#70–David Sinclair, PhD: How cellular reprogramming could slow our aging clock, & the latest on NAD
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Episode Highlights
Reprogramming
David Sinclair explains the groundbreaking potential of cellular reprogramming, a process that can reset a cell's age while maintaining its identity. This technique involves partially reprogramming cells to activate youthful gene patterns, which are often lost as we age. Sinclair's research shows that reprogramming can restore vision in mice by rejuvenating optic nerves, offering hope for treating age-related vision loss in humans 1 2.
What I mean by reprogramming is that we can use technology that we use now to generate stem cells, but to partially reprogram them so that they turn on the youthful pattern of genes that we once had that we know we lose.
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This approach could revolutionize regenerative medicine by potentially reversing age-related cellular damage 3.
Longevity
Sinclair envisions cellular reprogramming as a tool for extending lifespan and enhancing cellular health. He suggests that this technology could be applied to specific organs, such as the eyes or heart, to reverse aging effects and improve function 4. The potential for cellular immortality is discussed, with Sinclair noting that while genetic information may degrade over time, epigenetic information can be restored, offering a pathway to significantly extended lifespans 5.
Theoretically, this is as close as we've come to finding a way to actually live for thousands of years.
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This approach could lead to a future where age-related diseases are managed more effectively, improving quality of life 6.
Challenges
Implementing cellular reprogramming comes with significant challenges and risks, including the potential for cancer and difficulties in gene delivery. Sinclair highlights the technical hurdles in achieving widespread gene delivery across all cells, which is crucial for effective reprogramming 7. The cost and complexity of producing viral vectors for gene therapy are also significant barriers, with high demand driving up costs and extending timelines 8.
The current limit to technology right now is getting it into how many of the cells can actually get the virus.
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Despite these challenges, advancements in gene therapy continue to progress, offering hope for future applications 9.