Document Detail


The Amniotic Fluid as a Source of Neural Stem Cells in the Setting of Experimental Neural Tube Defects.
MedLine Citation:
PMID:  22957979     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
We sought to determine whether neural stem cells (NSCs) can be isolated from the amniotic fluid in the setting of neural tube defects (NTDs), as a prerequisite for eventual autologous perinatal therapies. Pregnant Sprague-Dawley dams (n=62) were divided into experimental (n=42) and control (n=20) groups, depending on prenatal exposure to retinoic acid for the induction of fetal NTDs. Animals were killed before term for analysis (n=685 fetuses). Amniotic fluid samples from both groups underwent epigenetic selection for NSCs, followed by exposure to neural differentiation media. Representative cell samples underwent multiple morphological and phenotypical analyses at different time points. No control fetus (n=267) had any structural abnormality, whereas at least one type of NTD developed in 52% (217/418) of the experimental fetuses (namely isolated spina bifida, n=144; isolated exencephaly, n=24; or a combination of the two, n=49). Only amniotic samples from fetuses with a NTD yielded cells with typical neural progenitor morphology and robust expression of both Nestin and Sox-2, primary markers of NSCs. These cells responded to differentiation media by displaying typical morphological changes, along with expression of Beta-Tubulin III, Glial Fibrillary Acidic Protein (GFAP), and/or O4, markers for immature neurons, astrocytes, and oligodendrocytes, respectively. This was concurrent with downregulation of Nestin and Sox-2. We conclude that the amniotic fluid can harbor disease-specific stem cells, e.g. neural stem cells in the setting of experimental neural tube defects. The amniotic fluid may be a practical source of autologous neural stem cells applicable to novel forms of therapies for spina bifida.
Authors:
Christopher G Turner; Justin D Klein; Junmei Wang; Devang Thakor; Darcy Benedict; Azra Ahmed; Yang Teng; Dario O Fauza
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-9-7
Journal Detail:
Title:  Stem cells and development     Volume:  -     ISSN:  1557-8534     ISO Abbreviation:  Stem Cells Dev.     Publication Date:  2012 Sep 
Date Detail:
Created Date:  2012-9-10     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101197107     Medline TA:  Stem Cells Dev     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Affiliation:
Children's Hospital Boston and Harvard Medical School, Surgery, Boston, Massachusetts, United States; cgbturner@gmail.com.
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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