Bio-electrosprayed human neural stem cells are viable and maintain their differentiation potential

Area of Science:

• Biotechnology
• Neuroscience
• Tissue Engineering

Background:

• Bio-electrospray (BES) is an electric-field-driven system capable of generating micro to nano-droplets.
• BES shows promise for tissue engineering applications, particularly in precise cell patterning.
• In vitro central nervous system (CNS) models are crucial for studying cellular and molecular mechanisms due to in vivo limitations.

Purpose of the Study:

• To evaluate the response of human neural stem cells (hNSCs) to the bio-electrospray (BES) process.
• To assess the viability, growth, and differentiation capacity of hNSCs post-BES treatment.
• To determine the suitability of BES for potential applications in CNS research and regenerative medicine.

Main Methods:

• Human neural stem cell (hNSC) lines were subjected to the bio-electrospray (BES) process at 10 kV.
• Cell viability and metabolic activity were monitored post-BES using flow cytometry and metabolic assays.
• Cell differentiation into neurons, astrocytes, and oligodendrocytes was assessed via morphological, protein, and gene expression analyses.

Main Results:

• BES treatment resulted in a minor, transient decrease in hNSC metabolic activity, with full recovery by day 6.
• No significant increase in cell death was detected in bio-electrosprayed hNSCs compared to controls.
• Bio-electrosprayed hNSCs exhibited comparable differentiation efficiency into neurons, astrocytes, and oligodendrocytes as control cells.

Conclusions:

• Human neural stem cells (hNSCs) demonstrate robustness when exposed to the bio-electrospray (BES) process.
• BES is identified as a viable technology for the controlled deposition of hNSCs.
• The findings support the development of BES for precise cell placement in advanced in vitro CNS models.