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Mitochondrial Dynamics: Molecular Mechanisms, Related Primary Mitochondrial Disorders and Therapeutic Approaches

Michela Di Nottia1, Daniela Verrigni1, Alessandra Torraco1

  • 1Laboratory of Molecular Medicine, Unit of Muscular and Neurodegenerative Disorders, Bambino Gesù Children's Hospital, IRCCS, 00146 Rome, Italy.

Genes
|February 13, 2021
PubMed

Insights

Mitochondria dynamically divide (fission) and merge (fusion) via conserved proteins. Disruptions in this balance are linked to diseases like cancer and neurodegeneration.

Area of Science:

  • Cell Biology
  • Mitochondrial Dynamics

Background:

  • Mitochondria exist as dynamic networks, not isolated units.
  • Mitochondrial network structure is regulated by fission and fusion processes.
  • These processes are crucial for cellular health and function.

Purpose of the Study:

  • To explore the fundamental processes of mitochondrial fission and fusion.
  • To understand the role of these processes in cellular communication and organelle biogenesis.
  • To highlight the implications of disrupted mitochondrial dynamics in disease.

Main Methods:

  • Focus on the conserved guanosine triphosphatase proteins and their interactors that regulate fission and fusion.
  • Analysis of the consequences of disrupting the fission-fusion equilibrium.

Main Results:

  • Mitochondrial fission generates smaller organelles, supporting biogenesis.
  • Mitochondrial fusion creates interconnected tubules, enhancing inter-organelle communication.
  • Dysregulation of fission and fusion is implicated in various pathologies.

Conclusions:

  • Mitochondrial fission and fusion are essential, balanced processes regulated by specific proteins.
  • Imbalances in mitochondrial dynamics are linked to significant diseases, including cancer and neurodegeneration.
  • Mutations in fission/fusion genes are causative in some neurogenetic disorders.
Keywords:
mitochondrial diseasesmitochondrial dynamicstherapeutic approaches

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