Catalytic and Gating Nanoreactors: Cu(I)/Cu(II)-MOF@HMS for Size-Selective DNA-Templated Click Ligation Chain Reaction and Detection of Nucleic Acids.

Key Points

• This research aims to improve the detection of nucleic acids using size-selective nanoreactors that differentiate between similar sequences.
• Developed 4 nm nanoreactors based on Cu(I)/Cu(II)-MOF@HMS for DNA-templated reactions.
• Evaluated amplification efficiency and detection limits for various nucleic acid lengths.
• Tested specificity for miRNA-21 against pre-miRNA-21 using hydrodynamic diameter mismatch.
• Achieved amplification efficiency of 69% for 20 nt templates with a detection limit of 57.5 aM.
• Demonstrated over 20-fold discrimination of miRNA-21 vs. its longer precursor.
• Successfully suppressed signals from 30 to 50 nt analogues.