Monoclonal antibody of immunoglobulin of anti lymphocyst vitos of Pacific fluke, and preparation method
A technology of lymphocyst virus and immunoglobulin, which is applied to the monoclonal antibody of flounder against lymphocyst virus immunoglobulin and its preparation, and the improvement of immunology application technology, which can solve the problem that virus infection is difficult to detect and the host has not been studied Issues such as effective drugs for cells to achieve novel effects of design
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Embodiment 1
[0027] Development of monoclonal antibody against lymphocyst virus immunoglobulin in flounder
[0028] 1. Antigen preparation
[0029] (1) Preparation of flounder lymphocyst virus
[0030] ① Take the diseased flounder, first use 70% alcohol cotton ball to disinfect the affected part, then cut off the cyst with a sterilized scalpel blade, add appropriate amount of quartz sand and TNE (50mM Tris, 00mM NaCl, 1mM EDTA, pH7.4) buffer solution, homogenate;
[0031] ② Centrifuge the homogenate (4°C, 500g, 20min), and take the supernatant;
[0032] ③ Centrifuge the supernatant (4°C, 1800g, 20min), and take the supernatant;
[0033] ④ Make 30% (W / W) sucrose solution from the supernatant and sucrose, centrifuge at 78500g for 120min at 4°C, discard the supernatant;
[0034] ⑤ Add TNE to the precipitate to 1ml, mix well, place gently on top of the sucrose gradient solution (37%, 40%, 47%, 52%, 57%, 62%), centrifuge at 78500g for 120min at 4°C;
[0035] ⑥ Aspirate the virus band in the ...
Embodiment 2
[0085] The indirect ELISA identification of monoclonal antibody of the present invention:
[0086] (1) Coating antigen: Lymphocyst virus was diluted 1:10 with carbonate coating solution (pH9.6), added to 96-well microtiter plate (50 μl / well), and coated overnight at 4°C;
[0087] (2) Aspirate the coating solution, wash with PBST, each time for 5min, and wash three times;
[0088] (3) 200 μl of 3% bovine serum albumin (with PBS) was added to each well to block for 1 hour at 37°C;
[0089] (4) Wash three times with method ②;
[0090] (5) Add flounder antiserum (diluted 1:10) 50 μl to each well, and incubate at 37°C for 2 hours;
[0091] (6) Wash three times with method ②;
[0092] (7) Add the culture supernatant of the hybridoma cells screened and cloned above as the primary antibody to the microtiter plate at 50 μl per well, and incubate in a 37°C incubator for 1 hour;
[0093] (8) Wash three times with method ②;
[0094] (9) Alkaline phosphatase-labeled goat anti-mouse Ig...
Embodiment 3
[0099] Identification of the transfer immunoblotting method of the monoclonal antibody of the present invention:
[0100] (1) Sodium dodecyl sulfate-polyacrylamide gel electrophoresis:
[0101] ① Add the extracted flounder immunoglobulin to the sample buffer solution containing sodium dodecylsulfonate in equal proportions, and boil in boiling water for 3-5 minutes;
[0102] ②Put the sample treated in ① into the sample well, add 10 μl of sample into each well, under constant current condition, use low current (30-40mA) at the beginning, after the sample is concentrated into a line in the stacking gel, Increase the current (50-70mA), electrophoresis until the bromophenol blue indicator reaches the bottom edge, then stop the electrophoresis and take out the gel;
[0103] ③ Cut a piece of nitrocellulose membrane (pore size 0.22 μm) with the same size as the electrophoresis gel and use the electrotransfer buffer (electrotransfer buffer: 25mmol / L Tris-Base, 192mmol / L glycine, 20% m...
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