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...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 suppressed tumor angiogenesis and proliferation. The combination therapy of RDD-Ab + CTLA-4 antibody has the slowest tumor growth rate, and the combination therapy increases the infiltration of CD4+ and CD8+ lymphocytes robustly in solid tumors. Conclusion: RDD-Ab can inhibit the angiogenesis function of endothelial cells in vitro and has a highly effective inhibitory effect on melanoma growth has an efficient inhibitory effect on melanoma growth, and the combined treatment with CTLA-4 antibody is more effective. This provides a new potential treatment option for clinical intervention of melanoma in the future.展开更多
目的探讨免疫检查点抑制剂(Immune checkpoint inhibitors,ICIs)在肾移植后恶性肿瘤患者中的安全性和有效性,为上述患者使用ICIs提供参考。方法检索中国知网、维普、万方、PubMed以及Web of Science数据库,收集至2022年12月关于ICIs在...目的探讨免疫检查点抑制剂(Immune checkpoint inhibitors,ICIs)在肾移植后恶性肿瘤患者中的安全性和有效性,为上述患者使用ICIs提供参考。方法检索中国知网、维普、万方、PubMed以及Web of Science数据库,收集至2022年12月关于ICIs在肾移植后恶性肿瘤患者中应用的文献,提取数据并整理分析。结果纳入分析的患者,平均年龄为64.58岁,其中男21例,女10例;恶性肿瘤的诊断时间与最后一次肾移植时间的平均跨度为9.67年;免疫抑制剂有完整使用记录的患者中约一半在使用ICIs后对药物进行了调整,多数为减少免疫抑制剂的种类;患者肿瘤诊断主要为黑色素瘤,次之为皮肤鳞状细胞癌;使用ICIs类型包括程序性死亡受体-1(programmed cell death protein 1,PD-1)抑制剂,程序性死亡配体-1(programmed cell death-1 ligand-1,PD-L1)抑制剂和细胞毒性T淋巴细胞相关抗原-4(cytotoxic T lymphocyte-associated antigen-4,CTLA-4)抑制剂,ICIs在肾移植后恶性肿瘤患者中的疾病控制率为55.17%;发生排斥的10例患者,经处理后,最终5例丢失移植物。结论ICIs可能给部分肾移植后恶性肿瘤患者带来临床获益,但也可能诱发患者发生排斥反应,因此,肾移植后恶性肿瘤患者使用ICIs需充分考虑获益风险比。展开更多
文摘目的: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 suppressed tumor angiogenesis and proliferation. The combination therapy of RDD-Ab + CTLA-4 antibody has the slowest tumor growth rate, and the combination therapy increases the infiltration of CD4+ and CD8+ lymphocytes robustly in solid tumors. Conclusion: RDD-Ab can inhibit the angiogenesis function of endothelial cells in vitro and has a highly effective inhibitory effect on melanoma growth has an efficient inhibitory effect on melanoma growth, and the combined treatment with CTLA-4 antibody is more effective. This provides a new potential treatment option for clinical intervention of melanoma in the future.
文摘目的探讨免疫检查点抑制剂(Immune checkpoint inhibitors,ICIs)在肾移植后恶性肿瘤患者中的安全性和有效性,为上述患者使用ICIs提供参考。方法检索中国知网、维普、万方、PubMed以及Web of Science数据库,收集至2022年12月关于ICIs在肾移植后恶性肿瘤患者中应用的文献,提取数据并整理分析。结果纳入分析的患者,平均年龄为64.58岁,其中男21例,女10例;恶性肿瘤的诊断时间与最后一次肾移植时间的平均跨度为9.67年;免疫抑制剂有完整使用记录的患者中约一半在使用ICIs后对药物进行了调整,多数为减少免疫抑制剂的种类;患者肿瘤诊断主要为黑色素瘤,次之为皮肤鳞状细胞癌;使用ICIs类型包括程序性死亡受体-1(programmed cell death protein 1,PD-1)抑制剂,程序性死亡配体-1(programmed cell death-1 ligand-1,PD-L1)抑制剂和细胞毒性T淋巴细胞相关抗原-4(cytotoxic T lymphocyte-associated antigen-4,CTLA-4)抑制剂,ICIs在肾移植后恶性肿瘤患者中的疾病控制率为55.17%;发生排斥的10例患者,经处理后,最终5例丢失移植物。结论ICIs可能给部分肾移植后恶性肿瘤患者带来临床获益,但也可能诱发患者发生排斥反应,因此,肾移植后恶性肿瘤患者使用ICIs需充分考虑获益风险比。