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Boyce ST, Lloyd CM, Kleiner MC, Swope VB, Abdel-Malek Z, Supp DM. Restoration of cutaneous pigmentation by transplantation to mice of isogeneic human melanocytes in dermal-epidermal engineered skin substitutes. Pigment Cell Melanoma Res 2017. [PMID: 28640957 DOI: 10.1111/pcmr.12609] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Autologous engineered skin substitutes (ESS) containing melanocytes (hM) may restore pigmentation and photoprotection after grafting to full-thickness skin wounds. In this study, normal hM were isolated from discard skin, propagated with or without tyrosinase inhibitors, cryopreserved, recovered into culture, and added to ESS (ESS-P) before transplantation. ESS-P were incubated in either UCMC160/161 or UCDM1 medium, scored for hM densities, and grafted to mice. The results showed that sufficient hM can be propagated to expand donor tissue by 100-fold; incubation of hM in tyrosinase inhibitors reduced pigment levels but did not change hM recovery after cryopreservation; hM densities in ESS-P were greater after incubation in UCDM1 than UCMC160 medium; hM were localized to the dermal-epidermal junction of ESS-P; and UCDM1 medium promoted earlier pigment distribution and density. These results indicate that hM can be incorporated into ESS-P efficiently to restore cutaneous pigmentation and UV photoprotection after full-thickness skin loss conditions.
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Affiliation(s)
- Steven T Boyce
- Department of Surgery, University of Cincinnati, Cincinnati, OH, USA.,Research Department, Shriners Hospitals for Children, Cincinnati, OH, USA
| | - Christopher M Lloyd
- Department of Surgery, University of Cincinnati, Cincinnati, OH, USA.,Research Department, Shriners Hospitals for Children, Cincinnati, OH, USA
| | - Mark C Kleiner
- Department of Surgery, University of Cincinnati, Cincinnati, OH, USA.,Research Department, Shriners Hospitals for Children, Cincinnati, OH, USA
| | - Viki B Swope
- Department of Dermatology, University of Cincinnati, Cincinnati, OH, USA
| | - Zalfa Abdel-Malek
- Department of Dermatology, University of Cincinnati, Cincinnati, OH, USA
| | - Dorothy M Supp
- Department of Surgery, University of Cincinnati, Cincinnati, OH, USA.,Research Department, Shriners Hospitals for Children, Cincinnati, OH, USA
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Seo KI, Huh CH, Han JH, Youn JI, Lee CH, Lee WJ, Eun HC. Characterization of cryopreserved human Langerhans cells. Cryobiology 2002; 45:118-26. [PMID: 12482377 DOI: 10.1016/s0011-2240(02)00117-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Epidermal Langerhans cells are potent antigen-presenting cells in the epidermis. The establishment of a cryopreservation method for human Langerhans cells would greatly contribute to our ability to successfully conduct various experiments dealing with Langerhans cells. Since Langerhans cells are known to be sensitive to cold injury, there have been no reports concerning the cryopreservation of Langerhans cells. We have investigated the effect of cryopreservation on the function and phenotype of human Langerhans cells. Langerhans cells from human foreskins were isolated with the immunomagnetic microbead method using monoclonal antibodies for CD1a. Langerhans cells were cryopreserved in the presence of dimethylsulfoxide (DMSO) 10% and fetal calf serum 90%. Cryopreserved Langerhans cells were phenotypically assessed by flowcytometry using monoclonal antibodies to HLA-DR and CD1a. The ultrastructures of the Langerhans cells were compared using electron microscopy. An autologous T cell stimulation test was performed to compare the functions of cryopreserved Langerhans cells and fresh Langerhans cells. The viability of the cryopreserved Langerhans cells was able to be maintained at more than 90%. Cryopreserved Langerhans cells expressed high levels of HLA-DR and CD1a antigens and stimulated autologous T cells to an extent almost identical to that obtained from fresh Langerhans cells. These findings indicate that the cryopreservation of human Langerhans cells could lead to a breakthrough in various experiments dealing with human Langerhans cells.
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Affiliation(s)
- Koo Il Seo
- Department of Dermatology, Seoul National University College of Medicine, 28, Yungon-Dong, Chongno-Gu, Seoul 110-744, Republic of Korea
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Affiliation(s)
- K S Black
- CryoLife, Inc., Kennesaw, GA 30144, USA
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