KR20130106192A - Composition for inhibiting high glucose-induced inflammatory comprising fisetion or pharmaceutically acceptable salt thereof as an active ingredient - Google Patents

Abstract

PURPOSE: A composition for suppressing inflammation induced by high glucose is provided to suppress NF-kappaB transcription and the secretion of inflammatory cytokines induced by high glucose and to reduce histone acetylase (HAT) activity, thereby preventing and treating inflammation induced by high glucose. CONSTITUTION: A pharmaceutical composition for suppressing inflammation induced by high glucose contains fisetin or a pharmaceutically acceptable salt thereof as an active ingredient. Fisetin is denoted by chemical formula 1. The composition suppresses the generation of inflammatory cytokines induced by high glucose. The inflammatory cytokines include tumor necrosis factor-alpha (TNF-alpha) or interleukin-6 (IL-6). The composition suppresses HAT activity induced by high glucose and increases histone deaceylase (HDAC) activity.

Description

COMPOSITION FOR INHIBITING HIGH GLUCOSE-INDUCED INFLAMMATORY COMPRISING FISETION OR PHARMACEUTICALLY ACCEPTABLE SALT THEREOF AS AN ACTIVE INGREDIENT}

The present invention relates to a composition for inhibiting inflammation induced by high glucose containing phytin, and more particularly, to the production of inflammatory cytokines induced by high glucose containing phytin or a pharmaceutically acceptable salt thereof. It relates to a composition for inhibition.

Hyperglycemia is a major contributor to various diabetic complications. Diabetes mellitus is a representative inflammatory disease characterized by insufficient or inefficient insulin secretion and increased blood glucose. High glucose increases the expression of inflammatory cytokines, tumor necrosis factor-α (TNF-α), and chemokines, nuclear factor-kB (NF-kB). Epigenetics (eukaryotic) refers to bringing about a change in gene expression without a change in DNA sequencing. In the present invention, interest in modification of DNA and histones has been gained. High glucose induces pro-inflammatory cytokines through epigenetic changes that regulate chromatin remodeling by inhibiting histone acetylation. Although epigenetics modification by natural-derived dietary factors may be an excellent treatment and prevention target for diabetes and diabetic complications, epigenetics knowledge is known despite the fact that epigenetic properties in diabetes are distinct compared to normal individuals. The use of histone acetylase inhibitors and deacetylase inducers in diabetes mellitus and diabetic complications is very poor. In addition, there is little research using the epigenetics knowledge on diet and this type of diabetes and diabetic complications. Recent studies have revealed the role of epigenetic control in diabetes, but the study of epigenetic control in diabetes mellitus using natural-derived materials is insufficient and the mechanism is not clear.

TNF-α is an proinflammatory cytokine produced by many cell types, including macrophages, monocytes, smooth muscle cells, lymphoid cells and fibroblasts. TNF-α is involved in inflammatory effects by inducing various inflammatory chemokines. TNF-α initiates a cascade of signal events involving the activity of the transcription factors NF-kB and MAP kinase family.

NF-kB is an important transcription factor required for the expression of many inflammatory genes. NF-kB plays an important role in the expression of cytokines such as TNF-α, IL-6, which mediate responses to inflammatory stimuli in allergic inflammatory responses. In mammals, the following NF-kB families have 5 members: RelA / p65, RelB, c-Rel, NF-kB1 / p50, and NF-kB2 / p52. The p50-RelA / p65 heterodimer is a typical member of the Rel family of transcription factors. It also binds to promoters of NF-kB dependent inflammatory genes and induces expression of these genes. p65 is an essential element of NF-kB. NF-kB activity is regulated by RelA / p65 acetylation and deacetylation, which are mediated by histone acetyltransferases (HATs) and histone deacetylases (HDACs).

Histones play an important role in defining gene transcriptional activity. Histone acetylation / deacetylation, regulated to act in both directions by HDACs and HATs, is a major epigenetic event that plays an important role in inflammation. Histone acetylation is associated with increased binding of the transcription factor NF-kB. HDACs and HATs play a major role in regulating proinflammatory responses. Modified HAT and HDAC activity can lead to a number of diseases including cancer, diabetes, cardiac hypertrophy and asthma. High glucose induces NF-kB activity by accumulation of the transcriptional coactivator molecule p300 with endogenous HAT activity, leading to histone acetylation and pro-inflammatory cytokine secretion by DNA unwinding. Histone acetylation is associated with increased activity of NF-kB, which results in increased acetylation of the RelA / p65 subunit of NF-kB.

Flavonoids are low levels of polyphenolic compounds rich in seeds, citrus fruits, red wine, tea and olive oil. Because flavonoids have a variety of biological effects, including antioxidant, antiplatelet, antithrombotic, cytoprotective, antiallergic, antiviral, anticarcinogenic, and anti-inflammatory effects, some flavonoids have been studied as potential anti-inflammatory reagents. have.

Blood paroxetine (Fisetin) [3,7,3 ', 4'- tetrahydro-hydroxy-flavone (3,7,3', 4'-tetrahydroxyflavone) ] is fog tree (Continus It is a flavonoid dietary ingredient found in coggygria ), which is widely distributed in fruits and vegetables such as strawberries, apples, persimmons, grapes, onions and cucumbers. Pacetin exhibits a variety of activities including neurotrophic, antioxidant, anti-inflammatory and antiangiogenic effects. However, no molecular mechanisms have been reported on how cecetin inhibits inflammation in a high glucose environment and its mechanism inhibits NF-kB activity and affects epigenetic regulation.

Accordingly, the present inventors have made intensive efforts to clarify the mechanism of phycetin for anti-inflammatory effects, and as a result, phycetin is inflammatory through the NF-kB signaling pathway by changing histone acetylation / deacetylation under high glucose conditions in human monocytes. By confirming that gene expression of cytokines can be suppressed, the present invention has been completed by revealing that the phycetin can be usefully used for inhibiting inflammation-induced cytokines induced by high glucose.

It is an object of the present invention to provide a composition for inhibiting inflammatory cytokine production induced by high glucose containing pisetin.

Another object of the present invention is to provide a composition for inhibiting inflammation caused by high glucose containing picetin.

It is another object of the present invention to provide a composition for preventing and treating inflammatory diseases caused by high glucose containing picetin.

In order to achieve the above object, the present invention provides a composition for inhibiting inflammatory cytokine production induced by high glucose containing fisetin (fisetin) or a pharmaceutically acceptable salt thereof as an active ingredient.

In addition, the present invention provides a pharmaceutical composition for inhibiting inflammation caused by high glucose, which contains pcetin or a pharmaceutically acceptable salt thereof as an active ingredient.

The present invention also provides a pharmaceutical composition for the prevention and treatment of inflammatory diseases caused by high glucose containing picetin or a pharmaceutically acceptable salt thereof as an active ingredient.

In addition, the present invention provides a health food for inhibiting inflammation induced by high glucose containing an active ingredient of picetin or a pharmaceutically acceptable salt thereof.

In addition, the present invention is to provide a health food for preventing and ameliorating inflammatory diseases caused by high glucose containing picetin or a pharmaceutically acceptable salt thereof as an active ingredient.

The present invention is directed to the inhibition of the release of inflammatory cytokines such as TNF-α and IL-6 induced by high glucose, inhibition of NF-kB transcriptional activity, reduction of HAT activity, p300 and acetylated By reducing CBP / p30 gene expression and confirming that it can induce HDAC activity, the phycetin can be usefully used for the prevention and treatment of inflammation caused by high glucose.

1 is a diagram showing the chemical formula of fisetin.
2 is a graph showing cytotoxicity of THP-1 cells induced with cultured high glucose (HG) of fisetin. It is a graph showing the result of measuring the effect of pacetin on cell viability by CCK-8 analysis for 48 hours.
3 is a diagram showing the inhibitory effect on cytokine secretion of high glucose glucose-induced THP-1 cells.
FIG. 3A shows that after treating cells (1 × 10 ⁵ cells / ml) with phycetin for 48 hours, mRNA levels of TNF-α and IL-6 were measured by quantitative real-time PCR. A graph showing one result.
FIG. 3B is a graph showing the results of measuring the concentration of TNF-α by ELSIA assay kit according to the manufacturer's instructions, after collecting the medium for 48 hours after treating the cells with phycetin.
FIG. 3C shows the result of measuring the level of TNF-α by Western blot analysis after treating the cells with phycetin for 48 hours, collecting the cells, preparing the nuclear lysate, and then measuring the level of TNF-α. It is an illustration. Here, p <0.01, p <0.001 (compared to the HG group).
Figure 4 is a diagram showing the regulatory effect on high glucose-induced THP-1 cells of picetine on HAT (histone acetylase) and HDAC (histone deacetylase) activity.
4A is a graph showing the results of measuring HAT activity after treating the cells with phycetin for 48 hours, collecting the cells, and preparing the nuclear lysate.
4B is a graph showing the results of measuring HDAC activity after treating the cells with phycetin for 48 hours, collecting the cells, preparing the nuclear lysate.
4C is a diagram showing the result of measuring the acetylated CBP (binding protein) / p300 level by Western blot after extracting the nuclear protein p300. Here, p <0.01, p <0.001 (compared to the HG group).
Figure 5 is a diagram showing the inhibitory effect of gene expression levels of high glucose-induced THP-1 cells of cecetin.
FIG. 5A shows that after 48 hours of treatment of cells with phycetin, nuclear lysates were prepared, and gene expression levels for NF-kB p65 and acetylated NF-kB p65 were measured by Western blot analysis. The figure shows the result.
FIG. 5B is a diagram showing the results of immunoprecipitation with p300 in FIG. 5A, followed by Western blot analysis of binding of p300 to acetylated NF-kB p65.

Hereinafter, the present invention will be described in detail.

The present invention provides a composition for inhibiting inflammatory cytokine production induced by high glucose containing pisetin or a pharmaceutically acceptable salt thereof as an active ingredient.

In addition, the present invention provides a pharmaceutical composition for inhibiting inflammation caused by high glucose, which contains pcetin or a pharmaceutically acceptable salt thereof as an active ingredient.

The present invention also provides a pharmaceutical composition for the prevention and treatment of inflammatory diseases caused by high glucose containing picetin or a pharmaceutically acceptable salt thereof as an active ingredient.

Pacetin according to the present invention is a compound represented by the following formula (1).

The general chemical name of the compound is [3,7,3 ', 4'-tetrahydroxyflavone].

The picetin compound according to the present invention may be used in the form of a pharmaceutically acceptable salt, and as the salt, an acid addition salt formed by a pharmaceutically acceptable free acid is useful. Acid addition salts include those derived from inorganic acids such as hydrochloric acid, nitric acid, phosphoric acid, sulfuric acid, hydrobromic acid, hydroiodic acid, nitrous acid or phosphorous acid, and aliphatic mono- and dicarboxylates, phenyl-substituted alkanoates, hydroxyalkanoates, Dioleate, aromatic acid, aliphatic and aromatic sulfonic acids. Such pharmaceutically innocuous salts include, but are not limited to, sulfate, pyrosulfate, bisulfate, sulfite, bisulfite, nitrate, phosphate, monohydrogenphosphate, dihydrogenphosphate, metaphosphate, pyrophosphate chloride, bromide, Butyrate, caprate, heptanoate, propiolate, oxalate, malonate, succinate, succinate, maleic anhydride, maleic anhydride, , Sebacate, fumarate, maleate, butyne-1,4-dioate, hexane-1,6-dioate, benzoate, chlorobenzoate, methylbenzoate, dinitrobenzoate, hydroxybenzoate, Methoxybenzoate, phthalate, terephthalate, benzene sulfonate, toluene sulfonate, chlorobenzene sulfide Propyl sulphonate, naphthalene-1-yne, xylenesulfonate, phenylsulfate, phenylbutyrate, citrate, lactate,? -Hydroxybutyrate, glycolate, maleate, Sulfonate, naphthalene-2-sulfonate or mandelate.

The acid addition salts according to the invention can be prepared by conventional methods, for example, by dissolving the phycetin compound in an excess of aqueous acid solution and using the water miscible organic solvent, such as methanol, ethanol, acetone or acetonitrile. It can be prepared by precipitation. It may also be prepared by evaporating a solvent or excess acid in this mixture and then drying or by suction filtration of the precipitated salt.

In addition, bases can be used to make pharmaceutically acceptable metal salts. The alkali metal or alkaline earth metal salt is obtained, for example, by dissolving the compound in an excess amount of an alkali metal hydroxide or an alkaline earth metal hydroxide solution, filtering the insoluble compound salt, and evaporating and drying the filtrate. At this time, it is preferable for the metal salt to produce sodium, potassium or calcium salt. The corresponding silver salt is also obtained by reacting an alkali metal or alkaline earth metal salt with a suitable silver salt (for example, silver nitrate).

Picetin compounds according to the present invention include not only pharmaceutically acceptable salts thereof, but also isomers thereof or possible solvates or hydrates that may be prepared therefrom.

In addition, the phycetin compound according to the present invention may be commercially available or synthesized using conventional synthetic methods known in the art of organic synthesis.

The phycetin compound according to the present invention or a pharmaceutically acceptable salt thereof inhibits cytokine production induced by high glucose, inhibits the increase in histone acetylase (HAT) activity induced by high glucose and inhibits histone deacetylase (HDAC). By increasing the decrease in activity, and inhibiting the NF-kB transcriptional activity induced by high glucose, it can be usefully used in the treatment of inflammatory inhibitors or inflammatory diseases.

At this time, the inflammatory disease is preferably diabetes or diabetic complication, the diabetic complication is diabetic retinopathy, diabetic nephropathy, diabetic neuropathy, diabetic angiopathy, diabetic ketoacidosis, hyperosmotic biketone coma, lactic acid It is preferably, but not limited to, any one selected from the group consisting of symptoms, diabetic dementia, stroke, cerebral infarction, acute myocardial infarction, arteriosclerosis, chronic kidney failure, peripheral vascular disease, and diabetic foot.

In one embodiment of the present invention, the analysis of the effect of picetin on epigenetic regulation and pro-inflammatory cytokine secretion under high glucose conditions in human monocytes, the result of the high glucose, such as TNF-α and IL-6 It has been shown to significantly inhibit the secretion of induced cytokines and NF-kB transcriptional activity, significantly reduce HAT activity, p300 and acetylated CBP / p30 gene expression, and significantly induce HDAC activity. . Therefore, in the present invention, since the phycetin has an activity of inhibiting cytokine production induced by high glucose in monocytes through epigenetic changes, it can be seen that the phycetin can be usefully used as an active ingredient of an inflammatory inhibitor. have.

Pharmaceutical compositions containing the present invention a phycetin compound or a pharmaceutically acceptable salt thereof as an active ingredient may be formulated in various oral or parenteral dosage forms as follows, but is not limited thereto.

Examples of formulations for oral administration include tablets, pills, light / soft capsules, liquids, suspensions, emulsions, syrups, granules, elixirs and the like, , An extender, a wetting agent, a disintegrant, a lubricant, a binder, a surfactant, and the like. As the disintegrant, agar, starch, alginic acid or its sodium salt, anhydrous calcium monohydrogenphosphate, etc. may be used. As the lubricant, silica, talc, stearic acid or its magnesium salt or calcium salt, polyethylene glycol and the like may be used , Magnesium aluminum silicate, starch paste, gelatin, tragacanth, methylcellulose, sodium carboxymethylcellulose, polyvinylpyrrolidine, and low-substituted hydroxypropylcellulose can be used as the binding agent. In addition, lactose, dextrose, sucrose, mannitol, sorbitol, cellulose, glycine, and the like can be used as a diluent. In some cases, a commonly known boiling mixture, an absorbent, a colorant, a flavoring agent and a sweetening agent can be used together.

In addition, the composition may be administered parenterally, and parenteral administration may be carried out by injecting subcutaneous injection, intravenous injection, intramuscular injection, or intra-thoracic injection. Herein, the phycetin compound or a pharmaceutically acceptable salt thereof is mixed in water with a stabilizer or buffer to prepare a parenteral dosage form in solution or suspension, which is prepared in unit dosage form of ampoules or vials. can do.

The pharmaceutical compositions according to the invention may also contain sterilized or adjuvants such as preservatives, stabilizers, wettable or emulsifying accelerators, salts for the control of osmotic pressure, buffers and other therapeutically useful substances, Granulation, or coating method. If desired, the composition according to the invention may also be administered in combination with other medicaments, for example other therapeutic agents.

In addition, the pharmaceutical composition according to the present invention may further comprise suitable carriers, excipients and diluents conventionally used in the manufacture of medicaments.

The pharmaceutical composition according to the present invention may be formulated in the form of powders, granules, tablets, capsules, oral preparations such as suspensions, emulsions, syrups and aerosols, external preparations, suppositories, Can be used. Examples of carriers, excipients and diluents that can be included in the composition of the present invention include lactose, dextrose, sucrose, sorbitol, mannitol, xylitol, erythritol, maltitol, starch, acacia rubber, alginate, gelatin, calcium phosphate, calcium silicate, Cellulose, methylcellulose, microcrystalline cellulose, polyvinylpyrrolidone, water, methylhydroxybenzoate, propylhydroxybenzoate, talc, magnesium stearate and mineral oil.

When formulated, diluents or excipients such as fillers, extenders, binders, wetting agents, disintegrating agents, and surfactants are usually used. Solid formulations for oral administration include tablets, pills, powders, granules, capsules and the like, which may be formulated into the compositions of the present invention with at least one excipient such as starch, calcium carbonate, (sucrose), lactose, gelatin and the like. In addition to simple excipients, lubricants such as magnesium stearate and talc are also used. Examples of the liquid preparation for oral use include suspensions, solutions, emulsions, and syrups. In addition to water and liquid paraffin, simple diluents commonly used, various excipients such as wetting agents, sweeteners, fragrances, preservatives and the like may be included . Formulations for parenteral administration include sterilized aqueous solutions, non-aqueous solutions, suspensions, emulsions, freeze-dried preparations, and suppositories. Examples of the suspending agent include propylene glycol, polyethylene glycol, vegetable oil such as olive oil, injectable ester such as ethyl oleate, and the like. As a suppository base, witepsol, macrogol, tween 61, cacao paper, laurin, glycerol gelatin and the like can be used.

In addition, when the pharmaceutical composition according to the present invention is formulated in unit dose form, it is preferable to contain, as an active ingredient, a unit dose of about 0.1 to 1,500 mg of the picetin compound or a pharmaceutically acceptable salt thereof. The dosage depends on the physician's prescription depending on factors such as the patient's weight, age and the particular nature and severity of the disease. However, the dosage required for adult therapy is usually in the range of about 1 to 500 mg per day depending on the frequency and intensity of administration. A total daily dose of about 5 to 300 mg per day, separated by a single dose at the time of intramuscular or intravenous administration to an adult would suffice, but in some patients a higher daily dose may be desirable.

In addition, the preferable dosage of the pharmaceutical composition according to the present invention varies depending on the condition and body weight of the patient, the degree of disease, the type of drug, the route of administration and the period of time, but can be appropriately selected by those skilled in the art. However, for the desired effect, the composition of the present invention is preferably administered at 0.0001 to 0.03 g / kg, preferably at 0.001 to 8 mg / kg. The administration may be carried out once a day or divided into several times. The dose is not intended to limit the scope of the invention in any way.

In addition, the present invention provides a health food for inhibiting inflammation induced by high glucose containing an active ingredient of picetin or a pharmaceutically acceptable salt thereof.

In addition, the present invention is to provide a health food for preventing and ameliorating inflammatory diseases caused by high glucose containing picetin or a pharmaceutically acceptable salt thereof as an active ingredient.

The inflammatory disease is preferably diabetes or diabetic complications, the diabetic complications are diabetic retinopathy, diabetic nephropathy, diabetic neuropathy, diabetic angiopathy, diabetic ketoacidosis, hyperosmotic biketone coma, lactic acidosis , Diabetic dementia, stroke, cerebral infarction, acute myocardial infarction, atherosclerosis, chronic kidney failure, peripheral vascular disease and diabetic foot is any one selected from the group consisting of, but not limited to.

The picetin compound according to the present invention or a pharmaceutically acceptable salt thereof inhibits cytokine production induced by high glucose, inhibits the increase in HAT activity induced by high glucose and increases the decrease in HDAC activity, By exhibiting the activity of inhibiting NF-kB transcriptional activity induced by high glucose, it can be usefully used in health food compositions for inhibiting inflammation or preventing and improving inflammatory diseases.

There is no particular limitation on the kind of the food. Examples of the foods to which the above substances can be added include dairy products including dairy products, meat, sausage, bread, biscuits, rice cakes, chocolate, candies, snacks, confectionery, pizza, ramen and other noodles, gums, ice cream, Beverages, alcoholic beverages and vitamin complexes, dairy products, and dairy products, and includes health supplements or health functional foods in a conventional sense.

The cecetin compound according to the present invention can be added as it is to food or used together with other food or food ingredients, and can be suitably used according to conventional methods. The amount of the active ingredient to be mixed can be suitably determined according to the intended use (for prevention or improvement). Generally, the amount of the compound in the health food may be 0.1 to 90 parts by weight of the total food. However, in the case of long-term intake intended for health and hygiene purposes or for the purpose of controlling health, the amount may be less than the above range, and since there is no problem in terms of safety, the active ingredient may be used in an amount exceeding the above range.

The health functional beverage composition of the present invention is not particularly limited to the other ingredients other than the above-mentioned compounds as essential ingredients in the indicated ratios and may contain various flavors or natural carbohydrates as additional ingredients such as ordinary beverages. Examples of the above-mentioned natural carbohydrates include monosaccharides such as glucose, fructose and the like; Disaccharides such as maltose, sucrose and the like; And conventional sugars such as polysaccharides such as dextrin, cyclodextrin, and sugar alcohols such as xylitol, sorbitol, and erythritol. Natural flavors (tau martin, stevia extracts (e.g., rebaudioside A, glycyrrhizin, etc.) and synthetic flavors (saccharin, aspartame, etc.) can be advantageously used as flavors other than those described above The ratio of the natural carbohydrate is generally about 1 to 20 g, preferably about 5 to 12 g per 100 of the composition of the present invention.

In addition to the above, the phycetin compound according to the present invention may contain various nutrients, vitamins, minerals (electrolytes), flavors such as synthetic flavors and natural flavors, coloring and neutralizing agents (such as cheese, chocolate), pectic acid and salts thereof, Alginic acid and salts thereof, organic acids, protective colloidal thickeners, pH adjusters, stabilizers, preservatives, glycerin, alcohols, carbonation agents used in carbonated drinks and the like. In addition, the phycetin compound of the present invention may contain a pulp for the production of natural fruit juices and fruit juice drinks and vegetable drinks.

These components may be used independently or in combination. The proportion of such additives is not so critical but is usually selected in the range of from 0.1 to about 20 parts by weight per 100 parts by weight of the cecetin compound of the present invention.

Hereinafter, the contents of the present invention will be described in more detail with reference to Examples and Preparation Examples.

However, the following Examples and Preparation Examples are merely illustrative of the present invention, and the content of the present invention is not limited to the following Examples and Preparation Examples.

Cell culture

THP-1 cells were maintained at Roswell Park Memorial Institute (GPI) containing 10% FBS, 100 U / ml penicillin and 100 μg / ml streptomycin. THP-1 cells (1 × 10 ⁵ cells / ml) were normal blood glucose (normoglycemic) (NG, 5.5 mmol / L glucose) in the presence or absence of an osmotic control (19.5 mmol / l mannitol) or phycetin (3-10 uM). ) Or hyperglycemic (HG, 20 mmol / L glucose), left for 48 hours to measure cytokine secretion, and washed the cells with phosphatebuffered saline (PBS). Cells were harvested.

Confirmation of Cytotoxicity of Pacetin on THP-1 Cells Cultured Under High Glucose Conditions

In order to examine if cecetin has cytotoxicity against THP-1 cells induced by high glucose, it was measured using a Cell Counting Kit (CCK) assay.

Specifically, picetin (FIG. 1) was purchased from Sigma Aldrich (St Louis, MI, USA), DMSO containing picetin was used as a stock solution and diluted with culture medium. 0.2% DMSO was used as vehicle control. THP-1 cells were seeded at 4 × 10 ³ cells / well in 96-well plates and then incubated for 48 hours after treatment with picetin. Cell viability was measured three times using Cell Counting Kit-8 (Dojindo Molecular Technologies, ML) according to the manufacturer's protocol. Absorbance was measured using a Wallac EnVision microplate reader (PerkinElmer, Finland).

For statistical analysis, significance was determined by Student's t- test, and differences were considered significant when *** P <0.01 and ** P <0.1.

As a result, no cytotoxic effect was observed by treatment with phycetin (3-10 uM; 48 h) (FIG. 2).

Confirmation of Inhibitory Effect of Pacetin on Inflammatory Cytokine Expression in Monocytes Under High Glucose Conditions

To investigate if cecetin inhibits gene expression of pro-inflammatory cytokines such as TNF-α and IL-6 in high glucose-induced THP-1 cells, using a Real-Time PCR system and ELISA kit And analyzed.

<3-1> mRNA Level Measurement of TNF-α and IL-6 by Real-Time PCR

Cells (1 × 10 ⁵ cells / ml) were treated with phycetin for 48 hours, and then mRNA levels of TNF-α and IL-6 were measured by performing quantitative real-time PCR. Specifically, quantitative real time PCR was performed as follows.

Primers were designed using an online primer design program (Rozen and Skaletsky, 2000). Total RNA was isolated using TRIzol reagent (Life Technologies, MD) according to the manufacturer's protocol. The concentration and purity of total RNA was calculated by measuring the flaw at 260 and 280 nm. The first strand cDNA was synthesized using 2 mg total RNA and 1 mM oligo-dT ₁₈ primer and Omniscript reverse transcriptase (Qiagen, CA). SYBR green-based quantitative PCR is a Stratagene Mx3000P real-time PCR system with 3 ml of first strand cDNA and 10 pmole of bioneer (Daejeon, Korea) and Brilliant SYBR Green Master, according to the manufacturer's protocol. It was performed using Mix (Stratagene, CA). The PCR reaction was considered in three parts. The first portion (10 min at 95 ° C.) activated the polymerase; The second part included three-stage cycling (35 cycles) for 40 seconds (denaturation) at 94 ° C., 40 seconds (unwinding) at 60 ° C., and 1 minute (extension) at 72 ° C .; The third part was performed to generate PCR product temperature dissociation curves (melting curves) for 1 minute at 95 ° C, 30 seconds at 55 ° C, and 30 seconds at 95 ° C. All reactions were performed three times repeatedly, the data is ^two-analyzed by method ^{△△ CT} (Livak and Schmittgen, 2001). GAPDH was used as a control gene. Significance was determined by 2 ^-ΔΔCT values normalized by GAPDH.

<3-2> Concentration Measurement of TNF-α Using ELISA

48 hours after treatment of cells with various concentrations of phycetin, cell medium was harvested. Then, the concentration of TNF-α was measured using a TNF-α ELISA assay kit (Abcam, Cambridge, MA, USA) according to the manufacturer's protocol. Values were calculated based on standard curves designed for analysis.

<3-3> Level measurement of TNF-α using Western blot analysis

After 48 hours of treatment with the cells of phycetin, the cells were harvested, nuclear lysates were prepared, and the level of TNF-α was measured by performing Western blot analysis. Specifically, Western blot analysis was performed as follows.

Cells were prepared at 4 ° C. in buffer containing 10 mM Tris-HCl (pH 7.5), 150 mM NaCl, 0.05% (v / v) Tween 20, 1 mM PMSF, and one protease inhibitor cocktail tablet (Roche, Germany). Homogenized and then centrifuged at 10,000 μg g for 15 minutes. Supernatants were used as cytoplasmic protein fractions and nuclear proteins were extracted using NucBuster protein extraction kit (Novagen, Germany). Protein concentration was measured using the BCA protein analysis kit (Pierce, IL). Sample (20 mg) was sample buffer [100 mM Tris-HCl, 2% sodium dodecyl sulfate, 1% 2-mercaptoethanol, 2% glycerol, 0.01% bro Bromophenol blue, pH 7.6], then incubated at 95 ° C. for 15 minutes and then loaded onto a 10% polyacrylamide gel. Electrophoresis was performed using Mini Protean 3 Cell (Bio-Rad, CA). The degraded proteins were transferred to nitrocellulose membranes (Scheicher & Schnell BioScience, Germany). To confirm the amount and transfer efficiency of the loaded protein, the membrane was stained with Ponceau S staining solution. For immunoassay, the membranes were washed and then incubated in blocking buffer (10 mM Tris-HCl, pH 7.5, 150 mM NaCl, 0.1% Tween 20, 3% skim milk powder) and then at room temperature for 2 hours. Incubated with diluted primary antibody (1: 1000). After the primary antibody reaction, the membranes were washed three times (15 min each) with blocking buffer and then probed with diluted secondary antibody (1: 2000) for 1 hour. After washing the membrane three times (15 minutes each), it was developed with SuperSignal West Femto Maximum Sensitivity Substrate (Pierce Biotechnology) using LAS-3000 luminescence image analyzer (Fuji Photo Film Co., Ltd., Japan).

As a result, inflammatory cytokine secretion was significantly increased compared to normal blood glucose under high glucose conditions. Mannitol was used as a hyperosmotic control, which did not affect cytokine secretion. Pacetin inhibited mRNA expression levels of TNF-α and IL-6 induced by high glucose concentration-dependently (FIG. 3A). In addition, in order to confirm the effect of picetin on the gene expression of pro-inflammatory cytokines, cytokine levels were analyzed in cell medium using ELISA and cytokine levels in nuclear lysates by Western blot analysis. , Picetin significantly reduced cytokine secretion of human monocytes under high glucose conditions (FIGS. 3B and C).

Confirmation of the Moderating Effect of Pacetin on Histone Acetylation under High Glucose Conditions in Monocytes

In order to investigate if the cecetin regulates the degree of histone acetylation in THP-1 cells induced by high glucose, it was analyzed using an ELISA kit and Western blot analysis.

<4-1> HAT and HDAC activity measurement using ELISA

48 hours after treatment with cells of various concentrations of cecetin, cell medium was harvested and nuclear lysates were prepared. Then, 50 ug of nuclear lysate proteins were taken from each group and HAT and HDAC activities were measured, respectively. Experiments were measured using HAT and HDAC analysis kits (Biovison, Mountain View, CA) according to the manufacturer's protocol. Absorbance was measured at 405 nm and 440 nm.

<4-2> Acetylated CBP / p300 Level Measurement Using Western Blot Analysis

After extraction of the nuclear protein p300, Western blot was performed by the method as described in Example <3-3>, the levels of acetylated CBP / p300, p300 and HDAC. At this time, anti-p300 and anti-acetyl CBP / p300 were purchased from Cell Signaling Technology (Beverly, MA, USA), and anti-HDAC-1, anti-HDAC-2 and anti-HDAC-3 were Abcam (Cambridge, MA). , USA).

As a result, phycetin increased HAT activity and decreased HDAC activity under high glucose conditions (A and B in FIG. 4). In addition, pisetin reduced p300 expression and acetylated CBP / p300 expression, coactivators including endogenous HATs, compared to normal blood glucose conditions under high glucose conditions (FIG. 4C).

Confirmation of Inhibitory Effect of Pacetin on NF-kB p65 Activity Under High Glucose Conditions

To determine if picetin modulates NF-kB activity in hyperglucose-induced THP-1 cells, immunoprecipitation and Western blot analysis of the effect of pacetin on the activity and acetylation of NF-kB p65 It was analyzed using.

<5-1> Determination of the expression level of NF-kB p65 and acetylated NF-kB p65 by Western blot analysis

After 48 hours of treatment with the cells of pacetin, nuclear lysates were prepared and the expression levels for NF-kB p65 and acetylated NF-kB p65 were determined as described in Example <3-3> above. Western blot analysis was performed. At this time, anti-NF-kB p65, anti-phosphorylated NF-kB p65, and anti-acetylated p65 were purchased from Cell Signaling Technology (Beverly, MA, USA), respectively.

<5-2> Determination of the binding level of p300 and acetylated NF-kB p65 by immunoprecipitation

After extraction of the nuclear protein p300, p300 and acetylated NF-kB p65 were immunoprecipitated together, and then binding of p300 and acetylated NF-kB p65 was measured by Western blot analysis. Specifically, immunoprecipitation was performed as follows.

Samples (300 ug) were mixed with protein A / G plus agarose (Santacruze biotehchnology, Inc, Cam USA) for 1 hour at 4 ° C. After 1 hour, the supernatant was collected in a fresh tube and then incubated with antibody (2 ug / ml overnight at 4 ° C. After incubation, the samples were incubated with 40 ul protein A / G plus agarose at 4 ° C. for 2 hours. The samples were taken by micro-centrifugation and washed three times with PBS After the washing step the samples were mixed with 15 ul 2 × SDS sample buffer followed by Western blot analysis.

As a result, phycetin significantly reduced acetylation and phosphorylation of NF-kB p65 (FIG. 5A). In addition, in order to confirm epigenetic regulation of pacetin against inflammation, investigating whether p300 binds to acetylated NF-kB p65 for NF-kB related inflammatory cytokines, the results showed that Binding was reduced (FIG. 5B).

Production Example 1 Preparation of Tablet (Direct Pressurization)

5.0 mg of compound of formula 1

Lactose 14.1 mg

Crospovidone USNF 0.8 mg

0.1 mg of magnesium stearate

According to the conventional preparation method of tablets, the above ingredients were added in the prescribed amounts, uniformly mixed and pressed to prepare tablets.

Production Example 2 Preparation of Tablet (Wet Granulation)

5.0 mg of compound of formula 1

Lactose 16.0 mg

Starch 4.0 mg

Presorbate 80 0.3 mg

2.7 mg of silicon dioxide

2.0 mg of magnesium stearate

After sifting the compound of Formula 1, lactose and starch were mixed. Thereafter, the polysorbate was dissolved in pure water, and then an appropriate amount was added to the active ingredient, lactose and starch mixture, followed by atomization. After drying, the granulate was sieved and mixed with colloidal silicon dioxide and magnesium starate. The granules were pressurized to prepare tablets.

Production Example 3 Preparation of Capsule

5.0 mg of compound of formula 1

Lactose 14.8 mg

10.0 mg of polyvinylpyrrolidone

0.2 mg of magnesium stearate

According to a conventional method for preparing a capsule, the above ingredients were added in the prescribed amounts, uniformly mixed, and then packed in an appropriate size gelatin capsule to prepare a desired capsule.

Preparation Example 4 Preparation of Injection

100 mg of compound of Formula 1

Mannitol 180 mg

_{Na 2 HPO 4 · 12H 2 O} 26 mg

Distilled water 2974 mg

According to the conventional method for preparing an injectable preparation, an injectable preparation was prepared by incorporating the aforementioned components in the amounts indicated.

Preparation Example 5 Preparation of Health Food

1000 mg of compound of formula 1

Vitamin mixture proper amount

70 μg of Vitamin A Acetate

Vitamin E 1.0 mg

0.13 mg of vitamin

Vitamin B2 0.15 mg

Vitamin B6 0.5 mg

0.2 μg of vitamin B12

10 mg vitamin C

Biotin 10 μg

Nicotinic Acid 1.7 mg

50 mg of folic acid

Calcium Pantothenate 0.5mg

Mineral mixture quantity

Ferrous Sulfate 1.75 mg

Zinc Oxide 0.82 mg

Magnesium carbonate 25.3 mg

15 mg of potassium phosphate monobasic

Secondary calcium phosphate 55 mg

Potassium citrate 90 mg

Calcium Carbonate 100 mg

Magnesium chloride 24.8 mg

Although the composition ratio of the above-mentioned vitamin and mineral mixture is comparatively mixed with a composition suitable for health food as a preferred embodiment, the compounding ratio may be arbitrarily modified, and the above ingredients are mixed according to a conventional method for producing healthy foods , Granules can be prepared and used in the manufacture of health food compositions according to conventional methods.

Production Example 6 Preparation of Healthy Drinks

1000 mg of compound of formula 1

Citric acid 1000 mg

100 g oligosaccharides

Plum concentrate 2 g

Taurine 1 g

Purified water was added to a total of 900 ml

The above components were mixed according to a conventional health drink manufacturing method, and the mixture was stirred and heated at 85 for about 1 hour. The resulting solution was filtered and sterilized in a sterilized 2 liter container, And used for manufacturing.

Although the composition ratio is relatively mixed with the ingredient suitable for the favorite drink, it is also possible to arbitrarily modify the blending ratio according to the regional or national preference such as the demand class, demand country, use purpose, and the like.

Claims (14)

A pharmaceutical composition for inhibiting inflammation caused by high glucose containing fisetin or a pharmaceutically acceptable salt thereof as an active ingredient.
The pharmaceutical composition for inhibiting inflammation induced by high glucose according to claim 1, wherein the picetin is represented by the following Chemical Formula 1:
[Formula 1]

.
The pharmaceutical composition for inhibiting inflammation induced by high glucose according to claim 1, wherein the composition inhibits inflammatory cytokine production induced by high glucose.
The method of claim 3, wherein the inflammatory cytokine is tumor necrosis factor-α (TNF-α) or Interleukin-6 (Interleukin-6, IL-6), characterized in that induced by high glucose Inflammation inhibiting pharmaceutical composition.
The method of claim 1, wherein the composition inhibits the increase in histone acetylase (HAT) activity induced by high glucose and increases the decrease in histone deacetylase (HDAC) activity, inhibiting inflammation induced by high glucose. Pharmaceutical composition for.
The pharmaceutical composition for inhibiting inflammation induced by high glucose according to claim 1, wherein the composition inhibits the activity of Nuclear Factor-kB (NF-kB) induced by high glucose. .
Pharmaceutical composition for the prevention and treatment of inflammatory diseases induced by high glucose containing fisetin (fisetin) or a pharmaceutically acceptable salt thereof as an active ingredient.
The pharmaceutical composition for preventing and treating inflammatory diseases induced by high glucose according to claim 7, wherein the picetin is represented by the following Chemical Formula 1:
[Formula 1]

.
8. The pharmaceutical composition for preventing and treating inflammatory diseases induced by high glucose according to claim 7, wherein the inflammatory disease is diabetes or diabetic complications.
Inflammation inhibiting health foods caused by high glucose containing fisetin (fisetin) or a pharmaceutically acceptable salt thereof as an active ingredient.
The health food for inhibiting inflammation induced by high glucose according to claim 10, wherein the picetin is represented by the following Chemical Formula 1.
[Formula 1]

.
Health food for preventing and ameliorating inflammatory diseases induced by high glucose containing pisetin or a pharmaceutically acceptable salt thereof as an active ingredient.
13. The health food for preventing and improving inflammatory diseases caused by high glucose according to claim 12, wherein the picetin is represented by the following Chemical Formula 1:
[Formula 1]

.
The method of claim 13, wherein the inflammatory disease is diabetes or diabetic complications, characterized in that the high-glucose induced inflammatory disease prevention and improvement health food.

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