Evidence map›Paper›PMID 20970745›Full record

ArticleGenomics, proteomics & bioinformatics2010

Regulation of U6 promoter activity by transcriptional interference in viral vector-based RNAi.

Linghu Nie, Meghna Das Thakur, Yumei Wang, Qin Su, Yongliang Zhao, Yunfeng Feng

Abstract read
In one paragraph

Article in Genomics, proteomics & bioinformatics, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
–field-weighted citation impact
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

15 citing papers in PubMed.

  1. Article
  2. Review
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  4. Article
  5. Review
  6. Article
  7. Optimal delivery of RNA interference by viral vectors for cancer therapy.Molecular therapy : the journal of the American Society of Gene Therapy · 2023
    Review
  8. Review
  9. Article
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  11. Article
  12. Review
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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

6 authors.

Linghu NieKey Laboratory of Genome Sciences and Information, Cancer Biology and Genetics Group, Beijing Institute of Genomics, Chinese Acadamy of Sciences, Beijing 100029, China.
Meghna Das Thakur
Yumei Wang
Qin Su
Yongliang Zhao
Yunfeng Feng

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The direct negative impact of the transcriptional activity of one component on the second one in cis is referred to as transcriptional interference (TI). U6 is a type III RNA polymerase III promoter commonly used for driving small hairpin RNA (shRNA) expression in vector-based RNAi. In the design and construction of viral vectors, multiple transcription units may be arranged in close proximity in a space-limited vector. Determining if U6 promoter activity can be affected by TI is critical for the expression of target shRNA in gene therapy or loss-of-function studies. In this research, we designed and implemented a modified retroviral system where shRNA and exogenous gene expressions were driven by two independent transcriptional units. We arranged U6 promoter driving shRNA expression and UbiC promoter in two promoter arrangements. In primary macrophages, we found U6 promoter activity was inhibited by UbiC promoter when in the divergent arrangement but not in tandem. In contrast, PKG promoter had no such negative impact. Instead of enhancing U6 promoter activity, CMV enhancer had significant negative impact on U6 promoter activity in the presence of UbiC promoter. Our results indicate that U6 promoter activity can be affected by TI in a proximal promoter-specific and arrangement-dependent manner.

Indexed as

Promoter Regions, GeneticRNA InterferenceTranscription, GeneticAnimalsCytomegalovirusGenetic TechniquesGenetic VectorsMiceModels, GeneticOxo-Acid-LyasesPolymerase Chain ReactionRetroviridaeRNA, Small InterferingRNA, Small Nuclearchorismate pyruvate lyaseOxo-Acid-LyasesRNA, Small InterferingRNA, Small NuclearU6 small nuclear RNA

Identifiers

PMID20970745
PMCPMC5054135

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Registered trials

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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.