Maria Oczkowicz1, Klaudia Pawlina-Tyszko2, Małgorzata Świątkiewicz3, Tomasz Szmatoła2,4. 1. Department of Animal Molecular Biology, National Research Institute of Animal Production, ul Krakowska 1, 32-083, Balice, Poland. maria.oczkowicz@iz.edu.pl. 2. Department of Animal Molecular Biology, National Research Institute of Animal Production, ul Krakowska 1, 32-083, Balice, Poland. 3. Department of Animal Nutrition and Feed Science, National Research Institute of Animal Production, ul Krakowska 1, 32-083, Balice, Poland. 4. Centre of Experimental and Innovative Medicine, University of Agriculture in Kraków, Al. Mickiewicza 24/28, 30-059, Kraków, Poland.
Abstract
BACKGROUND: Circulating miRNA molecules are intensively studied for their usefulness as biomarkers of civilization diseases. Meanwhile, it is known that diet can influence the level of miRNA expression in tissues. METHODS: Our research aimed to determine how a diet containing various sources of fat (rapeseed oil, beef tallow, coconut oil) and different amounts of cDDGS (corn Dried Distilled Grains with Solubles) affects the miRNA profile in pig fat-the main source of circulating miRNAs. For this purpose, we used Next Generation Sequencing of miRNA libraries. RESULTS: We observed the highest number of differentially expressed miRNAs in the samples from animals that were fed with coconut oil in the diet compared to all other treatments. In contrary, cDDGS appeared to have little effect on miRNA expression. CONCLUSIONS: We propose a subset of diet-related, adipose-specific, conservative miRNAs among mammals, namely: ssc-miR-99b, ssc-miR-4334-3p, ssc-miR-146b, ssc-miR-23a. Moreover, we observed that several miRNAs regulated by dietary fats are considered as biomarkers in human and animal diseases.
BACKGROUND: Circulating miRNA molecules are intensively studied for their usefulness as biomarkers of civilization diseases. Meanwhile, it is known that diet can influence the level of miRNA expression in tissues. METHODS: Our research aimed to determine how a diet containing various sources of fat (rapeseed oil, beef tallow, coconut oil) and different amounts of cDDGS (corn Dried Distilled Grains with Solubles) affects the miRNA profile in pig fat-the main source of circulating miRNAs. For this purpose, we used Next Generation Sequencing of miRNA libraries. RESULTS: We observed the highest number of differentially expressed miRNAs in the samples from animals that were fed with coconut oil in the diet compared to all other treatments. In contrary, cDDGS appeared to have little effect on miRNA expression. CONCLUSIONS: We propose a subset of diet-related, adipose-specific, conservative miRNAs among mammals, namely: ssc-miR-99b, ssc-miR-4334-3p, ssc-miR-146b, ssc-miR-23a. Moreover, we observed that several miRNAs regulated by dietary fats are considered as biomarkers in human and animal diseases.
Authors: Kay-Tee Khaw; Stephen J Sharp; Leila Finikarides; Islam Afzal; Marleen Lentjes; Robert Luben; Nita G Forouhi Journal: BMJ Open Date: 2018-03-06 Impact factor: 2.692