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Photosynthesis in Mammalian Cells for Disease Treatment: 2026 Breakthrough

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🗂️ Biology & Life Sciences · View mindmap

Photosynthesis in Mammalian Cells for Disease Treatment: 2026 Breakthrough

Clip title: Using Photosynthesis to Treat Disease: A 2026 Breakthrough Author / channel: Anton Petrov URL: https://www.youtube.com/watch?v=dYiFNK2rK94

Summary

This video discusses groundbreaking research aimed at introducing photosynthesis into animal and human cells, bridging the traditionally separate kingdoms of animals and plants. The concept is not entirely new; the speaker first highlights the Elysia chlorotica sea slug, a natural example of “kleptoplasty,” where the slug consumes algae and retains their chloroplasts, using them for photosynthesis to produce energy and survive periods of starvation. This phenomenon, which was confirmed to provide more than just backup food storage in 2021, has long fascinated scientists with the idea of harnessing solar power in animals. However, applying this to complex mammalian cells presents significant challenges due to their sophisticated immune systems and inherent hostility towards foreign organelles, typically destroying them within 48 hours.

Recent advancements in synthetic biology are bringing this fascinating idea closer to reality. A significant 2024 study from the University of Tokyo successfully incorporated photosynthetically active chloroplasts from the robust red alga Cyanidioschyzon merolae into cultured Chinese hamster ovary cells. These chloroplasts not only maintained their electron transport activity but also survived for at least two days within the mammalian cells, localizing close to the nucleus. Surprisingly, the animal cells showed an increased growth rate, suggesting they might have utilized the carbon products generated by these chloroplasts, marking the first direct evidence of functional chloroplast survival in mammalian cells.

Building on this, a 2026 study published in “Cell” further explored the therapeutic potential of photosynthesis in mammalian systems. Researchers developed a “photosynthetic medicine” called LEAF (Light-reaction Enriched thylAkoid NADPH-Foundry) by isolating thylakoid grana from spinach leaves. This nanoscopic delivery system was then injected into the eyes of mice suffering from dry eye disease, a condition characterized by chronic inflammation and oxidative stress due to insufficient NADPH. After just five days, the photosynthetic eye drops proved as effective as commercial medications in reducing corneal damage and restoring tear production, by leveraging ambient light to produce vital NADPH and ATP directly within the eye cells.

While this research is in its very early stages, the implications are vast. This “photosynthetic therapy” could potentially be used to treat various disorders where cells suffer from oxidative stress or oxygen deprivation, such as certain eye conditions, arthritis (by reducing inflammation in joints), or even in medical emergencies requiring rapid oxygen delivery to organs like the brain or heart. However, significant challenges remain, including enhancing the longevity and functionality of foreign organelles within mammalian cells, overcoming immune responses, and addressing the dependency of chloroplasts on the host cell’s nucleus for protein synthesis. Despite these hurdles, this represents a crucial step from observational biology to synthetic bioengineering, paving the way for revolutionary medical solutions that could eventually benefit billions of people, though practical human applications are likely decades away.

Video Description & Links

Description

Hello and welcome! My name is Anton and in this video, we will talk about the use of photosynthesis inside animal cells Links: https://www.jstage.jst.go.jp/article/pjab/100/9/100_pjab.100.035/_pdf/-char/en https://www.sciencedirect.com/science/article/abs/pii/S0092867426004691 #biotechnology photosynthesis cellularbiology

0:00 Can animals harness the sun? 1:05 Photosynthetic sea slug 2:45 Why animal cells don’t accept chloroplasts 3:45 New study inserted chloroplasts into hamster’s cells 6:10 So why even do this? Photosynthetic therapy 9:50 Conclusions and where we are with this right now

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Credit: Mark Garlick www.markgarlick.com Karen N. Pelletreau et al. - http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0097477 millerse - http://opisthobranchia.myspecies.info/gallery?f[0]=im_field_cc_licence%3A2 CC BY 3.0 Smithsonian Environmental Research Center CC BY 2.0 https://commons.wikimedia.org/wiki/File:Elysia_chlorotica_0176_%2835425743063%29.jpg NEON_ja CC BY SA 3.0 https://en.wikipedia.org/wiki/Cyanidioschyzon#/media/File:Cyanidioschyzon_merolae_10D.jpg

Licenses used: https://creativecommons.org/licenses/by/4.0/ and relevant Creative Commons licenses

Tags

anton petrov, science, physics, astrophysics, astronomy, universe, whatdamath, what da math, technology, space engine, anton, petrov, biology

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