Ep. 320: “Cancer Under Pressure” Featuring Dr. Meenal Datta

In this episode of The Stem Cell Podcast, hosts Daylon James and Arun Sharma welcome Dr. Meenal Datta from the University of Notre Dame to discuss her groundbreaking research on the role of mechanical forces in cancer progression, particularly in glioblastoma. Datta’s lab, the Tumor Immune Microenvironment Mechanics Lab (TIME Lab), investigates how physical and mechanical properties of the tumor microenvironment—especially solid stresses from tumor growth—impede immune cell function and promote treatment resistance. The conversation begins with a roundup of recent scientific highlights, including a study showing that mechanical load in the heart inhibits cancer growth via chromatin remodeling and the mechanotransducer protein Nespiron-2, and a discovery of a long non-coding RNA called 'hot scramble' that regulates hematopoietic stem cell self-renewal and may be a therapeutic target in acute myeloid leukemia. Another highlight features a deep learning approach to repurpose azole drugs for treating Leigh syndrome using brain organoids. The core of the episode centers on Datta’s innovative work using microgravity on the International Space Station to grow patient-derived glioblastoma organoids, which exhibit more aggressive, immunosuppressive, and spatially organized behaviors than ground-based models. She argues that space-based research offers a unique platform to study tumor mechanics without gravitational artifacts, accelerating the development of better models and therapies. The hosts and guest reflect on the future of orbital oncology, the democratization of space research, and the importance of embracing failure in scientific discovery. The episode concludes with a heartfelt discussion on the transformative potential of integrating space-based biomedicine with terrestrial research to improve patient outcomes. Key takeaways include: 1) Mechanical forces in tumors are a critical, underappreciated hallmark of cancer that suppress immune responses; 2) Microgravity enables superior 3D tumor modeling by eliminating sedimentation and buoyancy artifacts; 3) Space-based organoid research can accelerate drug discovery and personalized medicine; 4) Failure is essential to innovation—especially in high-risk, high-reward fields like space biology; 5) Interdisciplinary collaboration between engineers, biologists, and clinicians is key to advancing cancer therapeutics. The episode is marked by a deeply positive and inspiring tone, celebrating scientific curiosity, bold experimentation, and the potential of space to revolutionize medicine.