For years, gene editing has meant rewriting the genetic code itself, cutting and replacing strands of DNA to correct mutations. Now researchers are pursuing a different strategy: instead of altering the genes we’re born with, they want to change how those genes behave.
The approach, known as epigenetic editing, targets the chemical marks that accumulate on our DNA over a lifetime. These marks don’t change the underlying genetic sequence, but they act like switches, turning genes on or off in response to stress, diet, environmental exposures, and other life experiences. Scientists describe these accumulated changes as a kind of molecular memory of everything a person has lived through.
Unlike conventional gene editing, which permanently rewrites what scientists often call our biological “nature,” epigenetic editing focuses on “nurture”—the imprint left by our surroundings and choices. Researchers hope this could eventually allow doctors to reverse damage linked to chronic stress, aging, or disease without touching the genome itself.
The technique is still in early stages, and much remains unknown about how safely and precisely these molecular switches can be controlled in living patients. Still, scientists see it as a promising complement to traditional gene therapy, potentially opening new treatment paths for conditions rooted in how genes are expressed rather than in genetic mutations alone.
To learn more about how this emerging science works, read the full report from The New York Times.
Source: A Newer Kind of Gene Editing Promises to Edit ‘Nurture’ Over ‘Nature’ (rss.nytimes.com). English version produced with AI assistance.
Image: John Crawford (Photographer).