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可注射的微凝含有基因工程细菌,用于通过编程的Chemokine表达来治疗结肠癌
Yazhou Chen1,2, Kehan Cai1, Hui Zhao3
1The First Affiliated Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, 450052, PR China.
Materials today. Bio
|December 3, 2024
概括
基因工程细菌不断产生化学激素CCL21,增强癌症免疫疗法. 在微凝中封装的细菌通过维持持续的化学激素存在,有效地抑制瘤生长.
科学领域:
- 免疫学 免疫学 免疫学
- 生物技术是生物技术.
- 癌症研究 癌症研究
背景情况:
- 化基因调节瘤微环境中的免疫细胞活动,使其成为癌症免疫治疗的关键标.
- 持续向瘤输送化学激素对于招募和激活免疫细胞来对抗癌症至关重要.
研究的目的:
- 设计一种细菌细胞工厂,用于控制,连续生产化学激素CCL21.21.
- 为了评估封装的工程细菌对持续的化学基因输送和抗瘤作用的疗效.
主要方法:
- 工程细菌使用 thioredoxin (Trx) 融合来减少包容体和各种促进体 (pT7-LacO,pBV220,pDawn) 以优化CCL21表达.
- 在凝甲基 (GelMA) 微凝中封装工程细菌,以提高活力和保留.
- 在小鼠模型中对瘤生长抑制的评估.
主要成果:
- 由工程细菌成功连续生产化学CCL21.
- 凝MA微凝保持了细菌活力和长时间的肠道保留.
- 持续的,局部的CCL21生产有效地抑制了瘤的生长.
结论:
- 在GelMA微凝中封装的基因工程细菌为癌症免疫疗法中持续的化学激素输送提供了一个有希望的策略.
- 这种方法促进了受控的化学激素的产生,增强了免疫细胞的招募和抗瘤免疫反应.
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