mutation

Fragile X syndrome, an inherited cause of autism and intellectual disability, can have consequences even for carriers of the disorder who don’t have full-blown symptoms. Researchers at Washington University School of Medicine in St. Louis have identified a potential target for treatment for fragile X carriers.

DNA sequences from tumor cells can be used to direct the immune system to attack cancer, according to Robert Schreiber, PhD, the Alumni Professor of Pathology and Immunology at Washington University School of Medicine in St. Louis. The research, in mice, appears online Feb. 8 in Nature.

Scientists have shown that a specific virus can interact with a mutation in the host’s genes to trigger disease. The observation may help explain why many people with disease risk genes do not actually develop disease.

Researchers at Washington University in St. Louis have discovered through genetic analyses a metabolic pathway in bacteria comprised of just three genes, all known to be players in metabolism. This pathway was previously shown to be involved in synthesizing modified membrane lipids but data from Petra Levin’s lab indicate that it also has a major role in cell division. This is the first identification of a pathway responsible for regulating bacterial cell size.