Antiintegrin alpha v beta 3 blocks human breast cancer growth and angiogenesis in human skin
- PMID: 7560073
- PMCID: PMC185818
- DOI: 10.1172/JCI118227
Antiintegrin alpha v beta 3 blocks human breast cancer growth and angiogenesis in human skin
Abstract
Angiogenesis plays a fundamental role in human breast tumor progression. In fact, recent findings indicate that vascular density is a prognostic indicator of breast cancer disease status. Evidence is presented that the integrin alpha v beta 3 is not only a marker of human breast tumor-associated blood vessels, but that it plays a significant role in human angiogenesis and breast tumor growth. To assess the role of alpha v beta 3-dependent angiogenesis in the progression of human breast cancer, we examined a SCID mouse/human chimeric model with transplanted full thickness human skin containing alpha v beta 3-negative human breast tumor cells. This tumor induced a human angiogenic response as measured by vascular cell immunoreactivity with monoclonal antibodies LM609 and P2B1 directed to human alpha v beta 3 and CD31, respectively. Intravenous administration of LM609 either prevented tumor growth or markedly reduced tumor cell proliferation within the microenvironment of the human skin. These LM609-treated tumors not only contained significantly fewer human blood vessels but also appeared considerably less invasive than tumors in control animals. These findings demonstrate that alpha v beta 3 antagonists may provide an effective antiangiogenic approach for the treatment of human breast cancer.
Comment in
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Starve a tumor: therapeutic advice for breast cancer?J Clin Invest. 1995 Oct;96(4):1696-7. doi: 10.1172/JCI118213. J Clin Invest. 1995. PMID: 7560059 Free PMC article. No abstract available.
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