A Platform for Studying Neurodegeneration Mechanisms Using Genetically Encoded Biosensors

Area of Science:

• Stem Cell Biology
• Neuroscience
• Biotechnology

Background:

• Patient-specific induced pluripotent stem cells (iPSCs) offer a powerful model for disease research but lack standardized application strategies.
• Genetically encoded biosensors allow real-time monitoring of cellular processes and molecular changes, converting signals into quantitative data.

Purpose of the Study:

• To develop a universal cell-based platform for studying pathological processes in amyotrophic lateral sclerosis (ALS).
• To create tools for evaluating the impact of specific molecules on ALS pathology development.

Main Methods:

• Development of plasmid constructs for monitoring endoplasmic reticulum stress, oxidative stress, apoptosis, and Ca2+-dependent hyperexcitability.
• Generation of transgenic iPSC lines, including one with a superoxide dismutase 1 (SOD1) gene mutation relevant to ALS, and a healthy control line.
• Utilizing doxycycline-controlled transcriptional activation for single-step biosensor insertion into both iPSC lines.

Main Results:

• A novel cell-based platform for ALS research was successfully established.
• The platform integrates multiple biosensors to track key pathological indicators in real-time.
• Generated iPSC lines are equipped for facile integration of biosensors, facilitating disease modeling.

Conclusions:

• The developed platform provides a robust and adaptable model for investigating ALS pathogenesis.
• This approach facilitates the study of molecular mechanisms underlying ALS and the testing of therapeutic interventions.
• The platform's design supports broad applicability in studying various cellular stresses and excitability changes relevant to neurodegenerative diseases.