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Black Phosphorus Nanosheet with High Thermal Conversion Efficiency for Photodynamic/Photothermal/Immunotherapy
ACS Biomaterials Science & Engineering ( IF 5.8 ) Pub Date : 2020-08-12 , DOI: 10.1021/acsbiomaterials.0c00984
Danyang Xu 1 , Jun Liu 1 , Yanxing Wang 1 , Yingying Jian 2 , Weiwei Wu 2 , Ruichan Lv 1
Affiliation  

The synergistic treatment through multiple treatment methods can effectively improve the effect of tumor treatment. Phototherapy and immunotherapy are two innovative and promising cancer diagnosis and treatment methods, so they are good candidates for collaborative diagnosis and treatment. Here we report a new inorganic nanosystem, which uses ultrathin black phosphorus (BP) nanosheets (minimum: 13 nm) as carriers and equips with up-conversion luminescence (UCL) nanoparticles as imaging probes, so that the system can generate photothermal and photodynamic effects to treat tumors together with immunotherapy. Especially, the photothermal conversion efficiency can reach 30.84% under the 980 nm laser, which is significantly higher than the conventional Au nanoparticles including nanostars (22.63%) and Au nanorods (23.33%). When the system works in conjunction with immunotherapy, it not only shows a good ability to treat tumors but also can inhibit tumors for a long time and prevent recurrence. Different from the past, in this work, we not only use this strategy to evaluate the performance during the treatment cycle but also observe the mice after the treatment to verify the long-term effect of suppressing tumors. Overall, this study reveals a new inorganic nanosystem and proposes a new strategy for treating tumors in combination with immunotherapy. The present work illustrates the new opportunities for the treatment of primary tumors.

中文翻译:

具有高热转换效率的黑色磷纳米片,可用于光动力/光热/免疫疗法

通过多种治疗方法的协同治疗可以有效提高肿瘤的治疗效果。光疗和免疫疗法是两种创新且有希望的癌症诊断和治疗方法,因此它们是协同诊断和治疗的良好候选者。在这里,我们报告了一个新的无机纳米系统,该系统使用超薄黑磷(BP)纳米片(最小:13 nm)作为载体,并配备了上转换发光(UCL)纳米颗粒作为成像探针,因此该系统可以产生光热和光动力效应与免疫疗法一起治疗肿瘤。特别是,在980 nm激光下,光热转换效率可以达到30.84%,明显高于传统的Au纳米颗粒,包括纳米星(22.63%)和Au纳米棒(23.33%)。当该系统与免疫疗法结合使用时,它不仅显示出良好的治疗肿瘤的能力,而且可以长时间抑制肿瘤并防止复发。与过去不同,在这项工作中,我们不仅使用这种策略来评估治疗周期中的性能,而且还观察了治疗后的小鼠以验证抑制肿瘤的长期效果。总的来说,这项研究揭示了一种新的无机纳米系统,并提出了一种结合免疫疗法治疗肿瘤的新策略。本工作说明了治疗原发肿瘤的新机会。我们不仅使用这种策略来评估治疗周期中的性能,而且还观察了治疗后的小鼠以验证抑制肿瘤的长期效果。总的来说,这项研究揭示了一种新的无机纳米系统,并提出了一种结合免疫疗法治疗肿瘤的新策略。本工作说明了治疗原发肿瘤的新机会。我们不仅使用这种策略来评估治疗周期中的性能,而且还观察了治疗后的小鼠以验证抑制肿瘤的长期效果。总的来说,这项研究揭示了一种新的无机纳米系统,并提出了一种结合免疫疗法治疗肿瘤的新策略。本工作说明了治疗原发肿瘤的新机会。
更新日期:2020-09-14
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