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Primer group and kit for simultaneously amplifying 34 human STR gene loci and application of primer group and kit

A gene locus and primer set technology, applied in the field of molecular genetics, can solve the problems of time-consuming, inconvenient use by public security, etc.

Pending Publication Date: 2021-05-28
百特元生物科技(北京)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is extremely inconvenient for the public security to use it. To use more loci to determine criminal suspects, it usually requires multiple kits to be used in combination, which also takes more time.

Method used

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  • Primer group and kit for simultaneously amplifying 34 human STR gene loci and application of primer group and kit
  • Primer group and kit for simultaneously amplifying 34 human STR gene loci and application of primer group and kit
  • Primer group and kit for simultaneously amplifying 34 human STR gene loci and application of primer group and kit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0113] Direct multiplex amplification was performed on two hairs from suspected father and son to detect 34 loci. The amplification method adopts the method of direct amplification: take a section of hair with hair follicles and put it directly into the amplification system so that the hair follicles are completely immersed in the liquid. The amplification procedure adopts the standard amplification procedure of the present invention, and the amplification instrument adopts ABI Proflex PCR instrument, genetic analyzer adopts 3500xl genetic analyzer, analysis software adopts GeneMapper-ID-X analysis software. The operation steps of this embodiment are as follows:

[0114] ①Use scissors to cut the hair short at 0.5cm above the hair follicle, and put the short hair with the hair follicle into a 200μl PCR tube.

[0115] ②A 10 μl amplification system was prepared according to the standard reaction system of the present invention: 2 μl of primer mixture, 4 μl of reaction premix, an...

Embodiment 2

[0123] Embodiment 2: the application of kit of the present invention in forensic medicine

[0124] The invention is mainly used in the field of forensic medicine for the construction of the DNA database of criminals and identification of the identity of criminal suspects. The national forensic DNA database is a national DNA database of criminals established by the Ministry of Public Security of my country. Now the database has exceeded 50 million data, and it is the main tool for the public security system to detect cases. The database is usually built by the method of direct amplification and detection of blood samples. The identification of illegal and criminal suspects is usually complicated, and the method of amplification and detection after DNA extraction is used for detection. The invention can take into account two different inspection materials, and facilitates the construction of a national DNA database and identification of the identity of criminal suspects. The de...

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Abstract

The invention provides a primer group and a kit for simultaneously amplifying 34 human STR gene loci and application of the primer group and the kit, and belongs to the technical field of molecular genetics. In the invention, the 34 STR gene loci comprise 29 autosomal STR gene loci, one Y chromosome STR gene locus and 4 sex identification STR gene loci. According to the invention, 34 STR gene loci can be simultaneously amplified in one reaction, 20 core gene loci and 10 preferable gene loci specified by Ministry of Public Security are included, all loci of mainstream kits in the current market are included, and meanwhile, 5 gender identification gene loci are also included; and the risk of gender identification errors caused by Y chromosome deletion can be effectively prevented. 34 STR gene loci are combined, so that the method has the characteristics of high individual recognition capability and high non-father exclusion rate.

Description

technical field [0001] The invention relates to the technical field of molecular genetics, in particular to a primer set, a kit and an application thereof for simultaneously amplifying 34 human STR loci. Background technique [0002] STR (short tandem repeats, short tandem repeats), also known as microsatellite sequence, is a short tandem repeat sequence widely present in human genome DNA, and the repeat unit is 2 to 6 nucleotides. Due to its high polymorphism and stability, and compared with AMP-FLP and VNTR genotyping methods, the amplified product length of STR genotyping method is much smaller (less than 500bp), so the requirement for template quality is lower , even degraded DNA templates can be analyzed. In addition, STR typing is applicable to DNA purified by various DNA purification methods, but the amount of DNA obtained by these purification methods is often not enough for Southern blot analysis. In view of the above characteristics, STR typing technology has bee...

Claims

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Application Information

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IPC IPC(8): C12Q1/6888C12Q1/686C12N15/11
CPCC12Q1/6888C12Q1/686C12Q2600/156
Inventor 冉凌飞蒿杰刘甲乾路瑶赵亚楠
Owner 百特元生物科技(北京)有限公司
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