Released form of CNTF receptor alpha component as a soluble mediator of CNTF responses

Science. 1993 Mar 19;259(5102):1736-9. doi: 10.1126/science.7681218.

Abstract

The alpha component of the receptor for ciliary neurotrophic factor (CNTF) differs from other known growth factor receptors in that it is anchored to cell membranes by a glycosylphosphatidylinositol linkage. One possible function of this type of linkage is to allow for the regulated release of this receptor component. Cell lines not normally responsive to CNTF responded to treatment with a combination of CNTF and a soluble form of the CNTF alpha receptor component. These findings not only demonstrate that the CNTF receptor alpha chain is a required component of the functional CNTF receptor complex but also reveal that it can function in soluble form as part of a heterodimeric ligand. Potential physiological roles for the soluble CNTF receptor are suggested by its presence in cerebrospinal fluid and by its release from skeletal muscle in response to peripheral nerve injury.

Publication types

  • Comparative Study

MeSH terms

  • Animals
  • Cell Differentiation / drug effects
  • Cell Division / drug effects
  • Cell Membrane / metabolism
  • Ciliary Neurotrophic Factor
  • Cloning, Molecular
  • Gene Expression
  • Glycosylphosphatidylinositols / metabolism
  • Growth Inhibitors / pharmacology
  • Hematopoietic Stem Cells / cytology
  • Hematopoietic Stem Cells / drug effects
  • Humans
  • Interleukin-6 / pharmacology
  • Leukemia Inhibitory Factor
  • Lymphokines / pharmacology
  • Mice
  • Muscle Denervation
  • Muscles / innervation
  • Muscles / metabolism
  • Nerve Tissue Proteins / pharmacology*
  • Phosphatidylinositol Diacylglycerol-Lyase
  • Phosphoric Diester Hydrolases / metabolism
  • Phosphotyrosine
  • RNA, Messenger / genetics
  • Rats
  • Receptor, Ciliary Neurotrophic Factor
  • Receptors, Cell Surface / chemistry
  • Receptors, Cell Surface / physiology*
  • Signal Transduction / physiology
  • Tumor Cells, Cultured
  • Tyrosine / analogs & derivatives
  • Tyrosine / metabolism

Substances

  • Ciliary Neurotrophic Factor
  • Glycosylphosphatidylinositols
  • Growth Inhibitors
  • Interleukin-6
  • LIF protein, human
  • Leukemia Inhibitory Factor
  • Lif protein, mouse
  • Lymphokines
  • Nerve Tissue Proteins
  • RNA, Messenger
  • Receptor, Ciliary Neurotrophic Factor
  • Receptors, Cell Surface
  • Phosphotyrosine
  • Tyrosine
  • Phosphoric Diester Hydrolases
  • Phosphatidylinositol Diacylglycerol-Lyase