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基因工程生物复合物介导的双模态成像导向协同化学FUAS用于瘤治疗
Yijun Zhou1, Mingyang Zhang1, Haiyan Yang1,2
1State Key Laboratory of Ultrasound in Medicine and Engineering, College of Biomedical Engineering, Chongqing Medical University, Chongqing, 400016, China.
Materials today. Bio
|June 30, 2025
概括
这项研究引入了一种用于增强癌症治疗的新型生物复合物,将基因工程细菌与聚焦超声波切除手术 (FUAS) 和化疗结合起来. 这种方法在临床前模型中改善了瘤抑制和生存率.
科学领域:
- 生物医学工程 生物医学工程
- 在瘤学瘤学.
- 纳米技术纳米技术
背景情况:
- 聚焦超声波除手术 (FUAS) 与细菌疗法相结合,对固体瘤有很大的前景,但面临着效率低下和单一成像模式等局限性.
- 瘤复发和低于最佳的抗瘤效果阻碍了当前组合疗法的临床转化.
研究的目的:
- 开发一种多功能生物复合材料,用于图像引导的协同化疗-FUAS治疗.
- 用聚多巴胺 (pDA) 和多克索鲁比 (DOX) 改造细菌 (GVs-E. coli) 来增强瘤治疗.
主要方法:
- 基因工程大肠杆菌 (GVs-E. coli) 被涂上pDA和DOX,形成一个生物复合材料.
- 超声波成像 (USI) 和光声成像 (PAI) 用作指导.
- 使用FUAS触发DOX释放并通过细菌气囊腔化增强治疗.
主要成果:
- 这种生物复合材料优先殖民低氧瘤组织.
- 来自GVs-E. coli的气囊 (GVs) 通过化与FUAS协同,使USI.
- pDA涂层提供了PAI信号,FUAS触发了DOX释放,导致显著的瘤抑制和延长4T1乳腺癌模型中的存活时间.
结论:
- 开发的生物复合材料为图像引导的多层次协同癌症治疗提供了一种新的策略.
- 这种方法解决了传统FUAS的局限性,并且在与化疗结合时改善了治疗结果.
- 该战略为协作抗癌治疗提供了一个新的范式.
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