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Method and kit for detecting mutation of PDS gene 2168A>G by using fluorescence PCR technology

A kit and gene technology, applied in the direction of fluorescence/phosphorescence, biochemical equipment and methods, microbial measurement/inspection, etc., can solve problems such as unsuitable for popularization, time-consuming and labor-intensive, and many steps

Inactive Publication Date: 2014-10-29
史桂芝 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Direct sequencing of PCR products is currently the most widely used and more accurate method, but this method requires expensive instruments and professional personnel to operate, time-consuming and laborious, and it is difficult to promote in clinical practice
The gene chip method has the advantages of fast and high throughput, but the operation is complicated, there are many steps, the cost is high and it is not easy to popularize
The method of detecting gene mutation with restriction fragment length polymorphism (RFLP) has the advantage of low cost, but the process is cumbersome and takes a long time and is not suitable for popularization
The published patent 201010599385.X uses specific primers and probes to detect mutations through single nucleotide extension technology combined with microarray chip technology. This method is complex in operation, expensive in instruments, and difficult to popularize

Method used

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  • Method and kit for detecting mutation of PDS gene 2168A>G by using fluorescence PCR technology
  • Method and kit for detecting mutation of PDS gene 2168A>G by using fluorescence PCR technology
  • Method and kit for detecting mutation of PDS gene 2168A>G by using fluorescence PCR technology

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Embodiment 1: PDS gene 2168A / G mutation detection kit and its use

[0038] Composition of the kit

[0039] 1 tube of PCR reaction solution (500ul), 1 tube of positive quality control product (20ul), 1 tube of negative quality control product (20ul), 1 tube of DNA extraction solution (3ml), 1 bottle of red blood cell lysate (15ml).

[0040] The PCR reaction solution includes: 1XPCR Buffer, 0.2mM dNTPs, Taq enzyme 25U / ml, 0.2uM forward primer (SEQ ID NO: 1), 0.2uM reverse primer (SEQ ID NO: 2), 0.2uM wild-type fluorescent probe Needle (SEQ ID NO: 3), 0.2 uM mutant fluorescent probe (SEQ ID NO: 4).

[0041] Steps:

[0042] 1) Gene extraction: Take 100ul EDTA anticoagulated peripheral blood, add 600ul red blood cell lysate, place at room temperature for 5-10 minutes, mix several times during this period, centrifuge at 5000rpm for 5 minutes, discard the supernatant, then add 100ul DNA lysate, mix well , 99 degrees for 10 minutes, centrifuged, and the supernatant was take...

Embodiment 2

[0048] Embodiment 2: PDS gene 2168A / G mutation detection kit and its use

[0049] Composition of the kit

[0050] 1 tube of PCR reaction solution (500ul), 1 tube of positive quality control product (20ul), 1 tube of negative quality control product (20ul), 1 tube of DNA extraction solution (3ml), 1 bottle of red blood cell lysate (15ml).

[0051] The PCR reaction solution includes: 1XPCR Buffer, 0.2mM dNTPs, Taq enzyme 25U / ml, 0.2uM forward primer (SEQ ID NO: 1), 0.2uM reverse primer (SEQ ID NO: 2), 0.2uM mutant fluorescent probe needle (SEQ ID NO: 4).

[0052] The operating steps are the same as in Example 1.

[0053] Result analysis: Analyze the samples according to the fluorescence color curve of the positive quality control product. If there is a curve with the same fluorescent color as the positive quality control product, the sample has the PDS gene 2168A / G mutation, and it is impossible to distinguish heterozygous or homozygous mutations. If there is no fluorescence...

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Abstract

The invention provides a method and a kit for detecting mutation of PDS gene 2168A>G by using fluorescence PCR technology. The method comprises: aiming at a PDS 2168A>G mutation site, designing a specific mutation type probe and a wild type probe and respectively marking with different colors, designing amplimers at two sides of the mutation site; and performing amplification on a to-be detected sample by using a PCR reaction system containing the wild type probe, the mutation type probe and the amplimers, and comparing the fluorescence curve mode with that of a quality-control sample to determine whether the sample has PDS gene 2168A>G mutation. The method and the kit can provide clinical reference for disease cause diagnosis of deaf patient, especially deaf patients with enlarge vestibular aqueduct syndrome, also can be used to screen whether newborns and couples in pregnancy are carriers, and provides help for deaf antenatal diagnosis and newborn congenital deaf cause diagnosis. The kit has the characteristics of closed-tube high-flux automatic operation and analysis, and is especially usable in clinic laboratories.

Description

technical field [0001] The invention belongs to the technical field of gene detection, in particular to a method for detecting the mutation of deafness gene PDS 2168A>G by probe-specific real-time PCR technology and a kit thereof. Background technique [0002] Deafness is the most common disease causing language communication barriers, and the incidence of newborn deafness is 0.1% to 0.3%. There are many people with hearing and language disabilities in my country, and the number of deaf children born every year is increasing at a rate of 30,000. In my country, about 300,000 couples of childbearing age who have at least one deaf child face the choice of having another child. The cause of deafness, whether it is hereditary, and whether the next childbirth is safe are issues of great concern to deaf families. Enlarge vestibular aqueduct syndrome (EVAS) is an autosomal recessive hearing impairment disease with a relatively high incidence. Imaging examination data show that ...

Claims

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Application Information

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IPC IPC(8): C12Q1/68G01N21/64
CPCC12Q1/6858
Inventor 王宝恒史桂芝
Owner 史桂芝
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