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JP2018035084A - Skin antimicrobial composition - Google Patents

Skin antimicrobial composition Download PDF

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JP2018035084A
JP2018035084A JP2016168572A JP2016168572A JP2018035084A JP 2018035084 A JP2018035084 A JP 2018035084A JP 2016168572 A JP2016168572 A JP 2016168572A JP 2016168572 A JP2016168572 A JP 2016168572A JP 2018035084 A JP2018035084 A JP 2018035084A
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skin
molecular weight
lps
measured
antimicrobial composition
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JP6995468B2 (en
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裕之 稲川
Hiroyuki Inagawa
裕之 稲川
千恵 河内
Chie Kawachi
千恵 河内
源一郎 杣
Genichiro Soma
源一郎 杣
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BIO MEDICAL RES GROUP KK
Bio Medical Research Group KK
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Abstract

PROBLEM TO BE SOLVED: To develop a substance capable of inducing dermcidin from the keratinocyte of skin epithelial cells covering the entire skin, because dermcidin is known to be generated in the sweat gland and comprised in sweat as well as to be thought to have an important role in skin antimicrobial activity.SOLUTION: A skin antimicrobial composition is obtained from Pantoea bacteria, gram-negative microbial cells, and is characterized by containing as an active ingredient a small molecule lipopolysaccharide having a molecular weight of 5000±2000 measured by SDS-PAGE method with a protein marker.SELECTED DRAWING: Figure 1

Description

この発明は、特定の理化学的性質を有し、安全性が極めて高く、かつ生物活性の高い低分子量リポポリサッカライド(LMM-LPS)を配合してなる皮膚用抗菌組成物に関するものである。   The present invention relates to an antibacterial composition for skin comprising specific low physicochemical properties, extremely high safety and high biological activity and low molecular weight lipopolysaccharide (LMM-LPS).

ダームシジンは汗腺で産生し汗に含まれることが知られており、皮膚の抗菌作用に重要な働きを持つとされる。そこで、我々は、皮膚全体を覆うのは皮膚上皮細胞のケラチノサイトであることから、この細胞からダームシジンが誘導出来る物質を開発することができれば、汎用性が高く、常に皮膚の健康状態を維持出来ると考えた。   Darmcidin is known to be produced in sweat glands and contained in sweat, and has an important role in the antibacterial action of the skin. Therefore, since we cover the entire skin with keratinocytes of skin epithelial cells, if we can develop a substance that can induce dermiscidin from these cells, it is highly versatile and always maintains the health of the skin. Thought.

特許第4043533号公報Japanese Patent No. 4043533

Rieg S、外4名、”Dermcidin is constitutively produced by eccrine sweat glands and isnot induced in epidermal cells under inflammatory skin conditions.”、British Journal of Dermatology、2004年9月、151(3)、p.534−539Rieg S, 4 others, “Dermcidin is constitutively produced by eccrine sweat glands and is not induced in epidermal cells under inflammatory skin conditions.”, British Journal of Dermatology, September 2004, 151 (3), p. 534-539 Kakurai M、外7名、”Vasoactive Intestinal Peptide and Cytokines Enhance Stem Cell FactorProduction From Epidermal Keratinocytes DJM-1.”、JInvest Dermatol、2002年11月、119(5)、p.1183−1188Kakurai M, 7 others, “Vasoactive Intestinal Peptide and Cytokines Enhance Stem Cell Factor Production From Epidermal Keratinocytes DJM-1.”, JInvest Dermatol, November 2002, 119 (5), p. 1183-1188

しかしながら、ケラチノサイトからダームシジンは産生しないことが報告されている。さらに、文献ではLPSでも誘導しないことが記載されている(非特許文献1)。   However, it has been reported that no dermiscidin is produced from keratinocytes. Furthermore, the literature describes that LPS does not induce (Non-patent Document 1).

ケラチノサイトからダームシジンを産生する課題について、我々は鋭意研究したところ、パントエア菌LPSから得られる分子量5000±2000の低分子量LPS (LMM-LPS)は、これまでの常識を覆してケラチノサイトからダームシジンを産生することを見出し、本発明を確立することが出来た。   As a result of intensive research on the problem of producing dermatidin from keratinocytes, the low molecular weight LPS (LMM-LPS) with a molecular weight of 5000 ± 2000 obtained from Pantoea LPS produces dermsidin from keratinocytes. As a result, the present invention has been established.

皮膚全体を覆う皮膚上皮細胞のケラチノサイトからダームシジンが誘導出来る物質を開発したので、汎用性が高く、常に皮膚の健康状態を維持出来る。   Since a substance that can induce dermiscidin from keratinocytes of skin epithelial cells that cover the entire skin has been developed, it is highly versatile and can always maintain the health of the skin.

本発明の結果を示す図である。It is a figure which shows the result of this invention.

低分子量リポポリサッカライドがケラチノサイトからダームシジンを産生することを明らかにするために、ケラチノサイトから誘導されるメッセンジャーRNA (mRNA)を比較定量するリアルタイムPCR法を用いた。   In order to clarify that low molecular weight lipopolysaccharide produces dermisidin from keratinocytes, a real-time PCR method was used to compare and quantify messenger RNA (mRNA) derived from keratinocytes.

本発明に使用した低分子量リポポリサッカライドは、パントエア・アグロメランスを常法により培養し、培地から菌体を集め、集めた菌体から公知の方法、例えば、熱フェノール法[オー・ウエストファール(O.Westphal)編、メソッズ・イン・カーボハイドレート・ケミストリー(Methods in Carbohydrate Chemistry)、第5巻、第83ページ、アカデミック・プレス(Academic Press)1965年]、により抽出し、さらに、陰イオン交換樹脂により精製して製造した。すなわち、パントエア菌の菌体を蒸留水に懸濁し、この懸濁液を蒸留水および等容量の熱フェノールの混合液に添加して撹拌し、次いで遠心分離して水層を回収し、この水層を透析してフェノールを除去し、限界濾過法により濃縮して粗LPS画分を採取し、この画分を常法の陰イオン交換クロマトグラフィー(例えば、モノQ−セファロースまたはQ−セファロースを使用する)により精製し常法により脱塩して、精製LPSを得た。   The low-molecular-weight lipopolysaccharide used in the present invention is obtained by culturing pantoea agglomerans according to a conventional method, collecting bacterial cells from the medium, and collecting the collected bacterial cells by a known method such as the hot phenol method [O Westfale (O Westphal), Methods in Carbohydrate Chemistry, Volume 5, page 83, Academic Press 1965], and anion exchange resin And purified. That is, the cells of Pantoea are suspended in distilled water, the suspension is added to a mixture of distilled water and an equal volume of hot phenol and stirred, and then centrifuged to recover the aqueous layer. The layer is dialyzed to remove phenol and concentrated by ultrafiltration to obtain a crude LPS fraction, which is collected using conventional anion exchange chromatography (eg, using mono-Q-sepharose or Q-sepharose). And desalted by a conventional method to obtain purified LPS.

得られた精製LPSは既報(特許文献1)に従い、デオキシコール酸ナトリウム等の界面活性剤の存在下でゲル濾過し、低分子量LSPを含有する画分のみを回収し、混在する高分子量LSPを除去することによって、高度に精製された低分子量リポポリサッカライドを得た(LMM-LPS)。   Purified LPS obtained was gel filtered in the presence of a surfactant such as sodium deoxycholate according to a report (Patent Document 1), and only the fraction containing low molecular weight LSP was recovered. Removal gave a highly purified low molecular weight lipopolysaccharide (LMM-LPS).

以上の方法により製造されたこの発明の新規な低分子量LPSは、
a)タンパク質マーカーを用いてSDS−PAGE法で測定した分子量が5,000±2,000であり
b)エルソン−モルガン法により測定したヘキソサミン含量が1〜3個/分子量5,000であること
c)ジフェニルアミン法により測定した2−ケト−3−デオキシオクトネート含量が1〜3個/分子量5,000であること
d)リムラス活性が、少なくとも10EU/ngであること
e)タンパク質含量が、1%以下であること
f)核酸含量が、1%以下であること
という理化学的および生物学的性質を有し、かつ少なくとも98%の純度を有している。
The novel low molecular weight LPS of the present invention produced by the above method is
a) The molecular weight measured by SDS-PAGE using protein markers is 5,000 ± 2,000 b) The hexosamine content measured by Elson-Morgan method is 1 to 3 / molecular weight 5,000 c ) The content of 2-keto-3-deoxyoctonate measured by the diphenylamine method is 1 to 3 / molecular weight 5,000 d) The limulus activity is at least 10 EU / ng e) The protein content is 1% F) It has physicochemical and biological properties that the nucleic acid content is 1% or less and has a purity of at least 98%.

ケラチノサイトとしては、正常ヒト単離のケラチノサイトと同等の性質を示すDMJ-1細胞(非特許文献2)を理研バイオリソースセンターから購入した。DJM-1細胞は、培養液(10% FBS、100U/mLペニシリン、100μg/mLストレプトマイシンを含有するMEM培地)にて継代培養したものを用いた。   As keratinocytes, DMJ-1 cells (Non-patent Document 2) exhibiting the same properties as keratinocytes isolated from normal humans were purchased from the RIKEN BioResource Center. The DJM-1 cells used were subcultured in a culture solution (MEM medium containing 10% FBS, 100 U / mL penicillin, 100 μg / mL streptomycin).

Escherichia coli LPSは、SIMA ALDRICHから購入したEscherichia coli 0111:B4株由来のもの(製品番号L2630-10MG)を用いた。   As Escherichia coli LPS, one derived from Escherichia coli 0111: B4 purchased from SIMA ALDRICH (product number L2630-10MG) was used.

DJM-1細胞1×106 cellを直径6cmのプラスチックディッシュに播種し、37℃の5%炭酸ガスインキュベーターで24時間培養した。24時間後に培養液を除き、LPSを含む培養液に交換し、6時間培養を行った、培養後、リン酸緩衝液でディッシュを洗浄後、RNA抽出バッファーを加え、細胞を懸濁した。細胞懸濁液を1.5mLチューブに移し、RNeasy mini kit(キアゲン)を用いて全RNAを調整した。 DJM-1 cells 1 × 10 6 cells were seeded on a plastic dish having a diameter of 6 cm and cultured in a 5% carbon dioxide incubator at 37 ° C. for 24 hours. After 24 hours, the culture solution was removed and replaced with a culture solution containing LPS and cultured for 6 hours. After culturing, the dish was washed with a phosphate buffer, and then an RNA extraction buffer was added to suspend the cells. The cell suspension was transferred to a 1.5 mL tube, and total RNA was prepared using RNeasy mini kit (Qiagen).

抽出した全RNAに含まれるmRNAを増幅するための準備段階として、相補的DNA(cDNA)を合成した。cDNA合成にはReverTra Ace(R) qPCR RT Master Mix with gDNA Remover(TOYOBO)を用いた。合成した相補的DNAを鋳型にして、定量ポリメラーゼチェインリアクション(PCR)を実施した。定量PCRはサイバーグリーン(iQ(TM) SYBR(R) Green スーパーミックス(バイオラッド))を用いて行った。ダームシジン(DCD、アクセッション番号NM_053283)遺伝子の発現量はβ-actinを標準としてΔΔCT法を用いて算出した。   As a preparatory step for amplifying mRNA contained in the extracted total RNA, complementary DNA (cDNA) was synthesized. ReverTra Ace® qPCR RT Master Mix with gDNA Remover (TOYOBO) was used for cDNA synthesis. Quantitative polymerase chain reaction (PCR) was performed using the synthesized complementary DNA as a template. Quantitative PCR was performed using Cyber Green (iQ (TM) SYBR (R) Green Supermix (Bio-Rad)). The expression level of the damcidin (DCD, accession number NM_053283) gene was calculated using the ΔΔCT method with β-actin as a standard.

結果
ヒトケラチノサイト細胞のDJM-1細胞を大腸菌LPS(LPSe)、パントエア菌由来の低分子量LPS(LMM-LPS))で刺激した6時間後の結果を図1に示した。大腸菌LPSは一般的に使用されている高分子量を多く含むLPSとして用いた。図1に示されるように、10ng/mlの大腸菌LPSではダームシジンの誘導はほとんど起こらなかったが、LMM-LPSはダームシジンを誘導していた。
Results The results after 6 hours of stimulating human keratinocyte cells DJM-1 cells with Escherichia coli LPS (LPSe), Pantoea-derived low molecular weight LPS (LMM-LPS)) are shown in FIG. E. coli LPS was used as a LPS containing a large amount of high molecular weight that is generally used. As shown in FIG. 1, 10 ng / ml E. coli LPS hardly induced dermiscidin, but LMM-LPS induced dermiscidin.

以上のことから、低分子量LPSはヒトケラチノサイトからダームシジンを誘導することを明らかにした。
From the above, it was clarified that low molecular weight LPS induces darmsidin from human keratinocytes.

Claims (2)

微生物菌体から得られ、次のa)〜c)の理化学的性質
a)タンパク質マーカーを用いてSDS−PAGE法で測定した分子量が5,000±2,000であり
b)エルソン−モルガン法により測定したヘキソサミン含量が1〜3個/分子量5,000であること
c)ジフェニルアミン法により測定した2−ケト−3−デオキシオクトネート含量が1〜3個/分子量5,000であること
を有する低分子量リポポリサッカライドを有効成分として含有することを特徴とする皮膚用抗菌組成物。
The following physicochemical properties a) to c) obtained from microbial cells: a) molecular weight measured by SDS-PAGE using protein markers is 5,000 ± 2,000 b) by Elson-Morgan method The measured hexosamine content is 1 to 3 / molecular weight 5,000 c) the low 2-keto-3-deoxyoctonate content measured by the diphenylamine method is 1 to 3 / molecular weight 5,000 An antibacterial composition for skin, comprising a molecular weight lipopolysaccharide as an active ingredient.
前記微生物菌体がパントエア属に属する微生物菌体であること特徴とする請求項1記載の皮膚用抗菌組成物。
The antimicrobial composition for skin according to claim 1, wherein the microbial cell is a microbial cell belonging to the genus Pantoea.
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Cited By (1)

* Cited by examiner, † Cited by third party
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JPWO2021060127A1 (en) * 2019-09-24 2021-04-01

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JP2016147816A (en) * 2015-02-10 2016-08-18 日東電工株式会社 Vaccine composition for mucosal administration

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JPH07126172A (en) * 1993-11-05 1995-05-16 Genichiro Soma Lps-containing anti-mrsa agent and anti-mrsa agent for animal
JPH08198902A (en) * 1995-01-27 1996-08-06 Denichi Mizuno Low-molecular weight lipopolysaccharide
JP2016074654A (en) * 2014-10-02 2016-05-12 日東電工株式会社 Vaccine pharmaceutical composition for transdermal administration
JP2016147816A (en) * 2015-02-10 2016-08-18 日東電工株式会社 Vaccine composition for mucosal administration

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPWO2021060127A1 (en) * 2019-09-24 2021-04-01
WO2021060127A1 (en) * 2019-09-24 2021-04-01 有限会社バイオメディカルリサーチグループ Lipopolysaccharide production method
CN114450312A (en) * 2019-09-24 2022-05-06 生物医学研究集团有限公司 Method for producing lipopolysaccharide
US20220372536A1 (en) * 2019-09-24 2022-11-24 Biomedical Research Group Inc. Lipopolysaccharide production method
CN114450312B (en) * 2019-09-24 2024-02-23 生物医学研究集团有限公司 Method for producing lipopolysaccharide

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