Objective: The objective of the paper is to explore the contrast effect of magnetic resonance target contrast agent RGD and KMnF3 coupling nanoparticle on mice models of breast cancer.
Method: The manganese oleate was prepared to further synthesize the c(RGDyK) peptide coupling KMnF3 nanoparticle. The na-noparticle was subjected to the analysis of the cell relaxation efficiency and cytotoxicity. Based on the results of the former analysis, the prepared materials were applied to the magnetic resonance imaging (MRI) scan for performance analysis and contrast effect observation.
Results: The results have shown that in terms of the contour of the prepared materials, the variation of size and distribution of nanoparticle was little; after several weeks, obvious particle aggregation was hardly observed through visual inspection. In terms of the relaxation and cytotoxicity of the prepared materials, the experimental results have shown that the cell survival rate was relatively high, reaching above 90%; in terms of the application of prepared materials into the mice models of breast cancer, the interaction of c(RGDyK) coupling KMnF3 nanoparticle and polypeptide-integrin could be inferred from the immunohistochemical analysis.
Conclusion: Therefore, the study of the contrast effect of magnetic resonance target contrast agent RGD and KMnF3 cou-pling nanoparticle on mice models of breast cancer proposed in the paper would explore the diagnostic value of nanoparticle as a target contrast agent for tumors. Despite the deficiencies in the experimental process, it could provide the application of contrast agent in the subsequent clinical diagnosis of guidance.