Effects of Different Concentrations of Linoleic Acid on Expression of Milk Protein Synthesis Related Gene in Two-Dimension and Three-Dimension Cultured Bovine Mammary Epithelial Cells

  • XING Yuanyuan ,
  • LI Dabiao ,
  • LI Zinan ,
  • JIN Yaya
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  • College of Animal Science, Inner Mongolia Agricultural University, Hohhot 010018, China

Received date: 2019-04-06

  Online published: 2019-10-17

Abstract

This study aims to evaluate the effects different concentrations of linoleic acid (LA) on expression of milk protein synthesis related gene in two-dimension (2D) and three-dimension (3D) cultured bovine mammary epithelial cells (BMECs). A single factorial experimental design was used in the experiment, the P3 generation BMECs were seeded in 6-well plates with Matrigel spread, and cultured for 3 d, next, different concentrations (0, 40 and 80 μmol/L) of LA were supplemented in the culture medium for 48 h. The same concentration of LA was supplemented in BMECs in 2D and 3D cultured models, to compare the cell morphology in BMECs in 2D and 3D cultured models, and the expression of milk protein synthesis related genes were determined by real-time fluorescence quantitative method. The results showed as follow:1) BMECs showed cobblestone morphology in 2D culture model and alveoli-like structures in 3D culture model. 2) The expression of milk protein synthesis related genes in BMECs in 2D culture model was significantly higher than that in 3D culture model (P<0.05). 3) The expression of α-casein (CSN1S1), signal transduction activator 5 (STAT5A), eukaryotic translation initiation factor 4E binding protein 1 (EIF4EBP1) and ribosomal p70s6 kinase (RPS6K1) in 2D and 3D culture models were the same, however, the expression of κ-casein (CSN3), mammalian target of rapamycin (mTOR) and serine/threonine kinase (AKT1) in 2D and 3D culture models were showed an opposite trend. To sum up, 3D culture model is a more appropriate model for the study related to CSN3, mTOR and AKT1 genes expression.

Cite this article

XING Yuanyuan , LI Dabiao , LI Zinan , JIN Yaya . Effects of Different Concentrations of Linoleic Acid on Expression of Milk Protein Synthesis Related Gene in Two-Dimension and Three-Dimension Cultured Bovine Mammary Epithelial Cells[J]. Chinese Journal of Animal Nutrition, 2019 , 31(10) : 4667 -4674 . DOI: 10.3969/j.issn.1006-267x.2019.10.031

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