Scalable Microgravity Simulator Used for Long-Term Musculoskeletal Cells and Tissue Engineering

Area of Science:

• Biotechnology
• Cell Biology
• Space Science

Background:

• Simulating microgravity is crucial for understanding cellular responses in space and for applications like tissue engineering.
• Existing devices like random positioning machines (RPM) and rotating wall vessels (RWV) are widely used but have limitations.
• Developing accessible and reliable microgravity simulators is essential for advancing research.

Purpose of the Study:

• To introduce and validate a novel, scalable, and user-friendly benchtop microgravity simulator (MGS).
• To ensure equitable treatment of all cell cultures within the simulator.
• To compare the performance of the MGS with established microgravity simulation devices (RPM and RWV).

Main Methods:

• The new microgravity simulator (MGS) utilizes improved algorithms and design for uniform sample treatment.
• Human bone marrow stem cells (bMSC) and mouse skeletal muscle myoblasts (C2C12) were cultured for 4 days.
• Cell cultures were simultaneously run on the MGS and either RPM or RWV for comparative analysis.

Main Results:

• Osteogenic marker overexpression was observed in bMSC cultured on both MGS and RPM with osteogenic medium.
• Myogenesis marker downregulation was significant in C2C12 cells cultured on both MGS and RWV under simulated microgravity.
• The MGS demonstrated comparable results to RPM and RWV, validating its efficacy.

Conclusions:

• The new microgravity simulator (MGS) provides a reliable and accessible platform for long-term cell culture under simulated microgravity.
• The MGS ensures consistent experimental conditions, yielding results comparable to gold-standard devices.
• Future upgrades for real-time monitoring will enhance its utility for tissue engineering and long-duration studies.