Abstract
The antitumoral effects that follow the local delivery of the N-terminal fragment of human plasminogen (angiostatin K3) have been studied in two xenograft murine models. Angiostatin delivery was achieved by a defective adenovirus expressing a secretable angiostatin K3 molecule from the cytomegalovirus promoter (AdK3). In in vitro studies, AdK3 selectively inhibited endothelial cell proliferation and disrupted the G 2 /M transition induced by M-phase-promoting factors. AdK3-infected endothelial cells showed a marked mitosis arrest that correlated with the down-regulation of the M-phase phosphoproteins. A single intratumoral injection of AdK3 into preestablished rat C6 glioma or human MDA-MB-231 breast carcinoma grown in athymic mice was followed by a significant arrest of tumor growth, which was associated with a suppression of neovascularization within and at the vicinity of the tumors. AdK3 therapy also induced a 10-fold increase in apoptotic tumor cells as compared with a control adenovirus. Furthermore, we showed that systemic injection of AdK3 delayed C6 tumor establishment and growth, confirming that angiostatin can function in a paracrin manner. Our data support the concept that targeted antiangiogenesis, using adenovirus-mediated gene transfer, represents a promising alternative strategy for delivering antiangiogenic factors as their bolus injections present unsolved pharmacological problems.
Bibliography
Griscelli, F., Li, H., Bennaceur-Griscelli, A., Soria, J., Opolon, P., Soria, C., Perricaudet, M., Yeh, P., & Lu, H. (1998). Angiostatin gene transfer: Inhibition of tumor growth in vivo by blockage of endothelial cell proliferation associated with a mitosis arrest. Proceedings of the National Academy of Sciences, 95(11), 6367â6372.
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Dates
Type | When |
---|---|
Created | 23 years, 1 month ago (July 26, 2002, 10:40 a.m.) |
Deposited | 3 years, 4 months ago (April 13, 2022, 3:49 p.m.) |
Indexed | 1 month ago (July 30, 2025, 9:58 a.m.) |
Issued | 27 years, 3 months ago (May 26, 1998) |
Published | 27 years, 3 months ago (May 26, 1998) |
Published Online | 27 years, 3 months ago (May 26, 1998) |
Published Print | 27 years, 3 months ago (May 26, 1998) |
@article{Griscelli_1998, title={Angiostatin gene transfer: Inhibition of tumor growth in vivo by blockage of endothelial cell proliferation associated with a mitosis arrest}, volume={95}, ISSN={1091-6490}, url={http://dx.doi.org/10.1073/pnas.95.11.6367}, DOI={10.1073/pnas.95.11.6367}, number={11}, journal={Proceedings of the National Academy of Sciences}, publisher={Proceedings of the National Academy of Sciences}, author={Griscelli, Frank and Li, Hong and Bennaceur-Griscelli, Annelise and Soria, Jeannette and Opolon, Paule and Soria, Claudine and Perricaudet, Michel and Yeh, Patrice and Lu, He}, year={1998}, month=may, pages={6367–6372} }