Evidence map›Paper›PMID 29438445›Full record

ArticlePloS one2018

CRISPR/Cas9 in Leishmania mexicana: A case study of LmxBTN1.

Aygul Ishemgulova, Jana Hlaváčová, Karolina Majerová, Anzhelika Butenko, Julius Lukeš, Jan Votýpka, Petr Volf, Vyacheslav Yurchenko

Open access · goldAbstract readValidation Study
In one paragraph

Article in PloS one, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
3.7field-weighted citation impact, top 7% 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

24 citing papers in PubMed, 32 citations in OpenAlex.

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  20. Frontiers in cellular and infection microbiology · 2020
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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

8 authors at 3 institutions in 1 country.

Aygul IshemgulovaLife Science Research Centre, Faculty of Science, University of Ostrava, Ostrava, Czech Republic.
Jana HlaváčováDepartment of Parasitology, Faculty of Science, Charles University, Prague, Czech Republic.
Karolina MajerováDepartment of Parasitology, Faculty of Science, Charles University, Prague, Czech Republic.ORCID 0000-0001-7701-5778
Anzhelika ButenkoLife Science Research Centre, Faculty of Science, University of Ostrava, Ostrava, Czech Republic.
Julius LukešBiology Centre, Institute of Parasitology, Czech Academy of Sciences, České Budejovice (Budweis), Czech Republic.
Jan VotýpkaBiology Centre, Institute of Parasitology, Czech Academy of Sciences, České Budejovice (Budweis), Czech Republic.
Petr VolfDepartment of Parasitology, Faculty of Science, Charles University, Prague, Czech Republic.
Vyacheslav YurchenkoLife Science Research Centre, Faculty of Science, University of Ostrava, Ostrava, Czech Republic.ORCID 0000-0003-4765-3263
Charles University · CZUniversity of Ostrava · CZUniversity of South Bohemia in České Budějovice · CZ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Leishmania parasites cause human cutaneous, mucocutaneous and visceral leishmaniasis. Several studies proposed involvement of certain genes in infectivity of these parasites based on differential mRNA expression data. Due to unusual gene expression mechanism, functions of such genes must be further validated experimentally. Here, we investigated a role of one of the putative virulence factors, LmxM.22.0010-encoded BTN1 (a protein involved in Batten disease in humans), in L. mexicana infectivity. Due to the incredible plasticity of the L. mexicana genome, we failed to obtain a complete knock-out of LmxM.22.0010 using conventional recombination-based approach even after ablating four alleles of this gene. To overcome this, we established a modified CRISPR-Cas9 system with genomic expression of Cas9 nuclease and gRNA. Application of this system allowed us to establish a complete BTN1 KO strain of L. mexicana. The mutant strain did not show any difference in growth kinetics and differentiation in vitro, as well as in the infectivity for insect vectors and mice hosts. Based on the whole-transcriptome profiling, LmxM.22.0010-encoded BTN1 was considered a putative factor of virulence in Leishmania. Our study suggests that ablation of LmxM.22.0010 does not influence L. mexicana infectivity and further illustrates importance of experimental validation of in silico-predicted virulence factors. Here we also describe the whole genome sequencing of the widely used model isolate L. mexicana M379 and report a modified CRISPR/Cas9 system suitable for complete KO of multi-copy genes in organisms with flexible genomes.

Indexed as

CRISPR-Cas SystemsGenes, ProtozoanAnimalsComputer SimulationFemaleGene Expression ProfilingGene Knockout TechniquesHumansInsect VectorsLeishmania mexicanaLeishmaniasis, CutaneousMiceMice, Inbred BALB CPsychodidaeVirulence

Identifiers

PMID29438445
PMCPMC5811015
OpenAlexW2789819224

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.