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The use of snp markers in the preparation of kits for assisting in assessing the risk of transplant rejection

A technology of transplant rejection and kit, applied in the medical field, to achieve the effect of assisting the assessment of transplant rejection risk and autoimmune disease

Active Publication Date: 2020-01-17
广州博富瑞医学检验有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, there is no clinical report on the application of DQ promoter SNP analysis to organ transplantation. If the DQ promoter SNP can be analyzed to clarify the expression level of DQ protein in patients under immune status, it can be predicted by the patient's antigen presentation ability. The risk of humoral rejection after surgery, promote the status quo of early prediction of organ transplant rejection in my country, and guide the selection of donors in clinical practice, the dosage of immunosuppressants, etc.

Method used

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  • The use of snp markers in the preparation of kits for assisting in assessing the risk of transplant rejection
  • The use of snp markers in the preparation of kits for assisting in assessing the risk of transplant rejection
  • The use of snp markers in the preparation of kits for assisting in assessing the risk of transplant rejection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Example 1 Acquisition of a group of HLA-related SNP markers

[0039] 1.1 Example 1 Acquisition of blood samples

[0040] Example 1 The blood samples were 6 blood samples randomly selected from the whole blood samples before transplantation of kidney transplant patients collected by the Department of Organ Transplantation of the First Affiliated Hospital of Sun Yat-sen University, and used for genomic DNA extraction.

[0041] 1.2 Example 1 Genomic DNA extraction from blood samples

[0042]In this experiment, TIANamp Blood DNA Kit (catalog number: DP348) was used to extract genomic DNA from the blood sample of Example 1, and the specific steps were as follows:

[0043] (1) Gently invert and mix the whole blood samples of the six patients in Example 1, and draw 200ul of them into a new 1.5ml EP tube (if the DNA extraction concentration is too low, the blood samples can also be centrifuged at 500g for 5min and stratified, take 200ul of buffy coat cells in the middle for s...

Embodiment 2

[0077] The difference between this embodiment and the embodiment is that the primers used in the amplification have the nucleotide sequences shown in SEQ ID NO: 1 and SEQ ID NO: 5; when sequencing, forward sequencing or reverse sequencing can be used. For sequencing, the forward sequencing primer is SEQ ID NO: 1, and the reverse sequencing primer is SEQ ID NO: 5.

Embodiment 3

[0079] The difference between this embodiment and the embodiment is that the primers used in the amplification are the nucleotide sequences shown in SEQ ID NO: 3 and SEQ ID NO: 5; when sequencing, forward sequencing or reverse sequencing can be used. , the forward sequencing primer is SEQ ID NO:3, and the reverse sequencing primer is SEQ ID NO:5.

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Abstract

The invention provides a group of HLA-related SNP marks and a detection primer and a determination method thereof, and aims at providing a primer and a method for transplanting risk evaluation. The technical scheme is that the SNP marks comprise a first SNP mark, a second SNP mark and a third SNP mark, wherein the first SNP mark is a basic group A or T in the 32623514 position of the human No.6 chromosome; the second SNP marker is a basic group G or T in the 32623555 position of the human No.6 chromosome; the third SNP mark is a basic group A or T in the 32623560 position of the human No.6 chromosome; a primer pair for detecting the group of SNP markers in the claim 1 have the nucleotide sequences shown as SEQ ID NO:1 to 2 or SEQ ID NO:1 and 5 or SEQ ID NO:3 and 5 or SEQ ID NO:4 and 5. Thedetermination method of the HLA-related SNP sites comprises the following steps of (1) extracting the genome DNA of a host cell; (2) performing PCR amplification on the template DNA; purifying the PCR product SAP / Exon I; (3) respectively performing forward and / or reverse sequencing amplification on the purified PCR product by a sequencing primer; purifying the sequencing product; performing ABI 37030xl capillary electrophoresis sequencing so as to determine the SNP site and genotype.

Description

technical field [0001] The invention relates to the field of medical technology, in particular to an analysis of SNP markers related to the HLA DQ promoter, and prediction of rejection risk assessment after organ transplantation in patients through the group of SNP markers. Background technique [0002] In the field of organ transplantation, various rejection reactions caused by HLA antibody-mediated humoral immunity are the most critical factors affecting the survival of human / graft after transplantation. [0003] SNP (Single nucleotide polymorphism, single nucleotide polymorphism) mainly refers to the DNA sequence polymorphism caused by single nucleotide variation at the genome level. [0004] In the human population, HLA (Human leukocyte antigen, human leukocyte antigen) has abundant polymorphisms. In organ transplantation, HLA antigens in the endothelial cells of donor organs are often used as recognition antigens, causing a series of rejection reactions and affecting th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12Q1/6881C12Q1/6869C12N15/11
CPCC12Q1/6869C12Q1/6881C12Q2600/156C12Q2531/113C12Q2565/125
Inventor 姚远余小林王琛
Owner 广州博富瑞医学检验有限公司
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