Stimulation of chick neuroblast proliferation in culture by brain extracts.

Détails

ID Serval
serval:BIB_852FD558A3B9
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Stimulation of chick neuroblast proliferation in culture by brain extracts.
Périodique
Journal of neuroscience research
Auteur(s)
Barakat I., Sensenbrenner M., Labourdette G.
ISSN
0360-4012
Statut éditorial
Publié
Date de publication
1982
Peer-reviewed
Oui
Volume
8
Numéro
2-3
Pages
303-314
Langue
anglais
Résumé
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.
Mots-clé
Animals, Brain, Brain Chemistry, Cell Differentiation, Cells, Cultured, Chick Embryo, Chickens, Nerve Growth Factors, Peptides, Thymidine, Tissue Extracts
Pubmed
Web of science
Création de la notice
30/03/2009 10:34
Dernière modification de la notice
03/03/2018 18:56
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