Identification of Pannexins in Rat Nasal Mucosa
Pannexins are a second family of gap-junction proteins in vertebrates, classified as pannexin-1, pannexin-2, and pannexin-3. Pannexin-1 is one of the candidates for channel-mediated ATP release into the extracellular space.
Toyoaki Ohbuchi M.D. +7 more
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Perspectives on the role of Pannexin 1 in neural precursor cell biology
We recently reported that targeted deletion of Pannexin 1 in neural precursor cells of the ventricular zone impairs the maintenance of these cells in healthy and stroke-injured brain. Here we frame this exciting new finding in the context of our previous
Juan C Sanchez-Arias +2 more
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Single-cell dynamics of pannexin-1-facilitated programmed ATP loss during apoptosis
ATP is essential for all living cells. However, how dead cells lose ATP has not been well investigated. In this study, we developed new FRET biosensors for dual imaging of intracellular ATP level and caspase-3 activity in single apoptotic cultured human ...
Hiromi Imamura +8 more
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Chemotherapeutic Drugs Induce ATP Release via Caspase-gated Pannexin-1 Channels and a Caspase/Pannexin-1-independent Mechanism [PDF]
Anti-tumor immune responses have been linked to the regulated release of ATP from apoptotic cancer cells to engage P2 purinergic receptor signaling cascades in nearby leukocytes. We used the Jurkat T cell acute lymphocytic leukemia model to characterize the role of pannexin-1 (Panx1) channels in the release of nucleotides during chemotherapeutic drug ...
Andrea, Boyd-Tressler +3 more
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Distinct Molecular Mechanisms Underlying Potassium Efflux for NLRP3 Inflammasome Activation
The NLRP3 inflammasome is a core component of innate immunity, and dysregulation of NLRP3 inflammasome involves developing autoimmune, metabolic, and neurodegenerative diseases.
Ziwei Xu +5 more
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Extracellular ATP hydrolysis inhibits synaptic transmission by increasing ph buffering in the synaptic cleft. [PDF]
Neuronal computations strongly depend on inhibitory interactions. One such example occurs at the first retinal synapse, where horizontal cells inhibit photoreceptors.
Rozan Vroman +6 more
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Pannexin 1: The Molecular Substrate of Astrocyte “Hemichannels” [PDF]
Purinergic signaling plays distinct and important roles in the CNS, including the transmission of calcium signals between astrocytes. Gap junction hemichannels are among the mechanisms proposed by which astrocytes might release ATP; however, whether the gap junction protein connexin43 (Cx43) forms these “hemichannels” remains controversial. Recently, a
Rodolfo, Iglesias +4 more
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Taking a close look at a large-pore channel
The structure of pannexin 1, a channel protein with a large pore, has been determined for the first time.
Pablo S Gaete, Jorge E Contreras
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Neurodegeneration in Multiple Sclerosis: The Role of Nrf2-Dependent Pathways
Multiple sclerosis (MS) encompasses a chronic, irreversible, and predominantly immune-mediated disease of the central nervous system that leads to axonal degeneration, neuronal death, and several neurological symptoms.
Paloma P. Maldonado +5 more
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Pannexin 1 and Adipose Tissue [PDF]
Defective glucose uptake in adipocytes leads to impaired metabolic homeostasis and insulin resistance, hallmarks of type 2 diabetes. Extracellular ATP-derived nucleotides and nucleosides are important regulators of adipocyte function, but the pathway for controlled ATP release from adipocytes is unknown. Here, we investigated whether Pannexin 1 (Panx1)
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