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Application of dalbavancin in the preparation of drugs for inhibiting the combination of sars-cov-2 and ace2

A technology of dalbavancin and sars-cov-2s, applied in drug combinations, antiviral agents, glycopeptide components, etc., can solve the problem of effective drugs that do not block the new coronavirus S protein and ACE2

Active Publication Date: 2021-04-09
KUNMING INST OF ZOOLOGY CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is currently no effective drug that blocks the S protein and ACE2 of the new coronavirus

Method used

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  • Application of dalbavancin in the preparation of drugs for inhibiting the combination of sars-cov-2 and ace2
  • Application of dalbavancin in the preparation of drugs for inhibiting the combination of sars-cov-2 and ace2
  • Application of dalbavancin in the preparation of drugs for inhibiting the combination of sars-cov-2 and ace2

Examples

Experimental program
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Effect test

Embodiment 1

[0021]Drug virtual screening. The three-dimensional model is constructed according to the disclosed ACE2 protein structure, and the ACE2 three-dimensional structure is optimized using molecular dynamics simulation, and then the region of ACE2 and new crown virus s protein is selected (x: 42.43, Y: -1.51, Z: 122.69, R: 13.03) Virtual screening to find drugs that interfere with their combination. Screening the database to obtain a polypeptide drug for clinical approval to ensure that the later use of toxicity is low. For candidate drugs obtained by the previous (10%) of the selected ranking, the combination of molecular dynamics simulates the binding of its approximately 20 ns, analyzes the stability of the combination of drugs and ACE2, resulting in a candidate drug capable of stably binding, and then use in vitro experiment Methods to further screen for candidate drug activity to obtain active drugs reachabited (seefigure 1 ,figure 1 To screen SARS-COV-2 combined inhibitors pictures...

Embodiment 2

[0023]figure 2 To delibeine, the ACE2 is bonded to the ACE2 in vitro and there is a living chart of the combination of SARS-COV-2S protein with ACE2. Among them, A: A: Immunoconocrecipitation results showed that Darban Star had the highest inhibition of SARS-COV-2S protein and ACE2 binding activity, compared to other candidate drugs; B: Dalbwannah in an enzyme-linked immunosorbent assay It is also possible to suppress the binding of SARS-COV-2S protein to ACE2, consistent with the results of immunopetal precipitation; C: surface plasmon resonance experiment Determination of the binding constant of Dakanan Star and ACE2 is 1.47E-7 mol.

[0024]Immunopetal precipitation. The ACE2 protein (1 micrograms), SARS-COV-2SPIKE protein (1 micrograms), and different drugs (10 micrograms) were first incubated for half an hour, followed by adding S protein antibodies in accordance with the description, incubation for 10 minutes. The antibody beads of protein A were added, and then incubated for 10 m...

Embodiment 3

[0027]Deterilation of enzyme-linked immunosorbent adsorption. The solution formulation used in the experiment was as follows, the package was carried out: pH 9.6 0.05 m carbonate buffer; 1.59 g + sodium bicarbonate was 2.93 g, dissolved into 1 L deionized water. Washing liquid: cells with phosphate buffer (PBS) + 0.1% Tween-20. Note: Cells were used for PBS: 0.2 g of potassium chloride, 0.2 g of phosphate dihydrodium chloride, 8 g of sodium chloride, 7 hydrochloric acid dihydrogen sodium 2.16 g, deionized water 1L. Closed liquid (antibody dilution): Washing liquid per 100 ml + bovine serum albumin (BSA) 1g. Color: 3,3 ', 5,5'-tetramethylene aniline (TMB) single component color culture. Terminate: 2 mol / L sulfuric acid, 178.3 ml of water + 21.7 ml concentrated sulfuric acid, slowly stir mixed.

[0028]The specific steps are as follows, first adding the ACE2 protein (10 micrograms / ml) to be diluted with a package to be diluted into a 96-well plate in a 96-well plate, 4 degrees at nig...

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Abstract

The invention relates to the application of dalbavancin in the preparation of a drug for inhibiting the combination of SARS‑CoV‑2 and ACE2, and belongs to the technical field of drugs. The present invention provides a drug preparation application for dalbavancin to resist novel coronavirus activity by inhibiting the combination of SARS-CoV-2 and ACE2, and dalbavancin can be used for the preparation of drugs for the treatment or prevention of novel coronavirus pneumonia.

Description

Technical field[0001]The present invention relates to the field of drug technology, and more particularly to Dalban Star in the preparation of drugs inhibiting SARS-COV-2 and ACE2 binding drugs.Background technique[0002]Novel coronavirus pneumonia, the pathogenic factor is a new coronary virus (Severe Acute RespiratorySyndrome, SARS-COV-2). The specific mechanism of SARS-COV-2 disease is not fully explicit. Preliminary study revealed that the process of SARS-COV-2 infection cells may be the same as other coronaviruses, and the S protein of its surface is combined with a specific angiotensin convertase 2 (ACE2) of the infected cell membrane. Copying intracellularly by mediation of ACE2 into cells. Therefore, S protein and ACE2 binding blockers can effectively inhibit SARS-COV-2 infection cells. However, there is currently no effective drug for new coronavirus s proteins and ACE2.Inventive content[0003]It is an object of the present invention to provide a drug in which Daban Star is p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K38/14A61P31/14A61P11/00
CPCA61K38/14A61P31/14A61P11/00
Inventor 赖仞彭小忠王淦龙承波刘红旗杨梦莉
Owner KUNMING INST OF ZOOLOGY CHINESE ACAD OF SCI
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