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The Eph/ephrin system plays a vital role in diverse physiological events such as neurogenesis, vasculogenesis, and cell adhesion. Expression analysis of mRNA and protein in clinical samples revealed the involvement of the Eph/ephrin system in tumorigenesis, Alzheimer's disease, and atherosclerosis. Therefore, the Eph/ephrin system is considered a promising therapeutic target. However, no molecularly targeted drug against Ephs and ephrins is being used in the clinic thus far.Tumors are composed of various types of cells, including fibroblasts, immune cells, and endothelial cells. Recent studies showed the contribution of these cells to tumor growth, tumor progression, drug resistance, and metastasis. In this chapter, we discuss the role of Eph/ephrin system in the tumor microenvironment and describe its functions in tumor initiation, angiogenesis, cancer stem cell, tumor immunity, and also the metastatic environment.


Katsuaki Ieguchi, Yoshiro Maru. Eph/Ephrin Signaling in the Tumor Microenvironment. Advances in experimental medicine and biology. 2021;1270:45-56

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PMID: 33123992

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