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Osteotropic peptide-mediated bone targeting for photothermal treatment of bone tumors
- Wang, Yitong, Yang, Jian, Liu, Hongmei, Wang, Xinyu, Zhou, Zhengjie, Huang, Quan, Song, Dianwen, Cai, Xiaopan, Li, Lin, Lin, Kaili, Xiao, Jianru, Liu, Peifeng, Zhang, Qiang, Cheng, Yiyun
- Biomaterials 2017 v.114 pp. 97-105
- alloys, aspartic acid, hydroxyapatite, nanoparticles, neoplasms, radiotherapy, temperature
- The treatment of bone tumors is a challenging problem due to the inefficient delivery of therapeutics to bone and the bone microenvironment-associated tumor resistance to chemo- and radiotherapy. Here, we developed a bone-targeted nanoparticle, aspartate octapeptide-modified dendritic platinum-copper alloy nanoparticle (Asp-DPCN), for photothermal therapy (PTT) of bone tumors. Asp-DPCN showed much higher affinity toward hydroxyapatite and bone fragments than the non-targeted DPCN in vitro. Furthermore, Asp-DPCN accumulated more efficiently around bone tumors in vivo, and resulted in a higher temperature in bone tumors during PTT. Finally, Asp-DPCN-mediated PTT not only efficiently depressed the tumor growth but also significantly reduced the osteoclastic bone destruction. Our study developed a promising therapeutic approach for the treatment of bone tumors.