Keshan disease gene screening kit

A kit and technology for Keshan disease, applied in the direction of enzymes, biochemical equipment and methods, DNA/RNA fragments, etc., can solve the problem of unsatisfactory explanation of the pathogenesis and clinical features of Keshan disease, not fully clarified etiology and other issues

Active Publication Date: 2021-05-14
SICHUAN PROVINCIAL PEOPLES HOSPITAL +2
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  • Abstract
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Problems solved by technology

The etiological hypothesis of Keshan disease, one hypothesis is the nutritional biogeochemical etiological hypothesis, which mainly focuses on selenium deficiency as the main pathogenic factor causing the onset of Keshan disease, and the other is the biological etiology theory, mainly including Coxsackie virus, etc. The theory of viral infection, but none of them can satisfactorily explain the pathogenesis and clinical features of Keshan disease
In recent years, new progress has been made in the etiology research of dilated heart disease at home and abroad, and the role of genetic factors in the pathogenesis of dilated heart disease has been paid more and more attention. A few studies have suggested that the incidence of Keshan disease is related to related gene polymorphisms and mutations, but it has not been fully clarified. the cause of

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Embodiment 1

[0034] Embodiment 1 Kit of the present invention (Sanger sequencing kit)

[0035] 1. Kit composition

[0036] The kit of the present invention includes amplification reagents and reagents for Sanger sequencing.

[0037] 1.1 Amplification Reagents

[0038] The PCR amplification reagent is used to amplify a DNA sequence where the SNP site is located, and its composition is shown in Table 1.

[0039] Table 1 PCR amplification reagents

[0040] components concentration volume PCR mix 2× 600μl Primer pair 10μM 100μl pure water 2ml

[0041] The PCR mixture in Table 1 includes components required for conventional PCR such as Taq enzyme, dNTP, and magnesium ions.

[0042] The sequencing amplification primer sequence of SEPHS2 c.868delG is as follows:

[0043] Forward primer: TGGCAGATTATGAATAACAAAGGACACT (SEQ ID NO.1), reverse primer: GCCCACCAATGGCTGGATA (SEQ ID NO.2);

[0044] Or, forward primer: TTTCCCTTTTCCACAATGCCAACG (SEQ ID NO. 3),...

experiment example 1

[0073] Experimental Example 1 Verification of Keshan Disease Mutation Gene

[0074] The inventor found a selenoprotein-related SEPHS2 gene mutation in the blood sample DNA of a Keshan disease patient. Compared with the NM_012248.2 transcript in Genbank, this mutation is a frameshift mutation c.868delG, the deletion of the 868th base G, resulting in a change in the base sequence of the DNA template chain, resulting in a loss of function (LOF) of the protein , the deletion of this base leads to the loss of translation of the subsequent amino acid at position 290 (glutamic acid). This mutation is a rare mutation with high pathogenicity.

[0075] Investigating the family of the patient with the SEPHS2 gene mutation (referred to as "patient A"), it was found that the brother of patient A did not suffer from Keshan disease, and the mother, sister and son of patient A all suffered from Keshan disease. The family diagram is as follows figure 1 shown.

[0076] The SEPHS2 gene of pati...

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Abstract

The invention discloses a Keshan disease selenoprotein related gene screening kit, and belongs to the field of molecular diagnosis. The kit disclosed by the invention can be used for detecting the SRPHS2 gene with c.868delG mutation, so that Keshan disease can be screened. The invention further provides application of the reagent for detecting the c.868delG mutated SRPHS2 gene in the preparation of the Keshan disease gene screening kit. According to the invention, early warning can be made for early diagnosis of Keshan disease and prenatal breeding, and the application prospect is good.

Description

technical field [0001] The invention belongs to the field of molecular diagnosis, in particular to a gene screening kit for Keshan disease. Background technique [0002] Keshan disease (KD) is an endemic cardiomyopathy, the pathogenic mechanism is not yet clear, the main myocardial lesion in Keshan disease patients is multiple focal necrosis. Since 1990, no cases of acute Keshan disease have been found in the national monitoring of Keshan disease. Only Sichuan Province found 6 cases of subacute Keshan disease in 2006. The survival rate of patients with chronic and latent Keshan disease is still relatively low. [0003] The etiology of Keshan disease is unknown. In addition to the high incidence of Keshan disease in epidemic areas, it is difficult to distinguish Keshan disease from heart expansion disease clinically. The clinical prognosis of Keshan disease is poor, which causes a burden to the family and society. Effective prevention and intervention measures become the key...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12N15/52C12Q1/6883
CPCC12N9/00C12Q1/6883C12Q2600/156
Inventor 李小平罗蓉郑晨晴杨正林颜超马慧慧刘胜中刘明江
Owner SICHUAN PROVINCIAL PEOPLES HOSPITAL
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