PMID- 12450042 OWN - NLM STAT- MEDLINE DCOM- 20021213 LR - 20121115 IS - 0022-3085 (Print) IS - 0022-3085 (Linking) VI - 97 IP - 5 DP - 2002 Nov TI - Administration of interleukin-12 and -18 enhancing the antitumor immunity of genetically modified dendritic cells that had been pulsed with Semliki forest virus-mediated tumor complementary DNA. PG - 1184-90 AB - OBJECT: Immunogene therapy for malignant gliomas was further investigated in this study to improve its therapeutic efficacy. METHODS: Dendritic cells (DCs) were isolated from bone marrow and pulsed with phosphate-buffered saline or Semliki Forest virus (SFV)-mediated 203 glioma complementary (c)DNA with or without systemic administration of interleukin (IL)-12 and IL-18 to treat mice bearing the 203 glioma. To study the immune mechanisms involved in tumor regression, the authors investigated tumor growth of an implanted 203 glioma model in T cell subset-depleted mice and in interferon (IFN) gamma-neutralized mice. To examine the protective immunity produced by tumor inoculation, a repeated challenge of 203 glioma cells was given by injecting the cells into the left thighs of surviving mice and the growth of these cells was monitored. The authors demonstrated that the combined administration of SFV-cDNA, IL-12, and IL-18 produced significant antitumor effects against the growth of murine glioma cells in vivo and also can induce specific antitumor immunity. The synergic effects of the combination of SFV-cDNA, IL-12, and IL-18 in vivo were also observed to coincide with markedly augmented IFN-gamma production. The antitumor effects of this combined therapy are mediated by CD4+ and CD8+ T cells and by NK cells. These results indicate that the use of IL-18 and IL-12 in DC-based immunotherapy for malignant glioma is beneficial. CONCLUSIONS: Immunogene therapy combined with DC therapy, IL-12, and IL-18 may be an excellent candidate in the development of a new treatment protocol. The self-replicating SFV system may therefore provide a novel approach for the treatment of malignant gliomas. FAU - Yamanaka, Ryuya AU - Yamanaka R AD - Clinical Gene Therapy Branch, National Human Genome Research Institute, National Institutes of Health, Bethesda, Maryland, USA. ryaman@pop11.odn.ne.jp FAU - Yajima, Naoki AU - Yajima N FAU - Tsuchiya, Naoto AU - Tsuchiya N FAU - Honma, Junpei AU - Honma J FAU - Tanaka, Ryuichi AU - Tanaka R FAU - Ramsey, Jay AU - Ramsey J FAU - Blaese, Michael AU - Blaese M FAU - Xanthopoulos, Kleanthis G AU - Xanthopoulos KG LA - eng PT - Journal Article PL - United States TA - J Neurosurg JT - Journal of neurosurgery JID - 0253357 RN - 0 (DNA, Complementary) RN - 0 (DNA, Neoplasm) RN - 0 (Interleukin-18) RN - 187348-17-0 (Interleukin-12) RN - 82115-62-6 (Interferon-gamma) SB - IM MH - Animals MH - Antibody Formation/physiology MH - CD4-Positive T-Lymphocytes/physiology MH - CD8-Positive T-Lymphocytes/physiology MH - DNA, Complementary/therapeutic use MH - DNA, Neoplasm/therapeutic use MH - Dendritic Cells/physiology MH - *Genetic Therapy MH - Genetic Vectors MH - Glioma/genetics/immunology/*therapy MH - *Immunotherapy MH - Interferon-gamma/physiology MH - Interleukin-12/*therapeutic use MH - Interleukin-18/*therapeutic use MH - Killer Cells, Natural/physiology MH - Mice MH - Semliki forest virus/genetics MH - T-Lymphocytes, Cytotoxic/physiology MH - Tumor Cells, Cultured EDAT- 2002/11/27 04:00 MHDA- 2002/12/17 04:00 CRDT- 2002/11/27 04:00 PHST- 2002/11/27 04:00 [pubmed] PHST- 2002/12/17 04:00 [medline] PHST- 2002/11/27 04:00 [entrez] AID - 10.3171/jns.2002.97.5.1184 [doi] PST - ppublish SO - J Neurosurg. 2002 Nov;97(5):1184-90. doi: 10.3171/jns.2002.97.5.1184.