Magnetic Biomarker Chip Spots Cancer Before It Develops
Up to 400 times more sensitive than existing ELISA-based methods
Detecting any of seven cancers in their earliest stages may be feasible through the use of a new biomarker chip that was recently unveiled by scientists from Stanford University’s Center for Magnetic Nanotechnology. To give their biomarker chip increased sensitivity over fluorescent detection methods, the scientists use magnetic technologies to accomplish detection.
Reporting in Proceedings of the National Academy of Sciences (PNAS), lead scientist Shan X. Wang, Ph.D., director of the center and professor of materials science and electrical engineering, says the chip is able to detect very low levels of seven cancers. The biodetection chip is to be marketed by Silicon Valley startup MagArray Inc., of Sunnyvale, California. It detects multiple proteins in blood or DNA strands using magnetic technology similar to how a computer reads a hard drive. Developers say this chip could also be used to diagnose cardiovascular disease and monitor cancer therapy.
