Stimulation of chick neuroblast proliferation in culture by brain extracts.

Details

Serval ID
serval:BIB_852FD558A3B9
Type
Article: article from journal or magazin.
Collection
Publications
Title
Stimulation of chick neuroblast proliferation in culture by brain extracts.
Journal
Journal of neuroscience research
Author(s)
Barakat I., Sensenbrenner M., Labourdette G.
ISSN
0360-4012
Publication state
Published
Issued date
1982
Peer-reviewed
Oui
Volume
8
Number
2-3
Pages
303-314
Language
english
Abstract
Chick neuroblasts from 6-day-old embryos were grown on a collagen substrate in minimum Eagle's medium supplemented with 5% horse serum. We found that [3H]thymidine incorporation in these cultures decreased drastically from day 2 to day 3 after seeding. Addition of brain extract from 8-day-old chick embryos (CBe8) to the nutrient medium after 24 hours of culture elicited a very important stimulation of [3H]thymidine incorporation. Extracts of brains from adult animals were much less effective. It was shown that the increase of tritiated-thymidine incorporation reflected proliferation of neuroblasts in the culture, at least between day 2 and 4. The activity of the brain extracts was destroyed by trypsin treatment, which suggests that the factor responsible for the stimulation of the proliferation is a polypeptide. The CBe8 and the brain extract of adult chicken (CBa) were fractionated by gel filtration. An active fraction was eluted at a volume indicating an apparent molecular weight of roughly 70,000. At that stage of the study results suggest that a polypeptide (tentatively called neuroblast proliferation factor, NPF) present in the embryonic chick brain extract, is a proliferation factor for chick neuroblasts in primary culture.
Keywords
Animals, Brain, Brain Chemistry, Cell Differentiation, Cells, Cultured, Chick Embryo, Chickens, Nerve Growth Factors, Peptides, Thymidine, Tissue Extracts
Pubmed
Web of science
Create date
30/03/2009 9:34
Last modification date
20/08/2019 14:44
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