Evidence map›Paper›PMID 17475660›Full record

ArticleJournal of virology2007

Influenza virus hemagglutinin and neuraminidase, but not the matrix protein, are required for assembly and budding of plasmid-derived virus-like particles.

Benjamin J Chen, George P Leser, Eiji Morita, Robert A Lamb

Open access · greenAbstract read
In one paragraph

Article in Journal of virology, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 164 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
164citing papers in PubMed, 1 pooled it
12.9field-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

164 citing papers in PubMed, 1 synthesis or guideline pooled it, 301 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Review
  5. Molecular architecture of Influenza A virions.bioRxiv : the preprint server for biology · 2026
    Article
  6. Review
  7. Article
  8. Article
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  12. Article
  13. Article
  14. ProcClusterFrontiers in microbiology · 2024
    Article
  15. Article
  16. Review
  17. Article
  18. Article
  19. Article
  20. Article

104 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

4 authors at 3 institutions in 2 countries.

Benjamin J ChenDepartment of Biochemistry, Molecular Biology and Cell Biology, Northwestern University, Evanston, IL 60208-3500, USA.
George P Leser
Eiji Morita
Robert A Lamb
Institute of Molecular and Cell Biology · RUNorthwestern University · USUniversity of Utah · US

Funding

MEDICAL SCIENTIST TRAINING PROGRAMT32GM008152 · NIGMS · NORTHWESTERN UNIVERSITY AT CHICAGO · PI ARDEHALI, HOSSEIN · 1987 to 2021
$24.0M
CELLULAR &MOLECULAR BASIS OF DISEASE TRAINING PROGRAMT32GM008061 · NIGMS · NORTHWESTERN UNIVERSITY · PI CARTHEW, RICHARD W. · 1985 to 2022
$17.1M
STRUCTURE/FUNCTION OF THE INFLUENZA VIRUS GENOMER37AI020201 · NIAID · NORTHWESTERN UNIVERSITY · PI LAMB, ROBERT A · 1987 to 2006
$1.8M
NIAID NIH HHS R37 AI020201NIAID NIH HHS R37 AI20201NIGMS NIH HHS T32 GM008061NIGMS NIH HHS T32 GM008152
6 · The paper itself

Abstract

For influenza virus, we developed an efficient, noncytotoxic, plasmid-based virus-like particle (VLP) system to reflect authentic virus particles. This system was characterized biochemically by analysis of VLP protein composition, morphologically by electron microscopy, and functionally with a VLP infectivity assay. The VLP system was used to address the identity of the minimal set of viral proteins required for budding. Combinations of viral proteins were expressed in cells, and the polypeptide composition of the particles released into the culture media was analyzed. Contrary to previous findings in which matrix (M1) protein was considered to be the driving force of budding because M1 was found to be released copiously into the culture medium when M1 was expressed by using the vaccinia virus T7 RNA polymerase-driven overexpression system, in our noncytotoxic VLP system M1 was not released efficiently into the culture medium. Additionally, hemagglutinin (HA), when treated with exogenous neuraminidase (NA) or coexpressed with viral NA, could be released from cells independently of M1. Incorporation of M1 into VLPs required HA expression, although when M1 was omitted from VLPs, particles with morphologies similar to those of wild-type VLPs or viruses were observed. Furthermore, when HA and NA cytoplasmic tail mutants were included in the VLPs, M1 failed to be efficiently incorporated into VLPs, consistent with a model in which the glycoproteins control virus budding by sorting to lipid raft microdomains and recruiting the internal viral core components. VLP formation also occurred independently of the function of Vps4 in the multivesicular body pathway, as dominant-negative Vps4 proteins failed to inhibit influenza VLP budding.

Indexed as

Models, BiologicalAnimalsChlorocebus aethiopsCOS CellsDNA-Directed RNA PolymerasesGene ExpressionHeLa CellsHemagglutinin Glycoproteins, Influenza VirusHumansInfluenza A Virus, H3N2 SubtypeNeuraminidasePlasmidsVaccinia virusVero CellsViral Matrix ProteinsViral Proteinsbacteriophage T7 RNA polymeraseDNA-Directed RNA PolymerasesHemagglutinin Glycoproteins, Influenza VirusM1 protein, Influenza A virusNeuraminidaseViral Matrix ProteinsViral Proteins

Identifiers

PMID17475660
PMCPMC1933269
OpenAlexW2149850870

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.