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miRNA can regulate development and milk yield of the mammary gland through epigenetic mechanism. miRNA can directly and indirectly modulate the activity of the epigenetic machinery, target genes through post-inhibition of translation initiation, mediate miRNA decay, target genes and inhibit the positive regulation, regulate tone modification, and regulate DNA methylation of target genes. Here we reviewed...
A galactopoietic compound, identified as dibutyl phthalate (DBP), was isolated from Vaccaria segetalis. The activity of DBP on lactation ability of dairy cow mammary gland epithelial cells (DCMECs) cultured in vitro and dairy cow was evaluated. Results showed that DBP could promote cell viability, proliferation ability, lactose and β-casein secretion of DCMECs, which could also raise the milk yields...
Prolactin (PRL) is a versatile signaling molecule and regulates a variety of physiological processes, including mammary gland growth and differentiation and the synthesis of milk proteins. While PRL is known to be necessary for high levels of milk protein expression, the mechanism by which the synthesis of milk proteins is stimulated at the transcript level is less known. A major modification in the...
Let-7g, a member of the let-7 family, regulates gene expression at the post-transcriptional level. The study explored a series of biological effects of mouse mammary epithelial cells that let-7g was produced. The differential expression of let-7g was detected by qRT-PCR in different developmental stages of the mouse mammary gland. let-7g expression and impact of let-7g on mouse mammary epithelial...
Three lactoproteins (α-S1-casein, β-lactoglobulin, and β-casein) promotors were cloned, sequenced and compared relative luciferase expression. The results showed that the promotor activity of bovine α-S1-casein gene was the best, and would be used to produce pharmaceutically and medically important proteins in the mammary gland of transgenic animals and also for the construction of an inducible eukaryotic...
To analyze miR-139 target sites in 3′ UTR of GHR gene in dairy cow mammary gland, a GHR 3′ UTR- luciferase reporter vector was constructed and the effect of miRNA on its activity was evaluated in dairy cow mammary gland epithelial cells (DCMECs). The miR-139 targeting GHR 3′ UTR was predicted by Target Scan 5.1 software, 3′ UTR fragment of GHR was amplified by PCR from RNA of DCMECs. PCR products...
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