Abstract
Purpose
Human embryonic stem cells (hESCs) are self-renewing, pluripotent cells that are valuable research tools and hold promise for use in regenerative medicine. The need for new hESC lines motivated our attempts to find a new resource for the derivation of hESC lines. The aim of this work was to establish more hESC lines from abnormal fertilized zygotes and to meet the emerging requirements for their use in cell replacement therapies, disease modeling, and basic research.
Methods
A total of 130 tripronuclear human zygotes was collected 18–20 h post-insemination and cultured in a modified culture medium. The inner cell mass of 12 blastocysts were isolated by a mechanical method in order to establish embryonic stem cell lines.
Results
We established four hESC lines derived from 130 trinuclear zygotes, one of which was triploid and the others were diploid. The efficiency of deriving hESC lines is 3.08 %. The ratio of deriving triploid and diploid hESC lines is 1:3. All of these hESC lines exhibited similar markers of undifferentiated hESCs and had the typical morphology of hESCs, a capacity for long-term proliferation, and pluripotent differentiation potential both in vivo and in vitro.
Conclusions
These abnormal zygotes, which otherwise would have been discarded, can serve as an alternative source for normal euploid hESC lines.
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Xinjie Chen, Yumei Luo, Yong Fan contributed equally to the work.
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Our results of this study show that these tripronuclear zygotes, which otherwise would have been discarded, can serve as an alternative source for normal euploid hESC lines.
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Chen, X., Luo, Y., Fan, Y. et al. Triploid and diploid embryonic stem cell lines derived from tripronuclear human zygotes. J Assist Reprod Genet 29, 713–721 (2012). https://doi.org/10.1007/s10815-012-9764-4
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DOI: https://doi.org/10.1007/s10815-012-9764-4