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We studied chemotaxis to elastin peptides by bovine ligamentum nuchae fibroblasts to determine whether there is a developmental association between chemotactic responsiveness to elastin and expression of the elastin phenotype. Undifferentiated ligament cells demonstrate chemotactic responsiveness to platelet-derived growth factor and fibronectin, known chemoattractants for fibroblasts, but do not show chemotaxis to elastin peptides. After matrix-induced differentiation, however, young cells display a positive chemotactic response to elastin that persists even after the cells are removed from the matrix substratum. Matrix-induced chemotaxis to elastin could be inhibited selectively by incorporation of bromodeoxyuridine into DNA of undifferentiated cells before (but not after) contact with inducing matrix. These results show that the appearance of chemotaxis to elastin peptides parallels the onset of elastin synthesis and suggests that the acquisition of chemotactic responsiveness to elastin and expression of the elastin phenotype are affected by the same inducing elements or processes and may be closely coupled in development.

the journal of cell biology/the journal of cell biology

Appearance of chemotactic responsiveness to elastin peptides by developing fetal bovine ligament fibroblasts parallels the onset of elastin production.