Cited by 340Immunotherapy and Immune ResponsesImmune Response and InflammationT-cell and B-cell Immunology

The DOI matches its Crossref record; 48 of the 48 references it cites were found in a registry or an index.

Polysaccharide Processing and Presentation by the MHCII Pathway

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Abstract

The adaptive immune system functions through the combined action of antigen-presenting cells (APCs) and T cells. Specifically, class I major histocompatibility complex antigen presentation to CD8(+) T cells is limited to proteosome-generated peptides from intracellular pathogens while the class II (MHCII) endocytic pathway presents only proteolytic peptides from extracellular pathogens to CD4(+) T cells. Carbohydrates have been thought to stimulate immune responses independently of T cells; however, zwitterionic polysaccharides (ZPSs) from the capsules of some bacteria can activate CD4(+) T cells. Here we show that ZPSs are processed to low molecular weight carbohydrates by a nitric oxide-mediated mechanism and presented to T cells through the MHCII endocytic pathway. Furthermore, these carbohydrates bind to MHCII inside APCs for presentation to T cells. Our observations begin to elucidate the mechanisms by which some carbohydrates induce important immunologic responses through T cell activation, suggesting a fundamental shift in the MHCII presentation paradigm.

Overview

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Crossref · 10.1016/j.cell.2004.05.001

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48 of 48 references verified0 citation errors · 0 not checkable

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Metadata

Authors
Cobb, B. A., Wang, Q., Tzianabos, A. O., & Kasper, D. L.
Affiliations
Brigham and Women's Hospital (US)
Corresponding author
Kasper, Dennis L
Venue
Cell
Publisher
Elsevier BV
Published
2004-05
Volume
117
Issue
5
Pages
677-687
ISSN
0092-8674 (ISSN-L)
OpenAlex
W1988183869
Cited by
340
References
48
Citations by year
2026: 9 · 2025: 9 · 2024: 6 · 2023: 11 · 2022: 13 · 2021: 23 · 2020: 19 · 2019: 15 · 2018: 10 · 2017: 12 · 2016: 19 · 2015: 13 · 2014: 18 · 2013: 19 · 2012: 20
FWCI
5.66
Type
journal article
Language
en
Open access
Locations
  • Cell (publishedVersion)
  • PubMed (publishedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of Allergy and Infectious Diseases (AI007061, AI52397, AI039576, R01AI039576, R01AI052397, T32AI007061)
Topics
  • Life Sciences › Immunology and Microbiology › Immunology › Immunotherapy and Immune Responses
  • Life Sciences › Immunology and Microbiology › Immunology › Immune Response and Inflammation
  • Life Sciences › Immunology and Microbiology › Immunology › T-cell and B-cell Immunology
Keywords
zwitterionic polysaccharides, MHC class II antigen presentation, nitric oxide, T cell activation, antigen-presenting cells, bacterial capsule, CD4+ T cells, endocytic pathway
MeSH terms
Animals, Antigen-Presenting Cells, Histocompatibility Antigens Class II, Endocytosis, Polysaccharides, Receptors, Antigen, T-Cell, T-Lymphocytes, Antigen Presentation, Mice

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