Differential morphologic effects of two fractions from fetal calf muscle on cultured chick ciliary ganglion cells

Ken Vaca, James McManaman, Sherry Bursztajn, Stanley H. Appel

Research output: Contribution to journalArticle

4 Scopus citations

Abstract

An extract of fetal calf striated muscle was found to support the survival, growth and differentiation of chick ciliary ganglion neurons in dissociated cell culture. The active material was precipitated in a single fraction by 35-60% ammonium sulfate. When this active fraction was passed over a concanavalin A-Sepharose column, only a portion of the activity was bound to the column and could be eluted by high salt. Both the bound and unbound fractions supported long-term neuronal survival and enhanced the neurons' capacity for acetylcholine synthesis. The two active fractions induced distinctly different morphologies in the cultures. The bound, salt-eluted fraction resulted in the extension of long, narrow multiply branched neurites with frequent varicosities, but it failed to support non-neuronal survival. The unbound, flow-through fraction caused the neurons to extend processes which aligned with each other and with the non-neuronal cells in dense networks. Striated muscle may thus possess the capacity to send more than one signal to modulate the development as well as maintain the survival of motor neurons.

Original languageEnglish (US)
Pages (from-to)37-46
Number of pages10
JournalDevelopmental Brain Research
Volume19
Issue number1
DOIs
StatePublished - Jan 1 1985

Keywords

  • acetylcholine synthesis
  • ciliary ganglion
  • muscle extract
  • neurite extension
  • primary cell culture
  • support cell interactions

ASJC Scopus subject areas

  • Developmental Neuroscience
  • Developmental Biology

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