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Bonilauri B, Ribeiro AL, Spangenberg L, Dallagiovanna B. Unveiling Polysomal Long Non-Coding RNA Expression on the First Day of Adipogenesis and Osteogenesis in Human Adipose-Derived Stem Cells. Int J Mol Sci 2024; 25:2013. [PMID: 38396700 PMCID: PMC10888724 DOI: 10.3390/ijms25042013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 01/06/2024] [Accepted: 01/11/2024] [Indexed: 02/25/2024] Open
Abstract
Understanding the intricate molecular mechanisms governing the fate of human adipose-derived stem cells (hASCs) is essential for elucidating the delicate balance between adipogenic and osteogenic differentiation in both healthy and pathological conditions. Long non-coding RNAs (lncRNAs) have emerged as key regulators involved in lineage commitment and differentiation of stem cells, operating at various levels of gene regulation, including transcriptional, post-transcriptional, and post-translational processes. To gain deeper insights into the role of lncRNAs' in hASCs' differentiation, we conducted a comprehensive analysis of the lncRNA transcriptome (RNA-seq) and translatome (polysomal-RNA-seq) during a 24 h period of adipogenesis and osteogenesis. Our findings revealed distinct expression patterns between the transcriptome and translatome during both differentiation processes, highlighting 90 lncRNAs that are exclusively regulated in the polysomal fraction. These findings underscore the significance of investigating lncRNAs associated with ribosomes, considering their unique expression patterns and potential mechanisms of action, such as translational regulation and potential coding capacity for microproteins. Additionally, we identified specific lncRNA gene expression programs associated with adipogenesis and osteogenesis during the early stages of cell differentiation. By shedding light on the expression and potential functions of these polysome-associated lncRNAs, we aim to deepen our understanding of their involvement in the regulation of adipogenic and osteogenic differentiation, ultimately paving the way for novel therapeutic strategies and insights into regenerative medicine.
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Affiliation(s)
- Bernardo Bonilauri
- Stem Cell Basic Biology Laboratory (LABCET), Carlos Chagas Institute—Fiocruz/PR, Curitiba 81350-010, PR, Brazil;
- Stanford Cardiovascular Institute, Stanford University School of Medicine, Stanford, CA 94305, USA
| | - Annanda Lyra Ribeiro
- Stem Cell Basic Biology Laboratory (LABCET), Carlos Chagas Institute—Fiocruz/PR, Curitiba 81350-010, PR, Brazil;
| | - Lucía Spangenberg
- Bioinformatics Unit, Institut Pasteur de Montevideo, Montevideo 11400, Uruguay;
| | - Bruno Dallagiovanna
- Stem Cell Basic Biology Laboratory (LABCET), Carlos Chagas Institute—Fiocruz/PR, Curitiba 81350-010, PR, Brazil;
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Hansel-Frose AFF, Allmer J, Friedrichs M, dos Santos HG, Dallagiovanna B, Spangenberg L. Alternative polyadenylation and dynamic 3' UTR length is associated with polysome recruitment throughout the cardiomyogenic differentiation of hESCs. Front Mol Biosci 2024; 11:1336336. [PMID: 38380430 PMCID: PMC10877728 DOI: 10.3389/fmolb.2024.1336336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 01/11/2024] [Indexed: 02/22/2024] Open
Abstract
Alternative polyadenylation (APA) increases transcript diversity through the generation of isoforms with varying 3' untranslated region (3' UTR) lengths. As the 3' UTR harbors regulatory element target sites, such as miRNAs or RNA-binding proteins, changes in this region can impact post-transcriptional regulation and translation. Moreover, the APA landscape can change based on the cell type, cell state, or condition. Given that APA events can impact protein expression, investigating translational control is crucial for comprehending the overall cellular regulation process. Revisiting data from polysome profiling followed by RNA sequencing, we investigated the cardiomyogenic differentiation of pluripotent stem cells by identifying the transcripts that show dynamic 3' UTR lengthening or shortening, which are being actively recruited to ribosome complexes. Our findings indicate that dynamic 3' UTR lengthening is not exclusively associated with differential expression during cardiomyogenesis but rather with recruitment to polysomes. We confirm that the differentiated state of cardiomyocytes shows a preference for shorter 3' UTR in comparison to the pluripotent stage although preferences vary during the days of the differentiation process. The most distinct regulatory changes are seen in day 4 of differentiation, which is the mesoderm commitment time point of cardiomyogenesis. After identifying the miRNAs that would target specifically the alternative 3' UTR region of the isoforms, we constructed a gene regulatory network for the cardiomyogenesis process, in which genes related to the cell cycle were identified. Altogether, our work sheds light on the regulation and dynamic 3' UTR changes of polysome-recruited transcripts that take place during the cardiomyogenic differentiation of pluripotent stem cells.
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Affiliation(s)
- Aruana F. F. Hansel-Frose
- Laboratory of Basic Stem Cell Biology, Carlos Chagas Institute, Oswaldo Cruz Foundation (FIOCRUZ/PR), Curitiba, Brazil
| | - Jens Allmer
- Department of Medical Informatics and Bioinformatics, University of Applied Sciences Ruhr West, Mülheim, Germany
| | - Marcel Friedrichs
- Bioinformatics and Medical Informatics Department, University of Bielefeld, Bielefeld, Germany
| | | | - Bruno Dallagiovanna
- Laboratory of Basic Stem Cell Biology, Carlos Chagas Institute, Oswaldo Cruz Foundation (FIOCRUZ/PR), Curitiba, Brazil
| | - Lucía Spangenberg
- Bioinformatics Unit, Pasteur Institute of Montevideo, Montevideo, Uruguay
- Departamento Basico de Medicina, Hospital de Clinicas, Universidad de la República (Udelar), Montevideo, Uruguay
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Machado HC, Bispo S, Dallagiovanna B. miR-6087 Might Regulate Cell Cycle–Related mRNAs During Cardiomyogenesis of hESCs. Bioinform Biol Insights 2023; 17:11779322231161918. [PMID: 37020502 PMCID: PMC10069004 DOI: 10.1177/11779322231161918] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 02/16/2023] [Indexed: 04/03/2023] Open
Abstract
MicroRNAs (miRNAs) are small noncoding RNAs that act as negative regulators of gene expression at the post-transcriptional level, promoting mRNA degradation or translation repression. Despite the well-described presence of miRNAs in various human tissues, there is still a lack of information about the relationship between miRNAs and the translation regulation in human embryonic stem cells (hESCs) during cardiomyogenesis. Here, we investigate RNA-seq data from hESCs, focusing on distinct stages of cardiomyogenesis and searching for polysome-bound miRNAs that could be involved in translational regulation. We identify miR-6087 as a differentially expressed miRNA at latest steps of cardiomyocyte differentiation. We analyzed the coexpression pattern between the differentially expressed mRNAs and miR-6087, evaluating whether they are predicted targets of the miRNA. We arranged the genes into an interaction network and identified BLM, RFC4, RFC3, and CCNA2 as key genes of the network. A post hoc analysis of the key genes suggests that miR-6087 could act as a regulator of the cell cycle in hESC during cardiomyogenesis.
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Affiliation(s)
- Hellen Cristine Machado
- Laboratory of Basic Stem-Cell Biology,
Instituto Carlos Chagas – FIOCRUZ-PR, Curitiba, Brazil
| | - Saloe Bispo
- Laboratory of Molecular and Systems
Biology of Trypanosomatids, Instituto Carlos Chagas – FIOCRUZ-PR, Curitiba,
Brazil
| | - Bruno Dallagiovanna
- Laboratory of Basic Stem-Cell Biology,
Instituto Carlos Chagas – FIOCRUZ-PR, Curitiba, Brazil
- Bruno Dallagiovanna, Laboratory of Basic
Stem-Cell Biology, Instituto Carlos Chagas – FIOCRUZ-PR, Rua Professor Algacyr
Munhoz Mader, 3775, Curitiba 81350-010, Brazil.
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Feronato SG, Silva MLM, Izbicki R, Farias TDJ, Shigunov P, Dallagiovanna B, Passetti F, dos Santos HG. Selecting Genetic Variants and Interactions Associated with Amyotrophic Lateral Sclerosis: A Group LASSO Approach. J Pers Med 2022; 12:jpm12081330. [PMID: 36013279 PMCID: PMC9410070 DOI: 10.3390/jpm12081330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2022] [Revised: 08/10/2022] [Accepted: 08/12/2022] [Indexed: 11/16/2022] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a multi-system neurodegenerative disease that affects both upper and lower motor neurons, resulting from a combination of genetic, environmental, and lifestyle factors. Usually, the association between single-nucleotide polymorphisms (SNPs) and this disease is tested individually, which leads to the testing of multiple hypotheses. In addition, this classical approach does not support the detection of interaction-dependent SNPs. We applied a two-step procedure to select SNPs and pairwise interactions associated with ALS. SNP data from 276 ALS patients and 268 controls were analyzed by a two-step group LASSO in 2000 iterations. In the first step, we fitted a group LASSO model to a bootstrap sample and a random subset of predictors (25%) from the original data set aiming to screen for important SNPs and, in the second step, we fitted a hierarchical group LASSO model to evaluate pairwise interactions. An in silico analysis was performed on a set of variables, which were prioritized according to their bootstrap selection frequency. We identified seven SNPs (rs16984239, rs10459680, rs1436918, rs1037666, rs4552942, rs10773543, and rs2241493) and two pairwise interactions (rs16984239:rs2118657 and rs16984239:rs3172469) potentially involved in nervous system conservation and function. These results may contribute to the understanding of ALS pathogenesis, its diagnosis, and therapeutic strategy improvement.
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Affiliation(s)
| | | | - Rafael Izbicki
- Department of Statistics, Universidade Federal de São Carlos, São Carlos 13565-905, Brazil
| | - Ticiana D. J. Farias
- Instituto Carlos Chagas, Fundação Oswaldo Cruz, Curitiba 81310-020, Brazil
- Division of Biomedical Informatics, Department of Immunology and Microbiology, University of Colorado School of Medicine, Aurora, CO 80045, USA
| | - Patrícia Shigunov
- Instituto Carlos Chagas, Fundação Oswaldo Cruz, Curitiba 81310-020, Brazil
| | | | - Fabio Passetti
- Instituto Carlos Chagas, Fundação Oswaldo Cruz, Curitiba 81310-020, Brazil
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Bonilauri B, Dallagiovanna B. Microproteins in skeletal muscle: hidden keys in muscle physiology. J Cachexia Sarcopenia Muscle 2022; 13:100-113. [PMID: 34850602 PMCID: PMC8818594 DOI: 10.1002/jcsm.12866] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 10/01/2021] [Accepted: 10/12/2021] [Indexed: 11/10/2022] Open
Abstract
Recent advances in the transcriptomics, translatomics, and proteomics have led us to the exciting new world of functional endogenous microproteins. These microproteins have a small size and are derived from small open reading frames (smORFs) of RNAs previously annotated as non-coding (e.g. lncRNAs and circRNAs) as well as from untranslated regions and canonical mRNAs. The presence of these microproteins reveals a much larger translatable portion of the genome, shifting previously defined dogmas and paradigms. These findings affect our view of organisms as a whole, including skeletal muscle tissue. Emerging evidence demonstrates that several smORF-derived microproteins play crucial roles during muscle development (myogenesis), maintenance, and regeneration, as well as lipid and glucose metabolism and skeletal muscle bioenergetics. These microproteins are also involved in processes including physical activity capacity, cellular stress, and muscular-related diseases (i.e. myopathy, cachexia, atrophy, and muscle wasting). Given the role of these small proteins as important key regulators of several skeletal muscle processes, there are rich prospects for the discovery of new microproteins and possible therapies using synthetic microproteins.
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Affiliation(s)
- Bernardo Bonilauri
- Laboratory of Basic Biology of Stem Cells (LABCET), Carlos Chagas Institute - Fiocruz-PR, Curitiba, Paraná, Brazil
| | - Bruno Dallagiovanna
- Laboratory of Basic Biology of Stem Cells (LABCET), Carlos Chagas Institute - Fiocruz-PR, Curitiba, Paraná, Brazil
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Oliveira MM, Schemberger MO, Suzukawa AA, Riediger IN, do Carmo Debur M, Becker G, Resende PC, Gräf T, Balsanelli E, de Baura VA, de Souza EM, Pedrosa FO, Alves LR, Blanes L, Nardelli SC, Aguiar AM, Albrecht L, Zanette D, Ávila AR, Morello LG, Marchini FK, Dos Santos HG, Passetti F, Dallagiovanna B, Faoro H. Re-emergence of Gamma-like-II and emergence of Gamma-S:E661D SARS-CoV-2 lineages in the south of Brazil after the 2021 outbreak. Virol J 2021; 18:222. [PMID: 34789293 PMCID: PMC8596384 DOI: 10.1186/s12985-021-01690-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2021] [Accepted: 11/01/2021] [Indexed: 01/19/2023] Open
Abstract
BACKGROUND We report a genomic surveillance of SARS-CoV-2 lineages circulating in Paraná, southern Brazil, from March 2020 to April 2021. Our analysis, based on 333 genomes, revealed that the first variants detected in the state of Paraná in March 2020 were the B.1.1.33 and B.1.1.28 variants. The variants B.1.1.28 and B.1.1.33 were predominant throughout 2020 until the introduction of the variant P.2 in August 2020 and a variant of concern (VOC), Gamma (P.1), in January 2021. The VOC Gamma, a ramification of the B.1.1.28 lineage first detected in Manaus (northern Brazil), has grown rapidly since December 2020 and was thought to be responsible for the deadly second wave of COVID-19 throughout Brazil. METHODS The 333 genomic sequences of SARS-CoV-2 from March 2020 to April 2021 were generated as part of the genomic surveillance carried out by Fiocruz in Brazil Genomahcov Fiocruz. SARS-CoV-2 sequencing was performed using representative samples from all geographic areas of Paraná. Phylogenetic analyses were performed using the 333 genomes also included other SARS-CoV-2 genomes from the state of Paraná and other states in Brazil that were deposited in the GISAID. In addition, the time-scaled phylogenetic tree was constructed with up to 3 random sequences of the Gamma variant from each state in Brazil in each month of 2021. In this analysis we also added the sequences identified as the B.1.1.28 lineage of the Amazonas state and and the Gamma-like-II (P.1-like-II) lineage identified in different regions of Brazil. RESULTS Phylogenetic analyses of the SARS-CoV-2 genomes that were previously classified as the VOC Gamma lineage by WHO/PANGO showed that some genomes from February to April 2021 branched in a monophyletic clade and that these samples grouped together with genomes recently described with the lineage Gamma-like-II. Additionally, a new mutation (E661D) in the spike (S) protein has been identified in nearly 10% of the genomes classified as the VOC Gamma from Paraná in March and April 2021.Finally, we analyzed the correlation between the lineage and the Gamma variant frequency, age group (patients younger or older than 60 years old) and the clinical data of 86 cases from the state of Paraná. CONCLUSIONS Our results provided a reliable picture of the evolution of the SARS-CoV-2 pandemic in the state of Paraná characterized by the dominance of the Gamma strain, as well as a high frequencies of the Gamma-like-II lineage and the S:E661D mutation. Epidemiological and genomic surveillance efforts should be continued to unveil the biological relevance of the novel mutations detected in the VOC Gamma in Paraná.
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Affiliation(s)
- Mauro M Oliveira
- Laboratório de Ciências e Tecnologias Aplicadas Em Saúde, Instituto Carlos Chagas, FIOCRUZ, Curitiba, Paraná, Brazil
| | - Michelle O Schemberger
- Laboratório de Ciências e Tecnologias Aplicadas Em Saúde, Instituto Carlos Chagas, FIOCRUZ, Curitiba, Paraná, Brazil
| | - Andreia A Suzukawa
- Laboratório de Biologia Básica de Células Tronco, Instituto Carlos Chagas, FIOCRUZ, Curitiba, Paraná, Brazil
| | - Irina N Riediger
- Laboratório Central do Estado do Paraná, LACEN, Curitiba, Paraná, Brazil
| | | | - Guilherme Becker
- Laboratório Central do Estado do Paraná, LACEN, Curitiba, Paraná, Brazil
| | - Paola Cristina Resende
- Laboratórios de Vírus Respiratórios e do Sarampo (LVRS), Instituto Oswaldo Cruz, FIOCRUZ, Rio de Janeiro, Rio de Janeiro, Brazil
| | - Tiago Gräf
- Instituto Gonçalo Moniz, FIOCRUZ, Salvador, Bahia, Brazil
| | - Eduardo Balsanelli
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal Do Paraná, Curitiba, Paraná, Brazil
| | - Valter Antônio de Baura
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal Do Paraná, Curitiba, Paraná, Brazil
| | - Emanuel M de Souza
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal Do Paraná, Curitiba, Paraná, Brazil
| | - Fábio O Pedrosa
- Departamento de Bioquímica e Biologia Molecular, Universidade Federal Do Paraná, Curitiba, Paraná, Brazil
| | - Lysangela R Alves
- Laboratório de Regulação da Expressão Gênica, Instituto Carlos Chagas, FIOCRUZ, Curitiba, Paraná, Brazil
| | - Lucas Blanes
- Laboratório de Ciências e Tecnologias Aplicadas Em Saúde, Instituto Carlos Chagas, FIOCRUZ, Curitiba, Paraná, Brazil
| | - Sheila Cristina Nardelli
- Laboratório de Pesquisa em Apicomplexa, Carlos Chagas Institute, FIOCRUZ, Curitiba, Paraná, Brazil
| | - Alessandra M Aguiar
- Laboratório de Biologia Básica de Células Tronco, Instituto Carlos Chagas, FIOCRUZ, Curitiba, Paraná, Brazil
| | - Letusa Albrecht
- Laboratório de Pesquisa em Apicomplexa, Carlos Chagas Institute, FIOCRUZ, Curitiba, Paraná, Brazil
| | - Dalila Zanette
- Laboratório de Ciências e Tecnologias Aplicadas Em Saúde, Instituto Carlos Chagas, FIOCRUZ, Curitiba, Paraná, Brazil
| | - Andréa R Ávila
- Laboratório de Pesquisa em Apicomplexa, Carlos Chagas Institute, FIOCRUZ, Curitiba, Paraná, Brazil
| | - Luis Gustavo Morello
- Laboratório de Ciências e Tecnologias Aplicadas Em Saúde, Instituto Carlos Chagas, FIOCRUZ, Curitiba, Paraná, Brazil
| | - Fabricio K Marchini
- Laboratório de Ciências e Tecnologias Aplicadas Em Saúde, Instituto Carlos Chagas, FIOCRUZ, Curitiba, Paraná, Brazil
| | | | - Fabio Passetti
- Laboratório de Regulação da Expressão Gênica, Instituto Carlos Chagas, FIOCRUZ, Curitiba, Paraná, Brazil
| | - Bruno Dallagiovanna
- Laboratório de Biologia Básica de Células Tronco, Instituto Carlos Chagas, FIOCRUZ, Curitiba, Paraná, Brazil
| | - Helisson Faoro
- Laboratório de Ciências e Tecnologias Aplicadas Em Saúde, Instituto Carlos Chagas, FIOCRUZ, Curitiba, Paraná, Brazil.
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7
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Abud APR, Paschoal ACC, Kuligovski C, Caruso RRB, Dallagiovanna B, de Aguiar AM. Using inhibition of the adipogenesis of adipose-derived stem cells in vitro for toxicity prediction. MethodsX 2021; 8:101515. [PMID: 34754786 PMCID: PMC8564732 DOI: 10.1016/j.mex.2021.101515] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Accepted: 09/13/2021] [Indexed: 11/24/2022] Open
Abstract
In vitro stem cell models are used as alternatives to animal models and are important tools for cytotoxicity studies. Researchers can determine the effects of test substances on human cells by evaluating cell viability and differentiation. Here, we describe an in vitro model to quantify adipogenesis based on the Nile red staining of specific lipid droplets and the emission of basic lipids from human adipose tissue-derived mesenchymal stromal cells (AD-MSCs) in the presence of test substances. This assay allows for the prediction of toxicity based on the inhibition of adipogenesis in vitro in a 96-well format. The differentiation of a progenitor cell into a specialized cell, the adipocyte, is easy to monitor and quantify, making this a simple assay. The fluorescence staining of nuclei and lipid droplets is measured after 14 days of cell differentiation to determine cell number and assess cell differentiation using high-content imaging analysis, thus allowing for the identification of chemicals that impact differentiation. We also describe a protocol to assess adipocyte differentiation by fluorescence intensity using a multiplate reader.Researchers can utilize the protocol described here for many purposes to evaluate in vitro adipogenesis. With this method, it is possible to reduce the use of animals.
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Affiliation(s)
- Ana Paula Ressetti Abud
- Rede de Plataformas Tecnológicas FIOCRUZ - Bioensaios com Métodos alternativos em Citotoxicidade, Rua Professor Algacyr Munhoz Mader, 3775, Instituto Carlos Chagas, FIOCRUZ Paraná, Curitiba, PR 81350-010, Brazil
| | - Ariane Caroline Campos Paschoal
- Laboratório de Biologia Básica de Células-Tronco, Rua Professor Algacyr Munhoz Mader, 3775, Instituto Carlos Chagas, FIOCRUZ Paraná, Curitiba, PR 81350-010, Brazil.,Grupo Boticário, Pesquisa and Desenvolvimento, Avenida Rui Barbosa, 4110, São José dos Pinhais, PR 83055-320, Brazil
| | - Crisciele Kuligovski
- Laboratório de Biologia Básica de Células-Tronco, Rua Professor Algacyr Munhoz Mader, 3775, Instituto Carlos Chagas, FIOCRUZ Paraná, Curitiba, PR 81350-010, Brazil
| | - Rodrigo Rêgo Barros Caruso
- Laboratório de Ciências e Tecnologias Aplicadas à Saúde, Rua Professor Algacyr Munhoz Mader, 3775, Instituto Carlos Chagas, FIOCRUZ Paraná, Curitiba, PR 81350-010, Brazil.,Current Address: Laboratório de Biologia Molecular e Sistêmica de Tripanossomatídeos. Rua Professor Algacyr Munhoz Mader, 3775, Instituto Carlos Chagas, FIOCRUZ Paraná, Curitiba, PR 81350-010, Brazil
| | - Bruno Dallagiovanna
- Laboratório de Biologia Básica de Células-Tronco, Rua Professor Algacyr Munhoz Mader, 3775, Instituto Carlos Chagas, FIOCRUZ Paraná, Curitiba, PR 81350-010, Brazil
| | - Alessandra Melo de Aguiar
- Rede de Plataformas Tecnológicas FIOCRUZ - Bioensaios com Métodos alternativos em Citotoxicidade, Rua Professor Algacyr Munhoz Mader, 3775, Instituto Carlos Chagas, FIOCRUZ Paraná, Curitiba, PR 81350-010, Brazil.,Laboratório de Biologia Básica de Células-Tronco, Rua Professor Algacyr Munhoz Mader, 3775, Instituto Carlos Chagas, FIOCRUZ Paraná, Curitiba, PR 81350-010, Brazil
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Gomes-Júnior R, Shigunov P, Dallagiovanna B, Pereira IT. Accessing the Human Pluripotent Stem Cell Translatome by Polysome Profiling. Methods Mol Biol 2021; 2520:309-319. [PMID: 34611819 DOI: 10.1007/7651_2021_437] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Polysome profiling is a technique that uses sucrose density gradient ultracentrifugation to separate complexes of mRNAs associated with one or more ribosomes. Here we describe polysome profiling analysis in human pluripotent stem cells (hPSCs) using a continuous ultraviolet spectrophotometer and a gradient fractionator. We provide protocols for processing sucrose gradient fractions for isolation of RNA for RT-qPCR or large-scale sequencing analysis, used to establish the translational status of specific mRNAs and identify the role of noncoding RNA in translation.
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Barisón MJ, Pereira IT, Waloski Robert A, Dallagiovanna B. Reorganization of Metabolism during Cardiomyogenesis Implies Time-Specific Signaling Pathway Regulation. Int J Mol Sci 2021; 22:1330. [PMID: 33572750 PMCID: PMC7869011 DOI: 10.3390/ijms22031330] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 01/06/2021] [Accepted: 01/08/2021] [Indexed: 11/17/2022] Open
Abstract
Understanding the cell differentiation process involves the characterization of signaling and regulatory pathways. The coordinated action involved in multilevel regulation determines the commitment of stem cells and their differentiation into a specific cell lineage. Cellular metabolism plays a relevant role in modulating the expression of genes, which act as sensors of the extra-and intracellular environment. In this work, we analyzed mRNAs associated with polysomes by focusing on the expression profile of metabolism-related genes during the cardiac differentiation of human embryonic stem cells (hESCs). We compared different time points during cardiac differentiation (pluripotency, embryoid body aggregation, cardiac mesoderm, cardiac progenitor and cardiomyocyte) and showed the immature cell profile of energy metabolism. Highly regulated canonical pathways are thoroughly discussed, such as those involved in metabolic signaling and lipid homeostasis. We reveal the critical relevance of retinoic X receptor (RXR) heterodimers in upstream retinoic acid metabolism and their relationship with thyroid hormone signaling. Additionally, we highlight the importance of lipid homeostasis and extracellular matrix component biosynthesis during cardiomyogenesis, providing new insights into how hESCs reorganize their metabolism during in vitro cardiac differentiation.
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Affiliation(s)
| | | | | | - Bruno Dallagiovanna
- Basic Stem Cell Biology Laboratory, Instituto Carlos Chagas-FIOCRUZ-PR, Rua Professor Algacyr Munhoz Mader, 3775, Curitiba, PR 81350-010, Brazil; (M.J.B.); (I.T.P.); (A.W.R.)
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10
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Horinouchi CDS, Barisón MJ, Robert AW, Kuligovski C, Aguiar AM, Dallagiovanna B. Influence of donor age on the differentiation and division capacity of human adipose-derived stem cells. World J Stem Cells 2020; 12:1640-1651. [PMID: 33505605 PMCID: PMC7789122 DOI: 10.4252/wjsc.v12.i12.1640] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 10/09/2020] [Accepted: 11/05/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Human adipose-derived stromal/stem cells (hASCs) are one of the most useful types of mesenchymal stromal/stem cells, which are adult multipotent cells with great therapeutic potential for the treatment of several diseases. However, for successful clinical application, it is critical that high-quality cells can be obtained. Diverse factors seem to be able to influence cell quality and performance, especially factors related to donors’ intrinsic characteristics, such as age. Nevertheless, there is no consensus regarding this characteristic, and there is conflicting information in the literature.
AIM To investigate the growth kinetics and differentiation potential of adipose-derived stem cells isolated from the lipoaspirates of elderly and young donors.
METHODS hASCs were harvested from liposuctioned adipose tissue obtained from female donors (aged 20-70 years). Cells were distributed into two groups according to age range: old hASCs (oASCs, ≥ 55 years, n = 9) and young hASCs (yASCs, ≤ 35 years, n = 9). For each group, immunophenotypic characterization was performed by flow cytometry. Population doubling time was assessed over seven days. For adipogenic potential evaluation, lipid deposits were assessed after 7 d, 14 d and 21 d of adipogenic induction. Osteogenic potential was verified by analyzing cell mineralization after 14 d, 21 d and 28 d of osteogenic induction. mRNA expression of PPARγ2, CEBPA and Runx2 were detected by quantitative reverse transcription polymerase chain reaction.
RESULTS hASCs were successfully obtained, cultured, and grouped according to their age: yASCs (26.33 ± 4.66 years old) and oASCs (64.78 ± 4.58 years old). After maintenance of the cells in culture, there were no differences in morphology between cells from the young and old donors. Additionally, both groups showed classical immunophenotypic characteristics of mesenchymal stem/stromal cells. The average doubling time indicated that yASCs (4.09 ± 0.94 d) did not significantly differ from oASCs (4.19 ± 1.29 d). Concerning differentiation potential, after adipogenic and osteogenic induction, yASCs and oASCs were able to differentiate to greater levels than the noninduced control cells. However, no differences were found in the differentiation efficiency of yASCs and oASCs in adipogenesis or osteogenesis. Additionally, the mRNA expression of PPARγ2, CEBPA and Runx2 were similar in yASCs and oASCs.
CONCLUSION Our findings suggest that age does not seem to significantly affect the cell division or adipogenic or osteogenic differentiation ability of adipose-derived stem cells isolated from lipoaspirates.
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Affiliation(s)
- Cintia DS Horinouchi
- Stem Cells Basic Biology Laboratory, Instituto Carlos Chagas, Curitiba 81350010, Paraná, Brazil
| | - María Julia Barisón
- Stem Cells Basic Biology Laboratory, Instituto Carlos Chagas, Curitiba 81350010, Paraná, Brazil
| | - Anny W Robert
- Stem Cells Basic Biology Laboratory, Instituto Carlos Chagas, Curitiba 81350010, Paraná, Brazil
| | - Crisciele Kuligovski
- Stem Cells Basic Biology Laboratory, Instituto Carlos Chagas, Curitiba 81350010, Paraná, Brazil
| | - Alessandra M Aguiar
- Stem Cells Basic Biology Laboratory, Instituto Carlos Chagas, Curitiba 81350010, Paraná, Brazil
| | - Bruno Dallagiovanna
- Stem Cells Basic Biology Laboratory, Instituto Carlos Chagas, Curitiba 81350010, Paraná, Brazil
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11
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Bonilauri B, Dallagiovanna B. Linking long noncoding RNAs (lncRNAs) and doping detection. Drug Test Anal 2020; 13:1068-1071. [PMID: 33119947 DOI: 10.1002/dta.2952] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2020] [Revised: 10/15/2020] [Accepted: 10/18/2020] [Indexed: 12/21/2022]
Abstract
In the fight against doping, efficient methods for detecting substances or biomarkers are still being improved. Indirect methods are an interesting alternative for the detection of substances misuse longitudinally. Here we shed lights the long non-coding RNAs (lncRNAs) as a possible biomarkers due to their characteristics such as tissue-specific expression and strict regulation.
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Affiliation(s)
- Bernardo Bonilauri
- Laboratory of Basic Biology of Stem Cells (LABCET), Carlos Chagas Institute-FIOCRUZ-PR, Curitiba, Paraná, Brazil
| | - Bruno Dallagiovanna
- Laboratory of Basic Biology of Stem Cells (LABCET), Carlos Chagas Institute-FIOCRUZ-PR, Curitiba, Paraná, Brazil
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12
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Bonilauri B, Dallagiovanna B. Long Non-coding RNAs Are Differentially Expressed After Different Exercise Training Programs. Front Physiol 2020; 11:567614. [PMID: 33071823 PMCID: PMC7533564 DOI: 10.3389/fphys.2020.567614] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Accepted: 08/25/2020] [Indexed: 12/29/2022] Open
Abstract
Background Molecular regulation related to the health benefits of different exercise modes remains unclear. Long non-coding RNAs (lncRNAs) have emerged as an RNA class with regulatory functions in health and diseases. Here, we analyzed the expression of lncRNAs after different exercise training programs and their possible modes of action related to physical exercise adaptations. Methods Public high-throughput RNA-seq data (skeletal muscle biopsies) were downloaded, and bioinformatics analysis was performed. We primarily analyzed data reports of 12 weeks of resistance training (RT), high-intensity interval training (HIIT), and combined (CT) exercise training. In addition, we analyzed data from 8 weeks of endurance training (ET). Differential expression analysis of lncRNAs was performed, and an adjusted P-value < 0.1 and log2 (fold change) ≥0.5 or ≤-0.5 were set as the cutoff values to identify differentially expressed lncRNAs (DELs). Results We identified 204 DELs after 12 weeks of HIIT, 43 DELs after RT, and 15 DELs after CT. Moreover, 52 lncRNAs were differentially expressed after 8 weeks of ET. The lncRNA expression pattern after physical exercise was very specific, with distinct expression profiles for the different training programs, where few lncRNAs were common among the exercise types. LncRNAs may regulate molecular responses to exercise, such as collagen fibril organization, extracellular matrix organization, myoblast and plasma membrane fusion, skeletal muscle contraction, synaptic transmission, PI3K and TORC regulation, autophagy, and angiogenesis. Conclusion For the first time, we show that lncRNAs are differentially expressed in skeletal muscle after different physical exercise programs, and these lncRNAs may act in various biological processes related to physical activity adaptations.
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Affiliation(s)
- Bernardo Bonilauri
- Laboratory of Basic Biology of Stem Cells (LABCET), Carlos Chagas Institute - FIOCRUZ-PR, Curitiba, Brazil
| | - Bruno Dallagiovanna
- Laboratory of Basic Biology of Stem Cells (LABCET), Carlos Chagas Institute - FIOCRUZ-PR, Curitiba, Brazil
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13
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Robert AW, Marcon BH, Dallagiovanna B, Shigunov P. Adipogenesis, Osteogenesis, and Chondrogenesis of Human Mesenchymal Stem/Stromal Cells: A Comparative Transcriptome Approach. Front Cell Dev Biol 2020; 8:561. [PMID: 32733882 PMCID: PMC7362937 DOI: 10.3389/fcell.2020.00561] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 06/12/2020] [Indexed: 12/20/2022] Open
Abstract
Adipogenesis, osteogenesis and chondrogenesis of human mesenchymal stem/stromal cells (MSC) are complex and highly regulated processes. Over the years, several studies have focused on understanding the mechanisms involved in the MSC commitment to the osteogenic, adipogenic and/or chondrogenic phenotypes. High-throughput methodologies have been used to investigate the gene expression profile during differentiation. Association of data analysis of mRNAs, microRNAs, circular RNAs and long non-coding RNAs, obtained at different time points over these processes, are important to depict the complexity of differentiation. This review will discuss the results that were highlighted in transcriptome analyses of MSC undergoing adipogenic, osteogenic and chondrogenic differentiation. The focus is to shed light on key molecules, main signaling pathways and biological processes related to different time points of adipogenesis, osteogenesis and chondrogenesis.
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Affiliation(s)
- Anny W Robert
- Instituto Carlos Chagas - Fiocruz Paraná, Curitiba, Brazil
| | - Bruna H Marcon
- Instituto Carlos Chagas - Fiocruz Paraná, Curitiba, Brazil
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14
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Silva ILZ, Robert AW, Cabo GC, Spangenberg L, Stimamiglio MA, Dallagiovanna B, Gradia DF, Shigunov P. Effects of PUMILIO1 and PUMILIO2 knockdown on cardiomyogenic differentiation of human embryonic stem cells culture. PLoS One 2020; 15:e0222373. [PMID: 32437472 PMCID: PMC7241771 DOI: 10.1371/journal.pone.0222373] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 04/28/2020] [Indexed: 01/31/2023] Open
Abstract
Posttranscriptional regulation plays a fundamental role in the biology of embryonic stem cells (ESCs). Many studies have demonstrated that multiple mRNAs are coregulated by one or more RNA-binding proteins (RBPs) that orchestrate mRNA expression. A family of RBPs, which is known as the Pumilio-FBF (PUF) family, is highly conserved among different species and has been associated with the undifferentiated and differentiated states of different cell lines. In humans, two homologs of the PUF family have been found: Pumilio 1 (PUM1) and Pumilio 2 (PUM2). To understand the role of these proteins in human ESCs (hESCs), we first assessed the influence of the silencing of PUM1 and PUM2 on pluripotency genes and found that the knockdown of Pumilio genes significantly decreased the OCT4 and NANOG mRNA levels and reduced the amount of nuclear OCT4, which suggests that Pumilio proteins play a role in the maintenance of pluripotency in hESCs. Furthermore, we observed that PUM1-and-PUM2-silenced hESCs exhibited improved efficiency of in vitro cardiomyogenic differentiation. Through an in silico analysis, we identified mRNA targets of PUM1 and PUM2 that are expressed at the early stages of cardiomyogenesis, and further investigation will determine whether these target mRNAs are active and involved in the progression of cardiomyogenesis. Our findings contribute to the understanding of the role of Pumilio proteins in hESC maintenance and differentiation.
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Affiliation(s)
| | - Anny Waloski Robert
- Laboratory of Basic Biology of Stem Cells (LABCET), Instituto Carlos Chagas—FIOCRUZ-PR, Curitiba, Paraná, Brazil
| | | | - Lucia Spangenberg
- Bioinformatics Unit, Instituto Pasteur de Montevideo, Montevideo, Uruguay
| | - Marco Augusto Stimamiglio
- Laboratory of Basic Biology of Stem Cells (LABCET), Instituto Carlos Chagas—FIOCRUZ-PR, Curitiba, Paraná, Brazil
| | - Bruno Dallagiovanna
- Laboratory of Basic Biology of Stem Cells (LABCET), Instituto Carlos Chagas—FIOCRUZ-PR, Curitiba, Paraná, Brazil
| | - Daniela Fiori Gradia
- Department of Genetics, Federal University of Parana (UFPR), Curitiba, Paraná, Brazil
| | - Patrícia Shigunov
- Laboratory of Basic Biology of Stem Cells (LABCET), Instituto Carlos Chagas—FIOCRUZ-PR, Curitiba, Paraná, Brazil
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15
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Pereira IT, Spangenberg L, Cabrera G, Dallagiovanna B. Polysome-associated lncRNAs during cardiomyogenesis of hESCs. Mol Cell Biochem 2020; 468:35-45. [PMID: 32125578 DOI: 10.1007/s11010-020-03709-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2019] [Accepted: 02/22/2020] [Indexed: 12/26/2022]
Abstract
Long non-coding RNAs (lncRNAs) have been found to be involved in many biological processes, including the regulation of cell differentiation, but a complete characterization of lncRNA is still lacking. Additionally, there is evidence that lncRNAs interact with ribosomes, raising questions about their functions in cells. Here, we used a developmentally staged protocol to induce cardiogenic commitment of hESCs and then investigated the differential association of lncRNAs with polysomes. Our results identified lncRNAs in both the ribosome-free and polysome-bound fractions during cardiogenesis and showed a very well-defined temporal lncRNA association with polysomes. Clustering of lncRNAs was performed according to the gene expression patterns during the five timepoints analyzed. In addition, differential lncRNA recruitment to polysomes was observed when comparing the differentially expressed lncRNAs in the ribosome-free and polysome-bound fractions or when calculating the polysome-bound vs ribosome-free ratio. The association of lncRNAs with polysomes could represent an additional cytoplasmic role of lncRNAs, e.g., in translational regulation of mRNA expression.
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Affiliation(s)
- Isabela Tiemy Pereira
- Basic Stem-Cell Biology Laboratory, Instituto Carlos Chagas - FIOCRUZ-PR, Rua Professor Algacyr Munhoz Mader, 3775, Curitiba, PR, 81.350-010, Brazil
| | - Lucia Spangenberg
- Bioinformatics Unit, Institut Pasteur de Montevideo, Mataojo 2020, 11400, Montevideo, Uruguay
| | - Guillermo Cabrera
- Bioinformatics Unit, Institut Pasteur de Montevideo, Mataojo 2020, 11400, Montevideo, Uruguay
| | - Bruno Dallagiovanna
- Basic Stem-Cell Biology Laboratory, Instituto Carlos Chagas - FIOCRUZ-PR, Rua Professor Algacyr Munhoz Mader, 3775, Curitiba, PR, 81.350-010, Brazil.
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16
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Robert AW, Pereira IT, Dallagiovanna B, Stimamiglio MA. Secretome Analysis Performed During in vitro Cardiac Differentiation: Discovering the Cardiac Microenvironment. Front Cell Dev Biol 2020; 8:49. [PMID: 32117977 PMCID: PMC7025591 DOI: 10.3389/fcell.2020.00049] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Accepted: 01/20/2020] [Indexed: 12/13/2022] Open
Abstract
Human pluripotent stem cells are an important tool for the study of developmental processes, such as cardiomyogenic differentiation. Despite the advances made in this field, the molecular and cellular signals involved in the commitment of embryonic stem cells to the cardiac phenotype are still under investigation. Therefore, this study focuses on identifying the extracellular signals involved in in vitro cardiac differentiation of human embryonic stem cells. Using a three-dimensional cardiomyogenic differentiation protocol, the conditioned medium and the extracellular matrix (ECM) of embryoid body cultures were collected and characterized at four specific time points. Mass spectrometry (MS) and antibody array analysis of the secretome identified a number of secreted proteins related to signaling pathways, such as Wnt and TGFβ, as well as many ECM proteins. When comparing the proteins identified at selected time points, our data pointed out protein interactions and biological process related to cardiac differentiation. Interestingly, the great changes in secretome profile occurred during the cardiac progenitor specification. The secretome results were also compared with our previous RNAseq data, indicating that the secreted proteins undergo some level of gene regulation. During cardiac commitment it was observed an increase in complexity of the ECM, and some proteins as IGFBP7, FN1, HSPG2, as well as other members of the basal lamina could be highlighted. Thus, these findings contribute valuable information about essential microenvironmental signals working on cardiomyogenic differentiation that may be used in future strategies for cardiac differentiation, cardiomyocyte maturation, and in advances for future acellular therapies.
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Affiliation(s)
- Anny Waloski Robert
- Laboratório de Biologia Básica de Células-Tronco, Instituto Carlos Chagas - Fiocruz-Paraná, Curitiba, Brazil
| | - Isabela Tiemy Pereira
- Laboratório de Biologia Básica de Células-Tronco, Instituto Carlos Chagas - Fiocruz-Paraná, Curitiba, Brazil
| | - Bruno Dallagiovanna
- Laboratório de Biologia Básica de Células-Tronco, Instituto Carlos Chagas - Fiocruz-Paraná, Curitiba, Brazil
| | - Marco Augusto Stimamiglio
- Laboratório de Biologia Básica de Células-Tronco, Instituto Carlos Chagas - Fiocruz-Paraná, Curitiba, Brazil
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17
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Marcon BH, Spangenberg L, Bonilauri B, Robert AW, Angulski ABB, Cabo GC, Cofré AR, Bettes PSL, Dallagiovanna B, Shigunov P. Data describing the experimental design and quality control of RNA-Seq of human adipose-derived stem cells undergoing early adipogenesis and osteogenesis. Data Brief 2019; 28:105053. [PMID: 31989002 PMCID: PMC6970145 DOI: 10.1016/j.dib.2019.105053] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2019] [Revised: 11/22/2019] [Accepted: 12/17/2019] [Indexed: 11/28/2022] Open
Abstract
An important tool to study the regulation of gene expression is the sequencing and the analysis of different RNA fractions: total, ribosome-free, monosomal and polysomal. By comparing these different populations, it is possible to identity which genes are differentially expressed and to get information on how transcriptional and translational regulation modulates cellular function. Therefore, we used this strategy to analyze the regulation of gene expression of human adipose-derived stem cells during the triggering of the adipogenic and osteogenic differentiation. Here, we have focused on analyzing the differential expression of mRNAs during early adipogenic and osteogenic differentiation, and presented the detailed data concerning the experimental design, the RNA-Seq quality data, the raw data obtained and the RT-qPCR validation data. This information is important to confirm the accuracy of the data considering a future reuse of the data provided. Moreover, this study may be used as groundwork for future characterization of the transcriptome and the translatome regulation of different cell types.
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Affiliation(s)
- Bruna H Marcon
- Laboratory of Basic Biology of Stem Cells (LABCET), Instituto Carlos Chagas - FIOCRUZ-PR, Curitiba, Paraná, 81350-010, Brazil
| | - Lucia Spangenberg
- Unidad de Bioinformática, Institut Pasteur Montevideo, Mataojo 2020, Montevideo, 11400, Uruguay
| | - Bernardo Bonilauri
- Laboratory of Basic Biology of Stem Cells (LABCET), Instituto Carlos Chagas - FIOCRUZ-PR, Curitiba, Paraná, 81350-010, Brazil
| | - Anny Waloski Robert
- Laboratory of Basic Biology of Stem Cells (LABCET), Instituto Carlos Chagas - FIOCRUZ-PR, Curitiba, Paraná, 81350-010, Brazil
| | - Addeli Bez Batti Angulski
- Laboratory of Basic Biology of Stem Cells (LABCET), Instituto Carlos Chagas - FIOCRUZ-PR, Curitiba, Paraná, 81350-010, Brazil
| | - Guillermo Cabrera Cabo
- Unidad de Bioinformática, Institut Pasteur Montevideo, Mataojo 2020, Montevideo, 11400, Uruguay
| | - Axel R Cofré
- Laboratory of Basic Biology of Stem Cells (LABCET), Instituto Carlos Chagas - FIOCRUZ-PR, Curitiba, Paraná, 81350-010, Brazil
| | | | - Bruno Dallagiovanna
- Laboratory of Basic Biology of Stem Cells (LABCET), Instituto Carlos Chagas - FIOCRUZ-PR, Curitiba, Paraná, 81350-010, Brazil
| | - Patrícia Shigunov
- Laboratory of Basic Biology of Stem Cells (LABCET), Instituto Carlos Chagas - FIOCRUZ-PR, Curitiba, Paraná, 81350-010, Brazil
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18
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Abud APR, Kuligovski C, Corrêa NCR, de Moraes ECP, Caruso RRB, Schuck DC, Brohem CA, Dallagiovanna B, de Aguiar AM. The inhibition of adipogenesis via an in vitro assay can reduce animal use by more precisely estimating the starting dose for the acute toxic class method. Toxicol Lett 2019; 311:80-90. [PMID: 31029752 DOI: 10.1016/j.toxlet.2019.04.009] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 03/01/2019] [Accepted: 04/08/2019] [Indexed: 02/07/2023]
Abstract
In the present work, we established an adipogenesis inhibition assay as an adequate and sensitive in vitro model for reducing animal use by estimating the starting dose for the acute toxic class (ATC) method. First, human adipose-derived stem cells (ADSCs) underwent adipogenic differentiation induction for 14 days. Then, by high-content imaging analysis, we determined the percentage and area of cell differentiation that we considered suitable for negative and positive internal control according to the quality control criteria strictly standardized mean difference (SSMD) and robust SSMD. Moreover, we established sodium dodecyl sulfate (SDS) as an external positive control in this assay. To measure reduction in animal use to estimate the starting dose for the ATC method, we evaluated 10 chemicals representing Globally Harmonized System of Classification and Labeling of Chemicals (GHS) toxicity categories 1-5 and unclassified toxicity and determined the dose-response curves for percentage and area of cell differentiation by using the Hill function with an R2 ≥ 0.85. The resulting IC50 values were used for LD50 prediction and for estimating the starting dose for the ATC method. Our results indicated that use of the inhibition of adipogenesis assay to estimate the starting dose for the ATC method would decrease animal use for 7 out of 10 tested substances, possibly all substances if we consider the more toxic test substances in GHS categories 1, 2, and 3. We can conclude that the present assay is a suitable alternative to reduce animal testing in the first steps of predicting highly toxic substances. Moreover, this method also presents internal and external controls as differentials, which guarantee the quality of the assay as well as the results. These features are important for suggesting a methodology for regulatory purposes.
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Affiliation(s)
- Ana Paula Ressett Abud
- Laboratório de Biologia Básica de Células-Tronco, Instituto Carlos Chagas, Fiocruz, Curitiba, PR, Brazil
| | - Crisciele Kuligovski
- Laboratório de Biologia Básica de Células-Tronco, Instituto Carlos Chagas, Fiocruz, Curitiba, PR, Brazil
| | | | - Elizabeth Cunha Penna de Moraes
- Laboratório de Biologia Básica de Células-Tronco, Instituto Carlos Chagas, Fiocruz, Curitiba, PR, Brazil; Universidade Federal do Rio de Janeiro, Rio de Janeiro, RJ, Brazil
| | - Rodrigo Rêgo Barros Caruso
- Laboratório de Biologia Básica de Células-Tronco, Instituto Carlos Chagas, Fiocruz, Curitiba, PR, Brazil; Instituto Carlos Chagas, Fiocruz, Curitiba, PR, Brazil
| | | | - Carla Abdo Brohem
- Núcleo de Avaliação de Segurança (Grupo Boticário), Curitiba, PR, Brazil
| | - Bruno Dallagiovanna
- Laboratório de Biologia Básica de Células-Tronco, Instituto Carlos Chagas, Fiocruz, Curitiba, PR, Brazil.
| | - Alessandra Melo de Aguiar
- Laboratório de Biologia Básica de Células-Tronco, Instituto Carlos Chagas, Fiocruz, Curitiba, PR, Brazil.
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19
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Marcon BH, Shigunov P, Spangenberg L, Pereira IT, de Aguiar AM, Amorín R, Rebelatto CK, Correa A, Dallagiovanna B. Cell cycle genes are downregulated after adipogenic triggering in human adipose tissue-derived stem cells by regulation of mRNA abundance. Sci Rep 2019; 9:5611. [PMID: 30948750 PMCID: PMC6449374 DOI: 10.1038/s41598-019-42005-3] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 03/20/2019] [Indexed: 12/18/2022] Open
Abstract
The adipogenic process is characterized by the expression of adipocyte differentiation markers that lead to changes in cell metabolism and to the accumulation of lipid droplets. Moreover, during early adipogenesis, cells undergo a strong downregulation of translational activity with a decrease in cell size, proliferation and migration. In the present study, we identified that after 24 hours of adipogenic induction, human adipose tissue-derived stem cells (hASCs) undergo a G1-cell cycle arrest consistent with reduced proliferation, and this effect was correlated with a shift in polysome profile with an enrichment of the monosomal fraction and a reduction of the polysomal fraction. Polysome profiling analysis also revealed that this change in the monosomal/polysomal ratio was related to a strong downregulation of cell cycle and proliferation genes, such as cyclins and cyclin-dependent kinases (CDKs). Comparing total and polysome-associated mRNA sequencing, we also observed that this downregulation was mostly due to a reduction of cell cycle and proliferation transcripts via control of total mRNA abundance, rather than by translational control.
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Affiliation(s)
- Bruna H Marcon
- Instituto Carlos Chagas, Fiocruz-Paraná. Rua Professor Algacyr Munhoz Mader, 3775, Curitiba, PR, 81350-010, Brazil
| | - Patrícia Shigunov
- Instituto Carlos Chagas, Fiocruz-Paraná. Rua Professor Algacyr Munhoz Mader, 3775, Curitiba, PR, 81350-010, Brazil
| | - Lucia Spangenberg
- Unidad de Bioinformática, Institut Pasteur Montevideo. Mataojo 2020, Montevideo, 11400, Uruguay
| | - Isabela Tiemy Pereira
- Instituto Carlos Chagas, Fiocruz-Paraná. Rua Professor Algacyr Munhoz Mader, 3775, Curitiba, PR, 81350-010, Brazil
| | - Alessandra Melo de Aguiar
- Instituto Carlos Chagas, Fiocruz-Paraná. Rua Professor Algacyr Munhoz Mader, 3775, Curitiba, PR, 81350-010, Brazil
| | - Rocío Amorín
- Unidad de Bioinformática, Institut Pasteur Montevideo. Mataojo 2020, Montevideo, 11400, Uruguay
| | - Carmen K Rebelatto
- Núcleo de Tecnologia Celular, Pontifícia Universidade Católica do Paraná, Rua Imaculada Conceição, 1155, Curitiba, PR, 80215-901, Brazil
| | - Alejandro Correa
- Instituto Carlos Chagas, Fiocruz-Paraná. Rua Professor Algacyr Munhoz Mader, 3775, Curitiba, PR, 81350-010, Brazil.
| | - Bruno Dallagiovanna
- Instituto Carlos Chagas, Fiocruz-Paraná. Rua Professor Algacyr Munhoz Mader, 3775, Curitiba, PR, 81350-010, Brazil.
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20
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Pereira IT, Spangenberg L, Robert AW, Amorín R, Stimamiglio MA, Naya H, Dallagiovanna B. Cardiomyogenic differentiation is fine-tuned by differential mRNA association with polysomes. BMC Genomics 2019; 20:219. [PMID: 30876407 PMCID: PMC6420765 DOI: 10.1186/s12864-019-5550-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2018] [Accepted: 02/20/2019] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Cardiac cell fate specification occurs through progressive steps, and its gene expression regulation features are still being defined. There has been an increasing interest in understanding the coordination between transcription and post-transcriptional regulation during the differentiation processes. Here, we took advantage of the polysome profiling technique to isolate and high-throughput sequence ribosome-free and polysome-bound RNAs during cardiomyogenesis. RESULTS We showed that polysome-bound RNAs exhibit the cardiomyogenic commitment gene expression and that mesoderm-to-cardiac progenitor stages are strongly regulated. Additionally, we compared ribosome-free and polysome-bound RNAs and found that the post-transcriptional regulation vastly contributes to cardiac phenotype determination, including RNA recruitment to and dissociation from ribosomes. Moreover, we found that protein synthesis is decreased in cardiomyocytes compared to human embryonic stem-cells (hESCs), possibly due to the down-regulation of translation-related genes. CONCLUSIONS Our data provided a powerful tool to investigate genes potentially controlled by post-transcriptional mechanisms during the cardiac differentiation of hESC. This work could prospect fundamental tools to develop new therapy and research approaches.
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Affiliation(s)
- Isabela Tiemy Pereira
- Basic Stem-cell Biology Laboratory, Instituto Carlos Chagas - FIOCRUZ-PR, Rua Professor Algacyr Munhoz Mader, 3775, Curitiba, PR, 81.350-010, Brazil
| | - Lucia Spangenberg
- Bioinformatics Unit, Institut Pasteur de Montevideo, Mataojo 2020, 11400, Montevideo, Uruguay
| | - Anny Waloski Robert
- Basic Stem-cell Biology Laboratory, Instituto Carlos Chagas - FIOCRUZ-PR, Rua Professor Algacyr Munhoz Mader, 3775, Curitiba, PR, 81.350-010, Brazil
| | - Rocío Amorín
- Bioinformatics Unit, Institut Pasteur de Montevideo, Mataojo 2020, 11400, Montevideo, Uruguay
| | - Marco Augusto Stimamiglio
- Basic Stem-cell Biology Laboratory, Instituto Carlos Chagas - FIOCRUZ-PR, Rua Professor Algacyr Munhoz Mader, 3775, Curitiba, PR, 81.350-010, Brazil
| | - Hugo Naya
- Bioinformatics Unit, Institut Pasteur de Montevideo, Mataojo 2020, 11400, Montevideo, Uruguay
| | - Bruno Dallagiovanna
- Basic Stem-cell Biology Laboratory, Instituto Carlos Chagas - FIOCRUZ-PR, Rua Professor Algacyr Munhoz Mader, 3775, Curitiba, PR, 81.350-010, Brazil.
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21
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Reus TL, Machado TN, Bezerra AG, Marcon BH, Paschoal ACC, Kuligovski C, de Aguiar AM, Dallagiovanna B. Dose-dependent cytotoxicity of bismuth nanoparticles produced by LASiS in a reference mammalian cell line BALB/c 3T3. Toxicol In Vitro 2018; 53:99-106. [PMID: 30030050 DOI: 10.1016/j.tiv.2018.07.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 06/11/2018] [Accepted: 07/06/2018] [Indexed: 12/24/2022]
Abstract
Nanoparticles (NPs) have emerged as new potential tools for many applications in previous years. Among all types of NPs, bismuth NPs (BiNPs) have a very low cost and potential for many applications, ranging from medicine to industry. Although the toxic effects of bismuth have been studied, little is known about its toxicity at the nanoscale level. Therefore, in this study, we aimed to investigate the cytotoxic effects of BiNPs produced by laser ablation synthesis in solution (LASiS) in a reference mammalian cell line to evaluate their cytotoxicity (BALB/c 3 T3 cells). We also stabilized BiNPs in two different solutions: culture medium supplemented with fetal bovine serum (FBS) and bovine serum albumin (BSA). The cytotoxicity of BiNPs in culture medium (IC50:28.51 ± 9.96 μg/ml) and in BSA (IC50:25.54 ± 8.37 μg/ml) was assessed, and they were not significantly different. Second, the LD50 was predicted, and BiNPs were estimated as GHS class 4. We also found that cell death occurs due to apoptosis. By evaluating the interaction between BiNPs and cells at ultrastructural level, we suggest that cell death occurs once BiNPs are internalized. Additionally, we suggest that BiNPs cause cell damage because myelin figures were found inside cells that had internalized BiNPs. To date, this is the first study to assess the cytotoxicity of BiNPs produced by LASiS and to predict the possible LD50 and GHS class of BiNPs.
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Affiliation(s)
- Thamile Luciane Reus
- Laboratório de Biologia Básica de Células-tronco, Instituto Carlos Chagas, FIOCRUZ Paraná, Rua Prof. Algacyr Munhoz Mader, 3775 CIC, 81350-010 Curitiba, PR, Brazil
| | - Thiago Neves Machado
- Laboratório FOTONANOBIO, Universidade Tecnológica Federal do Paraná, Avenida 7 de Setembro 3165, 80230-901 Curitiba, PR, Brazil
| | - Arandi Ginane Bezerra
- Laboratório FOTONANOBIO, Universidade Tecnológica Federal do Paraná, Avenida 7 de Setembro 3165, 80230-901 Curitiba, PR, Brazil
| | - Bruna Hilzendeger Marcon
- Laboratório de Biologia Básica de Células-tronco, Instituto Carlos Chagas, FIOCRUZ Paraná, Rua Prof. Algacyr Munhoz Mader, 3775 CIC, 81350-010 Curitiba, PR, Brazil
| | - Ariane Caroline Campos Paschoal
- Laboratório de Biologia Básica de Células-tronco, Instituto Carlos Chagas, FIOCRUZ Paraná, Rua Prof. Algacyr Munhoz Mader, 3775 CIC, 81350-010 Curitiba, PR, Brazil
| | - Crisciele Kuligovski
- Laboratório de Biologia Básica de Células-tronco, Instituto Carlos Chagas, FIOCRUZ Paraná, Rua Prof. Algacyr Munhoz Mader, 3775 CIC, 81350-010 Curitiba, PR, Brazil
| | - Alessandra Melo de Aguiar
- Laboratório de Biologia Básica de Células-tronco, Instituto Carlos Chagas, FIOCRUZ Paraná, Rua Prof. Algacyr Munhoz Mader, 3775 CIC, 81350-010 Curitiba, PR, Brazil.
| | - Bruno Dallagiovanna
- Laboratório de Biologia Básica de Células-tronco, Instituto Carlos Chagas, FIOCRUZ Paraná, Rua Prof. Algacyr Munhoz Mader, 3775 CIC, 81350-010 Curitiba, PR, Brazil.
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22
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Robert AW, Angulski ABB, Spangenberg L, Shigunov P, Pereira IT, Bettes PSL, Naya H, Correa A, Dallagiovanna B, Stimamiglio MA. Gene expression analysis of human adipose tissue-derived stem cells during the initial steps of in vitro osteogenesis. Sci Rep 2018; 8:4739. [PMID: 29549281 PMCID: PMC5856793 DOI: 10.1038/s41598-018-22991-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Accepted: 02/06/2018] [Indexed: 12/11/2022] Open
Abstract
Mesenchymal stem cells (MSCs) have been widely studied with regard to their potential use in cell therapy protocols and regenerative medicine. However, a better comprehension about the factors and molecular mechanisms driving cell differentiation is now mandatory to improve our chance to manipulate MSC behavior and to benefit future applications. In this work, we aimed to study gene regulatory networks at an early step of osteogenic differentiation. Therefore, we analyzed both the total mRNA and the mRNA fraction associated with polysomes on human adipose tissue-derived stem cells (hASCs) at 24 h of osteogenesis induction. The RNA-seq results evidenced that hASC fate is not compromised with osteogenesis at this time and that 21 days of continuous cell culture stimuli are necessary for full osteogenic differentiation of hASCs. Furthermore, early stages of osteogenesis induction involved gene regulation that was linked to the management of cell behavior in culture, such as the control of cell adhesion and proliferation. In conclusion, although discrete initial gene regulation related to osteogenesis occur, the first 24 h of induction is not sufficient to trigger and drive in vitro osteogenic differentiation of hASCs.
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Affiliation(s)
- Anny Waloski Robert
- Instituto Carlos Chagas, Fiocruz-Paraná. Rua Professor Algacyr Munhoz Mader, 3775, Curitiba, PR, 81350-010, Brazil
| | - Addeli Bez Batti Angulski
- Instituto Carlos Chagas, Fiocruz-Paraná. Rua Professor Algacyr Munhoz Mader, 3775, Curitiba, PR, 81350-010, Brazil
| | - Lucia Spangenberg
- Unidad de Bioinformática, Institut Pasteur Montevideo. Mataojo 2020, Montevideo, 11400, Uruguay
| | - Patrícia Shigunov
- Instituto Carlos Chagas, Fiocruz-Paraná. Rua Professor Algacyr Munhoz Mader, 3775, Curitiba, PR, 81350-010, Brazil
| | - Isabela Tiemy Pereira
- Instituto Carlos Chagas, Fiocruz-Paraná. Rua Professor Algacyr Munhoz Mader, 3775, Curitiba, PR, 81350-010, Brazil
| | | | - Hugo Naya
- Unidad de Bioinformática, Institut Pasteur Montevideo. Mataojo 2020, Montevideo, 11400, Uruguay
| | - Alejandro Correa
- Instituto Carlos Chagas, Fiocruz-Paraná. Rua Professor Algacyr Munhoz Mader, 3775, Curitiba, PR, 81350-010, Brazil
| | - Bruno Dallagiovanna
- Instituto Carlos Chagas, Fiocruz-Paraná. Rua Professor Algacyr Munhoz Mader, 3775, Curitiba, PR, 81350-010, Brazil
| | - Marco Augusto Stimamiglio
- Instituto Carlos Chagas, Fiocruz-Paraná. Rua Professor Algacyr Munhoz Mader, 3775, Curitiba, PR, 81350-010, Brazil.
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23
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Corrêa NCR, Kuligovski C, Paschoal ACC, Abud APR, Rebelatto CLK, Leite LMB, Senegaglia AC, Dallagiovanna B, Aguiar AMD. Human adipose-derived stem cells (ADSC) and human periodontal ligament stem cells (PDLSC) as cellular substrates of a toxicity prediction assay. Regul Toxicol Pharmacol 2018; 92:75-82. [DOI: 10.1016/j.yrtph.2017.11.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2017] [Revised: 11/07/2017] [Accepted: 11/08/2017] [Indexed: 01/08/2023]
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24
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Marcon BH, Holetz FB, Eastman G, Origa-Alves AC, Amorós MA, de Aguiar AM, Rebelatto CK, Brofman PRS, Sotelo-Silveira J, Dallagiovanna B. Downregulation of the protein synthesis machinery is a major regulatory event during early adipogenic differentiation of human adipose-derived stromal cells. Stem Cell Res 2017; 25:191-201. [PMID: 29156375 DOI: 10.1016/j.scr.2017.10.027] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2017] [Revised: 10/11/2017] [Accepted: 10/27/2017] [Indexed: 12/26/2022] Open
Abstract
Commitment of adult stem cells involves the activation of specific gene networks regulated from transcription to protein synthesis. Here, we used ribosome profiling to identify mRNAs regulated at the translational level, through both differential association to polysomes and modulation of their translational rates. We observed that translational regulation during the differentiation of human adipose-derived stromal cells (hASCs, also known as adipose-derived mesenchymal stem cells), a subset of which are stem cells, to adipocytes was a major regulatory event. hASCs showed a significant reduction of whole protein synthesis after adipogenic induction and a downregulation of the expression and translational efficiency of ribosomal proteins. Additionally, focal adhesion and cytoskeletal proteins were downregulated at the translational level. This negative regulation of the essential biological functions of hASCs resulted in a reduction in cell size and the potential of hASCs to migrate. We analyzed whether the inactivation of key translation initiation factors was involved in this observed major repression of translation. We showed that there was an increase in the hypo phosphorylated forms of 4E-BP1, a negative regulator of translation, during early adipogenesis. Our results showed that extensive translational regulation occurred during the early stage of the adipogenic differentiation of hASCs.
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Affiliation(s)
- Bruna H Marcon
- Instituto Carlos Chagas, Fiocruz-Paraná, Rua Professor Algacyr Munhoz Mader, 3775, Curitiba, PR 81350-010, Brazil
| | - Fabíola B Holetz
- Instituto Carlos Chagas, Fiocruz-Paraná, Rua Professor Algacyr Munhoz Mader, 3775, Curitiba, PR 81350-010, Brazil
| | - Guillermo Eastman
- Department of Genomics, Instituto de Investigaciones Biológicas Clemente Estable, Avenida Italia 3318, CP 11600 Montevideo, Uruguay
| | - Ana Carolina Origa-Alves
- Instituto Carlos Chagas, Fiocruz-Paraná, Rua Professor Algacyr Munhoz Mader, 3775, Curitiba, PR 81350-010, Brazil
| | - Mariana Andrea Amorós
- Laboratory of Stem Cells, Institute of Biology and Experimental Medicine - National Council of Scientific and Technical Research (IByME-CONICET), Ciudad Autónoma de Buenos Aires, Argentina
| | - Alessandra Melo de Aguiar
- Instituto Carlos Chagas, Fiocruz-Paraná, Rua Professor Algacyr Munhoz Mader, 3775, Curitiba, PR 81350-010, Brazil
| | - Carmen K Rebelatto
- Núcleo de Tecnologia Celular, Pontifícia Universidade Católica do Paraná, Rua Imaculada Conceição, 1155, Curitiba, PR 80215-901, Brazil
| | - Paulo R S Brofman
- Núcleo de Tecnologia Celular, Pontifícia Universidade Católica do Paraná, Rua Imaculada Conceição, 1155, Curitiba, PR 80215-901, Brazil
| | - Jose Sotelo-Silveira
- Department of Genomics, Instituto de Investigaciones Biológicas Clemente Estable, Avenida Italia 3318, CP 11600 Montevideo, Uruguay; Department of Cell and Molecular Biology, School of Sciences, Universidad de la República, Montevideo, Uruguay.
| | - Bruno Dallagiovanna
- Instituto Carlos Chagas, Fiocruz-Paraná, Rua Professor Algacyr Munhoz Mader, 3775, Curitiba, PR 81350-010, Brazil.
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25
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Dallagiovanna B, Pereira IT, Origa-Alves AC, Shigunov P, Naya H, Spangenberg L. lncRNAs are associated with polysomes during adipose-derived stem cell differentiation. Gene 2017; 610:103-111. [PMID: 28185860 DOI: 10.1016/j.gene.2017.02.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2016] [Revised: 01/04/2017] [Accepted: 02/05/2017] [Indexed: 12/22/2022]
Abstract
Over the past few years, an increasing number of long noncoding RNAs (lncRNAs) have been identified in mammalian genomes. Most of these lncRNAs are expressed at low levels in different human cell types. lncRNAs are found not only in the nucleus but are also enriched in the cytosolic fraction and are associated with translating polysomes. Expression of lncRNAs that have putative roles in cell differentiation has been identified in embryonic and adult stem cells. Nevertheless, the mechanisms by which lncRNAs operate in the cell are still poorly understood.Here, we studied the expression of the subpopulation of lncRNAs that are associated with polysomes in adipose-derived stem cells (hASCs) during their commitment to adipocytes. We established that lncRNAs and protein coding genes have similar expression levels. The relatively comparable expression of these transcripts could be a particular feature of hASCs. We then show that lncRNAs are associated with polysomes in undifferentiated and early differentiating cells, which was confirmed by quantitative RT-PCR. The association of lncRNAs with polysomes was also comparable to that of mRNAs. Our results suggest that the presence of lncRNAs in the polysomal RNA fraction is not the result of random association. We observed that a high percentage of lncRNAs are actively mobilized to or from polysomes during early stages of adipogenesis. Moreover, we found several lncRNAs that can potentially target miRNAs relevant to adipogenesis.
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Affiliation(s)
- Bruno Dallagiovanna
- Laboratorio de Biologia Basica de Celulas-tronco, FIOCRUZ-PR, Rua Professor Algacyr Munhoz Mader, 3775, 81.350-010 Curitiba, Brazil.
| | - Isabela T Pereira
- Laboratorio de Biologia Basica de Celulas-tronco, FIOCRUZ-PR, Rua Professor Algacyr Munhoz Mader, 3775, 81.350-010 Curitiba, Brazil.
| | - Ana Carolina Origa-Alves
- Laboratorio de Biologia Basica de Celulas-tronco, FIOCRUZ-PR, Rua Professor Algacyr Munhoz Mader, 3775, 81.350-010 Curitiba, Brazil.
| | - Patricia Shigunov
- Laboratorio de Biologia Basica de Celulas-tronco, FIOCRUZ-PR, Rua Professor Algacyr Munhoz Mader, 3775, 81.350-010 Curitiba, Brazil.
| | - Hugo Naya
- Bioinformatics Unit, Institut Pasteur de Montevideo, Mataojo 2020, CP 11400 Montevideo, Uruguay.
| | - Lucía Spangenberg
- Bioinformatics Unit, Institut Pasteur de Montevideo, Mataojo 2020, CP 11400 Montevideo, Uruguay.
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26
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Drehmer DL, de Aguiar AM, Brandt AP, Petiz L, Cadena SMSC, Rebelatto CK, Brofman PRS, Filipak Neto F, Dallagiovanna B, Abud APR. Metabolic switches during the first steps of adipogenic stem cells differentiation. Stem Cell Res 2016; 17:413-421. [PMID: 27653462 DOI: 10.1016/j.scr.2016.09.001] [Citation(s) in RCA: 274] [Impact Index Per Article: 34.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2016] [Revised: 08/30/2016] [Accepted: 09/02/2016] [Indexed: 10/21/2022] Open
Abstract
The understanding of metabolism during cell proliferation and commitment provides a greater insight into the basic biology of cells, allowing future applications. Here we evaluated the energy and oxidative changes during the early adipogenic differentiation of human adipose tissue-derived stromal cells (hASCs). hASCs were maintained under differentiation conditions during 3 and 7days. Oxygen consumption, mitochondrial mass and membrane potential, reactive oxygen species (ROS) generation, superoxide dismutase (SOD) and catalase activities, non-protein thiols (NPT) concentration and lipid peroxidation were analyzed. We observed that 7days of adipogenic induction are required to stimulate cells to consume more oxygen and increase mitochondrial activity, indicating organelle maturation and a transition from glycolytic to oxidative energy metabolism. ROS production was only increased after 3days and may be involved in the differentiation commitment. ROS source was not only the mitochondria and we suggest that NOX proteins are related to ROS generation and therefore adipogenic commitment. ROS production did not change after 7days, but an increased activity of catalase and NPT concentration as well as a decreased lipid peroxidation were observed. Thus, a short period of differentiation induction is able to change the energetic and oxidative metabolic profile of hASCs and stimulate cytoprotection processes.
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Affiliation(s)
- Daiana Leila Drehmer
- Laboratório de Biologia Básica de Células Tronco, Instituto Carlos Chagas, Fiocruz, Curitiba, Paraná, Brazil
| | - Alessandra Melo de Aguiar
- Laboratório de Biologia Básica de Células Tronco, Instituto Carlos Chagas, Fiocruz, Curitiba, Paraná, Brazil
| | | | - Lyvia Petiz
- Universidade Federal do Paraná, Paraná, Paraná, Brazil
| | | | | | - Paulo R S Brofman
- Pontifícia Universidade Católica do Paraná, Curitiba, Paraná, Brazil
| | | | - Bruno Dallagiovanna
- Laboratório de Biologia Básica de Células Tronco, Instituto Carlos Chagas, Fiocruz, Curitiba, Paraná, Brazil
| | - Ana Paula Ressetti Abud
- Laboratório de Biologia Básica de Células Tronco, Instituto Carlos Chagas, Fiocruz, Curitiba, Paraná, Brazil.
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27
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Shigunov P, Dallagiovanna B. Stem Cell Ribonomics: RNA-Binding Proteins and Gene Networks in Stem Cell Differentiation. Front Mol Biosci 2015; 2:74. [PMID: 26734617 PMCID: PMC4686646 DOI: 10.3389/fmolb.2015.00074] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Accepted: 12/07/2015] [Indexed: 12/21/2022] Open
Abstract
Stem cells are undifferentiated cells with the ability to self-renew and the potential to differentiate into all body cell types. Stem cells follow a developmental genetic program and are able to respond to alterations in the environment through various signaling pathways. The mechanisms that control these processes involve the activation of transcription followed by a series of post-transcriptional events. These post-transcriptional steps are mediated by the interaction of RNA-binding proteins (RBPs) with defined subpopulations of RNAs creating a regulatory gene network. Characterizing these RNA-protein networks is essential to understanding the regulatory mechanisms underlying the control of stem cell fate. Ribonomics is the combination of classical biochemical purification protocols with the high-throughput identification of transcripts applied to the functional characterization of RNA-protein complexes. Here, we describe the different approaches that can be used in a ribonomic approach and how they have contributed to understanding the function of several RBPs with central roles in stem cell biology.
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Affiliation(s)
- Patrícia Shigunov
- Stem Cells Basic Biology Laboratory, Carlos Chagas Institute, Oswaldo Cruz Foundation Curitiba, Brazil
| | - Bruno Dallagiovanna
- Stem Cells Basic Biology Laboratory, Carlos Chagas Institute, Oswaldo Cruz Foundation Curitiba, Brazil
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28
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Abud APR, Zych J, Reus TL, Kuligovski C, de Moraes E, Dallagiovanna B, Aguiar AMD. The use of human adipose-derived stem cells based cytotoxicity assay for acute toxicity test. Regul Toxicol Pharmacol 2015; 73:992-8. [DOI: 10.1016/j.yrtph.2015.09.015] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 08/13/2015] [Accepted: 09/10/2015] [Indexed: 10/23/2022]
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29
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Smircich P, Eastman G, Bispo S, Duhagon MA, Guerra-Slompo EP, Garat B, Goldenberg S, Munroe DJ, Dallagiovanna B, Holetz F, Sotelo-Silveira JR. Ribosome profiling reveals translation control as a key mechanism generating differential gene expression in Trypanosoma cruzi. BMC Genomics 2015; 16:443. [PMID: 26054634 PMCID: PMC4460968 DOI: 10.1186/s12864-015-1563-8] [Citation(s) in RCA: 93] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2014] [Accepted: 04/22/2015] [Indexed: 12/02/2022] Open
Abstract
Background Due to the absence of transcription initiation regulation of protein coding genes transcribed by RNA polymerase II, posttranscriptional regulation is responsible for the majority of gene expression changes in trypanosomatids. Therefore, cataloging the abundance of mRNAs (transcriptome) and the level of their translation (translatome) is a key step to understand control of gene expression in these organisms. Results Here we assess the extent of regulation of the transcriptome and the translatome in the Chagas disease causing agent, Trypanosoma cruzi, in both the non-infective (epimastigote) and infective (metacyclic trypomastigote) insect’s life stages using RNA-seq and ribosome profiling. The observed steady state transcript levels support constitutive transcription and maturation implying the existence of distinctive posttranscriptional regulatory mechanisms controlling gene expression levels at those parasite stages. Meanwhile, the downregulation of a large proportion of the translatome indicates a key role of translation control in differentiation into the infective form. The previously described proteomic data correlate better with the translatomes than with the transcriptomes and translational efficiency analysis shows a wide dynamic range, reinforcing the importance of translatability as a regulatory step. Translation efficiencies for protein families like ribosomal components are diminished while translation of the transialidase virulence factors is upregulated in the quiescent infective metacyclic trypomastigote stage. Conclusions A large subset of genes is modulated at the translation level in two different stages of Trypanosoma cruzi life cycle. Translation upregulation of virulence factors and downregulation of ribosomal proteins indicates different degrees of control operating to prepare the parasite for an infective life form. Taking together our results show that translational regulation, in addition to regulation of steady state level of mRNA, is a major factor playing a role during the parasite differentiation. Electronic supplementary material The online version of this article (doi:10.1186/s12864-015-1563-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Pablo Smircich
- Laboratory of Molecular Interactions, School of Sciences, Universidad de la República, Montevideo, Uruguay. .,Department of Genetics. School of Medicine, Universidad de la República, Montevideo, Uruguay.
| | - Guillermo Eastman
- Department of Genomics, Instituto de Investigaciones Biológicas Clemente Estable, Av. Italia 3318, Montevideo, CP 11600, Uruguay.
| | - Saloe Bispo
- Laboratory of Gene Expression Regulation Studies Carlos Chagas Institute, FIOCRUZ, Curitiba, 81350-010, Brazil.
| | - María Ana Duhagon
- Laboratory of Molecular Interactions, School of Sciences, Universidad de la República, Montevideo, Uruguay. .,Department of Genetics. School of Medicine, Universidad de la República, Montevideo, Uruguay.
| | - Eloise P Guerra-Slompo
- Laboratory of Gene Expression Regulation Studies Carlos Chagas Institute, FIOCRUZ, Curitiba, 81350-010, Brazil.
| | - Beatriz Garat
- Laboratory of Molecular Interactions, School of Sciences, Universidad de la República, Montevideo, Uruguay.
| | - Samuel Goldenberg
- Laboratory of Gene Expression Regulation Studies Carlos Chagas Institute, FIOCRUZ, Curitiba, 81350-010, Brazil.
| | - David J Munroe
- Cancer Research Technology Program, Leidos Biomedical Research, Inc., Frederick National Laboratory for Cancer Research, Frederick, MD, 21702, USA.
| | - Bruno Dallagiovanna
- Laboratory of Gene Expression Regulation Studies Carlos Chagas Institute, FIOCRUZ, Curitiba, 81350-010, Brazil.
| | - Fabiola Holetz
- Laboratory of Gene Expression Regulation Studies Carlos Chagas Institute, FIOCRUZ, Curitiba, 81350-010, Brazil.
| | - Jose R Sotelo-Silveira
- Department of Genomics, Instituto de Investigaciones Biológicas Clemente Estable, Av. Italia 3318, Montevideo, CP 11600, Uruguay. .,Department of Cell and Molecular Biology, School of Sciences, Universidad de la Republica, Montevideo, Uruguay.
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30
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Zych J, Spangenberg L, Stimamiglio MA, Abud APR, Shigunov P, Marchini FK, Kuligovski C, Cofré AR, Schittini AV, Aguiar AM, Senegaglia A, Brofman PRS, Goldenberg S, Dallagiovanna B, Naya H, Correa A. Polysome profiling shows the identity of human adipose-derived stromal/stem cells in detail and clearly distinguishes them from dermal fibroblasts. Stem Cells Dev 2014; 23:2791-802. [PMID: 25068904 DOI: 10.1089/scd.2013.0496] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Although fibroblasts and multipotent stromal/stem cells, including adipose-derived stromal cells (ADSCs), have been extensively studied, they cannot be clearly distinguished from each other. We, therefore, investigated the cellular and molecular characteristics of ADSCs and fibroblasts. ADSCs and fibroblasts share several morphological similarities and surface markers, but were clearly found to be different types of cells. Contrary to previous reports, fibroblasts were not able to differentiate into adipocytes, osteoblasts, or chondrocytes. Polysome-bound mRNA profiling revealed that ∼ 1,547 genes were differentially expressed (DE) in the two cell types; the genes were related to cell adhesion, the extracellular matrix, differentiation, and proliferation. These findings were confirmed by functional analyses showing that ADSCs had a greater adhesion capacity than fibroblasts; the proliferation rate of fibroblasts was also higher than that of ADSCs. Importantly, 185 DE genes were integral to the plasma membrane and, thus, candidate markers for ADSC isolation and manipulation. We also observed that an established marker of fibroblasts and ADSCs, CD105, was overexpressed in ADSCs at both mRNA and protein levels. CD105 expression seemed to be related to differentiation capacity, at least for adipogenesis. This study shows that ADSCs and fibroblasts are distinct cell types. These findings should be taken into account when using these two cell types in basic and therapeutic studies.
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Affiliation(s)
- Jaiesa Zych
- 1 Instituto Carlos Chagas , Fiocruz-Paraná, Curitiba, Brazil
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31
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Shigunov P, Sotelo-Silveira J, Stimamiglio MA, Kuligovski C, Irigoín F, Badano JL, Munroe D, Correa A, Dallagiovanna B. Ribonomic analysis of human DZIP1 reveals its involvement in ribonucleoprotein complexes and stress granules. BMC Mol Biol 2014; 15:12. [PMID: 24993635 PMCID: PMC4091656 DOI: 10.1186/1471-2199-15-12] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Accepted: 06/19/2014] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND DZIP1 (DAZ-interacting protein 1) has been described as a component of the Hh signaling pathway with a putative regulatory role in ciliogenesis. DZIP1 interacts with DAZ RNA binding proteins in embryonic stem cells and human germ cells suggesting a role in mRNA regulation. RESULTS We investigated DZIP1 function in HeLa cells and its involvement in ribonucleoprotein complexes. DZIP1 was predominantly located in granules in the cytoplasm. Under oxidative stress conditions, DZIP1 re-localized to stress granules. DZIP appears to be important for the formation of stress granules during the stress response. We used immunoprecipitation assays with antibodies against DZIP1 and microarray hybridization to identify mRNAs associated with DZIP1. The genetic networks formed by the DZIP1-associated mRNAs were involved in cell cycle and gene expression regulation. DZIP1 is involved in the Hedgehog signaling pathway. We used cyclopamine, a specific inhibitor of this pathway, to analyze the expression of DZIP1 and its associated mRNAs. The abundance of DZIP1-associated mRNAs increased with treatment; however, the silencing or overexpression of DZIP1 in HeLa cells had no effect on the accumulation of the associated mRNAs. Polysomal profile analysis by sucrose gradient centrifugation demonstrated the presence of DZIP1 in the polysomal fraction. CONCLUSIONS Our results suggest that DZIP1 is part of an RNP complex that occupies various subcellular locations. The diversity of the mRNAs associated with DZIP1 suggests that this protein is a component of different RNPs associated with translating polysomes and with RNA granules.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Bruno Dallagiovanna
- Stem Cells Basic Biology Laboratory, Instituto Carlos Chagas, FIOCRUZ, Algacyr Munhoz Mader 3775, Curitiba 81350-010, Brazil.
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Zych J, Stimamiglio MA, Senegaglia AC, Brofman PRS, Dallagiovanna B, Goldenberg S, Correa A. The epigenetic modifiers 5-aza-2'-deoxycytidine and trichostatin A influence adipocyte differentiation in human mesenchymal stem cells. Braz J Med Biol Res 2014; 46:405-16. [PMID: 23797495 PMCID: PMC3854397 DOI: 10.1590/1414-431x20132893] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2012] [Accepted: 03/11/2013] [Indexed: 01/10/2023] Open
Abstract
Epigenetic mechanisms such as DNA methylation and histone modification are
important in stem cell differentiation. Methylation is principally associated
with transcriptional repression, and histone acetylation is correlated with an
active chromatin state. We determined the effects of these epigenetic mechanisms
on adipocyte differentiation in mesenchymal stem cells (MSCs) derived from bone
marrow (BM-MSCs) and adipose tissue (ADSCs) using the chromatin-modifying agents
trichostatin A (TSA), a histone deacetylase inhibitor, and
5-aza-2′-deoxycytidine (5azadC), a demethylating agent. Subconfluent MSC
cultures were treated with 5, 50, or 500 nM TSA or with 1, 10, or
100 µM 5azadC for 2 days before the initiation of adipogenesis. The
differentiation was quantified and expression of the adipocyte genes PPARG and
FABP4 and of the anti-adipocyte gene GATA2 was evaluated. TSA decreased
adipogenesis, except in BM-MSCs treated with 5 nM TSA. Only treatment
with 500 nM TSA decreased cell proliferation. 5azadC treatment decreased
proliferation and adipocyte differentiation in all conditions evaluated,
resulting in the downregulation of PPARG and FABP4 and the upregulation of
GATA2. The response to treatment was stronger in ADSCs than in BM-MSCs,
suggesting that epigenetic memories may differ between cells of different
origins. As epigenetic signatures affect differentiation, it should be possible
to direct the use of MSCs in cell therapies to improve process efficiency by
considering the various sources available.
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Affiliation(s)
- J Zych
- Laboratório de Biologia Básica de Células-Tronco, Instituto Carlos Chagas, FIOCRUZ, Curitiba, PR, Brasil.
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Alves LR, Guerra-Slompo EP, de Oliveira AV, Malgarin JS, Goldenberg S, Dallagiovanna B. mRNA localization mechanisms in Trypanosoma cruzi. PLoS One 2013; 8:e81375. [PMID: 24324687 PMCID: PMC3852752 DOI: 10.1371/journal.pone.0081375] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2013] [Accepted: 10/13/2013] [Indexed: 01/06/2023] Open
Abstract
Asymmetric mRNA localization is a sophisticated tool for regulating and optimizing protein synthesis and maintaining cell polarity. Molecular mechanisms involved in the regulated localization of transcripts are widespread in higher eukaryotes and fungi, but not in protozoa. Trypanosomes are ancient eukaryotes that branched off early in eukaryote evolution. We hypothesized that these organisms would have basic mechanisms of mRNA localization. FISH assays with probes against transcripts coding for proteins with restricted distributions showed a discrete localization of the mRNAs in the cytoplasm. Moreover, cruzipain mRNA was found inside reservosomes suggesting new unexpected functions for this vacuolar organelle. Individual mRNAs were also mobilized to RNA granules in response to nutritional stress. The cytoplasmic distribution of these transcripts changed with cell differentiation, suggesting that localization mechanisms might be involved in the regulation of stage-specific protein expression. Transfection assays with reporter genes showed that, as in higher eukaryotes, 3'UTRs were responsible for guiding mRNAs to their final location. Our results strongly suggest that Trypanosoma cruzi have a core, basic mechanism of mRNA localization. This kind of controlled mRNA transport is ancient, dating back to early eukaryote evolution.
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Affiliation(s)
- Lysangela R. Alves
- Laboratório de Regulação da Expressão Gênica, Instituto Carlos Chagas, Fiocruz-Paraná. Curitiba, Paraná, Brasil
| | - Eloise P. Guerra-Slompo
- Laboratório de Regulação da Expressão Gênica, Instituto Carlos Chagas, Fiocruz-Paraná. Curitiba, Paraná, Brasil
| | - Arthur V. de Oliveira
- Laboratório de Regulação da Expressão Gênica, Instituto Carlos Chagas, Fiocruz-Paraná. Curitiba, Paraná, Brasil
| | - Juliane S. Malgarin
- Laboratório de Regulação da Expressão Gênica, Instituto Carlos Chagas, Fiocruz-Paraná. Curitiba, Paraná, Brasil
| | - Samuel Goldenberg
- Laboratório de Regulação da Expressão Gênica, Instituto Carlos Chagas, Fiocruz-Paraná. Curitiba, Paraná, Brasil
| | - Bruno Dallagiovanna
- Laboratório de Regulação da Expressão Gênica, Instituto Carlos Chagas, Fiocruz-Paraná. Curitiba, Paraná, Brasil
- * E-mail:
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Spangenberg L, Correa A, Dallagiovanna B, Naya H. Role of alternative polyadenylation during adipogenic differentiation: an in silico approach. PLoS One 2013; 8:e75578. [PMID: 24143171 PMCID: PMC3797115 DOI: 10.1371/journal.pone.0075578] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2013] [Accepted: 08/14/2013] [Indexed: 01/22/2023] Open
Abstract
Post-transcriptional regulation of stem cell differentiation is far from being completely understood. Changes in protein levels are not fully correlated with corresponding changes in mRNAs; the observed differences might be partially explained by post-transcriptional regulation mechanisms, such as alternative polyadenylation. This would involve changes in protein binding, transcript usage, miRNAs and other non-coding RNAs. In the present work we analyzed the distribution of alternative transcripts during adipogenic differentiation and the potential role of miRNAs in post-transcriptional regulation. Our in silico analysis suggests a modest, consistent, bias in 3'UTR lengths during differentiation enabling a fine-tuned transcript regulation via small non-coding RNAs. Including these effects in the analyses partially accounts for the observed discrepancies in relative abundance of protein and mRNA.
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Affiliation(s)
- Lucía Spangenberg
- Bioinformatics Unit, Institut Pasteur Montevideo, Montevideo, Uruguay
| | - Alejandro Correa
- Instituto Carlos Chagas, Fiocruz-Paraná, Curitiba, Paraná, Brazil
| | | | - Hugo Naya
- Bioinformatics Unit, Institut Pasteur Montevideo, Montevideo, Uruguay
- Departamento de Producción Animal y Pasturas, Facultad de Agronomía, Universidad de la República
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Spangenberg L, Shigunov P, Abud APR, Cofré AR, Stimamiglio MA, Kuligovski C, Zych J, Schittini AV, Costa ADT, Rebelatto CK, Brofman PRS, Goldenberg S, Correa A, Naya H, Dallagiovanna B. Polysome profiling shows extensive posttranscriptional regulation during human adipocyte stem cell differentiation into adipocytes. Stem Cell Res 2013; 11:902-12. [PMID: 23845413 DOI: 10.1016/j.scr.2013.06.002] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/22/2012] [Revised: 05/29/2013] [Accepted: 06/02/2013] [Indexed: 12/31/2022] Open
Abstract
Adipocyte stem cells (hASCs) can proliferate and self-renew and, due to their multipotent nature, they can differentiate into several tissue-specific lineages, making them ideal candidates for use in cell therapy. Most attempts to determine the mRNA profile of self-renewing or differentiating stem cells have made use of total RNA for gene expression analysis. Several lines of evidence suggest that self-renewal and differentiation are also dependent on the control of protein synthesis by posttranscriptional mechanisms. We used adipogenic differentiation as a model, to investigate the extent to which posttranscriptional regulation controlled gene expression in hASCs. We focused on the initial steps of differentiation and isolated both the total mRNA fraction and the subpopulation of mRNAs associated with translating ribosomes. We observed that adipogenesis is committed in the first days of induction and three days appears as the minimum time of induction necessary for efficient differentiation. RNA-seq analysis showed that a significant percentage of regulated mRNAs were posttranscriptionally controlled. Part of this regulation involves massive changes in transcript untranslated regions (UTR) length, with differential extension/reduction of the 3'UTR after induction. A slight correlation can be observed between the expression levels of differentially expressed genes and the 3'UTR length. When we considered association to polysomes, this correlation values increased. Changes in the half lives were related to the extension of the 3'UTR, with longer UTRs mainly stabilizing the transcripts. Thus, changes in the length of these extensions may be associated with changes in the ability to associate with polysomes or in half-life.
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Affiliation(s)
- Lucia Spangenberg
- Unidad de Bioinformática, Institut Pasteur Montevideo, Mataojo 2020, Montevideo 11400, Uruguay
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Pérez-Díaz L, Pastro L, Smircich P, Dallagiovanna B, Garat B. Evidence for a negative feedback control mediated by the 3' untranslated region assuring the low expression level of the RNA binding protein TcRBP19 in T. cruzi epimastigotes. Biochem Biophys Res Commun 2013; 436:295-9. [PMID: 23743203 DOI: 10.1016/j.bbrc.2013.05.096] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2013] [Accepted: 05/23/2013] [Indexed: 01/02/2023]
Abstract
Because of their relevant role in the post-transcriptional regulation of the expression of a multitude of genes, RNA-binding proteins (RBPs) need to be accurately regulated in response to environmental signals in terms of quantity, functionality and localization. Transcriptional, post-transcriptional and post-translational steps have all been involved in this tight control. We have previously identified a Trypanosoma cruzi RBP, named TcRBP19, which can barely be detected at the replicative intracellular amastigote stage of the mammalian host. Even though protein coding genes are typically transcribed constitutively in trypanosomes, TcRBP19 protein is undetectable at the epimastigote stage. Here, we show that this protein expression pattern follows the steady-state of its mRNA. Using a T. cruzi reporter gene approach, we could establish a role for the 3' UTR of the tcrbp19 mRNA in transcript down-regulation at the epimastigote stage. In addition, the binding of the TcRBP19 protein to its encoding mRNA was revealed by in vitro pull down followed by qRT-PCR and confirmed by CLIP assays. Furthermore, we found that forced over-expression of TcRBP19 in T. cruzi epimastigotes decreased the stability of the endogenous tcrbp19 mRNA. These results support a negative feedback control of TcRBP19 to help maintain its very low concentration of TcRBP19 in the epimastigote stage. To our knowledge, this is the first RBP reported in trypanosomatids capable of negatively regulating its own mRNA. The mechanism revealed here adds to our limited but growing number of examples of negative mRNA autoregulation in the control of gene expression.
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Affiliation(s)
- Leticia Pérez-Díaz
- Laboratorio de Interacciones Moleculares, Facultad de Ciencias, Iguá 4225, 11400 Montevideo, Uruguay
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Reifur L, Garcia-Silva MR, Poubel SB, Alves LR, Arauco P, Buiar DK, Goldenberg S, Cayota A, Dallagiovanna B. Distinct subcellular localization of tRNA-derived fragments in the infective metacyclic forms of Trypanosoma cruzi. Mem Inst Oswaldo Cruz 2013; 107:816-9. [PMID: 22990974 DOI: 10.1590/s0074-02762012000600018] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2011] [Accepted: 05/10/2012] [Indexed: 11/21/2022] Open
Abstract
Small non-coding RNAs derived from transfer RNAs have been identified as a broadly conserved prokaryotic and eukaryotic response to stress. Their presence coincides with changes in developmental state associated with gene expression regulation. In the epimastigote form of Trypanosoma cruzi, tRNA fragments localize to posterior cytoplasmic granules. In the infective metacyclic form of the parasite, we found tRNA-derived fragments to be abundant and evenly distributed within the cytoplasm. The fragments were not associated with polysomes, suggesting that the tRNA-derived fragments may not be directly involved in translation control in metacyclics.
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Pérez-Díaz L, Correa A, Moretão MP, Goldenberg S, Dallagiovanna B, Garat B. The overexpression of the trypanosomatid-exclusive TcRBP19 RNA-binding protein affects cellular infection by Trypanosoma cruzi. Mem Inst Oswaldo Cruz 2012; 107:1076-9. [DOI: 10.1590/s0074-02762012000800021] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2012] [Accepted: 10/31/2012] [Indexed: 01/18/2023] Open
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Mörking PA, Rampazzo RDCP, Walrad P, Probst CM, Soares MJ, Gradia DF, Pavoni DP, Krieger MA, Matthews K, Goldenberg S, Fragoso SP, Dallagiovanna B. The zinc finger protein TcZFP2 binds target mRNAs enriched during Trypanosoma cruzi metacyclogenesis. Mem Inst Oswaldo Cruz 2012; 107:790-9. [DOI: 10.1590/s0074-02762012000600014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2011] [Accepted: 04/12/2012] [Indexed: 11/22/2022] Open
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40
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Guerra-Slompo EP, Probst CM, Pavoni DP, Goldenberg S, Krieger MA, Dallagiovanna B. Molecular characterization of the Trypanosoma cruzi specific RNA binding protein TcRBP40 and its associated mRNAs. Biochem Biophys Res Commun 2012; 420:302-7. [PMID: 22425988 DOI: 10.1016/j.bbrc.2012.02.154] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2012] [Accepted: 02/29/2012] [Indexed: 01/25/2023]
Abstract
Trypanosoma cruzi is the causative agent of Chagas disease, a neglected disorder that affects millions of people in the Americas. T. cruzi relies mostly upon post-transcriptional regulation to control stage specific gene expression. RNA binding proteins (RBPs) associate with functionally related mRNAs forming ribonucleoprotein complexes that define post-transcriptional operons. The RNA Recognition Motif (RRM) is the most common and ancient family of RBPs. This family of RBPs has been identified in trypanosomatid parasites and only a few of them have been functionally characterized. We describe here the functional characterization of TcRBP40, a T. cruzi specific RBP, and its associated mRNAs. We used a modified version of the recombinant RIP-Chip assay to identify the mRNAs with which it associates and in vivo TAP-tag assays to confirm these results. TcRBP40 binds to an AG-rich sequence in the 3'UTR of the associated mRNAs, which were found to encode mainly putative transmembrane proteins. TcRBP40 is differentially expressed in metacyclogenesis. Surprisingly, in epimastigotes, it is dispersed in the cytoplasm but is concentrated in the reservosomes, a T. cruzi specific organelle, which suggests a putative new function for this parasite organelle.
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Affiliation(s)
- Eloise P Guerra-Slompo
- Instituto Carlos Chagas, Fiocruz-Paraná, Rua Professor Algacyr Munhoz Mader 3775, 81350-010 CIC Curitiba, Brazil
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Shigunov P, Sotelo-Silveira J, Kuligovski C, de Aguiar AM, Rebelatto CK, Moutinho JA, Brofman PS, Krieger MA, Goldenberg S, Munroe D, Correa A, Dallagiovanna B. PUMILIO-2 is involved in the positive regulation of cellular proliferation in human adipose-derived stem cells. Stem Cells Dev 2011; 21:217-27. [PMID: 21649561 DOI: 10.1089/scd.2011.0143] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Stem cells can either differentiate into more specialized cells or undergo self-renewal. Several lines of evidence from different organisms suggest that these processes depend on the post-transcriptional regulation of gene expression. The presence of the PUF [Pumilio/FBF (fem-3 binding factor)] domain defines a conserved family of RNA binding proteins involved in repressing gene expression. It has been suggested that a conserved function of PUF proteins is to repress differentiation and sustain the mitotic proliferation of stem cells. In humans, Pumilio-2 (PUM2) is expressed in embryonic stem cells and adult germ cells. Here we show that PUM2 is expressed in a subpopulation of adipose-derived stem cell (ASC) cultures, with a granular pattern of staining in the cytoplasm. Protein levels of PUM2 showed no changes during the differentiation of ASCs into adipocytes. Moreover, RNAi knockdown of pum2 did not alter the rate of adipogenic differentiation compared with wild-type control cells. A ribonomic approach was used to identify PUM2-associated mRNAs. Microarray analysis showed that PUM2-bound mRNAs are part of gene networks involved in cell proliferation and gene expression control. We studied pum2 expression in cell cultures with low or very high levels of proliferation and found that changes in pum2 production were dependent on the proliferation status of the cell. Transient knockdown of pum2 expression by RNAi impaired proliferation of ASCs in vitro. Our results suggest that PUM2 does not repress differentiation of ASCs but rather is involved in the positive control of ASCs division and proliferation.
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Affiliation(s)
- Patrícia Shigunov
- Laboratório de Biologia Básica de Células-Tronco, Instituto Carlos Chagas, Curitiba, Brazil
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Aguiar AMD, Kuligovski C, Costa MTBAD, Stimamiglio MA, Rebelatto CLK, Senegaglia AC, Brofman PRS, Dallagiovanna B, Goldenberg S, Correa A. Alkaline phosphatase-positive cells isolated from human hearts have mesenchymal stem cell characteristics. ACTA ACUST UNITED AC 2011. [DOI: 10.4236/scd.2011.13008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Schittini AV, Celedon PF, Stimamiglio MA, Krieger M, Hansen P, da Costa FDA, Goldenberg S, Dallagiovanna B, Correa A. Human cardiac explant-conditioned medium: soluble factors and cardiomyogenic effect on mesenchymal stem cells. Exp Biol Med (Maywood) 2010; 235:1015-24. [PMID: 20660100 DOI: 10.1258/ebm.2010.010003] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The use of conditioned medium (CM) from human cardiac explants (HCEs) as a potential source of paracrine factors for adult stem cell signaling has never been evaluated. We hypothesized that HCEs might provide a source of soluble factors triggering the differentiation of mesenchymal stem cells (MSCs) into cardiomyocyte-like cells. By using two-dimensional electrophoresis (2-DE) gels/mass spectrometry and antibody macroarray assays, we found that HCEs release macromolecules, including cytokines, growth factors and myocardial and metabolism-related proteins into the culture medium. We identified a total of 20 proteins in the HCE-CM. However, as shown by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and 2-DE, these 20 proteins account for only a fraction of the total number of proteins present in the HCE-CM. We also found that CM increased the proliferation of bone marrow-derived-MSCs (BM-MSCs) in vitro. Unlike the other effects, this effect was most evident after 48 h of culture. Moreover, we examined the effect of HCE-CM on levels of mRNA and protein for specific cardiac markers. We showed that a surprisingly big fraction of BM-MSCs (3.4-5.0%) treated in vitro with HCE-CM became elongated and began to express cardiac markers, consistent with their possible differentiation into cardiomyocyte-like cells. Our in vitro model may be useful not only per se, but also for studies of the mechanisms of action of soluble factors involved in cell differentiation, paving the way for possible new protein-based treatments in the future.
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Holetz FB, Alves LR, Probst CM, Dallagiovanna B, Marchini FK, Manque P, Buck G, Krieger MA, Correa A, Goldenberg S. Protein and mRNA content of TcDHH1-containing mRNPs in Trypanosoma cruzi. FEBS J 2010; 277:3415-26. [PMID: 20629747 DOI: 10.1111/j.1742-4658.2010.07747.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
In trypanosomatids, the regulation of gene expression occurs mainly at the post-transcriptional level. Previous studies have revealed nontranslated mRNA in the Trypanosoma cruzi cytoplasm. Previously, we have identified and cloned the TcDHH1 protein, a DEAD box RNA helicase. It has been reported that Dhh1 is involved in multiple RNA-related processes in various eukaryotes. It has also been reported to accumulate in stress granules and processing bodies of yeast, animal cells, Trypanosoma brucei and T. cruzi. TcDHH1 is localized to discrete cytoplasmic foci that vary depending on the life cycle status and nutritional conditions. To study the composition of mRNPs containing TcDHH1, we carried out immunoprecipitation assays with anti-TcDHH1 using epimastigote lysates. The protein content of mRNPs was determined by MS and pre-immune serum was used as control. We also carried out a ribonomic approach to identify the mRNAs present within the TcDHH1 immunoprecipitated complexes. For this purpose, competitive microarray hybridizations were performed against negative controls, the nonprecipitated fraction. Our results showed that mRNAs associated with TcDHH1 in the epimastigote stage are those mainly expressed in the other forms of the T. cruzi life cycle. These data suggest that mRNPs containing TcDHH1 are involved in mRNA metabolism, regulating the expression of at least epimastigote-specific genes.
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Senegaglia AC, Barboza LA, Dallagiovanna B, Aita CAM, Hansen P, Rebelatto CLK, Aguiar AM, Miyague NI, Shigunov P, Barchiki F, Correa A, Olandoski M, Krieger MA, Brofman PRS. Are purified or expanded cord blood-derived CD133+ cells better at improving cardiac function? Exp Biol Med (Maywood) 2010; 235:119-29. [PMID: 20404026 DOI: 10.1258/ebm.2009.009194] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Endothelial progenitor cells (EPCs), which express the CD133 marker, can differentiate into mature endothelial cells (ECs) and create new blood vessels. Normal angiogenesis is unable to repair the injured tissues that result from myocardial infarction (MI). Patients who have high cardiovascular risks have fewer EPCs and their EPCs exhibit greater in vitro senescence. Human umbilical cord blood (HUCB)-derived EPCs could be an alternative to rescue impaired stem cell function in the sick and elderly. The aim of this study was to purify HUCB-derived CD133(+) cells, expand them in vitro and evaluate the efficacy of the purified and expanded cells in treating MI in rats. CD133(+) cells were selected for using CD133-coupled magnetic microbeads. Purified cells stained positive for EPC markers. The cells were expanded and differentiated in media supplemented with fetal calf serum and basic fibroblast growth factor, insulin-like growth factor-I and vascular endothelial growth factor (VEGF). Differentiation was confirmed by lack of staining for EPC markers. These expanded cells exhibited increased expression of mature EC markers and formed tubule-like structures in vitro. Only the expanded cells expressed VEGF mRNA. Cells were expanded up to 70-fold during 60 days of culture, and they retained their functional activity. Finally, we evaluated the therapeutic potential of purified and expanded CD133(+) cells in treating MI by intramyocardially injecting them into a rat model of MI. Rats were divided into three groups: A (purified CD133(+) cells-injected); B (expanded CD133(+) cells-injected) and C (saline buffer-injected). We observed a significant improvement in left ventricular ejection fraction for groups A and B. In summary, CD133(+) cells can be purified from HUCB, expanded in vitro without loosing their biological activity, and both purified and expanded cells show promising results for use in cellular cardiomyoplasty. However, further pre-clinical testing should be performed to determine whether expanded CD133(+) cells have any clinical advantages over purified CD133(+) cells.
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Affiliation(s)
- Alexandra C Senegaglia
- Pontifícia Universidade Católica do Paraná, Institute for Health and Biological Sciences, Rua Imaculada Conceição, 1155 Curitiba, Paraná, 80215901, Brazil.
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da Silva CV, Kawashita SY, Probst CM, Dallagiovanna B, Cruz MC, da Silva EA, Souto-Padrón TCBS, Krieger MA, Goldenberg S, Briones MRS, Andrews NW, Mortara RA. Characterization of a 21kDa protein from Trypanosoma cruzi associated with mammalian cell invasion. Microbes Infect 2009; 11:563-70. [PMID: 19344784 DOI: 10.1016/j.micinf.2009.03.007] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2008] [Revised: 02/27/2009] [Accepted: 03/06/2009] [Indexed: 11/18/2022]
Abstract
Trypanosoma cruzi genomic database was screened for hypothetical proteins that showed high probability of being secreted or membrane anchored and thus, likely involved in host-cell invasion. A sequence that codes for a 21kDa protein that showed high probability of being secreted was selected. After cloning this protein sequence, the results showed that it was a ubiquitous protein and secreted by extracellular amastigotes. The recombinant form (P21-His(6)) adhered to HeLa cells in a dose-dependent manner. Pretreatment of host cells with P21-His(6) inhibited cell invasion by extracellular amastigotes from G and CL strains. On the other hand, when the protein was added to host cells at the same time as amastigotes, an increase in cell invasion was observed. Host-cell pretreatment with P21-His(6) augmented invasion by metacyclic trypomastigotes. Moreover, polyclonal antibody anti-P21 inhibited invasion only by extracellular amastigotes and metacyclic trypomastigotes from G strain. These results suggested that P21 might be involved in T. cruzi cell invasion. We hypothesize that P21 could be secreted in the juxtaposition parasite-host cell and triggers signaling events yet unknown that lead to parasite internalization.
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Affiliation(s)
- Claudio V da Silva
- Departamento de Microbiologia, Imunologia e Parasitologia, Universidade Federal de São Paulo, São Paulo, SP, Brazil
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Duhagon MA, Pastro L, Sotelo-Silveira JR, Pérez-Díaz L, Maugeri D, Nardelli SC, Schenkman S, Williams N, Dallagiovanna B, Garat B. The Trypanosoma cruzi nucleic acid binding protein Tc38 presents changes in the intramitochondrial distribution during the cell cycle. BMC Microbiol 2009; 9:34. [PMID: 19210781 PMCID: PMC2654453 DOI: 10.1186/1471-2180-9-34] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2008] [Accepted: 02/11/2009] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Tc38 of Trypanosoma cruzi has been isolated as a single stranded DNA binding protein with high specificity for the poly [dT-dG] sequence. It is present only in Kinetoplastidae protozoa and its sequence lacks homology to known functional domains. Tc38 orthologues present in Trypanosoma brucei and Leishmania were proposed to participate in quite different cellular processes. To further understand the function of this protein in Trypanosoma cruzi, we examined its in vitro binding to biologically relevant [dT-dG] enriched sequences, its expression and subcellular localization during the cell cycle and through the parasite life stages. RESULTS By using specific antibodies, we found that Tc38 protein from epimastigote extracts participates in complexes with the poly [dT-dG] probe as well as with the universal minicircle sequence (UMS), a related repeated sequence found in maxicircle DNA, and the telomeric repeat. However, we found that Tc38 predominantly localizes into the mitochondrion. Though Tc38 is constitutively expressed through non-replicating and replicating life stages of T. cruzi, its subcellular localization in the unique parasite mitochondrion changes according to the cell cycle stage. In epimastigotes, Tc38 is found only in association with kDNA in G1 phase. From the S to G2 phase the protein localizes in two defined and connected spots flanking the kDNA. These spots disappear in late G2 turning into a diffuse dotted signal which extends beyond the kinetoplast. This later pattern is more evident in mitosis and cytokinesis. Finally, late in cytokinesis Tc38 reacquires its association with the kinetoplast. In non-replicating parasite stages such as trypomastigotes, the protein is found only surrounding the entire kinetoplast structure. CONCLUSIONS The dynamics of Tc38 subcellular localization observed during the cell cycle and life stages support a major role for Tc38 related to kDNA replication and maintenance.
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Affiliation(s)
- María A Duhagon
- Laboratorio de Interacciones Moleculares, Facultad de Ciencias, Montevideo, Uruguay.
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Senegaglia AC, Brofman PRS, Aita CAM, Dallagiovanna B, Rebelatto CLK, Hansen P, Barchiki F, Krieger MA. Formação in vitro de túbulos capilares a partir de células de sangue de cordão umbilical humano com perspectivas para aplicação terapêutica. Braz J Cardiovasc Surg 2008; 23:467-73. [DOI: 10.1590/s0102-76382008000400003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2008] [Accepted: 09/23/2008] [Indexed: 11/21/2022] Open
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Giese V, Dallagiovanna B, Marchini FK, Pavoni DP, Krieger MA, Goldenberg S. Trypanosoma cruzi: a stage-specific calpain-like protein is induced after various kinds of stress. Mem Inst Oswaldo Cruz 2008; 103:598-601. [DOI: 10.1590/s0074-02762008000600015] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2008] [Accepted: 08/13/2008] [Indexed: 11/22/2022] Open
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Dallagiovanna B, Correa A, Probst CM, Holetz F, Smircich P, de Aguiar AM, Mansur F, da Silva CV, Mortara RA, Garat B, Buck GA, Goldenberg S, Krieger MA. Functional genomic characterization of mRNAs associated with TcPUF6, a pumilio-like protein from Trypanosoma cruzi. J Biol Chem 2008; 283:8266-73. [PMID: 18056709 PMCID: PMC2276385 DOI: 10.1074/jbc.m703097200] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2007] [Revised: 12/04/2007] [Indexed: 11/06/2022] Open
Abstract
Trypanosoma cruzi is the protozoan parasite that causes Chagas disease or American trypanosomiasis. Kinetoplastid parasites could be considered as model organisms for studying factors involved in posttranscriptional regulation because they control gene expression almost exclusively at this level. The PUF (Pumilio/FBF1) protein family regulates mRNA stability and translation in eukaryotes, and several members have been identified in trypanosomatids. We used a ribonomic approach to identify the putative target mRNAs associated with TcPUF6, a member of the T. cruzi PUF family. TcPUF6 is expressed in discrete sites in the cytoplasm at various stages of the parasite life cycle and is not associated with the translation machinery. The overexpression of a tandem affinity purification-tagged TcPUF6 protein allowed the identification of associated mRNAs by affinity purification assays and microarray hybridization yielding nine putative target mRNAs. Whole expression analysis of transfected parasites showed that the mRNAs associated with TcPUF6 were down-regulated in populations overexpressing TcPUF6. The association of TcPUF6 with the TcDhh1 helicase in vivo and the cellular co-localization of these proteins in epimastigote forms suggest that TcPUF6 promotes degradation of its associated mRNAs through interaction with RNA degradation complexes. Analysis of the mRNA levels of the putative TcPUF6-regulated genes during the parasite life cycle showed that their transcripts were up-regulated in metacyclic trypomastigotes. In these infective forms no co-localization between TcPUF6 and TcDhh1 was observed. Our results suggest that TcPUF6 regulates the half-lives of its associated transcripts via differential association with mRNA degradation complexes throughout its life cycle.
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Affiliation(s)
- Bruno Dallagiovanna
- Instituto de Biologia Molecular do Paraná, Rua Professor Algacyr Munhoz Mader 3775, Curitiba, PR, Brazil
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