Immune chromatography test strip for detecting cystic echinococcosis and alveolar echinococcosis and preparation method
A technology for alveolar echinococcosis and cystic echinococcosis, which is applied in the field of bioengineering, can solve the problems of complex detection methods for cystic echinococcosis and alveolar echinococcosis, and the inability to diagnose early, and achieve easy industrial production, Low cost, high sensitivity and specificity
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Embodiment 1
[0050] An immunochromatographic test strip for detecting cystic echinococcosis and alveolar echinococcosis of the present invention includes a backboard 8, and one end of the upper side of the backboard 8 is provided with a sample pad 1, and the The other end of the upper side of the backboard 8 is provided with an absorbent pad 4, and a cellulose film 3 is arranged between the sample pad 1 and the absorbent pad 4, and the absorbent pad 4 and the cellulose membrane 3 are tightly connected , a gold standard pad 2 is arranged between the sample pad 1 and the cellulose membrane 3, the sample pad 1, the gold standard pad 2 and the cellulose membrane 3 are tightly connected, and the A quality control line 7 is set on the cellulose membrane 3 away from the end of the gold standard pad 2, and a first detection line 6 and a second detection line are set on the cellulose membrane 3 between the quality control line 7 and the gold standard pad 2 5. The first detection line 6 is composed ...
Embodiment 2
[0054] Example 2 Preparation of immunochromatographic test strips for detecting cystic echinococcosis and alveolar echinococcosis
[0055] 1. Preparation of purified crude antigen of cystic echinococcosis
[0056] Take fresh goat liver cyst fluid from Xinjiang, centrifuge at 1000g for 30min, suck the supernatant into a dialysis bag, dialyze overnight at 4°C with 5mM acetic acid buffer solution of pH 5.0, centrifuge at 50000g for 30min, discard the supernatant to remove albumin . The precipitate was dissolved in 0.2M PBS with pH 8.0, saturated ammonium sulfate was added to 40%, and the precipitated globulin was removed by centrifugation to obtain the crude antigen of purified cyst fluid.
[0057] 2. The recombinant alveolar echinococcosis antigen Em18 was prepared as follows
[0058] 2.1 Cloning and transformation of the target gene
[0059]The protoscole of Echinococcus multilocularis from natural infection in sheep liver was collected in Xinjiang. The total RNA of the pro...
Embodiment 3
[0090] Embodiment 3, the preparation of the immunochromatography test strip of the immunochromatography kit detecting cystic echinococcosis and alveolar echinococcosis
[0091] The colloidal gold-labeled detection probe was prepared with goat anti-human IgG purchased from Shanghai Yeli Biotechnology Co., Ltd., and the quality control line was coated with rabbit anti-goat IgG purchased from Jiening Biotechnology Co., Ltd. The other steps were the same as in Example 1.
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