TGF-β and LPS modulate ADP-induced migration of microglial cells through P2Y1 and P2Y12 receptor expression
Abstract
Nucleotides act as early signals for microglial recruitment to sites of CNS injury. As microglial motility and activation can be influenced by several local factors at the site of the lesion, we investigated the effects of interferon-gamma, lipopolysaccharide (LPS) or transforming growth factor-β (TGF-β) addition to mixed glial cell cultures, on microglial migration in response to ADP, P2Y12 and P2Y1 mRNA expression as well as on the expression of an array of genes associated with the process of microglial activation. First, we demonstrated, by pharmacological inhibition and by using small interfering RNAs, that in addition to P2Y12, P2Y1 is involved in ADP-stimulated microglial migration. The ability of specific agonists to induce Ca(2+) mobilization further confirmed the expression of functional P2Y receptors in microglia. Then, we found that migratory capability and expression of both P2Y receptors were abrogated in microglial cells from LPS-stimulated mixed glial cultures, while TGF-β increased ADP-induced migration and the expression of P2Y12 and P2Y1 receptors. Interferon-gamma did not influence receptor expression or microglial migration. Finally, the patterns of gene expression induced in microglia by LPS or TGF-β treatment of mixed glial cultures were clearly distinct. LPS induced a set of classical pro-inflammatory genes, whereas TGF-β increased the expression of genes associated with atypical microglial phenotype, namely arginase-1 and TGF-β genes. These results imply that both P2Y1 and P2Y12 may guide microglia toward the lesion. They also suggest that the modulation of microglial purinergic receptors expression by local factors, through direct and/or astrocyte-mediated actions, may represent a novel mechanism affecting neuroinflammatory response.
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iMGLs express the microglial-enriched purinergic receptor P2ry12.
“iMGLs express the microglial-enriched purinergic receptor P2ry12, which sense extracellular nucleotides from degenerating neurons, and is critical for microglial homeostatic function (De Simone et al., 2010; Moore et al., 2015) (Figure S2A,B).”
From iPSC-derived human microglia-like cells to study neurological diseases (2017) · cites this paper as De Simone et al., 2010
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- Authors
- De Simone, R., Niturad, C. E., De Nuccio, C., Ajmone‐Cat, M. A., Visentin, S., & Minghetti, L.
- Affiliations
- Istituto Superiore di Sanità (IT)
- Venue
- Journal of Neurochemistry
- Publisher
- Wiley
- Published
- 2010-07-30
- Volume
- 115
- Issue
- 2
- Pages
- 450-459
- ISSN
- 0022-3042 (ISSN-L)
- 1471-4159
- OpenAlex
- W2132141205
- Cited by
- 104
- References
- 43
- Citations by year
- 2026: 4 · 2025: 5 · 2024: 9 · 2023: 7 · 2022: 5 · 2021: 8 · 2020: 9 · 2019: 8 · 2018: 7 · 2017: 4 · 2016: 7 · 2015: 4 · 2014: 10 · 2013: 7 · 2012: 5
- FWCI
- 3.29
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Neurochemistry (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Physiology › Adenosine and Purinergic Signaling
- Health Sciences › Medicine › Physiology › Pain Mechanisms and Treatments
- Keywords
- microglial migration, P2Y1 receptor, P2Y12 receptor, ADP, lipopolysaccharide, TGF-beta, interferon-gamma, purinergic receptors, microglial activation, neuroinflammation, arginase-1, calcium mobilization, mixed glial cultures
- MeSH terms
- Adenosine Diphosphate, Animals, Animals, Newborn, Calcium, Cell Movement, Cells, Cultured, Cerebral Cortex, Gene Expression Regulation, Interferon-gamma, Lipopolysaccharides, Thionucleotides, Transforming Growth Factor beta, Microglia, Receptors, Purinergic P2, RNA, Small Interfering, Rats, Receptors, Purinergic P2Y1, Receptors, Purinergic P2Y12
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