Cited by 991Immune Response and InflammationPhagocytosis and Immune RegulationCellular transport and secretion

Regulation of Phagosome Maturation by Signals from Toll-Like Receptors

Blander, J. Magarian, Medzhitov, Ruslan·2004·Science

Abstract

In higher metazoans, phagocytosis is essential in host defense against microbial pathogens and in clearance of apoptotic cells. Both microbial and apoptotic cells are delivered on a common route from phagosomes to lysosomes for degradation. Here, we found that activation of the Toll-like receptor (TLR) signaling pathway by bacteria, but not apoptotic cells, regulated phagocytosis at multiple steps including internalization and phagosome maturation. Phagocytosis of bacteria was impaired in the absence of TLR signaling. Two modes of phagosome maturation were observed, constitutive and inducible; their differential engagement depended on the ability of the cargo to trigger TLR signaling.

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Crossref · 10.1126/science.1096158

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  • The discovery of selective activation of Dectin-1/Syk signaling during germination of Aspergillus conidia due to stage-specific surface exposure of β-glucan and the ability of PRR to regulate phagosome maturation provided the conceptual framework of PAMPs masking as a mechanism employed by fungi to escape macrophage killing.

    “The discovery of selective activation of Dectin-1/Syk signaling during germination of Aspergillus conidia due to stage-specific surface exposure of β-glucan (194, 246, 247) and the ability of PRR to regulate phagosome maturation (248) provided the conceptual framework of pathogen-associated molecular patterns (PAMPs) masking as a mechanism employed by fungi to escape macrophage killing.”

    From Aspergillus fumigatus and Aspergillosis in 2019 (2019) · cites this paper as [248]

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Authors
Blander, J. M., & Medzhitov, R.
Affiliations
Howard Hughes Medical Institute (US)
Corresponding author
Medzhitov, Ruslan
Venue
Science
Published
2004-05-14
Volume
304
Issue
5673
Pages
1014-1018
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2098084836
Cited by
991
References
22
Citations by year
2026: 10 · 2025: 16 · 2024: 7 · 2023: 17 · 2022: 20 · 2021: 29 · 2020: 26 · 2019: 38 · 2018: 24 · 2017: 46 · 2016: 39 · 2015: 39 · 2014: 49 · 2013: 42 · 2012: 63
FWCI
28.01
Type
journal article
Language
en
Open access
closed
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Institute of Allergy and Infectious Diseases (AI-46688)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
  • Life Sciences › Immunology and Microbiology › Immunology › Phagocytosis and Immune Regulation
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
Keywords
phagosome maturation, Toll-like receptors, Toll-like receptor signaling, phagocytosis, bacterial internalization, efferocytosis, lysosomal degradation, host defense against infection
MeSH terms
Animals, Antigens, Differentiation, Bacteria, Enzyme Activation, Enzyme Inhibitors, Escherichia coli, Lysosomes, Macrophages, Membrane Glycoproteins, Phagocytosis, Phagosomes, Receptors, Cell Surface, Receptors, Immunologic, Recombinant Proteins, Salmonella typhimurium, Staphylococcus aureus, Signal Transduction, Microscopy, Immunoelectron, Apoptosis, Mitogen-Activated Protein Kinases, p38 Mitogen-Activated Protein Kinases, Adaptor Proteins, Signal Transducing, Toll-Like Receptors, Mice, Myeloid Differentiation Factor 88

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