Abstract
High-efficiency treatment for tumor is not easy to achieve owing to the existence of metastasis, which remains the arch-criminal of most tumor deaths. Conventional chemotherapy exhibits insufficient inhibitory efficiency on tumor metastasis and more powerful strategies to conquer metastatic tumors are urgently needed. In this study, a rational chemoimmunotherapy strategy was adopted to treat highly aggressive melanoma based on a newly developed multifunctional nanoplatform. Firstly, immunoadjuvant cytosine-phosphate-guanine oligonucleotides (CpG ODNs) were used to boost the doxorubicin (DOX)-elicited immune responses, which synergistically suppressed tumor growth and metastasis. And the anti-metastatic low molecular weight heparin (LMWH) was also integrated, thus multiple anti-metastatic effects to against tumor metastasis were achieved. Methods: G4 PAMAM was serving as the main support to conjugate DOX by pH-sensitive hydrazone bond (PPD) and the synthesized conjugates were confirmed by 1H-NMR spectra, IR spectra and HRMS. Immunoadjuvant CpG ODNs were loaded by electrostatic adsorption to formulate PPD/CpG. After the coating of anti-metastatic LMWH, the designed LMWH/PPD/CpG was fabricated and characterized. The platelets-rela...Continue Reading
Citations
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