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Ref Type Journal Article
PMID (15608394)
Authors Baek JH, Agarwal ML, Tubbs RR, Vladisavljevic A, Tomita H, Bukowski RM, Milsom JW, Kim JM, Kwak JY
Title In vivo recombinant adenovirus-mediated p53 gene therapy in a syngeneic rat model for colorectal cancer.
Abstract Text The p53 gene has a significant role in controlling genomic stability of cancer. The purpose of this study was to evaluate the tumor response of allograft colorectal tumor treated with Ad5CMV-p53 in a syngeneic rat model. Two weeks after the inoculation of WB-2054-M5 tumor cells in the flank of rats, rats were randomly assigned by tumor size to one of three groups (n=18 in each): phosphate buffered saline (PBS), Ad5CMV, and Ad5CMV-p53. Recombinant adenovirus or PBS was administered through intratumoral injection at three divided doses every other day for 4 weeks. Apoptosis of the tumors was evaluated using TUNEL assay. After 2 and 4 weeks of treatment, the volume (cm(3)) of tumors in PBS, Ad5CMV, and Ad5CMV-p53 was as follows: 2 week: 1.66 +/-0.43, 1.40 +/-0.47, 0.75 +/-0.26 (p<0.001), 4 week: 4.41 +/-0.88, 3.93 +/-1.86, 2.33 +/-0.51 (p<0.001). Tumor growth showed no statistically significant difference between the PBS and Ad5CMV groups (6-week vol. p=0.32). The TUNEL assay results revealed more apparent apoptotic cells in Ad5CMV-p53-treated tumors than in other groups. Growth of allograft colorectal cancer in the syngeneic rat model was significantly suppressed by intratumoral Ad5CMV-p53 gene therapy. These results demonstrate that gene replacement therapy with p53 may provide a novel modality of treatment in conjunction with other present treatments for metastatic colorectal cancer.


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Molecular Profile Treatment Approach
Gene Name Source Synonyms Protein Domains Gene Description Gene Role
Therapy Name Drugs Efficacy Evidence Clinical Trials
Drug Name Trade Name Synonyms Drug Classes Drug Description
Gene Variant Impact Protein Effect Variant Description Associated with drug Resistance
Molecular Profile Indication/Tumor Type Response Type Therapy Name Approval Status Evidence Type Efficacy Evidence References
TP53 loss colorectal cancer predicted - sensitive Ad5CMV-p53 gene Preclinical Actionable In a preclinical study, Ad5CMV-p53 gene therapy suppressed growth of allograft colorectal cancer in rat models (PMID: 15608394). 15608394