An Effective Cell Coculture Platform Based on the Electrospun Microtube Array Membrane for Nerve Regeneration

Area of Science:

• Biomaterials Science
• Cell Biology
• Neuroscience

Background:

• Cell coculture systems are crucial for studying cell-cell interactions.
• Traditional platforms like Transwell inserts have limitations in mimicking in vivo environments.
• Developing advanced scaffolds is essential for improving coculture outcomes.

Purpose of the Study:

• To evaluate the efficacy of an electrospun polylactic acid (PLLA) microtube array membrane (MTAM) as a novel cell coculture platform.
• To compare the performance of the MTAM system with traditional Transwell systems for culturing rat fetal neural stem cells (NSC) and astrocytes.
• To investigate the interaction between NSC and astrocytes using the MTAM platform.

Main Methods:

• Fabrication of an electrospun PLLA microtube array membrane (MTAM) with submicron scale fibers.
• Coculturing rat fetal neural stem cells (NSC) and astrocytes using both MTAM and Transwell systems.
• Assessing NSC viability using immunostaining.
• Analyzing cell-cell interaction through reverse transcription polymerase chain reaction (RT-PCR) to measure gene expression (doublecortin and nestin).

Main Results:

• Superior NSC viability was observed in the electrospun PLLA MTAM compared to tissue culture polystyrene (TCP) and Transwell inserts.
• RT-PCR analysis indicated a strong interaction between astrocytes and NSC.
• Higher expression of doublecortin and lower expression of nestin were detected in the MTAM coculture system, suggesting enhanced NSC differentiation and interaction.

Conclusions:

• The electrospun PLLA MTAM is a superior coculture platform compared to the traditional Transwell system.
• MTAM facilitates enhanced neural stem cell viability and promotes significant interaction between neural stem cells and astrocytes.
• This novel biomaterial holds promise for advanced cell coculture applications in regenerative medicine and neuroscience research.