Document Type
Article
Publication Title
JoVE: Journal of Visualized Experiments
Abstract
Capillary electrophoresis immunoassay (CEI), also known as capillary western technology, is becoming a method of choice for screening disease relevant proteins and drugs in clinical trials. Reproducibility, sensitivity, small sample volume requirement, multiplexing antibodies for multiple protein labeling in the same sample, automated high-throughput ability to analyze up to 24 individual samples, and short time requirement make CEI advantageous over the classical western blot immunoassay. There are some limitations of this method, such as the inability to utilize a gradient gel (4%–20%) matrix, high background with unrefined biological samples, and commercial unavailability of individual reagents. This paper describes an efficient method for running CEI in a multiple assay setting, optimizing protein concentration and primary antibody titration in one assay plate, and providing user-friendly templates for sample preparation. Also described are methods for measuring pan TDP-43 and phosphorylated TDP-43 derivative in platelet lysate cytosol as part of the initiative in blood-based biomarker development for neurodegenerative diseases.
DOI
10.3791/60638
Publication Date
2-2020
Keywords
Amyotrophic Lateral Sclerosis, ALS, antibodies, biomarkers, blood platelets, DNA-binding proteins, electrophoresis, immunoassay
ISSN
1940-087X
Recommended Citation
Sage J, Hall L, McVey A, Barohn RJ, Statland JM, Jawdat O, Dimachkie MM, Agbas A. Use of Capillary Electrophoresis Immunoassay to Search for Potential Biomarkers of Amyotrophic Lateral Sclerosis in Human Platelets. JoVE: Journal of Visualized Experiments. 2020; 156. doi: 10.3791/60638.
