Evidence map›Paper›PMID 20504919›Full record

ArticleJournal of virology2010

Patterns of Human Immunodeficiency Virus type 1 recombination ex vivo provide evidence for coadaptation of distant sites, resulting in purifying selection for intersubtype recombinants during replication.

Andrea Galli, Mary Kearney, Olga A Nikolaitchik, Sloane Yu, Mario P S Chin, Frank Maldarelli, John M Coffin, Vinay K Pathak, Wei-Shau Hu

Open access · greenAbstract read
In one paragraph

Article in Journal of virology, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
1.3field-weighted citation impact, top 22% 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

27 citing papers in PubMed, 38 citations in OpenAlex.

  1. Article
  2. Varicella-Zoster Virus-Genetics, Molecular Evolution and Recombination.Current topics in microbiology and immunology · 2023
    Article
  3. Article
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  9. Review
  10. Article
  11. Article
  12. Article
  13. Article
  14. Review
  15. Recombination in viruses: mechanisms, methods of study, and evolutionary consequences.Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases · 2015
    Review
  16. Review
  17. Article
  18. Article
  19. Article
  20. Translational research insights from completed HIV vaccine efficacy trials.Journal of acquired immune deficiency syndromes (1999) · 2013
    Review
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

9 authors at 3 institutions in 1 country.

Andrea GalliHIV Drug Resistance Program, National Cancer Institute-Frederick, Frederick, Maryland 21702, USA.
Mary Kearney
Olga A Nikolaitchik
Sloane Yu
Mario P S Chin
Frank Maldarelli
John M Coffin
Vinay K Pathak
Wei-Shau Hu
Frederick National Laboratory for Cancer Research · USNational Cancer Institute · USTufts University · US

Funding

HIV-1 Genetic Variation in Infected IndividualsZIABC010819 · NCI · DIVISION OF BASIC SCIENCES - NCI · PI MALDARELLI, FRANK · 2009 to 2025
$9.9M
Understanding Retroviral Reverse Transcription, Recombination, and ReplicationZIABC010504 · NCI · DIVISION OF BASIC SCIENCES - NCI · PI HU, WEI-SHAU · 2009 to 2025
$5.3M
Mechanisms of HIV-1 Reverse TranscriptionZIABC010533 · NCI · DIVISION OF BASIC SCIENCES - NCI · PI PATHAK, VINAY K. · 2009 to 2011
$407k
Intramural NIH HHS
6 · The paper itself

Abstract

High-frequency recombination is a hallmark of HIV-1 replication. Recombination can occur between two members of the same subtype or between viruses from two different subtypes, generating intra- or intersubtype recombinants, respectively. Many intersubtype recombinants have been shown to circulate in human populations. We hypothesize that sequence diversity affects the emergence of viable recombinants by decreasing recombination events and reducing the ability of the recombinants to replicate. To test our hypothesis, we compared recombination between two viruses containing subtype B pol genes (B/B) and between viruses with pol genes from subtype B or F (B/F). Recombination events generated during a single cycle of infection without selection pressure on pol gene function were analyzed by single-genome sequencing. We found that recombination occurred slightly ( approximately 30%) less frequently in B/F than in B/B viruses, and the overall distribution of crossover junctions in pol was similar for the two classes of recombinants. We then examined the emergence of recombinants in a multiple cycle assay, so that functional pol gene products were selected. We found that the emerging B/B recombinants had complex patterns, and the crossover junctions were distributed throughout the pol gene. In contrast, selected B/F recombinants had limited recombination patterns and restricted crossover junction distribution. These results provide evidence for the evolved coadapted sites in variants from different subtypes; these sites may be segregated by recombination events, causing the newly generated intersubtype recombinants to undergo purifying selection. Therefore, the ability of the recombinants to replicate is the major barrier for many of these viruses.

Indexed as

Evolution, MolecularRecombination, GeneticSelection, GeneticCell LineCluster AnalysisGenotypeHIV-1HumansPhylogenyRNA, ViralSequence Analysis, DNASequence HomologyRNA, Viral

Identifiers

PMID20504919
PMCPMC2897624
OpenAlexW2155900682

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.