This Article Full Text Full Text (PDF) All Versions of this Article: 1541-7786.MCR-06-0290v1 1541-7786.MCR-06-0290v2 5/8/773    most recent Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Mistry, S. J. Articles by Atweh, G. F. Search for Related Content PubMed PubMed Citation Articles by Mistry, S. J. Articles by Atweh, G. F.

---

Angiogenesis, Metastasis, and the Cellular Microenvironment

Synergistic Antiangiogenic Effects of Stathmin Inhibition and Taxol Exposure

Division of Hematology-Oncology, Department of Medicine, Mount Sinai School of Medicine, New York, New York

Requests for reprints: Sucharita J. Mistry, Division of Hematology-Oncology, Box 1079, Mount Sinai School of Medicine, One Gustave L. Levy Place, New York, NY 10029. Phone: 212-241-5281; E-mail: sucharita.mistry{at}mssm.edu and George F. Atweh, Division of Hematology-Oncology, Box 1079, Mount Sinai School of Medicine, One Gustave L. Levy Place, New York, NY 10029. Phone: 212-241-5293; E-mail: george.atweh{at}mssm.edu

Stathmin is one of the key regulators of the microtubule cytoskeleton and the mitotic spindle in eukaryotic cells. It is expressed at high levels in a wide variety of human cancers and may provide an attractive target for cancer therapy. We had previously shown that stathmin inhibition results in the abrogation of the malignant phenotype. The microtubule-interfering drug, taxol, has both antitumorigenic and antiangiogenic properties. We had also shown that the antitumor activities of taxol and stathmin inhibition are synergistic. We hypothesized that taxol and stathmin inhibition may also have synergistic antiangiogenic activities. A replication-deficient bicistronic adenoviral vector that coexpresses green fluorescent protein and an anti-stathmin ribozyme was used to target stathmin mRNA. Exposure of endothelial cells to anti-stathmin adenovirus alone resulted in a dose-dependent inhibition of proliferation, migration, and differentiation into capillary-like structures. This inhibition was markedly enhanced by exposure of transduced endothelial cells to very low concentrations of taxol, which resulted in a virtually complete loss of proliferation, migration, and differentiation of endothelial cells. In contrast, exposure of nontransduced endothelial cells to taxol alone resulted in a modest inhibition of proliferation, migration, and differentiation. Our detailed analysis showed that the antiangiogenic effects of the combination of stathmin inhibition and taxol exposure are synergistic. Our studies also showed that the mechanism of this synergistic interaction is likely to be mediated through the stabilization of microtubules. Thus, this novel combination may provide an attractive therapeutic strategy that combines a synergistic antitumor activity with a synergistic antiangiogenic activity. (Mol Cancer Res 2007;5(8):773–82)

This article has been cited by other articles:

				M. Yoshie, H. Kashima, T. Bessho, M. Takeichi, K. Isaka, and K. Tamura Expression of stathmin, a microtubule regulatory protein, is associated with the migration and differentiation of cultured early trophoblasts Hum. Reprod., December 1, 2008; 23(12): 2766 - 2774. [Abstract] [Full Text] [PDF]

				M. Schiappacassi, F. Lovat, V. Canzonieri, B. Belletti, S. Berton, D. Di Stefano, A. Vecchione, A. Colombatti, and G. Baldassarre p27Kip1 expression inhibits glioblastoma growth, invasion, and tumor-induced neoangiogenesis Mol. Cancer Ther., May 1, 2008; 7(5): 1164 - 1175. [Abstract] [Full Text] [PDF]