Involvement of focal adhesion kinase in cell adhesion force on different substrate rigidity

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We hypothesize that FAK is the rigidity sensor in response to different rigidity of substrates. In present study, we plate MDCK epithelial cell on glass surface, 1kPa, and 30kPa polyacrylamide gels, respectively. The FAK expression for substrate rigidity sensing and adhesion force management was studied by cytodetachment device and fluorescent microscopy. Different expression levels of F AK by gene overexpression (FAK-WT) and knock-out (FRNK) were also used to probe the function of FAK in rigidity sensing. The results indicate that cell spreading area, adhesion force, and work increased with increasing substrate rigidity. Except for cell area and normalized adhesion force, all parameters were significantly different between FAK-WT and FRNK cells. FAK can enhance cell spreading and increase the normalized adhesion force on 30kPa and 1kPa gels. The effect of FAK is weaker on stiffer substrate than on softer matrix.

Original languageEnglish
Title of host publicationNEBEC 2009 - Proceedings of the IEEE 35th Annual Northeast Bioengineering Conference
DOIs
Publication statusPublished - 2009 Sep 21
EventIEEE 35th Annual Northeast Bioengineering Conference, NEBEC 2009 - Boston, MA, United States
Duration: 2009 Apr 32009 Apr 5

Publication series

NameBioengineering, Proceedings of the Northeast Conference
ISSN (Print)1071-121X

Other

OtherIEEE 35th Annual Northeast Bioengineering Conference, NEBEC 2009
CountryUnited States
CityBoston, MA
Period09-04-0309-04-05

All Science Journal Classification (ASJC) codes

  • Bioengineering

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