Cited by 284Cellular transport and secretionPhagocytosis and Immune RegulationAutophagy in Disease and Therapy

A pathway for phagosome maturation during engulfment of apoptotic cells

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Kinchen, Jason M., Doukoumetzidis, Kimon, Almendinger, Johann, Stergiou, Lilli, Tosello-Trampont, Annie, Sifri, Costi D., Hengartner, Michael O., Ravichandran, Kodi S.·2008·Nature Cell Biology

Abstract

Removal of apoptotic cells is critical for the physiological well-being of the organism and defects in corpse removal have been linked to disease states. Genes regulating corpse recognition and internalization have been identified, but few molecules involved in the processing of internalized corpses are known. Through a combination of targeted and unbiased reverse genetic screens in Caenorhabditis elegans, and studies in mammalian cells, we have identified genes required for maturation of apoptotic-cell-containing phagosomes. We have further ordered these candidates, which include the GTPases RAB-5 and RAB-7 and the HOPS complex, into a coherent linear pathway for the maturation of apoptotic cells within phagosomes. In depth analysis of two additional candidate genes, the phosphatidylinositol 3 kinase (PI(3)K) vps-34 (A001762) and dyn-1/dynamin, showed an accumulation of internalized, but undegraded, corpses within abnormal Rab5-negative phagosomes. We ordered these candidates in our pathway, with DYN-1 functioning upstream of VPS-34 in the recruitment and/or retention of RAB-5 to the phagosome. Finally, we have also identified a previously undescribed biochemical complex containing Vps34, dynamin and Rab5(GDP), thus providing a mechanism for Rab5 recruitment to the nascent phagosome.

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  • Efferosomes containing apoptotic material follow a similar succession as phagosomes, going from early to late endosomal to phagolysosomal stages, as indicated by differential association with marker proteins such as Rab5, Rab7, Vsp34, dynamin, Lamp-1, and finally lysosomal hydrolases.

    “Efferosomes containing apoptotic material follow a similar succession as phagosomes going from an early to late endosomal to phagolysosomal stages as indicated by differential association with marker proteins such as the small GTPases Rab5 and Rab7, Vsp34 and dynamin, Lamp-1, and finally lysosomal hydrolases (136) (Fig. 1).”

    From Macrophage defense mechanisms against intracellular bacteria (2015) · cites this paper as [136]

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Authors
Kinchen, J. M., Doukoumetzidis, K., Almendinger, J., Stergiou, L., Tosello-Trampont, A., Sifri, C. D., Hengartner, M. O., & Ravichandran, K. S.
Affiliations
  • University of Virginia (US)
  • University of Zurich (CH)
Corresponding author
  • Hengartner, Michael O.
  • Ravichandran, Kodi S.
Venue
Nature Cell Biology
Published
2008-04-20
Volume
10
Issue
5
Pages
556-566
ISSN
  • 1465-7392 (ISSN-L)
  • 1476-4679
OpenAlex
W2136243038
Cited by
284
References
89
Citations by year
2026: 5 · 2025: 14 · 2024: 10 · 2023: 18 · 2022: 16 · 2021: 15 · 2020: 8 · 2019: 6 · 2018: 17 · 2017: 15 · 2016: 24 · 2015: 15 · 2014: 19 · 2013: 21 · 2012: 21
FWCI
8.61
Type
journal article
Language
en
Open access
Locations
  • Nature Cell Biology (publishedVersion)
  • PubMed (publishedVersion)
  • Zurich Open Repository and Archive (University of Zurich) (acceptedVersion)
  • PubMed Central (acceptedVersion)
  • Zurich Open Repository and Archive (University of Zurich) (submittedVersion)
  • Zurich Open Repository and Archive (University of Zurich)
Funders
National Institute of General Medical Sciences (R01GM069998, R01GM064709)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
  • Life Sciences › Immunology and Microbiology › Immunology › Phagocytosis and Immune Regulation
  • Health Sciences › Medicine › Epidemiology › Autophagy in Disease and Therapy
Keywords
phagosome maturation, efferocytosis, corpse removal, Rab5, Rab7, HOPS complex, dynamin, phosphatidylinositol 3-kinase, Caenorhabditis elegans, phagocytosis, reverse genetic screen
MeSH terms
rab7 GTP-Binding Proteins, Animals, Humans, Phagocytosis, Phagosomes, Recombinant Fusion Proteins, Caenorhabditis elegans, Apoptosis, Phosphatidylinositol 3-Kinases, rab GTP-Binding Proteins, rab5 GTP-Binding Proteins, Caenorhabditis elegans Proteins, Animals, Genetically Modified, Dynamins, RNA Interference, Multiprotein Complexes

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