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Reagent case for detecting 589G >A mutation of large vestibular aqueduct related gene SLC26A4

A technology of SLC26A4 and kit, which is applied in DNA/RNA fragments, recombinant DNA technology, microbial measurement/inspection, etc., and can solve problems such as changes in membrane labyrinth structure

Inactive Publication Date: 2008-07-30
GENERAL HOSPITAL OF PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And due to toxic mechanisms of altered osmotic pressure and altered composition lead to altered membrane labyrinth structure

Method used

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  • Reagent case for detecting 589G >A mutation of large vestibular aqueduct related gene SLC26A4
  • Reagent case for detecting 589G >A mutation of large vestibular aqueduct related gene SLC26A4
  • Reagent case for detecting 589G >A mutation of large vestibular aqueduct related gene SLC26A4

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] [Example 1] Detection method for 109G>T heterozygous mutation of SLC26A4 gene

[0066] 1. Preparation of blood sample DNA of the subject to be tested

[0067] 1. Research objects: 89 patients with enlarged vestibular aqueduct collected from the deaf outpatient clinic, and 80 normal controls. All participants were investigated in detail about their medical history and family history, and a physical examination was performed on them. The otological examination included otoscopy and audiological evaluation. After signing the informed consent form, 5-10ml blood samples were collected from each person.

[0068] 2. Genomic DNA extraction: using phenol-chloroform extraction method.

[0069] first day

[0070] 1) Anticoagulant blood was diluted 1-fold with PBS.

[0071] 2) Add 2 times the volume of lymph separation solution (18°C-28°C) into the centrifuge tube, spread a layer of 1 times the volume of diluted blood on top, centrifuge at 1000×g at room temperature for 20 minu...

Embodiment 2

[0148] [Example 2] Research on the evolution of mutation sites

[0149] Mutation analysis: sequence comparison analysis was performed using SeqmanTM software in the DNAStar5.0 (Lasergene Inc.) software package. The sequence obtained by sequencing was compared with the standard sequence retrieved by NCBI to find out the mutant sequence and the mutation site (109G>T, E37X).

[0150] Evolutionary study: The 109G>T mutation is located at the amino terminal of Pendrin, which terminates the amino acid code at position 37, and the subsequent 734 amino acids are lost. This mutation must affect the structure and function of Pendrin.

[0151] Detection of 589G>A heterozygous mutation in SLC26A4 gene

[0152]A patient with an enlarged vestibular aqueduct was used as the research object. Through the screening of the exons in the coding region of the SLC26A4 gene in 89 family members of the disease and 80 normal controls, it was found that a patient with an enlarged vestibular aqueduct...

Embodiment 3

[0153] [Example 3] Detection method for 589G>A heterozygous mutation of SLC26A4 gene

[0154] Basic methods and steps refer to Example 1, wherein the PCR amplification of exon 5 of the SLC26A4 gene uses the following primers:

[0155] Upstream primers:

[0156] PDS5-F: 5'-CAAAGTGCTGCGGTTACAGA-3'(nt13356-nt13375)

[0157] Downstream primers:

[0158] PDS5-R: 5'-AATTTTGGGTTCCAGGAAAT-3'(nt13816-nt13835)

[0159] The PCR reaction system is shown in FIG. 8 ; the agarose gel electrophoresis pattern of electrophoresis and quantification of the PCR products is shown in FIG. 9 ; and the sequencing map is shown in FIG. 10 .

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Abstract

The invention relates to a detecting method, which detects whether the SLC26A4 genetic mutation exists in the individual sample to be detected, and diagnoses the generation and the type of the large vestibular aqueduct in the individual to be detected; wherein, the SLC26A4 genetic mutation is 589G being larger than A heterozygous mutation on the exon 5 of SLC26A4 gene. The invention further relates to a reagent kit for detecting whether the SLC26A4 genetic mutation exists in the individual sample to be detected, and the application of the SLC26A4 gene in diagnosing and / or treating the large vestibular aqueduct related diseases. The genetic mutation and detecting method are favorable for the screening the SLC26A4 genetic mutation in the deaf people, and diagnose and treat the deaf people.

Description

[0001] This application is a divisional application of Chinese patent application 200510132214.5. technical field [0002] The invention relates to a kit for detecting SLC26A4 mutation gene. Background technique [0003] The SLC26A4 gene is located at 7q31, which was originally located by Everett et al., and found that the mutation of this gene can lead to an autosomal recessive genetic disease: Pendred syndrome, clinical manifestations of goitre, and combined vestibular aqueduct enlargement or Mondini malformation ( Enlarged vestibular aqueduct combined with cochlear hypoplasia) sensorineural deafness. Later, Usami et al. screened the SLC26A4 gene in 6 families with simple vestibular aqueduct enlargement, showing that the mutation of this gene can also lead to simple vestibular aqueduct enlargement, and its genetic mode is also recessive inheritance. It can be seen that the SLC26A4 gene mutation Can cause vestibular aqueduct enlargement - pure vestibular aqueduct enlargeme...

Claims

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Application Information

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IPC IPC(8): C12Q1/68C12N15/11
Inventor 王秋菊赵亚丽
Owner GENERAL HOSPITAL OF PLA
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