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x-str fluorescence amplification system, kit and application

A technology of X-STR and amplification system, which is applied in the field of X-STR fluorescence amplification system to achieve the effect of improving accuracy

Active Publication Date: 2022-02-22
SUZHOU MICROREAD GENETICS
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

The existing technology mainly detects a small number of STR sites on the X chromosome, and there are certain deficiencies in genetic polymorphism, individual recognition and detection accuracy. Therefore, it is necessary to develop an X-STR kit with high performance and strong individual recognition ability

Method used

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  • x-str fluorescence amplification system, kit and application
  • x-str fluorescence amplification system, kit and application
  • x-str fluorescence amplification system, kit and application

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Embodiment Construction

[0026] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0027] 1) Screening of X-STR loci:

[0028] The statistics of the genetic data of the 28 X-STRs screened by the present invention are shown in the results (Table 1).

[0029] Table 1: Statistical table of genetic data of 28 X-STRs used in the present invention

[0030]

[0031]

[0032] 2) Primer design:

[0033] The primers are designed using software such as Prime Premier5 and NCBI Blast. When designing primers, it should be ensured that the Tm value of each primer is within the range of (60±2)°C, and the amplification efficiency is close to that of the amplification product of each pair of primers. different eno...

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Abstract

The invention discloses an X-STR fluorescent amplification system, kit and application. The amplification system includes 29 pairs of primers corresponding to 28 X-STR sites and one Amel site on the X chromosome. The nucleotide The sequence is shown in SEQ ID NO.1‑58. The 28 STR sites in the X chromosome corresponding to the amplification system designed in the present invention include linkage groups of multiple X chromosomes, not only the number of detection sites is large, but also distributed in the short arm of the X chromosome, centromere Points and long arms, so it can effectively improve the detection accuracy, especially to better meet the high requirements of public security and judicial organs for X-STR detection applications.

Description

technical field [0001] The invention belongs to the technical field of biological detection, and in particular relates to an X-STR fluorescence amplification system, a kit and an application. Background technique [0002] Short tandem repeats (Short tandem repeats, STR) are currently the mainstream genetic markers used in forensic DNA typing research. Human genome STR (short tandem repeat sequence) is a DNA genetic marker formed by tandem repeats with a few bases as the core unit. The distinction between different races, different populations and even different individuals is through the difference in core unit sequence and repeat number, which also constitutes the genetic polymorphism of STR. In the genome, there is an STR site every 15-20kb on average, accounting for 10% of the genome, mostly in non-coding regions and introns, the repeat unit is 2-6bp, the number of repeats is 10-60 times, and the fragment size In 70 ~ 500bp, and was co-dominant inheritance according to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12Q1/6876C12Q1/6858C12N15/11
CPCC12Q1/6876C12Q1/6858C12Q2600/156
Inventor 于在亮杨凡张德露冯晓琴陈初光
Owner SUZHOU MICROREAD GENETICS
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