Purification of multiple forms of glial growth factor

Glial growth factors (GGFs) were purified from bovine pituitaries using an in vitro rat Schwann cell mitogenesis assay. In addition to an approximately 34-kDa species termed GGF-I, similar in molecular mass to a previously identified molecule (Lemke, G. E., and Brockes, J. P. (1984) J. Neuroscience...

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Veröffentlicht in:The Journal of biological chemistry 1993-08, Vol.268 (24), p.18095-18102
Hauptverfasser: Goodearl, A.D., Davis, J.B., Mistry, K., Minghetti, L., Otsu, M., Waterfield, M.D., Stroobant, P.
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container_end_page 18102
container_issue 24
container_start_page 18095
container_title The Journal of biological chemistry
container_volume 268
creator Goodearl, A.D.
Davis, J.B.
Mistry, K.
Minghetti, L.
Otsu, M.
Waterfield, M.D.
Stroobant, P.
description Glial growth factors (GGFs) were purified from bovine pituitaries using an in vitro rat Schwann cell mitogenesis assay. In addition to an approximately 34-kDa species termed GGF-I, similar in molecular mass to a previously identified molecule (Lemke, G. E., and Brockes, J. P. (1984) J. Neuroscience 4, 75-83), two species named GGF-II and GGF-III were characterized with apparent molecular masses of approximately 59 and approximately 45 kDa, respectively. Highly purified preparations of all species share a similar dose-dependent stimulation of Schwann cell DNA synthesis at nanomolar concentrations. Forskolin synergizes with all three GGFs, shifting their dose dependence 3-8-fold into the sub-nanomolar range. The GGFs, which contain N-linked carbohydrate groups not essential for their in vitro mitogenic effects, are three distinct members of a novel family of glial cell mitogens.
doi_str_mv 10.1016/S0021-9258(17)46816-5
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source MEDLINE; EZB-FREE-00999 freely available EZB journals; Alma/SFX Local Collection
subjects Analytical, structural and metabolic biochemistry
Animals
Biological and medical sciences
Cattle
Cells, Cultured
Chromatography, Affinity
Chromatography, Gel
Chromatography, High Pressure Liquid
Chromatography, Liquid
DNA Replication - drug effects
Durapatite
Electrophoresis, Polyacrylamide Gel
Fundamental and applied biological sciences. Psychology
Glia Maturation Factor
Growth Inhibitors - isolation & purification
Growth Inhibitors - pharmacology
Hydroxyapatites
Molecular Weight
Nerve Tissue Proteins - isolation & purification
Nerve Tissue Proteins - pharmacology
Pituitary Gland - chemistry
Protein hormones. Growth factors. Cytokines
Proteins
Rats
Schwann Cells - cytology
Schwann Cells - drug effects
Schwann Cells - metabolism
Sciatic Nerve - cytology
title Purification of multiple forms of glial growth factor
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