合成粘液生物材料使局部治疗性抗体在炎症性肠病中提供
Taj Yeruva1, Sydney Yang1, Michele Kaluzienski1
1Fischell Department of Bioengineering, University of Maryland, College Park, Maryland 20742, USA.
这项研究引入了一种基于粘素的新型水凝,用于针对性地在炎症性肠病 (IBD) 中提供抗TNF-α抗体. 水凝增强了抗体的吸收,减少了全身暴露,为IBD提供了一个有前途的局部治疗方法.
科学领域:
- 生物材料科学 生物材料科学
- 胃肠病学 胃肠病学
- 免疫学 免疫学 免疫学
背景情况:
- 炎症性肠病 (IBD) 需要长期治疗慢性胃肠道炎症.
- 目前针对IBD的抗TNF-α单克隆抗体 (mAb) 疗法面临诸多挑战,包括系统性免疫抑制,向不佳和高成本.
- 需要本地化药物输送系统来提高治疗疗效和减少IBD治疗中的副作用.
研究的目的:
- 开发和评估一种基于粘素的合成水凝,用于在IBD中局部传递向TNF-α的mAbs.
- 评估基于粘素的水凝系统的生物相容性,抗体释放动力学和治疗疗效.
- 研究该平台在IBD中针对性免疫抑制的潜力,最大限度地减少全身暴露.
主要方法:
- 基于粘素的合成水凝是通过将猪粘素与4臂PEG-thiol交叉连接而创建的.
- 水凝中含有抗TNF-α mAbs,并对细胞相容性,抗体释放谱 (体外) 和生物活性进行了评估.
- 在小鼠大肠炎 (三二硫酸诱导) 模型中评估了治疗疗效和生物分布,比较了凝加载的mAbs与用溶液给药的mAbs.
主要成果:
- 基于粘素的水凝显示出出色的细胞兼容性.
- 抗体释放依赖于扩散,在模拟的胃肠蛋白解条件下增强释放.
- 单独的水凝调节了巨细胞激活,mAb载荷的水凝保持了生物活性,减少了促炎性细胞因子的产生.
- 在体内研究显示,与溶液相比,通过水凝阴道输送时,结肠中抗体的吸收和保留增加,这可能是由于粘膜粘附增强和清除减少.
结论:
- 基于真的水凝代表了一个可行的平台,用于局部提供生物药物,如抗TNF-α mAbs,用于IBD治疗.
- 这种方法有助于在炎症部位进行有针对性的免疫抑制,从而有可能提高疗效并减少全身副作用.
- 开发的水凝系统显示了通过优化抗体的输送和保留来增强炎症性肠道疾病的治疗结果的希望.
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