生物活性性STING纳米激素激剂协同作用NIR-II温和光热疗法原始强大和长期抗癌免疫力
Wen Ma1,2, Rui Sun1,2, Longguang Tang3
1Department of Laboratory Medicine, Dongguan Institute of Clinical Cancer Research, Affiliated Dongguan Hospital, Southern Medical University, Dongguan, 523018, China.
Advanced materials (Deerfield Beach, Fla.)
|September 11, 2023
概括
新的纳米药物向瘤微环境,激活STING通路,增强癌症免疫治疗. 这种方法使用温和的光热疗法和持续的药物释放,以获得强大的长期抗癌免疫力和瘤根除.
科学领域:
- 免疫学 免疫学 免疫学
- 纳米医学是一种纳米医学.
- 生物医学工程 生物医学工程
背景情况:
- 干扰素基因刺激器 (STING) 途径是癌症免疫治疗的有希望的目标.
- 小分子STING激动剂面临着诸如瘤积累不良和短效持续时间等挑战.
- 制定克服这些局限性的策略对于有效的癌症治疗至关重要.
研究的目的:
- 开发一种新型纳米药物,该药物与瘤细胞外基质 (ECM) 结,以持续释放药物并增强STING通路激活.
- 为了利用轻度光热疗法 (PTT) 和近红外 (NIR-II) 成像用于导向癌症治疗.
- 评估开发的纳米医学的治疗疗效和免疫启动能力.
主要方法:
- 合成基于STING激动剂的光免疫异体纳米药物 (SAPTN) 具有NIR-II光子特性.
- 将SAPTN在瘤ECM上,以缓慢和连续释放DABZI (STING激动剂).
- 使用轻度PTT激活了SAPTN,并评估了它在小鼠的 ортотоп乳腺瘤模型中的影响.
主要成果:
- 在瘤微环境中,SAPTN证明了STING激动剂的有效积累和持续释放.
- 温和的PTT与释放的STING激动剂相结合,协同诱导了强大而持久的抗癌免疫力.
- 在~100%的治疗小鼠中观察到完全的瘤根除,持续的无瘤存活.
- 证明了免疫介导的腹作用,抑制了远部瘤的生长.
结论:
- 开发的ECM定纳米药物 (SAPTN) 有效地克服了传统STING激动剂的局限性.
- 这种方法主要是系统性抗癌免疫,导致显著的瘤根除和长期存活.
- SAPTN代表了一种多功能光活性纳米医学平台,用于增强癌症治疗学.
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