Therapeutic effect of gene-therapy in combination with local X-irradiation in a mouse malignant melanoma model. 2005

Guang-Hui Jin, and Shun-Zi Jin, and Yang Liu, and Rui-Ming Xu, and Jian-Zheng Yang, and Xue-Na Pan, and Shu-Zheng Liu
Immunobiology Laboratory, MH Radiobiology Research Unit, Jilin University Norman, Bethune Health Sciences Center, 828 Xinmin Street, Changchun 130021, PR China.

Plasmid containing mIL-18 and B7.1 genes downstream of Egr-1 promoter was constructed and used in gene-radiotherapy on malignant melanoma in C57BL/6J mice implanted with B16 cells followed by exploration of the immunologic mechanism of the therapeutic effect. The treatment with plasmid pEgr-IL-18-B7.1 plus local X-irradiation showed more effective suppression of tumor growth than the treatment with radiation alone, pEgr-IL-18-B7.1 alone, or single gene pEgr-IL-18 (or pEgr-B7.1) combined with local X-irradiation. Anticancer immunity was found to be significantly upregulated in tumor-bearing mice treated with pEgr-IL-18-B7.1 plus local X-irradiation. IL-18 showed no direct killing effect on malignant melanoma cells in vitro, and the mechanism of the combined therapy with pEgr-IL-18-B7.1 and local X-irradiation was apparently related with the stimulation of host anticancer immunity by increased secretion of IL-18 and upregulated immunogenicity of the tumor cells by increased expression of B7.1 on their surface in addition to the direct effect of local X-irradiation on the tumor cells.

UI MeSH Term Description Entries
D008545 Melanoma A malignant neoplasm derived from cells that are capable of forming melanin, which may occur in the skin of any part of the body, in the eye, or, rarely, in the mucous membranes of the genitalia, anus, oral cavity, or other sites. It occurs mostly in adults and may originate de novo or from a pigmented nevus or malignant lentigo. Melanomas frequently metastasize widely, and the regional lymph nodes, liver, lungs, and brain are likely to be involved. The incidence of malignant skin melanomas is rising rapidly in all parts of the world. (Stedman, 25th ed; from Rook et al., Textbook of Dermatology, 4th ed, p2445) Malignant Melanoma,Malignant Melanomas,Melanoma, Malignant,Melanomas,Melanomas, Malignant
D008810 Mice, Inbred C57BL One of the first INBRED MOUSE STRAINS to be sequenced. This strain is commonly used as genetic background for transgenic mouse models. Refractory to many tumors, this strain is also preferred model for studying role of genetic variations in development of diseases. Mice, C57BL,Mouse, C57BL,Mouse, Inbred C57BL,C57BL Mice,C57BL Mice, Inbred,C57BL Mouse,C57BL Mouse, Inbred,Inbred C57BL Mice,Inbred C57BL Mouse
D009368 Neoplasm Transplantation Experimental transplantation of neoplasms in laboratory animals for research purposes. Transplantation, Neoplasm,Neoplasm Transplantations,Transplantations, Neoplasm
D003131 Combined Modality Therapy The treatment of a disease or condition by several different means simultaneously or sequentially. Chemoimmunotherapy, RADIOIMMUNOTHERAPY, chemoradiotherapy, cryochemotherapy, and SALVAGE THERAPY are seen most frequently, but their combinations with each other and surgery are also used. Multimodal Treatment,Therapy, Combined Modality,Combined Modality Therapies,Modality Therapies, Combined,Modality Therapy, Combined,Multimodal Treatments,Therapies, Combined Modality,Treatment, Multimodal,Treatments, Multimodal
D004195 Disease Models, Animal Naturally-occurring or experimentally-induced animal diseases with pathological processes analogous to human diseases. Animal Disease Model,Animal Disease Models,Disease Model, Animal
D005260 Female Females
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D013154 Spleen An encapsulated lymphatic organ through which venous blood filters.
D015316 Genetic Therapy Techniques and strategies which include the use of coding sequences and other conventional or radical means to transform or modify cells for the purpose of treating or reversing disease conditions. Gene Therapy,Somatic Gene Therapy,DNA Therapy,Gene Therapy, Somatic,Genetic Therapy, Gametic,Genetic Therapy, Somatic,Therapy, DNA,Therapy, Gene,Therapy, Somatic Gene,Gametic Genetic Therapies,Gametic Genetic Therapy,Genetic Therapies,Genetic Therapies, Gametic,Genetic Therapies, Somatic,Somatic Genetic Therapies,Somatic Genetic Therapy,Therapies, Gametic Genetic,Therapies, Genetic,Therapies, Somatic Genetic,Therapy, Gametic Genetic,Therapy, Genetic,Therapy, Somatic Genetic
D016923 Cell Death The termination of the cell's ability to carry out vital functions such as metabolism, growth, reproduction, responsiveness, and adaptability. Death, Cell

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