U-M scientists observe deadly dance between nerves and cancer cells
Source: ns.umich.edu Author: Laura Bailey In certain types of cancer, nerves and cancer cells enter an often lethal and intricate waltz where cancer cells and nerves move toward one another and eventually engage in such a way that the cancer cells enter the nerves. The fluorescence image shows the interaction between the nerve (red) and cancer (green). Image credit: Nisha D’Silva The findings, appearing in Nature Communications, challenge conventional wisdom about perineural invasion, which holds that cancer cells are marauders that invade nerves through the path of least resistance, said Nisha D'Silva, principal investigator and professor at the University of Michigan School of Dentistry. D'Silva's lab discovered that perineural invasion is actually a much more intricately choreographed biochemical give-and-take between the nerves and the cancer cells. "Once head and neck cancer invades the nerves, it is one of the worst things that can happen," said D'Silva, who also has a joint appointment at the U-M Medical School Department of Pathology and is a member of the U-M Cancer Center's Head and Neck Oncology program. "It is highly correlated with poor patient survival, and there is no targeted treatment for it because it is not known why some tumors do this and some don't." Perineural invasion is seen most in head and neck, pancreatic, stomach and colon cancers, and causes severe pain or numbness, tumor spread and recurrence, and loss of function, among other complications. D'Silva's lab found that perineural invasion begins when the nerve releases a stimulus that triggers a [...]