Evolutionary FDX1-LIAS Reconstruction

Two seemingly unrelated fields meet in this hypothesis. The first is a newly discovered way cells can die: flood them with copper, and certain proteins clump together catastrophically — a process called cuproptosis. The proteins involved include an enzyme pair called FDX1 and LIAS, which normally help cells process energy. The second field studies the chemistry of hydrothermal vents — those volcanic cracks on the seafloor where superheated water loaded with copper and sulfur minerals gushes into the ocean. These vents are also thought to be among the cradles of early life on Earth. This hypothesis proposes that the FDX1-LIAS enzyme system is not a modern invention but an ancient inheritance — one that originally evolved to handle the copper-sulfur chemistry abundant at hydrothermal vents billions of years ago. In other words, the molecular machinery that can trigger a cell's death today may have first emerged as a survival tool in the primordial soup of a volcanic seafloor. The specific minerals and chemical gradients at these vents (things like chalcopyrite, a copper-iron sulfide mineral) may have literally templated the chemistry that cells later internalized. This is a bold bridge between geochemistry and cell biology. It suggests that to fully understand how and why copper kills cells, we should be looking at rocks and ancient oceans — not just modern biochemistry. It also implies the mechanism has been conserved across billions of years of evolution, which would make it both deeply fundamental and potentially very hard for cancer cells to evolve resistance against.

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