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ATM gene mutation detection specific primer and liquid chip

A detection solution and specificity technology, which is applied in the field of molecular biology, can solve problems such as unusable and unsatisfactory for practical applications, and achieve consistent detection results, improve detection accuracy, and simple steps

Active Publication Date: 2013-04-10
SUREXAM BIO TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The PCR-RFLP method is based on the change of the restriction endonuclease recognition site caused by gene mutation, such as the loss of the site or the generation of a new site, a specific fragment is amplified by PCR, and then cut and amplified with a restriction endonuclease. Amplify the product and observe the size of the fragment by electrophoresis. This method is used to detect gene mutations with altered restriction sites, and can directly determine the genotype. However, this method cannot be used for the detection of gene mutations without new restriction sites.
Again, the above methods all have limitations in detection throughput, and can only detect one mutation type at a time, which cannot meet the needs of practical applications.

Method used

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  • ATM gene mutation detection specific primer and liquid chip
  • ATM gene mutation detection specific primer and liquid chip
  • ATM gene mutation detection specific primer and liquid chip

Examples

Experimental program
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Effect test

Embodiment 1

[0021] Embodiment 1 ATM gene mutation detection liquid chip mainly includes:

[0022] 1. ASPE Primers

[0023] Specific primer sequences were designed for wild type and mutant types of six common genotypes of ATM gene T2572C, A7325C, G7328A, C9022T, G9023A and C9139T. ASPE primers consist of "tag sequence + specific primer sequence". ASPE primer sequences are shown in the table below:

[0024] The ASPE primer sequence (tag sequence+specific primer sequence) of table 1ATM gene

[0025]

[0026]

[0027] Each ASPE primer includes two parts, the 5' end is a specific tag sequence for the anti-tag sequence on the corresponding microsphere, and the 3' end is a mutant or wild-type specific primer fragment (as shown in the above table 1). All ASPE primers were synthesized by Shanghai Sangon Bioengineering Technology Service Co., Ltd. Each synthesized primer was prepared into a stock solution of 100 pmol / mL with 10 mmol / L Tris Buffer.

[0028] 2. Microspheres coated with ant...

Embodiment 3

[0087] The liquid phase chip of embodiment 3 different ASPE primers is to the detection of ATM gene mutation site

[0088] 1. Design of liquid phase chip preparation (selection of tag sequence and Anti-tag sequence)

[0089] Taking the ATM gene T2572C and G7328A site mutation detection liquid chip as an example, the specific primer sequence of the 3' end of the ASPE primer was designed for the wild type and mutant type of T2572C and G7328A respectively, and the tag sequence of the 5' end of the ASPE primer was selected from SEQ ID NO.1-SEQ ID NO.12, correspondingly, the anti-tag sequence coated on the microsphere and complementary to the corresponding tag sequence is selected from SEQ ID NO.25-SEQ ID NO.36. The specific design is shown in the following table (Table 7). The synthesis of ASPE primers, microspheres coated with anti-tag sequences, amplification primers, detection methods, etc. are as described in Example 1 and Example 2.

[0090] Table 7 Design of liquid phase c...

Embodiment 4

[0102] The selection of embodiment 4ATM gene mutation detection specific primer sequence

[0103] 1. Design of liquid-phase chip preparation (selection of wild-type and mutant-specific primer sequences)

[0104] Taking the ATM gene A7325C and C9022T mutation site detection liquid chip as an example, using the forward or reverse complementary sequence of the target sequence where the mutation site is located as a template, design ASPE primers for the wild type and mutant type of A7325C and C9022T respectively The specific primer sequences at the 3' end include the preferred specific primer sequences and 2 alternative specific primer sequences in Example 1 of the present invention, as shown in Table 10. in, Inner bases are mutation sites.

[0105] Table 10 specific primer sequence

[0106]

[0107]

[0108] Taking the mutation site detection liquid chip of ATM gene A7325C and C9022T as an example, different specific primer sequences were selected for A7325C and C9022T,...

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Abstract

The invention discloses an ATM gene mutation detection specific primer and a liquid chip. The liquid chip mainly comprises ASPE primers consisting of tag sequences at a 5' end and specific primer sequences aiming at target gene mutation sites at a 3' end, microspheres coated with anti-tag sequences and an amplification primer, wherein the specific primer sequences are as follows: SEQ ID NO.13 and SEQ ID NO.14 which aim at a T2572C site, SEQ ID NO.15 and SEQ ID NO.16 which aim at an A7325C site, SEQ ID NO.17 and SEQ ID NO.18 which aim at a G7328A site, SEQ ID NO.19 and SEQ ID NO.20 which aim at a C9022T site, SEQ ID NO.21 and SEQ ID NO.22 which aim at a G9023A site, and / or SEQ ID NO.23 and SEQ ID NO.24 which aim at a C9139T site. The detection liquid chip provided by the invention has the advantages that the matching rate between the detection result and a sequencing method is up to 100%, and the wild-type and mutant parallel detection of multiple mutant sites can be realized.

Description

technical field [0001] The invention belongs to the field of molecular biology, relates to medicine and biotechnology, in particular to a specific primer for ATM gene mutation detection and a liquid phase chip. Background technique [0002] Ataxia-telangiectasia mutated (ATM) is the causative gene that causes ataxia telangiectasia. ATM gene is an important signal sensor. In the process of DNA damage repair, As a recognition factor, ATM detects damaged DNA and repairs DNA double-strand breaks by phosphorylating target proteins. [0003] The ATM gene is located on chromosome 11q22.3, with a length of 150kb and 66 exons, and the fourth exon is the first coding exon. ATM protein is a phosphorylated macromolecular nucleophosmin protein encoded by the ATM gene, containing 3056 amino acids. Studies have shown that ATM gene mutation is closely related to the occurrence of tumors. [0004] At present, there are few methods for detecting and analyzing ATM gene mutations, mainly inc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12Q1/68C12N15/11G01N21/64
Inventor 许嘉森郭靖甘丹翠
Owner SUREXAM BIO TECH
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