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  • Title: Expression of constitutive and inducible HSP70 and HSP47 is enhanced in cells persistently spread on OPN1 or collagen.
    Author: Sauk JJ, Van Kampen CL, Norris K, Foster R, Somerman MJ.
    Journal: Biochem Biophys Res Commun; 1990 Oct 15; 172(1):135-42. PubMed ID: 2222462.
    Abstract:
    Cells persistently spread on OPN or collagen survive heat shock better than cells transiently spread on fibronectin or tissue culture plates. Thus, a central question is whether constitutively or inducible stress proteins are enhanced in cells grown on adhesive proteins that maintain a persistent spread cell shape. Levels of Hsp 72,73, and colligin/Hsp47 were determined by Western blot analyses. The inducible Hsp 72 was prominently expressed following heat shock in cells grown on OPN or collagen, but not in cells plated on fibronectin coated substratum or on tissue culture plates. Colligin/Hsp 47 and Hsp 73 manifested a similar pattern of expression indicating that these adhesive attachment proteins accommodate cell function through organization of cell architecture.
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