[Construction of HA-1-DC nucleic-acid vaccine and induction of specific cytotoxic T lymphocytes].

Abstract

The purpose of this study was to construct a HA-1-DC nucleic acid vaccine and to induce anti-leukemia effect after hematopoietic stem cell transplantation (HSCT). The dendritic cells (DCs) were generated from HSCT donors in vitro, and its immunologic activity was studied by using flow cytometry and mix lymphocyte reaction. HA-1 gene was electroporated into the cultured DCs to construct a DC nucleic acid vaccine. After transfecting for 48 hours, the expression of HA-1 protein was detected by Western blot. The DCs were cultured with isogenic lymphocytes to induce specific cytotoxic T lymphocytes (CTLs). The cytotoxicity of the CTLs was detected by LDH assay. The results showed that the DCs derived from peripheral blood monocytes (PBMCs) expressed the DC phenotype, and were effective in stimulating proliferation of the allogenic lymphocytes. After electroporating for 48 hours, HA-1 protein was detected by Western blot. The cytotoxity of inducing CTLs was higher than that in the control group. It is concluded that the minor histocompatibility antigen HA-1 can be considered as a target of immunotherapy against leukemia after HSCT.

• Authors: Ya-Ya Wang, Dong-Hua Zhang, Wen-Li Liu, Hong-Sheng Zhou, Lu Zhang, Min Dai, Zheng-Qian Huang, Huo Tan, Ping Xiong
• Journal: Zhongguo shi yan xue ye xue za zhi (Zhongguo Shi Yan Xue Ye Xue Za Zhi) Vol. 14 Issue 6 Pg. 1178-82 (Dec 2006) ISSN: 1009-2137 [Print] China
• PMID: 17204189 (Publication Type: English Abstract, Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Cancer Vaccines
• HA-1 antigen
• Minor Histocompatibility Antigens
• Oligopeptides
• Vaccines, DNA

Topics

• Cancer Vaccines (biosynthesis, genetics, immunology)
• Cells, Cultured
• Dendritic Cells (cytology, immunology)
• Electroporation
• Graft vs Host Disease (prevention & control)
• Hematopoietic Stem Cell Transplantation (adverse effects)
• Humans
• Leukemia (immunology, therapy)
• Minor Histocompatibility Antigens (genetics, immunology)
• Oligopeptides (genetics, immunology)
• T-Lymphocytes, Cytotoxic (immunology)
• Transfection
• Vaccines, DNA (biosynthesis, genetics, immunology)