(IMAGE) Tokyo Medical and Dental University Caption We designed and synthesized both a conventional ASO and a ASO modified with BNAP-AEO (BNAP-AEO ASO) (top row). The ASO with BNAP-AEO exhibited a higher binding affinity to the target RNA than the conventional ASO (middle left). Additionally, the BNAP-AEO administered into mice intrathecally showed lower neurotoxicity compared to the conventional ASO without BNAP-AEO with evaluation by toxicity score as well as assessment of spontaneous motor function (open field test), while maintaining the inhibitory effect on the target gene (middle right). In other words, BNAP-AEO demonstrates high binding affinity, efficacy, and safety simultaneously. Credit Department of Neurology and Neurological Science, TMDU Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.