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Multiple nucleic acid amplification product detection method and kit

A technology for multiple nucleic acid and amplification products, applied in the field of multiple nucleic acid amplification product detection methods and kits, can solve the problems of high equipment cost, high personnel requirements, and difficulty in early screening of grassroots on-site rapid inspections, so as to reduce false positives. Positive rate, improve accuracy, and ensure the effect of multiple detection capabilities

Pending Publication Date: 2021-05-28
SUNSHINE LAKE PHARM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the nucleic acid detection of multi-target pathogens in the market mainly uses multiplex PCR to achieve amplification. The corresponding detection techniques such as PCR probe method, multiplex amplification-hybridization, multiplex amplification-capillary electrophoresis, and multiplex amplification-mass spectrometry are only applicable to large hospitals. Large-scale medical institutions such as epidemic prevention and control centers are difficult to use for rapid on-site inspection at the grassroots level and early screening of pathogen epidemics due to high equipment costs, high operating environment, and high personnel requirements.

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  • Multiple nucleic acid amplification product detection method and kit
  • Multiple nucleic acid amplification product detection method and kit

Examples

Experimental program
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Effect test

Embodiment 1

[0103] Joint detection of SARS-COV-2 N and S genes based on multiple LAMP amplification

[0104] The LAMP primers used include two pairs of inner primers FIP-1 / BIP-1 and FIP-2 / BIP-2, two outer primers F3-1 / B3-1 and F3-2 / B3-2, and two pairs of loop primers LF-1 / LB-1 and LF-2 / LB-2, wherein the 5' ends of LF-1 and LB-1 are labeled with fluorescein isothiocyanate and biotin respectively, and the 5' ends of LF-2 and LB-2 The 5' end was labeled with fluorescein isothiocyanate and digoxigenin. The specific steps of the multiple nucleic acid amplification product detection method of the present embodiment include:

[0105] 1. Design the following primers for multiple LAMP amplification according to the N and S gene sequences of the new coronavirus, including: inner primers: FIP-1 / BIP-1 and FIP-2 / BIP-2; outer primers: F3-1 / B3-1 and F3-2 / B3-2, loop primers: LF-1 / LB-1 and LF-2 / LB-2, the primers in this example are derived from Chinese patent CN111270014A, in addition to LF-1 and The ...

Embodiment 2

[0118] Joint detection of sulfonamide resistance genes sul1, sul2 and sul3 based on multiple RPA amplification

[0119]1. Primer design and screening, according to the sul1, sul2 and sul3 gene sequences, design the following modified primers for multiple RPA amplification and test strip detection. The primers in this example are from the Journal of China Jiliang University, Volume 30, Issue 30 The paper "Research on the rapid detection of sulfonamide resistance genes by multiple RPA-LFD technology" and the primer design and screening were carried out according to the conditions described in the article. In addition, different modifications were made at the 5' ends of the upstream and downstream primers, including (5'-3 '):

[0120] sul-1-F1:Digoxin-AAGACGCTCGACGAGATTGTGCGGTTCTT;

[0121] sul-1-R1:Biotin-AATAGCGGAAGCCCCAACGCCGACTTCAGCT;

[0122] sul-2-F1:TAMRA-CATCGTCAACATAACCTCGGACAGTTTCTCG;

[0123] sul-2-R1:Biotin-GGTTGATAACTGTCGAGCGAGACGGGAATG;

[0124] sul-3-F1:FAM-GCC...

Embodiment 3

[0134] Joint detection of SARS-COV-2 N and S genes based on multi-system LAMP amplification

[0135] The LAMP primers used include 3 pairs of inner primers FIP-NC / BIP-NC, FIP-1 / BIP-1 and FIP-2 / BIP-2, 3 outer primers F3-NC / B3-NC, F3-1 / B3 -1 and F3-2 / B3-2, and 3 pairs of loop primers LF-NC / LB-NC, LF-1 / LB-1 and LF-2 / LB-2, in which 5 pairs of LF-1 and LB-1 The 'ends were labeled with fluorescein isothiocyanate and biotin respectively, and the 5' ends of LF-2 and LB-2 were labeled with fluorescein isothiocyanate and digoxin. The specific steps of the multiple nucleic acid amplification product detection method of the present embodiment include:

[0136] 1. Design the following primers for multi-system LAMP amplification based on the N and S gene sequences of the new coronavirus and the GAPDH gene sequence, including: Internal primers: FIP-NC / BIP-NC, FIP-1 / BIP-1 and FIP -2 / BIP-2; outer primers: F3-NC / B3-NC, F3-1 / B3-1 and F3-2 / B3-2, loop primers: LF-NC / LB-NC, LF-1 / LB -1 and LF-2 / L...

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Abstract

The invention belongs to the technical field of acid detection, and discloses a multiple nucleic acid amplification product detection method, which comprises: establishing an amplification reaction system containing a display agent, the amplification reaction system further comprising a sample to be detected, a primer and an amplification reagent; then interpreting an amplification result of the amplification reaction system through a chromogenic dye method; and judging whether test strip detection is carried out or not according to the interpreted amplification result. According to the method, a color developing dye detection method and test strip detection are combined, a color developing agent and different modified primers are added into a multiple nucleic acid amplification system, firstly, a nucleic acid amplification result is visually interpreted by utilizing a color developing reaction of the color developing agent, and whether a to-be-detected solution is successfully amplified or not is judged; and the detection of the target nucleic acid in the successfully amplified to-be-detected solution is completed through an immunochromatography test strip. Therefore, false positive samples in the positive samples can be removed, the false positive rate is reduced, the detection accuracy is improved, meanwhile, all the detection lines of the test strip can be used for detecting indexes, and the multiple detection capacity of an amplification system is guaranteed.

Description

technical field [0001] The invention relates to the technical field of nucleic acid detection, in particular to a detection method and a kit for multiple nucleic acid amplification products. Background technique [0002] The diagnosis of infectious diseases caused by pathogen infection often needs to be confirmed in combination with etiological examination. Multi-infection) pathogen detection often requires the use of multi-target joint detection. [0003] In the new coronavirus nucleic acid detection primers and probe sequences released by the Chinese Center for Disease Control and Prevention of Viral Diseases, it is stated that the target sequences of the new coronavirus detection kit are open reading frame 1ab (open reading frame, ORF1ab), nucleocapsid Protein (nucleoprotein, N) gene region; at the same time, the human gene should be used as an internal reference to monitor the effect of sample collection and extraction to avoid false negative results. However, using si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12Q1/6844C12Q1/70C12Q1/689C12R1/93
CPCC12Q1/6844C12Q1/701C12Q1/689C12Q2600/16C12Q2600/106C12Q2531/119C12Q2537/143C12Q2545/101C12Q2565/625C12Q2563/131C12Q2563/107Y02A50/30
Inventor 何清聪周侗王晶刘仁源陈立勇任青云
Owner SUNSHINE LAKE PHARM CO LTD