Polysome profiling reveals translational control of gene expression in the human malaria parasite Plasmodium falciparum - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Accéder directement au contenu
Article Dans Une Revue Genome Biology Année : 2013

Polysome profiling reveals translational control of gene expression in the human malaria parasite Plasmodium falciparum

Résumé

Background In eukaryotic organisms, gene expression is regulated at multiple levels during the processes of transcription and translation. The absence of a tight regulatory network for transcription in the human malaria parasite suggests that gene expression may largely be controlled at post-transcriptional and translational levels. Results In this study, we compare steady-state mRNA and polysome-associated mRNA levels of Plasmodium falciparum at different time points during its asexual cell cycle. For more than 30% of its genes, we observe a delay in peak transcript abundance in the polysomal fraction as compared to the steady-state mRNA fraction, suggestive of strong translational control. Our data show that key regulatory mechanisms could include inhibitory activity of upstream open reading frames and translational repression of the major virulence gene family by intronic transcripts. In addition, we observe polysomal mRNA-specific alternative splicing events and widespread transcription of non-coding transcripts. Conclusions These different layers of translational regulation are likely to contribute to a complex network that controls gene expression in this eukaryotic pathogen. Disrupting the mechanisms involved in such translational control could provide novel anti-malarial strategies.
Fichier principal
Vignette du fichier
ponts3_1.pdf (1.86 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte
Loading...

Dates et versions

hal-02650201 , version 1 (29-05-2020)

Identifiants

Citer

Evelien M. Bunnik, Duk-Won Doug Chung, Michael Hamilton, Nadia Ponts, Anita Saraf, et al.. Polysome profiling reveals translational control of gene expression in the human malaria parasite Plasmodium falciparum. Genome Biology, 2013, 14 (11), 18 p. ⟨10.1186/gb-2013-14-11-r128⟩. ⟨hal-02650201⟩

Collections

INRA INRAE MYCSA
11 Consultations
24 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More