Antibody-mediated p53 protein therapy prevents liver metastasis in vivo
| Autor: | Sophia S. Chang, Laurice K. Fischer, Robert Aragon, Robert N. Nishimura, Richard H. Weisbart, Grace Chan, Michael B. Lilly, Scott W. Baldwin, Mark E. Reeves, James E. Hansen, Jacqueline J. Carter |
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| Rok vydání: | 2007 |
| Předmět: |
Cancer Research
Pathology medicine.medical_specialty Colorectal cancer medicine.drug_class Recombinant Fusion Proteins Monoclonal antibody Metastasis Mice Liver Neoplasms Experimental In vivo Cell Line Tumor medicine Animals Humans Immunoglobulin Fragments Ovarian Neoplasms Mice Inbred BALB C biology business.industry Antibodies Monoclonal medicine.disease In vitro Oncology Cancer cell Colonic Neoplasms Cancer research biology.protein Immunohistochemistry Female Antibody Tumor Suppressor Protein p53 business |
| Zdroj: | Cancer research. 67(4) |
| ISSN: | 0008-5472 |
| Popis: | To evaluate the clinical efficacy of monoclonal antibody (mAb) 3E10 Fv antibody-mediated p53 protein therapy, an Fv-p53 fusion protein produced in Pichia pastoris was tested on CT26.CL25 colon cancer cells in vitro and in vivo in a mouse model of colon cancer metastasis to the liver. In vitro experiments showed killing of CT26.CL25 cells by Fv-p53 but not Fv or p53 alone, and immunohistochemical staining confirmed that Fv was required for transport of p53 into cells. Prevention of liver metastasis in vivo was tested by splenic injection of 100 nmol/L Fv-p53 10 min and 1 week after injection of CT26.CL25 cancer cells into the portal vein of BALB/c mice. Mice were sacrificed 1 week after the second injection of Fv-p53 and assigned a quantitative metastasis score. Control mice had an average metastasis score of 3.3 ± 1.3, whereas mice treated with Fv-p53 had an average metastasis score of 0.8 ± 0.4 (P = 0.004). These results indicate that Fv-p53 treatment had a profound effect on liver metastasis and represent the first demonstration of effective full-length p53 protein therapy in vivo. mAb 3E10 Fv has significant clinical potential as a mediator of intracellular and intranuclear delivery of p53 for prevention and treatment of cancer metastasis. [Cancer Res 2007;67(4):1769–74] |
| Databáze: | OpenAIRE |
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