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. 1994 Sep 27;91(20):9307–9311. doi: 10.1073/pnas.91.20.9307

Genetically modified keratinocytes transplanted to wounds reconstitute the epidermis.

P M Vogt 1, S Thompson 1, C Andree 1, P Liu 1, K Breuing 1, D Hatzis 1, H Brown 1, R C Mulligan 1, E Eriksson 1
PMCID: PMC44801  PMID: 7937761

Abstract

Normal and retrovirally transfected keratinocyte suspensions expressing either the beta-galactosidase gene or the human growth hormone (hGH) gene were transplanted into chamber-enclosed skin full-thickness wounds of Yorkshire pigs. Immunostaining of sequential skin biopsies obtained for 4 weeks after transplantation showed survival of the transplanted keratinocytes as well as expression of beta-galactosidase. Transfected keratinocytes were first seen in the neodermal portions of the wounds, then in the regenerating basal epidermal layer, and finally in the terminally differentiating cells of the stratum spinosum. When keratinocytes transfected with the hGH gene were transplanted into similar wounds, hGH was detected for 10 days in wound fluid. In contrast, hGH was detected in vitro for 47 days. Wounds transplanted with either transfected or normal keratinocytes restored the epithelial barrier function significantly faster than nontransplanted controls (P < 0.05). The study confirms the successful transplantation of keratinocyte suspensions, their reconstitution of the epidermis, and their acceleration of repair. Further, this apparently normal incorporation of genetically engineered transplanted keratinocytes expressing either beta-galactosidase or hGH suggests the possibility of introducing other genes expressing therapeutic proteins into wounds to favorably affect healing. Wound fluid detection of the expressed peptide provided early demonstration of successful transfer of the hGH gene.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.

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