通过近红外-III光激发光合作用来调节瘤微生物群
Feiyu Li1, Bingzhu Zheng2, Jiafei Chen3
1State Key Laboratory of Silicon and Advanced Semiconductor Materials, School of Materials Science and Engineering, Zhejiang University, Hangzhou 310058, China.
ACS nano
|April 1, 2025
概括
这项研究引入了一种使用藻类和纳米颗粒来调节瘤微生物组的新生物混合体. 这种方法利用近红外光来抑制瘤生长并激活抗瘤免疫力.
科学领域:
- 生物医学工程 生物医学工程
- 癌症治疗 癌症治疗
- 微生物组研究 微生物组研究
背景情况:
- 瘤微生物组显著影响癌症的进展和转移.
- 向瘤微生物组是一个有希望的治疗策略.
- 瘤微环境经常表现出缺氧,影响治疗疗效.
研究的目的:
- 通过1550nm光来研究一种用于调节瘤微生物组的生物混合系统.
- 评估这种生物混合体在抑制瘤生长和调节瘤微环境方面的潜力.
- 探索治疗引起的免疫调节效应和长期免疫记忆.
主要方法:
- 通过将微藻*Chlorella*与基于Er的核心-shell上转化纳米颗粒配合,开发一种生物混合体.
- 利用1550纳米的光激发来触发生物混合体中的氧化光合作用.
- 评估生物混合体对瘤缺氧,微生物组合,瘤生长和体内免疫反应的影响.
主要成果:
- 这种生物混合物在1550纳米光线下成功进行了氧化光合作用,缓解了瘤缺氧.
- 观察到瘤微生物组的显著变化,导致明显的瘤生长抑制.
- 该疗法证明了对由于透1550nm光的深层瘤的疗效.
- 观察到免疫激活,将"冷"瘤转化为"热"瘤,并建立免疫记忆.
结论:
- 开发的生物混合体通过调节瘤微生物组,为癌症提供了一种新的治疗策略.
- 这种方法有效地抑制瘤生长,特别是深层瘤,通过低氧缓解和免疫调节.
- 该疗法诱导了一个强大而持久的抗瘤免疫反应.
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