Evidence map›Paper›PMID 16051869›Full record

ArticleJournal of virology2005

Caveola-dependent endocytic entry of amphotropic murine leukemia virus.

Christiane Beer, Ditte S Andersen, Aleksandra Rojek, Lene Pedersen

Open access · greenAbstract read
In one paragraph

Article in Journal of virology, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 52 papers.

0numbers the graph read from it
0cells of the map it votes in
52citing papers in PubMed
1.9field-weighted citation impact, top 15% 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

52 citing papers in PubMed, 77 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
  4. Membrane Rafts: Portals for Viral Entry.Frontiers in microbiology · 2021
    Review
  5. Review
  6. Caveolae as Potential Hijackable Gates in Cell Communication.Frontiers in cell and developmental biology · 2020
    Review
  7. Review
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Cell Walls and the Convergent Evolution of the Viral Envelope.Microbiology and molecular biology reviews : MMBR · 2015
    Review
  15. Article
  16. Intracellular trafficking of hybrid gene delivery vectors.Journal of controlled release : official journal of the Controlled Release Society · 2015
    Article
  17. A sorting signal suppresses IFITM1 restriction of viral entry.The Journal of biological chemistry · 2015
    Article
  18. Article
  19. Article
  20. Efficient in vitro gene delivery by hybrid biopolymer/virus nanobiovectors.Journal of controlled release : official journal of the Controlled Release Society · 2014
    Article
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 2 institutions in 2 countries.

Christiane BeerDepartment of Molecular Biology, Aarhus University, C. F. Møllers Allé, Bldg. 130, DK-8000 Aarhus C, Denmark.
Ditte S Andersen
Aleksandra Rojek
Lene Pedersen
Institute of Clinical Research · USAarhus University · DK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Early results suggested that the amphotropic murine leukemia virus (A-MLV) does not enter cells via endocytosis through clathrin-coated pits and this gammaretrovirus has therefore been anticipated to fuse directly with the plasma membrane. However, here we present data implicating a caveola-mediated endocytic entry route for A-MLV via its receptor Pit2. Caveolae belong to the cholesterol-rich microdomains characterized by resistance to nonionic detergents such as Triton X-100. Extraction of murine fibroblastic NIH 3T3 cells in cold Triton X-100 showed the presence of the A-MLV receptor Pit2 in detergent-insoluble microdomains. Using coimmunoprecipitation of cell extracts, we were able to demonstrate direct association of Pit2 with caveolin-1, the structural protein of caveolae. Other investigations revealed that A-MLV infection in contrast to vesicular stomatitis virus infection is a slow process (t(1/2) approximately 5 h), which is dependent on plasma membrane cholesterol but independent of NH4Cl treatment of cells; NH4Cl impairs entry via clathrin-coated pits. Furthermore, expression of dominant-negative caveolin-1 decreased the susceptibility to infection via Pit2 by approximately 70%. These results show that A-MLV can enter cells via a caveola-dependent entry route. Moreover, increase in A-MLV infection by treatment with okadaic acid as well as entry of fusion-defective fluorescent A-MLV virions in NIH 3T3 cells further confirmed our findings and show that A-MLV can enter mouse fibroblasts via an endocytic entry route involving caveolae. Finally, we also found colocalization of fusion-defective fluorescent A-MLV virions with caveolin-1 in NIH 3T3 cells. This is the first time substantial evidence has been presented implicating the existence of a caveola-dependent endocytic entry pathway for a retrovirus.

Indexed as

EndocytosisAnimalsCaveolaeCaveolin 1CaveolinsCholesterolHydrogen-Ion ConcentrationLeukemia Virus, MurineMembrane ProteinsMiceNIH 3T3 CellsOkadaic AcidReceptors, VirusCav1 protein, mouseCaveolin 1CaveolinsCholesterolleukemia virus receptor, gibbon apeMembrane ProteinsOkadaic AcidReceptors, Virus

Identifiers

PMID16051869
PMCPMC1182675
OpenAlexW2085197897

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.