Evidence map›Paper›PMID 36409075›Full record

ArticlemBio2022

The Obligate Intracellular Bacterial Pathogen Anaplasma phagocytophilum Exploits Host Cell Multivesicular Body Biogenesis for Proliferation and Dissemination.

Curtis B Read, Mary Clark H Lind, Travis J Chiarelli, Jerilyn R Izac, Haley E Adcox, Richard T Marconi, Jason A Carlyon

Open access · goldAbstract read
In one paragraph

Article in mBio, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
4.4field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

20 citing papers in PubMed, 25 citations in OpenAlex.

  1. Machine Learning-Based Detection ofPathogens (Basel, Switzerland) · 2026
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  5. mBio · 2026
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  6. Review
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  9. Exosomes in Diabetic Wound Healing: Mechanisms, Applications, and Perspectives.Diabetes, metabolic syndrome and obesity : targets and therapy · 2025
    Review
  10. Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  11. The multifunctionProceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  12. Article
  13. Article
  14. Article
  15. Review
  16. Rab27 in tick extracellular vesicle biogenesis and infection.bioRxiv : the preprint server for biology · 2023
    Article
  17. Review
  18. Review
  19. Innate immunity in rickettsial infections.Frontiers in cellular and infection microbiology · 2023
    Review
  20. Establishing the intracellular niche of obligate intracellular vacuolar pathogens.Frontiers in cellular and infection microbiology · 2023
    Review
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 1 institution in 1 country.

Curtis B ReadDepartment of Microbiology and Immunology, Virginia Commonwealth University Medical Center, School of Medicine, Richmond, Virginia, USA.
Mary Clark H LindDepartment of Microbiology and Immunology, Virginia Commonwealth University Medical Center, School of Medicine, Richmond, Virginia, USA.
Travis J ChiarelliDepartment of Microbiology and Immunology, Virginia Commonwealth University Medical Center, School of Medicine, Richmond, Virginia, USA.
Jerilyn R IzacDepartment of Microbiology and Immunology, Virginia Commonwealth University Medical Center, School of Medicine, Richmond, Virginia, USA.
Haley E AdcoxDepartment of Microbiology and Immunology, Virginia Commonwealth University Medical Center, School of Medicine, Richmond, Virginia, USA.
Richard T MarconiDepartment of Microbiology and Immunology, Virginia Commonwealth University Medical Center, School of Medicine, Richmond, Virginia, USA.ORCID 0000-0002-6035-7306
Jason A CarlyonDepartment of Microbiology and Immunology, Virginia Commonwealth University Medical Center, School of Medicine, Richmond, Virginia, USA.ORCID 0000-0003-2778-5066
Virginia Commonwealth University Medical Center · US

Funding

The roles of Anaplasma phagocytophilum surface proteins in infectionR01AI072683 · NIAID · VIRGINIA COMMONWEALTH UNIVERSITY · PI CARLYON, JASON A · 2007 to 2021
$5.8M
The roles of ceramide and its derivatives in A. phagocytophilum pathogenesisR01AI139072 · NIAID · VIRGINIA COMMONWEALTH UNIVERSITY · PI CHARLES E. CHALFANT, Jason A Carlyon · 2018 to 2026
$5.7M
The roles of Anaplasma phagocytophilum surface proteins in infectionR37AI072683 · NIAID · VIRGINIA COMMONWEALTH UNIVERSITY · PI Jason A Carlyon · 2022 to 2026
$2.6M
BLRD VA I01 BX006063NIAID NIH HHS R01 AI072683NIAID NIH HHS R01 AI139072NIAID NIH HHS R37 AI072683
6 · The paper itself

Abstract

Anaplasma phagocytophilum is the etiologic agent of the emerging infection, granulocytic anaplasmosis. This obligate intracellular bacterium lives in a host cell-derived vacuole that receives membrane traffic from multiple organelles to fuel its proliferation and from which it must ultimately exit to disseminate infection. Understanding of these essential pathogenic mechanisms has remained poor. Multivesicular bodies (MVBs) are late endosomal compartments that receive biomolecules from other organelles and encapsulate them into intralumenal vesicles (ILVs) using endosomal sorting complexes required for transport (ESCRT) machinery and ESCRT-independent machinery. Association of the ESCRT-independent protein, ALIX, directs MVBs to the plasma membrane where they release ILVs as exosomes. We report that the A. phagocytophilum vacuole (ApV) is acidified and enriched in lysobisphosphatidic acid, a lipid that is abundant in MVBs. ESCRT-0 and ESCRT-III components along with ALIX localize to the ApV membrane. siRNA-mediated inactivation of ESCRT-0 and ALIX together impairs A. phagocytophilum proliferation and infectious progeny production. RNA silencing of ESCRT-III, which regulates ILV scission, pronouncedly reduces ILV formation in ApVs and halts infection by arresting bacterial growth. Rab27a and its effector Munc13-4, which drive MVB trafficking to the plasma membrane and subsequent exosome release, localize to the ApV. Treatment with Nexinhib20, a small molecule inhibitor that specifically targets Rab27a to block MVB exocytosis, abrogates A. phagocytophilum infectious progeny release. Thus, A. phagocytophilum exploits MVB biogenesis and exosome release to benefit each major stage of its intracellular infection cycle: intravacuolar growth, conversion to the infectious form, and exit from the host cell.

Indexed as

Anaplasma phagocytophilumAnaplasmosisCell ProliferationMultivesicular BodiesOrganelle BiogenesisAnimalsEndosomal Sorting Complexes Required for TransportProtein TransportEndosomal Sorting Complexes Required for TransportAnaplasma phagocytophilumESCRTexocytosisexosomeintralumenal vesiclemultivesicular bodymultivesicular endosomeMunc13-4nutritional virulenceobligate intracellular bacteriumRab27arickettsiavacuolar pathogen

Identifiers

PMID36409075
PMCPMC9765717
OpenAlexW4309517202

What Socratic holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.