Cited by 1,302Tuberculosis Research and EpidemiologyMycobacterium research and diagnosisCellular transport and secretion

Lack of Acidification in Mycobacterium Phagosomes Produced by Exclusion of the Vesicular Proton-ATPase

Sturgill-Koszycki, Sheila, Schlesinger, Paul H., Chakraborty, Prasanta, Haddix, Pryce L., Collins, Helen L., Fok, Agnes K., Allen, Richard D., Gluck, Stephen L. +2 more·1994·Science

Abstract

The success of Mycobacterium species as pathogens depends on their ability to maintain an infection inside the phagocytic vacuole of the macrophage. Although the bacteria are reported to modulate maturation of their intracellular vacuoles, the nature of such modifications is unknown. In this study, vacuoles formed around Mycobacterium avium failed to acidify below pH 6.3 to 6.5. Immunoelectron microscopy of infected macrophages and immunoblotting of isolated phagosomes showed that Mycobacterium vacuoles acquire the lysosomal membrane protein LAMP-1, but not the vesicular proton-adenosine triphosphatase (ATPase) responsible for phagosomal acidification. This suggests either a selective inhibition of fusion with proton-ATPase-containing vesicles or a rapid removal of the complex from Mycobacterium phagosomes.

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Crossref · 10.1126/science.8303277

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26 of 26 references verified0 citation errors · 0 not checkable

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  • The early phagosome lacks the proton pumping vATPase and is therefore characterized by a mildly acidic pH of 6-6.5.

    “The early phagosome lacks the proton pumping vesicular ATPase (vATPase) and is therefore characterized by a mildly acidic pH of 6–6.5 (21).”

    From Macrophage defense mechanisms against intracellular bacteria (2015) · cites this paper as [21]

  • NRAMP1 is a transmembrane transporter in late phagosomes that regulates phagosome acidification and pH-dependent shuttling of divalent metals including iron, zinc, and manganese across the phagolysosomal membrane.

    “NRAMP1 is a transmembrane transporter expressed in late phagosomes, where it exerts multiple functions including regulation of phagosome acidification, which is, however, exerted mainly by v-ATPase [144] along with pH-dependent shuttling of divalent metals, including Fe, zinc and manganese, across the phagolysosomal membrane [145-147] (Fig 3).”

    From The Iron age of host–microbe interactions (2015) · cites this paper as [144]

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Authors
Sturgill-Koszycki, S., Schlesinger, P. H., Chakraborty, P., Haddix, P. L., Collins, H. L., Fok, A. K., Allen, R. D., Gluck, S. L., Heuser, J., & Russell, D. G.
Affiliations
  • Washington University Medical Center (US)
  • University of Hawaiʻi at Mānoa (US)
Venue
Science
Published
1994-02-04
Volume
263
Issue
5147
Pages
678-681
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2147251439
Cited by
1,302
References
26
Citations by year
2026: 17 · 2025: 17 · 2024: 15 · 2023: 21 · 2022: 24 · 2021: 37 · 2020: 34 · 2019: 38 · 2018: 25 · 2017: 42 · 2016: 37 · 2015: 39 · 2014: 67 · 2013: 39 · 2012: 45
FWCI
47.28
Type
journal article
Language
en
Open access
closed
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institutes of Health (1r01ai034207-01, 5r01ar042370-04, 5r01ai026889-03)
  • National Institute of Allergy and Infectious Diseases (AI 26889, AI 34207)
  • National Institute of Arthritis and Musculoskeletal and Skin Diseases (AR 42370)
Topics
  • Health Sciences › Medicine › Infectious Diseases › Tuberculosis Research and Epidemiology
  • Health Sciences › Medicine › Epidemiology › Mycobacterium research and diagnosis
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Cell Biology › Cellular transport and secretion
Keywords
Mycobacterium avium, phagosome acidification, phagosome maturation, macrophages, LAMP1, lysosomal membrane proteins, intracellular bacterial survival, mycobacterial pathogenesis
MeSH terms
Animals, Proton-Translocating ATPases, Hydrogen-Ion Concentration, Leishmania mexicana, Macrophages, Membrane Fusion, Membrane Glycoproteins, Mycobacterium avium, Mycobacterium tuberculosis, Phagosomes, Vacuoles, Antigens, CD, Microscopy, Immunoelectron, Mice, Lysosomal Membrane Proteins

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