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Registro Completo |
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Biblioteca(s): |
Embrapa Agricultura Digital; Embrapa Pecuária Sudeste. |
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Data corrente: |
02/12/2010 |
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Data da última atualização: |
27/01/2020 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
GIACHETTO, P. F.; YAMAGISHI, M. E. B.; SANTOS, E. H. dos; IBELLI, A. M. G.; REGITANO, L. C. de A. |
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Afiliação: |
POLIANA FERNANDA GIACHETTO, CNPTIA; MICHEL EDUARDO BELEZA YAMAGISHI, CNPTIA; EDGARD HENRIQUE DOS SANTOS, CNPTIA; ADRIANA MERCIA GUARATINI IBELLI, CPPSE; LUCIANA CORREIA DE ALMEIDA REGITANO, CPPSE. |
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Título: |
Transcriptional networks reconstruction: identification of genes involved on cattle response to tick Rhipicephalus (Boophilus) microplus infestation. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
In: INTERNATIONAL CONFERENCE OF THE BRAZILIAN ASSOCIATION FOR BIOINFORMATICS AND COMPUTATIONAL BIOLOGY, 6., 2010, Ouro Preto. Abstracts... [S.l.: s.n.], 2010. |
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Páginas: |
p. 154. |
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Idioma: |
Inglês |
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Notas: |
Na publicação: Regitano, L.C.A. X-meeting 2010. |
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Conteúdo: |
In tropical countries, losses caused by tick infestation in cattle lead to a great impact on animal production systems. Weight and feed conversion reduction, together with diseases transmitted by the parasite are some of the problems that lead to economic losses of billion dollars a year. In a general way, Bos taurus indicus cattle are less susceptible to infestation with Rhipicephalus (Boophilus) microplus than Bos taurus taurus cattle but the immunological basis of this difference is not understood. Since we are interested in finding genes that may be involved in mechanism of bovine response to tick for use in animal breeding, we investigated transcriptional networks in the response of these different genotypes of cattle to tick infestation. Recent studies show that co-expression networks can be used to identify a set of candidate genes underlying specific phenotypes and some gene co-expression network methods have been successfully applied in a variety of studies. In this study, Weighted Gene Co-expression Network Analysis (WGCNA) was applied, using microarray expression data. This systems biology analysis method starts out by identification of modules of genes based on patterns of gene co-expression, defined as sets of highly correlated (connected) genes, which may represent molecular networks involved in a common biological pathway. Genes highly connected within these modules are thought to drive the group, and are considered to be hub genes . Skin samples were collected from bovines of different genotypes before (BI) and after (AI) artificial tick infestation and mRNA used for GeneChip Bovine Genome Array hybridization. Microarray data were processed using affy /Bioconductor software package. We follow a general framework for constructing gene co-expression networks and used the WGCNA R package. The power adjacency function was applied to the co-expression measurement, the absolute Pearson correlation coefficient, to derive the adjacency matrix; we used a soft thresholding approach by raising each correlation to a fixed power (?=6). Modules were defined using the dynamic hybrid tree cutting algorithm of the dynamicTreeCut R package. Our analysis identified 8 modules. Each of the modules was labeled with a unique color as an identifier and characterized for enrichment of functionally-related genes. Interesting modules were defined as those enriched with genes involved in immune response and containing differentialy expressed genes (DEG), wigh were identified separately in each module. The blue module (n=220 genes) was enriched for genes belonging to Chemokine signaling pathway , Focal adhesion and Cell adhesion molecules pathways, and had the greatest number of DEG. These DEG, together with the hub genes inside the blue module are candidate genes elected for further studies aiming the understanding of mechanisms involved in tick tolerance by cattle. Supported by: Embrapa, CNPq. MenosIn tropical countries, losses caused by tick infestation in cattle lead to a great impact on animal production systems. Weight and feed conversion reduction, together with diseases transmitted by the parasite are some of the problems that lead to economic losses of billion dollars a year. In a general way, Bos taurus indicus cattle are less susceptible to infestation with Rhipicephalus (Boophilus) microplus than Bos taurus taurus cattle but the immunological basis of this difference is not understood. Since we are interested in finding genes that may be involved in mechanism of bovine response to tick for use in animal breeding, we investigated transcriptional networks in the response of these different genotypes of cattle to tick infestation. Recent studies show that co-expression networks can be used to identify a set of candidate genes underlying specific phenotypes and some gene co-expression network methods have been successfully applied in a variety of studies. In this study, Weighted Gene Co-expression Network Analysis (WGCNA) was applied, using microarray expression data. This systems biology analysis method starts out by identification of modules of genes based on patterns of gene co-expression, defined as sets of highly correlated (connected) genes, which may represent molecular networks involved in a common biological pathway. Genes highly connected within these modules are thought to drive the group, and are considered to be hub genes . Skin samples were collecte... Mostrar Tudo |
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Palavras-Chave: |
Dados de microarranjos. |
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Thesagro: |
Gado; Genética Animal. |
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Thesaurus Nal: |
Animal genetics; Rhipicephalus microplus. |
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Categoria do assunto: |
--
H Saúde e Patologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/23811/1/p154-out.pdf
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Marc: |
LEADER 03873nam a2200241 a 4500
001 1868527
005 2020-01-27
008 2010 bl uuuu u00u1 u #d
100 1 $aGIACHETTO, P. F.
245 $aTranscriptional networks reconstruction$bidentification of genes involved on cattle response to tick Rhipicephalus (Boophilus) microplus infestation.$h[electronic resource]
260 $aIn: INTERNATIONAL CONFERENCE OF THE BRAZILIAN ASSOCIATION FOR BIOINFORMATICS AND COMPUTATIONAL BIOLOGY, 6., 2010, Ouro Preto. Abstracts... [S.l.: s.n.], 2010.$c2010
300 $ap. 154.
500 $aNa publicação: Regitano, L.C.A. X-meeting 2010.
520 $aIn tropical countries, losses caused by tick infestation in cattle lead to a great impact on animal production systems. Weight and feed conversion reduction, together with diseases transmitted by the parasite are some of the problems that lead to economic losses of billion dollars a year. In a general way, Bos taurus indicus cattle are less susceptible to infestation with Rhipicephalus (Boophilus) microplus than Bos taurus taurus cattle but the immunological basis of this difference is not understood. Since we are interested in finding genes that may be involved in mechanism of bovine response to tick for use in animal breeding, we investigated transcriptional networks in the response of these different genotypes of cattle to tick infestation. Recent studies show that co-expression networks can be used to identify a set of candidate genes underlying specific phenotypes and some gene co-expression network methods have been successfully applied in a variety of studies. In this study, Weighted Gene Co-expression Network Analysis (WGCNA) was applied, using microarray expression data. This systems biology analysis method starts out by identification of modules of genes based on patterns of gene co-expression, defined as sets of highly correlated (connected) genes, which may represent molecular networks involved in a common biological pathway. Genes highly connected within these modules are thought to drive the group, and are considered to be hub genes . Skin samples were collected from bovines of different genotypes before (BI) and after (AI) artificial tick infestation and mRNA used for GeneChip Bovine Genome Array hybridization. Microarray data were processed using affy /Bioconductor software package. We follow a general framework for constructing gene co-expression networks and used the WGCNA R package. The power adjacency function was applied to the co-expression measurement, the absolute Pearson correlation coefficient, to derive the adjacency matrix; we used a soft thresholding approach by raising each correlation to a fixed power (?=6). Modules were defined using the dynamic hybrid tree cutting algorithm of the dynamicTreeCut R package. Our analysis identified 8 modules. Each of the modules was labeled with a unique color as an identifier and characterized for enrichment of functionally-related genes. Interesting modules were defined as those enriched with genes involved in immune response and containing differentialy expressed genes (DEG), wigh were identified separately in each module. The blue module (n=220 genes) was enriched for genes belonging to Chemokine signaling pathway , Focal adhesion and Cell adhesion molecules pathways, and had the greatest number of DEG. These DEG, together with the hub genes inside the blue module are candidate genes elected for further studies aiming the understanding of mechanisms involved in tick tolerance by cattle. Supported by: Embrapa, CNPq.
650 $aAnimal genetics
650 $aRhipicephalus microplus
650 $aGado
650 $aGenética Animal
653 $aDados de microarranjos
700 1 $aYAMAGISHI, M. E. B.
700 1 $aSANTOS, E. H. dos
700 1 $aIBELLI, A. M. G.
700 1 $aREGITANO, L. C. de A.
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Registro original: |
Embrapa Agricultura Digital (CNPTIA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
14/01/2020 |
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Data da última atualização: |
06/02/2024 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
FREITAS, V. J. F.; CAMPELO, I. S.; SILVA, M. M. A. S.; CAVALCANTI, C. M.; TEIXEIRA, D. I. A.; CAMARGO, L. S. de A.; MELO L. M.; RÁDIS-BAPTISTA, G. |
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Afiliação: |
Vicente J. F. Freitas; Iana S. Campelo; Mirelly M .A. S. Silva; Camila M. Cavalcanti; Dárcio I. A. Teixeira; LUIZ SERGIO DE ALMEIDA CAMARGO, CNPGL; Luciana M. Melo; Gandhi Rádis-Baptista. |
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Título: |
Disulphide-less crotamine is effective for formation of DNA-peptide complex but is unable to improve bovine embryo transfection. |
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Ano de publicação: |
2020 |
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Fonte/Imprenta: |
Zygote, v. 28, n. 1, p. 72-79, 2020. |
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DOI: |
https://doi.org/10.1017/s0967199419000716 |
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Idioma: |
Inglês |
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Conteúdo: |
This study aimed to investigate the ability of disulphide-less crotamine (dLCr) to complex DNA and to evaluate whether the DNA-dLCr complex is capable of improving transfection in bovine embryos. Three experiments were performed to: (i) evaluate the formation and stability of the DNA-dLCr complex; (ii) assess the dLCr embryotoxicity by exposure of bovine embryos to dLCr; and (iii) assess the efficiency of bovine embryo transfection after microinjection of the DNA-dLCr complex or green fluorescent protein (GFP) plasmid alone (control). DNA complexation by dLCr after 30 min of incubation at 1:100 and 1:50 proportions presented higher efficiency (P < 0.05) than the two controls: native crotamine (NCr) 1:10 and lipofectamine. There was no difference between DNA-dLCr 1:25 and the controls. The DNA-dLCr complexation was evaluated at different proportions and times. In all, at least half of maximum complexation was achieved within the initial 30 min. No embryotoxicity of dLCr was verified after exposure of in vitro fertilized embryos to different concentrations of the peptide. The effectiveness of dLCr to improve exogenous gene expression was evaluated by microinjection of the DNA-dLCr complex into in vitro fertilized zygotes, followed by verification of both embryo development and GFP expression. From embryos microinjected with DNA only, 4.6% and 2.8% expressed the GFP transgene at day 5 and day 7, respectively. The DNA-dLCr complex did not increase the number of GFP-positive embryos. In conclusion, dLCr forms a complex with DNA and its application in in vitro culture is possible. However, the dLCr peptide sequence should be redesigned to improve GFP expression. MenosThis study aimed to investigate the ability of disulphide-less crotamine (dLCr) to complex DNA and to evaluate whether the DNA-dLCr complex is capable of improving transfection in bovine embryos. Three experiments were performed to: (i) evaluate the formation and stability of the DNA-dLCr complex; (ii) assess the dLCr embryotoxicity by exposure of bovine embryos to dLCr; and (iii) assess the efficiency of bovine embryo transfection after microinjection of the DNA-dLCr complex or green fluorescent protein (GFP) plasmid alone (control). DNA complexation by dLCr after 30 min of incubation at 1:100 and 1:50 proportions presented higher efficiency (P < 0.05) than the two controls: native crotamine (NCr) 1:10 and lipofectamine. There was no difference between DNA-dLCr 1:25 and the controls. The DNA-dLCr complexation was evaluated at different proportions and times. In all, at least half of maximum complexation was achieved within the initial 30 min. No embryotoxicity of dLCr was verified after exposure of in vitro fertilized embryos to different concentrations of the peptide. The effectiveness of dLCr to improve exogenous gene expression was evaluated by microinjection of the DNA-dLCr complex into in vitro fertilized zygotes, followed by verification of both embryo development and GFP expression. From embryos microinjected with DNA only, 4.6% and 2.8% expressed the GFP transgene at day 5 and day 7, respectively. The DNA-dLCr complex did not increase the number of GFP-positive embr... Mostrar Tudo |
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Palavras-Chave: |
Gene delivery; Microinjection; Nucleic acid-peptide complex. |
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Thesaurus NAL: |
Embryotoxicity; Transgenesis. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02565naa a2200277 a 4500
001 2118715
005 2024-02-06
008 2020 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1017/s0967199419000716$2DOI
100 1 $aFREITAS, V. J. F.
245 $aDisulphide-less crotamine is effective for formation of DNA-peptide complex but is unable to improve bovine embryo transfection.$h[electronic resource]
260 $c2020
520 $aThis study aimed to investigate the ability of disulphide-less crotamine (dLCr) to complex DNA and to evaluate whether the DNA-dLCr complex is capable of improving transfection in bovine embryos. Three experiments were performed to: (i) evaluate the formation and stability of the DNA-dLCr complex; (ii) assess the dLCr embryotoxicity by exposure of bovine embryos to dLCr; and (iii) assess the efficiency of bovine embryo transfection after microinjection of the DNA-dLCr complex or green fluorescent protein (GFP) plasmid alone (control). DNA complexation by dLCr after 30 min of incubation at 1:100 and 1:50 proportions presented higher efficiency (P < 0.05) than the two controls: native crotamine (NCr) 1:10 and lipofectamine. There was no difference between DNA-dLCr 1:25 and the controls. The DNA-dLCr complexation was evaluated at different proportions and times. In all, at least half of maximum complexation was achieved within the initial 30 min. No embryotoxicity of dLCr was verified after exposure of in vitro fertilized embryos to different concentrations of the peptide. The effectiveness of dLCr to improve exogenous gene expression was evaluated by microinjection of the DNA-dLCr complex into in vitro fertilized zygotes, followed by verification of both embryo development and GFP expression. From embryos microinjected with DNA only, 4.6% and 2.8% expressed the GFP transgene at day 5 and day 7, respectively. The DNA-dLCr complex did not increase the number of GFP-positive embryos. In conclusion, dLCr forms a complex with DNA and its application in in vitro culture is possible. However, the dLCr peptide sequence should be redesigned to improve GFP expression.
650 $aEmbryotoxicity
650 $aTransgenesis
653 $aGene delivery
653 $aMicroinjection
653 $aNucleic acid-peptide complex
700 1 $aCAMPELO, I. S.
700 1 $aSILVA, M. M. A. S.
700 1 $aCAVALCANTI, C. M.
700 1 $aTEIXEIRA, D. I. A.
700 1 $aCAMARGO, L. S. de A.
700 1 $aMELO L. M.
700 1 $aRÁDIS-BAPTISTA, G.
773 $tZygote$gv. 28, n. 1, p. 72-79, 2020.
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