T cells in amyotrophic lateral sclerosis.

Area of Science:

• Neuroimmunology
• Neuroinflammation
• Motor Neuron Disease

Background:

• Inflammation in ALS involves T cells and antigen-presenting cells, correlating with motor neuron damage in the central nervous system.
• The precise role of T cells in ALS pathogenesis remains unclear, with possibilities including direct or indirect motor neuron damage, or a response to neuronal death.

Purpose of the Study:

• To review the evidence supporting T cells as both pathogenic factors and potential therapeutic targets in amyotrophic lateral sclerosis (ALS).

Main Methods:

• Literature review of studies on T cell involvement in ALS pathogenesis and neuroinflammation.
• Analysis of findings from animal models of neurodegeneration and neuroinflammation.
• Examination of glatiramer acetate's role in ALS models and clinical trials.

Main Results:

• T cells may directly or indirectly harm motor neurons via cell contact, cytokine release, or by activating microglia and macrophages.
• Alternatively, T cell infiltration might be a response to motor neuron death.
• Animal models indicate T cell responses can be neuroprotective or promote neurogenesis.

Conclusions:

• T cells represent a potential therapeutic target in ALS, with the possibility of modulating them to reduce motor neuron destruction and enhance repair.
• Glatiramer acetate, a T cell-modulating drug, shows promise in preclinical ALS models and is under investigation in human trials.