Example 2
Melanocytes (B16F10 cell line) were incubated on 6-well culture plates in an incubator for 24 hours, and were treated with the peptide of the present invention with different concentrations. After the cells were incubated for from 6 to 24 hours, the cells were dissolved, and then the CREB phosphorylation and MITF expression, which are signaling molecules involved in melanogenesis, were observed by western blot assay using antibodies specific thereto. The test was carried out using anti-pCREB antibody (Santa Cruz Biotechnology, USA) and anti-MITF antibody (Santa Cruz Biotechnology, USA).
When mouse melanocytes B16F10 were treated with the peptide having the amino acid sequence of SEQ ID NO: 1 or SEQ ID NO: 2, and then the changes in expressions of the melanin signaling molecules were observed over time, the phosphorylation levels of MITF, which is a transcription factor to increase the expression of a melanogenic enzyme, and CREB, which increases the expression of MITF, were increased (