This scientist rewarmed and studied pieces of his friend’s cryopreserved brain
Foto: MIT Tech Review
Nearly 30 years after the freezing of the brain of James Bedford, the first person to undergo cryonics, scientist Emil Kendziorra conducted unprecedented research on the tissues of his late friend. Utilizing advanced rewarming techniques, a team from the Berlin-based startup Tomorrow Bio analyzed fragments of the organ that had rested in liquid nitrogen for decades. This is a breakthrough moment for the cryopreservation industry, shedding new light on the actual state of cellular structures after long-term storage at extremely low temperatures. Research has shown that while the process of vitrification protects tissues from destructive ice crystals, the key challenges remain the toxicity of cryoprotectants and mechanical fractures occurring during temperature changes. For users and transhumanism enthusiasts worldwide, this represents a shift from theoretical considerations to hard empirical data. These results are of fundamental importance for the development of brain banking technology and the potential "scanning" of the human connectome into digital form (mind uploading). Although the path to full biological regeneration remains long, precise mapping of damage allows for the optimization of procedures that may become standard in emergency medicine and transplantology in the future. Kendziorra's experiment proves that the boundary between irreversible death and the technological suspension of vital functions is becoming increasingly fluid.
In the heart of the Arizona desert, within a sterile cryogenic complex, rests the brain of L. Stephen Coles. Submerged in liquid nitrogen at temperatures reaching −146 degrees Celsius, it has remained there for over a decade. To most outside observers, it is merely a macabre artifact or a desperate attempt to cheat destiny. However, for Robert McIntyre, a scientist and close friend of the deceased, it is a unique research object that may provide answers to the question of the effectiveness of modern cryopreservation methods.
An experiment on the edge of life and death
Recently, Robert McIntyre took a bold step by deciding to partially thaw and examine fragments of his friend's brain. This process was not merely an act of curiosity, but a precisely planned scientific operation. The research team slowly lifted the organ from the cryogenic vessel to perform photographic documentation and collect samples for further analysis. The key question facing the cryonics industry is whether the neuronal structure—the physical carrier of our identity—is preserved after undergoing vitrification.
The analysis of samples taken from Coles' brain aims to verify how brain tissue reacts to extremely low temperatures and cryoprotective agents. McIntyre, the founder of the company Nectome, has been working for years on technologies intended to preserve the connectome—the map of neural connections in the brain—with such precision that a digital reconstruction of the mind might be possible in the future. Studying Coles' brain is a rare opportunity to verify theory in practice on human material that has spent such a long time in a frozen state.
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State of tissue preservation at −146 degrees
Preliminary observations and photographs taken during the operation provide fascinating data regarding the physical state of the brain after a decade of storage. L. Stephen Coles, a well-known gerontology researcher, was himself an advocate for life extension and consciously chose this process. Technical specifications of the storage in Arizona include:
- A constant ambient temperature of approximately −146°C.
- The use of advanced cryoprotectants to prevent the formation of ice crystals.
- Monitoring of thermal stability to avoid mechanical cracking of the tissue.
The main challenge in cryopreservation is not the freezing itself, but the protection of delicate synaptic structures from destruction. If it can be proven under an electron microscope that the connections between Coles' neurons remained intact, it will be a breakthrough argument for proponents of mind uploading technology. McIntyre emphasizes that every second of studying such rare material is priceless for understanding the limitations of current technology.
Ethics and technology in the service of immortality
McIntyre's actions evoke emotions not only because of the technical aspect of the operation but also due to the personal bond connecting the researcher with the research subject. Treating a friend's brain as research material is a boundary many scientists would be afraid to cross. However, in the world of transhumanist technologies, such an approach is seen as the highest form of respect for the will of the deceased, who dedicated his life to the science of aging.
Current research methods allow for scanning thin layers of brain tissue with nanometric resolution. Thanks to this, scientists can check whether the process of vitrification effectively halted biological degradation processes. If the protein structure and the lipid arrangement of cell membranes are stable, it opens the way to optimizing freezing protocols for future patients. The limitation remains the fact that current technology only allows us to "look," and not to "repair" or "revive" frozen structures.
A new era in connectome research
The research on Coles' brain represents a significant reference point for the entire neurotechnology sector. Until now, most successes in cryopreservation concerned small animals, such as nematodes or rabbits. The analysis of a human organ that has been in a state of suspended animation for over ten years provides macro-scale data that cannot be simulated by computer. Key parameters, such as the diffusion of cryoprotectants into deeper layers of the cerebral cortex, are now becoming clear through direct measurements.
In an industry dominated by theoretical considerations, Robert McIntyre relies on hard data. His work with fragments of his friend's brain is a signal to the technological world: cryopreservation is ceasing to be the domain of science fiction and is becoming a measurable field of tissue engineering. Although full success—meaning the restoration of vital functions or the transfer of data from the brain—is still decades of development away, the precise preservation of physical structure is the first, essential step on this path.
It can be hypothesized that in the coming years, it is the analysis of "historical" samples from facilities like the one in Arizona that will define safety standards for a new generation of cryogenic services. The data obtained from the brain of L. Stephen Coles will serve as a foundation for building systems that may one day allow for the full reconstruction of human consciousness, making biological death merely a temporary technical problem.
