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News
Chemotherapy doesn't just target cancer cells — it also leaves lasting DNA damage in healthy tissues of children. A new study using ultrasensitive DNA sequencing found that platinum-based chemo causes healthy cells to age genetically by decades in a short period, and revealed a previously unknown damage pattern unique to the liver. These findings may help explain why childhood cancer survivors face higher risks of new cancers and liver disease later in life.
Chemotherapy saves countless young lives, but a landmark new study published in Science reveals it also leaves a lasting genetic mark on healthy cells. Using an ultrasensitive DNA sequencing technique called NanoSeq, researchers from the University of Gothenburg and the Wellcome Sanger Institute mapped DNA changes in healthy tissues from children treated with platinum-based chemotherapy — one of the most widely used classes of cancer drugs.
The findings are striking: healthy cells in treated children showed the same amount of DNA damage typically seen in middle-aged adults, meaning chemo effectively fast-forwards cellular aging. Researchers also discovered a previously unknown pattern of DNA damage unique to the liver — believed to result from how the body breaks down platinum-based drugs — which could help explain the elevated risk of liver disease in survivors.
Key Takeaways:
Why it matters: Childhood cancer survivors face a well-documented but poorly understood risk of long-term health problems. This research offers the first biological roadmap for why — and opens the door to developing therapies that protect healthy tissue during treatment, potentially making future cancer care safer for kids.
