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      Evaluación de métodos de extracción proteica en alevines de chame (Dormitator latifrons) para estudio proteómico Translated title: Evaluation of protein extraction methods in fingerlings of chame (Dormitator latifrons) for proteomic study

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          Abstract

          Resumen El chame (Dormitator latifrons), es un pez de agua dulce, con potencial acuícola en Latinoamérica. Su producción, está limitada a la utilización de juveniles capturados del medio silvestre. Se ha logrado reproducir esta especie en cautiverio a partir de reproductores obtenidos del medio natural, aunque en la mayoría de los casos, el proceso fracasa en el paso de prolarvas a larvas por falta de alimento que contenga los requerimientos nutricionales necesarios, especialmente proteínas como unos de los principales compuestos que necesitan los peces. El objetivo de la investigación fue evaluar dos protocolos de extracción de proteínas, a partir de alevines de Dormitator latifrons. Se tomaron muestras de alevines del medio natural, se sacrificaron por inmersión en N2 líquido y conservados a -80°C hasta la extracción de proteínas. Este trabajo compara la concentración de proteína y el perfil proteico, obtenidos mediante el uso de dos tampones de extracción: uno tradicional RIPA; y bicarbonato amónico, una sal volátil compatible con espectrometría de masas. Como resultado se muestra un mejor perfil proteico en las muestras tratadas con bicarbonato amónico, por lo que se concluye y recomienda este protocolo para futuras investigaciones del proteoma global, mediante espectrometría de masas.

          Translated abstract

          Abstract The chame (Dormitator latifrons) is a freshwater fish with aquaculture potential in Latin America. Its production is limited to the use of juveniles captured from the wild. It has been possible to reproduce this species in captivity from broodstock obtained from the natural environment, although in most cases, the process fails in the passage from prolarvae to larvae due to lack of food that contains the necessary nutritional requirements, especially proteins such as some of the main compounds needed by fish. The objective of the research was to evaluate two protein extraction protocols from Dormitator latifrons fingerlings. Fingerling samples were taken from the natural environment, sacrificed by immersion in liquid N2 and stored at -80°C until protein extraction. This work compares the protein concentration and the protein profile, obtained by using two extraction buffers: a traditional RIPA; and ammonium bicarbonate, a volatile salt compatible with mass spectrometry. As a result, a better protein profile is shown in the samples treated with ammonium bicarbonate, which is why this protocol is concluded and recommended for future investigations of the global proteome, by means of mass spectrometry.

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          Cleavage of Structural Proteins during the Assembly of the Head of Bacteriophage T4

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            A Rapid and Sensitive Method for the Quantitation of Microgram Quantities of Protein Utilizing the Principle of Protein-Dye Binding

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              Fish proteome analysis: model organisms and non-sequenced species.

              In the last decade, proteomic technologies have been increasingly used in fish biology research. Proteomics has been applied primarily to investigate the physiology, development biology and the impact of contaminants in fish model organisms, such as zebrafish (Danio rerio), as well as in some commercial species produced in aquaculture, mainly salmonids and cyprinids. However, the lack of previous genetic information on most fish species has been a major drawback for a more general application of the different proteomic technologies currently available. Also, many teleosts of interest in biological research and with potential application in aquaculture hold unique physiological characteristics that cannot be directly addressed from the study of small laboratory fish models. This review describes proteomic approaches that have been used to investigate diverse biological questions in model and non-model fish species. We will also evaluate the current possibilities to integrate fish proteomics with other "omic" approaches, as well as with additional complementary techniques, in order to address the future challenges in fish biology research.
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                Author and article information

                Journal
                rsan
                Revista San Gregorio
                Revista San Gregorio
                Universidad San Gregorio de Portoviejo (Portoviejo, Manabí, Ecuador )
                1390-7247
                2528-7907
                November 2023
                : 1
                : 55
                : 92-106
                Affiliations
                [2] Andalucía orgnameUniversidad de Córdoba Spain b52esloe@ 123456uco.es
                [3] Andalucía orgnameUniversidad de Córdoba Spain v52gobag@ 123456uco.es
                [1] Manabí orgnameUniversidad Técnica de Manabí Ecuador azambrano8552@ 123456utm.edu.ec
                [4] Manabí orgnameUniversidad Técnica de Manabí Ecuador juan.vera@ 123456utm.edu.ec
                Article
                S2528-79072023000300092 S2528-7907(23)00105500092
                10.36097/rsan.v1i55.2525
                6bda0e72-be3a-467a-9797-4eca7ba2776e

                This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

                History
                : 17 August 2023
                : 24 May 2023
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 18, Pages: 15
                Product

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                protein profile,proteomics.,Dormitator latifrons,alevines,cuantificación,perfil proteico,proteómica,quantification,fingerlings

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