TY - JOUR
T1 - Histone content increases in differentiating embryonic stem cells
AU - Karnavas, Theodoros
AU - Pintonello, Luisa
AU - Agresti, Alessandra
AU - Bianchi, Marco E.
PY - 2014
Y1 - 2014
N2 - 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 towards 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.
AB - 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 towards 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.
UR - http://www.scopus.com/inward/record.url?scp=84906495874&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84906495874&partnerID=8YFLogxK
U2 - 10.3389/fphys.2014.00330
DO - 10.3389/fphys.2014.00330
M3 - Article
AN - SCOPUS:84906495874
VL - 5 AUG
JO - Frontiers in Physiology
JF - Frontiers in Physiology
SN - 1664-042X
M1 - Article 330
ER -