Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 211.6 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 278.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Deprecated: Implicit conversion from float 278.79999999999995 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534
Warning: imagejpeg(C:\Inetpub\vhosts\kidney.de\httpdocs\phplern\28863148
.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 PLoS+Comput+Biol
2017 ; 13
(9
): e1005713
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
Twit Text #
English Wikipedia
A conceptual and computational framework for modelling and understanding the
non-equilibrium gene regulatory networks of mouse embryonic stem cells
#MMPMID28863148
Greaves RB
; Dietmann S
; Smith A
; Stepney S
; Halley JD
PLoS Comput Biol
2017[Sep]; 13
(9
): e1005713
PMID28863148
show ga
The capacity of pluripotent embryonic stem cells to differentiate into any cell
type in the body makes them invaluable in the field of regenerative medicine.
However, because of the complexity of both the core pluripotency network and the
process of cell fate computation it is not yet possible to control the fate of
stem cells. We present a theoretical model of stem cell fate computation that is
based on Halley and Winkler's Branching Process Theory (BPT) and on Greaves et
al.'s agent-based computer simulation derived from that theoretical model. BPT
abstracts the complex production and action of a Transcription Factor (TF) into a
single critical branching process that may dissipate, maintain, or become
supercritical. Here we take the single TF model and extend it to multiple
interacting TFs, and build an agent-based simulation of multiple TFs to
investigate the dynamics of such coupled systems. We have developed the
simulation and the theoretical model together, in an iterative manner, with the
aim of obtaining a deeper understanding of stem cell fate computation, in order
to influence experimental efforts, which may in turn influence the outcome of
cellular differentiation. The model used is an example of self-organization and
could be more widely applicable to the modelling of other complex systems. The
simulation based on this model, though currently limited in scope in terms of the
biology it represents, supports the utility of the Halley and Winkler branching
process model in describing the behaviour of stem cell gene regulatory networks.
Our simulation demonstrates three key features: (i) the existence of a critical
value of the branching process parameter, dependent on the details of the
cistrome in question; (ii) the ability of an active cistrome to "ignite" an
otherwise fully dissipated cistrome, and drive it to criticality; (iii) how
coupling cistromes together can reduce their critical branching parameter values
needed to drive them to criticality.