Dataset Information

Giantsos-Adams2013 - Growth of glycocalyx under static conditions

ABSTRACT: Giantsos-Adams2013 - Growth of glycocalyx under static conditions This model is described in the article: Heparan Sulfate Regrowth Profiles Under Laminar Shear Flow Following Enzymatic Degradation. Giantsos-Adams KM, Koo AJ, Song S, Sakai J, Sankaran J, Shin JH, Garcia-Cardena G, Dewey CF. Cell Mol Bioeng 2013 Jun; 6(2): 160-174 Abstract: The local hemodynamic shear stress waveforms present in an artery dictate the endothelial cell phenotype. The observed decrease of the apical glycocalyx layer on the endothelium in atheroprone regions of the circulation suggests that the glycocalyx may have a central role in determining atherosclerotic plaque formation. However, the kinetics for the cells' ability to adapt its glycocalyx to the environment have not been quantitatively resolved. Here we report that the heparan sulfate component of the glycocalyx of HUVECs increases by 1.4-fold following the onset of high shear stress, compared to static cultured cells, with a time constant of 19 h. Cell morphology experiments show that 12 h are required for the cells to elongate, but only after 36 h have the cells reached maximal alignment to the flow vector. Our findings demonstrate that following enzymatic degradation, heparan sulfate is restored to the cell surface within 12 h under flow whereas the time required is 20 h under static conditions. We also propose a model describing the contribution of endocytosis and exocytosis to apical heparan sulfate expression. The change in HS regrowth kinetics from static to high-shear EC phenotype implies a differential in the rate of endocytic and exocytic membrane turnover. This model is hosted on BioModels Database and identified by: MODEL1609100001. To cite BioModels Database, please use: BioModels Database: An enhanced, curated and annotated resource for published quantitative kinetic models. To the extent possible under law, all copyright and related or neighbouring rights to this encoded model have been dedicated to the public domain worldwide. Please refer to CC0 Public Domain Dedication for more information.

SUBMITTER: Kristina Giantsos-Adams

PROVIDER: MODEL1609100001 | BioModels | 2016-09-28

REPOSITORIES: BioModels

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			Action	DRS
	MODEL1609100001?filename=MODEL1609100001-biopax2.owl	Owl
	MODEL1609100001?filename=MODEL1609100001-biopax3.owl	Owl
	MODEL1609100001?filename=MODEL1609100001.m	Other
	MODEL1609100001?filename=MODEL1609100001.pdf	Pdf
	MODEL1609100001?filename=MODEL1609100001.png	Other

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Publications

Heparan Sulfate Regrowth Profiles Under Laminar Shear Flow Following Enzymatic Degradation.

Giantsos-Adams Kristina M KM Koo Andrew Jia-An AJ Song Sukhyun S Sakai Jiro J Sankaran Jagadish J Shin Jennifer H JH Garcia-Cardena Guillermo G Dewey C Forbes CF

Cellular and molecular bioengineering 20130220 2

The local hemodynamic shear stress waveforms present in an artery dictate the endothelial cell phenotype. The observed decrease of the apical glycocalyx layer on the endothelium in atheroprone regions of the circulation suggests that the glycocalyx may have a central role in determining atherosclerotic plaque formation. However, the kinetics for the cells' ability to adapt its glycocalyx to the environment have not been quantitatively resolved. Here we report that the heparan sulfate component o ...[more]

PMID: 23805169

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Project description:Giantsos-Adams2013 - Growth of glycocalyx under static conditions This model is described in the article: Heparan Sulfate Regrowth Profiles Under Laminar Shear Flow Following Enzymatic Degradation. Giantsos-Adams KM, Koo AJ, Song S, Sakai J, Sankaran J, Shin JH, Garcia-Cardena G, Dewey CF. Cell Mol Bioeng 2013 Jun; 6(2): 160-174 Abstract: The local hemodynamic shear stress waveforms present in an artery dictate the endothelial cell phenotype. The observed decrease of the apical glycocalyx layer on the endothelium in atheroprone regions of the circulation suggests that the glycocalyx may have a central role in determining atherosclerotic plaque formation. However, the kinetics for the cells' ability to adapt its glycocalyx to the environment have not been quantitatively resolved. Here we report that the heparan sulfate component of the glycocalyx of HUVECs increases by 1.4-fold following the onset of high shear stress, compared to static cultured cells, with a time constant of 19 h. Cell morphology experiments show that 12 h are required for the cells to elongate, but only after 36 h have the cells reached maximal alignment to the flow vector. Our findings demonstrate that following enzymatic degradation, heparan sulfate is restored to the cell surface within 12 h under flow whereas the time required is 20 h under static conditions. We also propose a model describing the contribution of endocytosis and exocytosis to apical heparan sulfate expression. The change in HS regrowth kinetics from static to high-shear EC phenotype implies a differential in the rate of endocytic and exocytic membrane turnover. This model is hosted on BioModels Database and identified by: MODEL1609100001. To cite BioModels Database, please use: BioModels Database: An enhanced, curated and annotated resource for published quantitative kinetic models. To the extent possible under law, all copyright and related or neighbouring rights to this encoded model have been dedicated to the public domain worldwide. Please refer to CC0 Public Domain Dedication for more information.