Evidence map›Paper›PMID 18032503›Full record

ArticleJournal of virology2008

Calpain 1 and 2 are required for RNA replication of echovirus 1.

Paula Upla, Varpu Marjomäki, Liisa Nissinen, Camilla Nylund, Matti Waris, Timo Hyypiä, Jyrki Heino

Open access · greenAbstract read
In one paragraph

Article in Journal of virology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
1.2field-weighted citation impact, top 18% 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

23 citing papers in PubMed, 40 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Article
  5. Calpain-2 protein influencesFrontiers in microbiology · 2023
    Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. CD163Frontiers in microbiology · 2019
    Article
  12. Article
  13. Article
  14. Review
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
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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 3 institutions in 1 country.

Paula UplaDepartment of Biochemistry and Food Chemistry, University of Turku, FI-20520 Turku, Finland.
Varpu Marjomäki
Liisa Nissinen
Camilla Nylund
Matti Waris
Timo Hyypiä
Jyrki Heino
University of Turku · FIUniversity of Jyväskylä · FITurku Centre for Biotechnology · FI

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Calpains are calcium-dependent cysteine proteases that degrade cytoskeletal and cytoplasmic proteins. We have studied the role of calpains in the life cycle of human echovirus 1 (EV1). The calpain inhibitors, including calpeptin, calpain inhibitor 1, and calpain inhibitor 2 as well as calpain 1 and calpain 2 short interfering RNAs, completely blocked EV1 infection in the host cells. The effect of the inhibitors was not specific for EV1, because they also inhibited infection by other picornaviruses, namely, human parechovirus 1 and coxsackievirus B3. The importance of the calpains in EV1 infection also was supported by the fact that EV1 increased calpain activity 3 h postinfection. Confocal microscopy and immunoelectron microscopy showed that the EV1/caveolin-1-positive vesicles also contain calpain 1 and 2. Our results indicate that calpains are not required for virus entry but that they are important at a later stage of infection. Calpain inhibitors blocked the production of EV1 particles after microinjection of EV1 RNA into the cells, and they effectively inhibited the synthesis of viral RNA in the host cells. Thus, both calpain 1 and calpain 2 are essential for the replication of EV1 RNA.

Indexed as

CalpainCell LineCytoplasmic VesiclesEnterovirus B, HumanEnzyme InhibitorsGene SilencingHumansMicroscopy, ConfocalMicroscopy, ImmunoelectronParechovirusRNA, ViralVirus ReplicationCalpainCAPN1 protein, humanCAPN2 protein, humanEnzyme InhibitorsRNA, Viral

Identifiers

PMID18032503
PMCPMC2224425
OpenAlexW2168540822

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.