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| Registros recuperados : 10 | |
| 2. |  | WADT, P. G. S.; SILVA, D. J.; PRADO, R. M. Diagnosis and recomendation integrated system application mango. In: VALAVI, S. G.; RAJMOHAN, K.; GOLVI, J. N.; PETER, K. V.; THOTTAPPILLY, G. Mango: cultivation in different countries. Houston: Studium Press LLC, 2012. v. 1, cap. 18, p. 320-330.| Biblioteca(s): Embrapa Semiárido. |
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| 3. | | PRADO, R. M.; CAIONE, G.; SILVA, D. J. Macronutrient and micronutrient deficiency symptoms in mango. In: VALAVI, S. G.; RAJMOHAN, K.; GOLVI, J. N.; PETER, K. V.; THOTTAPPILLY, G. Mango: cultivation in different countries. Houston: Studium Press LLC, 2012. v. 1, cap. 30, p. 470-478.| Biblioteca(s): Embrapa Semiárido. |
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| 4. | | SILVA, D. J.; WADT, P. G. S.; PRADO, R. M. Mineral nutrition and fertilization of mango crops. In: VALAVI, S. G.; RAJMOHAN, K.; GOLVI, J. N.; PETER, K. V.; THOTTAPPILLY, G. Mango: production and processing technology. Houston: Studium Press LLC, 2012. v. 1, cap. 22, p. 384-394.| Biblioteca(s): Embrapa Acre; Embrapa Semiárido. |
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| 7. | | SILVA, E.; GRAÇA, J. P. da; PORTO, C.; PRADO, R. M.; HOFFMANN-CAMPO, C. B.; MEYER, M. C.; NUNES, E. de O.; PILAU, E. J. Unraveling Asian Soybean Rust metabolomics using mass spectrometry and Molecular Networking approach. Scientific Reports, v. 10, n. 138, 2020. 11 p.| Biblioteca(s): Embrapa Soja; Embrapa Suínos e Aves. |
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| 8. | | SILVA, E.; GRAÇA, J. P. da; PORTO, C.; PRADO, R. M. do; NUNES, E. de O.; MARCELINO-GUIMARÃES, F. C.; MEYER, M. C.; PILAU, E. J. Untargeted metabolomics analysis by UHPLC-MS/MS of soybean plant in a compatible response to Phakopsora pachyrhizi infection. Metabolites, v. 11, n. 3, 179, 2021. 15 p.| Biblioteca(s): Embrapa Soja; Embrapa Suínos e Aves. |
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| 9. | | TRASPADINI, E. I. F.; PRADO, R. M.; VAZ, G. J.; SILVA, F. C. da; MANCINI, A. L.; SILVA, G. P. da; SANTOS, E. H. dos; WADT, P. G. S. Guia prático para aplicação do método da diagnose da composição nutricional (CND): exemplo de uso na cultura da cana-de-açúcar. Campinas: Embrapa Informática Agropecuária, 2018. 30 p. (Embrapa Informática Agropecuária. Documentos, 160).| Biblioteca(s): Embrapa Agricultura Digital; Embrapa Rondônia. |
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| 10. | | ZANZARIN, D. M.; HERNANDES, C. P.; LEME, L. M.; SILVA, E.; PORTO, C; PRADO, R. M. do; MEYER, M. C.; FAVORETO, L.; NUNES, E. de O.; PILAU, E. J. Metabolomics of soybean green stem and foliar retention (GSFR) disease using Mass Spectrometry and Molecular Networking. Rapid Communications in Mass Spectrometry, e8655, 2020. 8 p.| Biblioteca(s): Embrapa Soja. |
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| Registros recuperados : 10 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
18/09/2015 |
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Data da última atualização: |
01/03/2016 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
SILVA, C. G.; CUMPA, H. C. B.; FONSECA NETO, A. M. da; MARTINS, C. F.; BÁO, S. N. |
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Afiliação: |
HEIDI CHRISTINA BESSLER CUMPA, CPAC; ALVARO MORAES DA FONSECA NETO, CPAC; CARLOS FREDERICO MARTINS, CPAC; UNB. |
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Título: |
Effect of trichostatin a in cloned cattle embryo production by nuclear transfer with mesenchymal stem cells. |
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Ano de publicação: |
2015 |
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Fonte/Imprenta: |
Animal Reproduction, v. 12, n. 3, p. 812, Jul./Sept. 2015. |
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Idioma: |
Inglês |
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Conteúdo: |
Acetylation of histones is a major mechanism of genome epigenetic reprogramming of the gametes in order to establish a totipotent state to the normal development (Ikeda et al., Zygote 17, 209-215, 2009). The deacetylation is catalysed by histone deacetylases (HDAC) which remove acetyl groups and causes chromatin compaction and DNA segment silencing at this location (Johnstone, Nature Reviews Drug Discovery 1, 287-299, 2002). The trichostatin A (TSA) is an HDAC inhibitor that increases the amount of acetylated histones and the demethylation of DNA (Lee et al., Journal of Reproduction and Development 57, 34-42, 2011). In this sense, the drug has been used in an attempt to increase the production efficiency of embryos by nuclear transfer (NT). The objective of this study was to test the effect of TSA in exposure times of 20 and 25 hours in the culture of bovine embryos cloned by NT with mesenchymal stem cells (MSCs) derived from adipose tissue. A biopsy of skin and adipose tissue was collected from the perineal region of a female bovine Gir, at two months of age. The cells were isolated by the explant and cultured in Dulbeccos Modified Eagle Medium added with 10% fetal bovine serum. Cumulus-oocyte complexes recovered from slaughterhouse ovaries were matured for 18 h at 38.5°C and 5% CO2. The NT was then performed with the adipose tissue and the MSCs reconstructed embryos were subjected to culture with 50 nM TSA for 20 and 25 h, for 4 h in activation medium containing 6-DMAP and further for 16 or 21 h in medium cultivation. Subsequently, the embryos continued in culture in synthetic oviductal fluid (SOF) medium without TSA and the parthenogenetic control was performed in every manipulation. Five NT procedures were performed for each treatment (20 h, 25 h and without TSA). Fusion rates, cleavage and blastocyst production were compared by Tukey test (p <0.05). The cleavage rate of parthenogenetic embryos (93.45 ± 7.97) was higher than the cleavage rate of embryos without treatment (82.45 ± 5.59) but was statistically similar to embryos treated with 20 and 25 h (87.25 ± 8.41 and 85.54 ± 3.88, respectively). Still, there was no difference in cleavage rate between treated and untreated embryos. The blastocyst production rate on the seventh day of culture was superior to the parthenogenetic control (59.24 ± 11.75) compared to treatments for 20 h (36.22 ± 16.80), 25 h (33.66 ± 12.84) and without the use of TSA (32.70 ± 9.11), which did not differ. It can be concluded that the use of TSA had no significant effect in improving the rates of cleavage and development of bovine embryos by nuclear transfer with MSCs from adipose tissue. However, additional studies to evaluate the quality and embryos of the methylation pattern should be conducted to better understand the effects of TSA in embryos cloned with this cell type. MenosAcetylation of histones is a major mechanism of genome epigenetic reprogramming of the gametes in order to establish a totipotent state to the normal development (Ikeda et al., Zygote 17, 209-215, 2009). The deacetylation is catalysed by histone deacetylases (HDAC) which remove acetyl groups and causes chromatin compaction and DNA segment silencing at this location (Johnstone, Nature Reviews Drug Discovery 1, 287-299, 2002). The trichostatin A (TSA) is an HDAC inhibitor that increases the amount of acetylated histones and the demethylation of DNA (Lee et al., Journal of Reproduction and Development 57, 34-42, 2011). In this sense, the drug has been used in an attempt to increase the production efficiency of embryos by nuclear transfer (NT). The objective of this study was to test the effect of TSA in exposure times of 20 and 25 hours in the culture of bovine embryos cloned by NT with mesenchymal stem cells (MSCs) derived from adipose tissue. A biopsy of skin and adipose tissue was collected from the perineal region of a female bovine Gir, at two months of age. The cells were isolated by the explant and cultured in Dulbeccos Modified Eagle Medium added with 10% fetal bovine serum. Cumulus-oocyte complexes recovered from slaughterhouse ovaries were matured for 18 h at 38.5°C and 5% CO2. The NT was then performed with the adipose tissue and the MSCs reconstructed embryos were subjected to culture with 50 nM TSA for 20 and 25 h, for 4 h in activation medium containing 6-DMAP and... Mostrar Tudo |
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Palavras-Chave: |
Cloning; Epigenetic. |
|
Thesagro: |
Clonagem. |
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Thesaurus NAL: |
histone deacetylase. |
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Categoria do assunto: |
L Ciência Animal e Produtos de Origem Animal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/129960/1/34712.pdf
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|
Marc: |
LEADER 03483nam a2200205 a 4500
001 2024379
005 2016-03-01
008 2015 bl uuuu u00u1 u #d
100 1 $aSILVA, C. G.
245 $aEffect of trichostatin a in cloned cattle embryo production by nuclear transfer with mesenchymal stem cells.
260 $aAnimal Reproduction, v. 12, n. 3, p. 812, Jul./Sept. 2015.$c2015
520 $aAcetylation of histones is a major mechanism of genome epigenetic reprogramming of the gametes in order to establish a totipotent state to the normal development (Ikeda et al., Zygote 17, 209-215, 2009). The deacetylation is catalysed by histone deacetylases (HDAC) which remove acetyl groups and causes chromatin compaction and DNA segment silencing at this location (Johnstone, Nature Reviews Drug Discovery 1, 287-299, 2002). The trichostatin A (TSA) is an HDAC inhibitor that increases the amount of acetylated histones and the demethylation of DNA (Lee et al., Journal of Reproduction and Development 57, 34-42, 2011). In this sense, the drug has been used in an attempt to increase the production efficiency of embryos by nuclear transfer (NT). The objective of this study was to test the effect of TSA in exposure times of 20 and 25 hours in the culture of bovine embryos cloned by NT with mesenchymal stem cells (MSCs) derived from adipose tissue. A biopsy of skin and adipose tissue was collected from the perineal region of a female bovine Gir, at two months of age. The cells were isolated by the explant and cultured in Dulbeccos Modified Eagle Medium added with 10% fetal bovine serum. Cumulus-oocyte complexes recovered from slaughterhouse ovaries were matured for 18 h at 38.5°C and 5% CO2. The NT was then performed with the adipose tissue and the MSCs reconstructed embryos were subjected to culture with 50 nM TSA for 20 and 25 h, for 4 h in activation medium containing 6-DMAP and further for 16 or 21 h in medium cultivation. Subsequently, the embryos continued in culture in synthetic oviductal fluid (SOF) medium without TSA and the parthenogenetic control was performed in every manipulation. Five NT procedures were performed for each treatment (20 h, 25 h and without TSA). Fusion rates, cleavage and blastocyst production were compared by Tukey test (p <0.05). The cleavage rate of parthenogenetic embryos (93.45 ± 7.97) was higher than the cleavage rate of embryos without treatment (82.45 ± 5.59) but was statistically similar to embryos treated with 20 and 25 h (87.25 ± 8.41 and 85.54 ± 3.88, respectively). Still, there was no difference in cleavage rate between treated and untreated embryos. The blastocyst production rate on the seventh day of culture was superior to the parthenogenetic control (59.24 ± 11.75) compared to treatments for 20 h (36.22 ± 16.80), 25 h (33.66 ± 12.84) and without the use of TSA (32.70 ± 9.11), which did not differ. It can be concluded that the use of TSA had no significant effect in improving the rates of cleavage and development of bovine embryos by nuclear transfer with MSCs from adipose tissue. However, additional studies to evaluate the quality and embryos of the methylation pattern should be conducted to better understand the effects of TSA in embryos cloned with this cell type.
650 $ahistone deacetylase
650 $aClonagem
653 $aCloning
653 $aEpigenetic
700 1 $aCUMPA, H. C. B.
700 1 $aFONSECA NETO, A. M. da
700 1 $aMARTINS, C. F.
700 1 $aBÁO, S. N.
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Embrapa Cerrados (CPAC) |
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