Trypanosoma cruzi transcriptome during axenic epimastigote growth curve
BACKGROUND Trypanosoma cruzi is an important protozoan parasite and the causative agent of Chagas disease. A critical step in understanding T. cruzi biology is the study of cellular and molecular features exhibited during its growth curve. OBJECTIVES We aimed to acquire a global view of the gene e...
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Instituto Oswaldo Cruz, Ministério da Saúde
2018-04-01
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doaj-3b6ca238e5ed46cc860df9aa374fafdb2020-11-24T23:08:32ZengInstituto Oswaldo Cruz, Ministério da SaúdeMemórias do Instituto Oswaldo Cruz.1678-80602018-04-01113510.1590/0074-02760170404S0074-02762018000500305Trypanosoma cruzi transcriptome during axenic epimastigote growth curveCyndia Mara Bezerra dos SantosAdriana LudwigRafael Luis KesslerRita de Cássia Pontello RampazzoAlexandre Haruo InoueMarco Aurélio KriegerDaniela Parada PavoniChristian Macagnan ProbstBACKGROUND Trypanosoma cruzi is an important protozoan parasite and the causative agent of Chagas disease. A critical step in understanding T. cruzi biology is the study of cellular and molecular features exhibited during its growth curve. OBJECTIVES We aimed to acquire a global view of the gene expression profile of T. cruzi during epimastigote growth. METHODS RNA-Seq analysis of total and polysomal/granular RNA fractions was performed along the 10 days T. cruzi epimastigote growth curve in vitro, in addition to cell viability and cell cycle analyses. We also analysed the polysome profile and investigated the presence of granular RNA by FISH and western blotting. FINDINGS We identified 1082 differentially expressed genes (DEGs), of which 220 were modulated in both fractions. According to the modulation pattern, DEGs were grouped into 12 clusters and showed enrichment of important gene ontology (GO) terms. Moreover, we showed that by the sixth day of the growth curve, polysomal content declined greatly and the RNA granules content appeared to increase, suggesting that a portion of mRNAs isolated from the sucrose gradient during late growth stages was associated with RNA granules and not only polyribosomes. Furthermore, we discuss several modulated genes possibly involved in T. cruzi growth, mainly during the stationary phase, such as genes related to cell cycle, pathogenesis, metabolic processes and RNA-binding proteins.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762018000500305&lng=en&tlng=enChagas diseasegrowth curvetranscriptomicsRNA-SeqpolysomesRNA granules |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Cyndia Mara Bezerra dos Santos Adriana Ludwig Rafael Luis Kessler Rita de Cássia Pontello Rampazzo Alexandre Haruo Inoue Marco Aurélio Krieger Daniela Parada Pavoni Christian Macagnan Probst |
spellingShingle |
Cyndia Mara Bezerra dos Santos Adriana Ludwig Rafael Luis Kessler Rita de Cássia Pontello Rampazzo Alexandre Haruo Inoue Marco Aurélio Krieger Daniela Parada Pavoni Christian Macagnan Probst Trypanosoma cruzi transcriptome during axenic epimastigote growth curve Memórias do Instituto Oswaldo Cruz. Chagas disease growth curve transcriptomics RNA-Seq polysomes RNA granules |
author_facet |
Cyndia Mara Bezerra dos Santos Adriana Ludwig Rafael Luis Kessler Rita de Cássia Pontello Rampazzo Alexandre Haruo Inoue Marco Aurélio Krieger Daniela Parada Pavoni Christian Macagnan Probst |
author_sort |
Cyndia Mara Bezerra dos Santos |
title |
Trypanosoma cruzi transcriptome during axenic epimastigote growth curve |
title_short |
Trypanosoma cruzi transcriptome during axenic epimastigote growth curve |
title_full |
Trypanosoma cruzi transcriptome during axenic epimastigote growth curve |
title_fullStr |
Trypanosoma cruzi transcriptome during axenic epimastigote growth curve |
title_full_unstemmed |
Trypanosoma cruzi transcriptome during axenic epimastigote growth curve |
title_sort |
trypanosoma cruzi transcriptome during axenic epimastigote growth curve |
publisher |
Instituto Oswaldo Cruz, Ministério da Saúde |
series |
Memórias do Instituto Oswaldo Cruz. |
issn |
1678-8060 |
publishDate |
2018-04-01 |
description |
BACKGROUND Trypanosoma cruzi is an important protozoan parasite and the causative agent of Chagas disease. A critical step in understanding T. cruzi biology is the study of cellular and molecular features exhibited during its growth curve. OBJECTIVES We aimed to acquire a global view of the gene expression profile of T. cruzi during epimastigote growth. METHODS RNA-Seq analysis of total and polysomal/granular RNA fractions was performed along the 10 days T. cruzi epimastigote growth curve in vitro, in addition to cell viability and cell cycle analyses. We also analysed the polysome profile and investigated the presence of granular RNA by FISH and western blotting. FINDINGS We identified 1082 differentially expressed genes (DEGs), of which 220 were modulated in both fractions. According to the modulation pattern, DEGs were grouped into 12 clusters and showed enrichment of important gene ontology (GO) terms. Moreover, we showed that by the sixth day of the growth curve, polysomal content declined greatly and the RNA granules content appeared to increase, suggesting that a portion of mRNAs isolated from the sucrose gradient during late growth stages was associated with RNA granules and not only polyribosomes. Furthermore, we discuss several modulated genes possibly involved in T. cruzi growth, mainly during the stationary phase, such as genes related to cell cycle, pathogenesis, metabolic processes and RNA-binding proteins. |
topic |
Chagas disease growth curve transcriptomics RNA-Seq polysomes RNA granules |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0074-02762018000500305&lng=en&tlng=en |
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