Such photodynamic therapy works well for some types of skin cancer, which are easily affected by an external light source. Meanwhile, tumors of the lung or esophagus can be treated by inserting a thin probe with a laser at the end through the mouth into the chest. However, many other cancers, such as the kidneys, liver, and pancreas, are located too deep inside the body, so treatment with a light laser is not possible in this case.
In fact, the new implant is a plastic box with dozens of tiny light bulbs. The surface of the implant is coated with chemical proteins called polydopamines, substances that mussels use to adhere to wet stones in the sea. This “glue” allows you to attach the implant to any organ or tissue by simply making a small incision near the site of the tumor and placing it under the skin. Tiny light bulbs produce enough light to activate a cure for cancer when they are turned on with the remote control.
In tests conducted on mice, scientists placed a new device next to tumors in the internal organs and injected a photosensitive drug. A few hours later, the doctors turned on the implant and left it in place for ten days. It was found that tumors in mice were significantly reduced, and in some cases were completely eliminated.
According to scientists, the implant is able to provide effective assistance in treating cancer, but can only work on relatively shallow tumors located on the surface of organs and tissues, since the light used in photodynamic therapy penetrates tissue only to a depth of about 5 millimeters.