ABSTRACT
Objective To discuss the development and the invasive transfer mechanism.Methods Cell culture method, p53 protenin immunohistochemistry, PCR-SSCP examination, zymography, PCM and heterogenic inouclation test inside the nude mice were adopted. Results p53 genetic mutation existed in human melanoma cells. The fluorescent positive rate of 67KD LN-R on the surface of the melanoma cell and the average flurescent intensity are repectively WM451＞WM983A＞WM1341B＞WM35.Early WM35 did not produce MMPs; WM1341B only produced 72KDa(MMP-2),not 92KDa(MMP-9);Both WM983A at progressive stage and distal transfering tumor WM45 produced 72KDa and 92KDa. WM983A and WM451 were also seen to form evident transfering tumor inside the naked mice.Conclusion p53 genetic mutation, the production of MMPs and the high indication of 67KD LN-R on the celluar surface are the key factors for the human melanoma cell to obtain invasive transferring abililty.