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ADRB1 genotype rapid detection kit based on POCT mode

A kit and gene polymorphism technology, applied in the field of molecular biology, can solve problems such as time-consuming, unsatisfactory clinical promotion, and difficult promotion, so as to reduce the possibility of environmental pollution, reduce the background signal intensity, and avoid Effects of Medication Errors

Inactive Publication Date: 2019-01-22
重庆京因生物科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Sequencing method (such as patent CN105586406A) and gene chip method (such as patent CN102021238A) have high precision to the detection results, but need large-scale precision instruments and equipment, fixed laboratories and professional operators, therefore, the cost of these two detection methods is high , the steps are cumbersome and time-consuming, and it is difficult to promote clinically
Although the fluorescent PCR method based on Taqman probes (such as patent CN106834466A) has the advantages of low cost, short time and simple result analysis, because this reaction system can only amplify the purified genomic DNA sample, it must adopt multiple steps and multiple It is not ideal for clinical promotion
Therefore, these conventional detection techniques are difficult to meet the rapid and accurate detection requirements of ADRB1 (G1165C) mutant gene in China.

Method used

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  • ADRB1 genotype rapid detection kit based on POCT mode
  • ADRB1 genotype rapid detection kit based on POCT mode
  • ADRB1 genotype rapid detection kit based on POCT mode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] Embodiment 1 is used to detect the configuration of the PCR reaction solution of ADRB1 (G1165C) gene

[0073] PCR is an extremely sensitive technique for the detection of trace amounts of DNA. At present, the main samples of painless and non-invasive detection methods in clinical practice include oral swabs, hair, nails, oral saliva and body cavity fluid, etc. After the contained DNA is extracted and purified, it can be added to the PCR reaction system for reaction, which requires a lot of manpower, material resources, and financial resources. In order to solve the problem of DNA purification, oral mucosal exfoliated cells were used instead of purified DNA for PCR; considering that the amplification effect after directly adding cells was not ideal and not suitable for clinical testing, the applicant tried to add a certain concentration of self-made cell lysate. And the comparative experiment of adding cell lysate and not adding cell lysate was carried out. The cell ly...

Embodiment 2

[0089] Example 2 LNA modified probe improves typing accuracy

[0090] LNA is an oligonucleotide derivative that has a similar structure to DNA / RNA, so it can effectively recognize and bind DNA and RNA. After LNA is used to modify oligonucleotides, it can increase the thermal stability of primers or probes and increase their annealing temperature by 3-8°C. The probes developed in this kit are modified with LNA. According to the software prediction, the Tm values ​​of the modified wild-type probes and mutant probes combined with the template are all increased by about 4°C. In order to fully demonstrate the difference between LNA-modified probes and non-LNA-modified probes, the following comparative experiments were carried out. The PCR system is shown in Table 2-1, and wild homozygotes, heterozygotes and mutant homozygotes were detected respectively. Three sets were made for each genotype. Repeat, the reaction program is: pre-denaturation at 95°C for 5 min; denaturation at 95°C...

Embodiment 3

[0109] Embodiment 3 accuracy test

[0110] This kit uses oral mucosal exfoliated cells as amplified samples. Due to the living habits of the tested personnel and the diversity of individual gene sequences, the reagents may be interfered during typing. In order to verify the typing accuracy of this kit, this experiment uses Oral mucosal exfoliated cells of three persons with different genotypes were tested (the genotypes of the test persons were all confirmed by sequencing methods), and the operation method refer to figure 1 The operation process, the total number of samples is 300 cases, and the reagent formula is shown in Table 1-1.

[0111] Experimental results:

[0112] Table 3-1 Statistics of correct rate of three genotypes

[0113]

[0114] As can be seen from Table 3-1, in the sample test of 300 cases, the detection accuracy of this kit can reach 99.3%. Preliminary indications are that in accordance with figure 1 Under the condition that the operating procedure is...

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Abstract

The invention provides an ADRB1 genotype rapid detection kit based on a POCT mode. The kit comprises fluorogenic quantitative PCR primers and probes as well as a cell lysis solution, wherein the fluorogenic quantitative PCR primers and the probes are used for detecting the ADRB1 genotypes (G1165C), the sequences of the PCR primers are as shown in SEQ ID NO.1-2, and the sequences of the probes areas shown in SEQ ID NO.3-4. The kit can realize instant detection, DNA purification is not needed, a sample can be directly added into a reagent for carrying out a PCR reaction, the kit is particularlysuitable for rapidly and accurately detecting samples (such as shedding buccal cells) with low content of DNA, the detection accuracy rate achieves 99% or above, the detection sensitivity is high, and genomic DNA of which the amount is as low as 0.1ng can be accurately detected; and the whole detection consumes short time, a detection result can be obtained within 1h, an administration basis canbe provided for a doctor at first time, and thus the administration risk of patients is reduced.

Description

technical field [0001] The invention relates to the field of molecular biology, in particular to a POCT mode-based rapid detection kit for ADRB1 genotype. Background technique [0002] The β1-adrenergic receptor (ADRB1) belongs to the adrenergic receptor family, is coupled to guanosine nucleoside protein (G protein) and is widely distributed in cardiomyocytes. ADRB1 is a protein receptor containing 477 amino acid residues. After binding to catecholamine, it can activate adenylate cyclase (AC) to generate a large amount of cyclic adenosine monophosphate (cAMP), thereby further activating protein kinase A to regulate heart rate. and blood pressure. [0003] ADRB1 has a single nucleotide polymorphism (SNP), in which the G1165C (rs1801253) site mutation causes the 389th glycine (Gly) to be replaced by arginine (Arg). G1165C is a mutation site significantly associated with hypertension. Therefore, in order to achieve the effect of lowering blood pressure, the activity of ADRB1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12Q1/6883C12Q1/6858C12N15/11
CPCC12Q1/6858C12Q1/6883C12Q2600/106C12Q2600/156C12Q2531/113C12Q2563/107
Inventor 贺庭祯罗德朋向霄熊伟黎帮勇钟越刘黎董锐崔奇新杨园
Owner 重庆京因生物科技有限责任公司
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