Related Experiment Video
Updated: Oct 18, 2025

Use of Capillary Electrophoresis Immunoassay to Search for Potential Biomarkers of Amyotrophic Lateral Sclerosis in Human Platelets
Published on: February 10, 2020
Serum programmed cell death proteins in amyotrophic lateral sclerosis
David R Beers1, Weihua Zhao1, Jason R Thonhoff1
1Peggy and Gary Edwards ALS Laboratory, Department of Neurology, Houston Methodist Neurological Institute, Houston Methodist Research Institute, Houston Methodist Hospital, Houston, TX, USA.
Soluble programmed cell death proteins (sPD-1, sPD-L1, sPD-L2) were elevated in amyotrophic lateral sclerosis (ALS) patients. These elevated levels correlate with disease burden, suggesting a role for peripheral inflammation in ALS.
Area of Science:
- Neuroimmunology
- Neuromuscular Disorders
Background:
- Amyotrophic lateral sclerosis (ALS) is a complex inflammatory neuromuscular disease.
- Programmed cell death-1 (PD-1) and its ligands (PD-L1/L2) regulate immune suppression.
- Soluble forms (sPD-1/sPD-L1/sPD-L2) can counteract immune suppression and promote inflammation.
Purpose of the Study:
- To investigate elevated serum levels of sPD-1, sPD-L1, and sPD-L2 in ALS patients.
- To determine the correlation between these soluble programmed cell death proteins and ALS disease burden.
Main Methods:
- Serum samples from ALS patients were analyzed for sPD-1, sPD-L1, and sPD-L2 levels.
- Statistical analysis was performed to assess correlations with disease burden.
Main Results:
- sPD-1 and sPD-L2 were significantly elevated in the sera of ALS patients compared to controls.
- Elevated sPD-1 and sPD-L2 levels correlated with increased disease burden in ALS patients.
Conclusions:
- Increased serum levels of sPD-1 and sPD-L2 support the contribution of peripheral pro-inflammatory responses to systemic inflammation in ALS.
- These findings highlight the potential role of the PD-1 pathway in ALS pathogenesis.
More Related Videos
13:31Novel Atomic Force Microscopy Based Biopanning for Isolation of Morphology Specific Reagents against TDP-43 Variants in Amyotrophic Lateral Sclerosis
Published on: February 12, 2015
07:14Optogenetic Phase Transition of TDP-43 in Spinal Motor Neurons of Zebrafish Larvae
Published on: February 25, 2022
Related Concept Videos
Satellite Stem Cells and Muscular Dystrophy
Apoptosis
Overview of Cell Death
Cell death was observed in the early 19th century, but there was no experimental evidence to prove it. In 1842, Carl Vogt first discovered cell death in a metamorphic toad; however, it was not termed ‘cell death.’ Scientists discovered different cell death pathways only in the...
Parkinson's Disease: Overview
Autophagic Cell Death
Autophagy and Apoptosis
Autophagy can activate apoptosis. In normal conditions, the autophagy activating protein Beclin-1 and...
The Proteasome
In this pathway, the target proteins are first tagged with small proteins called ubiquitin. This involves participation of a series of enzymes including— E1 (ubiquitin-activating enzyme), E2 (ubiquitin-conjugating enzyme), and E3...