Fluorescent RNA Sensor Enhances Water Safety with Increased Sensitivity
A team led by Julius Lucks at Northwestern University has developed an advanced version of the ROSALIND platform, a fluorescent RNA sensor designed to detect water contaminants. This platform, named after chemist Rosalind Franklin, utilizes reverse-engineered microbial sensing molecules to identify chemical threats in water. The latest iteration of ROSALIND is ten times more sensitive than its predecessor, capable of detecting nucleic acid targets like DNA fragments and RNA, in addition to small molecules and metals. This enhancement is achieved through a signal amplification circuit that recycles detection signals, amplifying weak readings. The platform is already being used in field trials, including testing for lead in Chicago's tap water and measuring fluoride levels in rural Kenya. 
