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A kind of ion exchange chromatography extraction method of abalone muscular dystrophy virus

A technology of ion exchange chromatography and abalone muscular dystrophy, which is applied in the field of ion exchange chromatography extraction of abalone muscular dystrophy virus, can solve the problems of limited sample processing capacity, inability to expand production, low virus purity, etc., and achieve convenient large-scale Sample preparation, shortened separation time, low cost effect

Active Publication Date: 2018-05-08
SOUTH CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One of the technical bottlenecks restricting the further study and application of this virus is the extraction method.
The existing extraction methods all use ultracentrifugation, but its sample processing capacity is limited, and it is only limited to small-scale use in laboratories, and cannot be expanded for production
At the same time, the purity of the extracted virus is not high, which limits further downstream applications

Method used

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  • A kind of ion exchange chromatography extraction method of abalone muscular dystrophy virus
  • A kind of ion exchange chromatography extraction method of abalone muscular dystrophy virus
  • A kind of ion exchange chromatography extraction method of abalone muscular dystrophy virus

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Extraction of abalone muscular dystrophy virus

[0032] (1) Take 10g of virus-infected abalone tissues (all tissues except gonads), and grind them into powder under liquid nitrogen environment.

[0033] (2) Add 100mL SB buffer solution to the abalone tissue sample powder, and homogenize fully to obtain a homogenate. Among them, the pH of SB buffer is 7.5, and every 100ml contains 0.2M NaCl, 50mM Tris-HCl, 5mM CaCl 2 , 5 mM MgCl 2 .

[0034] (3) Centrifuge the homogenate twice with a common high-speed refrigerated centrifuge under the following conditions: centrifuge at 12,000 rpm for 30 min at 4°C, and collect the supernatant. The obtained supernatant was centrifuged at 10° C. at 40,000 rpm for 1 hour using an ultracentrifuge, and the supernatant was discarded. The obtained precipitate was the crude extract of abalone muscular dystrophy virus. The pellet was fully suspended with 10 ml of buffer A, which was 20 mM Tris, pH 8.0, to obtain a resuspension. The resu...

Embodiment 2

[0038] (1) Take 9g of virus-infected abalone tissues (all tissues except gonads), and grind them into powder under liquid nitrogen environment.

[0039](2) Add 100mL SB buffer solution to the abalone tissue sample powder, and homogenize fully to obtain a homogenate. Among them, the pH of SB buffer is 7.5, and every 100ml contains 0.15M NaCl, 45mM Tris-HCl, 4mM CaCl 2 , 4mM MgCl 2 .

[0040] (3) Centrifuge the homogenate twice with a common high-speed refrigerated centrifuge under the following conditions: centrifuge at 11,000 rpm for 25 minutes at 4°C, and collect the supernatant. The obtained supernatant was centrifuged at 10° C. at 30,000 rpm for 1.5 h in an ultracentrifuge, and the supernatant was discarded. The obtained precipitate was the crude extract of abalone muscular dystrophy virus. The pellet was fully suspended with 11 ml of buffer A, which was 25 mM Tris, pH 8.0, to obtain a resuspension. The resulting suspension was filtered with a 0.22um filter.

[0041] (...

Embodiment 3

[0044] (1) Take 10g of virus-infected abalone tissues (all tissues except gonads), and grind them into powder under liquid nitrogen environment.

[0045] (2) Add 100mL SB buffer solution to the abalone tissue sample powder, and homogenize fully to obtain a homogenate. Among them, the pH of SB buffer is 7.5, and every 100ml contains 0.3M NaCl, 55mM Tris-HCl, 6mM CaCl 2 , 6mM MgCl 2 .

[0046] (3) The homogenate was centrifuged twice in an ordinary high-speed refrigerated centrifuge under the following conditions: centrifuge at 13,000 rpm for 20 min at 4°C, and collect the supernatant. The obtained supernatant was centrifuged at 10° C. at 25,000 rpm for 2 hours in an ultracentrifuge, and the supernatant was discarded. The obtained precipitate was the crude extract of abalone muscular dystrophy virus. The pellet was fully suspended with 10 ml of buffer A, which was 20 mM Tris, pH 8.0, to obtain a resuspension. The resulting suspension was filtered with a 0.22um filter.

[00...

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Abstract

The invention discloses an ion exchange chromatographic extraction method for abalone muscular dystrophy virus, which comprises the following steps: (1) under a liquid nitrogen environment, the virus-infected abalone tissue sample is ground into powder; (2) the abalone tissue sample powder is Add SB buffer, then homogenize to obtain the homogenate; (3) centrifuge the homogenate, discard the supernatant, and resuspend the precipitate with 15-25mM Tris (Tris) solution to obtain a resuspension , membrane filtration, standby; (4) the ion-exchange column on the gained resuspension carries out ion-exchange chromatography, is equilibration buffer A with Tris solution and sodium chloride The mixed solution is eluent B for elution, the eluate containing virus is collected, then centrifuged, and the supernatant is discarded, and the obtained precipitate is abalone muscular dystrophy virus. The method can effectively separate the abalone muscular dystrophy virus and has low cost.

Description

technical field [0001] The invention relates to an extraction method of abalone virus, in particular to an ion exchange chromatography extraction method of abalone muscular dystrophy virus. Background technique [0002] Abalone, commonly known as abalone, belongs to the mollusk Gastropoda, is a kind of shellfish and occupies an important position in the marine ecosystem. Abalone is a traditional delicacy of the Chinese nation and an important marine cultured species in my country with high nutritional value. Viruses or phages widely exist in various organisms such as abalone, and their existence can regulate the intestinal population of the host, balance the metabolic relationship between the host and its symbiotic microorganisms, and control the occurrence of diseases. [0003] In recent years, a mysterious abalone muscular dystrophy virus has been found in farmed abalone in China. Its shape and size are unknown, and the sequenced genome has very low similarity with all c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12N7/00
Inventor 姜敬哲王江勇何健谷露
Owner SOUTH CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI