Methylation levels of lysozyme gene in rainbow trout (Oncorhynchus mykiss) fed by commercial immunogen probiotic

Ali Choubkar, Hamid Farahmand, Alireza Mirvaghefi, Houshang Alizadeh, Amirreza Abed Elmdoust


In the present study, we evaluated the effect of commercial immunogenic prebiotic on the rate of methylation of type-C gene. A total of 120 rainbow trout were divided into two treatments, including a control group and another one with 2.0% commercial prebiotic immunogen each in three replicates. On the first, 15 and 45 days, DNA of adrenal tissue was extracted and treated with bisulfite. Samples were amplified by polymerase chain reaction (PCR) and sequenced. Based on the results, there was no significant difference (P<0.05) between the 1st day (R), 15th day of control (C), 15th day of immunogen (I) and 40th day of control (CS). However, there was a significant difference (P<0.05) between the 45th day immunogenicity (IS) and other samples, i.e. the CpG islet methylation rate in the IS samples was lower leading to increase in the expression of the lysozyme gene


Lysozyme, DNA methylation, Epigenetics, Immunity.

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