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Real-time fluorescent nucleic acid isothermal amplification detection kit for treponema pallidum 16s RNA, and special primer and probe thereof

A technology for constant temperature amplification detection and Treponema pallidum, which is applied in the field of biomedical detection technology, can solve the problems of cross-contamination of samples in experimental environment, can not meet detection sensitivity, increase detection cost, etc., achieves reduction of infection risk, easy automation and detection. The effect of increased sensitivity

Pending Publication Date: 2021-10-15
SHANGHAI RENDU BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the methods disclosed in the above-mentioned documents 1 and 2 are all based on the basic principle of fluorescent PCR, and temperature rise and fall and circulation are required during the PCR reaction process, so the required detection time is long and the efficiency is low. At the same time, a fluorescent quantitative PCR instrument is required. Increased detection cost; in addition, the reaction product of PCR is DNA, which is not easy to degrade, and it is easy to cause sample cross-contamination and pollution of the experimental environment; moreover, although the minimum detection sensitivity of Treponema pallidum in the above literature 1 and literature 2 can reach 400 ~500copies / ml, but still cannot meet the requirements of higher detection sensitivity

Method used

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  • Real-time fluorescent nucleic acid isothermal amplification detection kit for treponema pallidum 16s RNA, and special primer and probe thereof
  • Real-time fluorescent nucleic acid isothermal amplification detection kit for treponema pallidum 16s RNA, and special primer and probe thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0054] Example 1: Design of special primers and probes for detection of Treponema pallidum 16s RNA by real-time fluorescent nucleic acid constant temperature amplification

[0055] According to the Treponema pallidum nucleic acid sequence published in the Genbank database, the present inventor selects and determines a highly conserved sequence on the Treponema pallidum 16s RNA that is quite different from other similar pathogens as the detection sequence (the nucleotide sequence corresponding to DNA is such as SEQ ID Shown in NO: 1), primers and probes were designed according to the principles of primers and probes design, so as to perform real-time fluorescent nucleic acid constant temperature amplification detection on Treponema pallidum.

[0056] This embodiment has designed multiple groups of primers and probes altogether, wherein selects following two groups of primers and probes (group 1 and group 2) to Treponema pallidum positive control (detailed below) and negative con...

Embodiment 2

[0076] Example 2: Real-time fluorescent nucleic acid constant temperature amplification detection kit for Treponema pallidum 16s RNA

[0077] The kit for detecting Treponema pallidum 16s RNA provided in this example is a kit for detecting Treponema pallidum 16s RNA based on the principle of RNA nucleic acid constant temperature synchronous amplification detection, and specifically includes the following components:

[0078] (1) Viral nucleic acid extraction solution: used to extract and purify the Treponema pallidum nucleic acid in the sample, which contains 250-800mM HEPES, 4-10% lithium dodecyl sulfate (LLS), and 1-50 μM specific capture probe (SEQ ID NO:2), 50-500mg / L magnetic beads, 25-150pmol / mL first primer (SEQ ID NO:3);

[0079] (2) Detection solution a: it contains 10-50mM Tris, 5-40mM KCl, 10-40mM MgCl 2 , 1-20mM NTP, 0.1-10mM dNTPs, 1-10% PVP40, 250-750pmol / mL of the second primer (SEQ ID NO:4);

[0080](3) Detection solution b: it contains 10-50mM Tris, 5-40mM KC...

Embodiment 3

[0087] Embodiment 3: Real-time fluorescence nucleic acid isothermal amplification method for detecting Treponema pallidum 16s RNA

[0088] The method of this embodiment detects Treponema pallidum 16s RNA based on the RNA constant temperature synchronous amplification detection principle, which uses the kit provided in the above-mentioned embodiment 2 to detect whether the sample contains Treponema pallidum nucleic acid, and the specific operation steps are:

[0089] 3.1. Sample preparation

[0090] Get 250 μ L Treponema pallidum 16s RNA positive control respectively (described in embodiment 1, concentration is 10 5 copies / mL), 250 μL of negative control and 250 μL of the sample to be tested were respectively placed in sample processing tubes for standby;

[0091] 3.2. Nucleic acid extraction

[0092] (1) Add 100 μL to 800 μL of viral nucleic acid extraction solution (HEPES 500 mM, LLS 8%, specific capture probe (SEQ ID NO: 2) 15 μM, magnetic beads 150 mg / L, first primer (SEQ...

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Abstract

The invention discloses a real-time fluorescent nucleic acid isothermal amplification detection kit for treponema pallidum 16s RNA, and a special primer and a probe thereof, and belongs to the technical field of biomedical detection. The kit provided by the invention comprises a nucleic acid extracting solution, a detection solution a, a detection solution b and an SAT enzyme solution, the primers and the probes which are more suitable for treponema pallidum 16s RNA detection are optimally designed, and the components are added step by step in the detection process to perform step-by-step reaction, so that rapid and accurate detection of treponema pallidum 16s RNA can be realized, and the kit is high in sensitivity and high in sensitivity. And the amplification product RNA is easy to degrade and does not cause sample cross contamination and environmental pollution.

Description

technical field [0001] The invention belongs to the technical field of biomedical detection, in particular to a real-time fluorescent nucleic acid constant temperature amplification detection kit for Treponema pallidum 16s RNA and its special primers and probes, in particular to specific target capture technology and real-time fluorescent nucleic acid constant temperature amplification detection Primers, probes and related kits used in real-time fluorescent nucleic acid constant temperature amplification detection of treponema pallidum (TP) 16s RNA combined with Simultaneous Amplification and Test (SAT). Background technique [0002] Syphilis is an infectious disease caused by Treponema pallidum, which can be transmitted through direct sexual contact, mother-to-child transmission, or through blood transfusion, breast-feeding, and clothing and objects that syphilis patients come into contact with (such as surface attachments, drinking water, food, etc.) Or its saliva, etc., c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12Q1/689C12Q1/6844C12Q1/04C12N15/11C12R1/01
CPCC12Q1/689C12Q1/6844C12Q2561/113C12Q2563/107
Inventor 居金良崔振玲耿玥
Owner SHANGHAI RENDU BIOTECH
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