Research progress of bone-targeted drug delivery system on metastatic bone tumors

Bone metastases are common in malignant tumors and the effect of conventional treatment is limited. How to effectively inhibit tumor bone metastasis and deliver the drug to the bone has become an urgent issue to be solved. While bone targeting drug delivery systems have obvious advantages in the treatment of bone tumors. The research on bone-targeted anti-tumor therapy has made significant progress in recent years. We introduced the related tumor pathways of bone metastases. The tumor microenvironment plays an important role in met-astatic bone tumors. We introduce a drug-loading systems based on different environment-responsive nano -composites for anti-tumor and anti-metastatic research. According to the process of bone metastases and the structure of bone tissue, we summarized the information on bone-targeting molecules. Bisphosphate has become the first choice of bone-targeted drug delivery carrier because of its affinity with hydroxyapatite in bone. Therefore, we sought to summarize the bone-targeting molecule of bisphosphate to identify the modification effect on bone-targeting. And this paper discusses the relationship between bisphosphate bone targeting mo-lecular structure and drug delivery carriers, to provide some new ideas for the research and development of bone -targeting drug delivery carriers. Targeted therapy will make a more outstanding contribution to the treatment of tumors.

Automated summary

This study introduces the importance of bone-targeted drug delivery systems in cancer treatment and summarizes recent research on bone-targeted anti-tumor therapy, providing new ideas. Bisphosphate is the preferred drug delivery carrier for bone targeting, and its molecular structure plays a crucial role in drug delivery.