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Immunogenicity of chimeric MUC1-HER2 vaccine against breast cancer in mice.


ABSTRACT: Objectives:Breast cancer is one of the most common cancers in the world and is on the increase. MUC1 and HER2 as tumor-associated antigens (TAAs) are abnormally expressed to some extent in 75-80% of breast cancers. In our present research, a novel chimeric MUC1-HER2 (HM) protein was designed and used to study whether an immune response can be generated against these TAAs. In vitro analysis of the HER2-MUC1 construct confirmed the co-expression of MUC1 and HER2. Materials and Methods:BALB/c mice were immunized with this novel chimeric protein. The humoral immune response was assessed by enzyme-linked immunosorbent assay (ELISA). Then, BALB/c mice were injected subcutaneously 2×105 4T1-MUC1-HER2 tumor cells. Subsequently, tumor size and tumor necrosis measurements, MTT, cytokines assay and survival test were performed. Results:The results implied a critical role of HER2 and MUC1 antibodies in vaccination against breast cancer. This engineered protein can be a good vaccine to stop breast cancer. Conclusion:The results implied a critical role of HER2 and MUC1 antibodies in vaccination against breast cancer. This engineered protein can be a good vaccine to stop breast cancer.

PROVIDER: S-EPMC5776432 | BioStudies |

REPOSITORIES: biostudies

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