Immuno-gene Therapy Using Colon Cancer Cells Transfeeted with Mature-interleukin-18 cDNA and Ig k Leader Sequence
The bulletin of the Yamaguchi Medical School Volume 49 Issue 3-4
Page 43-47
published_at 2002-12
Title
Immuno-gene Therapy Using Colon Cancer Cells Transfeeted with Mature-interleukin-18 cDNA and Ig k Leader Sequence
Creators
Yoshimura Kiyoshi
Source Identifiers
Creator Keywords
IL-18
gene therapy
plasmid
immunotherapy
Interleukin (IL)-18 is a novel cytokine that induces interferon (IFN)-ν secretion and plays an important role in anti-tumor immunity. In the present study, we constructed plasmid vectors encoding the murine mature-IL-18 cDNA linked with the Igk leader sequence and the pro-IL-18-producing estimate the efficacy of the mature-IL-18 vector and to evaluate IL-18=producing tumor cells as a tumor vaccine. Colon 26 cells were transfected with the above mentioned vectors or with vector alone (mock). The ability of the culture supernatants of mature-IL-18 transfectants to induce IFN-ν secretion was extremely high in comparison to that of pro-IL-18 transfectants. When injected into syngeneic BALB/c mice, the growth of mature-IL-18 transfectants, but not pro-IL-18 transfectants, was significantly less than that in mock transfected cells (p<0.01, by ANOVA and analysis of covariance). Depletion of natural killer cells did not affect the growth of transfectants. The growth inhibitory effects were partially abrogated following treatment with anti-CD4+ and anti-CD8+ antibodies. These date suggest that the rejection of mature-IL-18/colon 26 cells was mediated through T cell activation. Gene therapy using mature-IL-18 transfectants containing a plasmid vector and the Igκ leader sequence may be a useful tumor vaccine.
Languages
eng
Resource Type
departmental bulletin paper
Publishers
Yamaguchi University Graduate School of Medicine
Date Issued
2002-12
File Version
Version of Record
Access Rights
open access
Relations
[ISSN]0513-1812
[NCID]AA00594272
Schools
医学部