Collagen XII regulates stromal wound closure. (May 2023)

• Record Type: Journal Article
• Authors: Donovan, Christopher; Cogswell, Devon; Sun, Mei; Adams, Sheila; Avila, Marcel Y.; Margo, Curtis E.; Koch, Manuel; Espana, Edgar M.
• Is Part Of: Experimental eye research. Volume 230(2023)
• Publication Date: 2023-05
• Subjects: Regeneration -- Stroma -- Fibroblasts -- Wound -- Collagen XII; Ophthalmology -- Periodicals; Eye -- Periodicals; Œil -- Périodiques; Ophthalmology; Periodicals; Electronic journals; 612.8405
• DOI: 10.1016/j.exer.2023.109456
• Languages: English
• ISSNs: 0014-4835

Abstract

Abstract: The role of collagen XII in regulating injury repair and reestablishment of corneal function is unknown. This manuscript aims to investigate the role(s) of collagen XII in the repair of incisional and debridement injuries in an adult mouse model. Two different types of injury in wild type and Col12a1 −/− corneas were created to investigate the effects of collagen XII -in wound repair and scar formation-by using clinical photographs, immunohistology, second harmonic generation imaging and electron microscopy. Results showed that collagen XII is a regulator of wound closure after incisional injuries. Absence of collagen XII retarded wound closure and the wound healing process. These findings show that collagen XII regulates fibrillogenesis, CD68 cell lineage infiltration, and myofibroblast survival following injury. In vitro studies suggest that collagen XII regulates deposition of an early and provisional matrix by interacting with two proteins regulating early matrix deposition: fibronectin and LTBP1(latent transforming growth factor β binding protein 1). In conclusion, collagen XII regulates tissue repair in corneal incisional wounds. Understanding the function of collagen XII during wound healing has significant translational value. Highlights: Collagen XII is essential to attain wound closure and scar maturation. Incisional injuries heal poorly and closure is delayed without collagen XII. Collagen XII is deposited early during wound closure. Collagen XII interacts with other matrix components of the provisional matrix