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Korean Society for Biochemistry and Molecular Biology (생화학분자생물학회)
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The SH2 domain is crucial for function of Fyn in neuronal migration and cortical lamination

  • Lu, Xi (College of Veterinary Medicine, Northwest A&F University) ;
  • Hu, Xinde (College of Veterinary Medicine, Northwest A&F University) ;
  • Song, Lingzhen (College of Veterinary Medicine, Northwest A&F University) ;
  • An, Lei (College of Veterinary Medicine, Northwest A&F University) ;
  • Duan, Minghui (College of Veterinary Medicine, Northwest A&F University) ;
  • Chen, Shulin (College of Veterinary Medicine, Northwest A&F University) ;
  • Zhao, Shanting (College of Veterinary Medicine, Northwest A&F University)
  • Received : 2014.03.17
  • Accepted : 2014.06.09
  • Published : 2015.02.28
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Abstract

Neurons in the developing brain form the cortical plate (CP) in an inside-out manner, in which the late-born neurons are located more superficially than the early-born neurons. Fyn, a member of the Src family kinases, plays an important role in neuronal migration by binding to many substrates. However, the role of the Src-homology 2 (SH2) domain in function of Fyn in neuronal migration remains poorly understood. Here, we demonstrate that the SH2 domain is essential for the action of Fyn in neuronal migration and cortical lamination. A point mutation in the Fyn SH2 domain ($Fyn^{R176A}$) impaired neuronal migration and their final location in the cerebral cortex, by inducing neuronal aggregation and branching. Thus, we provide the first evidence of the Fyn SH2 domain contributing to neuronal migration and neuronal morphogenesis.

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References

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