JP2014028852A - Igfbp-5 expression inhibitor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an expression inhibitor of insulin-like growth factor-binding protein-5 (IGFBP-5) which is expressed in prostate, mammary gland, skin, and hair follicle and is especially related to a hair shape, and an agent for controlling hair shape.SOLUTION: An expression inhibitor of IGFBP-5 and an agent for controlling hair shape contain Swertia japonica of Gentianaceae or its extract as an active ingredient. Since overexpression of IGFBP-5 causes non-straight hair, the expression inhibitor of IGFBP-5 has an effect as the agent for controlling hair shape improving the non-straight hair.

Description

  The present invention relates to an expression inhibitor of insulin-like growth factor-binding protein-5 (hereinafter referred to as “IGFBP-5”).

Insulin-like growth factor (hereinafter referred to as “IGF”) is a polypeptide that is highly similar in sequence to insulin. In cell culture, it exhibits actions similar to those of insulin, such as promoting cell growth and promoting DNA synthesis.
Insulin-like growth factor binding protein (IGFBP) is a protein that specifically binds to IGF, and inhibits the binding of IGF to the receptor or increases the half-life of IGF to increase the action of IGF. Adjust. IGFBP forms a family of six molecular species.

IGFBP-5 is an insulin-like growth factor binding protein that is mainly expressed in the prostate, mammary gland, skin and hair follicles (Non-patent Documents 1 and 2), and particularly in human hair follicles, the hair papilla and hair root sheath. It is expressed and is known to be important for the reconstitution of the extracellular matrix (Non-patent Document 2). In addition, it is known to have a proliferation promoting action on human prostate cancer cells (Non-patent Documents 3-5).
Moreover, when IGFBP-5 is overexpressed in mouse bone cells, the bone mineralization rate and cancellous bone decrease (Non-patent Document 6), and the long bone density of genetically modified mice overexpressing IGFBP-5 is 30% lower than the long bone density of control mice (Non-patent Document 7), and over-expression of IGFBP-5 in osteosarcoma-derived cells reduces its growth rate by 30% (Non-patent Document 8) It has been known that when IGFBP-5 is overexpressed in the osteoblast-like cell line MC3T3, cell differentiation and calcification are reduced (Non-patent Document 9).

Mouse body hair is classified into four types according to its shape, and it is known that the hair is zigzag hair, auchen hair, guard hair, and awl hair.
Recently, IGFBP-5 is expressed in the hair papilla and medulla (medulla) of mice, and its expression level changes in association with the hair cycle of mice (Non-patent Document 10), IGFBP-5. Is strongly expressed in the medulla of the bent part of the hair-like zigzag hair among the types of body hair of the mouse, and the hair of the mouse overexpressing IGFBP-5 has an increased bending compared to the control mouse, It is known that the shape of guard hair and awl hair, which are straight hair types, is also combed hair (Non-patent Documents 11 and 12).
Comb hair and curly hair are one of the causes of hair problems such as `` spreading hair '', `` cannot make a favorite hairstyle '', `` it takes time to care for hair '', and uses hair straighteners etc. Thus, it has been conventionally performed to cut the cystine bond of hair keratin and straighten the hair. However, there is a problem that such drugs damage hair.

  On the other hand, a plant selected from Chabotis diatom, Siberian leopard, Setcha, Bushowge, Gumbainazuna, Sembli, Doksanran, Saihairan, Bukkuri, Wild indigo and pine tree has various pharmacological actions such as diuretic action, anti-inflammatory action, blood circulation promoting action, etc. However, it has not been known so far that these plants have an IGFBP-5 expression inhibitory action.

Biochem. J. (2006) 395 1-19 J. Invest. Dermatol. (1996) 106 471-475 Prostate Cancer Prostatic Dis. (2000) 3 S16 Endocrinology (2000) 141 2257-2265 Canse Res. (2000) 60 3058-3064 Endocrinology (2002) 143 3955-3962 Endocrinology (2005) 146 931-940 Biochem Biophys Res Commun (2001) 288 435-442 Bone (2004) 35 1256-1262 J. Biol. Chem. (1994) 269 (14) 10891-10898 Development (2005) 132 2981-2990 Mechanisms of Development (2005) 122 988-997

  The present invention relates to providing an IGFBP-5 expression inhibitor useful for hair shape control and the like.

  As a result of examining the substance that suppresses the expression of IGFBP-5, the present inventors have found that a plant selected from Chaboteisou, Subuhiyu, Setcha, Bussouge, Gunbynaduna, Semburi, Doxsanran, Saihailan, Bukkyou, Wild Indigo, and Pinus Alternatively, the present inventors have found that the extract has an excellent IGFBP-5 expression inhibitory action and can be used as a pharmaceutical or a cosmetic for the purpose of suppressing hair shape, inhibiting cancer cell proliferation and preventing or improving bone diseases.

  That is, the present invention provides an IGFBP-5 expression inhibitor comprising as an active ingredient a plant or an extract thereof selected from Chaboteisou, Subahiyu, Setcha, Bushouge, Gunba Nazuna, Sembli, Doksanran, Sai Hairan, Bukkyo, Wild Indigo, and Pinus. It is concerned.

  The present invention also relates to a hair shape control agent comprising as an active ingredient a plant selected from Chabotis diatoms, purslanes, setchas, bushouges, gumbainasuna, senburi, dokusanran, saihailan, bukuryo, wild indigo, and pinewood. It is.

  The IGFBP-5 expression inhibitor of the present invention is useful as a pharmaceutical or cosmetic product for controlling hair shape such as improvement of comb hair, inhibiting the growth of cancer cells, or preventing or improving bone diseases such as osteoporosis. is there.

It is the figure which showed the PRLP0 RNA relative expression level and the IGFBP-5 / RPLP0 RNA relative expression level.

  In the present invention, “IGFBP-5 expression suppression” refers to suppressing the expression of IGFBP-5 by suppressing the expression of the IGFBP-5 gene or suppressing the expression of the IGFBP-5 gene.

  IGFBP-5 means insulin-like growth factor binding protein-5, which is a secreted protein consisting of 252 amino acid residues (J. Biol. Chem. (1994) 269 (14) 10891-10898). The IGFBP-5 gene refers to a gene encoding IGFBP-5, and the entire base sequence thereof is disclosed in J. Biol. Chem. (1994) 269 (14) 10891-10898.

In the present invention, Chabotis is a Passiflora in Passiflora incarnata, Subuhiyu means Portulaca oleracea L., Setcha means Thamnolia vermicularis (Ach.) Asahina, Bushsouge means Hibiscus rosa-sinensis L. of the mallow family, Gumbaidana means Thlaspi arvense of the cruciferous family, and assembly means Swertia japonica of the gentian family.
In addition, doxsan orchid means Pleione bulbocodiodes (French.) Rolfe of orchid family, and cyhai orchid means Cremastra appendiculata (D.Don) Makino of orchid department. Both bulbs are used as Sanjiko (Yamajika). Bukuryu means Poria cocos of the Sarno-Chickenaceae family, wild indigo means Baptisia tinctoria of the legume family, and oleander means Cyperus rotundus L. of the Cyperaceae family.

  The plant in the present invention is the whole plant, leaves, stems, buds, flowers, woody parts, bark, lichens, roots, rhizomes, temporary corms, corms, tubers, seeds, fruits, mycorrhiza, resin, etc. It can be used after crushing, but for Chabotodia, whole grass for submerged lily, lichen for setcha, flowers for bushouuge, whole grass for gumba, and whole grass for assembly. It is preferable to use a temporary corm for doxsan or rhinoceros, a mycorrhiza for bukuryo, a rhizome for wild indigo, and a corm for edible.

  The extract in the present invention refers to various solvent extracts obtained by extracting the above plants at room temperature or under heating or by using an extractor such as a Soxhlet extractor, a diluted solution thereof, and a concentrated solution thereof. It means the liquid or its dry powder.

As the extraction solvent used for obtaining the plant extract of the present invention, either a polar solvent or a nonpolar solvent can be used. Specific examples of the extraction solvent include water; alcohols such as methanol, ethanol, propanol and butanol; polyhydric alcohols such as propylene glycol and butylene glycol; ketones such as acetone and methyl ethyl ketone; methyl acetate and ethyl acetate. Esters such as tetrahydrofuran; linear and cyclic ethers such as tetrahydrofuran and diethyl ether; polyethers such as polyethylene glycol; hydrocarbons such as squalane, hexane, cyclohexane and petroleum ether; aromatic hydrocarbons such as toluene; dichloromethane , Halogenated hydrocarbons such as chloroform and dichloroethane; and carbon dioxide. These can be used as a mixture.
Of the above extraction solvents, the extraction solvent of the present invention is preferably a mixture of ethanol, propylene glycol, butylene glycol and water. Moreover, as usage-amount of an extraction solvent, 1-100 mL is preferable with respect to 1 g of plants, As extraction time, 1 hour-100 days are preferable, As extraction temperature, 5-80 degreeC is preferable.

  The above plant extract can be used as it is, but it can also be used after being diluted, concentrated or lyophilized, and then prepared into a powder or paste.

  The plant extract can also be used after removing inactive impurities from the extract by a separation technique such as chromatographic liquid-liquid distribution. In addition, you may use the plant of these invention or those extracts in mixture of 2 or more types.

The plant of the present invention or an extract thereof has an excellent IGFBP-5 expression inhibitory action as shown in Examples below. Therefore, the said plant or its extract can be used as an IGFBP-5 expression inhibitor, and can be used in order to manufacture the said IGFBP-5 expression inhibitor.
As described above, IGFBP-5 is a very important factor for hair shape (supra, Non-Patent Documents 6 and 7), and has an effect of promoting proliferation on cancer cells (supra, Non-Patent Document 3- 5) It has a bone mineralization and bone density reduction action (the above-mentioned, nonpatent literature 6-9).
Therefore, the plant of the present invention or an extract thereof is a pharmaceutical product or quasi-drug for humans or animals for controlling hair shape, inhibiting cancer cell proliferation, preventing or improving bone diseases such as osteoporosis. And can be used as cosmetics.

When using the plant of this invention or its extract as a pharmaceutical, it can be administered with arbitrary dosage forms. Examples of the dosage form include oral administration and parenteral administration such as transdermal, hair, enteral, transmucosal and injection.
The dosage form of the preparation for parenteral administration includes external preparations such as coating agents and patches, injections such as intravenous injections, intramuscular injections, subcutaneous injections, and intravenous infusions, inhalation, infusion, and sitting. Agents, inhalants, transdermal absorption agents, eye drops, nasal drops and the like.
Examples of the dosage form of the preparation for oral administration include tablets, coated tablets, capsules, granules, powders, powders, sustained-release preparations, suspensions, emulsions, oral liquids, dragees, pills, fine granules Agents, syrups, elixirs and the like.

  In such a preparation, the plant of the present invention or an extract thereof and a pharmaceutically acceptable carrier may be used in combination. Such carriers include, for example, excipients, binders, disintegrants, lubricants, diluents, osmotic pressure regulators, fluidity promoters, absorption aids, pH adjusters, emulsifiers, preservatives, stabilization. Agent, antioxidant, colorant, UV absorber, moisturizer, thickener, brightener, activity enhancer, anti-inflammatory agent, bactericidal agent, flavoring agent, flavoring agent, extender, surfactant, dispersant, Buffering agents, preservatives, fragrances, coating agents and the like can be mentioned.

  Among these dosage forms, an external preparation is preferable, and when used as an external preparation, the content of the plant of the present invention or the extract thereof in the preparation is usually 0.0001 to 10% by mass of the total preparation weight. 0.001 to 5 mass% is preferable, and 0.01 to 5 mass% is more preferable.

  The dosage of the formulation may vary according to the patient's condition, weight, sex, age or other factors, but the daily dosage per adult for oral administration is usually as a plant or extract thereof 0.01-1 g is preferable. Moreover, although the said formulation can be administered according to arbitrary administration schedules, it is preferable to administer once to several times a day.

In addition, when the plant of the present invention or an extract thereof is used as a quasi-drug or cosmetic, it can be used as a skin external preparation, a cleaning agent, or a makeup cosmetic. , Massage agents, lotions, emulsions, gels, creams, ointments, powders, packs, granules, foundations, lipsticks, bath preparations, shampoos, hair conditioners, hair tonics, tablets, capsules, absorbent articles, sheet products, etc. The dosage form can be provided. Such quasi-drugs and cosmetics of various dosage forms include oily ingredients, moisturizing agents, which are blended with the plant of the present invention or an extract thereof alone or in quasi-drugs, skin cosmetics and cleaning agents. Prepared by appropriately combining agents, powders, pigments, emulsifiers, solubilizers, detergents, UV absorbers, thickeners, medicinal ingredients, fragrances, resins, antibacterial and antifungal agents, plant extracts, alcohols, etc. can do.
The content of the plant of the present invention or the extract thereof in the quasi drug and cosmetic is preferably 0.001 to 5% by mass, and more preferably 0.01 to 5% by mass.
EXAMPLES Hereinafter, an Example is shown and this invention is demonstrated more concretely.

Production Example 1
Extracts of Chabotis diatom, Siberian leopard, Setcha, Bushweed, Gumba in Tuna, Sembli, Dokusanran, Bukkuri, Wild indigo and pinewood were prepared.
As for Chabodia, 40 g of whole plant was cut into small portions, 400 mL of 50% ethanol was added, extracted at room temperature for 22 days, and filtered to obtain an extract (yield 270 mL, evaporation residue 1.06 w / v%). For other plants, extracts were obtained under the conditions shown in Table 1 in the same manner as Chabotodia.

Example 1
1) Normal human epidermal keratinocytes The following two types of normal human epidermal keratinocytes were used.
i) Normal human neonatal foreskin-derived epidermal keratinocytes KK-4009 lot number 5C0759 Kurabo Industries
ii) Normal human adult male foreskin-derived epidermal keratinocytes KJB-100 Lot number FOR21M1105 Kojin Bio Inc.

2) Medium and other reagents A serum-free liquid medium (EpiLife-KG2 M-EPI-2150S Kurabo Industries) for normal human epidermal keratinocyte proliferation was used. Additives: final concentration 10 μg / mL insulin (INS), 0.1 ng / mL human recombinant epidermal growth factor (hEGF), 0.5 μg / mL hydrocortisone (HC), antibacterial agent (50 μg / mL gentamicin, 50 ng / mL Amphotericin B) and 0.4% V / V bovine pituitary extract (BPE) were added. The growth medium was a medium (EpiLife-KG2 (+)) to which all the above-mentioned additives were added. The medium at the time of plant extract addition was a medium (EpiLife-KG2 (-)) to which INS, HC, and an antibacterial agent were added. For the passage, a trypsin / EDTA solution (HK-3120) containing 0.025% W / V trypsin and 0.01% W / V EDTA and a trypsin neutralizing solution (HK-3220) containing 10% FBS were used.

3) Screening For screening, normal human epidermal keratinocytes were seeded at 1.0 to 1.5 × 10 ⁴ cm ² in 6-well plates or 12-well plates, and 37 ° C, 5% using EpiLife-KG2 (+). Cultivation was performed under CO ₂ concentration. The cells were cultured for 1 to 3 days and confirmed to be 50% to 60% confluent. The cells were washed twice with PBS and then replaced with EpiLife-KG2 (-). After 24 hours, the plant extract (plant extract) was replaced with a medium in which EpiLife-KG2 (-) containing a final concentration of 0.5% V / V or 0.1% V / V was prepared, and cultured for 24 hours.
669 plant extracts were added to the cells at final concentrations of 1.0% V / V and 0.5% V / V. In addition, the extraction solvent of each plant extract was used as control. The addition of plant extract to the cells is N = 1.

  The cells were washed twice with PBS, isogen (311-02501 Nippon Gene) was added, and the cells were collected. RNA was extracted from the cells and purified according to standard methods provided by Nippon Gene.

For the measurement of the concentration of each purified RNA, an absorption spectrometer and Quant-iT ^™ RiboGreen RNA Reagent and kit (R11490 Invitrogen) were used. RNA was measured according to standard methods presented by Invitrogen. After measuring the concentration, QuantiTect Reverse Transcript (205311 Qiagen) was used. RNA was converted to cDNA according to standard methods presented by Qiagen.

Using an Applied Biosystems 7500 Fast real-time PCR system, the expression level of RNA of the IGFBP-5 gene and the Ribosomal Protein large PO gene as an internal standard gene was quantified. Universal Master Mix (4304437 Applied Biosystems), TaqMan (registered trademark) Gene Expression Assays (IGFBP-5: Hs00181213_mL, RPLP0: Hs99999902_mL Applied Biosystems) were used according to the standard method presented by Applied Biosystems. Each gene was subjected to absolute quantification by the calibration curve method. The results are shown in FIG. The PRLP0 RNA relative expression level is shown by a square, and the IGFBP-5 / RPLP0 RNA relative expression level is shown by a bar graph.
In the evaluation, the RNA expression level of the IGFBP-5 gene was corrected with the RNA expression level of the RPLP0 gene, which is an internal standard gene. The RNA expression level extracted from the cells to which the control was added was 1.

  As can be seen from FIG. 1, excellent IGFBP-5 gene expression-inhibiting action was confirmed in all of Chaboteisou, Subuhiyu, Setcha, Bushouge, Gumbainazuna, Sembli, Dokusanran, Bukkyou, Wild Indigo, and Omanage.

Claims (2)

  An inhibitor of IGFBP-5 expression comprising an assembly or an extract thereof as an active ingredient.   A hair shape control agent comprising the assembly or an extract thereof as an active ingredient.