A three-year, nearly $5 million award from NASA will allow researchers at the Sanford Stem Cell Clinical Center at UC San Diego Health, Sanford Consortium for Regenerative Medicine and their partners at Space Tango to develop a new integrated space stem cell orbital research laboratory within the International Space Station (ISS) and launch three collaborative research projects within it.
Stem cells self-renew, generating more stem cells, and specialize into tissue-specific cells, such as blood, brain and liver cells, making them ideal for biological studies far from Earths resources. The goal of the new effort is to leverage microgravity and these unique properties of stem cells to better understand how space flight affects the human body. The studies will also inform how aging, degenerative diseases, cancers and other conditions develop in a setting with increased exposure to ionizing radiation and pro-inflammatory factors. The findings from these studies may speed the development of new therapeutics for a broad array of degenerative diseases on Earth.
International Space Station (ISS) as seen from Space Shuttle Discovery in 2007. Credit: NASA
We envision that the next thriving ecosystem of commercial stem cell companies, the next nexus for biotechnology, could be created 250 miles overhead by the establishment of these capabilities on the ISS, said Catriona Jamieson, MD, PhD, co-principal investigator of the award and Koman Family Presidential Endowed Chair in Cancer Research, deputy director of Moores Cancer Center, director of the Sanford Stem Cell Clinical Center and director of the CIRM Alpha Stem Cell Clinic at UC San Diego Health.
The projects first flight to the ISS is planned for mid-2021. The ISS stem cell lab is expected to be fully operational and self-sustaining by 2025.
With hardware designed by Space Tango, a developer of fully automated, remote-controlled systems for research and manufacturing on orbit, initial projects in the new lab will include investigations of:
Blood cancers and immune reactivation syndromes, led by Jamieson, who is also a member of the Sanford Consortium for Regenerative Medicine, and Sheldon Morris, MD, MPH, clinical professor of family medicine and public health and infectious diseases at UC San Diego School of Medicine.
In whats known as the NASA Twins Study, investigators around the nation assessed identical twin astronauts Scott and Mark Kelly. Scott flew aboard the ISS for 342 days in 2015 and 2016, while his identical twin brother, Mark, remained on Earth. In a paper published in Science in early 2019, researchers, including UC San Diego School of Medicines Brinda Rana, PhD, described the many ways Scotts body differed from Marks due to his time spent in microgravity, including signs of pre-cancer.
Co-Principal Investigator Catriona Jamieson, MD, PhD.
In the new ISS lab, Jamieson and Morris will use stem cell-derived blood and immune cells to look for biomarkers tell-tale molecular changes as cancer develops and immune cells malfunction in microgravity. They will also work with experts in the Jacobs School of Engineering at UC San Diego and Space Tango to build special microscopes and bioreactors that fit the ISS lab space and transmit images to Earth in near real-time.
If we can find early predictors of cancer progression on the ISS, we are ideally positioned to rapidly translate them into clinical trials in our Sanford Stem Cell Clinical Center back on Earth, Jamieson said.
Brain stem cell regeneration and repair, led by Alysson R. Muotri, PhD, professor of pediatrics and cellular and molecular medicine and director of the Stem Cell Program at UC San Diego School of Medicine and a member of the Sanford Consortium for Regenerative Medicine, and Erik Viirre, MD, PhD, professor of neurosciences and director of the Arthur C. Clarke Center for Human Imagination.
Co-Principal Investigator Alysson Muotri, PhD, holding brain organoids in a laboratory dish at the Sanford Consortium for Regenerative Medicine. Credit: Erik Jepsen/UC San Diego Publications.
This project will build on a previous proof-of concept flight that sent a payload of stem cell-derived human brain organoids to the ISS in 2019. Brain organoids also called mini-brains are 3D cellular models that represent aspects of the human brain in the laboratory. Brain organoids help researchers track human development, unravel the molecular events that lead to disease and test new treatments.
Since their last trip to space, the UC San Diego team has significantly advanced the brain organoids levels of neural network activity electrical impulses that can be recorded by multi-electrode arrays.
All the research models we currently use to study aging in a laboratory dish rely on artificial things, such as increasing oxidative stress or manipulating genes associated with aging, said Muotri, who is also co-principal investigator on the award. Here, were taking a different approach to speed up the aging process and study how it plays a role in developmental diseases and neurodegenerative conditions such as Alzheimers.
Liver cell injury and repair, led by David A. Brenner, MD, vice chancellor of health sciences at UC San Diego, and Tatiana Kisseleva, MD, PhD, associate professor of surgery at UC San Diego School of Medicine.
On Earth, Brenner and Kisseleva study ailments of the liver, such as liver fibrosis and steatohepatitis, a type of fatty liver disease. Liver diseases can be caused by alcohol use, obesity, viral infection and a number of other factors. They are interested in determining the impact microgravity may have on liver function, which could provide insights into diseases on Earth, as well as potential effects during space travel. In the future, the team may test therapies for steatohepatitis in the new ISS lab, where microgravity mimics aging and can lead to liver cell injury.
These insights may allow us to develop new ways to stop the progression of liver disease and cirrhosis conditions that affect approximately 4.5 million people in the U.S., Brenner said.
Once the ISS stem cell lab is validated, the team said it will replicate the Earth-based Sanford Consortium for Regenerative Medicine, a collaboratory in La Jolla, Calif. that brings together experts from five research institutions: UC San Diego, Scripps Research, Salk Institute for Biological Studies, Sanford Burnham Prebys Medical Discovery Institute and La Jolla Institute for Immunology.
Plans for the new ISS research lab and initial projects were made possible by an award from the NASA Research Opportunities for ISS Utilization. The UC San Diego team also credits the support of philanthropists T. Denny Sanford, Rebecca Moores Foundation and the Koman Family Foundation; their leadership, Pradeep Khosla, chancellor of UC San Diego, Patty Maysent, CEO of UC San Diego Health, Scott Lippman, MD, director of Moores Cancer Center at UC San Diego Health; and previous research and infrastructure funding from the National Institutes of Health, California Institute for Regenerative Medicine (CIRM), Pedal the Cause, and Leukemia & Lymphoma Society.
Disclosures: Muotri is a co-founder and has equity interest in TISMOO, a company dedicated to genetic analysis and brain organoid modeling, focusing on therapeutic applications customized for autism spectrum disorder and other neurological disorders with genetic origins. The terms of this arrangement have been reviewed and approved by the University of California San Diego in accordance with its conflict of interest policies.
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UC San Diego to Advance Stem Cell Therapies in New Space Station Lab - UC San Diego Health
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