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Primer group and kit for amplifying PKD1 gene

A technology of primer sets and kits, applied in the field of genetic detection of genetic diseases, can solve the problems of cumbersome methods, low detection efficiency, high workload and cost, and achieve accurate detection results

Active Publication Date: 2021-01-08
上海韦翰斯生物医药科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, PKD1 has 46 exons. Amplifying each exon of PKD1 separately and then performing next-generation sequencing requires a high workload and cost, and it is difficult to specifically amplify the PKD1 true gene. The accuracy of the results It will be interfered by the pseudogene sequence; although there is no need to amplify each exon separately in some articles, there are too many primer sets to be used in the process of amplifying the PKD1 gene, the method is too cumbersome, and the detection efficiency is low
Or use nested PCR to enrich the PKD1 true gene. Usually, a few long-segment PCRs are used to amplify the PKD1 gene, and then the long-segment PCR product is used as a template to enrich the PKD1 true gene. The operation is relatively complicated; or use the next-generation sequencing method to detect PKD1, it is difficult to specifically capture the PKD1 true gene, and the second-generation sequencing read length is short, the high homology of true and false genes makes the data can not be compared specifically; or use the third-generation sequencing method to detect PKD1, the cost is relatively high

Method used

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  • Primer group and kit for amplifying PKD1 gene
  • Primer group and kit for amplifying PKD1 gene
  • Primer group and kit for amplifying PKD1 gene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] Embodiment 1 Long fragment PCR amplification

[0085] 1. Genomic DNA Extraction

[0086] Collect human peripheral blood, use Tiangen blood extraction kit to extract whole genome gDNA, measure DNA concentration with Nanodrop and Qubit3.0 instrument, record the corresponding concentration and the ratio of 260 / 280 and 260 / 230.

[0087] 2. Long fragment PCR amplification

[0088] Using the whole genome gDNA extracted above as a template, all PKD1 genes were amplified according to the primer pairs in Table 1 below, the reaction systems in Table 2 and Table 3, and the amplification programs in Table 4 and Table 5. In the primer names in Table 1, F represents the upstream primer (forward primer), and R represents the downstream primer (reverse primer). The kit used for long fragment PCR amplification is KFX-201 (200U×1), which consists of KOD FX Noe (1.0U / μL), 2×PCR Buffer for KOD FX Neo, 2mM dNTPs, manufacturer: TOYOBO. Reaction system 1 in Table 2 is suitable for amplific...

Embodiment 2

[0102] Embodiment 2 library construction

[0103] 1. Purification of long fragment PCR products

[0104] PCR products were purified using Yisheng or Novizan DNA purification magnetic beads 1.0×sample volume, washed twice with 80% ethanol, and 30 μL Nuclease-free ddH 2 O was eluted, and its concentration was determined by the Qubit dye method.

[0105] 2. The purified product is used for library construction with Yisheng library construction kit

[0106] (1) DNA fragmentation: 120 ng of purified PKD1 four fragments were taken separately for use.

[0107] Use Yisheng rapid fragmentation / end repair / A tail addition module reagents to prepare a DNA fragmentation reaction system according to Table 6, and perform the PCR reaction procedure in Table 7 after the preparation is completed.

[0108] Table 6 DNA fragmentation reaction system

[0109] Reagent name Volume (μL) Purified product DNA (120ng) x Smearase Mix 10 Nuclease-free ddH 2 o

(50-x) ...

Embodiment 3

[0129] Embodiment 3 data analysis

[0130] First, the original fastq file of the PKD1 gene (fastq file: the data returned by sequencing, mainly sequence information and corresponding quality value) is filtered to remove the data with poor quality, and then compared with the pseudogene locus library to detect each The pseudogene-specific sites of the amplicon library in the four amplicon regions respectively. If a pseudogene-specific site is detected, the ratio of the pseudogene bases in the site to the coverage depth of all bases is calculated, which is called The pseudogene frequency at that locus is calculated as the average of the pseudogene frequencies for all pseudogene-specific loci within each amplicon.

[0131] The results of pseudogene-specific site analysis are shown in Table 12, which is the detected pseudogene-specific site information in different amplicon library data.

[0132] Table 12 Pseudogene-specific site analysis results

[0133]

[0134] As shown in th...

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Abstract

The invention relates to the field of genetic disease gene detection, in particular to a PCR primer group for amplifying a PKD1 gene. The PCR primer group comprises one or more pairs in a first primerpair, a second primer pair, a third primer pair and a fourth primer pair. According to the primer group disclosed by the invention, the length of an amplicon covering an exon No.1 is increased, stable amplification of an exon No.1 region is successfully realized, and an amplification product covers all exon regions and most of intron regions of PKD1; a PKD1 gene sequence is specifically obtained,and a pseudogene sequence of PKD1 cannot be completely amplified; and under the condition that pseudogene interference is completely eliminated, the variation of the PKD1 gene, including known variation and unknown variation, can be detected more accurately.

Description

technical field [0001] The invention relates to the field of genetic disease gene detection, in particular to a primer set and a kit for amplifying PKD1 gene. Background technique [0002] Polycystic kidney (polycystic kidney), also known as Potter (I) syndrome, Perlmann syndrome, congenital renal cystic neoplastic disease, cystic kidney, bilateral renal hypoplasia syndrome, etc., is a relatively common genetic disease. The main manifestations are asymmetry in the progress of renal lesions on both sides, with differences in size. In the late stage, the two kidneys can occupy the entire abdominal cavity, and there are many cysts on the surface of the kidneys, making the kidneys irregular and uneven, eventually leading to end-stage renal disease. Polycystic kidney disease can be divided into autosomal dominant (adult type) polycystic kidney disease (autosomal dominant polycystic kidney disease, ADPKD) and autosomal recessive (infantile) polycystic kidney disease (autosomal rec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12Q1/6883C12Q1/6869C12N15/11
CPCC12Q1/6883C12Q1/6869C12Q2600/156C12Q2531/113C12Q2535/122
Inventor 杨敬敏朱学萍王彬唐嘉婕高鹏飞林健
Owner 上海韦翰斯生物医药科技有限公司
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