Golgi Complex form and Function: A Potential Hub Role Also in Skeletal Muscle Pathologies?

Area of Science:

• Cell Biology
• Molecular Biology
• Neuroscience

Background:

• Mutations in vesicular transport machinery components are linked to various disorders.
• The early secretory pathway, including the Endoplasmic Reticulum and Golgi Complex (GC), is vital for protein modification and transport.
• The GC's structure and function are critical in disease pathogenesis, with observed alterations in skeletal muscle damage.

Purpose of the Study:

• To investigate the role of the Golgi Complex (GC) in the pathogenesis of skeletal muscle (SKM) disorders.
• To explore the correlation between GC form and function in SKM diseases, drawing parallels with non-muscle conditions.
• To identify the secretory pathway as a potential therapeutic target for muscular dystrophies.

Main Methods:

• Review of existing literature correlating GC morphology with disease.
• Analysis of GC alterations in skeletal muscle cells, including Duchenne muscular dystrophy models.
• Examination of primary and secondary mechanisms by which GC dysfunction impacts the secretory pathway.

Main Results:

• Defective protein modification and trafficking contribute to skeletal muscle damage, as seen in Limb Girdle Muscular Dystrophy.
• Skeletal muscle damage in Duchenne muscular dystrophy is associated with altered GC morphology.
• The GC's form and function are implicated in the onset and progression of certain skeletal muscle disorders.

Conclusions:

• The Golgi Complex (GC) is a key organelle in the pathogenesis of skeletal muscle disorders.
• Altered GC function can impact the secretory pathway through primary or secondary mechanisms, leading to skeletal muscle cell failure.
• The secretory pathway represents a promising therapeutic target for treating muscular dystrophies.