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Vascular niches: endothelial cells as tissue‐ and site‐specific multifunctional team players in health and disease
Author(s) -
Géraud Cyrill,
Koch PhilippS.,
Goerdt Sergij
Publication year - 2014
Publication title -
jddg: journal der deutschen dermatologischen gesellschaft
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.463
H-Index - 60
eISSN - 1610-0387
pISSN - 1610-0379
DOI - 10.1111/ddg.12402
Subject(s) - paracrine signalling , multicellular organism , biology , angiogenesis , regeneration (biology) , cell type , microbiology and biotechnology , stem cell , endothelial stem cell , blood vessel , immunology , pathology , cell , medicine , cancer research , genetics , endocrinology , receptor , in vitro
Summary The cardiovascular system is a circulatory system that transports the blood and reaches out to almost every site of the body. Endothelial cells (EC) as the innermost cell layer of blood vessels constitute a huge interface between the blood and nearly all other tissues and cells. Although blood vessels and their EC were considered as rather inert and passive conduits early in the history of vascular discoveries, progress in vascular research now suggests that EC are actively involved in a plethora of physiological or pathophysiological processes. Endothelial heterogeneity and the concept of vascular niches are in the spotlight of current research in vascular biology. Endothelial heterogeneity comprises morphologic, molecular and functional features. It allows EC to adapt to the organ‐ and site‐specific requirements exhibited by different segments of the vascular tree. In organ‐specific vascular niches, EC mutually interact with neighboring cells. EC‐derived cytokines, called angiokines, acting in a paracrine (angiocrine) fashion have been shown to be decisively involved in various biological processes ranging from stem cell maintenance to organ regeneration as well as cancer progression and metastasis. In summary, EC should always be considered as teammates in the maintenance and regulation of complex multicellular network interactions in health and disease.

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