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dc.contributor.authorLi, Xiajun
dc.contributor.authorLeder, Philip
dc.date.accessioned2011-03-06T02:16:22Z
dc.date.issued2007
dc.identifier.citationLi, Xiajun, and Philip Leder. 2007. Identifying genes preferentially expressed in undifferentiated embryonic stem cells. BMC Cell Biology 8: 37.en_US
dc.identifier.issn1471-2121en_US
dc.identifier.urihttp://nrs.harvard.edu/urn-3:HUL.InstRepos:4738025
dc.description.abstractBackground: The mechanism involved in the maintenance and differentiation of embryonic stem (ES) cells is incompletely understood. Results: To address this issue, we have developed a retroviral gene trap vector that can target genes expressed in undifferentiated ES cells. This gene trap vector harbors both GFP and Neo reporter genes. G-418 drug resistance was used to select ES clones in which the vector was integrated into transcriptionally active loci. This was then followed by GFP FACS profiling to identify ES clones with reduced GFP fluorescence and, hence, reduced transcriptional activity when ES cells differentiate. Reduced expression of the GFP reporter in six of three hundred ES clones in our pilot screening was confirmed to be down-regulated by Northern blot analysis during ES cell differentiation. These six ES clones represent four different genes. Among the six integration sites, one was at Zfp-57 whose gene product is known to be enriched in undifferentiated ES cells. Three were located in an intron of a novel isoform of CSL/RBP-Jkappa which encodes the key transcription factor of the LIN-12/Notch pathway. Another was inside a gene that may encode noncoding RNA transcripts. The last integration event occurred at a locus that may harbor a novel gene. Conclusion: Taken together, we demonstrate the use of a novel retroviral gene trap vector in identifying genes preferentially expressed in undifferentiated ES cells.en_US
dc.language.isoen_USen_US
dc.publisherBioMed Centralen_US
dc.relation.isversionofdoi:10.1186/1471-2121-8-37en_US
dc.relation.hasversionhttp://www.ncbi.nlm.nih.gov/pmc/articles/PMC1995199/pdf/en_US
dash.licenseLAA
dc.titleIdentifying Genes Preferentially Expressed in Undifferentiated Embryonic Stem Cellsen_US
dc.typeJournal Articleen_US
dc.description.versionVersion of Recorden_US
dc.relation.journalBMC Cell Biologyen_US
dash.depositing.authorLeder, Philip
dc.date.available2011-03-06T02:16:22Z
dash.affiliation.otherHMS^Medicine- Beth Israel-Deaconessen_US
dash.affiliation.otherHMS^Emeritusen_US
dc.identifier.doi10.1186/1471-2121-8-37*
dash.contributor.affiliatedLeder, Philip


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