Process extension by rat CG-4 line progenitor oligodendrocytes: A positively-charged surface promotes a bipolar but not a differentiated multipolar morphology and is not necessary for cell growth.

M G Rumsby, F Afsari, M Stark, E Hughson

Research output: Contribution to journalArticlepeer-review

Abstract

Rat CG-4 line progenitor oligodendrocytes passaged in neuroblastoma-conditioned medium onto a poly-l-lysine-coated surface adopt a bipolar morphology with long processes and proliferate. On untreated or albumin- or poly-L-glutamate-coated surfaces in the same medium such cells show Little process extension but still proliferate forming clumps of cells in the medium or loosely attached to the substratum. Transfer of these cell clumps onto a poly-L-lysine-coated surface results in cell migration out of the clumps and rapid process elaboration to a bipolar morphology. In differentiation medium containing 1% foetal bovine serum CG-4 line cells extend numerous short processes equally well on poly-L-lysine-, poly-L-glutamate-, albumin-coated or untreated cell culture surfaces and divide more slowly. A positively charged substratum thus may contribute signals initiating development of a bipolar morphology: such signals are not needed for the multiprocess morphology of differentiated CG-4 cells.

Original languageEnglish
Pages (from-to)101-109
Number of pages9
JournalNeuroscience research communications
Volume23
Issue number2
Publication statusPublished - 1998

Keywords

  • CG-4 line progenitor oligodendrocytes
  • substratum charge
  • bipolar and multipolar morphology
  • cell growth
  • differentiation
  • PROTEIN-KINASE-C
  • NG2 PROTEOGLYCAN
  • CULTURED OLIGODENDROCYTES
  • MYELIN
  • EXPRESSION
  • ADHESION
  • GLYCOPROTEIN
  • RECEPTOR
  • PDGF

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