Nanorattles Shake Up New Possibilities for Disease Detection
New nanoparticle shape can greatly enhance signals from multiple separate biomarkers at once, accurately detecting head and neck cancers without biopsies to improve global health
Researchers at Duke University have developed a unique type of nanoparticle called a “nanorattle” that greatly enhances light emitted from within its outer shell.
Loaded with light scattering dyes called Raman reporters commonly used to detect biomarkers of disease in organic samples, the approach can amplify and detect signals from separate types of nanoprobes without needing an expensive machine or medical professional to read the results.
In a small proof-of-concept study, the nanorattles accurately identified head and neck cancers through an AI-enabled point-of-care device that could revolutionize how these cancers and other diseases are detected in low-resource areas to improve global health.
The results appeared online September 2 in the Journal of Raman Spectroscopy.
“The concept of trapping Raman reporters in these so-called nanorattles has been done before, but most platforms had difficulty controlling the interior dimensions,” said Tuan Vo-Dinh, the R. Eugene and Susie E. Goodson Distinguished Professor of Biomedical Engineering and professor of chemistry at Duke.
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(originally posted on Sept. 13, 2022)
CIRCLE PHOTO (TOP): Gold nanostars (white spots) preferentially accumulate within a tumor (left) and are sparse in normal tissue (right).