将多种功能遗传编码到细胞外囊中,以便有针对性地将生物物质输送到T细胞
Devin M Stranford1,2, Lacy M Simons3,4, Katherine E Berman2,5
1Department of Chemical and Biological Engineering, Northwestern University, Evanston, IL, USA.
Nature biomedical engineering
|November 27, 2023
概括
研究人员设计了细胞以产生细胞外囊泡 (EVs),以对T细胞进行有针对性的生物输送. 这种新的方法可以在没有化学修饰的情况下进行精确的输送,从而推进细胞免疫疗法.
科学领域:
- 生物技术是生物技术.
- 细胞免疫学 细胞免疫学
- 基因治疗 基因治疗
背景情况:
- 对T细胞的基因改造对于推进细胞免疫疗法至关重要.
- 针对性地向T细胞输送生物药物仍然是该领域的一个重大挑战.
- 现有的方法通常需要进行化学修改,从而限制了效率和适用性.
研究的目的:
- 开发一种新的方法,利用工程外细胞囊泡 (EVs) 向T细胞提供有针对性的生物药物.
- 为了证明电动汽车在没有化学修改目标细胞的情况下封装和输送治疗载荷的能力.
- 为了验证这种基于EV的输送系统在初级人类T细胞中的有效性.
主要方法:
- 细胞的基因工程,以生产具有特定功能的电动汽车.
- 将活动货物装载的蛋白质标签纳入电动汽车.
- 在EV表面显示T细胞向域和融合性糖蛋白,以增强向和吸收.
- 通过工程 EV 传递 Cas9 单指导RNA 复合体到原始人类 CD4+ T 细胞中的特定基因.
主要成果:
- 工程细胞成功地分泌出能够积极加载蛋白质载荷的EV.
- 电动汽车证明了高亲和度的准和有效地传递给T细胞.
- 在初级人体CD4+T细胞中,通过使用递送的Cas9单指导RNA复合体,成功地切除了C-X-C化学基因共受体4型基因.
- 该策略在不需要对受体T细胞进行化学修饰的情况下被证明是有效的.
结论:
- 开发的方法提供了一种非化学方法,用于使用工程EV向T细胞提供有针对性的生物输送.
- 这个平台具有广泛的潜力,用于各种治疗应用,包括基因编辑和免疫治疗.
- 该策略可以适应针对T细胞以外的其他细胞类型,扩大其治疗范围.
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