Immunizing and curative potential of replicating and nonreplicating murine mammary adenocarcinoma cells engineered with interleukin (IL)-2, IL-4, IL-6, IL-7, IL-10, tumor necrosis factor alpha, granulocyte-macrophage colony-stimulating factor, and gamma-interferon gene or admixed with conventional adjuvants.
To evaluate the efficacy of vaccinations with cytokine-gene-transduced tumor cells, BALB/c mice were challenged with 1 x 10(5) parental cells of a syngeneic adenocarcinoma cell line (TSA-pc). No protection was observed in mice immunized 30 days earlier with 1 x 10(5) nonreplicating mitomycin-C-treated TSA-pc alone, or with Corynebacterium parvum or Complete Freund Adjuvant (CFA). Ten to 30% of mice immunized with nonreplicating cells engineered to produce interleukin (IL)-2, IL-4, IL-6, IL-7, IL-10, tumor necrosis factor alpha, granulocyte-macrophage colony-stimulating factor, and gamma-interferon gene were protected. Fifty % of mice immunized with replicating TSA-pc admixed with C. parvum and 80-100% of mice immunized with replicating tumor cells transduced with IL-2, IL-4, IL-7, IL-10, or gamma-interferon gene were protected. No cure was afforded by TSA cells admixed with C. parvum or CFA, nor by TSA cells engineered with IL-6, granulocyte-macrophage colony-stimulating factor, and tumor necrosis factor alpha gene injected starting 1 day after TSA-pc challenge. Complete tumor regression, however, was obtained in 10-20% of mice treated with TSA cells transduced with IL-2, IL-4, IL-7, or IL-10 and in 30% of those treated with TSA cells transduced with gamma-interferon gene.
Department of Clinical and Biological Sciences, University of Turin, Italy.
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A
Allione
M
M
Consalvo
P
P
Nanni
P L
PL
Lollini
F
F
Cavallo
M
M
Giovarelli
M
M
Forni
A
A
Gulino
M P
MP
Colombo
P
P
Dellabona
D000230:Adenocarcinoma / Q000276:immunology / Q000628:therapy*; D000276:Adjuvants, Immunologic / Q000494:pharmacology*; D000818:Animals; D016207:Cytokines / Q000235:genetics*; D005260:Female; D016178:Granulocyte-Macrophage Colony-Stimulating Factor / Q000235:genetics; D007114:Immunization; D007371:Interferon-gamma / Q000235:genetics; D007378:Interleukins / Q000235:genetics; D008325:Mammary Neoplasms, Experimental / Q000276:immunology / Q000628:therapy*; D051379:Mice; D008807:Mice, Inbred BALB C; D009368:Neoplasm Transplantation; D014162:Transfection; D014409:Tumor Necrosis Factor-alpha / Q000235:genetics
D000276:Adjuvants, Immunologic; D016207:Cytokines; D007378:Interleukins; D014409:Tumor Necrosis Factor-alpha; D007371:Interferon-gamma; D016178:Granulocyte-Macrophage Colony-Stimulating Factor