高光热效率的NIR-II AIEgen用于轻度PTT:优化了自然杀手细胞的空间分布,以促进免疫反应
Yan Feng1, Junjun Ni2, Huilin Xie3
1Department of Oncology, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710004, China; The Key Laboratory of Biomedical Information Engineering of Ministry of Education, Bioinspired Engineering and Biomechanics Center (BEBC), School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China; Department of Gastroenterology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, 710061, China.
Biomaterials
|April 20, 2025
概括
一个新的有机分子,C12T-BBT,实现了高光热转换效率,用于轻度光热疗法. 这种疗法通过改善近距离来增强天然杀手细胞对瘤的活性,提供了一种新的癌症治疗策略.
科学领域:
- 生物医学工程 生物医学工程
- 材料科学 材料科学 材料科学
- 免疫学 免疫学 免疫学
背景情况:
- 有机光热剂 (PTA) 对于轻度光热疗法 (PTT) 是至关重要的,因为它们具有高光热转换效率 (PCE) 和生物相容性.
- 开发具有高PCE的PTA仍然是一个挑战,而PTT诱导的温度梯度对自然杀手 (NK) 细胞对瘤活动的影响尚未得到充分研究.
研究的目的:
- 设计和合成一种新的近红外II (NIR-II) 聚合诱导发射 (AIE) 分子C12T-BBT,用于增强PTT.
- 研究轻度PTT对NK细胞-瘤细胞相互作用的影响及其治疗含义.
主要方法:
- 使用长链的烯 π 桥,将电子供体 (TPA) 与电子受体 (BBT) 结合起来,形成 C12T-BBT.
- 用于体内研究的水溶性cRGD@C12T-BBT纳米颗粒的配方.
- 使用机器学习空间分析评估PCE,NIR-II成像,瘤消除和NK细胞与瘤细胞的近距离.
主要成果:
- 在C12T-BBT中,PCE高达84.7%.
- 在体内研究显示了有效的NIR-II成像和瘤消除cRGD@C12T-BBT纳米粒子.
- 轻度PTT显著降低了NK细胞和瘤细胞之间的距离 (从25.6μm降至10.6μm),增强了抗瘤免疫反应.
结论:
- 新的C12T-BBT分子显示出作为轻度PTT的PTA的优秀潜力.
- 温和的PTT有效调节瘤微环境,以增强NK细胞介导的细胞毒性.
- 这项研究提出了一个有前途的联合抗瘤策略,通过优化NK-瘤细胞的邻近性来整合轻度PTT和NK细胞免疫疗法.
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