ROCK2 inhibition: A futuristic approach for the management of Alzheimer's disease

Neurosci Biobehav Rev. 2022 Nov:142:104871. doi: 10.1016/j.neubiorev.2022.104871. Epub 2022 Sep 16.

Abstract

Neurons depend on mitochondrial functions for membrane excitability, neurotransmission, and plasticity. Mitochondrial dynamics are important for neural cell maintenance. To maintain mitochondrial homeostasis, lysosomes remove dysfunctional mitochondria through mitophagy. Mitophagy promotes mitochondrial turnover and prevents the accumulation of dysfunctional mitochondria. In many neurodegenerative diseases (NDDs), including Alzheimer's disease (AD), mitophagy is disrupted in neurons. Mitophagy is regulated by several proteins; recently, Rho-associated coiled-coil containing protein kinase 2 (ROCK2) has been suggested to negatively regulate the Parkin-dependent mitophagy pathway. Thus, ROCK2 inhibition may be a promising therapy for NDDs. This review summarizes the mitophagy pathway, the role of ROCK2 in Parkin-dependent mitophagy regulation, and mitophagy impairment in the pathology of AD. We further discuss different ROCK inhibitors (synthetic drugs, natural compounds, and gene therapy-based approaches) and examine their effects on triggering neuronal growth and neuroprotection in AD and other NDDs. This comprehensive overview of the role of ROCK in mitophagy inhibition provides a possible explanation for the significance of ROCK inhibitors in the therapeutic management of AD and other NDDs.

Keywords: Alzheimer’s disease; Mitochondria; Mitophagy; Neurodegeneration; Neuroprotection; Parkin; ROCK.

Publication types

  • Review

MeSH terms

  • Alzheimer Disease* / metabolism
  • Humans
  • Mitochondria / metabolism
  • Mitophagy / genetics
  • Neurons / physiology
  • Ubiquitin-Protein Ligases / genetics
  • Ubiquitin-Protein Ligases / metabolism
  • rho-Associated Kinases / metabolism
  • rho-Associated Kinases / pharmacology

Substances

  • Ubiquitin-Protein Ligases
  • ROCK2 protein, human
  • rho-Associated Kinases