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Cellular and Molecular Biology of Cancer Cell Extravasation
Book chapter

Cellular and Molecular Biology of Cancer Cell Extravasation

J. Matthew Barnes and Michael D. Henry
Signaling Pathways and Molecular Mediators in Metastasis, pp.197-219
Springer Netherlands
10/18/2011
DOI: 10.1007/978-94-007-2558-4_8

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Abstract

Hematogenous metastasis involves the entry of cancer cells into the circulation at a primary tumor site and the extravasation of those cells at a secondary organ which may ultimately support the growth of a metastatic tumor. Although extravasation is likely an obligate step in metastasis, it is relatively poorly understood in part due the difficulty studying this process in appropriate experimental models in vivo. Thus, there remain open questions about how cancer cells interact with the vascular wall during this process including the extent to which non-selective mechanisms such as size restriction versus specific adhesive interactions determine the behavior of extravasating cancer cells; how cancer cells cross the endothelium; and the degree to which extravasation limits the overall efficiency of metastasis. The answers to these questions are influenced by specific properties of both the cancer cells and the nature of the vascular bed involved. In this Chapter, we review our current understanding of the cellular and molecular biology of cancer cell extravasation and discuss how this knowledge impacts clinical issues related to the biology of circulating tumor cells and cancer therapy.
Circulate Tumor Cell Leukocyte Extravasation Melanoma Cell Metastatic Colonization Tumor Cell Adhesion

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