Neural Regeneration Research ›› 2013, Vol. 8 ›› Issue (4): 293-300.doi: 10.3969/j.issn.1673-5374.2013.04.001

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Differentiation of neuron-like cells from mouse parthenogenetic embryonic stem cells

Xingrong Yan1, Yanhong Yang2, Wei Liu1, Wenxin Geng1, Huichong Du1, Jihong Cui1, Xin Xie1, Jinlian Hua3, Shumin Yu4, Liwen Li1, Fulin Chen1   

  1. 1 College of Life Sciences, Northwest University, Xi’an 710069, Shaanxi Province, China
    2 Department of Obstetrics & Gynecology, Tangdu Hospital, the Fourth Military Medical University of Chinese PLA, Xi’an 710038, Shaanxi Province, China
    3 College of Veterinary Medicine, Northwest A&F University, Yangling 712100, Shaanxi Province, China
    4 College of Veterinary Medicine, Sichuan Agricultural University, Yaan 625001, Sichuan Province, China
  • Received:2012-10-13 Revised:2012-12-10 Online:2013-02-05 Published:2013-02-05
  • Contact: Xin Xie, Ph.D., Lecturer, College of Life Sciences, Northwest University, Xi’an 710069, Shaanxi Province, China, xiexhd@126.com. Fulin Chen, Ph.D., Professor, College of Life Sciences, Northwest University, Xi’an 710069, Shaanxi Province, China, tengda111111@ 163.com
  • About author:Xingrong Yan☆, Ph.D., Master’s supervisor. Xingrong Yan and Yanhong Yang contribute equally to this work
  • Supported by:

    This work was supported by the National Natural Science Foundation of China, No. 30900155 and 81070496; the Research Foundation of Education Bureau of Shaanxi Province, China, No. 09JK785; Foundation of Interdisciplinary for Postgraduates from Northwest University, No. 08YJC22 and the Key Laboratory Funding of Northwestern University, Shaanxi Province in China

Abstract:

Parthenogenetic embryonic stem cells have pluripotent differentiation potentials, akin to fertilized embryo-derived embryonic stem cells. The aim of this study was to compare the neuronal differentiation potential of parthenogenetic and fertilized embryo-derived embryonic stem cells. Before differentiation, karyotype analysis was performed, with normal karyotypes detected in both parthenogenetic and fertilized embryo-derived embryonic stem cells. Sex chromosomes were identified as XX. Immunocytochemistry and quantitative real-time PCR detected high expression of the pluripotent gene, Oct4, at both the mRNA and protein levels, indicating pluripotent differentiation potential of the two embryonic stem cell subtypes. Embryonic stem cells were induced with retinoic acid to form embryoid bodies, and then dispersed into single cells. Single cells were differentiated in N2 differentiation medium for 9 days. Immunocytochemistry showed parthenogenetic and fertilized embryo-derived embryonic stem cells both express the neuronal cell markers nestin, βIII-tubulin and myelin basic protein. Quantitative real-time PCR found expression of neurogenesis related genes (Sox-1, Nestin, GABA, Pax6, Zic5 and Pitx1) in both types of embryonic stem cells, and Oct4 expression was significantly decreased. Nestin and Pax6 expression in parthenogenetic embryonic stem cells was significantly higher than that in fertilized embryo-derived embryonic stem cells. Thus, our experimental findings indicate that parthenogenetic embryonic stem cells have stronger neuronal differentiation potential than fertilized embryo-derived embryonic stem cells.

Key words: neural regeneration, stem cells, parthenogenesis, parthenogenetic embryonic stem cells, embryonic stem cells, neuronal cells, karyotypes, Oct4, differentiation, embryoid body, mice, grants-supported paper, photographs-containing paper, neuroregeneration