Histone content increases in differentiating embryonic stem cells.

Abstract:

:Mouse Embryonic Stem Cells (ESCs) are pluripotent mammalian cells derived from the Inner Cell Mass (ICM) of mouse blastocysts, which give rise to all three embryonic germ layers both in vivo and in vitro. Mouse ESCs have a distinct epigenetic landscape and a more decondensed chromatin compared to differentiated cells. Numerous studies have shown that distinct histone modifications in ESCs serve as hallmarks of pluripotency. However, so far it is still unknown whether the total histone content (as opposed to histone modifications) remains the same in cells of different developmental stage and differentiation capacity. In this work we show that total histone content differs between pluripotent and differentiated cells. In vitro spontaneous differentiation from ESCs to Embryoid Bodies (EBs) and directed differentiation toward neuronal and endodermal cells entails an increase in histone content. Primary MEFs also contain more histones than ESCs. We suggest that the difference in histone content is an additional hallmark of pluripotency, in addition to and besides histone modifications.

journal_name

Front Physiol

journal_title

Frontiers in physiology

authors

Karnavas T,Pintonello L,Agresti A,Bianchi ME

doi

10.3389/fphys.2014.00330

subject

Has Abstract

pub_date

2014-08-28 00:00:00

pages

330

issn

1664-042X

journal_volume

5

pub_type

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