分化簇24(cluster of differentiation 24,CD24)是一种黏蛋白样磷脂酰肌醇锚定的表面蛋白,在大部分恶性肿瘤中高表达,通过多种机制促进肿瘤的发生及进展,并在肿瘤微环境中发挥重要作用,在体内外试验中已展现出较好的抗肿瘤治疗前景。本...分化簇24(cluster of differentiation 24,CD24)是一种黏蛋白样磷脂酰肌醇锚定的表面蛋白,在大部分恶性肿瘤中高表达,通过多种机制促进肿瘤的发生及进展,并在肿瘤微环境中发挥重要作用,在体内外试验中已展现出较好的抗肿瘤治疗前景。本文综述了CD24在肿瘤微环境中参与恶性肿瘤的生长、增殖、侵袭转移等方面的生物学行为,阐述以CD24为靶点的单克隆抗体、抗体偶联药物、嵌合抗原受体免疫疗法、纳米颗粒介导的药物递送等相关治疗策略,以期为CD24作为靶点的治疗提供参考。展开更多
背景:纳米技术与医学的结合在选择性靶向及治疗肿瘤领域开辟了一条全新的道路,通过应用纳米载体确保了装载药物的靶向递送与稳定性,增强了细胞摄取和生物相容性。目的:制备一种谷胱甘肽和pH值双响应性CD24适配体修饰的载铁死亡激动剂Era...背景:纳米技术与医学的结合在选择性靶向及治疗肿瘤领域开辟了一条全新的道路,通过应用纳米载体确保了装载药物的靶向递送与稳定性,增强了细胞摄取和生物相容性。目的:制备一种谷胱甘肽和pH值双响应性CD24适配体修饰的载铁死亡激动剂Erastin和双质粒的纳米药物递送系统PC(coBP)Ca,探讨其在体外对三阴性乳腺癌中CD24高表达细胞的精准靶向性和可行性。方法:PEG-CAPDB经过多次聚合反应生成纳米微球骨架COOH-PEG-CPADB-[co BMA co PDSMA],再通过自组装合成内载铁死亡激动剂Erastin、1-2M2ge化合物、NF2敲除质粒和YAP过表达质粒形成PC(coBP),利用SELEX技术筛选CD24适配体,进一步修饰PC(coBP),最终形成载药纳米微球PC(coBP)Ca。检测PC(coBP)Ca表面CD24适配体修饰、对谷胱甘肽和pH值的敏感性、逃逸免疫细胞吞噬的性能及靶向性能、逃逸溶酶体吞噬和药物突释性能及对吞噬细胞吞噬作用的影响。结果与结论:PC(coBP)Ca的平均粒径为(141.11±13.43)nm,平均多分散性指数为0.353±0.074,平均Zeta电位显示良好分散性;PC(coBP)Ca中铁死亡激动剂Erastin的平均载药量为(23.34±2.45)%、包封率为(90.24±3.11)%;PC(coBP)Ca在谷胱甘肽和pH值双重响应作用下的4 h释放量约为90%,可有效逃避免疫细胞吞噬精准靶向CD24高表达三阴乳腺癌细胞,逃逸溶酶体,达到药物突释,激活铁死亡途径和促进吞噬细胞吞噬。实验成功合成载药纳米微球PC(coBP)Ca具备精准、有效、安全和低毒性的特点,有望成为三阴乳腺癌中CD24高表达细胞靶向纳米药物递送系统。展开更多
Objective:To investigate the relationship of CD24 and CD2β molecule expression in cervical cancer tissues with cancer cell growth and their potential therapeutic value.Methods: A total of 40 patients with cervical ca...Objective:To investigate the relationship of CD24 and CD2β molecule expression in cervical cancer tissues with cancer cell growth and their potential therapeutic value.Methods: A total of 40 patients with cervical cancer underwent radical surgery, and the cervical cancer tissue samples and tissue samples adjacent to carcinoma were collected. The differences in CD24 and CD2β molecule expression in adjacent tissues and cervical cancer tissues were compared, and the correlation of CD24 and CD2β molecule expression in cervical cancer tissues with proliferation and apoptosis gene expression was further determined.Results: CD24 expression in cervical cancer tissues was higher than that in adjacent tissues whereas CD2β expression was lower than that in adjacent tissues. Proliferation genes GBP1 and eIF4E3 mRNA expression in high CD24 expression group were lower than those in low CD24 expression group whereas SCD-1, TLR4 and HERC4 mRNA expression were higher than those in low CD24 expression group;apoptosis genes OPCML, DAPK and TSLC1 mRNA expression were lower than those in low CD24 expression group whereas GRIM-19 mRNA was higher than that in low CD24 expression group. Proliferation genes GBP1 and eIF4E3 mRNA expression in high CD2β expression group were higher than those in low CD2β expression group whereas SCD-1, TLR4 and HERC4 mRNA expression were lower than those in low CD2β expression group;apoptosis genes OPCML, DAPK and TSLC1 mRNA expression were higher than those in low CD2β expression group whereas GRIM-19 mRNA was lower than that in low CD2β expression group.Conclusion: CD24 molecule expression abnormally increases whereas CD2β molecule expression abnormally decreases in cervical cancer tissues, and the specific expression levels can be used to evaluate cervical cancer cell proliferation and apoptosis, indirectly reflect the tumor condition and are expected to become the reference for long-term therapy development.展开更多
文摘分化簇24(cluster of differentiation 24,CD24)是一种黏蛋白样磷脂酰肌醇锚定的表面蛋白,在大部分恶性肿瘤中高表达,通过多种机制促进肿瘤的发生及进展,并在肿瘤微环境中发挥重要作用,在体内外试验中已展现出较好的抗肿瘤治疗前景。本文综述了CD24在肿瘤微环境中参与恶性肿瘤的生长、增殖、侵袭转移等方面的生物学行为,阐述以CD24为靶点的单克隆抗体、抗体偶联药物、嵌合抗原受体免疫疗法、纳米颗粒介导的药物递送等相关治疗策略,以期为CD24作为靶点的治疗提供参考。
文摘背景:纳米技术与医学的结合在选择性靶向及治疗肿瘤领域开辟了一条全新的道路,通过应用纳米载体确保了装载药物的靶向递送与稳定性,增强了细胞摄取和生物相容性。目的:制备一种谷胱甘肽和pH值双响应性CD24适配体修饰的载铁死亡激动剂Erastin和双质粒的纳米药物递送系统PC(coBP)Ca,探讨其在体外对三阴性乳腺癌中CD24高表达细胞的精准靶向性和可行性。方法:PEG-CAPDB经过多次聚合反应生成纳米微球骨架COOH-PEG-CPADB-[co BMA co PDSMA],再通过自组装合成内载铁死亡激动剂Erastin、1-2M2ge化合物、NF2敲除质粒和YAP过表达质粒形成PC(coBP),利用SELEX技术筛选CD24适配体,进一步修饰PC(coBP),最终形成载药纳米微球PC(coBP)Ca。检测PC(coBP)Ca表面CD24适配体修饰、对谷胱甘肽和pH值的敏感性、逃逸免疫细胞吞噬的性能及靶向性能、逃逸溶酶体吞噬和药物突释性能及对吞噬细胞吞噬作用的影响。结果与结论:PC(coBP)Ca的平均粒径为(141.11±13.43)nm,平均多分散性指数为0.353±0.074,平均Zeta电位显示良好分散性;PC(coBP)Ca中铁死亡激动剂Erastin的平均载药量为(23.34±2.45)%、包封率为(90.24±3.11)%;PC(coBP)Ca在谷胱甘肽和pH值双重响应作用下的4 h释放量约为90%,可有效逃避免疫细胞吞噬精准靶向CD24高表达三阴乳腺癌细胞,逃逸溶酶体,达到药物突释,激活铁死亡途径和促进吞噬细胞吞噬。实验成功合成载药纳米微球PC(coBP)Ca具备精准、有效、安全和低毒性的特点,有望成为三阴乳腺癌中CD24高表达细胞靶向纳米药物递送系统。
文摘Objective:To investigate the relationship of CD24 and CD2β molecule expression in cervical cancer tissues with cancer cell growth and their potential therapeutic value.Methods: A total of 40 patients with cervical cancer underwent radical surgery, and the cervical cancer tissue samples and tissue samples adjacent to carcinoma were collected. The differences in CD24 and CD2β molecule expression in adjacent tissues and cervical cancer tissues were compared, and the correlation of CD24 and CD2β molecule expression in cervical cancer tissues with proliferation and apoptosis gene expression was further determined.Results: CD24 expression in cervical cancer tissues was higher than that in adjacent tissues whereas CD2β expression was lower than that in adjacent tissues. Proliferation genes GBP1 and eIF4E3 mRNA expression in high CD24 expression group were lower than those in low CD24 expression group whereas SCD-1, TLR4 and HERC4 mRNA expression were higher than those in low CD24 expression group;apoptosis genes OPCML, DAPK and TSLC1 mRNA expression were lower than those in low CD24 expression group whereas GRIM-19 mRNA was higher than that in low CD24 expression group. Proliferation genes GBP1 and eIF4E3 mRNA expression in high CD2β expression group were higher than those in low CD2β expression group whereas SCD-1, TLR4 and HERC4 mRNA expression were lower than those in low CD2β expression group;apoptosis genes OPCML, DAPK and TSLC1 mRNA expression were higher than those in low CD2β expression group whereas GRIM-19 mRNA was lower than that in low CD2β expression group.Conclusion: CD24 molecule expression abnormally increases whereas CD2β molecule expression abnormally decreases in cervical cancer tissues, and the specific expression levels can be used to evaluate cervical cancer cell proliferation and apoptosis, indirectly reflect the tumor condition and are expected to become the reference for long-term therapy development.