电子选择素准黄金纳米来抑制乳腺癌细胞与肺内皮细胞的结合
Z Fereshteh1, M N Dang1, C Wenck1
1Department of Biomedical Engineering, University of Delaware, Newark, Delaware 19713, United States.
概括
研究人员开发了抗体功能化的黄金纳米来阻断E-选择素,显著减少癌细胞对血管壁的粘附. 这种方法显示出抑制癌症转移的潜力,通过防止循环中的瘤细胞与内皮细胞结合.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术纳米技术
- 癌症生物学 癌症生物学
背景情况:
- 癌症转移包括循环瘤细胞 (CTC) 从血管系统扩散.
- CTC 粘附在内皮细胞 (EC) 上的内皮细胞粘附分子 (CAM) 上,以阻止流动.
- 电子选择素是关键的CAM,与CTC结合有关.
研究的目的:
- 调查抗体功能化黄金纳米在阻断E-selectin中的有效性.
- 抑制癌细胞与人类肺部微血管内皮细胞 (HMVEC-Ls) 的结合.
- 了解合成参数如何影响抗体功能化纳米的特性和功能.
主要方法:
- 使用定向和非定向结合技术合成抗体功能化的金纳米.
- 多种合成参数,包括链接器长度,被动化剂和抗体比.
- 在非炎症和TNF-α炎症条件下,量化纳米结合HMVEC-Ls.
- 评估了MDA-MB-231 (三阴性乳腺癌) 细胞与HMVEC-Ls结合的抑制.
主要成果:
- 与定向结合相比,非定向结合在纳米上产生更高的抗体负荷.
- 这两种结合方法都导致了类似的纳米结合HMVEC-Ls在同等的抗体度.
- 针对E-selectin的纳米在体外将MDA-MB-231细胞与HMVEC-Ls的结合降低了高达41%.
- 通过水力动力直径,泽塔潜力和抗体加载密度来表征纳米.
结论:
- 抗体功能化的黄金纳米可以合成具有可调节的特性.
- 这些纳米有效地通过向E-selectin.in来抑制CTC与内皮细胞的结合.
- 这一策略为阻止癌症转移提供了潜在的治疗方法.
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