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Custom 2-tailed miRNA assays

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Custom Two-tailed RT-qPCR microRNA assays

Our new TATAA miRNA 2-Tailed RT-qPCR assays show exceeding performance compared to other techniques as recently published in NAR (see Product Documents).

The challenge detecting small microRNAs is that two conventional PCR primers do not fit the target as their combined length is almost twice the length of the microRNA. Older techniques have solved this by extending the microRNA using eg., a hairpin primer, adding a poly A-tail, or adding a fragment by ligation. This, however, compromises the assay sensitivity and specificity, as only one of the PCR primers sense the actual microRNA sequence; the other senses the added extension. Further, these methods fail to detect microRNAs modified in the 3’-end as it interferes with the extension process.

TATAA miRNA 2-Tailed RT-qPCR assays offers a superior solution. Instead of using a single binding probe, Two-tailed PCR uses two hemiprobes, which bind to different stretches of the microRNA, that are connected by a folded tether. While each hemiprobe is too short to bind the microRNA, when both hemiprobes are complementary they bind cooperatively.

  • Binding is exceeding specific, as a mismatch is much more profound in a short hemiprobe
  • The cDNA formed can then be PCR amplified using two sequence specific primers
  • SYBR as well as hydrolysis probes can be used for detection
  • 1-tube color multiplexing is possible as well as high degree two-tube multiplexing of the RT followed by singleplex qPCR

 

Two-tailed RT-qPCR assay is designed for microRNA target specified by client. The assay is validated on RT and qPCR level on synthetic microRNA. Report includes standard curve and NTC control.

To place an order download the order form (From Product Documents), fill it in and mail to: order@tataa.com

(TATAA)

Specifications

Partno: Custom design of new assays

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