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KMID : 1102220240430010047
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Kidney Research and Clinical Practice
2024 Volume.43 No. 1 p.47 ~ p.62
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Crosstalk mechanisms between glomerular endothelial cells and podocytes in renal diseases and kidney transplantation
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Min Li
Silvia Armelloni
Deborah Mattinzoli
Masami Ikehata
Christos Chatziantoniou
Carlo Alfieri
Paolo Molinari
Christos E. Chadjichristos
Silvia Malvica
Giuseppe Castellano
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Abstract
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The glomerular filtration barrier (GFB), composed of endothelial cells, glomerular basement membrane, and podocytes, is a unique structure for filtering blood while detaining plasma proteins according to size and charge selectivity. Structurally, the fenestrated endothelial cells, which align the capillary loops, are in close proximity to mesangial cells. Podocytes are connected by specialized intercellular junctions known as slit diaphragms and are separated from the endothelial compartment by the glomerular basement membrane. Podocyte-endothelial cell communication or crosstalk is required for the development and maintenance of an efficient filtration process in physiological conditions. In pathological situations, communication also has an essential role in promoting or delaying disease progression. Podocytes and endothelial cells can secrete signaling molecules, which act as crosstalk effectors and, through binding to their target receptors, can trigger bidirectional paracrine or autocrine signal transduction. Moreover, the emerging evidence of extracellular vesicles derived from various cell types engaging in cell communication has also been reported. In this review, we summarize the principal pathways involved in the development and maintenance of the GFB and the progression of kidney disease, particularly in kidney transplantation.
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KEYWORD
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Extracellular vesicles, Glomerular filtration barrier, Kidney transplantation, MicroRNAs, Podocyte-endothelial cell crosstalk
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