Melanocyte spheroids are formed by repetitive long-term trypsinization
Di Li1, Ru-Zhi Zhang1, Hai-Xia Shi1
1Department of Dermatology, The Third Affiliated Hospital of Soochow University, Changzhou, China.
Background:
Autologous melanocyte transplantation plays an important role in the treatment of vitiligo.
Objective:
Previous studies have indicated that, compared with melanocytes growing in monolayers, melanocyte spheroids have a better survival in growth factor- and serum-deprived conditions.
Methods:
Melanocyte spheroids were obtained from human epidermis by repetitive long-term trypsinization and maintained an aggregated morphology for a short period in certain conditions.
Results:
Melanocyte spheroids were capable of growing into normal dendritic melanocytes in monolayer when they were harvested and reinoculated in 24-well plates. Immunohistochemical analysis of the melanocyte spheroids revealed that they were positive for HMB45, a melanosome-specific marker. No melanomas occurred when melanocyte spheroids were transplanted into mice.
Conclusion:
Our study provides a promising approach for melanocyte transplantation to treat vitiligo.
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