title: Loss of tumorigenicity of murine colon carcinoma MC38/0 cell line after transduction with a retroviral vector carrying murine IL-12 genes.
abstract: Cells of transplantable MC38 colon carcinoma of C57BL/6 mice were adapted to growth in vitro as the MC38/0 cell line. Along the establishing process, MC38/0 cells preserved their tumorigenicity. After transduction with a retroviral vector carrying murine interleukin 12 (mIL-12) genes and further selection, stable MC38/IL-12 transductant cells were obtained. These cells produced IL-12 (approx. 2500 ng/ml/5x10(5) cells/48 h) as evaluated in the optimized bioassay. After subcutaneous inoculation into syngeneic mice, the IL-12-modified cells demonstrated reduced tumorigenicity as compared to parental MC38/0 cells. Mice that rejected the MC38/IL-12 tumour became protected against subsequent challenge with MC38/0 cells. The obtained data indicate that the IL-12-transduced murine colon carcinoma cells could be used both as a model tumour for the study of mechanisms of anticancer immunity and/or as an adjuvant to cancer vaccines.
authors.affiliation: Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, Wrocław, Poland. pajtasz@iitd.pan.wroc.pl
authors.forename: E
authors.initials: E
authors.lastname: Pajtasz-Piasecka
authors.forename: A
authors.initials: A
authors.lastname: Szyda
authors.forename: J
authors.initials: J
authors.lastname: Rossowska
authors.forename: A
authors.initials: A
authors.lastname: Krawczenko
authors.forename: M
authors.initials: M
authors.lastname: Indrová
authors.forename: P
authors.initials: P
authors.lastname: Grabarczyk
authors.forename: P
authors.initials: P
authors.lastname: Wysocki
authors.forename: A
authors.initials: A
authors.lastname: Mackiewicz
authors.forename: D
authors.initials: D
authors.lastname: Duś
mesh_terms: D000818:Animals; D045744:Cell Line, Tumor; D003110:Colonic Neoplasms / Q000235:genetics / Q000276:immunology / Q000378:metabolism / Q000473:pathology*; D016207:Cytokines / Q000378:metabolism; D005260:Female; D005805:Genes, MHC Class I; D005822:Genetic Vectors; D049452:Green Fluorescent Proteins; D007371:Interferon-gamma / Q000378:metabolism; D018664:Interleukin-12 / Q000235:genetics* / Q000378:metabolism; D008164:Luminescent Proteins / Q000235:genetics / Q000378:metabolism; D051379:Mice; D008810:Mice, Inbred C57BL; D012190:Retroviridae / Q000235:genetics*; D014161:Transduction, Genetic
chemical_list: D016207:Cytokines; D008164:Luminescent Proteins; D049452:Green Fluorescent Proteins; D018664:Interleukin-12; D007371:Interferon-gamma