[PDF][PDF] Wound re-epithelialization: modulating keratinocyte migration in wound healing

SK Raja, MS Garcia, RR Isseroff - Front Biosci, 2007 - academia.edu
SK Raja, MS Garcia, RR Isseroff
Front Biosci, 2007academia.edu
An essential feature of a healed wound is the restoration of an intact epidermal barrier
through wound epithelialization, also known as re-epithelialization. The directed migration of
keratinocytes is critical to wound epithelialization and defects in this function are associated
with the clinical phenotype of chronic non-healing wounds. A complex balance of signaling
factors and surface proteins are expressed and regulated in a temporospatial manner that
promote keratinocyte motility and survival to activate wound re-epithelialization. The majority …
Abstract
An essential feature of a healed wound is the restoration of an intact epidermal barrier through wound epithelialization, also known as re-epithelialization. The directed migration of keratinocytes is critical to wound epithelialization and defects in this function are associated with the clinical phenotype of chronic non-healing wounds. A complex balance of signaling factors and surface proteins are expressed and regulated in a temporospatial manner that promote keratinocyte motility and survival to activate wound re-epithelialization. The majority of this review focuses on the mechanisms that regulate keratinocyte migration in the re-epithelialization process. This includes a review of cell attachments via desmosomes, hemidesmosomes, and integrins, the expression of keratins, the role of growth factors, cytokines and chemokines, eicosanoids, oxygen tension, antimicrobial peptides, and matrix metalloproteinases. Also reviewed are recently emerging novel mediators of keratinocyte motility including the role of electric fields, and signaling via the acetylcholine and beta-adrenergic receptors. These multiple regulators impact the ability of keratinocytes to migrate from the wound edge or other epidermal reservoirs to efficiently re-epithelialize a breach in the integrity of the epidermis. New discoveries will continue to uncover the elegant network of events that result in restoration of epidermal integrity and complete the wound repair process.
academia.edu