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Mycoplasma genitalium nucleic acid real-time fluorescence PCR detection primer, probe and kit

A technology of Mycoplasma genitalium and detection kit, which is applied in the determination/inspection of microorganisms, biochemical equipment and methods, DNA/RNA fragments, etc., can solve the problems of false positive detection of MG, no practicality, etc.

Inactive Publication Date: 2021-07-30
北京华诺奥美基因生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In 2016, the "Expert Consensus on the Diagnosis and Treatment of Mycoplasma Genitalium Infection" pointed out: In terms of serology, Mycoplasma genitalium and Mycoplasma pneumoniae have many cross-reactive antigenic determinants, although various serological testing methods such as agglutination reaction and complement fixation can be used to detect Serological changes of Mycoplasma genitalium, but because Mycoplasma pneumoniae may appear in the genitourinary tract, false positives may occur in the detection of MG, and it is not practical in clinical work

Method used

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  • Mycoplasma genitalium nucleic acid real-time fluorescence PCR detection primer, probe and kit
  • Mycoplasma genitalium nucleic acid real-time fluorescence PCR detection primer, probe and kit
  • Mycoplasma genitalium nucleic acid real-time fluorescence PCR detection primer, probe and kit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Development of real-time fluorescence quantitative PCR kit for mycoplasma genitalium nucleic acid

[0028] According to bibliographical reports, the present invention finally selects and designs primer probes for the MgPa gene region of Mycoplasma genitalium, selects 10 kinds of Mycoplasma genitalium MgPa operon full-lengths in NCBI database and carries out sequence comparison, and designs primer probes in its conserved regions, thereby ensuring A pair of primers and a probe can detect all strains of Mycoplasma genitalium, and they are compared by BLSAT to ensure that the primer probe can only be compared to Mycoplasma genitalium, but not to other pathogenic bacteria.

[0029] At the same time, in this embodiment, the human RNaseP gene was used as an internal reference gene to design specific primers and probes.

[0030] Primers and probes in the present invention are as follows:

[0031] a) Amplification primers and probes for Mycoplasma genitalium MG (conserved regio...

Embodiment 2

[0058] accuracy:

[0059] The kit described in Example 1 was used to detect 3 positive vaginal swabs from clinics diagnosed as Mycoplasma genitalium infection, as shown in Table 2, the results were all positive, and the positive coincidence rate was 100%.

[0060] Table 2 Test results of clinical samples

[0061]

[0062] specificity:

[0063] The kit described in Example 1 was used to detect 13 kinds of pathogenic bacteria such as Mycoplasma pneumoniae, Ureaplasma urealyticum, Mycoplasma hominis, and Chlamydia trachomatis. As shown in Table 3, the test results were all negative, and the coincidence rate was 100%.

[0064] Table 3 Test results of 9 kinds of pathogenic bacteria

[0065]

[0066]

[0067] Repeatability:

[0068] The kit described in Example 1 was used to detect 2 self-built positive enterprise reference products, each sample was repeated 10 times, and the coefficient of variation (CV, %) of the test result Ct value was ≤ 5%.

[0069] The formula for...

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Abstract

The invention discloses a mycoplasma genitalium nucleic acid real-time fluorescence PCR detection primer, a probe and a kit. The kit comprises an amplification reaction solution, a mycoplasma genitalium nucleic acid detection solution, a positive reference substance and a negative reference substance, wherein the mycoplasma genitalium nucleic acid detection liquid comprises specific primers and probes aiming at mycoplasma genitalium and a human RNase P gene, the sequences of the primers aiming at the mycoplasma genitalium are as shown in SEQ ID NO.1 and SEQ ID NO.2, and the sequence of the probe aiming at the mycoplasma genitalium is as shown in SEQ ID NO.3. According to the primer, the probe and the kit for real-time fluorescence PCR detection of the mycoplasma genitalium, provided by the invention, the mycoplasma genitalium can be rapidly, accurately and sensitively detected, the repeatability of an experimental result is good, the precision is high, the detection time period is short, and the detection can be completed within 70 minutes as short as possible. Therefore, the detection time is greatly saved, and the clinical diagnosis efficiency can be accelerated.

Description

technical field [0001] The invention relates to the technical field of biological detection, in particular to a real-time fluorescent PCR detection primer, probe and kit for mycoplasma genitalium nucleic acid. Background technique [0002] Mycoplasma genitalium (Mycoplasma genitalium, MG) belongs to Mollusca class, Mycoplasma order, Mycoplasma family, its genome size is 580kb, is the smallest known self-replicating bacteria, no cell wall, Gram-negative. MG is one of the pathogens that cause sexually transmitted diseases, causing non-gonococcal urethritis (NGU) in men, cervicitis, endometritis and pelvic inflammatory disease in women, and can lead to ectopic pregnancy, Infertility and other adverse outcomes, and the infection of Mycoplasma genitalium may promote the transmission and development of HIV virus. Mycoplasma genitalium has very important clinical significance. [0003] The 2018 British Guidelines for the Treatment of Mycoplasma Genitalium Infection pointed out th...

Claims

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Application Information

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IPC IPC(8): C12Q1/689C12Q1/6851C12Q1/10C12N15/11
CPCC12Q1/689C12Q1/6851C12Q2600/166
Inventor 杨莹莹魏星
Owner 北京华诺奥美基因生物科技有限公司
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