WO2020195774A1 - 腸管バリア機能改善用組成物 - Google Patents
腸管バリア機能改善用組成物 Download PDFInfo
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- WO2020195774A1 WO2020195774A1 PCT/JP2020/010214 JP2020010214W WO2020195774A1 WO 2020195774 A1 WO2020195774 A1 WO 2020195774A1 JP 2020010214 W JP2020010214 W JP 2020010214W WO 2020195774 A1 WO2020195774 A1 WO 2020195774A1
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- Prior art keywords
- barrier function
- intestinal barrier
- improving
- composition
- intestinal
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/185—Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids
- A61K31/19—Carboxylic acids, e.g. valproic acid
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/21—Esters, e.g. nitroglycerine, selenocyanates
- A61K31/215—Esters, e.g. nitroglycerine, selenocyanates of carboxylic acids
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K31/00—Medicinal preparations containing organic active ingredients
- A61K31/70—Carbohydrates; Sugars; Derivatives thereof
- A61K31/7028—Compounds having saccharide radicals attached to non-saccharide compounds by glycosidic linkages
- A61K31/7034—Compounds having saccharide radicals attached to non-saccharide compounds by glycosidic linkages attached to a carbocyclic compound, e.g. phloridzin
- A61K31/704—Compounds having saccharide radicals attached to non-saccharide compounds by glycosidic linkages attached to a carbocyclic compound, e.g. phloridzin attached to a condensed carbocyclic ring system, e.g. sennosides, thiocolchicosides, escin, daunorubicin
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
- A61P1/04—Drugs for disorders of the alimentary tract or the digestive system for ulcers, gastritis or reflux esophagitis, e.g. antacids, inhibitors of acid secretion, mucosal protectants
Definitions
- the present invention relates to a composition for improving the intestinal barrier function.
- the present invention also relates to a method for improving the intestinal barrier function and the like.
- intestinal epithelial cells Under the intestinal epithelial cells, there are many cells of the immune system such as macrophages, dendritic cells, T cells, and B cells. Normally, intestinal epithelial cells are firmly adhered to each other by a structure called a tight junction, and high molecular weight substances are strictly controlled so as not to permeate the intercellular spaces. Intestinal epithelial cells also have a transporter for excreting hydrophobic foreign substances from the cells. These tight junction structures and transporters have an intestinal barrier function that prevents the invasion of foreign substances. However, when the intestinal barrier is damaged due to aging, poor living, stress, etc. and the intestinal permeability increases, high-molecular-weight substances such as intestinal bacteria and their bacterial cell components existing in the intestinal tract fill the cell gap.
- NASH non-alcoholic fatty liver disease
- EGF Epidermal growth factor
- Non-Patent Document 1 describes that flavonoids such as quercetin promote the formation of tight junctions and prevent chronic inflammation.
- An object of the present invention is to provide a novel composition for improving the intestinal barrier function, which can improve the intestinal barrier function.
- the present inventors have studied diligently to solve the above problems, and added inflammatory cytokines to an intestinal permeation model using the human intestinal cell culture strain Caco-2 to disrupt the intestinal barrier function in humans.
- ulsan-type triterpenes and their derivatives are useful for improving the intestinal barrier function.
- the present invention relates to the following compositions for improving the intestinal barrier function and the like.
- a composition for improving intestinal barrier function which comprises at least one compound selected from the group consisting of ulsan-type triterpenes, derivatives thereof and salts thereof as an active ingredient.
- the composition for improving the intestinal barrier function according to the above [1] wherein the compound is at least one compound selected from the group consisting of acetylursolic acid, ursolic acid, ursolic acid glycosides and salts thereof. object.
- the present invention it is possible to provide a novel composition for improving the intestinal barrier function and the like, which can improve the intestinal barrier function.
- the intestinal barrier function can be improved.
- the present invention can also contribute to the prevention or amelioration of a condition or disease associated with an abnormality in the intestinal barrier function by improving the intestinal barrier function.
- composition for improving the intestinal barrier function of the present invention contains at least one compound selected from the group consisting of ulsan-type triterpenes, derivatives thereof and salts thereof as an active ingredient.
- at least one compound selected from the group consisting of ulsan-type triterpenes, derivatives thereof and salts thereof is also referred to as a compound of the active ingredient in the present invention.
- one or more of the above compounds can be used as an active ingredient.
- Examples of ulsan-type triterpenes include ursolic acid, corosolic acid, and tolmentic acid.
- Derivatives of ulsan-type triterpenes include ulsan-type triterpene glycosides and ulsan-type triterpenes having an acetyl group.
- the ulsan-type triterpene glycoside is a glycoside having ulsan-type triterpene as an aglycone.
- a ursolic acid glycoside is a glycoside having ursolic acid as an aglycone.
- Examples of ulsan-type triterpenes having an acetyl group include acetyl ursolic acid, acetyl corosolic acid, and acetyl tormentic acid.
- Acetyl ursolic acid, ursolic acid, and ursolic acid glycosides are preferable as the ulsan-type triterpenes or derivatives thereof in the present invention.
- As the sugar constituting the ulsan-type triterpene glycoside monosaccharide, disaccharide and the like are preferable.
- Examples of the monosaccharide include glucose, galactose, rhamnose, fructose, mannose, arabinose and the like.
- Examples of the disaccharide include maltose, sucrose, lactose and the like.
- the salt of the ulsan-type triterpene and its derivative is not particularly limited, but is preferably one that can be ingested orally.
- examples of such salts include alkali metal salts such as sodium and potassium; alkaline earth metal salts such as calcium; ammonium salts and the like.
- At least one compound selected from the group consisting of acetylursolic acid, ursolic acid, ursolic acid glycosides and salts thereof is preferable. Above all, it is more preferable to contain acetylursolic acid and / or a salt thereof as an active ingredient from the viewpoint of having a high effect of improving the intestinal barrier function.
- acetyl ursolic acid 3-acetyl ursolic acid in which an acetyl group is bonded to the hydroxyl group at the 3-position of ursolic acid is preferable.
- the composition for improving the intestinal barrier function of the present invention more preferably contains 3-acetylursolic acid and / or a salt thereof as an active ingredient.
- 3-Acetyl ursolic acid is a compound represented by the following formula (1).
- the ulsan-type triterpenes, derivatives thereof and salts thereof contained in the composition for improving the intestinal barrier function of the present invention are not particularly limited by their origins and production methods.
- a plant-derived one extracted from a plant may be used, or a synthetically obtained one may be used.
- a commercially available product can also be used.
- plant-derived acetylursolic acid, ursoric acid, ursoric acid glycosides and their salts are derived from Rosaceae Aronia, Rosaceae Rubus, Rosaceae Syzygium, Rosaceae.
- the origins of 3-acetylursoric acid and its salts are as follows: Rosaceae Aronia, Rosaceae Rubus, Rosaceae Chaenomeles, Rosaceae Mokkok (Ternstromia), Holly. It is preferably at least one plant selected from the group consisting of the genus Holly (Ilex), the genus Ficus of the family Rosaceae and the genus Eucommia of the family Rosaceae.
- the origin of 3-acetylursoric acid and its salt is a plant of the genus Aronia of the family Rosaceae
- the plants of the genus Aronia of the family Rosaceae are Aronia arbutifolia and Aronia melanocalpa. It is preferably at least one selected from the group consisting of melanocarpa) and Aronia x prunifolia.
- Aronia melanocarpa Aronia melanocarpa
- Aronia melanocarpa is also called a chokeberry (Chokeberry) or a black chokeberry (Black Chokeberry) as another name.
- a raw material containing the compound of the active ingredient in the present invention can be extracted with hydrous ethanol, the extract is concentrated, and then column purification is performed to obtain the compound of the active ingredient in the present invention. it can.
- the compound of the active ingredient in the present invention is an ingredient contained in the above-mentioned plants, and has few side effects and high safety even when ingested for a long period of time. According to the present invention, it is possible to provide a composition for improving the intestinal barrier function containing a substance having few side effects and high safety as an active ingredient even when ingested for a long period of time.
- the intestinal barrier function refers to a function of preventing the invasion (permeation) of foreign substances (for example, toxins such as endotoxin, inflammatory substances, undigested substances, etc.) from outside the intestinal epithelial cells (inside the intestinal tract) into the body. ..
- the intestine includes the large intestine and the small intestine.
- the state in which the invasion of foreign substances from the outside of the intestinal epithelial cells into the body is promoted as compared with the normal state is called the state in which the permeability of the foreign substances in the intestinal epithelial cells is increased (enhanced).
- the improvement of the intestinal barrier function means both suppressing the increase in the permeability of the foreign substance in the intestinal epithelial cells and decreasing the permeability of the foreign substance in the intestinal epithelial cells. Further, in the present invention, the improvement of the intestinal barrier function is also used in the sense of suppressing the decrease in the intestinal barrier function and enhancing the decreased intestinal barrier function. For example, normalizing or strengthening tight junctions that adhere intestinal epithelial cells to each other improves intestinal barrier function. In one aspect, the intestinal barrier function improving composition of the present invention can be used to improve intestinal barrier function by normalizing or strengthening tight junctions in intestinal epithelial cells.
- the effect of improving the intestinal barrier function is shown, for example, by increasing the electrical resistance value (transpithelial electrical resistance (TEER)) of the intestinal epithelial cells or by suppressing the decrease in TER.
- the substance that raises or suppresses the decrease of TEER has an action of normalizing or strengthening tight junctions in intestinal epithelial cells.
- the effect of improving the intestinal barrier function is also shown by reducing the amount of substances that permeate the intestinal epithelial cells from the intestinal side to the inside of the body.
- a person skilled in the art can select a specific evaluation method for the effect of improving the intestinal barrier function according to the purpose.
- a method of measuring TEER can be used using an intestinal permeation model using human intestinal epithelial cells (Caco-2 cells). Specifically, inflammatory cytokines (TNF ⁇ , IL-1 ⁇ , IFN ⁇ , etc.) are added to Caco-2 monolayer cultured cells to create a state in which the intestinal barrier function can be disrupted in humans, and the addition of the test substance causes the above. If the decrease in TEER is suppressed as compared with the case where the substance is not added, it can be evaluated that the test substance has an effect of improving the intestinal barrier function.
- inflammatory cytokines TNF ⁇ , IL-1 ⁇ , IFN ⁇ , etc.
- acetyl ursolic acid and ursolic acid suppress the decrease in TEER due to the addition of inflammatory cytokines in the intestinal permeation model using Caco-2, and have an excellent effect of improving the intestinal barrier function. It has been shown.
- acetyl ursolic acid showed a more excellent effect of improving the intestinal barrier function as compared with ursolic acid having no acetyl group.
- composition for improving the intestinal barrier function of the present invention exerts the effect of improving the intestinal barrier function by containing at least one compound selected from the group consisting of ulsan-type triterpenes, derivatives thereof and salts thereof as an active ingredient. Therefore, the composition for improving the intestinal barrier function of the present invention is useful for preventing or improving a state or disease in which improvement of the intestinal barrier function is effective for prevention or improvement thereof, for example, a state or disease associated with an abnormality in the intestinal barrier function.
- Abnormalities in intestinal barrier function include a decrease in intestinal barrier function.
- Conditions or diseases associated with abnormalities in the intestinal barrier function include conditions or diseases caused by abnormalities in the intestinal barrier function, or conditions or diseases associated with abnormalities in the intestinal barrier function.
- Conditions or diseases associated with such abnormalities in intestinal barrier function include, for example, inflammatory bowel disease, irritable bowel syndrome, systemic autoimmune disease (rheumatoid arthritis, erythematosus, etc.), allergy (food allergy, pollinosis, etc.). , Lifestyle diseases (obesity, type 1 or type 2 diabetes, hypertension, hyperlipidemia, non-alcoholic fatty liver disease (NAFLD), arteriosclerosis, etc.), etc. (for example, Camilleri et al., Am J. Physiol Gastrointest Live Physiol 303: G775-G785, 2012; Mu et al., Front. Immunol., Vol.8, Article 598, 2017; Bischoff et al., BMC14, BMC.
- compositions for improving the intestinal barrier function of the present invention have an action of improving the condition of the intestine by improving the intestinal barrier function. Therefore, the composition for improving the intestinal barrier function of the present invention can adjust the condition of the intestine by improving the intestinal barrier function, and is useful for preventing or improving the above-mentioned intestinal symptoms.
- the composition for improving intestinal barrier function of the present invention can be used for intestinal regulation (for example, to prevent or improve diarrhea, constipation, abdominal discomfort, etc.).
- abnormalities in the intestinal barrier function are also associated with lifestyle-related diseases and the like (for example, Bischoff et al., BMC Gastroenterology 2014 14: 189 above). Improving the intestinal barrier function is also effective in preventing or improving lifestyle-related diseases.
- Symptoms of lifestyle-related diseases include abnormal glucose metabolism, abnormal lipid metabolism, increased body fat, increased visceral fat, increased abdominal fat, and high blood pressure. Therefore, the composition for improving the intestinal barrier function of the present invention improves the glucose metabolism, improves the lipid metabolism, suppresses or increases the decrease or increase of fat such as body fat, visceral fat, and abdominal fat by improving the intestinal barrier function. It can also contribute to the improvement of blood pressure.
- prevention of a condition or disease refers to increasing the subject's resistance to the condition or disease, delaying or preventing the onset of the condition or disease.
- improvement of condition or disease means to recover the subject from the condition or disease, alleviate the symptoms of the condition or disease, delay the progression of the condition or disease, or prevent the subject. Etc. Recovery involves at least partial recovery.
- the composition of the present invention can be applied to either therapeutic use (medical use) or non-therapeutic use (non-medical use).
- the composition for improving the intestinal barrier function of the present invention can be provided, for example, in the form of foods and drinks, pharmaceuticals, quasi-drugs, feeds and the like, but is not limited thereto.
- the composition for improving the intestinal barrier function of the present invention may itself be a food or drink, a pharmaceutical product, a quasi-drug, a feed, or the like, or may be a formulation or a material such as an additive used for these. ..
- the composition for improving the intestinal barrier function of the present invention can be provided in the form of an agent as an example, but is not limited to this form.
- the agent can be provided as it is as a composition or as a composition containing the agent.
- the composition for improving the intestinal barrier function of the present invention can also be said to be an intestinal barrier function improving agent.
- the composition for improving the intestinal barrier function of the present invention is preferably an oral composition. According to the present invention, it is possible to provide an oral composition having an excellent action of improving the intestinal barrier function. Examples of the oral composition include foods and drinks, pharmaceuticals, and quasi-drugs, and foods and drinks are preferable.
- composition for improving the intestinal barrier function of the present invention may contain one or more components (other components) other than the compound of the active ingredient in the present invention described above, as long as the effects of the present invention are not impaired.
- other components may contain, for example, lactic acid bacteria, bifidobacteria, dietary fiber, polysaccharides and the like. Lactic acid bacteria and bifidobacteria are preferably bacteria that can be ingested orally.
- the dietary fiber may be either water-insoluble dietary fiber or water-soluble dietary fiber.
- water-insoluble dietary fiber include cellulose, lignin, hemicellulose, wheat bran, apple fiber, sweet potato fiber, and chitin.
- Water-soluble dietary fiber is roughly classified into a highly viscous substance and a low viscosity substance, and examples of the highly viscous substance include pectin, konjac mannan, alginic acid, sodium alginate, guar gum, and agar.
- the low-viscosity water-soluble dietary fiber contains 50% by weight or more of dietary fiber, is dissolved in room temperature water, and is a low-viscosity solution, approximately 5% by weight.
- a dietary fiber material that becomes a solution showing a viscosity of 20 mPa ⁇ s or less in an aqueous solution is referred to.
- Examples of low-viscosity substances of water-soluble dietary fiber include indigestible dextrin, polydextrose, guar gum decomposition product, and lites (polydextrose).
- any dietary fiber material satisfying the conditions of low viscosity and water solubility is included.
- One type of dietary fiber may be used, or two or more types may be used.
- polysaccharide examples include oligosaccharides such as galactooligosaccharide, xylooligosaccharide, mannooligosaccharide, agarooligosaccharide, fructooligosaccharide, isomaltooligosaccharide, and raffinose. These may be used alone or in combination of two or more.
- the composition for improving the intestinal barrier function of the present invention may contain any additive and any component.
- additives and ingredients can be selected according to the form of the composition for improving the intestinal barrier function, and generally those that can be used for foods and drinks, pharmaceuticals, quasi-drugs, feeds, etc. can be used. ..
- various additives that are orally acceptable for food and drink or pharmaceutically acceptable such as excipients, lubricants, stabilizers, dispersants, binders, diluents, flavors, sweeteners, flavors. , Colorants and the like can be exemplified.
- composition for improving the intestinal barrier function of the present invention when used as an oral composition, in addition to the above, vitamins, vitamin-like substances, proteins, amino acids, fats and oils, organic acids, as long as the effects of the present invention are not impaired.
- Carbohydrates, plant-derived raw materials, animal-derived raw materials, microorganisms, food and drink additives, pharmaceutical additives, and other orally ingestible components can be appropriately contained.
- components such as materials used for foods and drinks, pharmaceuticals, quasi-drugs, feeds, etc. can be appropriately blended depending on the intended use.
- the form of the composition for improving the intestinal barrier function of the present invention is not particularly limited as long as it has the effect of the present invention.
- the composition for improving the intestinal barrier function of the present invention when used as a food or drink, the compound of the active ingredient in the present invention is used as an ingredient that can be used in the food or drink (for example, a food or drink material, if necessary).
- Additives, etc. can be added to make various foods and drinks (food and drink compositions).
- Foods and drinks are not particularly limited, and examples thereof include general foods and drinks, health foods, foods with functional claims, foods for specified health use, foods for the sick, food additives, and raw materials thereof.
- the form of food and drink is not particularly limited, and oral solid preparations such as tablets, coated tablets, fine granules, granules, powders, pills, capsules (including soft capsules and hard capsules), dry syrups, and chewables. It can also be in various forms of oral liquid preparations such as oral liquid preparations and syrup preparations.
- the composition for improving the intestinal barrier function of the present invention is a drug or a quasi-drug
- an additive such as a pharmaceutically acceptable excipient is added to the compound of the active ingredient in the present invention. Therefore, it can be a drug (pharmaceutical composition) or a quasi-drug (quasi-drug composition) in various dosage forms. Oral administration is preferable as the administration form of the drug or quasi-drug.
- the dosage form of the drug or quasi-drug may be a dosage form suitable for the administration form.
- Dosage forms of oral drugs or non-pharmaceutical products include, for example, tablets, coated tablets, fine granules, granules, powders, pills, capsules (including soft capsules and hard capsules), dry syrups, chewables, etc.
- Oral solid preparations examples thereof include oral liquid preparations such as oral liquid preparations and syrup preparations.
- pills and granules in a dosage form with a conventional skin, such as sugar-coated tablets, gelatin encapsulants, enteric encapsulants, film coating agents, etc.
- the tablet may be a multi-layer tablet such as a double tablet.
- the production method thereof is not particularly limited, and the compound of the active ingredient in the present invention is generally used. It can be manufactured by various methods.
- the present invention also includes the use of at least one compound selected from the group consisting of ulsan-type triterpenes, derivatives thereof and salts thereof for producing a composition for improving intestinal barrier function.
- the composition for improving the intestinal barrier function of the present invention contains one or more of uses, types of active ingredients, above-mentioned effects, usage methods (for example, ingestion method, administration method), etc. in packaging, containers, instructions, etc. It may be displayed.
- the composition for improving the intestinal barrier function of the present invention may be labeled to have an action based on the intestinal barrier function improving action or the intestinal barrier function improving action.
- a display for example, a display indicating that it has an intestinal regulating action may be attached.
- the intestinal regulating action is not particularly limited as long as it is an intestinal regulating action based on the improvement of the intestinal barrier function.
- composition for improving the intestinal barrier function of the present invention may be provided with one or more of such indications.
- the content of the compound of the active ingredient in the composition for improving the intestinal barrier function of the present invention can be appropriately set according to the form of the composition and the like.
- the composition for improving the intestinal barrier function is an oral composition for foods and drinks, pharmaceuticals, quasi-drugs, etc.
- the total content of ulsan-type triterpenes, derivatives thereof and salts thereof is the composition. 0.0001% by weight or more is preferable, 0.01% by weight or more is more preferable, 80% by weight or less is preferable, and 20% by weight or less is more preferable.
- the total content of the ulsan-type triterpenes, derivatives thereof and salts thereof is preferably 0.0001 to 80% by weight, more preferably 0.01 to 20% by weight in the composition for improving the intestinal barrier function.
- the contents of ulsan-type triterpenes, derivatives thereof and salts thereof can be measured according to known methods, and for example, an HPLC method or the like can be used.
- the composition for improving the intestinal barrier function of the present invention can be ingested or administered by an appropriate method according to its form.
- the composition for improving the intestinal barrier function of the present invention is preferably orally administered or orally ingested.
- the ingestion amount (which can also be referred to as a dose) of the composition for improving the intestinal barrier function of the present invention is not particularly limited, and may be an amount that can obtain the effect of improving the intestinal barrier function. It may be set as appropriate according to the situation.
- the intake of the composition for improving the intestinal barrier function is the total intake of ulsan-type triterpenes, derivatives thereof and salts thereof per day.
- the amount may be 0.01 to 5000 mg, preferably 0.1 to 3000 mg, more preferably 1 to 1500 mg, still more preferably 1 to 1000 mg. It is preferable to orally administer or ingest the above amount, for example, once a day or in 2 to 3 divided doses.
- a human (adult) is allowed to ingest a composition for improving intestinal barrier function for the purpose of obtaining an effect of improving intestinal barrier function
- the total intake of ulsan-type triterpenes, derivatives thereof and salts thereof is determined.
- the composition for improving the intestinal barrier function can be orally ingested or administered to the subject so as to fall within the above range.
- the above intake may be the daily intake per 60 kg of body weight.
- the composition for improving the intestinal barrier function of the present invention is an oral composition for ingesting or administering to an adult the above amount of the compound of the active ingredient of the present invention per day per 60 kg of body weight. Good.
- the composition for improving the intestinal barrier function of the present invention is an amount that can obtain the desired effect of the present invention, that is, an effective amount of the active ingredient in the present invention, in consideration of its administration form, administration method and the like. It is preferable to contain the compound of.
- the composition for improving the intestinal barrier function is an oral composition such as a food or drink, an oral drug, etc.
- the ulsan-type triterpene and its derivative thereof are included in the daily intake of the composition per adult.
- the total content of these salts may be 0.01 to 5000 mg, preferably 0.1 to 3000 mg, more preferably 1 to 1500 mg, still more preferably 1 to 1000 mg per day.
- the compound of the active ingredient in the present invention is expected to enhance the effect of improving the intestinal barrier function by being continuously ingested (administered).
- the composition for improving the intestinal barrier function of the present invention is continuously ingested.
- the composition for improving the intestinal barrier function is preferably ingested continuously for one week or longer.
- the subject to which the composition for improving the intestinal barrier function of the present invention is administered or ingested is preferably a human or a non-human animal, more preferably a human or a non-human mammal, and even more preferably a human. ..
- an administration target in the present invention a target that requires or desires improvement of the intestinal barrier function is preferable.
- a subject having a deteriorated intestinal barrier function, a subject who desires prevention or improvement of a condition or disease related to the above-mentioned abnormality of the intestinal barrier function, a subject who needs prevention or improvement of the condition or disease, etc. are suitable subjects. Is listed as.
- the present invention also includes the following methods for improving the intestinal barrier function.
- a method for improving intestinal barrier function in which at least one compound selected from the group consisting of ulsan-type triterpenes, derivatives thereof and salts thereof is administered to a subject.
- the above methods and uses may be therapeutic and non-therapeutic methods and uses.
- “Non-therapeutic" is a concept that does not include medical practice, ie surgery, treatment or diagnosis.
- the compound of the active ingredient in the present invention can be administered (or ingested) to a subject in order to improve the intestinal barrier function of the subject.
- the compound of the active ingredient in the present invention is preferably used to improve intestinal barrier function by normalizing or enhancing tight junctions in intestinal epithelial cells.
- the dose of at least one compound selected from the group consisting of ulsan-type triterpenes, derivatives thereof and salts thereof may be an amount that can improve the intestinal barrier function, that is, an effective amount, and is not particularly limited.
- the route of administration is preferably oral administration.
- the above compound may be administered as it is, or a composition containing the same may be administered.
- the above-mentioned composition for improving the intestinal barrier function of the present invention can be administered.
- the compound of the active ingredient, the subject (administration subject), the administration method, the dose, and preferred embodiments thereof in the present invention are the same as those in the above-mentioned composition for improving the intestinal barrier function.
- the total dose of ulsan-type triterpenes, derivatives thereof and salts thereof may be 0.01 to 5000 mg per day, and 0. 1 to 3000 mg is preferable, 1 to 1500 mg is more preferable, and 1 to 1000 mg is further preferable.
- Example 1 A comparative evaluation of the improvement of intestinal barrier function was performed.
- Evaluation method for improving intestinal barrier function Caco-2 cells were cultured in Transwell (manufactured by Millicell) at 37 ° C. for 3 weeks using DMEM (Dulbecco's modified Eagle's medium). Medium was removed from the cultured Caco-2 cell plate, the wells were washed 3 times each with serum-free DMEM, and the wells were filled with the medium. After that, the transepithelial electrical resistance (TEER) of Caco-2 monolayer cells was measured by Millicell-ERS (manufactured by Millipore), and the cells judged to have a sufficient tight junction (TEER ⁇ 1000 ⁇ ⁇ cm 2).
- TEER transepithelial electrical resistance
- TNF ⁇ 40 ng / mL
- IL-1 ⁇ 20 ng / mL
- IFN ⁇ 10 ng / mL
- the sample was dissolved in dimethyl sulfoxide (DMSO) and then added to the test solution.
- DMSO dimethyl sulfoxide
- wells to which inflammatory cytokines (TNF ⁇ , IL-1 ⁇ and IFN ⁇ ) and samples were not added were provided as normal.
- wells to which inflammatory cytokines were added and samples were not added were provided as controls.
- TEER was measured again to evaluate whether the sample suppressed the decrease (decrease) of TEER due to inflammatory cytokines.
- composition for improving the intestinal barrier function of the present invention is useful in the fields of food and drink, pharmaceuticals and the like.
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Abstract
Description
〔1〕ウルサン型トリテルペン、その誘導体及びこれらの塩からなる群より選択される少なくとも1種の化合物を有効成分として含む腸管バリア機能改善用組成物。
〔2〕上記化合物が、アセチルウルソル酸、ウルソル酸、ウルソル酸配糖体及びこれらの塩からなる群より選択される少なくとも1種の化合物である上記〔1〕に記載の腸管バリア機能改善用組成物。
〔3〕上記化合物が、アセチルウルソル酸及び/又はその塩である上記〔1〕又は〔2〕に記載の腸管バリア機能改善用組成物。
〔4〕上記アセチルウルソル酸が、3-アセチルウルソル酸である上記〔2〕又は〔3〕に記載の腸管バリア機能改善用組成物。
〔5〕経口用組成物である、上記〔1〕~〔4〕のいずれかに記載の腸管バリア機能改善用組成物。
〔6〕上記経口用組成物が、飲食品、医薬品又は医薬部外品である上記〔5〕に記載の腸管バリア機能改善用組成物。
〔7〕整腸のために使用される上記〔1〕~〔6〕のいずれかに記載の腸管バリア機能改善用組成物。
〔8〕整腸作用を有する旨の表示を付した、上記〔1〕~〔7〕のいずれかに記載の腸管バリア機能改善用組成物。
〔9〕ウルサン型トリテルペン、その誘導体及びこれらの塩からなる群より選択される少なくとも1種の化合物の、腸管バリア機能を改善するための使用。
本明細書中、ウルサン型トリテルペン、その誘導体及びこれらの塩からなる群より選択される少なくとも1種の化合物を、本発明における有効成分の化合物ともいう。本発明においては、上記の化合物の1種又は2種以上を有効成分として使用することができる。
ウルサン型トリテルペン配糖体は、ウルサン型トリテルペンをアグリコンとする配糖体である。例えばウルソル酸配糖体は、ウルソル酸をアグリコンとする配糖体である。
アセチル基を有するウルサン型トリテルペンとして、アセチルウルソル酸、アセチルコロソリン酸、アセチルトルメンチック酸が挙げられる。本発明におけるウルサン型トリテルペン又はその誘導体として、アセチルウルソル酸、ウルソル酸、ウルソル酸配糖体が好ましい。ウルサン型トリテルペン配糖体を構成する糖として、単糖、二糖等が好ましい。単糖として、グルコース、ガラクトース、ラムノース、フルクトース、マンノース、アラビノース等が挙げられる。二糖として、マルトース、スクロース、ラクトース等が挙げられる。
例えば、植物由来のアセチルウルソル酸、ウルソル酸、ウルソル酸配糖体及びこれらの塩の由来は、バラ科アロニア属(Aronia)、バラ科キイチゴ属(Rubus)、バラ科ボケ属(Chaenomeles)、バラ科リンゴ属(Malus)、バラ科ナシ属(Pyrus)、ツツジ科クマコケモモ属(Arctostaphylos)、ツツジ科スノキ属(Vaccinium)、フトモモ科フトモモ属(Syzygium)、リンドウ科センブリ属(Swertia)、モッコク科モッコク属(Ternstroemia)、モチノキ科モチノキ属(Ilex)、クワ科イチジク属(Ficus)、モクセイ科オリーブ属(Olea)及びトチュウ科トチュウ属(Eucommia)からなる群から選択される少なくとも1種の植物であることが好ましい。
なお、アロニア・メラノカルパ(Aronia melanocarpa)は、別名称として、チョークベリー(Chokeberry)や、ブラックチョークベリー(Black Chokeberry)とも呼ばれる。植物から抽出する場合、例えば、本発明における有効成分の化合物を含む原料を含水エタノールで抽出し、抽出液を濃縮したのち、カラム精製を行うことで、本発明における有効成分の化合物を得ることができる。
当業者は、目的に応じて腸管バリア機能改善効果の具体的な評価方法を選択することができる。例えば後述する実施例に示したように、ヒト腸管上皮細胞(Caco-2細胞)を用いた腸管透過モデルを用いて、TEERを測定する方法を用いることができる。具体的には、Caco-2単層培養細胞に炎症性サイトカイン(TNFα、IL-1β、IFNγ等)を添加してヒトで腸管バリア機能を破綻させ得る状態を作り出し、被験物質の添加により、該物質を添加しない場合と比べてTEERの低下が抑制されれば、その被験物質には腸管バリア機能改善効果があると評価することができる。
実施例に示されるように、アセチルウルソル酸及びウルソル酸は、Caco-2を用いた腸管透過モデルにおいて、炎症性サイトカインの添加によるTEERの低下を抑制し、優れた腸管バリア機能改善効果を有することが示された。また、実施例に示されるように、アセチルウルソル酸は、アセチル基を有さないウルソル酸と比較してより優れた腸管バリア機能改善効果を示した。
本発明の腸管バリア機能改善用組成物は、例えば、飲食品、医薬品、医薬部外品、飼料等の形態で提供することができるが、これらに限定されるものではない。本発明の腸管バリア機能改善用組成物は、それ自体が飲食品、医薬品、医薬部外品、飼料等であってもよく、これらに使用される添加剤等の製剤、素材であってもよい。本発明の腸管バリア機能改善用組成物は、一例として、剤の形態で提供することができるが、本形態に限定されるものではない。当該剤をそのまま組成物として、又は、当該剤を含む組成物として提供することもできる。一態様において、本発明の腸管バリア機能改善用組成物は、腸管バリア機能改善剤ということもできる。
一態様において、本発明の腸管バリア機能改善用組成物は、好ましくは経口用組成物である。本発明によれば、優れた腸管バリア機能改善作用を有する経口用組成物を提供することができる。経口用組成物として、飲食品、医薬品、医薬部外品が挙げられ、好ましくは飲食品である。
一態様において、他の成分として、例えば、乳酸菌、ビフィズス菌、食物繊維、多糖類等を含有していてもよい。乳酸菌及びビフィズス菌は、経口的に摂取することができる菌であることが好ましい。
上記以外にも、その用途に応じて、飲食品、医薬品、医薬部外品、飼料等に使用される素材等の成分を適宜配合することができる。
一態様において、本発明の腸管バリア機能改善用組成物を飲食品とする場合、本発明における有効成分の化合物に、飲食品に使用可能な成分(例えば、飲食品素材、必要に応じて使用される添加剤等)を配合して、種々の飲食品(飲食品組成物)とすることができる。飲食品は特に限定されず、例えば、一般的な飲食品、健康食品、機能性表示食品、特定保健用食品、病者用食品、食品添加剤、これらの原料等が挙げられる。飲食品の形態も特に限定されず、錠剤、被覆錠剤、細粒剤、顆粒剤、散剤、丸剤、カプセル剤(ソフトカプセル剤、ハードカプセル剤を含む)、ドライシロップ剤、チュアブル剤等の経口用固形製剤;内服液剤、シロップ剤等の経口用液体製剤の各種製剤形態とすることもできる。
整腸作用は、腸管バリア機能の改善に基づく整腸作用であればよく、特に限定されない。上記整腸作用を有する旨の表示の一例として、「便秘又は下痢気味な方に」、「おなかの調子が気になる方に」、「おなかの不快感を感じやすい方に」、「便通を改善」、「便の状態を改善」、「排便回数を改善」、「排便量を改善」、「おなかすっきり」、「おなかの調子を整える」、「腸の調子を整える」、「おなかの不快感を改善」、「ガスの発生を和らげる」、「おなかの張りを和らげる」、「おなかのごろごろ感を和らげる」等が挙げられる。本発明の腸管バリア機能改善用組成物には、このような表示の1又は2以上が付されていてもよい。
ウルサン型トリテルペン、その誘導体及びこれらの塩の含有量は、公知の方法に従って測定することができ、例えば、HPLC法等を用いることができる。
本発明の腸管バリア機能改善用組成物の摂取量(投与量ということもできる)は特に限定されず、腸管バリア機能改善効果が得られるような量であればよく、投与形態、投与方法等に応じて適宜設定すればよい。一態様として、ヒト(成人)を対象に経口で投与する又は摂取させる場合、腸管バリア機能改善用組成物の摂取量は、ウルサン型トリテルペン、その誘導体及びこれらの塩の総摂取量として、1日あたり、0.01~5000mgであってよく、0.1~3000mgが好ましく、1~1500mgがより好ましく、1~1000mgがさらに好ましい。上記量を、例えば1日1回で又は2~3回に分けて経口投与又は摂取することが好ましい。一態様において、ヒト(成人)を対象に腸管バリア機能改善効果を得ることを目的として腸管バリア機能改善用組成物を摂取させる場合は、ウルサン型トリテルペン、その誘導体及びこれらの塩の総摂取量が上記範囲となるように、腸管バリア機能改善用組成物を対象に経口で摂取させる又は投与することができる。上記摂取量は、体重60kgあたり、1日あたりの摂取量であってよい。一態様において、本発明の腸管バリア機能改善用組成物は、成人に、体重60kgあたり、1日当たり上記量の本発明における有効成分の化合物を摂取させる又は投与するための経口用組成物であってよい。
ウルサン型トリテルペン、その誘導体及びこれらの塩からなる群より選択される少なくとも1種の化合物を対象に投与する、腸管バリア機能改善方法。
ウルサン型トリテルペン、その誘導体及びこれらの塩からなる群より選択される少なくとも1種の化合物の、腸管バリア機能を改善するための使用。
上記方法及び使用は、治療的な方法及び使用であってもよく、非治療的な方法及び使用であってもよい。「非治療的」とは、医療行為、すなわち手術、治療又は診断を含まない概念である。本発明における有効成分の化合物は、対象の腸管バリア機能を改善するために、対象に投与して(又は摂取させて)使用することができる。一態様において、上記の本発明における有効成分の化合物は、腸管上皮細胞におけるタイトジャンクションを正常化又は強化することによって腸管バリア機能を改善するために好適に使用される。
腸管バリア機能改善の比較評価を行った。
(腸管バリア機能改善作用の評価方法)
DMEM(ダルベッコ改変イーグル培地)を用いて、トランズウェル(Millicell社製)でCaco-2細胞を37℃で3週間培養した。培養したCaco-2細胞のプレートから培地を除去し、血清不含DMEMでウェルをそれぞれ3回洗浄し、その培地でウェルを満たした。その後、Millicell-ERS(ミリポア社製)によりCaco-2単層細胞の経上皮電気抵抗(TEER)を測定し、充分なタイトジャンクションが形成されていると判断される細胞(TEER≧1000Ω・cm2)を選抜して、次のスクリーニングに用いた。次いで、粘膜側、基底膜側両方の試験液(培地)に後記するサンプルとTNFα(40ng/mL)、IL-1β(20ng/mL)及びIFNγ(10ng/mL)とを添加し、48時間培養した。なお、サンプルは、ジメチルスルホキシド(DMSO)に溶解後、試験液に添加した。この際に、炎症性サイトカイン(TNFα、IL-1β及びIFNγ)及びサンプルを添加しないウェルをノーマルとして設けた。また、炎症性サイトカインを添加し、サンプルを添加しないウェルをコントロールとして設けた。培養後、再びTEERを測定し、炎症性サイトカインによるTEERの低下(減少)をサンプルが抑制するかを評価した。
(TEER低下抑制率の計算式)
TEER低下抑制率(%)=100×((サンプルを添加したウェルのTEER)-(コントロールのTEER))/((ノーマルのTEER)-(コントロールのTEER))
この評価系では、TEER低下抑制率(%)が高いほど、腸管バリア機能改善作用が高い。
Claims (9)
- ウルサン型トリテルペン、その誘導体及びこれらの塩からなる群より選択される少なくとも1種の化合物を有効成分として含む腸管バリア機能改善用組成物。
- 前記化合物が、アセチルウルソル酸、ウルソル酸、ウルソル酸配糖体及びこれらの塩からなる群より選択される少なくとも1種の化合物である請求項1に記載の腸管バリア機能改善用組成物。
- 前記化合物が、アセチルウルソル酸及び/又はその塩である請求項1又は2に記載の腸管バリア機能改善用組成物。
- 前記アセチルウルソル酸が、3-アセチルウルソル酸である請求項2又は3に記載の腸管バリア機能改善用組成物。
- 経口用組成物である、請求項1~4のいずれか一項に記載の腸管バリア機能改善用組成物。
- 前記経口用組成物が、飲食品、医薬品又は医薬部外品である請求項5に記載の腸管バリア機能改善用組成物。
- 整腸のために使用される請求項1~6のいずれか一項に記載の腸管バリア機能改善用組成物。
- 整腸作用を有する旨の表示を付した、請求項1~7のいずれか一項に記載の腸管バリア機能改善用組成物。
- ウルサン型トリテルペン、その誘導体及びこれらの塩からなる群より選択される少なくとも1種の化合物の、腸管バリア機能を改善するための使用。
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