目的:探究抗AGGF1中和抗体(RDD-Ab),RDD-Ab + 抗CTLA-4抗体联合治疗对小鼠黑色素瘤的治疗作用。方法:合成AGGF1的GTFQRDDAPASVHSE肽并制备多克隆中和抗体(RDD-Ab)。为了评估RDD-Ab对血管生成活性和黑色素瘤生长的影响,我们实施了小管生成实验、迁移实验、细胞增殖实验、黑色素瘤细胞皮下移植性模型实验和免疫组化等实验。结果:实验结果显示,制备的RDD-Ab可以识别细胞中天然的AGGF1蛋白和过表达的AGGF1蛋白。RDD-Ab可显著抑制血管内皮细胞小管形成、迁移和增殖。与IgG对照组相比,RDD-Ab治疗显著减缓黑色素瘤生长,RDD-Ab + CTLA-4抗体联合治疗时肿瘤生长速度最慢。免疫组化实验也表明,RDD-Ab显著减少瘤内微血管生成与肿瘤细胞增殖,同时,联合治疗可显著增加瘤内CD4+和CD8+淋巴细胞的浸润。结论:RDD-Ab可在体外抑制血管内皮细胞的血管新生功能,具有高效的黑色素瘤生长抑制作用,RDD-Ab + CTLA-4联合治疗黑色素瘤效果更佳(显著增加瘤内CD4+和CD8+淋巴细胞的浸润),这为未来黑色素瘤的临床干预提供了一种新的潜在治疗方案。Objective: To investigate the therapeutic effect of neutralizing antibody (against AGGF1, RDD-Ab), RDD-Ab + CTLA-4 therapy on mouse melanoma. Methods: Synthesize GTFQRDAPASVHSE peptide of AGGF1 and prepare polyclonal neutralizing antibody (RDD-Ab). In order to evaluate the effects of RDD-Ab on angiogenesis and melanoma growth, we conducted tube formation, migration, cell proliferation, subcutaneous melanoma cell transplantation model and immunohistochemistry (IHC). Results: RDD-Ab can recognize both natural AGGF1 protein and overexpressed AGGF1 protein in cells. The experimental results showed that RDD-Ab significantly inhibits the formation, migration, and proliferation of endothelial cell tubules. Compared with the IgG control group, RDD-Ab significantly slowed down the growth of melanoma. IHC experiments showed that RDD-Ab significantly suppress
