Extracellular Vesicle Production from Human Blood Vessel Organoids in a Vertical Wheel Bioreactor

Area of Science:

• Stem cell biology
• Extracellular vesicle research
• Bioreactor technology

Background:

• Human-induced pluripotent stem cells (iPSCs) yield extracellular vesicles (EVs) with therapeutic potential for degenerative diseases.
• Traditional 2D culture methods lack scalability and in vivo complexity for EV bio-manufacturing.
• Existing bioreactor systems face challenges with homogeneity and stress, limiting EV production.

Purpose of the Study:

• To describe a method for generating and quantifying EVs from iPSC-differentiated human blood vessel organoids (iBVOs).
• To utilize a scalable vertical wheel bioreactor (VWBR) for efficient EV bio-manufacturing.
• To enable large-scale production of iBVO-derived EVs for preclinical and clinical applications.

Main Methods:

• Expansion of iPSCs and differentiation into iBVOs within VWBRs using specialized media.
• Isolation of EVs secreted by iBVOs from the culture media.
• Quantification of EVs using nanoparticle tracking analysis.

Main Results:

• Demonstration of a method to produce iPSC-derived EVs from organoids in a VWBR.
• Successful isolation and quantification of EVs from iBVO cultures.
• Establishment of a scalable system for EV bio-manufacturing.

Conclusions:

• Vertical wheel bioreactors offer an efficient and scalable approach for iPSC-derived EV production.
• This method facilitates the generation of clinically relevant doses of therapeutic EVs.
• The described system supports the advancement of EV-based therapies for regenerative medicine.