Cited by 123Lymphatic System and DiseasesNeuroinflammation and Neurodegeneration MechanismsAcute Ischemic Stroke Management

Brain-to-cervical lymph node signaling after stroke.

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Abstract

After stroke, peripheral immune cells are activated and these systemic responses may amplify brain damage, but how the injured brain sends out signals to trigger systemic inflammation remains unclear. Here we show that a brain-to-cervical lymph node (CLN) pathway is involved. In rats subjected to focal cerebral ischemia, lymphatic endothelial cells proliferate and macrophages are rapidly activated in CLNs within 24 h, in part via VEGF-C/VEGFR3 signalling. Microarray analyses of isolated lymphatic endothelium from CLNs of ischemic mice confirm the activation of transmembrane tyrosine kinase pathways. Blockade of VEGFR3 reduces lymphatic endothelial activation, decreases pro-inflammatory macrophages, and reduces brain infarction. In vitro, VEGF-C/VEGFR3 signalling in lymphatic endothelial cells enhances inflammatory responses in co-cultured macrophages. Lastly, surgical removal of CLNs in mice significantly reduces infarction after focal cerebral ischemia. These findings suggest that modulating the brain-to-CLN pathway may offer therapeutic opportunities to ameliorate systemic inflammation and brain injury after stroke.

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Crossref · 10.1038/s41467-019-13324-w

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  • Blockage of VEGFR3 in mice following focal cerebral ischemia resulted in reduced inflammatory response and infarct, while VEGFR3 mutant mice subjected to MCAO develop larger stroke volumes and worsened edema.

    “Blockage of VEGFR3 (expressed by lymphatic endothelial cells) in mice following focal cerebral ischemia resulted in reduced inflammatory response and infarct”

    From Living on the Edge of the CNS: Meninges Cell Diversity in Health and Disease (2021) · cites this paper as Esposito et al., 2019

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Authors
Esposito, E., Ahn, B. J., Shi, J., Nakamura, Y., Park, J. H., Mandeville, E. T., Yu, Z., Chan, S. J., Desai, R., Hayakawa, A., Ji, X., Lo, E. H., & Hayakawa, K.
Affiliations
  • Harvard University (US)
  • Capital Medical University (CN)
Corresponding author
  • Lo, Eng H.
  • Hayakawa, Kazuhide
Venue
Nature Communications
Published
2019-11-22
Volume
10
Issue
1
Pages
5306-5306
ISSN
2041-1723 (ISSN-L)
OpenAlex
W2990744279
Cited by
123
References
70
Citations by year
2026: 13 · 2025: 20 · 2024: 18 · 2023: 16 · 2022: 27 · 2021: 24 · 2020: 5
FWCI
5.85
Type
journal article
Language
en
Open access
Locations
  • Nature Communications (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • National University of Singapore (submittedVersion, cc-by)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
U.S. Department of Health & Human Services | NIH | National Institute of Neurological Disorders and Stroke
Topics
  • Health Sciences › Medicine › Oncology › Lymphatic System and Diseases
  • Life Sciences › Neuroscience › Neurology › Neuroinflammation and Neurodegeneration Mechanisms
  • Health Sciences › Medicine › Epidemiology › Acute Ischemic Stroke Management
Keywords
stroke, cervical lymph nodes, focal cerebral ischemia, systemic inflammation, lymphatic endothelial cells, macrophage activation, infarct size, lymphatic drainage
MeSH terms
Animals, Brain, Brain Ischemia, Endothelium, Lymphatic, Inflammation, Lymph Nodes, Macrophages, Neck, Brain Infarction, Stroke, Vascular Endothelial Growth Factor Receptor-3, Vascular Endothelial Growth Factor C, Lymphangiogenesis, Endothelial Cells, Cell Proliferation, Mice, Rats

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