Application of carbenoxolone in preparing anti-dengue virus medicine

A technology of dengue virus and carbenoxic acid, applied in antiviral agents, resistance to vector-borne diseases, and pharmaceutical formulations, can solve the problems that endanger the lives and health of people in tropical and subtropical regions, and have not developed anti-dengue virus drugs and vaccines, Lack of effective animal models and other issues, to achieve huge social benefits and research value, good application prospects, and easy access to the effect

Active Publication Date: 2015-06-03
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The prevalence of dengue virus has seriously endangered the lives and health of people in the tropics and subtropics, and brought a heavy social and economic burden to developing countries. Anti-dengue virus drugs and vaccines that can be applied clinically, so it is quite urgent to develop drugs against dengue virus infection

Method used

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  • Application of carbenoxolone in preparing anti-dengue virus medicine
  • Application of carbenoxolone in preparing anti-dengue virus medicine
  • Application of carbenoxolone in preparing anti-dengue virus medicine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Toxicity test of carbenoxic acid on A549 cells:

[0035] The carbenoxic acid used in the present invention was purchased from Sigma (C4790-1G).

[0036] Toxicity test

[0037] 1. Inoculation of A549 cells: use DMEM medium containing 5% fetal bovine serum to prepare a single cell suspension, inoculate 2000-3000 cells per well into 96-well cell culture plates, and inoculate volume of 100ul per well;

[0038] 2. Cultivate A549 cells: culture for 1 day at 37°C, 5% CO2;

[0039] 3. Add carbenoxol: suck out the DMEM medium in each well, add 100ul carbenoxol diluted with DMEM medium containing 5% fetal bovine serum to the corresponding concentration (10UM, 25UM, 50UM, 100UM, 200UM) to each well Peric acid, control well plus 100ul of DMEM medium containing 5% fetal bovine serum without drugs;

[0040] 4. Color: After 24 hours of culture, add 10ul of MTT solution to each well, continue to incubate for 4 hours at 37°C, 5% CO2 culture conditions, then terminate the culture, d...

Embodiment 2

[0047] Toxicity test of 18α glycyrrhetinic acid on A549 cells:

[0048] The 18α glycyrrhetinic acid used in the present invention was purchased from Sigma (G8503-250MG).

[0049] Toxicity test

[0050] 1. Inoculation of A549 cells: use DMEM medium containing 5% fetal bovine serum to prepare a single cell suspension, inoculate 2000-3000 cells per well into 96-well cell culture plates, and inoculate volume of 100ul per well;

[0051] 2. Cultivate A549 cells: culture for 1 day at 37°C, 5% CO2;

[0052] 3. Add 18α glycyrrhetinic acid: discard the DMEM medium in each well, add 100ul of 18α glycyrrhetinic acid diluted to the corresponding concentration (10UM, 25UM, 50UM) with DMEM medium containing 5% fetal bovine serum to each well 100ul of DMEM medium containing 5% fetal bovine serum without drugs was added to the control well;

[0053] 4. Color: After 24 hours of culture, add 10ul of MTT solution to each well, continue to incubate for 4 hours at 37°C, 5% CO2 culture condit...

Embodiment 3

[0060] Inhibitory effect of carbenoxic acid on DENV2:

[0061] DENV2 MOI=1 to infect A549 cells, the experimental steps are as follows:

[0062] 1. Planting cells: Inoculate A549 cells in a 24-well cell culture plate. After 24 hours, the cells grow to a monolayer (the area of ​​the cell covering the bottom of the well is about 80-90%). Aspirate the medium, insert 100ul of virus samples, and adsorb at 37°C 1 hour. After the adsorption is completed, the virus liquid in each well is discarded, and the unadsorbed virus is washed away with DMEM medium. Add carbenoxacin at specified concentrations (10UM, 25UM, 50UM, 100UM) diluted with DMEM medium containing 5% fetal bovine serum, and store at 37°C in 5% CO 2 Incubate in an incubator for 24 hours, collect the supernatant in each well, and then detect the virus titer according to TCID50.

[0063] Table 3 different concentrations of carbenoxic acid on DENV2 titer reduction experiment

[0064]

[0065] 2. TCID50 experiment:

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Abstract

The invention discloses a new application of carbenoxolone, pharmaceutically acceptable derivatives thereof or medicine compositions containing either in the pharmaceutical manufacturing field. According to the experiments, the carbenoxolone can protect susceptible cells from infection by the dengue virus, which demonstrates that the carbenoxolone has underlying application value in the field of curing dengue virus infectious diseases. According to the invention, experiment evidences are provided for clinically using the carbenoxolone to cure the dengue virus infectious diseases, which has a certain guiding significance for developing anti-dengue virus medicines and also has an important reference value.

Description

technical field [0001] The present invention relates to the invention field of medicine application, more specifically, relates to the application of carbenoxic acid in the preparation of anti-dengue virus infection medicine. Background technique [0002] Glycyrrhizinic acid (carbenoxolone) is the disodium salt of glycyrrhetinic acid hemisuccinate. Glycyrrhetinic acid is a compound produced by removing 2 molecules of glucuronic acid after hydrolysis of glycyrrhizinic acid and its salt (glycyrrhizin). The chemical constituents of licorice mainly exist in the rhizomes and roots of licorice. The chemical formula of carbenic acid is: C 34 h 48 o 7 Na 2 , Molecular weight: 614.7, carbenoxic acid is a colorless powder, tasteless, soluble in water to form a yellowish liquid. Its molecular structure is shown in formula (1): [0003] [0004] There are two general medical uses of carbenoxic acid: 1. As a gap junction blocker, it is used to reduce the material conduction betw...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61K31/56A61P31/14
CPCY02A50/30
Inventor 黄曦何莉
Owner SUN YAT SEN UNIV
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