ArticleThe Journal of biological chemistry2015
Quantifying Ca2+ current and permeability in ATP-gated P2X7 receptors.
Article in The Journal of biological chemistry, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 33 papers, 1 of them a synthesis that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
33 citing papers in PubMed, 1 synthesis or guideline pooled it, 52 citations in OpenAlex.
- Emerging perspectives on mitochondrial dysfunctioning and inflammation in epileptogenesis.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2021Pooled it
- P2X7 receptor-dependent microglia-astrocyte coupling in Alzheimer's disease: from eATP sensing to synaptic and proteostatic failure.Frontiers in aging neuroscience · 2026Review
- Boldo Restores Vascularization and Reduces Skeletal Muscle Inflammation in Symptomatic Mice with Dysferlinopathy.International journal of molecular sciences · 2025Article
- Microglial replacement in a Sandhoff disease mouse model reveals myeloid-derived β-hexosaminidase is necessary for neuronal health.Nature communications · 2025Article
- Synthesis and in vitro evaluation of novel compounds and discovery of a promising iodine-125 radioligand for purinergic P2X7 receptor (P2X7R).Bioorganic & medicinal chemistry · 2025Article
- Ionotropic purinergic receptor 7 (P2X7) channel structure and pharmacology provides insight regarding non-nucleotide agonism.Channels (Austin, Tex.) · 2024Review
- Myeloid-derived β-hexosaminidase is essential for neuronal health and lysosome function: implications for Sandhoff disease.bioRxiv : the preprint server for biology · 2024Article
- P2XScience advances · 2024Article
- Increased Pan-Type, A1-Type, and A2-Type Astrocyte Activation and Upstream Inflammatory Markers Are Induced by the P2X7 Receptor.International journal of molecular sciences · 2024Article
- P2X7 regulates ependymo-radial glial cell proliferation in adult Danio rerio following spinal cord injury.Biology open · 2024Article
- Modulation of Microglial Function by ATP-Gated P2X7 Receptors: Studies in Rat, Mice and Human.Cells · 2024Review
- ATP purinergic receptor signalling promotes Sca-1Cell communication and signaling : CCS · 2023Article
- Emerging roles of the P2X7 receptor in cancer pain.Purinergic signalling · 2023Review
- Skeletal Muscle Atrophy Induced by Diabetes Is Mediated by Non-Selective Channels and Prevented by Boldine.Biomolecules · 2023Article
- The long β2,3-sheets encoded by redundant sequences play an integral role in the channel function of P2X7 receptors.The Journal of biological chemistry · 2022Article
- Using Whole-Cell Electrophysiology and Patch-Clamp Photometry to Characterize P2X7 Receptor Currents.Methods in molecular biology (Clifton, N.J.) · 2022Article
- To inhibit or to boost the ATP/P2RX7 pathway to fight cancer-that is the question.Purinergic signalling · 2021Review
- P2X7 receptor: a critical regulator and potential target for breast cancer.Journal of molecular medicine (Berlin, Germany) · 2021Review
- Article
- Structural and Functional Basis for Understanding the Biological Significance of P2X7 Receptor.International journal of molecular sciences · 2020Review
Corrections and comments
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Authors and funding
9 authors at 4 institutions in 3 countries.
Funding
Abstract
ATP-gated P2X7 receptors are prominently expressed in inflammatory cells and play a key role in the immune response. A major consequence of receptor activation is the regulated influx of Ca(2+) through the self-contained cation non-selective channel. Although the physiological importance of the resulting rise in intracellular Ca(2+) is universally acknowledged, the biophysics of the Ca(2+) flux responsible for the effects are poorly understood, largely because traditional methods of measuring Ca(2+) permeability are difficult to apply to P2X7 receptors. Here we use an alternative approach, called dye-overload patch-clamp photometry, to quantify the agonist-gated Ca(2+) flux of recombinant P2X7 receptors of dog, guinea pig, human, monkey, mouse, rat, and zebrafish. We find that the magnitude of the Ca(2+) component of the ATP-gated current depends on the species of origin, the splice variant, and the concentration of the purinergic agonist. We also measured a significant contribution of Ca(2+) to the agonist-gated current of the native P2X7Rs of mouse and human immune cells. Our results provide cross-species quantitative measures of the Ca(2+) current of the P2X7 receptor for the first time, and suggest that the cytoplasmic N terminus plays a meaningful role in regulating the flow of Ca(2+) through the channel.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.