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Assessment of Resistance to Tyrosine Kinase Inhibitors by an Interrogation of Signal Transduction Pathways by Antibody Arrays
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Functional aspects of a tyrosine kinase encoding protooncogene, the c-src gene

A Barnekow1

  • 1University of Münster, Dept. Exp. Tumorbiology, Germany.

Behring Institute Mitteilungen
|July 1, 1991
PubMed

Insights

The c-src tyrosine kinase is crucial for multicellular organization in primitive organisms. It also plays a vital role in neuronal signal transduction and axonal transport in more complex life.

Area of Science:

  • Molecular Biology
  • Evolutionary Biology
  • Neuroscience

Background:

  • The src gene family comprises non-receptor protein tyrosine kinases.
  • The c-src gene product, pp60c-src, is a key kinase studied for its diverse roles.

Purpose of the Study:

  • Investigate the evolutionary expression of the c-src gene.
  • Elucidate the function of c-src in cellular differentiation and proliferation.
  • Determine the role of c-src in primitive multicellular organisms and neuronal functions.

Main Methods:

  • Studied c-src gene expression across different evolutionary stages.
  • Examined tissue-specific expression patterns, focusing on neuronal cells.
  • Investigated the phosphorylation of synaptophysin by c-src in vitro and in synaptic vesicles.

Main Results:

  • c-src tyrosine kinase may be involved in the development and maintenance of multicellularity in primitive organisms.
  • Elevated pp60c-src levels were observed in neuronal cells.
  • Synaptophysin, a synaptic vesicle protein, is phosphorylated by c-src.

Conclusions:

  • The c-src tyrosine kinase is implicated in the evolution of multicellularity.
  • pp60c-src is essential for neuronal signal transduction and/or axonal transport mechanisms.

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