Eat Sunshine? Scientists Just Made Animal Cells Photosynthesize!

Imagine if animal cells could power themselves with sunlight, just like plants. Thanks to a team of Japanese scientists, this sci-fi idea is now a reality. Led by Professor Sachihiro Matsunaga at the University of Tokyo, researchers have engineered hamster cells to photosynthesize by inserting chloroplasts—structures usually exclusive to plants and algae—directly into the cells. For the first time, animal cells are capable of using sunlight to create energy! 

Photosynthesis is a process usually reserved for plants, algae, and a few bacteria. These organisms convert sunlight, water, and carbon dioxide into energy. Animal cells, however, lack the chloroplasts needed for this magical transformation. By implanting chloroplasts from algae, Professor Matsunaga’s team was able to create “solar-powered” animal cells. For about two days, these cells could produce energy and oxygen from light—a breakthrough that has scientists thrilled.

So, why is this big news? Imagine lab-grown tissues or artificial organs that generate their own energy. This development could eventually lead to tissues that survive longer, heal faster, or even thrive in low-oxygen environments, like outer space. The possibilities are as bright as the sunlight itself.

Interestingly, nature has one rare, photosynthesizing animal: the spotted salamander, which forms a unique relationship with algae that enables it to capture sunlight. Inspired by this natural partnership, the researchers wondered if other animal cells could adapt too—and now, they’ve proven it’s possible.

With curiosity and hope, scientists and innovators are looking to the future. Could we soon see medical advancements or even eco-friendly technologies based on this incredible discovery? If solar-powered cells are just the beginning, who knows what other wonders lie ahead? The future, it seems, is brighter than ever.