Calcium dysregulation links ALS defective proteins and motor neuron selective vulnerability

Area of Science:

• Neuroscience
• Genetics
• Cell Biology

Background:

• Amyotrophic lateral sclerosis (ALS) is a fatal neurodegenerative disease affecting motor neurons (MN).
• Over 20 gene loci are linked to ALS, with associated proteins accumulating in MNs.
• The precise reasons for MN vulnerability in ALS remain unclear.

Purpose of the Study:

• To review evidence linking ALS-related protein mutations to disrupted calcium (Ca2+) signaling pathways in MN.
• To explore the role of Ca2+ in MN degeneration in ALS.
• To argue that Ca2+ dysregulation contributes to selective MN susceptibility in ALS.

Main Methods:

• Review of existing scientific literature and evidence.
• Analysis of the impact of Ca2+ signaling on ALS-related proteins and cellular processes.
• Examination of the relationship between Ca2+ dysregulation and MN vulnerability.

Main Results:

• Mutations in ALS-related proteins disrupt fundamental Ca2+ signaling pathways in MN.
• Ca2+ directly and indirectly impacts critical ALS proteins and cellular processes.
• Dysregulated intracellular Ca2+ is associated with pathogenicity and protein crosstalk in ALS.

Conclusions:

• Ca2+ deregulation in MN is central to various ALS processes.
• Altered Ca2+ signaling is a significant factor in the selective vulnerability of MN to ALS.
• Targeting Ca2+ pathways may offer therapeutic avenues for ALS.