Evidence map›Paper›PMID 1500169›Full record

ArticleInfection and immunity1992

Host cell actin assembly is necessary and likely to provide the propulsive force for intracellular movement of Listeria monocytogenes.

J M Sanger, J W Sanger, F S Southwick

Open access · bronzeAbstract read
In one paragraph

Article in Infection and immunity, 1992. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 67 papers.

0numbers the graph read from it
0cells of the map it votes in
67citing papers in PubMed
14.4field-weighted citation impact, top 1% 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

67 citing papers in PubMed, 163 citations in OpenAlex.

  1. Article
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  4. Review
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  7. Three-dimensional architecture of actin filaments in Listeria monocytogenes comet tails.Proceedings of the National Academy of Sciences of the United States of America · 2013
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  19. Gelsolin mediates calcium-dependent disassembly of Listeria actin tails.Proceedings of the National Academy of Sciences of the United States of America · 2005
    Article
  20. Article

7 more citing papers are in PubMed but not listed here.

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

3 authors at 1 institution in 1 country.

J M SangerDepartment of Anatomy, Pennsylvania Muscle Institute, Philadelphia 19104.
J W Sanger
F S Southwick
The Wistar Institute · US

Funding

VASCULAR SMOOTH MUSCLEP01HL015835 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI GOLDMAN, YALE E · 1985 to 2002
$5.5M
LISTERIA USES HOST CELL ACTIN TO SPREAD CELL TO CELLR01AI034276 · NIAID · UNIVERSITY OF FLORIDA · PI SOUTHWICK, FREDERICK S · 1993 to 2014
$3.3M
REGULATION OF ACTIN FILAMENT FORMATION IN PHAGOCYTESR01AI023262 · NIAID · UNIVERSITY OF PENNSYLVANIA · PI SOUTHWICK, FREDERICK S · 1985 to 2010
$3.3M
Accommodation in TransplantationR56AI123262 · NIAID · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI CASCALHO, MARILIA ISABEL, PLATT, JEFFREY L · 2016 to 2016
$388k
NHLBI NIH HHS HL15835NIAID NIH HHS AI123262NIAID NIH HHS R01 AI023262NIAID NIH HHS R01 AI034276
6 · The paper itself

Abstract

Listeria monocytogenes is able to escape from the phagolysosome and grow within the host cell cytoplasm. By 3 h after initiation of infection, actin filaments begin to concentrate at one end of the bacterium. Polarization of F-actin is associated with intracellular bacterial movement, long projections of actin filaments forming directly behind the moving bacteria. New actin monomers are added to the region of the projection in proximity to the bacterium. The rate of new actin filament growth correlates closely with the speed of bacterial migration. This actin structure is anchored within the cytoplasm, serving as a fixed platform for directional expansion of the actin filament network. The actin projection progressively lengthens as the bacterium migrates. Cytochalasin blocks both elongation of the projection and bacterial movement but does not result in complete depolymerization of the bacterially induced actin structure, residual actin and alpha-actinin persisting in proximity to one end of the bacterium. Bacteria initially migrate within the cortical cytoplasm but later move to the peripheral membrane, where they form filopodiumlike structures which pivot and undulate in the extracellular medium. In the filopodia, bacteria are occasionally seen to abruptly change direction, turn 180 degrees, and move back into the medullary region of the host cell. All filopodium movement ceases once the bacterium containing the F-actin projection returns to the cortical cytoplasm. These results indicate that host cell actin polymerization is necessary for intracellular migration of listeriae and suggest that directional actin assembly may in fact generate the propulsive force for bacterial and filopodial movement.

Indexed as

ActinsAnimalsCell LineCytochalasin DListeria monocytogenesMicroscopyMovementRatsActinsCytochalasin D

Identifiers

PMID1500169
PMCPMC257368
OpenAlexW2106568726

What OpenQuestion holds

Textmetadata
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 OpenQuestion graph.