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News
MIT researchers have developed a noninvasive method to detect senescent — or "zombie" — cells, which stop dividing but don't die and can drive age-related diseases. Using Raman microscopy combined with spatial RNA sequencing, the team created unique biochemical "barcodes" to identify these cells. The findings, published in Nature Aging, could pave the way for new diagnostic tools and therapies targeting aging-related conditions.
MIT researchers have developed a new window into cellular aging — and it doesn't require destroying the cells to do it. Their method uses Raman microscopy, a nondestructive light-based technique, combined with spatial RNA sequencing to identify senescent ("zombie") cells — cells that stop dividing but refuse to die. These cells accumulate with age and are linked to conditions like cancer, osteoarthritis, type 2 diabetes, and chronic inflammation.
By analyzing skin and lung tissue from young and old mice, the team identified unique biochemical "barcodes" — combinations of Raman spectral peaks tied to specific lipids, proteins, and molecules — that reliably flag senescent cells. One standout finding: older cells showed a dramatic increase in lipid synthesis and accumulation, though the full physiological impact is still under investigation. The research is published in Nature Aging.
Key Takeaways:
Why it matters: Senescent cells play a role in dozens of age-related diseases. A noninvasive way to detect them in living tissue could transform how we diagnose and treat conditions ranging from chronic inflammation to cancer — and may one day be deployed directly inside the body.
