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Neurites and Somata of Sensory and Sympathetic Neurons in Culture Contain Multiple Species of Ganglio sides
Author(s) -
Cornbrooks Carson J.,
Bunge Richard P.,
Gottlieb David I.
Publication year - 1980
Publication title -
journal of neurochemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.75
H-Index - 229
eISSN - 1471-4159
pISSN - 0022-3042
DOI - 10.1111/j.1471-4159.1980.tb09650.x
Subject(s) - neurite , ganglioside , superior cervical ganglion , cervical ganglia , glycolipid , sensory system , glucosamine , neuron , biology , cell culture , microbiology and biotechnology , biochemistry , neuroscience , chemistry , anatomy , in vitro , genetics
We have used tissue culture methods to study the capacity of sensory and sympathetic neurons to synthesize gangliosides. Under appropriate culture conditions, explants of dorsal root or superior cervical ganglia generate an extensive halo of ncurites, which is substantially free of contaminating cells. The cultures incorporate enough [ 3 H]glucosamine into glycolipids to allow biochemical characterization. Gangliosides synthesized by the cells are extracted and freed of radioactive precursors and other lipids by column chromatography. Synthesized material comigrates on (thin‐layer chromatograms with the gangliosides, G Q , G T , G D1a , G D1b , and G M1 , In addition, a substantial amount of unidentified labeled material migrates in a region between the mono‐ and disialo bands. The ganglioside profiles show that a similar spectrum of gangliosides is found on the neurites and somata of a particular class of neuron. Furthermore, the ganglioside compositions of the two types of neuron studied appear to be similar. We conclude that both sensory and adrenergic autonomic neurons synthesize gangliosides of each of the major classes and that representatives of each class are found in both somata and neurites. Dispersed cell cultures of the superior cervical ganglion synthesize a repertoire of gangliosides similar or identical to that of explant cultures.