Efficacy of antitumour colon cancer cell vaccine modified by Escherichia coli cytosine deaminase gene / 中华胃肠外科杂志
Chinese Journal of Gastrointestinal Surgery
; (12): 425-428, 2006.
Article
在 Zh
| WPRIM
| ID: wpr-283304
Responsible library:
WPRO
ABSTRACT
<p><b>OBJECTIVES</b>To evaluate the efficacy of antitumour colon cancer cell vaccine modified by escherichia coli cytosine deaminase (EC-CD).</p><p><b>METHODS</b>Mouse colon cancer cell vaccine CT26/CD was established by gene modification using retrovirus plasmid pLCDSN. Its tumorigenicity and effect on liver metastasis model established with wild-type colon cancer were evaluated.</p><p><b>RESULTS</b>CT26/CD was established successfully and proliferated in medium containing 0.6 g/L G418 stably. EC-CD gene expression on these mutant cells was confirmed by RT-PCR. These mutant cells were more sensitive to 5-fluorocytosine (5-FC) compared with the wild-type ones (P=0.000), and presented excellent bystander effect. CT26/CD had the same tumorigenicity as its parental cells (P=0.892). CT26/CD, combined with the prodrug 5-FC, could inhibit tumor progress and live metastasis, and prolonged the survival of the liver metastasis model animals (P=0.000).</p><p><b>CONCLUSION</b>The colon cancer cell vaccine modified by EC-CD presented anti-tumor effect in vivo, when treated with the prodrug.</p>
全文:
1
索引:
WPRIM
主要主题:
Therapeutics
/
Colonic Neoplasms
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Cancer Vaccines
/
Amino Acid Motifs
/
Escherichia coli Proteins
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Cell Line, Tumor
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Cytosine Deaminase
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Therapeutic Uses
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Escherichia coli
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Genetics
限制:
Animals
/
Humans
语言:
Zh
期刊:
Chinese Journal of Gastrointestinal Surgery
年:
2006
类型:
Article