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Use of Prevotella spp. in identifying and/or differentiating individuals of different ethnic groups

A technology of Prevotella and Prevotella intermedia is applied in the application field of Prevotella in identifying and/or distinguishing individuals of different ethnic groups, and can solve the problem of undisclosed applications of Prevotella.

Active Publication Date: 2021-05-04
GENERAL HOSPITAL OF PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The prior art does not disclose the use of Prevotella in identifying and / or differentiating ethnic groups

Method used

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  • Use of Prevotella spp. in identifying and/or differentiating individuals of different ethnic groups
  • Use of Prevotella spp. in identifying and/or differentiating individuals of different ethnic groups
  • Use of Prevotella spp. in identifying and/or differentiating individuals of different ethnic groups

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Example 1 Using the relative abundance of Prevotella in individual feces to identify a subject as Tibetan or Han

[0063] (1) determining the abundance of said microbial marker in said individual's stool sample:

[0064] 1) Collect the feces of the individual to be tested, and extract the DNA of the microorganisms in the feces:

[0065] Collect the feces of the individual to be tested, draw 1000ul of CTAB lysate into a 2.0ml EP tube, add lysozyme, add about 500ul of the sample into the lysate, put it in a 65°C water bath, and mix it upside down several times during the process to fully lyse the sample. Centrifuge to get the supernatant, add phenol (pH8.0): chloroform: isoamyl alcohol (25:24:1), mix by inverting, and centrifuge at 12000rpm for 10min. Take the supernatant, add chloroform: isoamyl alcohol (24:1), mix by inverting, and centrifuge at 12000rpm for 10min. Pipette the supernatant into a 1.5mL centrifuge tube, add isopropanol, shake up and down, and precipitat...

Embodiment 2

[0078] Example 2 Feasibility identification of the ethnicity of the subject using the relative abundance of Prevotella

[0079] Study population:

[0080] The subjects were male soldiers serving in China. The experimental group consisted of 128 Tibetan male soldiers accustomed to plateaus above 3,500 meters above sea level. The control group consisted of 128 plain Han soldiers who were age-matched with Tibetan soldiers. Strictly control the two groups of people to have the same mixed diet of Chinese troops, maintain the same training environment and training intensity at an altitude of 3500 meters, quit smoking and drinking, and last for 3 months. Soldiers with chronic inflammatory diseases, oral antibiotics, acute infections, and gastrointestinal disorders were excluded.

[0081] method:

[0082] (1) determining the abundance of said microbial marker in said individual's stool sample:

[0083] 1) Collect the feces of the individual to be tested, and extract the DNA of the ...

Embodiment 3

[0099] Example 3 Constructing a ROC curve to compare and evaluate the ability of the relative abundance of bacteria to identify plateau Han population and Tibetan population

[0100] The receiver operating curve (ROC) method was used for verification, and the relative abundance of Prevotella in the feces of the subjects was used to judge its ability to identify the plateau Han population and the Tibetan population. Differences were compared using the Mann-Whitney test because the samples were not normally distributed. The ROC curve was drawn to evaluate the sensitivity and specificity of the relative abundance of the bacterial genera in the differential diagnosis of the plateau Han population and the Tibetan population, and the cutoff value was calculated. P<0.05 was considered statistically significant, and the SPSS22.0 software package was used for statistical processing.

[0101] The result is as figure 2 shown by figure 2 The results showed that the ROC curve showed th...

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Abstract

The present invention provides an application of a microbial marker in identifying and / or distinguishing individuals of different nationalities, and the microbial marker is Prevotella genus.

Description

technical field [0001] The invention belongs to the field of biological identification and / or differentiation, and specifically relates to the application of Prevotella in identifying and / or distinguishing individuals of different nationalities. Background technique [0002] There are a large number of commensal flora in the human intestinal tract, the number of which exceeds 1000 trillion, which is about 10 times the total number of human cells. At the same time, the number of microbial genes in the gut is about 3 million, which is about 100 times the number of genes in the human genome. Such a large number of genes can help microorganisms adapt to the changing environment and form an inseparable symbiotic relationship with the human body. Residents with different genetic backgrounds and living habits have great differences in the composition of intestinal flora. For example, Bacteroides is the most abundant and inter-individual bacterial genus in the intestines of Western ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12Q1/06C12Q1/689C12R1/01
Inventor 何昆仑刘继轩赵晓静高晓健贾志龙张泽宇姜辉源朱雨刘镕珲
Owner GENERAL HOSPITAL OF PLA
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