Contortrostatin, a dimeric disintegrin from Agkistrodon contortrix contortrix, inhibits breast cancer progression
Breast Cancer Research and Treatment, ISSN: 0167-6806, Vol: 61, Issue: 3, Page: 249-259
2000
- 95Citations
- 62Captures
Metric Options: CountsSelecting the 1-year or 3-year option will change the metrics count to percentiles, illustrating how an article or review compares to other articles or reviews within the selected time period in the same journal. Selecting the 1-year option compares the metrics against other articles/reviews that were also published in the same calendar year. Selecting the 3-year option compares the metrics against other articles/reviews that were also published in the same calendar year plus the two years prior.
Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
Citation Benchmarking is provided by Scopus and SciVal and is different from the metrics context provided by PlumX Metrics.
Metrics Details
- Citations95
- Citation Indexes95
- 95
- CrossRef64
- Captures62
- Readers62
- 62
Article Description
We report the results of a multidisciplinary study on the inhibitory effect of a snake venom disintegrin, contortrostatin, a 13.5 kDa homodimeric protein isolated from Agkistrodon contortrix contortrix (southern copperhead) venom, on breast cancer progression. We demonstrate that contortrostatin binds to integrins and blocks the adhesion of human breast cancer cells (MDA-MB-435) to extracellular matrix (ECM) proteins including fibronectin and vitronectin, but it has no effect on adhesion of the cells to laminin and Matrigel. Contortrostatin also prevents invasion of MDA-MB-435 cells through an artificial Matrigel basement membrane. Daily local injection of contortrostatin (5 μg per mouse per day) into MDA-MB-435 tumor masses in an orthotopic xenograft nude mouse model inhibits growth of the tumor by 74% (p = 0.0164). More importantly, it reduces the number of pulmonary macro-metastasis of the breast cancer by 68% (p < 0.001), and micro-metastasis by 62.4% (p < 0.001). Contortrostatin is not cytotoxic to cancer cells, and does not inhibit proliferation of the breast cancer cells in vitro. However, contortrostatin inhibits angiogenesis induced by the breast cancer, as shown by immunohistochemical quantitation of the vascular endothelial cells in tumor tissue removed from the nude mice. We have identified αvβ3, an important integrin mediating cell motility and tumor invasion, as one of the binding sites of contortrostatin on MDA-MB-435 cells. We conclude that contortrostatin blocks αvβ3, and perhaps other integrins, and thus inhibits in vivo progression.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0033860870&origin=inward; http://dx.doi.org/10.1023/a:1006457903545; http://www.ncbi.nlm.nih.gov/pubmed/10966001; http://link.springer.com/10.1023/A:1006457903545; http://www.springerlink.com/index/pdf/10.1023/A:1006457903545; http://www.springerlink.com/index/10.1023/A:1006457903545; http://dx.doi.org/10.1023/a%3A1006457903545; https://dx.doi.org/10.1023/a%3A1006457903545; https://link.springer.com/article/10.1023%2FA%3A1006457903545
Springer Nature
Provide Feedback
Have ideas for a new metric? Would you like to see something else here?Let us know