Type I interferons protect neonates from acute inflammation through interleukin 10–producing B cells
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Newborns and infants are highly susceptible to viral and bacterial infections, but the underlying mechanism remains poorly understood. We show that neonatal B cells effectively control the production of proinflammatory cytokines by both neonatal plasmacytoid and conventional dendritic cells, in an interleukin (IL) 10-dependent manner, after Toll-like receptor (TLR) 9 triggering. This antiinflammatory property of neonatal B cells may extend to other TLR agonists (Pam3CSK4, lipopolysaccharide, and R848) and viruses. In the absence of B cells or of CD5(+) B cell subsets, neonatal mice developed stronger inflammatory responses and became lethally susceptible to CpG challenge after galactosamine sensitization, whereas wild-type (WT) mice were resistant. Paradoxically, interferon (IFN)-alpha/beta enhanced the inflammatory response to CpG challenge in adult mice, whereas they helped to control neonatal acute inflammation by stimulating the secretion of IL-10 by neonatal B cells. Finally, WT neonatal B cells rescued IL-10(-/-) neonates from a lethal CpG challenge, whereas IFN-alpha/beta receptor-deficient B cells did not. Our results show that type I IFNs support a negative regulatory role of neonatal B cells on TLR-mediated inflammation, with important implications for neonatal inflammation and infection.
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B1 B cells are important producers of IL-10 after innate immune activation and are crucial in controlling lethal TLR-mediated inflammation by dampening excessive inflammation in an IL-10-dependent manner.
“In addition, B1 B cells are important producers of IL-10 after innate immune activation and are crucial in controlling lethal Toll-Like Re ceptor (TLR)-mediated inflammation by dampening excessive inflam mation in an IL-10-dependent manner [47,48].”
From Is there a role for B cells in Alzheimer's disease? (2026) · cites this paper as [47]
The Results sections report that neonatal CD5+CD23− B cells produce IL-10 after TLR stimulation and that their IL-10 protects neonatal mice from lethal CpG-induced inflammation. The claim extends this finding to B1 B cells generally, whereas the demonstrated protection is specific to neonatal mice and the CD5+CD23− subset. The supplied passages do not give page numbers. (LLM, conf=0.86)
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Akira, S., & Takeda, K. (2004) · Nature reviews. Immunology · doi:10.1038/nri1391 · Cited by 8,312 · see citing works
Innate antiviral responses by means of TLR7-mediated recognition of single-stranded RNA
Diebold, S. S., Kaisho, T., Hemmi, H., Akira, S., & Reis e Sousa, C. (2004) · Science · doi:10.1126/science.1093616 · Cited by 3,444 · see citing works
Innate immune recognition of viral infection
Kawai, T., & Akira, S. (2006) · Nature Immunology · doi:10.1038/ni1303 · Cited by 1,899 · see citing works
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- Authors
- Zhang, X., Deriaud, E., Jiao, X., Braun, D., Leclerc, C., & Lo-Man, R.
- Affiliations
- Inserm (FR)
- 1Unité Régulation Immunitaire et Vaccinologie
- Yangzhou University (CN)
- 4Immunobiologie des Cellules dendritiques, Institut Pasteur, 75724 Paris, Cedex 15, France
- Venue
- The Journal of Experimental Medicine
- Publisher
- Rockefeller University Press
- Published
- 2007-05-07
- Volume
- 204
- Issue
- 5
- Pages
- 1107-1118
- ISSN
- 0022-1007 (ISSN-L)
- 1540-9538
- PMC
- PMC2118587
- OpenAlex
- W2157480948
- Cited by
- 150
- References
- 3
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- FWCI
- 5.83
- Type
- journal article
- Language
- en
- Open access
- green
- europepmc.org
- Licence
- cc-by-nc-sa
- Locations
- The Journal of Experimental Medicine (publishedVersion)
- Europe PMC (PubMed Central) (publishedVersion, cc-by-nc-sa)
- PubMed Central (publishedVersion, cc-by-nc-sa)
- PubMed (publishedVersion)
- Topics
- Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
- Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
- Life Sciences › Immunology and Microbiology › Immunology › interferon and immune responses
- Keywords
- type I interferon, neonatal B cells, IL-10, acute inflammation, TLR9, plasmacytoid dendritic cells, myeloid dendritic cells, CD5+ B cells, anti-inflammatory regulation, neonatal immunity, viral and bacterial infections
- MeSH terms
- Animals, Animals, Newborn, B-Lymphocytes, Dendritic Cells, Flow Cytometry, Inflammation, Interferon Type I, Mice, Inbred C57BL, Interleukin-10, Mice, Knockout, Adoptive Transfer, Toll-Like Receptor 9, Mice
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