3D co-culture model of amyotrophic lateral sclerosis for bioassay platforms

Overview

The proposed solution is a high-resolution 3D co-culture model designed to replicate the pathophysiology of amyotrophic lateral sclerosis (ALS). This innovative model integrates induced pluripotent stem cell (iPSC)-derived motor neurons (MNs) and skeletal muscle cells within an optimized biofabricated environment. The objective is to accurately mimic key features of ALS, such as motor neuron degeneration, impaired neuromuscular junction (NMJ) function, and neuroinflammatory responses. This platform serves as a valuable bioassay tool that bridges the gap between traditional in vitro systems and human disease, facilitating the study of ALS mechanisms and the testing of therapeutic interventions.

Technical specifications

• Biofabrication: Utilizes high-resolution bioprinting techniques to create multimaterial systems that mimic innervation structures in muscle, enabling the replication of pathological phenotypes.
• Co-culture System: Combines myoblasts with neurons and endothelial cells to simulate neuromuscular interactions, achieving functional differentiation and responsiveness to stimuli.
• Validation Techniques: Includes immunostaining, confocal imaging, and quantitative analysis of markers such as TDP-43 aggregates, oxidative stress indicators, and inflammatory cytokines.
• Functional Endpoints: Assesses synaptic stability, Ca²⁺ dynamics, and myotube activation through image analysis during actuation experiments.

Technology readiness level

This technology is currently at TRL 4, having been validated in laboratory settings with ALS-patient-derived motoneurons and skeletal muscle cells. The model has demonstrated the capacity to reflect ALS-specific phenotypes and is undergoing further validation for dynamic analysis and therapeutic testing.