Cited by 155Adenosine and Purinergic SignalingNeuroinflammation and Neurodegeneration MechanismsPain Mechanisms and Treatments

P2X7 receptor activation induces CXCL2 production in microglia through NFAT and PKC/MAPK pathways

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Shiratori, Miho, Tozaki‐Saitoh, Hidetoshi, Yoshitake, Mai, Tsuda, Makoto, Inoue, Kazuhide·2010·Journal of Neurochemistry

Abstract

J. Neurochem.(2010)114, 810–819. Microglia plays an important role in many neurodegenerative conditions. ATP leaked or released by damaged cells triggers microglial activation through P2 receptors, and stimulates the release of oxygen radicals, proinflammatory cytokines and chemokines from activated microglia. However, little is known about mechanisms underlying ATP‐induced chemokine release from microglia. In this study, we found that a high concentration of ATP induces the mRNA expression and release of CXCL2 from microglia. A similar effect was observed following treatment of microglia with a P2X7 receptor (P2X7R) agonist, 2′‐and 3′‐O‐(4‐benzoylbenzoyl) ATP, and this was inhibited by pre‐treatment with a P2X7R antagonist, Brilliant Blue G. ATP induced both activation of nuclear factor of activated T cells (NFAT) and MAPKs (p38, ERK, and JNK) through P2X7R. ATP‐induced mRNA expression of CXCL2 was inhibited by INCA‐6 (an NFAT inhibitor), SB203580 (a p38 inhibitor), U0126 (a MEK‐ERK inhibitor) and JNK inhibitor II (a JNK inhibitor). However, MAPK inhibitors did not inhibit activation of NFAT. In addition, protein kinase C inhibitors suppressed ATP‐induced ERK and JNK activation, and also inhibited ATP‐induced CXCL2 expression in microglia. These results suggest that ATP increased CXCL2 production via both NFAT and protein kinase C/MAPK signaling pathways through P2X7 receptor stimulation in microglia.

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  • P2X7 receptor activation also promotes the release of other inflammatory mediators such as IL-6, TNF-α, CCL2, CCL3, and CXCL2.

    “Moreover, P2X7 receptor activation also promotes the release of other inflammatory mediators such as IL-6, TNF-α, CCL2, CCL3, and CXCL2 [77–80].”

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  1. Ó 2010 The Authors Journal Compilation Ó 2010 International Society for Neurochemistry, J. Neurochem. (2010) 114, 810-819 P2X7 mediated CXCL2 release | 817 14714159, 2010, 3, Downloaded from https://onlinelibrary.wiley.com/doi/10.1111/j.1471-4159.2010.06809.x by Mount Vernon Nazarene University, Wiley Online Library on [17/08/2026]. See the Terms and Conditions (https://onlinelibrary.wiley.com/terms-and-conditions) on Wiley Online Library for rules of use; OA articles are governed by the applicable Creative Commons License · DOI
  2. Ó 2010 The Authors Journal Compilation Ó 2010 International Society for Neurochemistry, J. Neurochem. (2010) 114, 810-819 P2X7 mediated CXCL2 release | 819 14714159, 2010, 3, Downloaded from https://onlinelibrary.wiley.com/doi/10.1111/j.1471-4159.2010.06809.x by Mount Vernon Nazarene University, Wiley Online Library on [17/08/2026]. See the Terms and Conditions (https://onlinelibrary.wiley.com/terms-and-conditions) on Wiley Online Library for rules of use; OA articles are governed by the applicable Creative Commons License · DOI

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Authors
Shiratori, M., Tozaki‐Saitoh, H., Yoshitake, M., Tsuda, M., & Inoue, K.
Affiliations
Kyushu University (JP)
Corresponding author
Inoue, Kazuhide
Venue
Journal of Neurochemistry
Publisher
Wiley
Published
2010-07-06
Volume
114
Issue
3
Pages
810-819
ISSN
  • 0022-3042 (ISSN-L)
  • 1471-4159
OpenAlex
W1575476617
Cited by
153
References
77
Citations by year
2026: 3 · 2025: 9 · 2024: 8 · 2023: 11 · 2022: 11 · 2021: 9 · 2020: 12 · 2019: 7 · 2018: 8 · 2017: 11 · 2016: 13 · 2015: 11 · 2014: 13 · 2013: 6 · 2012: 14
FWCI
5.89
Type
journal article
Language
en
Open access
Locations
  • Journal of Neurochemistry (publishedVersion)
  • PubMed (publishedVersion)
Funders
Ministry of Education, Culture, Sports, Science and Technology
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Physiology › Adenosine and Purinergic Signaling
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Physiology › Pain Mechanisms and Treatments
Keywords
P2X7 receptor, microglia, CXCL2, chemokine secretion, ATP, NFAT, MAPK signaling, protein kinase C, p38 MAPK, ERK, JNK, Brilliant Blue G, neuroinflammation, neurodegeneration
MeSH terms
Adenosine Triphosphate, Animals, Cell Line, Protein Kinase C, Up-Regulation, Microglia, Receptors, Purinergic P2, MAP Kinase Signaling System, NFATC Transcription Factors, Mice, Rats, Chemokine CXCL2, Receptors, Purinergic P2X7, Purinergic P2 Receptor Agonists

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