The new frontier of cancer research is in space

This episode of Science Friday explores a groundbreaking frontier in cancer research: conducting experiments in space. Host Ira Flato introduces Dr. Katrina Jamieson, a hematologist at UC San Diego, and Dr. Minol Datta, a cancer physicist at the University of Notre Dame, who are pioneering the use of the International Space Station to study tumor growth. They reveal that cancer organoids grow up to 10 times faster in microgravity—tripling in size in just 10 days versus 10 years on Earth—due to the activation of previously ignored 'junk DNA' and the gene ADAR1. This accelerated growth has led to the discovery of Rebexinib, a promising drug that acts as a 'cancer kill switch' and is now entering phase one clinical trials. The research also uncovers how space stress triggers immune system changes, revealing both risks and surprising resilience in astronauts' stem cells. The conversation extends to broader implications: space-based research could revolutionize treatments not only for cancer but also for autoimmune disorders, neurodegenerative diseases, and aging-related conditions. Both scientists express optimism that commercial space platforms will soon enable a new era of rapid, human-in-the-loop biomedical discovery. Key takeaways include: 1) Microgravity accelerates tumor growth by activating dormant genetic pathways like ADAR1, offering a powerful tool to study cancer biology; 2) Space research has already led to a promising new drug, Rebexinib, now in clinical trials; 3) Astronauts show unexpected stem cell resilience under space stress, suggesting potential for boosting human defenses against early cancers; 4) Immune cells in space behave like they do in human tumors—turning against the body—offering new insights into immune suppression; 5) Patient-derived organoids from glioblastoma and metastatic cancers will soon be tested in space to uncover new drug targets; 6) The future of space medicine lies in commercial, accessible labs that combine human expertise with autonomous systems; 7) This research is not just about curing cancer—it’s about understanding aging, inflammation, and disease resilience at a fundamental level; 8) The collaboration between biologists and engineers in space is essential for unlocking breakthroughs that Earth-based labs cannot achieve.