Evidence map›Paper›PMID 10716949›Full record

ArticleGenes & development2000

A major surface glycoprotein of trypanosoma brucei is expressed transiently during development and can be regulated post-transcriptionally by glycerol or hypoxia.

E Vassella, J V Den Abbeele, P Bütikofer, C K Renggli, A Furger, R Brun, I Roditi

Open access · diamondAbstract read
In one paragraph

Article in Genes & development, 2000. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 75 papers.

0numbers the graph read from it
0cells of the map it votes in
75citing 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

75 citing papers in PubMed, 146 citations in OpenAlex.

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  6. Life stage-specific poly(A) site selection regulated byProceedings of the National Academy of Sciences of the United States of America · 2024
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  7. Cell-cell communication in African trypanosomes.Microbiology (Reading, England) · 2023
    Review
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15 more citing papers are in PubMed but not listed here.

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

7 authors at 3 institutions in 2 countries.

E VassellaInstitut für Allgemeine Mikrobiologie, Universität Bern, CH-3012 Bern, Switzerland.
J V Den Abbeele
P Bütikofer
C K Renggli
A Furger
R Brun
I Roditi
University of Bern · CHInstituut voor Tropische Geneeskunde · BESwiss Tropical and Public Health Institute · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Differentiation is a means by which unicellular parasites adapt to different environments. In some cases, the developmental program may be modulated by interactions with the host, but the mechanisms are largely unknown. Trypanosoma brucei is transmitted between mammals by tsetse flies. The development of the procyclic form in the tsetse midgut is marked by the synthesis of a new glycoprotein coat, composed of EP and GPEET procyclins, that is important for survival. Here we demonstrate that the composition of the coat changes in response to extracellular signals in vitro and during development in vivo. EP and GPEET are coinduced when differentiation is initiated. Subsequently, EP expression is maintained, whereas GPEET is repressed after 7-9 days. The timepoint at which GPEET is repressed coincides with the appearance of parasites in a new compartment of the fly midgut. In culture, down-regulation of GPEET can be prevented by exogenous glycerol or accelerated by hypoxia. Regulation is post-transcriptional, and is conferred by the GPEET 3' untranslated region. The same sequence also regulates expression of a reporter gene in the fly. The finding that GPEET is expressed during a defined window during the establishment of infection suggests that it has a specific function in host-parasite interactions rather than a generalized role in shielding underlying membrane molecules.

Indexed as

Gene Expression Regulation, DevelopmentalAnaerobiosisAnimalsCell CycleDigestive SystemGlycerolGlycoproteinsMembrane GlycoproteinsProtozoan ProteinsTranscription, GeneticTransfectionTrypanosoma brucei bruceiTsetse FliesEP procyclin protein, Trypanosoma bruceiGlycerolGlycoproteinsGPEET protein, Trypanosoma bruceiMembrane GlycoproteinsProtozoan Proteins

Identifiers

PMID10716949
PMCPMC316419
OpenAlexW2140548987

What OpenQuestion holds

Textmetadata
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.