Application of 2-D DIGE to study the effect of ageing on horse meat myofibrillar sub-proteome

Autor: Rivera Beldarrain, Lorea, Sentandreu, Enrique, Aldai Elkoro-Iribe, Noelia, Sentandreu Vicente, Miguel Ángel, Miller, Ingrid
Přispěvatelé: Eusko Jaurlaritza, Agencia Estatal de Investigación (España)
Rok vydání: 2023
Předmět:
Zdroj: Journal of Proteomics. 272:104770
ISSN: 1874-3919
DOI: 10.1016/j.jprot.2022.104770
Popis: Considering the high relevance of meat tenderness for consumer acceptability, the aim of this study was to investigate post-mortem changes in myofibrillar sub-proteome in steaks from longissimus thoracis et lumborum muscle of six Hispano-Bretón horses. Indeed, the ageing process that leads to meat tenderization has been scarcely studied in this species. Steaks (n = 24) were aged (4 °C) in the dark under vacuum for 0, 7, 14 and 21 days and the myofibrillar sub-proteome was extracted. Using 2-D DIGE minimal labelling, 35 spots that were differentially abundant between 0 and 21 days aged meat were detected. Of them, 24 were analysed by LC-MS/MS, identifying a total of 29 equine proteins. These were structural and metabolic proteins, and among them, four (Actin, Troponin T and Myosin binding proteins 1 and 2) were selected for Western blot analysis, reporting changes in their abundance after 0, 7, 14 and 21 days of ageing. Results revealed that they should be further studied as potential protein biomarkers of horse meat tenderization. Additionally, several protein fragments increased after ageing, as was the case of glyceraldehyde-3-phosphate dehydrogenase. Fragments of this protein were present in four protein spots, and their study could be useful for monitoring horse meat tenderization. SIGNIFICANCE: Tenderization during ageing has been widely studied in meat from several farm animal species; however, both research and standardized ageing practices are lacking for the particular case of horse meat. In this regard, this study presents novel proteomic findings related to post-mortem evolution of horse muscle proteins. Acquired knowledge would support the development and optimization of efficient ageing practices by horse meat industry.
Department of Economic Development and Infrastructures of the Basque Government is acknowledged for the doctoral fellowship of L.R. Beldarrain. This work was funded by Lactiker Research Group (Basque Government IT944-16), project RTI2018-096162-R-C22 (Spanish Agencia Estatal de Investigación) and the Institute of Medical Biochemistry (University of Veterinary Medicine Vienna).
Databáze: OpenAIRE
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