偶氮苯修饰DNA的组装行为及主客体作用介导的形貌调控严文俊高瑾瑜张雄志赵智勇*(武汉科技大学化学与化工学院武汉430081)*联系人,赵智勇女,博士,副教授,主要从事有机化学、核酸组装及相关化学生物学研究。E-mail:zhaozhiyong@wust.edu.cn国家自然科学基金项目(21604066)和湖北省大学生创新创业训练计划项目(S202010488013,S202010488004)资助2022-08-22收稿,2022-09-28接受摘要智能型DNA纳米材料,由于其具有灵敏的外界刺激响应性,是纳米技术和生物医学应用中一类重要的功能纳米材料。本文研究的具有光响应性质的偶氮苯共价修饰DNA的两亲分子在水相中可组装成直径为28.8nm的球形胶束,光刺激或者β-环糊精与偶氮苯的主客体识别的调控均可实现组装解离,进一步通过荧光包裹实验和金纳米颗粒负载实验验证了球形胶束的组装机制,为其在药物负载、靶向识别等生物医学领域提供了潜在应用。关键词偶氮苯-DNA两亲分子自组装主客体作用形貌调控Self-assemblyofAzobenzeneModifiedDNAAmphiphilesandMorphologyRegulationMediatedbyHost-GuestInteractionYanWenjun,GaoJinyu,ZhangXiongzhi,ZhaoZhiyong*(SchoolofChemistryandChemicalEngineering,WuhanUniversityofScienceandTechnology,Wuhan,430081)AbstractSmartDNAnanomaterialsareimportantfunctionalnanomaterialsinnanotechnologyandbiomedicalapplicationsduetotheirsensitiveresponsetoexternalstimuli.Inthispaper,weinvestigatethatamphiphilicmoleculeswithphotoresponsiveazobenzenecovalentlymodifiedDNAcanself-assembleintosphericalmicelleswithadiameterof28.8nmintheaqueoussolution,andthedissociationofassemblymorphologycanbeachievedundertheregulationoflightstimulationorthehost-guestinteractionbetweenβ-cyclodextrinandazobenzene.Theself-assemblymechanismofsphericalmicelleswasfurtherverifiedbyfluorescenceencapsulationexperimentandgoldnanoparticleloadingexperiment,whichprovidesthepotentialapplicationsinbiomedicalfieldssuchasdrugloadingandtargetedrecognition.KeywordsAzobenzene-DNAamphiphiles,Self-assembly,Host-guestinteraction,Morphologicalcontrol智能型DNA纳米材料,由于其具有灵敏的外界刺激响应性,是纳米技术和生物医学应用中一类重要的功能纳米材料[1~4]。其通常的组装基元包括纯DNA序列和DNA-有机分子杂化体。...