Preparing normal tissue cells for space flight experiments.

Area of Science:

• Space biology and medicine
• Cell biology
• Biotechnology

Background:

• Deterioration of human health is a significant concern in spaceflight.
• Current in vitro cell research for spaceflight countermeasures is limited by microgravity simulation constraints and long-term cell transport challenges to the International Space Station (ISS).
• Previous ISS research has primarily focused on robust, rapidly growing cells like cancer or progenitor cells, neglecting normal mature cells.

Purpose of the Study:

• To address the need for studying normal mature human cell behavior in microgravity, mimicking in vivo conditions.
• To propose redifferentiable cells as a viable model for long-term spaceflight cell research.
• To identify specific redifferentiable cell types and suitable reprogramming agents.

Main Methods:

• Review of existing research on microgravity simulation techniques (Random Positioning Machine, parabolic flights).
• Analysis of challenges associated with long-term cell culture and transport to the ISS.
• Identification and compilation of redifferentiable cell types and their corresponding reprogramming drugs (e.g., retinoic acid).

Main Results:

• Redifferentiable cells present a promising solution, exhibiting rapid growth similar to cancer cells in standard media.
• These cells can be reprogrammed to a normal cellular state upon addition of specific substances.
• A list of suitable redifferentiable cells and associated drugs is provided.

Conclusions:

• Redifferentiable cells offer a practical model for investigating the effects of long-term spaceflight on normal human cells.
• This approach facilitates research on countermeasures for spaceflight-induced health deterioration.
• The identified cell types and drugs pave the way for future in-depth studies on the ISS.