A breast cancer diagnosis in 2011 changed the life and career path of Jessica Winter. “It was a really defining moment in my career,” said Winter, PhD, an Ohio State professor of engineering, and a member of the Ohio State Cancer Engineering Center. “I could have kept doing research and publishing papers … but now I really wanted to do translational work and take something from the lab to patients.” Winter is a leader in the growing field of utilizing nanotechnology for cancer science and treatment. “There are three areas where it can be applied – imaging, biosensing and drug delivery,” she said. Winter and her lab, and her collaborators at the James and the Ohio State Cancer Engineering Center are involved in all three of these areas. Nanotechnology has been used since the 1990s to deliver chemotherapy drugs. “Nanotechnology is defined as something between the size of one and 100 nanometers,” Winter said. “You can fit five million nanoparticles that are five nanometers in diameter inside a cell.” In her lab, Winter has developed what she calls “quantum dots” to improve the delivery of drugs to cancer patients. Another area of her research involves biosensing. “The COVID test is a biosensor and some of the earliest biosensors were home-pregnancy tests,” Winter explained. Winter and collaborators at the James are also working on a nanotechnology biosensing method to analyze solid tumors. “We came up with a method of erasable labelling,” she said of the method in which several different colors, or layers, of can be used to create a series of images. “We need better diagnostic tests to match the patient with the best therapy, this is personalized medicine,” Winter said. Her cancer diagnosis (she is in remission and doing well) continues to motivate Winter. “I love my job and what I do,” she said. “The idea that I can help people … and make real things for real people is very exciting.”