Davide Vigetti1, Eugenia Karousou1, Manuela Viola1, Sara Deleonibus1, Giancarlo De Luca1, Alberto Passi2. 1. Dipartimento di Scienze Chirurgiche e Morfologiche, Università degli Studi dell'Insubria, Via J.H. Dunant 5, 21100 Varese, Italy. 2. Dipartimento di Scienze Chirurgiche e Morfologiche, Università degli Studi dell'Insubria, Via J.H. Dunant 5, 21100 Varese, Italy. Electronic address: alberto.passi@uninsubria.it.
Abstract
BACKGROUND: Hyaluronan is a critical component of extracellular matrix with several different roles. Besides the contribution to the tissue hydration, mechanical properties and correct architecture, hyaluronan plays important biological functions interacting with different molecules and receptors. SCOPE OF REVIEW: The review addresses the control of hyaluronan synthesis highlighting the critical role of hyaluronan synthase 2 in this context as well as discussing the recent findings related to covalent modifications which influence the enzyme activity. Moreover, the interactions with specific receptors and hyaluronan are described focusing on the importance of polymer size in the modulation of hyaluronan signaling. MAJOR CONCLUSIONS: Due to its biological effects on cells recently described, it is evident how hyaluronan is to be considered not only a passive component of extracellular matrix but also an actor involved in several scenarios of cell behavior. GENERAL SIGNIFICANCE: The effects of metabolism on the control of hyaluronan synthesis both in healthy and pathologic conditions are critical and still not completely understood. The hyaluronan capacity to bind several receptors triggering specific pathways may represent a valid target for new approach in several therapeutic strategies. This article is part of a Special Issue entitled Matrix-mediated cell behaviour and properties.
BACKGROUND:Hyaluronan is a critical component of extracellular matrix with several different roles. Besides the contribution to the tissue hydration, mechanical properties and correct architecture, hyaluronan plays important biological functions interacting with different molecules and receptors. SCOPE OF REVIEW: The review addresses the control of hyaluronan synthesis highlighting the critical role of hyaluronan synthase 2 in this context as well as discussing the recent findings related to covalent modifications which influence the enzyme activity. Moreover, the interactions with specific receptors and hyaluronan are described focusing on the importance of polymer size in the modulation of hyaluronan signaling. MAJOR CONCLUSIONS: Due to its biological effects on cells recently described, it is evident how hyaluronan is to be considered not only a passive component of extracellular matrix but also an actor involved in several scenarios of cell behavior. GENERAL SIGNIFICANCE: The effects of metabolism on the control of hyaluronan synthesis both in healthy and pathologic conditions are critical and still not completely understood. The hyaluronan capacity to bind several receptors triggering specific pathways may represent a valid target for new approach in several therapeutic strategies. This article is part of a Special Issue entitled Matrix-mediated cell behaviour and properties.
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