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Neuronal α2δ proteins and brain disorders.

Cornelia Ablinger1, Stefanie M Geisler2, Ruslan I Stanika3

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|July 2, 2020
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Alpha-2/delta (α₂δ) proteins regulate nerve cell function and are drug targets for neuropathic pain. Their genes are linked to various brain disorders, suggesting new therapeutic avenues.

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Area of Science:

  • Neuroscience
  • Molecular Biology
  • Genetics

Background:

  • Alpha-2/delta (α₂δ) proteins are crucial glycoproteins in the nervous system, regulating voltage-gated calcium channels and neuronal function.
  • These proteins are the targets of gabapentin and pregabalin, commonly used for neuropathic pain and epilepsy.
  • Four human genes (CACNA2D1-4) encode the α₂δ-1 to α₂δ-4 isoforms.

Purpose of the Study:

  • To review the disease associations of all known α₂δ genes.
  • To hypothesize on the pathophysiological mechanisms underlying these associations.
  • To identify key future research directions for α₂δ proteins in neurological and neuropsychiatric disorders.

Main Methods:

  • Literature review of identified disease associations for CACNA2D1-4 genes.
  • Analysis of known physiological roles of α₂δ proteins in neuronal function.
  • Synthesis of current knowledge to propose pathophysiological mechanisms and future research questions.

Main Results:

  • The α₂δ genes (CACNA2D1-4) have been implicated in epilepsy, autism spectrum disorders, bipolar disorder, schizophrenia, and depression.
  • Dysregulation of α₂δ protein function is hypothesized to contribute to the pathophysiology of these diverse brain disorders.
  • Understanding the specific roles of α₂δ isoforms in disease is critical.

Conclusions:

  • Alpha-2/delta (α₂δ) proteins represent a significant link between genetic variations and a spectrum of neurological and neuropsychiatric disorders.
  • Further research into the precise physiological and pathophysiological functions of α₂δ proteins is warranted.
  • Elucidating these mechanisms may lead to novel therapeutic strategies for brain disorders.