The enzyme △3,△2-dienoyl-CoA isomerase （ECI1） plays a crucial role in the mitochondria113-oxidation of fatty acids with a double-bond in odd and even positions. The ECll gene might be a qualified candidate for stu...The enzyme △3,△2-dienoyl-CoA isomerase （ECI1） plays a crucial role in the mitochondria113-oxidation of fatty acids with a double-bond in odd and even positions. The ECll gene might be a qualified candidate for studies pertaining to lipid deposition and meat quality in swine. In the present study, ECI1 cDNA of the Tibetan pig was obtained by in silico cloning and verified by PCR analysis. Single-nucleotide polymorphisms （SNPs） of ECll were screened by PCR-sequencing and genotypes of those SNPs were tested by PCR-restriction fragment length polymorphism （PCR-RFLP） in Diannan small-ear pigs （DSP, n=40）, Tibetan pigs （TP, n=60） and Yorkshire pigs （YP, n=30）. The expression levels of ECll were analyzed by real-time quantitative PCR and Western blotting in tissues of the liver, backfat, and Iongissimus dorsi （LD） muscle of DSP （n=8）, TP （n=8） and YP （n=8）. Single factor linear correlation analysis was applied separately for each breed to evaluate correlations between ECll gene expression in the LD muscle and intramuscular fat （IMF） content. We obtained an ECll gene length of 1 401 bp from the cDNA that contained a full coding region of 909 bp. Three novel SNPs （g.42425337G〉A; g.42424666A〉G; and g.42422755A〉G） were detected, and only g.42424666A〉G exhibited three genotypes among the three breeds. The ECll expression levels in the LD muscle of DSP and TP were significantly higher than that of YP （P〈0.05）. Moreover, TP had the highest ECI1 expression in backfat （P〈O.01）, and a positive correlation was observed between gene expression and IMF content. The results suggest that differences in ECI1 gene expression might be related to lipid depo- sition and meat quality in pig.展开更多
基金supported by the National Major Special Project on New Varieties Cultivation for Transgenic Organisms, China (2016ZX08009-003-006)the National Key Technology Research and Development Program of China (2012BAD03B03)+1 种基金the Scientific Research Foundation for Advanced Talents, Nanyang Normal University, China (ZX2014071)the Program for Changjiang Scholar and Innovation Research Team in University, China (IRT1191)
文摘The enzyme △3,△2-dienoyl-CoA isomerase （ECI1） plays a crucial role in the mitochondria113-oxidation of fatty acids with a double-bond in odd and even positions. The ECll gene might be a qualified candidate for studies pertaining to lipid deposition and meat quality in swine. In the present study, ECI1 cDNA of the Tibetan pig was obtained by in silico cloning and verified by PCR analysis. Single-nucleotide polymorphisms （SNPs） of ECll were screened by PCR-sequencing and genotypes of those SNPs were tested by PCR-restriction fragment length polymorphism （PCR-RFLP） in Diannan small-ear pigs （DSP, n=40）, Tibetan pigs （TP, n=60） and Yorkshire pigs （YP, n=30）. The expression levels of ECll were analyzed by real-time quantitative PCR and Western blotting in tissues of the liver, backfat, and Iongissimus dorsi （LD） muscle of DSP （n=8）, TP （n=8） and YP （n=8）. Single factor linear correlation analysis was applied separately for each breed to evaluate correlations between ECll gene expression in the LD muscle and intramuscular fat （IMF） content. We obtained an ECll gene length of 1 401 bp from the cDNA that contained a full coding region of 909 bp. Three novel SNPs （g.42425337G〉A; g.42424666A〉G; and g.42422755A〉G） were detected, and only g.42424666A〉G exhibited three genotypes among the three breeds. The ECll expression levels in the LD muscle of DSP and TP were significantly higher than that of YP （P〈0.05）. Moreover, TP had the highest ECI1 expression in backfat （P〈O.01）, and a positive correlation was observed between gene expression and IMF content. The results suggest that differences in ECI1 gene expression might be related to lipid depo- sition and meat quality in pig.
