AI Insight
Organic electrochemical transistors (OECTs) are a class of bioelectronic devices that have shown significant promise for detecting metabolites such as glucose, lactate, and dopamine in biological systems. This review article examines the transition of OECT-based biosensors from controlled in vitro laboratory settings to more complex in vivo applications, addressing key challenges related to device stability, biocompatibility, and signal fidelity in physiological environments. The authors analyze how material advances, particularly in mixed ionic-electronic conducting polymers, have enabled more sensitive and selective metabolite detection in real biological fluids and tissues.
Why it matters
Continuous, real-time monitoring of metabolites in living organisms has direct implications for managing conditions such as diabetes, metabolic disorders, and neurological diseases. Reliable in vivo OECT sensors could eventually enable closed-loop therapeutic systems that automatically adjust drug delivery based on live biochemical feedback.