Age-related macular degeneration is the most common cause of vision loss in adults over age 50, but there are few treatments available. Researchers are now developing promising stem cell therapies to treat the disease.
The macula is part of the eye’s retina, which is the light-sensitive tissue mostly composed of the eye’s visual cells: cone and rod photoreceptor cells. The retina also contains a layer called the retinal pigment epithelium (RPE), which has several important functions, including light absorption, cleaning up cellular waste, and keeping the other cells of the eye healthy.
The cells of the RPE also nourish and maintain the eye’s photoreceptor cells, which is why one of the most promising treatment strategies for age-related macular degeneration is to replace aging, degenerating RPE cells with new ones grown from human embryonic stem cells.
Scientists have proposed several methods for converting stem cells into RPE, but there is still a gap in our knowledge of how cells respond to these stimuli over time. For example, some protocols take a few months while others can take up to a year. And yet, scientists are not clear as to what exactly happens over that period of time.
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Can AI enable us to live forever? In A.rtificial I.mmortality, filmmaker Ann Shin sets out on a journey, exploring the latest AI and biotech with scientists and visionaries who foresee a ‘post-biological’ world where humans and AI merge. Will AI be the best, or the last thing we ever do?
David Sinclair shares another side of himself. Compassion for all people. He wants to make sure that longevity technologies are available for all people, not just for the super wealthy and their pets. He also speaks of emerging elderly populations who can live well up until death rather than suffering for so long, and instead start new careers and hobbies.
Researchers have restored vision in animal by resetting some of the thousands of chemical marks that accumulate on DNA as cells age. The work, by Dr David Sinclair Lab, published in Nature Dec 2020, suggests a new approach to reversing age-related decline, by reprogramming some cells to a ‘younger’ state in which they are better able to repair or replace damaged tissue.
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Samo Burja is a sociologist and the founder of Bismarck Analysis, a firm that analyzes institutions, from governments to companies. His research work focuses on the causes of societal decay and flourishing and he writes on history, epistemology and strategy.
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Liz mentions combinatorial gene therapy for aging near the end which is something you hear the likes of George Church mention they are working on.
Liz Parrish is the founder of @BioViva Science, a company dedicated to curing biological aging, a disease that is at the root cause of all other chronic diseases from heart disease to Alzheimer’s. Watch this video to understand how much more control we have over our lifespan and health!
The reluctance of many in the medical field to classify aging as a disease is causing significant roadblocks for those trying to find a solution.
Many people will swear to the life extending properties of coffee, be it saving them from keeling over from exhausting in the early hours of the morning or saving an annoying co-worker from the unbridled rage of someone who hasn’t yet acquired their caffeine fix. Yes, coffee is without a doubt one of the most powerful (and mostly metaphorical) lifesavers of the modern world. However, recent studies into the effects of drinking coffee on human lifespan have found that it might very well have a significant impact on health and longevity. A study of 170,000 people from the UK found that those who drank between two and four cups of coffee a day were 30% less likely to die from all causes compared to those who did not drink coffee at all.
Cells not replaced, but old cells that are still there are rejuvenated.
Dr David Sinclair explains the mechanism behind how to reprogramm the old cells rejuvenate to be young again. He also clarify the process is based on cell autonomous effect and does not involve or rely on any stem cells in this clip.
