MINERVA: A CubeSat for demonstrating DNA damage mitigation against space radiation in C. elegans by using genetic...

Area of Science:

• Space biology
• Astrobiology
• Genetic engineering

Background:

• Space ionizing radiation poses significant health risks to astronauts, causing DNA damage and epigenetic alterations.
• Long-term human space exploration, including interplanetary travel and potential space civilizations, faces radiation as a primary obstacle.

Purpose of the Study:

• To demonstrate a novel technology for inhibiting DNA damage from deep-space radiation exposure.
• To assess the feasibility of genetically modifying an organism for radiation tolerance in space.

Main Methods:

• Genetic engineering of *Caenorhabditis elegans* (*C. elegans*) with the damage suppressor (Dsup) gene from tardigrades.
• Utilizing the Minerva CubeSat mission to culture and sustain *C. elegans* in a cis-lunar orbit environment for four months.
• Employing a biosensor payload for monitoring *C. elegans* under simulated space conditions.

Main Results:

• The Minerva mission successfully demonstrated the feasibility of a CubeSat platform for long-term biological experiments in cis-lunar orbit.
• The study provides a foundation for developing radiation-tolerant organisms for space exploration.
• The Dsup gene shows potential in protecting against space radiation-induced DNA damage in *C. elegans*.

Conclusions:

• The Minerva mission represents a paradigm shift in space medicine and the development of countermeasures for space radiation.
• Genetic engineering offers a viable strategy to mitigate health risks associated with deep-space human exploration.
• This research is a vital step towards ensuring the safety of future missions, including Mars colonization.