□ DGIST (President Kunwoo Lee) introduced {that a} analysis crew led by Professor Ji Gained Um of the Heart for Synapse Range and Specificity, Division of Mind Sciences, in collaboration with a analysis crew led by Professor Alice Ting at Stanford College,
has developed LATeNT, a novel optical management platform that makes use of gentle to dam sign transmission between neurons and subsequently restore regular signaling. The know-how is predicted to be extensively relevant to a broad vary of life science and medical analysis, together with elucidating the pathogenic mechanisms of mind issues and regulating insulin secretion.
□ Synapses are the first websites of connection by means of which neurons change data. Dysfunction of synaptic signaling could cause a variety of neuropsychiatric issues, together with anxiousness issues, despair, and autism spectrum dysfunction. Typical optogenetic applied sciences have largely been restricted to controlling {the electrical} exercise of neurons, with technical limitations in suppressing sign transmission at particular synapses for prolonged durations whereas permitting it to be totally restored afterward.
□ To beat these limitations, the analysis crew exactly designed LATeNT by fusing a light-oxygen-voltage (LOV) protein, which senses gentle, to tetanus neurotoxin that cleaves proteins concerned in neurotransmitter launch. LATeNT suppresses synaptic signaling by cleaving VAMP2, a protein important for neurotransmission, solely when uncovered to blue gentle of a selected wavelength. As soon as the sunshine stimulus is eliminated, it displays reversible properties with neurotransmission naturally returning to its authentic state inside roughly 24 hours.
□ Particularly, LATeNT induces a robust inhibitory impact on neurotransmission with solely weak blue-light stimulation. Making use of this in a mouse mannequin, the analysis crew transiently blocked signaling from particular inhibitory neurons within the hippocampus, which regulates reminiscence and emotion, and demonstrated that these neurons are instrumental within the neural circuits within the mind controlling anxiety-related habits. Furthermore, LATeNT exhibited stronger and extra sustained inhibitory results than typical optogenetic instruments.
□ Moreover, the analysis crew utilized LATeNT to the central nervous system, in addition to pancreatic β cells, succeeding in exactly regulating insulin secretion utilizing gentle. These findings recommend that LATeNT is a flexible platform with broad applicability throughout biotechnology transcending mind neural circuit analysis, together with analysis on metabolic and immune issues and the design of artificial biology-based genetic circuits.
□ “LATeNT is the primary molecular device that may spatiotemporally management the operate of particular synaptic proteins, considerably enhancing the precision of neural circuit analysis,” acknowledged Professor Ji Gained Um. “When mixed with AAV (adeno-associated virus) gene supply know-how or drug management techniques sooner or later, it could possibly be expanded right into a platform for customized precision remedy relevant not solely to mind and neurological issues but additionally to most cancers, metabolic issues, and immune issues.”
□ This analysis was collectively performed by the Heart for Synapse Range and Specificity at DGIST Division of Mind Sciences with Stanford College, supported by the Ministry of Science and ICT and the Nationwide Analysis Basis of Korea. Dr. Heegwang Roh and Dr. Dongwook Kim participated as co-first authors, and the findings had been printed on-line on July 31, 2026, in Nature Strategies, a prestigious journal within the area (prime 0.6% in its JCR class; affect issue: 28.3).
