ACTA VETERINARIA ET ZOOTECHNICA SINICA ›› 2015, Vol. 46 ›› Issue (7): 1141-1149.doi: 10.11843/j.issn.0366-6964.2015.07.009

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The Research of Pluripotency-related Marker Genes and Surface Markers in Bovine ICM Colonies

CUI Li-sha 1,2,ZHAO Xue-ming 2,HAO Hai-sheng 2,DU Wei-hua 2,MA You-ji1,ZHU Hua-bin 2*,WANG Zong-li1*   

  1. (1.College of Animal Science and Technology,Gansu Agricultural University,Lanzhou 730070,China;2.Institute of Animal Science,Chinese Academy of Agricutural Sciences,Beijing 100193,China)
  • Received:2015-01-05 Online:2015-07-23 Published:2015-07-23

Abstract:

This study was designed to investigate the pluripotency-related markers of bovine ES cells so as to provide a basis for optimizing culture conditions of bovine ES cells and promoting its research progress.The inner cell mass (ICM) were separated from bovine IVF blastocysts,seeded on mouse embryonic fibroblasts cultured in 2i/LIF medium and then passaged mechanically.The pluripotent markers of the ICM-derived colonies were detected at passage 1 and passage 10 by immunostaining.Additionally,the ICM and trophectoderm (TE) isolated from bovine blastocysts by magnetic activated cell sorting were used for qRT-PCR to validate the differences in gene expression between ICM and TE.We have derived ICM colonies from bovine IVF blastocysts and cultured them to passage 10,which displayed typical stem cell morphology and expressed specific markers such as OCT4,SOX2,NANOG,SSEA1,SSEA4 and TRA-1-60.Moreover,the results of qRT-PCR showed that OCT4,SOX2 and NANOG were differentially expressed between ICM and TE,SOX2 showed the most significant difference.In conclusion,2i/LIF culture medium is helpful for the culture of the ICM-derived colonies from bovine IVF blastocysts,and SOX2 is more likely to be a candidate pluripotency-related marker gene of bovine ICM-derived colonies.

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