Abstract
Melanocytes grow well in culture media supplemented with phorbol ester. However, phorbol ester is metabolically stable and has prolonged effects on multiple cellular responses. Different groups have reported that they could cultivate melanocytes without phorbol ester. However, in medium without phorbol esters contaminating fibroblasts are often difficult to eliminate. We have developed an improved method of eliminating fibroblasts using geneticin in serum free medium with bFGF, endothelin-1 and no phorbol ester. Treatment with a low concentration of geneticin effectively eliminated contaminating fibroblasts and was not harmful to melanocytes if geneticin was added initially in a high calcium media (2 mM) followed by a change to a low (0.09 mM) calcium media immediately after removal of the geneticin. With this technique we could easily establish pure melanocyte culture. This culture method will provide a useful tool for studies on melanocyte cellular response without the influence of phorbol ester.
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