Mirror-Image DNA Nanobox for Enhancing Environment Resistance of Nucleic Acid Probes.
ACS Nano
; 18(34): 23104-23116, 2024 Aug 27.
Article
en En
| MEDLINE
| ID: mdl-39146318
ABSTRACT
Degradation and interference of the nucleic acid probes in complex biological environments like cytoplasm or body fluid can cause obvious false-positive signals and inefficient bioregulation in biosensing and biomedicine. To solve this problem, here, we proposed a universal strategy, termed L-DNA assembly mirror-image box-based environment resistance (L-AMBER), to protect nucleic acid probes from degradation and maintain their responsive activity in complex biological environments. Strand displacement reaction (SDR), aptamer, or DNAzyme-based D-DNA probes were encapsulated into an L-DNA box by using an L-D-L block DNA carrier strand to construct different kinds of L-AMBER probes. We proved that the L-DNA box could effectively protect the encapsulated D-DNA probes by shielding the interference of complex biological environments and only allowing small target molecules to enter for recognition. Compared with the D-AMBER probes, the L-AMBER probes can realize DNase I-assisted amplification detection of biological samples, low false-positive bioimaging, and highly efficient miRNA silence in living cells. Therefore, L-AMBER provided a universal and effective strategy for enhancing the resistance to environmental interference of nucleic acid probes in biosensing and biomedicine applications.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
ADN
Límite:
Humans
Idioma:
En
Revista:
ACS Nano
Año:
2024
Tipo del documento:
Article
País de afiliación:
China
Pais de publicación:
Estados Unidos