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Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.12008/22603 How to cite
Title: Transcriptomic analysis reveals metabolic switches and surface remodeling as key processes for stage transition in Trypanosoma cruzi
Authors: Berná, Luisa
Chiribao, María Laura
Greif, Gonzalo
Rodríguez Esquibel, Matías Daniel
Álvarez-Valín, Fernando
Robello Porto, Carlos
Type: Artículo
Keywords: Chagas disease, Metabolic regulation, Trypanosoma cruzi, Surface proteins, RNA-seq
Issue Date: 2017
Abstract: American trypanosomiasis is a chronic and endemic disease which affects millions of people. Trypanosoma cruzi, its causative agent, has a life cycle that involves complex morphological and functional transitions, as well as a variety of environmental conditions. This requires a tight regulation of gene expression, which is achieved mainly by post-transcriptional regulation. In this work we conducted an RNAseq analysis of the three major life cycle stages of T. cruzi, amastigotes, epimastigotes and trypomastigotes. This analysis allowed us to delineate specific transcriptomic profiling for each stage, and also to identify those biological processes of major relevance in each state. Stage specific expression profiling evidenced the plasticity of T. cruzi to adapt quickly to different conditions, with particular focus on membrane remodeling and metabolic shifts along the life cycle. Epimastigotes, which replicate in the gut of insect vector, showed higher expression of genes related to energy metabolism, mainly Krebs cycle, respiratory chain and oxidative phosphorylation related genes, and anabolism related genes associated to nucleotide and steroid biosynthesis; also a general down-regulation of surface glycoproteins was seen at this stage. Trypomastigotes, living extracellularly in the bloodstream of mammals, express a plethora of surface proteins and signaling genes involved in invasion and evasion of immune response. Amastigotes mostly express membrane transporters and genes involved in regulation of cell cycle, an also express a specific subset of surface glycoproteins coding genes. In addition, these results allowed us to improve the annotation of Dm28c genome, identifying new ORFs and set the stage for construction of networks of co-expression, which can give clues about coded proteins of unknown functions
Publisher: PeerJ Inc
IN: PeerJ, 2017, (3) e3017
DOI: 10.7717/peerj.3017
ISSN: 2167-8359
Citation: Berná, L., Chiribao, M.L., Greif, G., y otros. "Transcriptomic analysis reveals metabolic switches and surface remodeling as key processes for stage transition in Trypanosoma cruz". PeerJ [en línea]. 2017 (3) e3017. doi: 10.7717/peerj.3017
License: Licencia Creative Commons Atribución (CC - By 4.0)
Appears in Collections:Publicaciones académicas y científicas - Facultad de Ciencias

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