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Author Spotlight: Insight Into Advances in Prion Diseases Research
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Cell-based therapy against prion diseases.

Aroa Relaño-Ginés1, Sylvain Lehmann2, Carole Crozet3

  • 1Institute for Regenerative Medicine and Biotherapies (IRMB), Neural Stem Cell, MSC and Neurodegenerative Diseases - U1183 INSERM (Institut National de la Santé et de la Recherche Médicale), 80 rue Augustin Fliche, 34295 Montpellier, France; Université de Montpellier, 163 rue Auguste Broussonet, 34090 Montpellier, France.

Current Opinion in Pharmacology
|November 26, 2018
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Summary

Prion diseases remain incurable, as current treatments cannot reverse brain damage. Cell-based therapies show promise for repairing existing damage and promoting brain repair through cell replacement and trophic factor secretion.

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Area of Science:

  • Neuroscience
  • Cell Biology
  • Prion Disease Research

Background:

  • Prion diseases are currently incurable neurodegenerative disorders.
  • Existing treatments focus on inhibiting pathological prion protein (PrPSc) accumulation but do not reverse brain damage.
  • Cellular prion protein (PrPC) conversion to PrPSc is a key pathological event.

Purpose of the Study:

  • To explore cell-based therapeutic strategies for repairing pre-existing brain damage in prion diseases.
  • To investigate the potential of various cell types, including neural stem cells, microglia, and mesenchymal stem cells, in prion disease therapy.
  • To understand the mechanisms underlying cell-based therapy benefits, including cell replacement and neurotrophic factor secretion.

Main Methods:

  • Review of preclinical studies on cell-based therapies for prion diseases.
  • Analysis of cell sources such as neural stem cells, bone marrow-derived microglia, and mesenchymal stem cells.
  • Evaluation of potential therapeutic mechanisms, including cell replacement and modulation of neuroinflammation and neurogenesis.

Main Results:

  • Preclinical data suggest cell-based strategies can address existing brain pathology.
  • Benefits may arise from direct cell replacement and the secretion of beneficial trophic factors.
  • Grafted cells might modulate inflammation, reduce cell death, and stimulate endogenous neurogenesis.

Conclusions:

  • Cell-based therapies offer a novel approach to potentially reverse brain damage in prion diseases.
  • Further research is warranted to optimize cell sources and therapeutic mechanisms for clinical application.
  • These strategies hold promise for addressing the limitations of current prion disease treatments.