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Intraperitoneal Administration of a Tumor-Associated Antigen SART3, CD40L, and GM-CSF Gene-Loaded Polyplex Micelle Elicits a Vaccine Effect in Mouse Tumor Models
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Intraperitoneal Administration of a Tumor-Associated Antigen SART3, CD40L, and GM-CSF Gene-Loaded Polyplex Micelle Elicits a Vaccine Effect in Mouse Tumor Models
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Intraperitoneal Administration of a Tumor-Associated Antigen SART3, CD40L, and GM-CSF Gene-Loaded Polyplex Micelle Elicits a Vaccine Effect in Mouse Tumor Models
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Journal Article
Intraperitoneal Administration of a Tumor-Associated Antigen SART3, CD40L, and GM-CSF Gene-Loaded Polyplex Micelle Elicits a Vaccine Effect in Mouse Tumor Models
2014
Overview
Polyplex micelles have demonstrated biocompatibility and achieve efficient gene transfection in vivo. Here, we investigated a polyplex micelle encapsulating genes encoding the tumor-associated antigen squamous cell carcinoma antigen recognized by T cells-3 (SART3), adjuvant CD40L, and granulocyte macrophage colony-stimulating factor (GM-CSF) as a DNA vaccine platform in mouse tumor models with different types of major histocompatibility antigen complex (MHC). Intraperitoneally administrated polyplex micelles were predominantly found in the lymph nodes, spleen, and liver. Compared with mock controls, the triple gene vaccine significantly prolonged the survival of mice harboring peritoneal dissemination of CT26 colorectal cancer cells, of which long-term surviving mice showed complete rejection when re-challenged with CT26 tumors. Moreover, the DNA vaccine inhibited the growth and metastasis of subcutaneous CT26 and Lewis lung tumors in BALB/c and C57BL/6 mice, respectively, which represent different MHC haplotypes. The DNA vaccine highly stimulated both cytotoxic T lymphocyte and natural killer cell activities, and increased the infiltration of CD11c+ DCs and CD4+/CD8a+ T cells into tumors. Depletion of CD4+ or CD8a+ T cells by neutralizing antibodies deteriorated the anti-tumor efficacy of the DNA vaccine. In conclusion, a SART3/CD40L+GM-CSF gene-loaded polyplex micelle can be applied as a novel vaccine platform to elicit tumor rejection immunity regardless of the recipient MHC haplotype.
Publisher
Public Library of Science,Public Library of Science (PLoS)
Subject
/ Animals
/ Antigens
/ Antigens, Neoplasm - genetics
/ Antigens, Neoplasm - immunology
/ Antigens, Neoplasm - metabolism
/ Cancer Vaccines - immunology
/ DNA
/ Female
/ Genes
/ Granulocyte-macrophage colony-stimulating factor
/ Granulocyte-Macrophage Colony-Stimulating Factor - genetics
/ Granulocyte-Macrophage Colony-Stimulating Factor - immunology
/ Granulocyte-Macrophage Colony-Stimulating Factor - metabolism
/ Immunity
/ Liver
/ Lungs
/ Major histocompatibility complex
/ Medicine and Health Sciences
/ Melanoma
/ Mice
/ Micelles
/ Oncology
/ Peptides
/ Plasmids
/ Research and Analysis Methods
/ RNA-Binding Proteins - genetics
/ RNA-Binding Proteins - immunology
/ RNA-Binding Proteins - metabolism
/ Spleen
/ Surgery
/ T cells
/ Tumors
/ Vaccines
