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Un neo che compare sulla pelle come sistema di allerta precoce per i quattro tipi di tumori più frequenti, quelli di prostata, polmone, colon e seno. La novità è stata sviluppata a Basilea e il suo inventore lo ha definito un "tatuaggio biomedico", prodotto grazie all'ingegneria genetica e impiantato sotto la cute.
La ricerca, pubblicata su Science Translational Medicine, è stata condotta dal Dipartimento dei biosistemi del Politecnico di Zurigo e prevede l'impianto di alcune cellule umane geneticamente modificate. Queste reagiscono alla presenza di livelli elevati di calcio nel sangue su lunghi periodi, tipici delle prime fasi dei tumori, provocando la comparsa del neo sulla pelle.
Il nuovo sistema, che non vedrà un'applicazione sull'uomo per una decina di anni, permette una prima allerta molto prima che il tumore possa essere riconosciuto con tecniche tradizionali, aumentando le probabilità di guarigione.
ATS/sf
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