Abstract:
:Phenotypic guidance of embryonic stem (ES) cell fate is paramount if these cells are to be used for tissue repair and regeneration. Our objective was to compare two different cell culture feeders and their effect on proliferation, apoptosis, and differentiation of human (h) ES cells. HSF-6 hES cells were grown in Knockout Dulbecco's modified Eagle medium (DMEM) on mouse embryonic fibro-blasts (MEFs) or U87 glioblastoma cells at densities of 50,000, 100,000, and 150,000 cells/well of a six-well plate for 7, 12, and 19 days. Immunocytochemistry was performed for bromodeoxyuridine (BrdU), TUNEL, and neural differentiation markers including class III beta-tubulin, NeuN, nestin, and doublecortin. Slides were examined by laser confocal microscopy with semiquantitative analyses of marker expression. BrdUand TUNEL-positive cells were primarily, but not exclusively, at edges and between established colonies. BrdU expression was higher on U87 feeders at low and intermediate densities at day 19. Both feeders demonstrated higher BrdU expression at day 7 compared to days 12 and 19. U87 produced more TUNEL-positive cells than MEFs with increasing numbers with increasing density and time in culture. Nuclear Oct-4 staining was seen only at day 7. MEFs appeared to promote greater neural differentiation of hES cells than U87. We conclude hES cells grown on U87 feeders demonstrate greater numbers of apoptotic cells and BrdU-positive cells at day 19. Independent of the feeders, proliferation and apoptosis may be positively correlated. We speculate differences in proliferation, apoptosis, and neural differentiation may be due to differential elaboration of specific cytokines by MEFs and U87.
journal_name
Stem Cells Devjournal_title
Stem cells and developmentauthors
Ozolek JA,Jane EP,Krowsoski L,Sammak PJdoi
10.1089/scd.2006.0109subject
Has Abstractpub_date
2007-06-01 00:00:00pages
403-12issue
3eissn
1547-3287issn
1557-8534journal_volume
16pub_type
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journal_title:Stem cells and development
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journal_title:Stem cells and development
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journal_title:Stem cells and development
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journal_title:Stem cells and development
pub_type: 杂志文章
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journal_title:Stem cells and development
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journal_title:Stem cells and development
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journal_title:Stem cells and development
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journal_title:Stem cells and development
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journal_title:Stem cells and development
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journal_title:Stem cells and development
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journal_title:Stem cells and development
pub_type: 杂志文章
doi:10.1089/scd.2015.0260
更新日期:2016-01-15 00:00:00
abstract::Human stem cells from various sources have potential therapeutic applications. The clinical implementation of these therapies introduces the need for methods of noninvasive tracking of cells. The purpose of this study was to evaluate a high resolution magnetic resonance imaging (MRI) technique for in vivo detection an...
journal_title:Stem cells and development
pub_type: 杂志文章
doi:10.1089/scd.2008.0028
更新日期:2008-12-01 00:00:00
abstract::Dental follicle stem cells (DFSCs), which are the stem cells present in the dental follicle tissue of the tooth germ and are derived from the neural crest, are direct precursor cells of periodontal tissues and can form the periodontal ligament, cementum, and alveolar bone proper in the late stage of tooth development....
journal_title:Stem cells and development
pub_type: 杂志文章,评审
doi:10.1089/scd.2019.0012
更新日期:2019-08-01 00:00:00
abstract::Mesenchymal stem cells (MSCs) have a superior immunomodulatory capacity compared to other cells of the immune system, and they hold great promise for treating various immune disorders. However, their regulatory effects on the maturation of immature dendritic cells (imDCs) are not fully understood. In this study, we sh...
journal_title:Stem cells and development
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abstract::Human embryonic stem cells (hESCs) exhibiting skewed X chromosome inactivation (XCI) have been reported. The copy number variations (CNVs), loss of heterozygosity (LOH), or single-nucleotide variant (SNV) events in those epigenetically distinct cells remain unknown, and whether such genetic abnormalities will influenc...
journal_title:Stem cells and development
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更新日期:2015-08-01 00:00:00
abstract::The capability to form all cell types of the body is a unique feature of stem cells. However, many questions remain concerning the mechanisms regulating differentiation potential. The derivation of spermatogonial cell lines (SGs) from mouse and human, which can differentiate across germ-layer borders, suggested male g...
journal_title:Stem cells and development
pub_type: 杂志文章
doi:10.1089/scd.2010.0290
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