新型ALCAM向抗体片段的优化和特征化,用于跨皮传递
Aline Bauer1, Sven Klassa1, Anja Herbst1
1Institute of Pharmaceutical Sciences, ETH Zurich, 1-5/10 Vladimir-Prelog-Weg, 8093 Zurich, Switzerland.
Pharmaceutics
|July 29, 2023
概括
研究人员开发了改进的抗ALCAM抗体碎片用于局部应用,通过减少白细胞透,显示出治疗喘和角膜排斥等免疫疾病的潜力.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 药物开发 药物开发
背景情况:
- 活性白细胞细胞粘附分子 (ALCAM) 涉及到免疫媒介疾病,如喘和角膜移植排斥.
- 目前针对ALCAM的单克隆抗体 (mAbs) 面临着由于广泛的ALCAM表达而面临的挑战,在系统应用时面临副作用的风险.
- 对表面暴露的组织局部应用ALCAM向剂提供了减轻这些风险的潜在策略.
研究的目的:
- 开发新的抗ALCAM抗体碎片,提高其稳定性和亲和力,用于潜在的局部治疗用途.
- 评估这些碎片在阻断ALCAM相互作用方面的有效性及其在相关组织中的透能力.
- 在喘的临床前模型中评估抗ALCAM片段的鼻内输送的治疗潜力.
主要方法:
- 开发和描述各种格式 (单价,双价) 的反ALCAM mAb片段.
- 使用ELISA和白细胞转移试验评估ALCAM-CD6和ALCAM-ALCAM相互作用抑制.
- 评价角膜上皮透和有效性在喘的小鼠模型在鼻内给药后.
主要成果:
- 开发了稳定性和亲和力改进的抗ALCAM碎片,具有跨物种反应性.
- 双对应片段在体外有效抑制了ALCAM-ALCAM相互作用,与大小相关的角膜上皮透.
- 在小鼠喘模型中,通过鼻腔输送碎片减少了白细胞透,验证了ALCAM作为局部肺点.
结论:
- 新型抗ALCAM抗体碎片有效地阻断关键的ALCAM相互作用,并显示出局部输送的前景.
- 局部应用,特别是通过肺部疾病的鼻内输送,提供了针对ALCAM的可行策略,同时最大限度地减少全身副作用.
- 这些发现支持开发针对ALCAM的抗体片段,用于影响表面暴露组织的免疫介导疾病.
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