Details

Autor(en) / Beteiligte

• Fang, Rui
• Barbera, Andrew J.
• Xu, Yufei
• Rutenberg, Michael
• Leonor, Thiago
• Bi, Qing
• Lan, Fei
• Mei, Pinchao
• Yuan, Guo-Cheng
• Lian, Christine
• Peng, Junmin
• Cheng, Dongmei
• Sui, Guangchao
• Kaiser, Ursula B.
• Shi, Yang
• Shi, Yujiang Geno

Titel

Human LSD2/KDM1b/AOF1 Regulates Gene Transcription by Modulating Intragenic H3K4me2 Methylation

Ist Teil von

• Molecular cell, 2010-07, Vol.39 (2), p.222-233

Ort / Verlag

United States: Elsevier Inc

Erscheinungsjahr

2010

Link zum Volltext

Quelle

MEDLINE

Beschreibungen/Notizen

• Dynamic histone H3K4 methylation is an important epigenetic component of transcriptional regulation. However, most of our current understanding of this histone mark is confined to the regulation of transcriptional initiation. We now show that human LSD2/KDM1b/AOF1, the human homolog of LSD1, is an H3K4me1/2 demethylase that specifically regulates histone H3K4 methylation within intragenic regions of its target genes. Genome-wide mapping reveals that LSD2 associates predominantly with the gene bodies of actively transcribed genes, but is markedly absent from promoters. Depletion of endogenous LSD2 results in an increase of H3K4me2 as well as a decrease of H3K9me2 at LSD2-binding sites and a consequent dysregulation of target gene transcription. Furthermore, characterization of the LSD2 complex reveals that LSD2 forms active complexes with euchromatic histone methyltransferases G9a and NSD3 as well as cellular factors involved in transcription elongation. These data provide a possible molecular mechanism linking LSD2 to transcriptional regulation after initiation. ► Human LSD2/KDM1b binds to gene bodies but not promoters ► LSD2 associates with H3K36me3 and demethylates H3K4me2 of gene bodies ► LSD2 complex contributes to the dynamics of H3K4me2/H3K9me2 of intragenic regions ► Elongation factors link LSD2 function to the regulation of active gene transcription