Composition for diagnosing hemorrhagic fever with renal syndrome, comprising seoul virus- and puumala virus- derived recombinant nucleocapsid protein and hantaan virus-derived recombinant glycoprotein, and diagnostic kit comprising same

A technology of nucleocapsid protein and hantavirus, applied in disease diagnosis, biological testing, biomaterial analysis, etc., can solve the problems of low sensitivity and specificity, low price, and low sensitivity, so as to improve diagnostic sensitivity and specific effects

Active Publication Date: 2019-06-14
IMMUNEMED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

EIA has the advantage of high sensitivity, but its disadvantages are low specificity, multiple pretreatment processes are required before diagnosis, and thus it takes a long time and requires special judgment equipment
The judgment time of the plate agglutination test is very short, but its disadvantage is low sensitivity and it is difficult to judge; the disadvantage of the test tube agglutination test is that the process is cumbersome, and the judgment is often blurred, which takes up to 2 hours
[0007] Dip-stick method can be applied to a variety of pathogens, and the price is low, but it has the disadvantages of low sensitivity and specificity
The lateral flow immunoassay (Lateral flow assay), also called a rapid diagnostic kit (rapid diagnostic kit), is a recently developed method because it can diagnose in a short time. It does not require pretreatment and can be judged by naked eyes within 15 minutes. , and is inexpensive, however, its limitation is that in order to use this method, it is necessary to ensure that specific antigens of specific pathogens

Method used

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  • Composition for diagnosing hemorrhagic fever with renal syndrome, comprising seoul virus- and puumala virus- derived recombinant nucleocapsid protein and hantaan virus-derived recombinant glycoprotein, and diagnostic kit comprising same
  • Composition for diagnosing hemorrhagic fever with renal syndrome, comprising seoul virus- and puumala virus- derived recombinant nucleocapsid protein and hantaan virus-derived recombinant glycoprotein, and diagnostic kit comprising same
  • Composition for diagnosing hemorrhagic fever with renal syndrome, comprising seoul virus- and puumala virus- derived recombinant nucleocapsid protein and hantaan virus-derived recombinant glycoprotein, and diagnostic kit comprising same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] [Example 1: Preparation of recombinant nucleocapsid protein derived from Seoul virus and Puumala virus]

[0083] (1) Gene cloning

[0084] The nucleocapsid protein coding gene derived from Seoul virus (SEQ ID NO:1; 357bp; 119aa) was connected with the nucleocapsid protein coding gene derived from Puumala virus (SEQ ID NO:2; 357bp; 119aa) to synthesize the whole nucleocapsid Capsid protein gene (714bp; 238aa) (Bioneer, Korea).

[0085] The cloned nucleocapsid protein gene and the pET-32a(+) vector were completely cut into the pBHA vector with restriction enzymes EcoRI and XhoI, and after electrophoresis was performed on 1.2% agarose gel, the QIAGEN gel recovery kit (gel elution kit ) (QUAGEN Inc, USA) for recovery.

[0086] Cut the band according to the expected size on the UV transilluminator (transilluminator) and move it to a microtube. After adding 100 μl of salt solution to each net weight of 0.1 g agarose gel, place it at 37 ° C for 20 minutes to make the gel co...

Embodiment 2

[0109] [Example 2: Preparation of recombinant glycoprotein derived from Hantavirus]

[0110] (1) Gene cloning

[0111] Based on the base sequence of the glycoprotein gene derived from Hantavirus, the antigenic part is selected and recombined to prepare a recombinant gene composed of the base sequence of SEQ ID NO:3. Specifically, 94aa (282bp) from 414aa (1,242bp) to 506aa (1,518bp) of Hantavirus glycoprotein and 236aa (708bp) from 773aa (2,319bp) to 1,009aa (3,027bp) were combined, and the overall synthesis was 330aa (990bp) recombinant glycoprotein gene (Bioneer, Korea).

[0112] The glycoprotein gene and the pET-32a(+) vector were completely cut into the pBHA vector with restriction enzymes NdeI and XhoI, electrophoresis was performed on a 1.2% agarose gel, and the QIAGEN gel extraction kit (QUAGEN Inc., USA) for recycling.

[0113] After cutting the band according to the expected size on the UV transilluminator, pipette it into a microtube, add 100 μl of salt solution pe...

Embodiment 3

[0135] [embodiment 3: make kit]

[0136] In order to confirm the effect of the renal syndrome hemorrhagic fever diagnostic agent of Seoul / Pumala virus nucleocapsid protein and Hantaan virus glycoprotein produced according to the above-mentioned Examples 1 and 2, a dispenser (dispenser) (KINEMATIC Automation) was used to produce Samples of diagnostic test strips ( figure 2 ).

[0137] Specifically, the test piece is composed of a reaction film, a sample pad, an absorbent pad, and a gold bonding pad (glass fiber). A product manufactured by Millipore was used for the reaction film, and plastic was attached to one side in order to prevent damage to the film. Three kinds of proteins were dripped into the reaction membrane.

[0138] One is to detect antibodies to the renal syndrome hemorrhagic fever virus present in the patient's serum, which will be mixed with antigenic proteins expressed from Escherichia coli or insect cells (Seoul / Pumala virus nucleocapsid protein, Hantaan vi...

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Abstract

An embodiment of the present invention provides a composition for diagnosing hemorrhagic fever with renal syndrome, comprising: a recombinant protein comprising a Seoul virus- and Puumala virus- derived nucleocapsid protein; and a Hantaan virus-derived recombinant glycoprotein.

Description

【Technical field】 [0001] The present invention relates to a diagnostic composition for hemorrhagic fever with renal syndrome comprising recombinant nucleocapsid protein derived from Seoul virus and Puumala virus and recombinant glycoprotein derived from Hantaan virus, and a diagnostic kit comprising the same 【Background technique】 [0002] Hemorrhagic fever with renal syndrome (HFRS) caused by Hantavirus (Hantavirus) is an acute febrile disease that produces 200,000 to 300,000 patients every year worldwide, and less than 5% of them die. In South Korea, more than a thousand patients occur among the public and soldiers every year, and it is classified as a third-class legal infectious disease. [0003] In addition to showing typical clinical features, hemorrhagic fever with renal syndrome has symptoms similar to those of influenza, or is mostly observed as a recessive infection, and has a high incidence in South Korea such as tsutsugamushi and leptospirosis. It is difficult t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/68G01N33/558
CPCG01N33/6893G01N2333/175G01N33/54387G01N2800/00
Inventor 金允源朴相珍金泳辰金索拉金太龙金恩叡崔恩智
Owner IMMUNEMED
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