双参数顺序超声波照射带有充满氧气的微气泡诱导血管正常化,以加强乳腺癌的声动疗法
Zenan Zhang1,2,3,4,5, Zichao Liu1,2,3,4,5, Lingling Lei1,2,3
1Key Laboratory of Medical Imaging Precision Theranostics and Radiation Protection, College of Hunan Province, The Affiliated Changsha Central Hospital, Hengyang Medical School, University of South China, Changsha, China.
这项研究引入了针对癌症的优化声动疗法 (SDT),使用双参数顺序超声波. 这种新的方法增强了抗瘤效应,首先是通过使瘤血管正常化和减轻缺氧,然后激活强烈的细胞杀伤.
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:
- 在癌症治疗中,声动力疗法 (SDT) 的有效性通常受到瘤缺氧和单参数超声波的受限生物效应的限制.
- 开发先进的SDT策略对于改善瘤学治疗结果至关重要.
研究的目的:
- 建立一个优化的SDT策略,使用充满e6 (Ce6) 和氧气 (CMO) 的微气泡.
- 为了研究双参数顺序超声波照射模式,以增强抗瘤效果.
主要方法:
- 开发了装有e6 (Ce6) 和氧气 (CMO) 的微气泡.
- 实施了一种双参数顺序超声波照射:化诱导超声波 (USca),其次是声化学激活超声波 (USsc).
- 评估细胞和体内抗瘤效应,包括瘤体积减少和血管正常化.
主要成果:
- USca预治疗使瘤血管正常化并减轻缺氧,促进Ce6和氧气的释放.
- 仅USsc就显示了血管损伤效应,而连续照射则协同增强了抗瘤疗效.
- 实现了75%的瘤体积减少,超过了经典的SDT模式.
结论:
- 开创了一种用于SDT的双阶段顺序超声波照射模式.
- 证明通过USca进行血管正常化作为后续SDT的敏感化步骤.
- 这种新的SDT策略显示了癌症治疗的高翻译潜力.
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