miRNA cDNA first strand synthesis kit

Item No.: AG11716 / AG11717

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Price range: ¥980 through ¥2,980

Product Description

This is a kit for miRNA first-strand cDNA synthesis using the A-tail method. The first-strand cDNA of miRNA is synthesized by adding A-tail at the 3’ end of miRNA using Poly ( A ) Polymerase, and then reverse transcription using universal reverse transcription primers (Oligo (dT) primers with specific tags). miRNA RT Enzyme Mix contains A-tail and reverse transcriptase, and 2X miRNA RT Reaction Solution contains universal reverse transcription primers, which are optimized to synthesize miRNA first-strand cDNA from the same kit. In this product, miRNA RT Enzyme Mix contains A-tailed enzyme and reverse transcriptase, and 2X miRNA RT Reaction Solution contains universal reverse transcription primers, which are optimized to complete the A-tailed and reverse transcription reactions at the same time in the same reaction system, which simplifies the process of experimental operation and reduces the loss of reagents and experimental errors. This product is suitable for reverse transcription of miRNA samples containing Total RNA or small RNA.
This product contains the primer miRNA qPCR 3’primer for subsequent qPCR assays.

Product Advantages

① This kit combines the miRNA A tailing reaction and reverse transcription reaction into one, which is easy to use, reduces the experimental error and improves the detection rate of low abundance miRNAs.
② This kit can reverse transcribe samples containing miRNA such as Total RNA or small RNA.

Product Composition
individual parts making up a compound AG11716 AG11717
miRNA RT Enzyme Mix*1 12.5 μl 62.5 μl
2X miRNA RT Reaction Solution*2 50 μl 250 μl
miRNA qPCR 3’primer (10 μM)*3 250 μl 625 μl x 2 pcs
RNase free water 1 ml 1 ml

*1: Contains Poly(A) Polymerase,M-MLV RTase, RNase Inhibitor;
*2: Contains universal reverse transcription primers;
*3: For qPCR reaction, Tm value is 59°C.

Preservation and transportation
Storage temperature: -20℃
Transportation temperature: dry ice transportation or -20℃ ice bag transportation
Example 1

with synthesized miRNA hsa-miR-571 ( RNA copy number is 5*10 respectively)7 ~ 5*101 The cDNA was synthesized by reverse transcription using this kit with SYBR Green Premix (copies) as a template. Pro Taq HS qPCR Kit II (Code. AG11702) was used for quantitative PCR. The results are shown below:

The results are shown above:
① Working curve R2= 0.9997, amplification efficiency 90.3%.
② Accurate quantification can be performed over a wide range of templates, 5*107~5*101 The amplification curves in the range of copies RNA concentrations showed good linearity.
③ The melting curve has a single peak type, no spurious peaks, and strong amplification specificity.

Example 2

The cDNA was synthesized by reverse transcription using potato total RNA (2 μg, 200 ng, 20 ng, 2 ng, 200 pg) as a template using this kit, and the cDNA obtained was diluted 10-fold and then analyzed by using SYBR Green Premix, a product of the company. Pro Taq HS qPCR Kit II (Code. AG11702) was used to perform quantitative PCR for miRNA detection. stu-miR3903pThe results are shown below. The results are shown below:

The results are shown above:
① Working curve R2= 0.9977, amplification efficiency 105.81 TP3T.
② The amplification curves in the range of 2 μg ~ 200 pg RNA concentration showed good linearity.
③ The melting curve has a single peak type, no spurious peaks, and strong amplification specificity.

Example 3

The cDNA was synthesized by reverse transcription using HL60 Total RNA (2 μg, 200 ng, 20 ng, 2 ng, 200 pg) as a template using this kit, and the cDNA obtained was diluted 10-fold, and then analyzed by using SYBR Green Premix, a product of the Company. Pro Taq HS qPCR Kit II (Code. AG11702) for quantitative PCR. miRNA hsa-miR-4682The results are shown below. The results are shown below:

The results are shown above:
① Working curve R2= 0.9952, amplification efficiency 107.11 TP3T.
② The amplification curves in the range of 2 μg ~ 200 pg RNA concentration showed good linearity.
③ The melting curve has a single peak type, no spurious peaks, and strong amplification specificity.

Example 4

DNase I-treated RNA was reverse transcribed using this kit, followed by quantitative PCR for miRNA detection. hsa-miR-4682The following are the steps to be taken. The procedure is as follows:

① Extracted HL60 Total RNA was treated with DNase I (Cod. AG12001):

reagents  quantity added
RNA template (1 μg / μl) 10 μl
10X DNase I buffer 5 μl
DNase I (5 U/μl) 0.5 μl
RNase Free Water Up to 50 μl

The reaction was carried out at 37°C for 30 min;
Inactivation of DNase I:
Method 1: 80°C for 2 min.
Method 2: Add 2.5 μl of 200 mM EDTA and mix well at 80°C for 2 min. DNase I-treated RNA can be stored at -80°C or used directly in step 2 below.

② Synthesize cDNA by reverse transcription using DNase I-treated RNA (200 ng, 20 ng, 2 ng, 200 pg) as a template using this kit, and then dilute the cDNA by 10 times, and then synthesize cDNA using SYBR Green Premix, a product of the Company. Pro Taq HS qPCR Kit II (Code. AG11702) was used for quantitative PCR for miRNA detection. hsa-miR-4682

③ The results showed that DNase I treatment had no effect on subsequent reverse transcription. The results are shown below: