School of Life and Pharmaceutical Sciences, Dalian University of Technology, Panjin, Liaoning 124221, China.
School of Food and Environment, Dalian University of Technology, Panjin, Liaoning 124221, China.
Biomater Sci. 2021 Nov 23;9(23):7862-7875. doi: 10.1039/d1bm01396c.
The treatment efficiency of the Fenton reaction is expected to be greatly restricted due to problems such as inefficient delivery of Fenton catalysis, limited HO concentration and uneven tumour tissue. Accurate photothermal therapy (PTT) could improve the efficiency of Fenton catalysis to some extent by raising the temperature. However, the heat shock response (HSR) of tumour cells caused by PTT and Fenton reaction would attenuate the treatment effect. In this study, we developed an iron ions-mediated Fenton reaction combined with a PTT treatment platform based on a metal-organic framework, , PPy-CTD@MIL-100@MPCM nanoparticles (PCMM NPs), and further explored the inhibitory effect of PCMM NPs on the heat shock response (HSR). PCMM NPs could accumulate in tumour tissue the coated macrophage cell membranes (MPCMs) to target inflammatory tissues. The photothermal effect of polypyrrole (PPy) accelerated the release of cantharidin (CTD) and iron ions loaded in the PCMM NPs. CTD, as an HSR inhibitor, could inhibit this response of tumour cells and improve the effect of PTT. Meanwhile, the heat generated during the PTT process could improve the efficiency of the Fenton reaction. This study suggested that PCMM NPs could serve as a combined treatment platform to enhance the Fenton reaction based on amplified photothermal therapy.
芬顿反应的治疗效率预计会受到诸多问题的限制,例如芬顿催化的递送效率低、HO 浓度有限以及肿瘤组织不均匀等。准确的光热疗法(PTT)可以通过提高温度在一定程度上提高芬顿催化的效率。然而,PTT 和芬顿反应引起的肿瘤细胞热休克反应(HSR)会减弱治疗效果。在本研究中,我们开发了一种基于金属有机骨架的铁离子介导的芬顿反应与 PTT 治疗平台相结合的方法,即聚吡咯(PPy)-载姜黄素(CTD)@介孔硅包覆 MIL-100(MIL-100@MPCM)纳米粒子(PCMM NPs),并进一步探讨了 PCMM NPs 对热休克反应(HSR)的抑制作用。PCMM NPs 可以通过包覆的巨噬细胞膜(MPCMs)在肿瘤组织中积累,以靶向炎症组织。聚吡咯(PPy)的光热效应加速了负载在 PCMM NPs 中的斑蝥素(CTD)和铁离子的释放。CTD 作为 HSR 抑制剂,能够抑制肿瘤细胞的这种反应,提高 PTT 的效果。同时,PTT 过程中产生的热量可以提高芬顿反应的效率。本研究表明,PCMM NPs 可以作为一种联合治疗平台,通过放大光热疗法来增强基于芬顿反应的治疗效果。