Cited by 63Cellular transport and secretionAutophagy in Disease and TherapyPhagocytosis and Immune Regulation

Recruitment of CD63 to Cryptococcus neoformans phagosomes requires acidification

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Artavanis-Tsakonas, Katerina, Love, J. Christopher, Ploegh, Hidde L., Vyas, Jatin M.·2006·Proceedings of the National Academy of Sciences

Abstract

The subcellular localization of the cluster of differentiation 63 (CD63) tetraspanin and its interaction with the class II MHC antigen presentation pathway were examined in the context of phagocytosis by live cell imaging, by using monomeric red fluorescent protein-tagged mouse CD63 expressed in primary bone marrow-derived cell cultures. Upon phagocytosis of Cryptococcus neoformans and polystyrene beads, CD63 was recruited selectively to C. neoformans -containing phagosomes in a MyD88-independent acidification-dependent manner. Bead-containing phagosomes, within a C. neoformans -containing cell, acidified to a lesser extent and failed to recruit CD63 to a level detectable by microscopy. CD63 recruitment to yeast phagosomes occurred independently of class II MHC and LAMP-1. These observations indicate that the composition of distinct phagosomal compartments within the same cell is determined by phagosomal cargo and may affect the outcome of antigen processing and presentation.

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Crossref · 10.1073/pnas.0607528103

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Authors
Artavanis-Tsakonas, K., Love, J. C., Ploegh, H. L., & Vyas, J. M.
Affiliations
  • *Whitehead Institute for Biomedical Research, Cambridge, MA 02142;
  • Whitehead Institute for Biomedical Research (US)
  • Massachusetts General Hospital (US)
Venue
Proceedings of the National Academy of Sciences
Published
2006-10-24
Volume
103
Issue
43
Pages
15945-15950
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2093784138
Cited by
63
References
46
Citations by year
2026: 1 · 2025: 2 · 2024: 1 · 2023: 3 · 2022: 2 · 2020: 4 · 2019: 3 · 2018: 3 · 2017: 1 · 2016: 5 · 2015: 1 · 2014: 4 · 2013: 10 · 2012: 5
FWCI
1.10
Type
journal article
Language
en
Open access
Locations
  • Proceedings of the National Academy of Sciences (publishedVersion)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Ellison Medical Foundation
  • Pfizer
  • Massachusetts General Hospital
  • Gilead Sciences
  • Life Sciences Research Foundation
  • National Institutes of Health (1f32ca105862-01)
  • National Cancer Institute (F32 CA105862, 1F32CA105862-01)
  • National Institute of Allergy and Infectious Diseases (5K08 AI57999, R01AI034893, K08AI057999)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
  • Life Sciences › Immunology and Microbiology › Immunology › Phagocytosis and Immune Regulation
Keywords
CD63, tetraspanins, Cryptococcus neoformans, phagosome, phagosome acidification, phagocytosis, antigen presentation, MHC class II, MyD88, LAMP1, antigen processing, bone marrow-derived cells, live-cell imaging
MeSH terms
Acids, Animals, Histocompatibility Antigens Class II, Antigens, Surface, Cell Line, Cryptococcus neoformans, Humans, Hydrogen-Ion Concentration, Lysosomes, Membrane Glycoproteins, Phagosomes, Platelet Membrane Glycoproteins, Protein Processing, Post-Translational, Recombinant Fusion Proteins, Biomarkers, Antigens, CD, Genes, Reporter, Mice, Tetraspanin 30

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