Abstract
An interplay between gene expression, mineral concentration, and beef quality traits in Bos indicus muscle has been reported previously under a network approach. However, growing evidence suggested that miRNAs not only modulate gene expression but are also involved with mineral homeostasis. To our knowledge, understanding of the miRNA–gene expression-mineral concentration relationship in mammals is still minimal. Therefore, we carried out a miRNA co-expression and multi-level miRNA–mRNA integration analyses to predict the putative drivers (miRNAs and genes) associated with muscle mineral concentration in Nelore steers. In this study, we identified calcium and iron to be the pivotal minerals associated with miRNAs and gene targets. Furthermore, we identified the miR-29 family (miR-29a, -29b, -29c, -29d-3p, and -29e) as the putative key regulators modulating mineral homeostasis. The miR-29 family targets genes involved with AMPK, insulin, mTOR, and thyroid hormone signaling pathways. Finally, we reported an interplay between miRNAs and minerals acting cooperatively to modulate co-expressed genes and signaling pathways both involved with mineral and energy homeostasis in Nelore muscle. Although we provided some evidence to understand this complex relationship, future work should determine the functional implications of minerals for miRNA levels and their feedback regulation system.\\An interplay between gene expression, mineral concentration, and beef quality traits in Bos indicus muscle has been reported previously under a network approach. However, growing evidence suggested that miRNAs not only modulate gene expression but are also involved with mineral homeostasis. To our knowledge, understanding of the miRNA–gene expression-mineral concentration relationship in mammals is still minimal. Therefore, we carried out a miRNA co-expression and multi-level miRNA–mRNA integration analyses to predict the putative drivers (miRNAs and genes) associated with muscle mineral concentration in Nelore steers. In this study, we identified calcium and iron to be the pivotal minerals associated with miRNAs and gene targets. Furthermore, we identified the miR-29 family (miR-29a, -29b, -29c, -29d-3p, and -29e) as the putative key regulators modulating mineral homeostasis. The miR-29 family targets genes involved with AMPK, insulin, mTOR, and thyroid hormone signaling pathways. Finally, we reported an interplay between miRNAs and minerals acting cooperatively to modulate co-expressed genes and signaling pathways both involved with mineral and energy homeostasis in Nelore muscle. Although we provided some evidence to understand this complex relationship, future work should determine the functional implications of minerals for miRNA levels and their feedback regulation system.
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Availability of data and material
All relevant data are within the paper and its Supporting Information files. All sequencing data is available in the European Nucleotide Archive (ENA) repository (EMBL-EBI), under accession PRJEB13188, PRJEB10898, and PRJEB19421 (https://www.ebi.ac.uk/ena/submit/sra/). All additional datasets generated and analyzed during this study are available from the corresponding author on reasonable request.
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Acknowledgements
We are thankful to the EMBRAPA Multiuser Bioinformatics Laboratory (Laboratório Multiusuário de Bioinformática da Embrapa—LMB) for providing high-performance computational infrastructure; Dr. Bruno G. N. Andrade for the server management and support in the EMBRAPA Pecuária Sudeste; and the Technical University of Denmark (DTU) for accepting the first author as a visiting scholar.
Funding
This study was conducted with funding from EMBRAPA (Macroprograma 1, 01/2005), São Paulo Research Foundation (FAPESP) (Grant #2012/23638-8) and by the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior—Brasil (CAPES)—Finance Code 001. ARAN, LCAR, and LLC were granted CNPq fellowships. JA was granted CAPES fellowship. WJSD was granted FAPESP (Grant #2015/09158-1 and #2017/20761-7) scholarship.
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WJSD, LCAR, LLC, and HNK conceived the idea of this research. ARAN and CFG carried out the mineral measurement; WJSD, PB, and GM carried out the bioinformatics and data analysis. ASMC carried out miRNA data analysis (quality control, mapping, and counting). WJSD, PB, GM, ASMC, HNK, JA, and LCAR collaborated with the interpretation of results, discussion and review of the manuscript. WJSD and PB drafted the manuscript. All authors have reviewed, discussed, and approved the final version of the manuscript.
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Supplementary Fig. S1
Module-trait association analysis. Modules are labeled by color on the y-axis and traits on the x-axis. For significantly associated modules, the coefficient from the linear model is given within the cell. Only associations with p < 0.05 are shown (PDF 6 kb)
Supplementary Fig. S2
Regulatory network of negative miRNA-mRNA pairs in Nelore muscle. The edges are colored according to miRNA module (miR.MEbrown, miR.MEcyan, miR.MEgreen, miR.MElightyellow, miR.MEmagenta, miR.MEmidnightblue, miR.MEred, and miR.MEtan) Transcription factors are represented by lightpurple diamond shape (TIFF 10471 kb)
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da Silva Diniz, W.J., Banerjee, P., Mazzoni, G. et al. Interplay among miR-29 family, mineral metabolism, and gene regulation in Bos indicus muscle. Mol Genet Genomics 295, 1113–1127 (2020). https://doi.org/10.1007/s00438-020-01683-9
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DOI: https://doi.org/10.1007/s00438-020-01683-9