Nucleic acids are natural macromolecules with the ability to store and transmit information based on the strict base-pairing principle.Beyond the natural nucleic acid double helixes,various DNA/RNA nanostructures with...Nucleic acids are natural macromolecules with the ability to store and transmit information based on the strict base-pairing principle.Beyond the natural nucleic acid double helixes,various DNA/RNA nanostructures with customized geometries and functionalities have been fabricated.Featured with programmability and sequence-dependent responsiveness,DNA/RNA nanostructures have been employed for the rational design and construction of logic devices.When stimulated by internal molecular triggers and/or external stimuli,these logic gate devices can operate at nanoscale level in complex biological environments,performing logic operations and producing corresponding outputs.In this minireview,we summarize the recent advances of nucleic acid logic devices,which are responsive to various stimuli,including DNA/RNA strands,metal ions,small molecules,peptides,proteins,photo-irradiation,pH changes,and so forth.The applications of these devices in biosensing and biofunction regulation are also included.In the last part of the present study,we discuss the remaining challenges and perspectives of nucleic acid logic devices.展开更多
Life has evolved numerous elegant molecular machines that recognize biological signals and affect mechanical changes precisely to achieve specific and versatile biofunctions.Inspired by nature,synthetic molecular mach...Life has evolved numerous elegant molecular machines that recognize biological signals and affect mechanical changes precisely to achieve specific and versatile biofunctions.Inspired by nature,synthetic molecular machines could be designed rationally to realize nanomechanical operations and autonomous computing.We constructed logic-gated plasmonic nanodevices through coassembly of two gold nanorods(AuNRs)and computing elements on a tweezer-shaped DNA origami template.After recognition of various molecular inputs,such as DNA strands,glutathione,or adenosine,the geometry and plasmonic circular dichroism(CD)signals of the AuNR–origami nanodevices produced corresponding changes.Then we designed and characterized a set of modular Boolean logic-gated nanodevices(YES,NOT,AND,OR)and proceeded to construct a complicated 3-input circuit capable of performing Boolean OR-NOT-AND operations.Our plasmonic logic devices transduced external inputs into conformational changes and near-infrared(NIR)chiral outputs.This DNA-based self-assembly strategy holds great potential for applications in programmable optical modulators,molecular information processing,and bioanalysis.展开更多
基金National Natural Science Foundation of China,Grant/Award Numbers:22025201,21721002,32071389,21773044,51761145044K.C.Wong Education Foundation,Grant/Award Number:GJTD-2018-03+2 种基金Youth Innovation Promotion Association,CAS,Grant/Award Number:QYZDBSSW-SLH029Beijing Municipal Science&Technology Commission,Grant/Award Number:Z191100004819008National Basic Research Program of China,Grant/Award Numbers:2018YFA0208900,2016YFA0201601。
文摘Nucleic acids are natural macromolecules with the ability to store and transmit information based on the strict base-pairing principle.Beyond the natural nucleic acid double helixes,various DNA/RNA nanostructures with customized geometries and functionalities have been fabricated.Featured with programmability and sequence-dependent responsiveness,DNA/RNA nanostructures have been employed for the rational design and construction of logic devices.When stimulated by internal molecular triggers and/or external stimuli,these logic gate devices can operate at nanoscale level in complex biological environments,performing logic operations and producing corresponding outputs.In this minireview,we summarize the recent advances of nucleic acid logic devices,which are responsive to various stimuli,including DNA/RNA strands,metal ions,small molecules,peptides,proteins,photo-irradiation,pH changes,and so forth.The applications of these devices in biosensing and biofunction regulation are also included.In the last part of the present study,we discuss the remaining challenges and perspectives of nucleic acid logic devices.
基金the National Natural Science Foundation of China(31700871,21773044,51761145044,and 21721002)the National Basic Research Program of China(2016YFA0201601 and 2018YFA0208900)+4 种基金Beijing Municipal Science&Technology Commission(Z191100004819008)Key Research Program of Frontier Sciences,CAS,grant QYZDBSSW-SLH029the Strategic Priority Research Program of Chinese Academy of Sciences(XDB36000000)CAS Interdisciplinary Innovation TeamK.C.Wong Education Foundation(GJTD-2018-03).
文摘Life has evolved numerous elegant molecular machines that recognize biological signals and affect mechanical changes precisely to achieve specific and versatile biofunctions.Inspired by nature,synthetic molecular machines could be designed rationally to realize nanomechanical operations and autonomous computing.We constructed logic-gated plasmonic nanodevices through coassembly of two gold nanorods(AuNRs)and computing elements on a tweezer-shaped DNA origami template.After recognition of various molecular inputs,such as DNA strands,glutathione,or adenosine,the geometry and plasmonic circular dichroism(CD)signals of the AuNR–origami nanodevices produced corresponding changes.Then we designed and characterized a set of modular Boolean logic-gated nanodevices(YES,NOT,AND,OR)and proceeded to construct a complicated 3-input circuit capable of performing Boolean OR-NOT-AND operations.Our plasmonic logic devices transduced external inputs into conformational changes and near-infrared(NIR)chiral outputs.This DNA-based self-assembly strategy holds great potential for applications in programmable optical modulators,molecular information processing,and bioanalysis.
