Specific detection primers and detection liquid phase chip for KLK3 gene mutation
A detection solution and specificity technology, applied in the field of molecular biology, can solve problems such as difficult clinical detection and diagnosis, easy contamination of samples, complicated method operation, etc., and achieve the effects of avoiding uncertain factors, consistent detection results, and avoiding cross-reactions
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Embodiment 1
[0020] Embodiment 1 KLK3 gene mutation detection liquid chip mainly includes:
[0021] 3. ASPE Primers
[0022] Specific primer sequences were designed for wild-type and mutant types of five common genotypes of KLK3 gene, G11453A, G7670A, A9367C, T536C and A15G. ASPE primers consist of "tag sequence + specific primer sequence". ASPE primer sequences are shown in the table below:
[0023] Table 1 ASPE primer sequence of KLK3 gene (tag sequence + specific primer sequence)
[0024]
[0025]
[0026] Each ASPE primer consists of two parts, the 5' end is a specific tag sequence for the anti-tag sequence on the corresponding microsphere, and the 3' end is a mutant or wild-type specific primer fragment (as shown in Table 1 above). All ASPE primers were synthesized by Shanghai Sangon Bioengineering Technology Service Co., Ltd. Each synthesized primer was prepared into a stock solution of 100 pmol / mL with 10 mmol / L Tris Buffer.
[0027] 2. Microspheres coated with anti-tag s...
Embodiment 2
[0040] Example 2 Detection of samples using the KLK3 gene mutation detection liquid chip described in Example 1
[0041] The formula of described various solutions is as follows:
[0042] 50mM MES buffer (pH5.0) formula (250ml):
[0043]
[0044] 2×Tm hybridization buffer
[0045]
[0046] Store at 4°C after filtration.
[0047] ExoSAP-IT kit was purchased from US USB Company.
[0048] Biotin-labeled dCTP was purchased from Shanghai Sangon Bioengineering Technology Service Co., Ltd.
[0049] 1. Sample DNA extraction:
[0050] Refer to the relevant methods of DNA extraction in "Molecular Cloning" to obtain the DNA to be detected.
[0051] 2. PCR amplification of samples to be tested
[0052] Design 5 pairs of primers, multiplex PCR to amplify 5 target sequences containing five common genotypes of KLK3 gene G11453A, G7670A, A9367C, T536C and A15G respectively, the product sizes are 330bp, 296bp, 251bp, 445bp, 294bp The sequences (SEQ ID NO.31-40) are shown in Table ...
Embodiment 3
[0095] The liquid phase chip of embodiment 3 different ASPE primers is to the detection of KLK3 gene SNP site
[0096] 1. Design of liquid phase chip preparation (selection of Tag sequence and Anti-Tag sequence)
[0097] Taking the KLK3 gene G11453A, G7670A, T536C and A15G site mutation detection liquid chip as an example, the specific primer sequence of the 3' end of the ASPE primer was designed for the wild type and mutant type of G11453A, G7670A, T536C and A15G, respectively, and the ASPE primer 5 The Tag sequence at the 'end is selected from SEQ ID NO.1-SEQ ID NO.10. Correspondingly, the anti-tag sequence coated on the microspheres and complementary to the corresponding tag sequence is selected from SEQ ID NO.21-SEQ ID NO.30. The specific design is shown in the following table (Table 7). The synthesis of ASPE primers, microspheres coated with anti-tag sequences, amplification primers, detection methods, etc. are as described in Example 1 and Example 2.
[0098] Table 7 De...
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