氧化纳米反应器DNMF/PLGA使瘤血管微环境和化疗-高热协同治疗成为可能
Ruoyao Wang1, Long Cheng2, Lingyun He2
1Department of Breast and Thyroid Surgery, The Second Affiliated Hospital of Chongqing Medical University, Chongqing, 400010, People's Republic of China.
Journal of nanobiotechnology
|March 14, 2024
概括
这项研究引入了用于三阴性乳腺癌 (TNBC) 治疗的新型纳米粒子. 这些纳米粒子使瘤血管正常化,并降解细胞外基质,改善药物输送和治疗疗效.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术纳米技术
- 在瘤学瘤学.
背景情况:
- 三重阴性乳腺癌 (TNBC) 由于其侵略性和预后不佳,因此存在重大治疗挑战.
- 异常的瘤血管是TNBC进展和治疗耐药性的关键因素.
- 氧化 (NO) 在调节血管生成和血管恒温中发挥着关键作用,为正常化瘤血管提供了潜在的标.
研究的目的:
- 开发一种新的多模式成像引导的纳米粒子系统,用于重塑TNBC中的瘤血管微环境.
- 为了研究NO诱导的血管正常化,细胞外矩阵原体降解和协同化学热过热的综合治疗效应.
- 为了增强纳米颗粒的输送和化疗透到TNBC瘤.
主要方法:
- 在PLGA外内合成纳米粒子 (DNMF/PLGA),其中包括多克索鲁比 (DOX),L-氨酸 (L-Arg) 作为NO捐赠体,以及MnFe2O4纳米粒子.
- 使用磁共振成像 (MRI) 和光声成像 (PAI) 实时监测纳米粒子分布.
- NIR照射触发ROS产生,催化L-Arg到NO,以及DOX激活的H2O2生成,用于级NO释放机制.
主要成果:
- 开发的纳米粒子通过多模式成像有效地追踪瘤.
- NIR照射和DOX激活了产生NO的级联反应,这使瘤血管正常化并降解了细胞外矩阵原.
- 这些纳米颗粒显示出协同作用的化学高温作用,结合了DOX化疗和MnFe2O4光热疗法,以增强TNBC治疗.
结论:
- 多模式成像引导的纳米颗粒有效地重塑了瘤血管微环境和细胞外基质.
- 协同治疗方法显著提高了对TNBC的治疗疗效.
- 这一战略为先进的TNBC治疗和诊断提供了一个有前途的平台.
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