Molecular and Cellular Mechanisms Affected in ALS

Area of Science:

• Neuroscience
• Molecular Biology
• Genetics

Background:

• Amyotrophic lateral sclerosis (ALS) is a progressive neurodegenerative disease affecting motor neurons.
• Genetic mutations account for ~20% of ALS cases, highlighting the need to understand broader molecular mechanisms.
• Familial and sporadic ALS may share underlying cellular pathway dysfunctions.

Purpose of the Study:

• To review and synthesize current knowledge on molecular pathways implicated in ALS pathogenesis.
• To explore common mechanisms across different forms of ALS.
• To identify potential therapeutic targets by understanding shared molecular pathways.

Main Methods:

• Literature review of studies investigating ALS-associated genes and cellular processes.
• Detailed discussion of key pathways including mitochondrial dysfunction, oxidative stress, and RNA metabolism.
• Analysis of mechanistic roles of ALS genes within these pathways.

Main Results:

• Mutations in over 30 genes are linked to ALS, affecting diverse cellular functions.
• Key implicated pathways include mitochondrial dysfunction, oxidative stress, axonal transport, excitotoxicity, endosomal transport, protein homeostasis, and RNA metabolism.
• Understanding these shared pathways offers insights into both inherited and sporadic ALS.

Conclusions:

• A cohesive understanding of shared molecular pathways is crucial for developing effective ALS therapies.
• Investigating common mechanisms provides a unified approach to tackling ALS heterogeneity.
• Targeting these fundamental cellular processes may offer therapeutic benefits for a wider range of ALS patients.