Scientists Discover a Fascinating Third State of Life Beyond Death
We traditionally understand life and death as clear-cut endpoints: we're born, we live, and we die. However, recent research challenges this perception by unveiling a mysterious "third state" where cells of dead organisms persist and take on new functions. This ground-breaking discovery fundamentally reshapes our understanding of life and death.
Biologists Peter Noble from the University of Washington and Alex Pozhitkov from the City of Hope cancer center in California, together with their coauthors, explored this third state in a review published in the journal Physiology. Their research on xenobots and anthrobots—new life forms emerging from the cells of dead organisms—revealed an astonishing capacity for these cells to continue functioning after the host organism's demise.
The review underscores the versatility of cellular systems, suggesting that cells can evolve beyond their anticipated roles. The researchers pinpointed specific instances where skin cells from deceased frog embryos rearranged themselves into multicellular entities known as xenobots. These xenobots performed functions different from their original ones, such as using hair-like structures called cilia to navigate rather than move mucus.
Likewise, human lung cells have demonstrated a capacity to form anthrobots that assemble themselves, move around, and even repair neighboring neurons. The ability of these cells to replicate and adopt novel functions raises profound questions about the very definitions of life and death.
One leading hypothesis posits that specialized channels and pumps in cell membranes act like intricate electrical circuits. These circuits generate signals enabling cells to communicate and carry out specific tasks, thereby reorganizing into functional multicellular organisms even after the organism itself has died.
The medical implications of the "third state" are immense. If scientists can harness and engineer these cells to deliver medications, it could revolutionize treatments by providing drugs that bypass the immune system. Such cells might also address diseases like atherosclerosis and cystic fibrosis more effectively.
Preliminary findings from Noble and Pozhitkov originated back in 2009 and included studies on zebrafish and mice, revealing increased abundance of mRNA transcripts days after death. This and subsequent confirmations by other institutions have strengthened the case for this third state.
While the cells in this third state do not live indefinitely—usually perishing within four to six weeks—their brief continuation offers vast potential for regenerative medicine. Research in this arena promises to transform our biological and medical knowledge.
In sum, life's transition phases are more complex than the dichotomy of existence and termination. The ongoing research into this third state, facilitated by pioneering efforts from scientists like Noble and Pozhitkov, reveals groundbreaking insights into the nature and limits of life.
Earlier, SSP wrote analysis of ancient scandinavian watercraft.