Attia, Wael A., Abd El Aziz, Osama M., Spitkovsky, Dimitry, Gaspar, John A., Droege, Peter, Suhr, Frank, Sabour, Davood, Winkler, Johannes, Meganathan, Kesavan, Jagtap, Smita, Khalil, Markus, Hescheler, Juergen, Brockmeier, Konrad, Sachinidis, Agapios and Pfannkuche, Kurt (2014). Evidence for self-maintaining pluripotent murine stem cells in embryoid bodies. Stem Cell Rev. Rep., 10 (1). S. 1 - 16. TOTOWA: HUMANA PRESS INC. ISSN 1558-6804

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Abstract

Pluripotent stem cells have great potential for regenerative medicine; however, their clinical use is associated with a risk of tumor formation. We utilized pluripotent cells expressing green fluorescent protein and puromycin resistance under control of the Oct4 promoter to study the persistence of potential pluripotent cells under embryoid body (EB) culture conditions, which are commonly used to obtain organotypic cells. We found that i.) OCT4-expressing cells dramatically decrease during the first week of differentiation, ii.) the number of OCT4-expressing cells recovers from day 7 on, iii.) the OCT4-expressing cells are similar to embryonic stem cells grown in the presence of leukemia inhibitory factor LIF but express several markers associated with germ cell formation, such as DAZL and STRA-8 and iv.) the persistence of potentially pluripotent cells is independent of supportive cells in EBs. Finally, OCT4-expressing cells, isolated from EBs after 2-month of culture, were further maintained under feeder-free conditions in absence of LIF and continued to express OCT4 in 95 % of the population for at least 36 days. These findings point to an alternative state of stable OCT4 expression. In the frame of the landscape model of differentiation two attractors of pluripotency might be defined based on their different characteristics.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Attia, Wael A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Abd El Aziz, Osama M.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Spitkovsky, DimitryUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Gaspar, John A.UNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Droege, PeterUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Suhr, FrankUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sabour, DavoodUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Winkler, JohannesUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Meganathan, KesavanUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Jagtap, SmitaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Khalil, MarkusUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Hescheler, JuergenUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Brockmeier, KonradUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Sachinidis, AgapiosUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Pfannkuche, KurtUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-447146
DOI: 10.1007/s12015-013-9472-1
Journal or Publication Title: Stem Cell Rev. Rep.
Volume: 10
Number: 1
Page Range: S. 1 - 16
Date: 2014
Publisher: HUMANA PRESS INC
Place of Publication: TOTOWA
ISSN: 1558-6804
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
MOUSE EPIBLAST; IN-VITRO; NANOG; SUBPOPULATIONS; IDENTIFICATION; HETEROGENEITY; ACTIVATION; EXPRESSION; DERIVATION; STAT3Multiple languages
Cell & Tissue Engineering; Cell Biology; Medicine, Research & ExperimentalMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/44714

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