Evidence map›Paper›PMID 21177818›Full record

ArticleJournal of virology2011

Tupaia CD81, SR-BI, claudin-1, and occludin support hepatitis C virus infection.

Yimin Tong, Yongzhe Zhu, Xueshan Xia, Yuan Liu, Yue Feng, Xian Hua, Zhihui Chen, Hui Ding, Li Gao, Yongzhi Wang and 3 more

Open access · greenAbstract read
In one paragraph

Article in Journal of virology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed
4.1field-weighted citation impact, top 6% 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

40 citing papers in PubMed, 78 citations in OpenAlex.

  1. Molecular mechanisms of SARS-CoV-2 entry: implications for biomedical strategies.Microbiology and molecular biology reviews : MMBR · 2025
    Review
  2. Article
  3. Article
  4. Good Cholesterol Gone Bad? HDL and COVID-19.International journal of molecular sciences · 2021
    Review
  5. Article
  6. Review
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Review
  15. Article
  16. Article
  17. Tree shrew (Zoological research · 2017
    Review
  18. Article
  19. Article
  20. 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

13 authors at 3 institutions in 2 countries.

Yimin TongDepartment of Microbiology, Shanghai Key Laboratory of Medical Biodefense, Second Military Medical University, Shanghai 200433, China.
Yongzhe Zhu
Xueshan Xia
Yuan Liu
Yue Feng
Xian Hua
Zhihui Chen
Hui Ding
Li Gao
Yongzhi Wang
Mark A Feitelson
Ping Zhao
Zhong-Tian Qi
Second Military Medical University · CNKunming University of Science and Technology · CNTemple University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Hepatitis C virus (HCV)-related research has been hampered by the lack of appropriate small-animal models. It has been reported that tree shrews, or tupaias (Tupaia belangeri), can be infected with serum-derived HCV. However, these reports do not firmly establish the tupaia as a reliable model of HCV infection. Human CD81, scavenger receptor class B type I (SR-BI), claudin 1 (CLDN1), and occludin (OCLN) are considered essential receptors or coreceptors for HCV cell entry. In the present study, the roles of these tupaia orthologs in HCV infection were assessed. Both CD81 and SR-BI of tupaia were found to be able to bind with HCV envelope protein 2 (E2). In comparison with human CD81, tupaia CD81 exhibited stronger binding activity with E2 and increased HCV pseudoparticle (HCVpp) cell entry 2-fold. The 293T cells transfected with tupaia CLDN1 became susceptible to HCVpp infection. Moreover, simultaneous transfection of the four tupaia factors into mouse NIH 3T3 cells made the cells susceptible to HCVpp infection. HCVpp of diverse genotypes were able to infect primary tupaia hepatocytes (PTHs), and this infection could be blocked by either anti-CD81 or anti-SR-BI. PTHs could be infected by cell culture-produced HCV (HCVcc) and did produce infectious progeny virus in culture supernatant. These findings indicate that PTHs possess all of the essential factors required for HCV entry and support the complete HCV infection cycle. This highlights both the mechanisms of susceptibility of tupaia to HCV infection and the possibility of using tupaia as a promising small-animal model in HCV study.

Indexed as

AnimalsAntigens, CDCD36 AntigensCell LineClaudin-1Disease Models, AnimalHepacivirusHumansMembrane ProteinsMiceMolecular Sequence DataOccludinProtein BindingSequence Analysis, DNATetraspanin 28TupaiaAntigens, CDCD36 AntigensCD81 protein, humanCd81 protein, mouseClaudin-1CLDN1 protein, humanCldn1 protein, mouseglycoprotein E2, Hepatitis C virusMembrane ProteinsOccludinOCLN protein, humanOcln protein, mouseTetraspanin 28Viral Envelope Proteins

Identifiers

PMID21177818
PMCPMC3067968
OpenAlexW2104633798

What OpenQuestion holds

Textmetadata
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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.