目的:研究表达Angiostatin基因的B16黑色素瘤的体内生长行为.方法:通过改造Plasminogen cDNA得到Angiostatin基因,构建成真核表达载体pAGAGS3后导入B16黑色素瘤细胞使其表达.结果:表达Angiostatin的B16黑色素瘤细胞体外生长速率和软琼脂中克隆形成能力均未改变.但接种小鼠26d后,体内生长抑制率达87%(P<0.01).结论:表达Angiostatin的B16黑色素瘤体内生长受到显著抑制.

Objective: Study on the growth character of B16 melanoma cell which can express angiostatin. Methods: Angiostatin gene was constructed from human plasminogen cDNA by deletion mutation. A B16 melanoma cell clone named BAG28 which stably expresses angiostatin was established by introducing gene into it. Results: BAG28 in vitro had no changes in proliferation rate and the ability of clone formation in soft agar. Study in vitro showed that the tumor weight had reduced about 87% ( P < 0. 01 ) 26 days after inoculation in mouse. Conclusion: The growth of B16 melanoma cells expressing angiostain was significandy inhibited in vivo.