RGD Reference Report - Monocyte chemoattractant protein-1 (MCP-1) gene transduction: an effective tumor vaccine strategy for non-intracranial tumors. - Rat Genome Database

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Monocyte chemoattractant protein-1 (MCP-1) gene transduction: an effective tumor vaccine strategy for non-intracranial tumors.

Authors: Manome, Y  Wen, PY  Hershowitz, A  Tanaka, T  Rollins, BJ  Kufe, DW  Fine, HA 
Citation: Manome Y, etal., Cancer Immunol Immunother. 1995 Oct;41(4):227-35.
RGD ID: 11526112
Pubmed: PMID:7489565   (View Abstract at PubMed)

Recently, there has been renewed interest in the concept of tumor vaccines using genetically engineered tumor cells expressing a variety of cytokines to increase their immunogenicity. Human MCP-1 (JE) is a potent chemoattractant and activator of monocytes and T lymphocytes and thus a good candidate gene for a tumor vaccine. We therefore evaluated the efficacy of vaccines consisting of irradiated tumor cells transduced with the murine MCP-1 gene in the syngeneic 9L gliosarcoma brain tumor model. 9L cell lines stably expressing murine MCP-1 (9L-JE) and control cell lines expressing neomycin 3' phosphotransferase (9L-Neo) were generated by infection with a Moloney murine leukemia retroviral vector. Fisher 344 rats were immunized with intradermal injections of 5 x 10(5) or 2 x 10(6) irradiated (5000 cGy) 9L-JE, 9L-Neo, and wild-type 9L (9L-WT) cells. Two weeks later immunized and non-immunized animals were challenged with various doses of intradermal (5 x 10(6)-5 x 10(7) or intracerebral (2 x 10(4)-5 x 10(5) 9L-WT cells. Intradermal tumors grew in all non-immunized animals. No tumors grew in animals immunized with irradiated 9L-JE or 9L-Neo cells and challenged with inocula of fewer than 5 x 10(5) 9L-WT cells. With higher inocula up to 10(7) cells, tumors appeared in all the animals, but subsequently regressed in the immunized animals. Tumors in animals immunized with 9L-JE were always smaller than tumors in the other groups. In addition, only the 9L-JE vaccine protected against tumor inocula of 5 x 10(7) cells. Thus vaccination with MCP-1-expressing cells was able to protect animals against at least a 100-fold larger number of challenge tumor cells than vaccination with control cells. In contrast to studies with intradermal tumors, immunization with 9L-JE and 9L-Neo produced only minimal protection against intracerebral tumors. There was no significant difference between the 9L-JE and 9L-Neo vaccines in intracerebral challenge. This study suggests that tumor vaccines expressing cytokine genes such as MCP-1 can increase the antitumor response. However, the protective effect of these vaccines appears to be largely limited to intradermal tumors rather than intracerebral tumors.

RGD Manual Disease Annotations    Click to see Annotation Detail View
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
gliosarcoma severityISOCcl2 (Mus musculus)11526112; 11526112mouse gene in a rat modelRGD 
gliosarcoma severityIMP 11526112mouse gene in a rat modelRGD 

Objects Annotated

Genes (Rattus norvegicus)
Ccl2  (C-C motif chemokine ligand 2)

Genes (Mus musculus)
Ccl2  (C-C motif chemokine ligand 2)

Genes (Homo sapiens)
CCL2  (C-C motif chemokine ligand 2)


Additional Information