ArticleFrontiers in immunology2024
The purinergic receptor P2X7 as a modulator of viral vector-mediated antigen cross-presentation.
Article in Frontiers in immunology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- P2X7 receptor: a potential therapeutic target for chronic respiratory diseases.Molecular and cellular biochemistry · 2026Review
- P2X7 a new therapeutic target to block vesicle-dependent metastasis in colon carcinoma: Role of the A2A/CD39/CD73 axis.Cell death & disease · 2025Article
- Platelets and Their Role in Immunity: Formation, Activation and Activity, and Biologically Active Substances in Their Granules and Extracellular Vesicles.International journal of inflammation · 2025Review
- Purinergic Receptors in Dendritic Cells.Journal of inflammation research · 2025Review
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Authors and funding
14 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Introduction: Modified Vaccinia Virus Ankara (MVA) is a safe vaccine vector inducing long- lasting and potent immune responses. MVA-mediated CD8 Methods: To improve the adaptive immune responses, we investigated the role of the purinergic receptor P2X7 (P2RX7) in MVA-infected feeder cells as a modulator of cross-presentation by non-infected dendritic cells. The infected feeder cells serve as source of antigen and provide signals that help to attract dendritic cells for antigen take up and to license these cells for cross-presentation. Results: We demonstrate that presence of an active P2RX7 in major histocompatibility complex (MHC) class I (MHCI) mismatched feeder cells significantly enhanced MVA-mediated antigen cross-presentation. This was partly regulated by P2RX7-specific processes, such as the increased availability of extracellular particles as well as the altered cellular energy metabolism by mitochondria in the feeder cells. Furthermore, functional P2RX7 in feeder cells resulted in a delayed but also prolonged antigen expression after infection. Discussion: We conclude that a combination of the above mentioned P2RX7-depending processes leads to significantly increased T cell activation via cross- presentation of MVA-derived antigens. To this day, P2RX7 has been mostly investigated in regards to neuroinflammatory diseases and cancer progression. However, we report for the first time the crucial role of P2RX7 for antigen- specific T cell immunity in a viral infection model.
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