2012年5月アーカイブ

Chromatin-targeting small molecules cause class-specific transcriptional changes in pancreatic endocrine cells

I will present the paper by Stefan Kubicek et al. (Stuart Schreiber lab) published on PNAS in February this year.
Although we believe that KMTs and KDMs are more specific than HATs, HDACs,
DNMTs and PRMTs and that therefore epigenetics drugs targeting KMTs/KDMs are
more beneficial, nobody has actually compared specificity of these drugs.
Stefan Kubicek et al now shows that KMT inhibitors indeed modulate a restricted subset of genes. I think this paper is quite important for us who are involved in development of KMT/KDM inhibitors. Thus decided to present this paper.

担当:米沢 Mat
A Long ncRNA Links Copy Number Variation to a Polycomb / Trithorax Epigenetic Switch in FSHD Muscular Dystrophy

Daphne S. Cabianca, Valentina Casa, Beatrice Bodega, Alexandros Xynos, Enrico Ginelli, Yujiro Tanaka, and Davide Gabellini

担当:宮澤
Histone H3 Lysine 56 Methylation Regulates DNA Replication through Its Interaction with PCNA

Yongxin Yu, Chunying Song, Qiongyi Zhang, Peter A. DiMaggio, Benjamin A. Garcia, Autumn York,
Michael F. Carey, and Michael Grunstein

Key findings of this paper are as follows.
 -H3K56 monomethylation exists in mammalian cells
 -G9a/KMT1C is required for H3K56me1 both in vivo and in vitro
 -Disruption of G9a or H3K56 impairs DNA replication
 -H3K56me1 associates with the replication processivity factor PCNA primarily in G1 phase of the cell cycle and, directly, in vitro
 -H3K56me1 is a chromatin docking site for PCNA prior to its function in DNA replication.

担当:合田

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