Document Detail


Study of local hydrodynamic environment in cell-substrate adhesion using side-view μPIV technology.
MedLine Citation:
PMID:  22363477     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Tumor cell adhesion to the endothelium under shear flow conditions is a critical step that results in circulation-mediated tumor metastasis. This study presents experimental and computational techniques for studying the local hydrodynamic environment around adherent cells and how local shear conditions affect cell-cell interactions on the endothelium in tumor cell adhesion. To study the local hydrodynamic profile around heterotypic adherent cells, a side-view flow chamber assay coupled with micro particle imaging velocimetry (μPIV) technique was developed, where interactions between leukocytes and tumor cells in the near-endothelial wall region and the local shear flow environment were characterized. Computational fluid dynamics (CFD) simulations were also used to obtain quantitative flow properties around those adherent cells. Results showed that cell dimension and relative cell-cell positions had strong influence on local shear rates. The velocity profile above leukocytes and tumor cells displayed very different patterns. Larger cell deformations led to less disturbance to the flow. Local shear rates above smaller cells were observed to be more affected by relative positions between two cells.
Authors:
Yi Fu; Robert Kunz; Jianhua Wu; Cheng Dong
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.     Date:  2012-02-17
Journal Detail:
Title:  PloS one     Volume:  7     ISSN:  1932-6203     ISO Abbreviation:  PLoS ONE     Publication Date:  2012  
Date Detail:
Created Date:  2012-02-24     Completed Date:  2012-06-29     Revised Date:  2013-06-26    
Medline Journal Info:
Nlm Unique ID:  101285081     Medline TA:  PLoS One     Country:  United States    
Other Details:
Languages:  eng     Pagination:  e30721     Citation Subset:  IM    
Affiliation:
School of Bioscience and Bioengineering, South China University of Technology, Guangzhou, China.
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MeSH Terms
Descriptor/Qualifier:
Adult
Biomechanics
Cell Adhesion
Cell Line, Tumor
Cellular Microenvironment*
Computer Simulation
Humans
Hydrodynamics*
Leukocytes, Mononuclear / cytology*
Neoplasms / pathology*
Reproducibility of Results
Rheology / methods*
Grant Support
ID/Acronym/Agency:
CA-125707/CA/NCI NIH HHS; UL1 TR000127/TR/NCATS NIH HHS
Comments/Corrections

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