Adenosine signaling during acute and chronic disease states
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TLDR
Key observations are discussed that define the beneficial and detrimental aspects of adenosine signaling during acute and chronic disease states with an emphasis on cellular processes, such as inflammatory cell regulation, vascular barrier function, and tissue fibrosis.Abstract:
Adenosine is a signaling nucleoside that is produced following tissue injury, particularly injury involving ischemia and hypoxia. The production of extracellular adenosine and its subsequent signaling through adenosine receptors plays an important role in orchestrating injury responses in multiple organs. There are four adenosine receptors that are widely distributed on immune, epithelial, endothelial, neuronal,and stromal cells throughout the body. Interestingly, these receptors are subject to altered regulation following injury. Studies in mouse models and human cells and tissues have identified that the production of adenosine and its subsequent signaling through its receptors plays largely beneficial roles in acute disease states, with the exception of brain injury. In contrast, if elevated adenosine levels are sustained beyond the acute injury phase, adenosine responses can become detrimental by activating pathways that promote tissue injury and fibrosis. Understanding when during the course of disease adenosine signaling is beneficial as opposed to detrimental and defining the mechanisms involved will be critical for the advancement of adenosine-based therapies for acute and chronic diseases. The purpose of this review is to discuss key observations that define the beneficial and detrimental aspects of adenosine signaling during acute and chronic disease states with an emphasis on cellular processes, such as inflammatory cell regulation, vascular barrier function, and tissue fibrosis.read more
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Mutant Adenosine Deaminase 2 in a Polyarteritis Nodosa Vasculopathy
Paulina Navon Elkan,Sarah B. Pierce,Reeval Segel,Reeval Segel,Tom Walsh,Judith Barash,Shai Padeh,Abraham Zlotogorski,Yackov Berkun,Joseph J. Press,Mukamel M,Isabel Voth,Philip J. Hashkes,Liora Harel,Vered Hoffer,Eduard Ling,Fatoş Yalçınkaya,Ozgur Kasapcopur,Ming K. Lee,Rachel E. Klevit,Paul Renbaum,Ariella Weinberg-Shukron,Ariella Weinberg-Shukron,Elif Funda Sener,Elif Funda Sener,Barbara Schormair,Sharon Zeligson,Dina Marek-Yagel,Tim M. Strom,Mordechai Shohat,Mordechai Shohat,Amihood Singer,Alan Rubinow,Elon Pras,Juliane Winkelmann,Juliane Winkelmann,Mustafa Tekin,Yair Anikster,Mary Claire King,Ephrat Levy-Lahad,Ephrat Levy-Lahad +40 more
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The NLRP3 inflammasome is activated by nanoparticles through ATP, ADP and adenosine
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TL;DR: It is shown for the first time that extracellularAdenosine activates the NLRP3 inflammasome by two ways: by interacting with adenosine receptors at nanomolar/micromolar concentrations and through cellular uptake by equilibrative nucleoside transporters at millimolar concentrations.
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Itsaso Montalbán del Barrio,Cornelia Penski,Cornelia Penski,Laura Schlahsa,Roland Stein,J Diessner,Achim Wöckel,Johannes Dietl,Manfred B. Lutz,Michel Mittelbronn,Michel Mittelbronn,Jörg Wischhusen,Sebastian Häusler +12 more
TL;DR: Adenosine generated by OvCA cells likely contributes to the recruitment of TAMs which further amplify adenosine-dependent immunosuppression via additional ectonucleotidase activity, which could improve immune responses in ovarian cancer.
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