Abstract |
Far-upstream element- binding protein-interacting repressor (FIR) is a transcription factor that inhibits c-Myc expression and has been shown to have antitumor effects in some malignancies. Here, we evaluated the antitumor effects of FIR using fusion gene-deleted Sendai virus (SeV/ΔF) as a nontransmissible vector against head and neck squamous cell carcinoma ( HNSCC). Using in vitro and in vivo xenograft mouse models, we observed efficient expression of green fluorescent protein (GFP) following transduction with the SeV/ΔF vector encoding GFP (GFP-SeV/ΔF) into HNSCC cells. In vitro and in vivo studies revealed that administration of the FIR-encoded SeV/ΔF (FIR-SeV/ΔF) vector exerted significant antitumor effects, suppressed c-Myc expression and induced apoptosis in HNSCC. Additionally, the antitumor effects of FIR or the expression of GFP following administration of the FIR- or GFP-SeV/ΔF vector, respectively, were dependent on the multiplicity of infection or titer. Furthermore, the SeV/ΔF vector itself had no cytotoxic effects. Therefore, the SeV/ΔF vector may be safe and useful for the treatment of HNSCC, allowing for high-titer SeV/ΔF vector administration for anticancer gene therapy. In addition, SeV/ΔF vector-mediated FIR gene therapy demonstrated effective tumor suppression in HNSCC, suggesting that this therapy may have the potential for clinical use as a novel strategy for HNSCC treatment.
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Authors | N Tanaka, K Araki, D Mizokami, Y Miyagawa, T Yamashita, M Tomifuji, Y Ueda, M Inoue, K Matsushita, F Nomura, H Shimada, A Shiotani |
Journal | Gene therapy
(Gene Ther)
Vol. 22
Issue 4
Pg. 297-304
(Apr 2015)
ISSN: 1476-5462 [Electronic] England |
PMID | 25588744
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't)
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Chemical References |
- FARP2 protein, human
- Guanine Nucleotide Exchange Factors
- MYC protein, human
- Proto-Oncogene Proteins c-myc
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Topics |
- Animals
- Cell Line
- Female
- Gene Transfer Techniques
- Genetic Therapy
- Genetic Vectors
- Guanine Nucleotide Exchange Factors
(metabolism)
- Head and Neck Neoplasms
(genetics, metabolism, therapy)
- Heterografts
- Humans
- Mice
- Neoplasm Transplantation
- Proto-Oncogene Proteins c-myc
(metabolism)
- Sendai virus
(metabolism)
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