Cited by 403Antimicrobial Peptides and ActivitiesImmune Response and InflammationSepsis Diagnosis and Treatment

An anti-infective peptide that selectively modulates the innate immune response

Scott, Monisha G, Dullaghan, Edie, Mookherjee, Neeloffer, Glavas, Natalie, Waldbrook, Matthew, Thompson, Annick, Wang, Aikun, Lee, Ken +9 more·2007·Nature Biotechnology

Abstract

We show that an innate defense-regulator peptide (IDR-1) was protective in mouse models of infection with important Gram-positive and Gram-negative pathogens, including methicillin-resistant Staphylococcus aureus, vancomycin-resistant Enterococcus and Salmonella enterica serovar Typhimurium. When given from 48 h before to 6 h after infection, the peptide was effective by both local and systemic administration. Because protection by IDR-1 was prevented by in vivo depletion of monocytes and macrophages, but not neutrophils or B- and T-lymphocytes, we conclude that monocytes and macrophages are key effector cells. IDR-1 was not directly antimicrobial: gene and protein expression analysis in human and mouse monocytes and macrophages indicated that IDR-1, acting through mitogen-activated protein kinase and other signaling pathways, enhanced the levels of monocyte chemokines while reducing pro-inflammatory cytokine responses. To our knowledge, an innate defense regulator that counters infection by selective modulation of innate immunity without obvious toxicities has not been reported previously.

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Crossref · 10.1038/nbt1288

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  • The reaction of neutrophils and macrophages during infection triggers the production of innate defence regulatory peptide 1 (IDR1), with similar activity to defensins or cathelicidins.

    “The reaction of neutrophils and macrophages during infection triggers the production of innate defence regulatory peptide 1 IDR1, with similar activity to defensins or cathelicidins [223].”

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Authors
Scott, M. G., Dullaghan, E., Mookherjee, N., Glavas, N., Waldbrook, M., Thompson, A., Wang, A., Lee, K., Doria, S., Hamill, P., Yu, J. J., Li, Y., Donini, O., Guarna, M. M., Finlay, B. B., North, J. R., & Hancock, R. E. W.
Affiliations
  • City of Vancouver (CA)
  • University of British Columbia (CA)
Corresponding author
Hancock, Robert E W
Venue
Nature Biotechnology
Published
2007-03-25
Volume
25
Issue
4
Pages
465-472
ISSN
  • 0733-222X (ISSN-L)
  • 1087-0156
  • 1546-1696
OpenAlex
W2040733257
Cited by
403
References
31
Citations by year
2026: 16 · 2025: 12 · 2024: 19 · 2023: 15 · 2022: 14 · 2021: 20 · 2020: 16 · 2019: 15 · 2018: 22 · 2017: 16 · 2016: 25 · 2015: 28 · 2014: 14 · 2013: 30 · 2012: 29
FWCI
25.65
Type
journal article
Language
en
Open access
closed
Locations
  • Nature Biotechnology (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Immunology and Microbiology › Microbiology › Antimicrobial Peptides and Activities
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
  • Health Sciences › Medicine › Epidemiology › Sepsis Diagnosis and Treatment
Keywords
monocytes, macrophages, methicillin-resistant Staphylococcus aureus, vancomycin-resistant enterococci, Salmonella typhimurium, Gram-positive pathogens, Gram-negative pathogens, inflammatory cytokines, MAPK signaling
MeSH terms
Animals, Anti-Infective Agents, Bacterial Infections, Disease Models, Animal, Gene Expression Regulation, Humans, Immunity, Innate, Inflammation, Lipopolysaccharides, Peptides, Treatment Outcome, Models, Immunological, Mice

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