Thermosensitive chitosan-based hydrogels supporting motor neuron-like NSC-34 cell differentiation

Area of Science:

• Biomaterials Science
• Neuroscience
• Tissue Engineering

Background:

• Motor neuron diseases are neurodegenerative conditions lacking effective treatments.
• Existing experimental models do not accurately replicate disease pathology.
• Three-dimensional (3D) culture systems offer a more physiologically relevant environment.

Purpose of the Study:

• To develop a novel thermosensitive hydrogel for 3D in vitro modeling of motor neuron diseases.
• To assess the hydrogel's suitability for supporting motor neuron cell viability and differentiation.

Main Methods:

• Development of a thermosensitive chitosan-based hydrogel using β-glycerophosphate (βGP) and sodium hydrogen carbonate (SHC).
• Optimization of hydrogel preparation for homogeneity, physicochemical properties, and cell encapsulation.
• Culture of neuroblastoma/spinal cord hybrid (NSC-34) cells within the hydrogel for over two weeks.

Main Results:

• The developed hydrogel exhibited optimal mechanical properties and injectability, with sol-gel transition at 37 °C.
• The hydrogel formulation supported NSC-34 cell viability for over two weeks.
• Encapsulated cells differentiated into motor neuron-like cells with extended neurites.

Conclusions:

• The developed chitosan-based hydrogel is a promising biomaterial for creating advanced 3D in vitro models.
• This system facilitates the study of motor neuron diseases and the development of potential therapeutics.