Systems-level dynamic analyses of fate change in murine embryonic stem cells
Systems-level dynamic analyses of fate change in murine embryonic stem cells
Molecular regulation of embryonic stem cell (ESC) fate involves a coordinated interaction between epigenetic, transcriptional and translational mechanisms. It is unclear how these different molecular regulatory mechanisms interact to regulate changes in stem cell fate. Here we present a dynamic systems-level study of cell fate change in murine ESCs following a well-defined perturbation. Global changes in histone acetylation, chromatin-bound RNA polymerase II, messenger RNA (mRNA), and nuclear protein levels were measured over 5 days after downregulation of Nanog, a key pluripotency regulator. Our data demonstrate how a single genetic perturbation leads to progressive widespread changes in several molecular regulatory layers, and provide a dynamic view of information flow in the epigenome, transcriptome and proteome. We observe that a large proportion of changes in nuclear protein levels are not accompanied by concordant changes in the expression of corresponding mRNAs, indicating important roles for translational and post-translational regulation of ESC fate. Gene-ontology analysis across different molecular layers indicates that although chromatin reconfiguration is important for altering cell fate, it is preceded by transcription-factor-mediated regulatory events. The temporal order of gene expression alterations shows the order of the regulatory network reconfiguration and offers further insight into the gene regulatory network. Our studies extend the conventional systems biology approach to include many molecular species, regulatory layers and temporal series, and underscore the complexity of the multilayer regulatory mechanisms responsible for changes in protein expression that determine stem cell fate
358-362
Lu, Rong
33830d42-b218-4fc3-b376-fe6ed75e49ec
Markowetz, Florian
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Unwin, Richard D.
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Leek, Jeffrey T.
5ff4030a-63ab-440e-a624-9bb918a9412e
Airoldi, Edoardo M.
94431fb5-7e38-4dab-946c-53d0226ecce0
MacArthur, Ben D.
2c0476e7-5d3e-4064-81bb-104e8e88bb6b
Lachmann, Alexander
349577ae-81e3-42f7-ae13-960b8e7eb094
Rozov, Roye
974d5bd1-7f59-428c-8fe0-3ff28d040df8
Ma’ayan, Avi
49ea105e-cb86-4d59-8655-5456e240dc7e
Boyer, Laurie A.
49bdd255-261a-4c3d-adea-8b630d5dc6d7
Troyanskaya, Olga G.
bf859704-40f3-4ad3-9a4d-618ddd9ffc26
Whetton, Anthony D.
d2e48117-3dfc-4713-82dd-afc85bab739c
Lemischka, Ihor R.
3deafa24-f76b-4bfa-90e3-e2b802786bdc
2009
Lu, Rong
33830d42-b218-4fc3-b376-fe6ed75e49ec
Markowetz, Florian
d39d9049-835e-45fa-b0a5-5c4cbad10a5a
Unwin, Richard D.
85201df4-f3ad-454f-9a59-2cc4377c9d25
Leek, Jeffrey T.
5ff4030a-63ab-440e-a624-9bb918a9412e
Airoldi, Edoardo M.
94431fb5-7e38-4dab-946c-53d0226ecce0
MacArthur, Ben D.
2c0476e7-5d3e-4064-81bb-104e8e88bb6b
Lachmann, Alexander
349577ae-81e3-42f7-ae13-960b8e7eb094
Rozov, Roye
974d5bd1-7f59-428c-8fe0-3ff28d040df8
Ma’ayan, Avi
49ea105e-cb86-4d59-8655-5456e240dc7e
Boyer, Laurie A.
49bdd255-261a-4c3d-adea-8b630d5dc6d7
Troyanskaya, Olga G.
bf859704-40f3-4ad3-9a4d-618ddd9ffc26
Whetton, Anthony D.
d2e48117-3dfc-4713-82dd-afc85bab739c
Lemischka, Ihor R.
3deafa24-f76b-4bfa-90e3-e2b802786bdc
Lu, Rong, Markowetz, Florian, Unwin, Richard D., Leek, Jeffrey T., Airoldi, Edoardo M., MacArthur, Ben D., Lachmann, Alexander, Rozov, Roye, Ma’ayan, Avi, Boyer, Laurie A., Troyanskaya, Olga G., Whetton, Anthony D. and Lemischka, Ihor R.
(2009)
Systems-level dynamic analyses of fate change in murine embryonic stem cells.
Nature, 462 (7271), .
(doi:10.1038/nature08575).
(PMID:19924215)
Abstract
Molecular regulation of embryonic stem cell (ESC) fate involves a coordinated interaction between epigenetic, transcriptional and translational mechanisms. It is unclear how these different molecular regulatory mechanisms interact to regulate changes in stem cell fate. Here we present a dynamic systems-level study of cell fate change in murine ESCs following a well-defined perturbation. Global changes in histone acetylation, chromatin-bound RNA polymerase II, messenger RNA (mRNA), and nuclear protein levels were measured over 5 days after downregulation of Nanog, a key pluripotency regulator. Our data demonstrate how a single genetic perturbation leads to progressive widespread changes in several molecular regulatory layers, and provide a dynamic view of information flow in the epigenome, transcriptome and proteome. We observe that a large proportion of changes in nuclear protein levels are not accompanied by concordant changes in the expression of corresponding mRNAs, indicating important roles for translational and post-translational regulation of ESC fate. Gene-ontology analysis across different molecular layers indicates that although chromatin reconfiguration is important for altering cell fate, it is preceded by transcription-factor-mediated regulatory events. The temporal order of gene expression alterations shows the order of the regulatory network reconfiguration and offers further insight into the gene regulatory network. Our studies extend the conventional systems biology approach to include many molecular species, regulatory layers and temporal series, and underscore the complexity of the multilayer regulatory mechanisms responsible for changes in protein expression that determine stem cell fate
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Published date: 2009
Organisations:
Medicine, Mathematics
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Local EPrints ID: 175701
URI: http://eprints.soton.ac.uk/id/eprint/175701
ISSN: 0028-0836
PURE UUID: acb099a7-c3c7-46d2-bd75-e736688a40cf
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Date deposited: 25 Feb 2011 14:49
Last modified: 14 Mar 2024 02:44
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Contributors
Author:
Rong Lu
Author:
Florian Markowetz
Author:
Richard D. Unwin
Author:
Jeffrey T. Leek
Author:
Edoardo M. Airoldi
Author:
Alexander Lachmann
Author:
Roye Rozov
Author:
Avi Ma’ayan
Author:
Laurie A. Boyer
Author:
Olga G. Troyanskaya
Author:
Anthony D. Whetton
Author:
Ihor R. Lemischka
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