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Laminin inhibits human keratinocyte migration

✍ Scribed by David T. Woodley; Peter M. Bachmann; Edward J. O'Keefe

Publisher
John Wiley and Sons
Year
1988
Tongue
English
Weight
791 KB
Volume
136
Category
Article
ISSN
0021-9541

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✦ Synopsis

A quantitative migration assay for human keratinocytes was developed to assess the influence of extracellular matrix molecules on cell motility independently from their effect on cell proliferation. Fibronectin and collagen types I and IV markedly promoted keratinocyte migration, but albumin, type V collagen, and heparan sulfate proteoglycan had little effect. In contrast, laminin inhibited keratinocyte motility and dramatically reduced type IV collagen-induced migration in a concentration-dependent manner. Laminin was not toxic, since it had no apparent effect on morphology, growth, or ability of cells to be passaged. Laminin, a major component of the lamina lucida, may inhibit motility of keratinocytes in vivo. Absence of contact with laminin, which accompanies wounding, may facilitate motility and healing in the epidermis.

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