Brain function after cryopreservation

Brain function after cryopreservation

Author: PNAS June 1, 2026 Duration: 10:33

Cryopreservation of brain tissue structures

Science Sessions are brief conversations with cutting-edge researchers, National Academy members, and policymakers as they discuss topics relevant to today's scientific community. Learn the behind-the-scenes story of work published in the Proceedings of the National Academy of Sciences (PNAS), plus a broad range of scientific news about discoveries that affect the world around us.

In this episode, Alexander German explains how to cryopreserve brain tissue through vitrification.

In this episode, we cover:
•[00:00] Introduction.
•[01:14] Physician-scientist Alexander German introduces the problems with traditional cryopreservation methods.
•[02:22] German explains why we cryopreserve tissue.
•[03:23] He tells about vitrification and why it's different than traditional cryopreservation.
•[04:13] German explains why osmotic stress is a concern in cryopreservation.
•[04:51] He talks about how the protocol minimizes damage to brain structures and tissues.
•[06:26] He recounts the tests they performed to evaluate the preservation and function of the vitrified tissues.
•[07:03] German describes the usefulness of vitrification.
•[08:48] He lists the caveats and limitations of the study.
•[10:03] Conclusion.

About Our Guest:

Alexander German 
Resident
Universität Erlangen-Nürnberg

View related content here: https://www.pnas.org/doi/full/10.1073/pnas.2516848123

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Tune into PNAS Science Sessions for a direct line to the people shaping modern science. Produced by PNAS, this podcast offers more than just summaries of published research; it’s where you hear the candid, often personal stories behind the headlines. Each episode features concise conversations with the researchers themselves-from emerging voices to established Academy members-alongside the policymakers whose decisions are informed by this work. You’ll get a genuine sense of the questions that drive these experts, the unexpected hurdles they face in their labs and field studies, and why their findings matter right now. The scope is deliberately wide, reflecting the interdisciplinary nature of science itself, covering discoveries that range from microscopic processes to planetary-scale phenomena. This isn't about dry lectures, but about capturing the human endeavor of investigation. For anyone curious about how science actually unfolds and wants to understand the context of breakthroughs as they happen, this podcast serves as an essential, engaging resource. It connects the dots between a published paper in a prestigious journal and the real-world implications that ripple out from it.
Author: Language: English Episodes: 100

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