Nature Communications (Mar 2019)

Brain tyrosinase overexpression implicates age-dependent neuromelanin production in Parkinson’s disease pathogenesis

  • Iria Carballo-Carbajal,
  • Ariadna Laguna,
  • Jordi Romero-Giménez,
  • Thais Cuadros,
  • Jordi Bové,
  • Marta Martinez-Vicente,
  • Annabelle Parent,
  • Marta Gonzalez-Sepulveda,
  • Núria Peñuelas,
  • Albert Torra,
  • Beatriz Rodríguez-Galván,
  • Andrea Ballabio,
  • Takafumi Hasegawa,
  • Analía Bortolozzi,
  • Ellen Gelpi,
  • Miquel Vila

DOI
https://doi.org/10.1038/s41467-019-08858-y
Journal volume & issue
Vol. 10, no. 1
pp. 1 – 19

Abstract

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It is unclear if neuromelanin plays a role in Parkinson’s disease pathogenesis since common laboratory animals lack this pigment. Authors show here that overexpression of human tyrosinase in the substantia nigra of rats resulted in an age-dependent production of human-like neuromelanin within nigral dopaminergic neurons and is associated with a Parkinson’s disease phenotype when allowed to accumulate above a specific threshold.