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A kit for RNA immunoprecipitation using protein antibodies

An immunoprecipitation and kit technology, applied in the field of immunoprecipitation, can solve the problems of long delivery cycle, error-prone, high price, etc., and achieve the effects of short time consumption, reduced degradation and high specificity

Active Publication Date: 2021-03-02
上海纽仁生物医药科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there is no domestic company that develops RNA immunoprecipitation kits. If you follow the literature, you will need to spend a lot of time to optimize the experimental conditions. However, the kits of foreign companies such as Millipore are expensive and have a long delivery cycle, and the operation is cumbersome. Millipore The delivery cycle of the kit is generally 3-4 weeks, and it takes 2-3 days or even longer to complete the entire experiment, and a large amount of organic solvents are used in the experiment process, which is harmful to the human body and the environment. In addition, There are nearly 20 kinds of reagents in the millipore kit, which is a great test for the operator's skills and patience, and the experimental process requires the use of a -80°C ultra-low temperature refrigerator. Since RNA is easy to degrade, long-term operation will reduce its yield. , too many reagents in the experiment process are prone to errors, resulting in inaccurate experimental results, so it is imminent to develop an economical, easy-to-operate, short-time-consuming and stable kit

Method used

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  • A kit for RNA immunoprecipitation using protein antibodies
  • A kit for RNA immunoprecipitation using protein antibodies
  • A kit for RNA immunoprecipitation using protein antibodies

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The usage method of embodiment 1 kit

[0033] 1: Preparation of magnetic beads

[0034] ①: Mix the magnetic beads before use;

[0035] ②: Take the required amount of 1.5mL RNase-free centrifuge tube, add magnetic beads at 50 μL / tube; put it on the magnetic stand and wait for 1-3min, use the RNase-free pipette tip to suck up the liquid and keep the magnetic beads;

[0036] ③: Remove the centrifuge tube from the magnetic stand, add 200 μL / tube of lysate containing 2U / μL RNase inhibitor, and vortex gently;

[0037] ④: Put it on the magnetic stand, wait for 1-3min, then use the RNase-free pipette tip to suck up and discard the supernatant;

[0038] ⑤: Repeat the above cleaning once; remove the centrifuge tube;

[0039] ⑥: Add 100 μL / tube of lysate containing 2U / μL RNase inhibitor and 5 μg / tube of the target antibody, which should be an antibody that can be used for immunoprecipitation;

[0040] ⑦: Gently shake at room temperature on a 360 ° shaker for 30 minutes; during...

Embodiment 2

[0062] Example 2 The inspection test of the kit

[0063] Use the FMRP protein antibody (Wuhan Sanying Biotechnology Co., Ltd., catalog number 66548-1-Ig) to perform RNA immunoprecipitation according to the above steps, and use the RNA immunoprecipitation kit (EZ-Magna RIP TM RNA-Binding Protein Immunoprecipitation Kit, item number 17-701) was carried out comparative test, and the RNA obtained was carried out quality detection by Agilent 2100 RNA detector, and the results were as follows Figure 1-3 shown.

[0064] figure 1 Because no FMRP antibody was added, using the kit provided by the present invention to extract the RNA obtained, it can be seen that basically no RNA is detected, indicating that the kit provided by the present invention will not appear false positives.

[0065] figure 2 In order to use the kit provided by the present invention to extract the obtained RNA, the obtained RNA concentration is 86pg / μL, and the RNA is mainly concentrated in 1000-2000bp.

[0...

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Abstract

The invention discloses a kit for performing RNA immunoprecipitation by using protein antibodies, belonging to the technical field of immunoprecipitation. The kit mainly uses the target protein for immunoprecipitation to isolate the RNA bound to the protein. Compared with the existing kits from Millipore, this kit has the advantages of high specificity, high efficiency, short time-consuming, low cost, and easy operation. It is a commonly used reagent in the laboratory, most of which are non-toxic and harmless; first use formalin solution to fix various protein structures to ensure that the protein-RNA complex structure is destroyed, reduce the RNA yield, and at the same time inactivate various nucleases , reducing its degradation of RNA.

Description

technical field [0001] The invention relates to a kit for performing RNA immunoprecipitation by using protein antibodies, belonging to the technical field of immunoprecipitation. Background technique [0002] There are many RNA-binding proteins in the body. After binding to RNA, these proteins will cut or shear the RNA or transport it to a specific site to transcribe into protein to perform specific functions. Under pathological conditions, specific protein-binding RNA will occur Quality and quantity changes, RNA is isolated for follow-up detection such as real-time quantitative PCR or sequencing, which can provide an in-depth understanding of the pathogenesis of the disease, which is conducive to the development of new therapeutic drugs. [0003] At present, there is no domestic company that develops RNA immunoprecipitation kits. If you follow the literature, you will need to spend a lot of time to optimize the experimental conditions. However, the kits of foreign companies...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12Q1/6806C12N15/10G01N33/539
CPCC12N15/1003C12Q1/6806G01N33/539C12Q2563/143C12Q2563/149
Inventor 张允斌
Owner 上海纽仁生物医药科技有限公司
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