WO2016170959A1 - 粘膜免疫賦活剤 - Google Patents
粘膜免疫賦活剤 Download PDFInfo
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- WO2016170959A1 WO2016170959A1 PCT/JP2016/061022 JP2016061022W WO2016170959A1 WO 2016170959 A1 WO2016170959 A1 WO 2016170959A1 JP 2016061022 W JP2016061022 W JP 2016061022W WO 2016170959 A1 WO2016170959 A1 WO 2016170959A1
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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
- A61K31/20—Carboxylic acids, e.g. valproic acid having a carboxyl group bound to a chain of seven or more carbon atoms, e.g. stearic, palmitic, arachidic acids
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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
- A61K31/185—Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids
- A61K31/19—Carboxylic acids, e.g. valproic acid
- A61K31/191—Carboxylic acids, e.g. valproic acid having two or more hydroxy groups, e.g. gluconic 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
- A61K31/185—Acids; Anhydrides, halides or salts thereof, e.g. sulfur acids, imidic, hydrazonic or hydroximic acids
- A61K31/19—Carboxylic acids, e.g. valproic acid
- A61K31/20—Carboxylic acids, e.g. valproic acid having a carboxyl group bound to a chain of seven or more carbon atoms, e.g. stearic, palmitic, arachidic acids
- A61K31/201—Carboxylic acids, e.g. valproic acid having a carboxyl group bound to a chain of seven or more carbon atoms, e.g. stearic, palmitic, arachidic acids having one or two double bonds, e.g. oleic, linoleic acids
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K39/00—Medicinal preparations containing antigens or antibodies
- A61K39/39—Medicinal preparations containing antigens or antibodies characterised by the immunostimulating additives, e.g. chemical adjuvants
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P37/00—Drugs for immunological or allergic disorders
- A61P37/02—Immunomodulators
- A61P37/04—Immunostimulants
Definitions
- the present invention relates to a novel mucosal immunostimulator.
- M cells are found in the follicle-associated epithelium (FAE) that covers the gut-associated lymphoid tissues, such as Peyer's patches, and the lymphoid follicles, such as NALT. M cells are involved in the initiation of mucosal immune responses via antigen uptake and transcytosis in the intestinal tract (Non-patent Document 1). Glycoprotein 2 (GP2) is known as an M cell specific marker (Non-patent Document 2).
- Patent Document 1 discloses a mucosal immunostimulant containing as an active ingredient at least one bee product selected from royal jelly, propolis, and pollen cargo.
- an object of the present invention is to provide a novel mucosal immunostimulator.
- the present invention relates to a mucosal immunostimulant containing as an active ingredient at least one selected from the group consisting of saturated fatty acids represented by the following general formula (1) and salts thereof.
- R-COOH (1) [In the general formula (1), R represents an alkyl group having 7 to 11 carbon atoms substituted with one hydroxy group. ]
- the mucosal immunity stimulating agent of the present invention contains at least one selected from the group consisting of the saturated fatty acid represented by the above general formula (1) and a salt thereof as an active ingredient, it can activate mucosal immunity. it can.
- the saturated fatty acid is preferably a nonyl group in which R is substituted with one hydroxy group.
- the saturated fatty acid is more preferably 3-hydroxydecanoic acid and 10-hydroxydecanoic acid. Thereby, mucosal immunity can be further activated.
- the saturated fatty acid is more preferably 10-hydroxydecanoic acid.
- 10-Hydroxydecanoic acid is also known as a component of royal jelly, is highly safe for living bodies, and can be taken continuously for a long period of time.
- the mucosal immunostimulant of the present invention induces differentiation of M cells by using as an active ingredient at least one selected from the group consisting of saturated fatty acids represented by the above general formula (1) and salts thereof. be able to. At least a part of the mechanism of action by the mucosal immunostimulant of the present invention is based on this differentiation induction of M cells.
- the present invention also relates to a food composition for utilizing mucosal immunity comprising the above mucosal immunity stimulating agent.
- the food composition includes foods, health foods, functional labeling foods, dietary supplements, supplements, and foods for specified health use.
- the above-mentioned food composition contains the mucosal immunity stimulating agent of the present invention, it has a function of activating mucosal immunity and is suitably used for mucosal immunity utilization.
- the present invention further relates to an adjuvant containing the above mucosal immunostimulator.
- the mucosal immunostimulant can be suitably used as an adjuvant because it can induce differentiation of M cells involved in the initiation of mucosal immune response.
- the present invention further relates to a vaccine preparation containing the above-mentioned adjuvant.
- the present invention can also be regarded as a saturated fatty acid represented by the above general formula (1) or a salt thereof for use in mucosal immune activation.
- the present invention also regards an agent containing, as an active ingredient, at least one selected from the group consisting of the saturated fatty acid represented by the above general formula (1) or a salt thereof for use in mucosal immune activation. You can also.
- the present invention can also be regarded as the use of a saturated fatty acid represented by the above general formula (1) or a salt thereof in the production of a mucosal immunostimulator.
- the present invention requires an effective amount of a mucosal immunostimulant containing as an active ingredient at least one selected from the group consisting of the saturated fatty acid represented by the general formula (1) or a salt thereof. It can also be regarded as a method of stimulating mucosal immunity including a step of administering to a subject.
- a novel mucosal immunostimulator is provided. Since the mucosal immunostimulator of the present invention can induce differentiation of M cells, it is also useful as an adjuvant.
- the mucosal immunostimulant of the present invention contains, as an active ingredient, at least one selected from the group consisting of a saturated fatty acid represented by the general formula (1) (hereinafter also simply referred to as “saturated fatty acid”) and salts thereof. contains. R-COOH (1)
- R represents a C 7-11 alkyl group substituted with one hydroxy group.
- alkyl group having 7 to 11 carbon atoms in R examples include heptyl group, octyl group, nonyl group, decyl group and undecyl group.
- One hydroxy group in R may be substituted with any hydrogen atom in these alkyl groups.
- R is preferably a nonyl group substituted with one hydroxy group.
- saturated fatty acids in this case include 2-hydroxydecanoic acid, 3-hydroxydecanoic acid, 4-hydroxydecanoic acid, 5-hydroxydecanoic acid, 6-hydroxydecanoic acid, 7-hydroxydecanoic acid, 8-hydroxydecanoic acid, Mention may be made of 9-hydroxydecanoic acid and 10-hydroxydecanoic acid.
- saturated fatty acid 3-hydroxydecanoic acid and 10-hydroxydecanoic acid are more preferable, and 10-hydroxydecanoic acid is still more preferable.
- the saturated fatty acid may be either R-form or S-form when an optical isomer exists.
- the saturated fatty acid may be a salt with an alkali metal, alkaline earth metal, other metal, ammonium or the like that is acceptable for food use or pharmaceutical use.
- Specific examples include potassium salts, sodium salts, calcium salts, and magnesium salts.
- the above-mentioned saturated fatty acids and salts thereof are obtained by alkali-melting ricinoleic acid contained in castor oil (for example, Eur. J. Lipid Sci. Technol., 2010, 112 (1), pp. 10-30. J. Am. Oil Chem. Soc., 1974, 51 (3), pp. 65-71), etc., can be produced according to conventional methods. Moreover, you may use what is marketed.
- the mucosal immunostimulant of the present invention may contain the above-mentioned saturated fatty acid and its salt alone or in combination of two or more.
- the mucosal immunostimulant of the present invention may contain only the above active ingredients, and may further contain other ingredients as long as the effects of the present invention are not hindered.
- other components include pharmaceutically acceptable components (for example, excipients, binders, lubricants, disintegrants, emulsifiers, surfactants, bases, solubilizers, suspending agents).
- Food-acceptable ingredients eg minerals, vitamins, flavonoids, quinones, polyphenols, amino acids, nucleic acids, essential fatty acids, cooling agents, binders, sweeteners, disintegrants, lubricants, colorants Fragrances, stabilizers, preservatives, sustained release regulators, surfactants, solubilizers, wetting agents).
- the mucosal immunostimulant of the present invention can be used at a dose of 1 mg or more and 10 g or less per day for an adult with a body weight of 60 kg, preferably in a dose of 5 mg or more and 8 g or less, preferably 10 mg or more and 3 g or less. More preferably 15 mg to 1.5 g, more preferably 20 mg to 1 g, and even more preferably 22 mg to 500 mg. Moreover, it is particularly preferable to use at a dose of 24 mg or more and 250 mg or less.
- the dose when the mucosal immunostimulant of the present invention is used in children is, for example, 3/5 dose for adults under 6 to 13 years old, 2/5 dose for adults under 1 to 6 years old, and under 1 year old It is good also as 1/5 dose.
- the dose can be appropriately set within the above-mentioned range depending on factors such as the health condition of the person who ingests, the administration method, and combinations with other agents.
- the mucosal immunostimulant of the present invention may be administered orally (ingested) or parenterally (for example, administered intranasally).
- the mucosal immunostimulant of the present invention may be administered once a day, or divided into a plurality of times such as twice a day or three times a day, as long as the amount of active ingredient per day is within the above-mentioned range. May be administered.
- it is preferable that the mucosal immunostimulant of the present invention is administered continuously. By continuously administering, mucosal immunity activation effect is more remarkably exhibited.
- the mucosal immunostimulant of the present invention may be any shape such as solid, liquid, paste and the like.
- the form of the mucosal immunostimulant of the present invention may be, for example, a plain tablet, sugar-coated tablet, granule, powder, tablet, capsule (hard capsule, soft capsule, seamless capsule).
- the mucosal immunostimulant of the present invention can be prepared, for example, by mixing a saturated fatty acid that is an active ingredient, or a salt thereof and, if necessary, other ingredients and forming the dosage form.
- the mucosal immunostimulant of the present invention can be used as a pharmaceutical product, quasi-drug and food composition itself, and added to a pharmaceutical product, quasi-drug and food composition.
- the food composition is preferably a food that emphasizes the tertiary function (physical condition control function) of the food. Examples of the food in which the tertiary function of the food is emphasized include health food, functional indication food, nutritional supplement, supplement, and food for specified health use.
- the pharmaceutical, quasi-drug or food composition comprising the mucosal immunostimulator of the present invention, or the pharmaceutical, quasi-drug or food composition containing the mucosal immunostimulator of the present invention may be mucosal immunostimulatory.
- the content of the mucosal immunostimulant of the present invention in the pharmaceutical, quasi-drug and food composition is such that the amount of active ingredient taken per day falls within the above-mentioned range. What is necessary is just to set suitably according to the kind etc. of.
- the form of the food composition is not particularly limited.
- beverages coffee, juice, tea beverages, etc.
- spreads custard cream etc.
- pastes fruit paste etc.
- pastries chocolate, donuts, pie, cream puffs, gum, jelly, candy, Cookies, cakes, pudding, etc.
- Japanese confectionery Daifuku, rice cake, bun, castella, anmitsu, mutton etc.
- Ice confectionery ice cream, popsicle, sherbet, etc.
- Foods curry, beef bowl, miso soup, miso soup Soup, meat sauce, pasta, pickles, jam, etc.
- seasonings dressing, sprinkle, umami seasoning, soup It may be a arsenide).
- the mucosal immunostimulant of the present invention is used as a food in which the tertiary function of the food is emphasized (for example, health food, functional indication food, dietary supplement, supplement or food for specified health use), or the tertiary function of the food
- the form of the food in which the tertiary function of the food is emphasized includes, for example, uncoated tablets, sugar-coated tablets, granules, powders, tablets, capsules ( Hard capsule, soft capsule, seamless capsule).
- the form of the pharmaceutical product or quasi-drug is not particularly limited. , Sugar-coated tablets, granules, powders, tablets, capsules (hard capsules, soft capsules, seamless capsules).
- the production method of the pharmaceutical, quasi-drug or food composition to which the mucosal immunostimulant of the present invention is added is not particularly limited, and can be appropriately followed by known methods.
- the mucosal immunostimulant of the present invention is mixed with the intermediate product or final product in the production process of a pharmaceutical product, quasi-drug or food composition, etc.
- a composition can be obtained.
- the present invention described above can also be regarded as a saturated fatty acid represented by the above general formula (1) or a salt thereof for use in mucosal immune activation.
- the present invention also regards an agent containing, as an active ingredient, at least one selected from the group consisting of the saturated fatty acid represented by the above general formula (1) or a salt thereof for use in mucosal immune activation. You can also.
- the present invention can also be regarded as the use of the saturated fatty acid represented by the above general formula (1) or a salt thereof in the production of a mucosal immunostimulator.
- the present invention described above also provides an effective amount of a mucosal immunostimulant containing as an active ingredient at least one selected from the group consisting of the saturated fatty acid represented by the general formula (1) or a salt thereof, It can also be regarded as a method of stimulating mucosal immunity including a step of administering to a subject in need.
- the subject may be a rodent, ungulate, meat, marsupial, and primate.
- the subject is preferably a mammal such as a cynomolgus monkey or a human, and more preferably a human.
- the mucosal immunostimulant of the present invention can also be used as an adjuvant. At least part of the mechanism of action by the adjuvants of the present invention is based on inducing differentiation of M cells involved in the initiation of mucosal immune responses.
- the adjuvant according to the present embodiment may include the mucosal immunostimulator, or may be composed of the mucosal immunostimulator.
- the vaccine preparation of the present invention contains the above adjuvant.
- the adjuvant of the present invention can be combined with various immunogens to form a vaccine preparation.
- the vaccine preparation of the present invention may be a mixture of an adjuvant and an immunogen, or the adjuvant and the immunogen are separated from each other, and may be mixed at the time of administration or administered separately.
- the vaccine preparation of the present invention may be used for treatment or for prevention.
- the immunogen combined with the adjuvant of the present invention is not particularly limited as long as it is an antigen that elicits an immune response against mammals such as humans.
- immunogens include influenza virus, rotavirus, adenovirus, norovirus, measles virus, rubella virus, mumps virus, AIDS virus, hepatitis virus, poliovirus, rabies virus, pertussis, diphtheria, Helicobacter One or more pathogenic microorganisms selected from the group consisting of Helicobacter pylori, hemorrhagic Escherichia coli (EHEC), Chlamydia parasite, Mycoplasma parasite, Malaria parasite, Coccidium parasite, and Schistosoma japonicum and antigens derived therefrom, prion protein, etc. Can be mentioned. These immunogens may be inactivated or non-inactivated.
- the amount ratio of the immunogen and the adjuvant in the vaccine preparation of the present invention can be appropriately set according to the type of immunogen used, the purpose of the vaccine preparation, etc., for example, 1: 0.0001 to 1:10, 000 (weight ratio), preferably 1: 0.1 to 1:10 (weight ratio).
- the shape of the vaccine preparation of the present invention may be liquid or powder.
- the form of the vaccine preparation of the present invention is not particularly limited, and may be, for example, a plain tablet, a sugar-coated tablet, a granule, a powder, a tablet, or a capsule (hard capsule, soft capsule, seamless capsule).
- the vaccine preparation of the present invention may contain known stabilizers and preservatives.
- the vaccine preparation of the present invention can be produced by a known method.
- the vaccine preparation of the present invention may be inoculated orally and may be ingested nasally.
- the vaccine preparation of the present invention can be administered by a method comprising the steps of administering an adjuvant to a subject and administering an immunogen to the subject. Administration of the adjuvant and administration of the immunogen may be performed simultaneously or separately. Further, for example, the adjuvant can be administered in advance, and then the immunogen can be administered. Further, the immunogen can be administered in a timely manner while continuously administering the adjuvant.
- the vaccine preparation of the present invention is preferably used so that, for example, an immunogen is administered after continuously administering an adjuvant. Thereby, induction of an immune response can be further enhanced.
- the aspect of continuously administering the adjuvant include, for example, administration of an effective amount once a day for 3 days or more, preferably 7 days or more, more preferably 14 days or more, still more preferably 21 days or more, To continue.
- the dose may be divided into a plurality of doses such as twice a day, three times a day, etc. within the range of the effective amount per day.
- the effective amount of the adjuvant is, in terms of the amount of the active ingredient, a dose of 1 mg to 10 g per day for an adult weighing 60 kg, preferably 5 mg to 8 g, preferably 10 mg to 3 g. More preferably, the dose is 15 mg or more and 1.5 g or less, still more preferably 20 mg or more and 1 g or less, even more preferably 22 mg or more and 500 mg or less, and even more preferably 24 mg or more and 250 mg. Particularly preferred are the following doses.
- the effective dose for use in children is, for example, 3/5 doses for adults under 6 to 13 years old, 2/5 doses for adults under 1 to 6 years old, and 1/5 dose under 1 year old Also good.
- the dose can be appropriately set within the above-mentioned range depending on factors such as the health condition of the person who ingests, the administration method, and combinations with other agents.
- FACS Fluorescence activated cell classification
- Each of the above fatty acids was prepared as a DMSO solution (10 mM). After seeding Caco-2 cells in a 6-well plate to form a monolayer, each fatty acid was added to a final concentration of 100 ⁇ M. As a control, the same amount of DMSO was added. The medium is as described above. After the addition, the cells were cultured at 37 ° C. in the presence of 5% CO 2 for 3 days. After culturing, the cells were collected with 1 mM EDTA ⁇ 2Na / PBS ( ⁇ ) (pH 7.2) and stained with a rabbit anti-GP2 antibody (IMGENEX) and an Alexa488-labeled anti-rabbit antibody (Molecular probes). The stained cells were analyzed by FACS (manufactured by BECKMAN COULTER), and the expression level of GP2 was quantified.
- FIG. 1 shows the FACS histogram.
- 10-hydroxydecanoic acid (FIG. 1 (a)) and (+/ ⁇ )-3-hydroxydecanoic acid (FIG. 1 (b)) induced GP2 expression.
- 10-hydroxydecanoic acid induced GP2 expression more strongly.
- (9R) -9,10-dihydroxydecanoic acid (FIG. 1 (c)) and 10-hydroxy-2- (E) -decenoic acid (FIG. 1 (d)) did not induce GP2 expression.
- Transcoil inserts (6.5 mm Transwell, manufactured by Corning) were seeded with 2 ⁇ 10 5 cells of Caco-2 cells to form a monolayer, and then 10-hydroxydecanoic acid (terminal) was formed from the apical side of the monolayer. The concentration was 100 ⁇ M), and the cells were cultured at 37 ° C. in the presence of 5% CO 2 for 3 days. After culturing, the entire transwell insert membrane was cut and the cell morphology was observed with an electron microscope (manufactured by JEOL).
- M cells are characterized by morphologically shorter apical microvilli than neighboring epithelial cells. As shown by the arrows in FIG. 2, cells with short microvilli were observed by the action of 10-hydroxydecanoic acid. From this result, it is considered that Caco-2 cells were morphologically changed to M cell-like cells by the action of 10-hydroxydecanoic acid.
- Test Example 2 M cell differentiation induction test-in vivo test
- DMSO DMSO
- PBS PBS
- Three male cynomolgus monkeys Macaca fascicularis (3 to 4 years old at the start of the test, 3.53 to 4.36 kg body weight at the start of the test) were used as test animals.
- a fine atomizer Nasal (product number: FAN020, manufacturer / distributor: Yoshikawa Kasei Co., Ltd.)
- about 0.1 mL of the test solution was sprayed on the left and right nasal cavities of cynomolgus monkeys.
- nasopharyngeal mucosa at the pharyngeal tonsil site was collected.
- the collected nasopharyngeal mucosa was fluorescently stained with Alexa555-labeled anti-GP2 antibody (IMGENEX) or Alexa555-labeled anti-GP2 antibody (Abcam) and the fluorescence image was observed with an all-in-one fluorescence microscope BZ-9000 (Keyence). did.
- DAPI staining is used together in the observation of the fluorescence image.
- Fig. 3 shows a fluorescent immunohistochemical staining photograph.
- the lightness and darkness are reversed in order to improve visibility.
- GP2-positive cells black portions illustrated by arrows in FIG. 3
- GP2-positive cells were observed in the form of nasopharyngeal mucosa.
- the control such an increase in GP2-positive cells was not observed.
- capsule A tablets and capsule B tablets are shown in Table 1 below.
- Test group three male cynomolgus monkeys (3 to 6 years old at the start of the test, body weight of 3.0 to 6.0 kg at the start of the test) were orally administered according to the schedule shown in Table 1 below (capsule A tablets). And capsule B tablets are not administered) (hereinafter, subject group).
- cynomolgus monkeys were dissected and the intestinal mucosa was collected.
- the collected intestinal mucosa was stained with fluorescent immunohistochemistry with Alexa555-labeled anti-GP2 antibody (manufactured by IMGENEX) or Alexa555-labeled anti-GP2 antibody (manufactured by Abcam), and the fluorescence image was observed with an all-in-one fluorescence microscope BZ-9000 (manufactured by Keyence). .
- DAPI staining is used in combination for the observation of the fluorescence image.
- FIG. 4 An example of a fluorescent immunohistochemical staining photograph is shown in FIG. In FIG. 4, the brightness is reversed in order to improve the visibility.
- the test group sensitized with the antigen about every 3 days while continuously ingesting 10-hydroxydecanoic acid once a day is composed of GP2-positive cells (the black color illustrated by the arrow in FIG. 4). Were observed on the intestinal mucosa.
- the control group sensitized with the antigen only about every 3 days, such an increase in GP2-positive cells was not observed.
- Test Example 4 Measurement of antibody titer
- Test Example 3 The stool of the cynomolgus monkey bred in Test Example 3 was collected, and the anti-Fetuin IgA antibody titer, anti-poliovirus IgA antibody titer, and anti-influenza virus IgA antibody titer in the stool were measured by ELISA.
- Fetin antigen (manufactured by Sigma) was dissolved in antigen buffer (50 mmol / L Tris-HCl (pH 8.0), 10 mmol / L MgCl 2 , 0.1% Tween 80) to 100 ⁇ g / mL. This antigen was added to Nunc MaxiSorp (registered trademark) flat-bottom 96-well plate to prepare an antigen plate. Influenza virus H1N1 antigen (11,000 HA Unit) and poliovirus antigen type III (0.67 ⁇ 10 8 TCID 50 ) were diluted with 25 mL of antigen buffer, and antigen plates were similarly prepared. In addition, the masking was over night reaction at 200 ⁇ l / well at 4 ° C.
- the sample buffer (0.1% sodium azide, 1 mmol / L EDTA ⁇ 2Na, 0.05% Tween20, 5% nonfat skim milk, 1 mmol / L phenylmethylsulfluorylel (1% / 4 to the stool sample) (PMSF) in PBS ( ⁇ ) (pH 7.2)) was added. After centrifugation at 13,000 ⁇ g for 5 minutes at 4 ° C., the supernatant was recovered and used as an ELISA sample. ELISA samples were stored in an ice-freezer. At the time of measurement, the sample for ELISA was diluted 10-fold and 100-fold with PBS (-).
- the secondary antibody was prepared by dissolving BSA in the secondary antibody Buffer (0.5M Tris-HCl, 1.75% NaCl) so as to be 1%, and using the buffer, the following antibodies (a) and (b) were dissolved: It was prepared by diluting 5000 times.
- B Peroxidase-Labeled Affinity Purified Antibodies to Money IgA (alpha) (Cat. No. 074-11-011, KPL)
- B Goat Anti-monkey IgA (alpha-chain specific) -peroxidase (Affinity purified) (Cat. No. 70041, Alpha diagnostic international)
- Substrate solution (2.68 mg TMBZ, 1.05 ⁇ l 35% hydrogen peroxide solution, 7 mL EDTA ⁇ 2Na (2 mM) was added to each well by 50 ⁇ l. Finally, 50 ⁇ l of 0.3N H 2 SO 4 was added to each well to stop the reaction. Thereafter, the absorbance (450 nm / 630 nm) was measured.
- Fig. 5 shows the anti-Fetuin IgA antibody titer, anti-poliovirus IgA antibody titer, and anti-influenza virus IgA antibody titer in stool.
- FIG. 5 shows that in the test group sensitized with the antigen about every 3 days while continuously ingesting 10-hydroxydecanoic acid once a day, anti-Fetuin IgA antibody titer, anti-poliovirus IgA antibody titer, And an increase in anti-influenza virus IgA antibody titer was observed.
- such an increase in antibody titer was not observed in the control group sensitized with the antigen only about every 3 days.
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Abstract
Description
R-COOH (1)
[一般式(1)中、Rは、1つのヒドロキシ基で置換された炭素数7~11のアルキル基を示す。]
R-COOH (1)
一般式(1)中、Rは、1つのヒドロキシ基で置換された炭素数7~11のアルキル基を示す。
本発明の粘膜免疫賦活剤は、アジュバントとしても使用できる。本発明のアジュバントによる作用メカニズムの少なくとも一部は、粘膜免疫応答の開始に関わるM細胞の分化を誘導することに基づくものである。本実施形態に係るアジュバントは、上記粘膜免疫賦活剤を含むものであってもよく、上記粘膜免疫賦活剤からなるものであってもよい。
〔細胞培養〕
インビトロM細胞モデルとして、ヒト腸管上皮細胞由来のCaco-2細胞を使用した。Caco-2細胞は、EMEM培地(日水製薬株式会社製)に2%ウシ胎児血清(FCS:CANSERA INTERNATIONAL社製)、2mMグルタミン(和光純薬株式会社製)、及び0.1mM非必須アミノ酸(Gibco社製)を補充した培地を使用して、37℃、5%CO2存在下で培養した。細胞は、対数増殖の範囲内(2.0×105~1.0×106cells/mL)で継代培養を行った。なお、細胞濃度はトリパンブルー染色法により、生細胞数と死細胞数とを力ウントして求めた。
各種脂肪酸(10-ヒドロキシデカン酸、(+/-)-3-ヒドロキシデカン酸、(9R)-9,10-ジヒドロキシデカン酸、10-ヒドロキシ-2-(E)-デセン酸)によるM細胞の分化誘導を、GP2を指標としてFACSにより解析した。10-ヒドロキシデカン酸(10HDAA)は、SIGMA-ALDRICH社製のものを、(+/-)-3-ヒドロキシデカン酸(3HDAA)は、SIGMA-ALDRICH社製のものを、10-ヒドロキシ-2-(E)-デセン酸(10-HDA)は、和光純薬工業株式会社製のものを、それぞれ用いた。(9R)-9,10-ジヒドロキシデカン酸(DDA-11)は、Tetrahedron:Asymmetry,2009年,20,pp457-460の方法を基に(4R)-4-(2-Hydroxyethyl)-2,2-dimethyl-1,3-dioxolaneをトシル化し、Grignard反応により5-Bromo-1-penteneで鎖を延長後、オゾン分解、Diethylphosphonoicacid ethylesterとの Wittig反応、接触水素化反応による水素添加、酢酸処理によるアセトナイドの除去、水酸化カリウム処理によるエチル基の除去を経て合成し、用いた。
トランズウェルインサート(6.5mm Transwell,コーニング社製)にCaco-2細胞を2×105cells播種し、単層膜を形成させた後、単層膜の頂端側から10-ヒドロキシデカン酸(終濃度100μM)を作用させ、37℃、5%CO2存在下で3日間培養した。培養後、トランズウェルインサートの膜ごと切断し、電子顕微鏡(JEOL社製)で細胞形態を観察した。
〔試験方法〕
10-ヒドロキシデカン酸のDMSO溶液(10mM)を、PBS(-)で100倍希釈して試験液を調製した。カニクイザル(Macaca fascicularis)の雄3匹(試験開始時3~4歳、試験開始時の体重3.53~4.36kg)を被験動物とした。ファインアトマイザー(ネイザル)(商品番号:FAN020,製造販売元:吉川化成株式会社)を用いて、上記試験液をカニクイザルの左右鼻腔に約0.1mLずつ噴霧した。対照として、PBS(-)を用いて同様の操作を行った。この操作を1日1回、3日間繰り返した後、4日目にカニクイザルを解剖し、咽頭扁桃部位の鼻咽頭粘膜を採取した。採取した鼻咽頭粘膜をAlexa555標識抗GP2抗体(IMGENEX社製)又はAlexa555標識抗GP2抗体(Abcam社製)で蛍光免疫組織染色し、オールインワン蛍光顕微鏡 BZ-9000(キーエンス社製)で蛍光像を観察した。なお、蛍光像の観察にあたり、DAPI染色を併用している。
〔試験方法〕
(カプセル剤の調製)
10-ヒドロキシデカン酸2.4mgのみを腸溶カプセルに充填し、10-ヒドロキシデカン酸入りカプセル剤(カプセルA錠)を調製した。10-ヒドロキシデカン酸2.4mgに加え、抗原としてFetuin(3mg)、不活化ポリオウィルス抗原(106 TCID50)及び不活化インフルエンザウイルス抗原(220_HA Units)を腸溶カプセルに充填し、10-ヒドロキシデカン酸と上記3種の抗原を含有するカプセル剤(カプセルB錠)を調製した。また、抗原としてFetuin(3mg)、不活化ポリオウィルス抗原(106 TCID50)及び不活化インフルエンザウイルス抗原(220_HA Units)を腸溶カプセルに充填し、上記3種の抗原を含有するカプセル剤(カプセルC錠)を調製した。
カニクイザル(Macaca fascicularis)の雄3頭(試験開始時3~6歳、試験開始時の体重3.0~6.0kg)を被験動物とし、上記カプセルA錠及びカプセルB錠を下記表1に示すスケジュールに従って経口投与した(1日1回1錠)(以下、試験群)。対照として、カニクイザルの雄3頭(試験開始時3~6歳、試験開始時の体重3.0~6.0kg)にカプセルC錠のみを下記表1に示スケジュールに従って経口投与した(カプセルA錠及びカプセルB錠は投与せず)(以下、対象群)。22日目にカニクイザルを解剖し、腸管粘膜を採取した。採取した腸管粘膜をAlexa555標識抗GP2抗体(IMGENEX社製)又はAlexa555標識抗GP2抗体(Abcam社製)で蛍光免疫組織染色し、オールインワン蛍光顕微鏡 BZ-9000(キーエンス社製)で蛍光像を観察した。なお、蛍光像の観察に当たり、DAPI染色を併用している。
〔試験方法〕
試験例3で飼育したカニクイザルの糞便を採取し、糞便中の抗Fetuin IgA抗体価、抗ポリオウィルスIgA抗体価、抗インフルエンザウイルスIgA抗体価を、ELISAにより測定した。
(a)Peroxidase-Labeled Affinity Purified antibody to Monkey IgA(alpha)(Cat.No.074-11-011,KPL)
(b)Goat Anti-monkey IgA(alpha-chain specifc)-peroxidase(Affinity purified)(Cat.No.70041,Alpha diagnostic international)
Claims (8)
- 下記一般式(1)で表される飽和脂肪酸、及びその塩からなる群より選択される少なくとも1種を有効成分として含有する粘膜免疫賦活剤。
R-COOH (1)
[一般式(1)中、Rは、1つのヒドロキシ基で置換された炭素数7~11のアルキル基を示す。] - 前記Rが、1つのヒドロキシ基で置換されたノニル基である、請求項1に記載の粘膜免疫賦活剤。
- 前記飽和脂肪酸が、3-ヒドロキシデカン酸及び10-ヒドロキシデカン酸である、請求項1に記載の粘膜免疫賦活剤。
- 前記飽和脂肪酸が、10-ヒドロキシデカン酸である、請求項1に記載の粘膜免疫賦活剤。
- M細胞の分化を誘導することに基づくものである、請求項1~4のいずれか一項に記載の粘膜免疫賦活剤。
- 請求項1~5のいずれか一項に記載の粘膜免疫賦活剤を含む、粘膜免疫賦活用食品組成物。
- 請求項1~5のいずれか一項に記載の粘膜免疫賦活剤を含むアジュバント。
- 請求項7に記載のアジュバントを含むワクチン製剤。
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CN201680022506.XA CN107530305B (zh) | 2015-04-22 | 2016-04-04 | 粘膜免疫激活剂 |
SG11201708536TA SG11201708536TA (en) | 2015-04-22 | 2016-04-04 | Mucosal immunostimulator |
JP2016567051A JP6202587B2 (ja) | 2015-04-22 | 2016-04-04 | 粘膜免疫賦活剤 |
US15/567,753 US20180104205A1 (en) | 2015-04-22 | 2016-04-04 | Mucosal immunostimulator |
EP16782980.3A EP3287129A4 (en) | 2015-04-22 | 2016-04-04 | MUCOUS IMMUNOSTIMULATOR |
US16/586,677 US20200093776A1 (en) | 2015-04-22 | 2019-09-27 | Mucosal immunostimulator |
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US16/586,677 Division US20200093776A1 (en) | 2015-04-22 | 2019-09-27 | Mucosal immunostimulator |
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JPH0952816A (ja) * | 1995-08-10 | 1997-02-25 | Pola Chem Ind Inc | 免疫増強マッサージ料 |
WO2000051634A1 (fr) * | 1999-03-03 | 2000-09-08 | The Kitasato Institute | Preparations de vaccins contenant des acides gras comme composants |
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JPH0952816A (ja) * | 1995-08-10 | 1997-02-25 | Pola Chem Ind Inc | 免疫増強マッサージ料 |
WO2000051634A1 (fr) * | 1999-03-03 | 2000-09-08 | The Kitasato Institute | Preparations de vaccins contenant des acides gras comme composants |
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WO2018074327A1 (ja) * | 2016-10-20 | 2018-04-26 | 株式会社山田養蜂場本社 | 粘膜免疫調節剤 |
US11089805B2 (en) | 2016-10-20 | 2021-08-17 | Yamada Bee Company, Inc. | Mucosal immunomodulator |
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JPWO2016170959A1 (ja) | 2017-05-18 |
TW201642845A (zh) | 2016-12-16 |
EP3287129A4 (en) | 2019-01-09 |
EP3287129A1 (en) | 2018-02-28 |
MY180228A (en) | 2020-11-25 |
US20180104205A1 (en) | 2018-04-19 |
CN107530305A (zh) | 2018-01-02 |
SG11201708536TA (en) | 2017-11-29 |
US20200093776A1 (en) | 2020-03-26 |
JP6202587B2 (ja) | 2017-09-27 |
CN107530305B (zh) | 2021-06-04 |
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