Peroxidase-mimicking evodiamine/indocyanine green nanoliposomes for multimodal imaging-guided theranostics for oral squamous cell carcinoma

• Main Authors: Zheng Wei, Huihui Zou, Gongyuan Liu, Chuanhui Song, Chuanchao Tang, Sheng Chen, Guorong Zhang, Jianchuan Ran, Yufeng Wang, Xiteng Yin, Yu Cai, Wei Han
• Format: Article
• Language: English
• Published: KeAi Communications Co., Ltd. 2021-07-01
• Series: Bioactive Materials
• Subjects: Oral squamous cell carcinoma; Evodiamine; Peroxidase-mimicking; Trimodal antitumor therapy
• Online Access: http://www.sciencedirect.com/science/article/pii/S2452199X2030342X

Here, evodiamine (EVO) and the photosensitizer indocyanine green (ICG) were integrated into a liposomal nanoplatform for noninvasive diagnostic imaging and combinatorial therapy against oral squamous cell carcinoma (OSCC). EVO, as an active component extracted from traditional Chinese medicine, not only functioned as an antitumor chemotherapeutic agent but was also capable of 68Ga-chelation, thus working as a contrast agent for positron emission tomography/computed tomography (PET/CT) imaging. Moreover, EVO could exhibit peroxidase-like catalytic activity, converting endogenous tumor H2O2 into cytotoxic reactive oxygen species (ROS), enabling Chemo catalytic therapy beyond the well-known chemotherapy effect of EVO. As proven by in vitro and in vivo experiments, guided by optical imaging and PET/CT imaging, we show that the theragnostic liposomes have a significant inhibiting effect on in situ tongue tumor through photodynamic therapy combined with chemodynamic chemotherapy.