Evidence map›Paper›PMID 19106144›Full record

ArticleNucleic acids research2009

Sensitive isothermal detection of nucleic-acid sequence by primer generation-rolling circle amplification.

Taku Murakami, Jun Sumaoka, Makoto Komiyama

Open access · goldAbstract readEvaluation Study
In one paragraph

Article in Nucleic acids research, 2009. 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
2.9field-weighted citation impact, top 9% 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, 216 citations in OpenAlex.

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  20. Programmable High-Speed and Hyper-Efficiency DNA Signal Magnifier.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2022
    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

3 authors at 1 institution in 1 country.

Taku MurakamiResearch Center for Advanced Science and Technology, the University of Tokyo, Meguro, Tokyo 153-8904, Japan.
Jun Sumaoka
Makoto Komiyama
The University of Tokyo · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

A simple isothermal nucleic-acid amplification reaction, primer generation-rolling circle amplification (PG-RCA), was developed to detect specific nucleic-acid sequences of sample DNA. This amplification method is achievable at a constant temperature (e.g. 60 degrees C) simply by mixing circular single-stranded DNA probe, DNA polymerase and nicking enzyme. Unlike conventional nucleic-acid amplification reactions such as polymerase chain reaction (PCR), this reaction does not require exogenous primers, which often cause primer dimerization or non-specific amplification. Instead, 'primers' are generated and accumulated during the reaction. The circular probe carries only two sequences: (i) a hybridization sequence to the sample DNA and (ii) a recognition sequence of the nicking enzyme. In PG-RCA, the circular probe first hybridizes with the sample DNA, and then a cascade reaction of linear rolling circle amplification and nicking reactions takes place. In contrast with conventional linear rolling circle amplification, the signal amplification is in an exponential mode since many copies of 'primers' are successively produced by multiple nicking reactions. Under the optimized condition, we obtained a remarkable sensitivity of 84.5 ymol (50.7 molecules) of synthetic sample DNA and 0.163 pg (approximately 60 molecules) of genomic DNA from Listeria monocytogenes, indicating strong applicability of PG-RCA to various molecular diagnostic assays.

Indexed as

DNA, BacterialDNA, CircularDNA PrimersDNA ProbesNucleic Acid Amplification TechniquesSequence Analysis, DNATemperatureTime FactorsDNA, BacterialDNA, CircularDNA PrimersDNA Probes

Identifiers

PMID19106144
PMCPMC2647323
OpenAlexW2150648559

What OpenQuestion holds

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LicenceCC BY-NC
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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.