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Hsa-mir-520a-3p detection kit and detection method based on allglo probe fluorescent quantitative PCR

A technology of cel-mir-39 and detection kit, applied in the field of MicroRNA, can solve the problems of unfavorable promotion and expensive synthesis, and achieve the effects of low background signal, fast and accurate detection, and simple synthesis procedure

Inactive Publication Date: 2015-12-30
ZHONGSHAN HOSPITAL XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reverse transcription primer based on the stem-loop structure can specifically recognize and amplify the mature miRNA sequence, but the precursor of the miRNA has not been amplified. The disadvantage of Taqman-MGB probe detection of miRNA is that the synthesis is expensive, which is not conducive to popularization.

Method used

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  • Hsa-mir-520a-3p detection kit and detection method based on allglo probe fluorescent quantitative PCR
  • Hsa-mir-520a-3p detection kit and detection method based on allglo probe fluorescent quantitative PCR
  • Hsa-mir-520a-3p detection kit and detection method based on allglo probe fluorescent quantitative PCR

Examples

Experimental program
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Effect test

Embodiment 1

[0051] see figure 1 , the embodiment of the hsa-miR-520a-3p detection kit based on AllGlo probe fluorescent quantitative PCR of the present invention is provided with a box body 1, a partition 2, an exogenous reference bottle 3, and a stem-loop reverse transcription reagent bottle 4 , Real-time fluorescent quantitative PCR reagent bottle 5; Partition plate 2 is arranged in box body 1, exogenous reference bottle 3, stem-loop reverse transcription reagent bottle 4, real-time fluorescent quantitative PCR reagent bottle 5 are inserted on the partition plate 2, exogenous The sex reference bottle 3 is equipped with an exogenous reference, the stem-loop reverse transcription reagent bottle 4 is equipped with a stem-loop reverse transcription reagent, and the real-time fluorescent quantitative PCR reagent bottle 5 is equipped with a real-time fluorescent quantitative PCR reagent.

[0052] ① The exogenous reference can be cel-miR-39, etc., the cel-miR-39 is a nematode miRNA, and its wo...

Embodiment 2

[0056] The detection of serum or plasma hsa-miR-520a-3p comprises the following steps:

[0057] 1. Collect plasma or serum:

[0058] Take 2mL of fresh blood samples and put them in EDTA anticoagulant tubes or anticoagulant-free tubes. Immediately invert the above test tubes and mix them 6-8 times, then place the above test tubes in a centrifuge at 3000rr for 10min, take them out and place them in a test tube rack First, carefully draw the supernatant and put it into a new 1.5mL RNase-free centrifuge tube, place the 1.5mL centrifuge tube containing the supernatant in a centrifuge at 13000r for 10min, and transfer the upper plasma or serum to In a new 1.5mL RNase-free centrifuge tube (be careful not to absorb the cell pellet in the lower layer during this step), aliquot 400-500μL for each tube, take 200μL for the next step of extraction, and freeze the remaining plasma or serum at -80°C live.

[0059] 2. Extract microRNA

[0060] Use the miRNA extraction kit (DP501) produced ...

Embodiment 3

[0082] Example 3. Tissue or cell miRNA detection

[0083] 1. Sample handling:

[0084] a. Tissue: Triturate the tissue in liquid nitrogen. For every 30-50 mg of animal tissue or 100 mg of plant tissue, add 1 mL of lysate MZ (manufactured by Tiangen Biotechnology Co., Ltd.), and use a homogenizer for homogenization. The sample volume should not exceed 10% of the MZ volume of the lysate.

[0085] b. Monolayer culture cells: directly add lysate MZ to the culture plate to lyse the cells, every 10cm 2 Add 1mL LMZ to the area. Swipe several times with a sampler.

[0086] c. Cell suspension: centrifuge for 800r5min to take the cells, and discard the supernatant. Add 1mL Lysis Buffer MZ, oscillate or pipette several times to mix. Do not wash the cells before adding Lysis Buffer MZ to avoid RNA degradation.

[0087] 2. Tissue, cell miRNA extraction and enrichment

[0088] The miRNA extraction kit (DP501) produced by Tiangen Biotechnology Co., Ltd. was used to extract tissue or ...

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Abstract

The invention relates to microRNA, particularly an hsa-miR-520a-3p detection kit based on AllGlo probe fluorescence quantitative PCR (polymerase chain reaction) and a detection method thereof. The kit is provided with a box body, partitions, an exogenous reference bottle, a stem-loop reverse transcription reagent bottle and a real-time fluorescence quantitative PCR reagent bottle. The method comprises the following steps: extracting miRNA (microribonucleic acid) in a sample, wherein if the sample is serum / plasma or any other body fluid, after the sample is sufficiently cracked, 5 mu L of 5n mol exogenous reference cel-miR-39 provided by the kit is added and vortex oscillation is performed, and if the sample is a cell or tissue sample, no exogenous reference cel-miR-39 is needed; carrying out real-time PCR amplification on the stem-loop reverse transcription reagent reverse transcription miRNA provided by the kit as cDNA (omplementary deoxyribonucleic acid) by using the real-time fluorescence quantitative PCR reagent provided by the kit; and setting reasonable thresholds and base lines according to data given by a comprehensive analysis instrument, and carrying out result analysis.

Description

technical field [0001] The invention relates to MicroRNA, in particular to a hsa-miR-520a-3p detection kit based on AllGlo probe fluorescence quantitative PCR and a detection method thereof. Background technique [0002] MicroRNA (miRNA) is a kind of non-coding RNA molecule of about 22 nucleotides widely present in eukaryotic cells, which participates in many physiological and pathological processes in organisms, by regulating gene expression, in cell proliferation, apoptosis , growth and development, cell differentiation, metabolism and other processes play an important role. Specifically, miRNA forms the initial primary transcript pri-miRNA to pre-miRNA in the nucleus, and then transports out of the nucleus to form mature miRNA through cleavage. Form RISC (RNA-induced silencing complex) with Ago protein, partially inhibit or degrade target mRNA sequence, and participate in gene expression regulation (BartelDP. MicroRNAs: genomics, biogenesis, mechanism, and function [J]. C...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12Q1/68C12M1/34
CPCC12Q1/6851C12Q1/686C12Q2563/107C12Q2561/113C12Q2525/207C12Q2545/113
Inventor 唐晶张忠英方赞熙
Owner ZHONGSHAN HOSPITAL XIAMEN UNIV
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