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2016 ; 14
(5
): 1181-1194
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Nac1 Coordinates a Sub-network of Pluripotency Factors to Regulate Embryonic Stem
Cell Differentiation
#MMPMID26832399
Malleshaiah M
; Padi M
; Rué P
; Quackenbush J
; Martinez-Arias A
; Gunawardena J
Cell Rep
2016[Feb]; 14
(5
): 1181-1194
PMID26832399
show ga
Pluripotent cells give rise to distinct cell types during development and are
regulated by often self-reinforcing molecular networks. How such networks allow
cells to differentiate is less well understood. Here, we use integrative methods
to show that external signals induce reorganization of the mouse embryonic stem
cell pluripotency network and that a sub-network of four factors, Nac1, Oct4,
Tcf3, and Sox2, regulates their differentiation into the alternative
mesendodermal and neuroectodermal fates. In the mesendodermal fate, Nac1 and Oct4
were constrained within quantitative windows, whereas Sox2 and Tcf3 were
repressed. In contrast, in the neuroectodermal fate, Sox2 and Tcf3 were
constrained while Nac1 and Oct4 were repressed. In addition, we show that Nac1
coordinates differentiation by activating Oct4 and inhibiting both Sox2 and Tcf3.
Reorganization of progenitor cell networks around shared factors might be a
common differentiation strategy and our integrative approach provides a general
methodology for delineating such networks.