Rabbit corneal epithelial cells adhere to two distinct heparin-binding synthetic peptides derived from fibronectin

作者: D. L. Mooradian , L. T. Furcht , A. P. N. Skubitz , J. B. Mccarthy , J. D. Cameron

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摘要: Fibronectin plays an important role in corneal reepithelialization during wound healing. In this study, rabbit epithelial (RCE) cell adhesion to fibronectin was further defined using proteolytic fragments of and chemically synthesized peptides derived from the amino acid sequence fibronectin. RCE cells adhere intact fibronectin, 75 kD fragment containing RGDS (Arg-GlyAsp-Ser) adhesion-promoting sequence, 33/66 promoting/heparin-binding The partially inhibited suggesting that these represent distinct sites used by Two FN-C/H-I (YEKPGSPPREWPRPRPGV) FN-C/H-III (YRVRVTPKEKTGPMKE), directly promoted cells. As evidence play a we have shown soluble on surfaces coated with fragments. addition, polyclonal IgG against FN-C/ H-I blocked fragments, confirming sequences within contrast, two previously described which variety types, FN-C/H-II (KNNQKSEPLIGRKKT) CS-1 (DELPQLVTLPHPNLHGPEILDVPST), did not support adhesion. These data suggest has complex molecular basis is mediated multiple domains, at least are located car boxy 1-terminal heparin-binding/cell domains Invest Ophthalmol Vis Sci 33:3034-3040,1992

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