NASA is pushing the boundaries of personalized medicine with its groundbreaking AVATAR (A Virtual Astronaut Tissue Analog Response) experiment, slated for the Artemis II mission. This innovative project aims to revolutionize astronaut healthcare during long-duration spaceflights, paving the way for safer lunar and Martian expeditions. The core of AVATAR lies in its use of organ-on-a-chip technology. These miniature, USB-drive sized devices, containing living cells from the Artemis II astronauts, will simulate the effects of deep space radiation and microgravity on human organs. By flying these 'avatars' alongside the crew on their 10-day lunar journey, researchers can gain invaluable real-time data on individual responses to the harsh space environment.
This collaborative effort, involving NASA, government agencies, and private industry partners like Emulate, Inc., represents a significant leap forward in understanding human biology in extreme conditions. The data collected will not only be crucial for safeguarding astronaut health on future missions but will also accelerate advancements in personalized medicine on Earth. The focus of Artemis II's AVATAR experiment is on bone marrow, an organ highly sensitive to radiation and crucial to the immune system. Understanding how deep space radiation and microgravity affect bone marrow cell development is paramount for ensuring astronaut well-being during extended space travel, especially beyond the protective shield of Earth's magnetosphere.
Prior to the mission, astronauts will provide blood samples. Emulate, Inc. will then isolate and purify bone marrow-derived stem and progenitor cells from these samples, using magnetic beads. These purified cells will be integrated into the organ-on-a-chip devices, creating a model of bone marrow function. The organ chips will be housed in a custom-built, battery-powered payload developed by Space Tango, ensuring automated environmental control throughout the Artemis II mission.
Post-mission, sophisticated single-cell RNA sequencing will analyze the changes in gene expression within the organ chips, providing unprecedented detail on the effects of spaceflight. This data will be compared with results from a parallel ground-based study, creating a comprehensive picture of how deep space affects human cells. The knowledge gained will be essential for tailoring medical supplies and protocols to individual astronauts, mitigating potential health risks during future missions to the Moon, Mars, and beyond. This initiative underlines NASA's commitment to ensuring astronaut safety and its dedication to advancing scientific understanding for the benefit of space exploration and global health.
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Originally published at: https://science.nasa.gov/directorates/smd/avatars-for-astronaut-health-nasa-artemis-ii/
