Evidence map›Paper›PMID 29182646›Full record

ArticlePloS one2017

Transcriptome-wide analysis of the Trypanosoma cruzi proliferative cycle identifies the periodically expressed mRNAs and their multiple levels of control.

Santiago Chávez, Guillermo Eastman, Pablo Smircich, Lorena Lourdes Becco, Carolina Oliveira-Rizzo, Rafael Fort, Mariana Potenza, Beatriz Garat, José Roberto Sotelo-Silveira, María Ana Duhagon

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.4field-weighted citation impact, top 18% 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

14 citing papers in PubMed, 21 citations in OpenAlex.

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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

10 authors at 2 institutions in 1 country.

Santiago ChávezLaboratory of Molecular Interactions, School of Sciences, Universidad de la República, Montevideo, Uruguay.
Guillermo EastmanDepartment of Genomics, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, Uruguay.
Pablo SmircichLaboratory of Molecular Interactions, School of Sciences, Universidad de la República, Montevideo, Uruguay.
Lorena Lourdes BeccoLaboratory of Molecular Interactions, School of Sciences, Universidad de la República, Montevideo, Uruguay.
Carolina Oliveira-RizzoLaboratory of Molecular Interactions, School of Sciences, Universidad de la República, Montevideo, Uruguay.
Rafael FortLaboratory of Molecular Interactions, School of Sciences, Universidad de la República, Montevideo, Uruguay.
Mariana PotenzaInstitute for Research in Genetic Engineering and Molecular Biology 'Dr. N.H. Torres', Buenos Aires, Argentina.
Beatriz GaratLaboratory of Molecular Interactions, School of Sciences, Universidad de la República, Montevideo, Uruguay.
José Roberto Sotelo-SilveiraDepartment of Genomics, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo, Uruguay.
María Ana DuhagonLaboratory of Molecular Interactions, School of Sciences, Universidad de la República, Montevideo, Uruguay.ORCID http://orcid.org/0000-0001-6468-1704
Universidad de la República de Uruguay · UYInstituto de Investigaciones Biológicas Clemente Estable · UY

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Trypanosoma cruzi is the protozoan parasite causing American trypanosomiasis or Chagas disease, a neglected parasitosis with important human health impact in Latin America. The efficacy of current therapy is limited, and its toxicity is high. Since parasite proliferation is a fundamental target for rational drug design, we sought to progress into its understanding by applying a genome-wide approach. Treating a TcI linage strain with hydroxyurea, we isolated epimastigotes in late G1, S and G2/M cell cycle stages at 70% purity. The sequencing of each phase identified 305 stage-specific transcripts (1.5-fold change, p≤0.01), coding for conserved cell cycle regulated proteins and numerous proteins whose cell cycle dependence has not been recognized before. Comparisons with the parasite T. brucei and the human host reveal important differences. The meta-analysis of T. cruzi transcriptomic and ribonomic data indicates that cell cycle regulated mRNAs are subject to sub-cellular compartmentalization. Compositional and structural biases of these genes- including CAI, GC content, UTR length, and polycistron position- may contribute to their regulation. To discover nucleotide motifs responsible for the co-regulation of cell cycle regulated genes, we looked for overrepresented motifs at their UTRs and found a variant of the cell cycle sequence motif at the 3' UTR of most of the S and G2 stage genes. We additionally identified hairpin structures at the 5' UTRs of a high proportion of the transcripts, suggesting that periodic gene expression might also rely on translation initiation in T. cruzi. In summary, we report a comprehensive list of T. cruzi cell cycle regulated genes, including many previously unstudied proteins, we show evidence favoring a multi-step control of their expression, and we identify mRNA motifs that may mediate their regulation. Our results provide novel information of the T. cruzi proliferative proteins and the integrated levels of their gene expression control.

Indexed as

TranscriptomeAnimalsHigh-Throughput Nucleotide SequencingRNA, MessengerSpecies SpecificityTrypanosoma cruziRNA, Messenger

Identifiers

PMID29182646
PMCPMC5705152
OpenAlexW2769506155

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.