Evidence map›Paper›PMID 39187803›Full record

ArticleBMC microbiology2024

Development of RPA-Cas12a assay for rapid and sensitive detection of Pneumocystis jirovecii.

Qiming Liu, Hao Zeng, Ting Wang, HongXia Ni, Yongdong Li, Weidong Qian, Ting Fang, Guozhang Xu

Abstract read
In one paragraph

Article in BMC microbiology, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed, 1 pooled it
–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

6 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Diagnostic tests performance in detecting Pneumocystis jirovecii: A systematic review and meta-analysis.European journal of clinical microbiology & infectious diseases : official publication of the European Society of Clinical Microbiology · 2025
    Pooled it
  2. Article
  3. Advances in pathogen detection ofInfectious medicine · 2025
    Review
  4. CRISPR-Cas12 Application for the Detection ofInternational journal of molecular sciences · 2025
    Article
  5. Article
  6. 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

8 authors.

Qiming Liu *School of Biological and Pharmaceutical Sciences, Shaanxi University of Science and Technology, Xi'an, 710021, China.
Hao Zeng *School of Biological and Pharmaceutical Sciences, Shaanxi University of Science and Technology, Xi'an, 710021, China.
Ting WangSchool of Biological and Pharmaceutical Sciences, Shaanxi University of Science and Technology, Xi'an, 710021, China.
HongXia NiNingbo Municipal Key Laboratory of Virology, Ningbo Municipal Center for Disease Control and Prevention, Ningbo, 315010, China.
Yongdong LiNingbo Municipal Key Laboratory of Virology, Ningbo Municipal Center for Disease Control and Prevention, Ningbo, 315010, China.
Weidong QianSchool of Biological and Pharmaceutical Sciences, Shaanxi University of Science and Technology, Xi'an, 710021, China. qianwd@sust.edu.cn.
Ting FangDepartment of Epidemiology and Biostatistics, School of Public Health Health Science Center of Ningbo University, Ningbo, 315211, China. fangting@nbu.edu.cn.
Guozhang XuDepartment of Epidemiology and Biostatistics, School of Public Health Health Science Center of Ningbo University, Ningbo, 315211, China. xuguozhang@nbu.edu.cn.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Pneumocystis jirovecii is a prevalent opportunistic fungal pathogen that can lead to life-threatening Pneumocystis pneumonia in immunocompromised individuals. Given that timely and accurate diagnosis is essential for initiating prompt treatment and enhancing patient outcomes, it is vital to develop a rapid, simple, and sensitive method for P. jirovecii detection. Herein, we exploited a novel detection method for P. jirovecii by combining recombinase polymerase amplification (RPA) of nucleic acids isothermal amplification and the trans cleavage activity of Cas12a. The factors influencing the efficiency of RPA and Cas12a-mediated trans cleavage reaction, such as RPA primer, crRNA, the ratio of crRNA to Cas12a and ssDNA reporter concentration, were optimized. Our RPA-Cas12a-based fluorescent assay can be completed within  30-40 min, comprising a 25-30 min RPA reaction and a 5-10 min trans cleavage reaction. It can achieve a lower detection threshold of 0.5 copies/µL of target DNA with high specificity. Moreover, our RPA-Cas12a-based fluorescent method was examined using 30 artificial samples and demonstrated high accuracy with a diagnostic accuracy of 93.33%. In conclusion, a novel, rapid, sensitive, and cost-effective RPA-Cas12a-based detection method was developed and demonstrates significant potential for on-site detection of P. jirovecii in resource-limited settings.

Indexed as

Nucleic Acid Amplification TechniquesPneumocystis cariniiSensitivity and SpecificityBacterial ProteinsCRISPR-Associated ProteinsDNA, FungalEndodeoxyribonucleasesHumansMolecular Diagnostic TechniquesPneumonia, PneumocystisRecombinasesBacterial ProteinsCas12a proteinCRISPR-Associated ProteinsDNA, FungalEndodeoxyribonucleasesRecombinasesCRISPR-Cas12aDetectionPneumocystis jiroveciiRecombinase polymerase amplificationResource-limited settings

Identifiers

PMID39187803
PMCPMC11345955

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.