Molecular Neurobiology

, Volume 47, Issue 2, pp 770–781 | Cite as

FGF-2 Low Molecular Weight Selectively Promotes Neuritogenesis of Motor Neurons In Vitro

  • Ilary Allodi
  • Laura Casals-Díaz
  • Eva Santos-Nogueira
  • Francisco Gonzalez-Perez
  • Xavier Navarro
  • Esther UdinaEmail author


In this study, we screened in vitro the different capabilities of trophic factors with promising effect for enhancing selective regeneration and thus promoting specific reinnervation of target organs after peripheral nerve regeneration. We found that FGF-2 (18 kDa) was the trophic factor that exerted the most selective effect in promoting neurite outgrowth of spinal motoneurons both in terms of elongation and arborization. The mechanism underlying this effect on neuritogenesis seems related to FGF-2 enhancing the interaction between FGFR-1 and PSA-NCAM. The interaction of these two receptors is important during the early stages of neuritogenesis and pathfinding, while integrin alpha7B subunit seems to play a role during neurite stabilization.


Axonal regeneration Motor neuron Sensory neuron In vitro cultures FGF-2 Cell adhesion molecules FGFR-1 



This research was supported by grants FP7-MC-214003-2 (Marie Curie Initial Training Network AXREGEN) and FP7-278612 (BIOHYBRID) from the EU, grant PI080598 and TERCEL and CIBERNED funds from the Fondo de Investigación Sanitaria of Spain. The authors thank Dr Rubèn López-Vales for expert support in the co-immunoprecipitation assay and the technical help of Monica Espejo, Jessica Jaramillo and Marta Morell. The anti-alpha7B antibody was a generous gift of Prof. Guido Tarone, Universitá di Torino. The RT97 antibody was obtained from the Developmental Studies Hybridoma Bank developed under the auspices of the NICHD and maintained by the University of Iowa, Department of Biology.


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Copyright information

© Springer Science+Business Media New York 2012

Authors and Affiliations

  • Ilary Allodi
    • 1
  • Laura Casals-Díaz
    • 1
  • Eva Santos-Nogueira
    • 1
  • Francisco Gonzalez-Perez
    • 1
  • Xavier Navarro
    • 1
  • Esther Udina
    • 1
    • 2
    Email author
  1. 1.Group of Neuroplasticity and Regeneration, Institute of Neurosciences and Department of Cell Biology, Physiology and ImmunologyUniversitat Autònoma de Barcelona, and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED)BellaterraSpain
  2. 2.Faculty of MedicineUniversitat Autònoma de BarcelonaBellaterraSpain

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