Scientists in Singapore have developed qChIP-MS, a new method that maps entire networks of proteins on DNA — not just one at a time. The technique was validated using telomeres and could shed light on how chromatin regulation goes wrong in cancer and aging. Researchers are already using it to study how certain cancers keep dividing by hijacking telomere maintenance.
Scientists at the Cancer Science Institute of Singapore (CSI Singapore) at NUS have developed a new research tool called qChIP-MS that gives a much fuller picture of how DNA is organized and controlled inside cells. Published in Nature Communications, the method combines chromatin immunoprecipitation and mass spectrometry into a single workflow — allowing researchers to identify and measure entire networks of proteins working together at specific locations on the genome, rather than studying one protein at a time.
The team validated qChIP-MS using telomeres — the protective caps at chromosome ends tied to aging and cancer — successfully identifying known telomere-associated proteins across different biological sample types. They also built in strategies to reduce false-positive results, a persistent challenge in chromatin research.
Key Takeaways:
Why it matters: Understanding how proteins interact with chromatin in diseased cells could accelerate discoveries in cancer biology and genome regulation — and potentially point toward new therapeutic targets down the road.
