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Topical Application of Laminin-332 to Diabetic Mouse Wounds

Overview
Journal J Dermatol Sci
Publisher Elsevier
Specialty Dermatology
Date 2007 Aug 28
PMID 17719208
Citations 8
Authors
Affiliations
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Abstract

Background: Keratinocyte migration is essential for wound healing and diabetic wound keratinocytes migrate poorly. Keratinocyte migration and anchorage appears to be mediated by laminin-332 (LM-332). Impaired diabetic wound healing may be due to defective LM-332 mediated keratinocyte migration.

Objective: To evaluate LM-332 expression in diabetic (db/db) and control (db/-) mice and to test LM-332 wound healing effects when applied to mouse wounds.

Methods: LM-332 expression in mouse wounds was evaluated using immunohistochemistry. LM-332 wound healing effects were evaluated by directly applying soluble LM-332, a LM-332 biomaterial, or a control to mouse wounds. Percent wound closure and histology score, based on healing extent, were measured.

Results: Precursor LM-332 expression was markedly reduced in db/db when compared to db/- mice. In vitro, soluble LM-332 and LM-332 biomaterial demonstrated significant keratinocyte adhesion. In vivo, soluble LM-332 treated wounds had the highest histology score, but significant differences were not found between wound treatments (p>0.05). No differences in percentage wound closure between treatment and control wounds were found (p>0.05).

Conclusion: The db/db wounds express less precursor LM-332 when compared to db/-. However, LM-332 application did not improve db/db wound healing. LM-332 purified from keratinocytes was primarily physiologically cleaved LM-332 and may not regulate keratinocyte migration. Application of precursor LM-332 rather than cleaved LM-332 may be necessary to improve wound healing, but this isoform is not currently available in quantities sufficient for testing.

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References
1.
Shang M, Koshikawa N, Schenk S, Quaranta V . The LG3 module of laminin-5 harbors a binding site for integrin alpha3beta1 that promotes cell adhesion, spreading, and migration. J Biol Chem. 2001; 276(35):33045-53. DOI: 10.1074/jbc.M100798200. View

2.
Sigle R, Gil S, Bhattacharya M, Ryan M, Yang T, Brown T . Globular domains 4/5 of the laminin alpha3 chain mediate deposition of precursor laminin 5. J Cell Sci. 2004; 117(Pt 19):4481-94. DOI: 10.1242/jcs.01310. View

3.
Gil S, Brown T, Ryan M, Carter W . Junctional epidermolysis bullosis: defects in expression of epiligrin/nicein/kalinin and integrin beta 4 that inhibit hemidesmosome formation. J Invest Dermatol. 1994; 103(5 Suppl):31S-38S. DOI: 10.1111/1523-1747.ep12398953. View

4.
Antezana M, Sullivan S, Usui M, Gibran N, Spenny M, Larsen J . Neutral endopeptidase activity is increased in the skin of subjects with diabetic ulcers. J Invest Dermatol. 2002; 119(6):1400-4. DOI: 10.1046/j.1523-1747.2002.19618.x. View

5.
Carter W, Kaur P, Gil S, Gahr P, Wayner E . Distinct functions for integrins alpha 3 beta 1 in focal adhesions and alpha 6 beta 4/bullous pemphigoid antigen in a new stable anchoring contact (SAC) of keratinocytes: relation to hemidesmosomes. J Cell Biol. 1990; 111(6 Pt 2):3141-54. PMC: 2116384. DOI: 10.1083/jcb.111.6.3141. View