Abstract:
:Embryonic stem-like (ES-like) cells have now been derived from the inner cell mass (ICM) of horse embryos at the blastocyst stage. Because they have been shown to express cell-surface antigens found in both human and mouse ES cells, the present study investigated gene expression patterns in day-7 horse blastocysts from which the horse ES-like cells had been derived originally. The genes studied included Oct-4, stage-specific embryonic antigen-1 (SSEA-1), SSEA-3, SSEA-4, tumor rejection antigen-1-60 (TRA-1-60), TRA-1-81, and alkaline phosphatase activity, and whereas all three of the SSEA antigens were expressed in both the ICM and the trophoblast on day 7, Oct-4, TRA-1-60, TRA-1-81, and alkaline phosphatase activity were localized mostly in the ICM. Upon in vitro differentiation of the horse ES-like cells, their expression of the stem cell markers was abolished. Therefore, the species-specific expression pattern of stem cell markers in horse ES-like cells reflects gene expression in the blastocysts from which they are derived.
journal_name
Stem Cells Devjournal_title
Stem cells and developmentauthors
Guest DJ,Allen WRdoi
10.1089/scd.2007.0032subject
Has Abstractpub_date
2007-10-01 00:00:00pages
789-96issue
5eissn
1547-3287issn
1557-8534journal_volume
16pub_type
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