both the histone acetyltransferase KAT2B and the acetylation at the lysine 8 in histone H4 (H4K8ac). siRNA-mediated knockdown of KAT2B inhibits the overexpressed ZFAT-induced increase in centromeric H4K8ac levels, suggesting that ZFAT recruits KAT2B to centromeres to induce H4K8ac. Furthermore, overexpressed ZFAT recruits the bromodomain-containing protein BRD4 to centromeres through KAT2B-mediated H4K8ac, leading to RNA polymerase II-dependent ncRNA transcription. Thus, ZFAT binds to centromeres to control ncRNA transcription through the KAT2B-H4K8ac-BRD4 axis.

Medienart:

E-Artikel

Erscheinungsjahr:

2020

Erschienen:

2020

Enthalten in:

Zur Gesamtaufnahme - volume:48

Enthalten in:

Nucleic acids research - 48(2020), 19 vom: 04. Nov., Seite 10848-10866

Sprache:

Englisch

Beteiligte Personen:

Ishikura, Shuhei [VerfasserIn]
Nakabayashi, Kazuhiko [VerfasserIn]
Nagai, Masayoshi [VerfasserIn]
Tsunoda, Toshiyuki [VerfasserIn]
Shirasawa, Senji [VerfasserIn]

Links:

Volltext

Themen:

BRD4 protein, human
Cell Cycle Proteins
EC 2.3.1.48
Histones
Journal Article
KAT2B protein, human
P300-CBP Transcription Factors
RNA, Untranslated
Research Support, Non-U.S. Gov't
Transcription Factors
ZFAT protein, human
ZFAT protein, mouse

Anmerkungen:

Date Completed 19.11.2020

Date Revised 19.11.2020

published: Print

Citation Status MEDLINE

doi:

10.1093/nar/gkaa815

funding:

Förderinstitution / Projekttitel:

PPN (Katalog-ID):

NLM31567637X