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Carnegie Mellon scientists develop tool that uses MRI to visualize gene expression in living animals

ark areas that indicate the presence of the MRI reporter.

"Our technology is adaptable to monitor gene expression in many tissue types. You could link this MRI reporter gene to any other gene of interest, including therapeutic genes for diseases like cancer and arthritis, to detect where and when they are being expressed," Ahrens said.

Existing methods used to image gene expression have limitations, according to Ahrens. Some methods cannot be used in living subjects, fail to image cells deep inside the body or don't provide high-resolution images. Other approaches using MRI are not practical for a wide range of applications.

Ahrens and his colleagues constructed a gene carrier, or vector, that contained a gene for the MRI reporter. They used a widely studied vector called a replication-defective adenovirus that readily enters cells but doesn't reproduce itself. Ahrens injected the vector carrying the MRI reporter gene into brains of living mice and imaged the MRI reporter expression periodically for over a month in the same cohort of animals. The research showed no overt toxicity in the mouse brain from the MRI reporter.


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Source:Carnegie Mellon University


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