›› 2017, Vol. 44 ›› Issue (2): 411-416.doi: 10.16431/j.cnki.1671-7236.2017.02.016

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Effect of Umbilical Cord Mesenchymal Stem Cells and Bovine Mammary Gland Epithelial Cells Co-culture under the Serum-free Condition on Expression of IGF-Ⅰ

ZHAO Yan-kun, SHAO Wei, LUO Cheng-long, YU Xiong   

  1. Xinjiang Meat Emulsions with Plant-eating Animal Nutrition Laboratory, College of Animal Science, Xinjiang Agricultural University, Urumqi 830052, China
  • Received:2016-08-23 Online:2017-02-20 Published:2017-02-25

Abstract:

The study was aimed to explore the effect of umbilical cord mesenchymal stem cells(UC-MSCs) and bovine mammary gland epithelial cells (BMECs) under the serum-free co-culturing condition on expression of IGF-Ⅰ. UC-MSCs and BMECs were co-cultured directly at the concentration ratios of 1:2,in control groups, UC-MSCs and BMECs were cultured alone.Using ELISA method to detect the IGF-Ⅰlevels in each group supernatant at 48 h, and two kinds of cells were separated by Transwell Chambers, the IGF-Ⅰ and IGF-ⅠR mRNA expression values of each group were estimated with Real-time PCR. The results showed that the IGF-Ⅰ concentration of UC-MSCs and BMECs mixed co-culture was significantly higher than the UC-MSCs group (P < 0.05),and extremely significantly higher than the BMECs group (P < 0.01); The IGF-Ⅰ mRNA expression of UC-MSCs/BMECs and BMECs/UC-MSCs groups were extremely significantly higher than the control group (P < 0.01),and the IGF-Ⅰ mRNA expression of BMECs/UC-MSCs group was significantly higher than the UC-MSCs/BMECs group (P < 0.05); The IGF-ⅠR mRNA expression of UC-MSCs/BMECs and BMECs/UC-MSCs groups were higher than the control group (P < 0.05;P < 0.01), BMECs/UC-MSCs group had significant difference compared with UC-MSCs/BMECs group (P < 0.05). Conclusively, the co-culture of UC-MSCs and BMECs was able to improve the IGF-ⅠR and IGF-Ⅰ mRNA expression under the serum-free condition in vitro,and the IGF-Ⅰ concentration level was correspondence with the IGF-ⅠR mRNA expression, IGF-Ⅰmainly existed in UC-MSCs.

Key words: umbilical cord mesenchymal stem cells (UC-MSCs); bovine mammary epithelial cells(BMECs); serum free; co-culture; IGF-Ⅰ; Real-time PCR

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