眼睑皮肤恶性黑色素瘤早期检测进展(2)
由于实体瘤没有特异性的肿瘤抗原,car-t细胞难以向实体瘤迁移和实体瘤内肿瘤微环境中存在着大量的免疫抑制因子和免疫抑制细胞,因此靶向实体瘤比血液瘤更具难度和挑战性。现认为hsp具有伴移抗原肽的作用,肿瘤组织中提出的hsp-肽复合物可以作为肿瘤排斥抗原,诱导肿瘤特异性免疫,产生特异细胞毒性t细胞(ctl),特异性杀死肿瘤细胞,而且这种作用在同种间不受mhcⅠ类分子限制,这些为肿瘤疫苗的开发提供了新的思路。 鉴于ad.mda-7安全有效的治疗效果和mda.7蛋白对黑素瘤的负性调节作用及其增加肿瘤细胞对化疗敏感性的特点,本实验构建了a375黑素瘤细胞裸鼠移植瘤模型,研究ad.mda-7和dtic联合应用对黑素瘤生长的抑制情况及机制,为探索治疗黑素瘤的新方法提供实验依据。
5展望与问题
因眼睑皮肤恶黑瘤发展迅速,易广泛转移,恶性度高,治疗棘手。早期诊断,及时正确治疗非常重要,建议对于疑似恶黑瘤的眼睑病变均应早期行活组织病检,但因眼睑皮肤恶黑瘤组织结构,细胞形态变化多样,凭临床及病理特征诊断仍有一定困难,因此对其应用
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