Abstract
Integrins are a family of heterodimeric glycoproteins consisting of alpha and beta subunits that noncovalently interact to form cell surface adhesion receptors. The objective of this study was to identify integrins in human dental pulp cells and determine their role in human dental pulp cell attachment to the biological active molecules, laminin and fibronectin. Integrin expression was studied by immunoblot and immunoprecipitation using monoclonal integrin antibodies. The role of integrin in human dental pulp cell adhesion on laminin and fibronectin was determined by inhibition of cell adhesion with those antibodies. This study found human dental pulp cells expressed alpha 1, alpha 3, alpha 5, alpha 6, alpha v, and beta 1 integrin subunits. The adhesion of human dental pulp cells to laminin and fibronectin was not inhibited by monoclonal antibody to any subunit, except that anti-beta 1 antibody inhibited pulp cells adhesion on laminin. These data provide information for further studying the role of integrins in dental pulp cell biological function.
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