The invention discloses application of
Bombyx mori
neuropeptide BommoOKAtype4 in preparation of a
medicine for inhibiting
melanoma cell growth, and belongs to the technical field of
medical biology. Aiming at the technical problems that
melanoma is high in
malignancy degree, easy to transfer and limited in treatment means, and whether the
bombyx mori
neuropeptide BommoOKAtype4 can directly inhibit the growth of
melanoma cells is not clear yet when the
bombyx mori
neuropeptide BommoOKAtype4 is mainly used for
skin whitening before, the invention provides the application of the
bombyx mori neuropeptide in preparing the
medicine for inhibiting the melanoma cells. According to the silkworm neuropeptide,
gene expression and
protein functions of
melanin synthesis key enzymes TYR, TRP1 and TRP2 are comprehensively inhibited by down-regulating expression of a core
transcription factor MITF, so that melanoma
cell proliferation is directly inhibited while
melanin synthesis is inhibited, and therefore, the silkworm neuropeptide can be used for preparing drugs for treating melanoma and has a wide application prospect. A novel
peptide candidate substance is provided for treatment of melanoma.