College of Pharmaceutical Sciences, Zhejiang University of Technology, Hangzhou, P.R. China.
Institute of Laser Advanced Manufacturing, Zhejiang University of Technology, Hangzhou, Zhejiang, P.R. China.
Drug Deliv. 2023 Dec;30(1):2232950. doi: 10.1080/10717544.2023.2232950.
Conventional treatments for tumors were frequently accompanied by drawbacks and side effects. It might be useful to use the revolutionary microneedle technology which combines photothermal therapy with tumor immunotherapy. In this study, we created a microneedle drug delivery system with mercapto-modified gold nanorods and immune checkpoint blocker anti-PD-1 polypeptide. With good mechanical strength, the microneedle system can efficiently penetrate the skin and deliver drugs. When inserted into human skin, anti-PD-1 peptides and gold nanorods can be released, boosting the capacity of cytotoxic T lymphocytes to destroy tumor cells. Additionally, the elimination of the tumor is aided by the production of heat while being exposed to near-infrared light. This microneedle drug delivery system can enhance the immunological reaction and prolong the survival time of mice. Moreover, it has been demonstrated that the system has mild toxic and side effects on normal tissues and can effectively inhibit the growth of tumors, indicating a bright prospect for the treatment of cancers.
肿瘤的传统治疗方法常常伴随着缺点和副作用。利用结合光热疗法和肿瘤免疫疗法的革命性微针技术可能会很有用。在这项研究中,我们创建了一种带有巯基修饰的金纳米棒和免疫检查点阻断剂抗 PD-1 多肽的微针药物递送系统。该微针系统具有良好的机械强度,可以有效地穿透皮肤并输送药物。当插入人体皮肤时,抗 PD-1 肽和金纳米棒可以被释放,增强细胞毒性 T 淋巴细胞破坏肿瘤细胞的能力。此外,在近红外光照射下产生的热量有助于消除肿瘤。这种微针药物递送系统可以增强免疫反应并延长小鼠的生存时间。此外,已经证明该系统对正常组织具有轻微的毒性和副作用,并且可以有效地抑制肿瘤的生长,这表明该系统在癌症治疗方面有广阔的前景。