Stem Cell Reviews and Reports

, Volume 8, Issue 3, pp 755–767

Extrinsic Purinergic Regulation of Neural Stem/Progenitor Cells: Implications for CNS Development and Repair

  • Henning Ulrich
  • Maria P. Abbracchio
  • Geoffrey Burnstock


There has been tremendous progress in understanding neural stem cell (NSC) biology, with genetic and cell biological methods identifying sequential gene expression and molecular interactions guiding NSC specification into distinct neuronal and glial populations during development. Data has emerged on the possible exploitation of NSC-based strategies to repair adult diseased brain. However, despite increased information on lineage specific transcription factors, cell-cycle regulators and epigenetic factors involved in the fate and plasticity of NSCs, understanding of extracellular cues driving the behavior of embryonic and adult NSCs is still very limited. Knowledge of factors regulating brain development is crucial in understanding the pathogenetic mechanisms of brain dysfunction. Since injury-activated repair mechanisms in adult brain often recapitulate ontogenetic events, the identification of these players will also reveal novel regenerative strategies. Here, we highlight the purinergic system as a key emerging player in the endogenous control of NSCs. Purinergic signalling molecules (ATP, UTP and adenosine) act with growth factors in regulating the synchronized proliferation, migration, differentiation and death of NSCs during brain and spinal cord development. At early stages of development, transient and time-specific release of ATP is critical for initiating eye formation; once anatomical CNS structures are defined, purinergic molecules participate in calcium-dependent neuron-glia communication controlling NSC behaviour. When development is complete, some purinergic mechanisms are silenced, but can be re-activated in adult brain after injury, suggesting a role in regeneration and self-repair. Targeting the purinergic system to develop new strategies for neurodevelopmental disorders and neurodegenerative diseases will be also discussed.


ATP Brain injury Eye Purinergic Regeneration Neural stem cell Transcription factor 

Copyright information

© Springer Science+Business Media, LLC 2012

Authors and Affiliations

  • Henning Ulrich
    • 1
  • Maria P. Abbracchio
    • 2
  • Geoffrey Burnstock
    • 3
  1. 1.Departamento de BioquimicaInstituto de Quimica, Universidade de São PauloSão PauloBrazil
  2. 2.Department of Pharmacological SciencesLaboratory of Molecular and Cellular Pharmacology of Purinergic Transmission, University of MilanMilanItaly
  3. 3.Autonomic Neuroscience CentreUniversity College Medical SchoolLondonUK

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