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MIT News
A new sensor could enable earlier detection of bladder cancer
A new sensor could enable earlier detection of bladder cancer
Using a catheter coated with carbon nanotubes, researchers can detect biomarkers produced by cancer cells in the bladder.
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Anne Trafton<br>MIT News
Publication Date:
May 28, 2026
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MIT researchers have developed a new approach for monitoring bladder cancer patients that could allow recurring tumors to be detected much earlier. Using a catheter coated with specialized nanosensors, the team was able to detect extremely low levels of a protein produced by bladder cancer cells and pinpoint their location within tissue.
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Credit: Christine Daniloff, MIT; iStock
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Caption:
MIT researchers have developed a new approach for monitoring bladder cancer patients that could allow recurring tumors to be detected much earlier. Using a catheter coated with specialized nanosensors, the team was able to detect extremely low levels of a protein produced by bladder cancer cells and pinpoint their location within tissue.
Credits:
Credit: Christine Daniloff, MIT; iStock
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Every year, about 85,000 Americans are diagnosed with bladder cancer. While treatment is often successful, bladder cancer has one of the highest rates of recurrence of any cancer: Following treatment, about 50 percent of patients develop tumors again within the next five years. This makes it one of the most expensive cancers for society to treat.<br>MIT researchers have now developed a new way to regularly monitor those patients, which could enable regrowing tumors to be detected much earlier. Using a catheter coated with specialized nanosensors, the team showed that they could detect very low levels of a protein produced by bladder cancer cells and image their location in tissue.<br>The researchers calculate that this sensing approach is nearly 50,000 times more sensitive than urinalysis, an approach that has been used to monitor bladder cancer in patients. In an animal study, they showed that fluorescent signals produced by the sensors can be used to pinpoint the location of the tumor within the lining of the bladder, providing a chemical image.<br>“It’s like a camera for molecules instead of light,” says Michael Strano, the Carbon P. Dubbs Professor of Chemical Engineering at MIT. “If you have a billion nanosensors in an array, you can use them to make a chemical image that helps you locate their source.”<br>Strano is the senior author of the study, which appears today in the journal Nature Nanotechnology. Wonjun Yim, a Schmidt Science postdoc, and Hohyung Kang, an MIT postdoc, are the lead authors of the paper. Other authors include MIT graduate student Marco Machado, undergraduate student Maeve McGinnis, and postdoc Byungha Kang.<br>“Chemical images”
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The new detection approach is based on carbon nanotubes — hollow, nanometer-thick cylinders made of carbon that naturally fluoresce when exposed to laser light. Over the past 10 years, Strano’s lab has shown that these nanotubes can be customized to sense different molecules by coating them with “synthetic antibodies” — polymers that can be designed to interact with a specific target.<br>When the target analytes are present, their interaction with the synthetic antibodies causes the carbon...