ArticleJournal of pharmaceutical analysis2026
Label-free detection of microRNA by polymerization and isomerization cyclic amplification coupled with G/Hemin DNAzyme.
Article in Journal of pharmaceutical analysis, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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8 authors.
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Abstract
A label-free detection technique for microRNA (miRNA) was developed based on target replacement cycling, polymerization and isomerization cyclic amplification (PICA), and G/Hemin DNAzyme signal output. The designed hairpin probe undergoes cyclic alternation of polymerization and isomerization catalyzed by Bst DNA polymerase, enabling target replacement cycling and continuous self-extension of single-stranded DNA (ssDNA) strands. This process generates abundant G-quadruplex sequences that bind to Hemin, achieving label-free detection of miRNA through catalytic reactions. Its key advantages include a specific primer self-extension mechanism that avoids spurious amplification, one step isothermal design simplifies workflow and enhances system robustness, adapting to diverse detection scenarios, and label-free detection strategy that substantially reduces cost. Therefore, it is poised to become a reliable tool for clinical miRNA analysis, offering potential guidance for the early diagnosis, treatment, and prognosis of tumor biomarkers.
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