Document Detail


Effect of leukemia inhibitory factor on long-term propagation of precursor cells derived from rat forebrain subventricular zone and ventral mesencephalon.
MedLine Citation:
PMID:  18377897     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Tissue blocks containing neural precursor cells were isolated from the rat forebrain subventricular zone (SVZ) and ventral mesencephalon (VM) and propagated as neural tissue-spheres (NTS). In the presence of fibroblast growth factor-2 (FGF2) and epidermal growth factor (EGF), SVZ-derived NTS were propagated and maintained for more than 6 months with a cell population doubling time of 21.5 days. The replacement of EGF by leukemia inhibitory factor (LIF) resulted in a cell population doubling time of 19.8 days, corresponding to a 10-fold increase in estimated cell numbers over a period of 70 days, at which point these NTS ceased to grow. In the presence of FGF2 and LIF, VM-derived NTS displayed a cell population doubling time of 24.6 days, which was maintained over a period of more than 200 days. However, when LIF was replaced by EGF, the cell numbers only increased 1.2 fold over 50 days. Using different immunohistochemical markers, we observed a distinct compartmentalization of cells within the spheres. In SVZ-derived NTS an outer compartment of proliferating (nestin(+)/Ki67(+)), preferentially neurogenic (beta-tubulin III(+)/MAP2(+)) cells, surrounded by an inner compartment of glial (GFAP(+)/CNPase(+)) cells. The inner compartment of long-term propagated VM-derived NTS contained GFAP(+) cells as well as cells immunoreactive for the precursor cell marker nestin, even where minimal cell proliferation was observed. Our results demonstrate that tissues from rat SVZ and VM can be propagated as NTS. However, the cellular organization of the NTS and the need for mitogens to maintain long-term proliferative capacity differ with the origin of the tissue.
Authors:
Rikke K Andersen; Jens Zimmer; Lars U Wahlberg; Morten Meyer
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2008-02-29
Journal Detail:
Title:  Experimental neurology     Volume:  211     ISSN:  0014-4886     ISO Abbreviation:  Exp. Neurol.     Publication Date:  2008 May 
Date Detail:
Created Date:  2008-05-05     Completed Date:  2008-07-30     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370712     Medline TA:  Exp Neurol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  301-10     Citation Subset:  IM    
Affiliation:
Department of Anatomy and Neurobiology, Institute of Medical Biology, University of Southern Denmark, 5000 Odense C, Denmark.
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MeSH Terms
Descriptor/Qualifier:
Animals
Animals, Newborn
Bromodeoxyuridine / metabolism
Cell Differentiation / drug effects
Cell Proliferation / drug effects*
Cells, Cultured
Embryo, Mammalian
Gene Expression Regulation, Developmental / physiology
Indoles
Ki-67 Antigen / metabolism
Lateral Ventricles / cytology*
Leukemia Inhibitory Factor / pharmacology*
Mesencephalon / cytology*
Nerve Tissue Proteins / metabolism
Neurons / drug effects
Prosencephalon / anatomy & histology*
Rats
Rats, Sprague-Dawley
Stem Cells / drug effects*
Time Factors
Chemical
Reg. No./Substance:
0/Indoles; 0/Ki-67 Antigen; 0/Leukemia Inhibitory Factor; 0/Nerve Tissue Proteins; 47165-04-8/DAPI; 59-14-3/Bromodeoxyuridine

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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