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2020-05-26Zeitschriftenartikel DOI: 10.18452/21878
Monitoring Dicer‐Mediated miRNA‐21 Maturation and Ago2 Loading by a Dual‐Colour FIT PNA Probe Set
Loibl, Natalia
Arenz, Christoph cc
Seitz, Oliver cc
Mathematisch-Naturwissenschaftliche Fakultät
The inhibition of micro RNA (miRNA) maturation by Dicer and loading matured miRNAs into the RNA‐induced silencing complex (RISC) is envisioned as a modality for treatment of cancer. Existing methods for evaluating maturation either focus on the conversion of modified precursors or detect mature miRNA. Whereas the former is not applicable to native pre‐miRNA, the latter approach underestimates maturation when both nonmatured and matured miRNA molecules are subject to cleavage. We present a set of two orthogonally labelled FIT PNA probes that distinguish between cleaved pre‐miRNA and the mature miRNA duplex. The probes allow Dicer‐mediated miR21 maturation to be monitored and Ago2‐mediated unwinding of the miR21 duplex to be assayed. A two‐channel fluorescence readout enables measurement in real‐time without the need for specialized instrumentation or further enzyme mediated amplification.
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DOI
10.18452/21878
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https://doi.org/10.18452/21878
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