Multiplex Ligation Probe Amplification Detection Kit, Primers and Probes for Simultaneous Detection of Five Bovine Disease Viruses
A technology for bluetongue virus and bovine viral diarrhea, which is applied in the field of inspection and quarantine, and can solve the problems of difficult differential diagnosis of epidemic diseases, long time, restrictions, etc.
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Embodiment 1
[0070] Embodiment 1, preparation and use of kit
[0071] 1. The composition of the kit:
[0072] (1) MLPA buffer, purchased from The MRC-Holland Company, which includes KCl, Tris-HCl, EDTA and PEG-6000, pH 8.5.
[0073] (2) Probes, which include long and short probes for bluetongue virus, bovine viral diarrhea virus, bovine enzootic leukemia virus, bovine infectious rhinotracheitis virus and foot-and-mouth disease virus. The sequences of each probe are shown in Table 1, wherein, the 5' ends of SEQ ID NO: 2, SEQ ID NO: 4, SEQ ID NO: 6, SEQ ID NO: 8 and SEQ ID NO: 10 are phosphorylated; the concentration of each probe 1uM, can be packed or mixed together;
[0074] (3) Ligating reaction solution, which includes: Ligase-65 buffer A and Ligase-65 buffer B, both purchased from MRC-Holland Company; the formula of the connecting reaction solution is shown in Table 3;
[0075] (4) PCR reaction solution, which includes universal primers P1 and P2 as shown in the sequence table SEQ ID...
Embodiment 2
[0109] Embodiment 2, the sensitivity test of kit
[0110] 1. Materials
[0111] The inactivated bluetongue virus, bovine viral diarrhea inactivated virus, and bovine infectious rhinotracheitis inactivated virus are all preserved in the laboratory. The inactivated bovine endemic leukemia virus is provided by the China Veterinary Drug Administration. The O-type foot-and-mouth disease inactivated Viruses were provided by Lanzhou Veterinary Research Institute, Chinese Academy of Agricultural Sciences.
[0112] 2. Method
[0113] 1) Preparation of recombinant plasmid DNA in vitro
[0114] Preparation of bluetongue virus NS3 gene-positive recombinant plasmid: clone bluetongue virus NS3 gene, reclaim the PCR amplification product, the length is 492bp, connect with pGEM-T vector (purchased from PromeGA company), transform JM109 competent cells, The plasmid DNA was extracted by alkaline lysis method, and the positive recombinant plasmid of bluetongue virus NS3 was obtained after ide...
Embodiment 3
[0130] Embodiment 3, the specificity test of kit
[0131] 1. Materials
[0132] Table 5 Viruses and nucleic acids used in the research process of specificity test
[0133] Virus
source
bluetongue virus
The lab saves
bovine infectious rhinotracheitis virus
The lab saves
bovine viral diarrhea virus
The lab saves
[0134] bovine enzootic leukemia virus
Provided by China Veterinary Drug Administration
Type O foot and mouth disease inactivated virus
Lanzhou Veterinary Research Institute
[0135] 2. Method
[0136] Use any set of probes from bluetongue virus, bovine viral diarrhea virus, bovine enzootic leukemia virus, bovine infectious rhinotracheitis virus and foot-and-mouth disease virus to detect the nucleic acids of the other four viruses by MLPA respectively, to verify the specificity of the method.
[0137] 3. Results
[0138] Using any set of probes in the five viruses for MLPA detection can...
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