Abstract |
IL-13Ralpha2 chain, the primary interleukin-13 (IL-13) binding protein, plays an important role in IL-13 binding and internalization. Based on these findings, in our previous study we transiently transfected four cancer cell lines that do not express IL-13Ralpha2 chain and demonstrated that these cells acquired increased sensitivity to IL-13 receptor-targeted recombinant cytotoxin, IL13-PE38QQR, which is composed of IL-13 and a mutated form of a Pseudomonas exotoxin. Although some prostate cancer cell lines express functional IL-13R, they are not highly sensitive to IL-13 cytotoxin. Here we investigated whether human prostate cancer and normal prostate epithelial cell lines express IL-13Ralpha2 chain and whether they can be sensitized to the cytotoxic effect of IL-13 cytotoxin after transient or stable gene transfer of IL-13Ralpha2 chain. Gene transfer of IL-13Ralpha2 chain improved binding activity of IL-13 and sensitivity to IL-13 cytotoxin in vitro. In vivo experiments demonstrated that gene transfer of IL-13Ralpha2 chain dramatically enhanced the antitumor activity of IL-13 cytotoxin in human prostate cancer xenograft models. These results suggest that IL-13R-targeted cytotoxin therapy of prostate cancer may be dramatically enhanced by gene transfer of IL-13Ralpha2 chain and this strategy, the combination of gene therapy and cytotoxin therapy, may be utilized in the treatment of localized prostate cancer.
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Authors | K Kawakami, S R Husain, R K Bright, R K Puri |
Journal | Cancer gene therapy
(Cancer Gene Ther)
Vol. 8
Issue 11
Pg. 861-8
(Nov 2001)
ISSN: 0929-1903 [Print] England |
PMID | 11773976
(Publication Type: Journal Article)
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Chemical References |
- Bacterial Toxins
- Exotoxins
- IL13RA1 protein, human
- Il13ra1 protein, mouse
- Interleukin-13
- Interleukin-13 Receptor alpha1 Subunit
- RNA, Messenger
- Receptors, Interleukin
- Receptors, Interleukin-13
- Virulence Factors
- ADP Ribose Transferases
- Pseudomonas aeruginosa exotoxin A
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Topics |
- ADP Ribose Transferases
- Animals
- Bacterial Toxins
- Exotoxins
(genetics)
- Genetic Therapy
(methods)
- Humans
- Interleukin-13
(metabolism)
- Interleukin-13 Receptor alpha1 Subunit
- Male
- Mice
- Mice, Nude
- Prostatic Neoplasms
(genetics, metabolism, therapy)
- Pseudomonas aeruginosa
(genetics)
- RNA, Messenger
(metabolism)
- Receptors, Interleukin
(genetics)
- Receptors, Interleukin-13
- Reverse Transcriptase Polymerase Chain Reaction
- Transfection
- Transplantation, Heterologous
- Tumor Cells, Cultured
- Virulence Factors
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