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miRNA Inhibitor
GenePharma miRNA inhibitors are chemically-modified and optimized nucleic acids designed to specifically target the microRNA (miRNA) molecules in cells. Endogenous microRNAs are small

Store at or below –20°C.
Do not store in a frost-free freezer.




Product Description:



A single-stranded RNA oligonucleotide designed for use in miRNA function research.







Product Inhibitors

Sanger miRNA Registry ID#:
For example: hsa-miR-1




Storage Conditions:



Store at or below –20°C. Do not store in a frost-free freezer. (Dried oligonucleotides are shipped at ambient temperature.)








General Information:



GenePharma miRNA Inhibitors are designed to inhibit the activity of endogenous miRNAs when introduced into cells. These RNA-based inhibitors are chemically modified to increase their stability.
GenePharma miRNA Inhibitors can be delivered to mammalian cells by chemical transfection or electroporation.

Handling Instructions:



RNA oligonucleotides are susceptible to degradation by exogenous ribonucleases introduced during handling. Wear gloves when handling this product. Use RNase-free reagents, tubes, and barrier pipette tips. Upon receipt, store in a non-frost-free freezer at or below –20°C (dried oligonucleotides are shipped at ambient temperature).
Resuspension Instructions
Briefly centrifuge the tube to ensure that the dried oligonucleotide is at the bottom of the tube. Resuspend the oligonucleotide at a convenient concentration. To minimize freeze-thaw cycles, we recommend preparing a concentrated stock, such as 20 μM, and then further diluting to a practical working stock concentration. (Resuspend 5 nmol of oligonucleotide in 250 μL of Nuclease-free Water to obtain a 20 μM solution.)







miRNA Inhibitor is designed for use in miRNA experiments and cell cultures to intervene miRNA-mediated gene silencing. For this application, a miRNA Inhibitor is introduced into cells that express the corresponding miRNA, and the expression of the endogenous target of the corresponding miRNA, or of a reporter construct containing the predicted target miRNA binding site, is measured.

Expression of Endogenous miRNA Targets
To analyze the effects that miRNAs have on an endogenous target, the miRNA Inhibitor can be transfected into cells to evaluate whether the endogenous mRNA target expression is reversed in protein level. 
Expression of miRNA Target Reporter Plasmid
Reporter plasmids, with a or several miRNA binding sites in the 3’ UTR of the reporter gene, are commonly used to to evaluate the direct interaction between miRNA-potential miRNA targets. When cotransfected with a reporter plasmid containing corresponding miRNA binding site, a miRNA Inhibitor can relieve the inhibition of gene expression caused by an endogenous miRNA. This type of experiment typically also includes a second reporter plasmid to normalize for transfection variation.

We recommend transfection with nontargeting miRNA inhibitor negative control as a baseline reference. Nontargeting miRNA inhibitor negative control should be used at the same concentration as experimental target miRNA inhibitor, because nucleic acid concentrations within cells can affect the activity and specificity of miRNAs.

Transfection Starting Points for Mammalian Cells 
As with other small nucleic acids, such as siRNAs and antisense oligonucleotides, the efficiency with which mammalian cells are transfected with miRNA inhibitors will vary according to cell type and the transfection reagent used. The optimal concentration used for transfections should be determined empirically.