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Dev Biol. 1988 Apr;126(2):253-62.

Hemidesmosomes and anchoring fibril collagen appear synchronously during development and wound healing.

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Eye Research Institute of Retina Foundation, Boston, Massachusetts 02114.


Bullous pemphigoid antisera and monoclonal antibodies to type VII collagen were used to localize hemidesmosomes and anchoring fibrils, respectively, in tissues of developing eyes and healing corneal wounds of New Zealand white rabbits. In the 17-day fetal rabbit eye, both antibodies colocalize to the epithelial-stromal junction of the lid and conjunctival region, but neither binds to the cornea, and electron microscopy demonstrates hemidesmosomes only where the antibodies bind. By 20 days of fetal development, the antibodies colocalize in cornea, and, by electron microscopy, hemidesmosomes are shown to be present as well. In healing 7-mm corneal wounds, both antibodies colocalize at the wound periphery within 66 h. By electron microscopy, hemidesmosomes along small segments of basal lamina are also shown to be present at the wound periphery at this time. These demonstrations of the synchronous assembly of hemidesmosomes and anchoring fibrils support the hypothesis of linkage of hemidesmosomes through the basement membrane to anchoring fibrils.

[Indexed for MEDLINE]

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