JP4369985B2 - アンジオテンシン変換酵素阻害ペプチド - Google Patents
アンジオテンシン変換酵素阻害ペプチド Download PDFInfo
- Publication number
- JP4369985B2 JP4369985B2 JP2008306249A JP2008306249A JP4369985B2 JP 4369985 B2 JP4369985 B2 JP 4369985B2 JP 2008306249 A JP2008306249 A JP 2008306249A JP 2008306249 A JP2008306249 A JP 2008306249A JP 4369985 B2 JP4369985 B2 JP 4369985B2
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- Prior art keywords
- tripeptide
- peptide
- tyr
- val
- converting enzyme
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K5/00—Peptides containing up to four amino acids in a fully defined sequence; Derivatives thereof
- C07K5/04—Peptides containing up to four amino acids in a fully defined sequence; Derivatives thereof containing only normal peptide links
- C07K5/08—Tripeptides
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K5/00—Peptides containing up to four amino acids in a fully defined sequence; Derivatives thereof
- C07K5/04—Peptides containing up to four amino acids in a fully defined sequence; Derivatives thereof containing only normal peptide links
- C07K5/08—Tripeptides
- C07K5/0802—Tripeptides with the first amino acid being neutral
- C07K5/0804—Tripeptides with the first amino acid being neutral and aliphatic
- C07K5/0808—Tripeptides with the first amino acid being neutral and aliphatic the side chain containing 2 to 4 carbon atoms, e.g. Val, Ile, Leu
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K38/00—Medicinal preparations containing peptides
- A61K38/04—Peptides having up to 20 amino acids in a fully defined sequence; Derivatives thereof
- A61K38/06—Tripeptides
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K38/00—Medicinal preparations containing peptides
- A61K38/16—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- A61K38/55—Protease inhibitors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P43/00—Drugs for specific purposes, not provided for in groups A61P1/00-A61P41/00
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P9/00—Drugs for disorders of the cardiovascular system
- A61P9/12—Antihypertensives
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K38/00—Medicinal preparations containing peptides
Landscapes
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Veterinary Medicine (AREA)
- Public Health (AREA)
- Pharmacology & Pharmacy (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Animal Behavior & Ethology (AREA)
- Engineering & Computer Science (AREA)
- Biophysics (AREA)
- Molecular Biology (AREA)
- Genetics & Genomics (AREA)
- Biochemistry (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Gastroenterology & Hepatology (AREA)
- Immunology (AREA)
- Epidemiology (AREA)
- Heart & Thoracic Surgery (AREA)
- Cardiology (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
- Peptides Or Proteins (AREA)
- Coloring Foods And Improving Nutritive Qualities (AREA)
Description
さらに、本発明は上記トリペプチドを一種以上含有してなる飲食用組成物、アンジオテンシン変換酵素阻害剤および血圧降下剤を提供する。
チドの少なくとも一種を豊富に含む経口摂取可能な組成物として製造することが好ましい。
ACE阻害活性測定法:
本発明におけるACE阻害活性(IC50)は、以下の方法に従って測定した。
緩衝液:0.1M HEPES、0.3M NaCl、0.01%Triton−X(pH 8.3)
酵素:ウサギ肺由来ACE(Sigma)
上記緩衝液に溶解し、濃度を1mU/50μlに調整。
基質:Bz−Gly−His−Leu・H2O(ペプチド研究所)
8.95mgを1mlのジメチルスルホキシドに溶解し、さらに水で5倍に希釈する(最終濃度4mM)。
阻害率=[1−(A−a)/(B−b) ] × 100
A:試料添加
a:試料添加、酵素のかわりに緩衝液添加
B:試料のかわりに蒸留水添加
b:試料のかわりに蒸留水添加、酵素のかわりに緩衝液添加
脱脂ゴマ100gに水2Lを加え、水酸化ナトリウムを添加してpHを12.0〜12.5に調整し、55℃で1時間攪拌後、濾過して蛋白抽出液を得た。この蛋白抽出液に塩酸を添加してpHを4.0に調整し、遠心分離してゴマ蛋白質(乾燥重量19.8g)を得た。
カラム:Bio-Gel P-2(15mm ID × 820mm L、Bio-Rad)
溶出液:10%エタノール
流 速:0.15ml/min
検 出:UV 210nm
カラム:Develosil ODS-10(20mm ID × 250mm L、野村化学)
移動層:Buffer A:5%CH3CN、0.1%TFA
Buffer B:40%CH3CN、0.1%TFA
勾 配:0〜20min:0%Buffer B 20〜80min:0〜100 %Buffer B
流 速:10ml/min
検 出:UV 210nm
フラクション39の凍結乾燥ペプチドを200μlの精製水に溶解し、C30カラムを用いた高速液体クロマトグラフィーに付し、ペプチドを分画した。以下に条件を記す。
カラム:Develosil C30-UG-5(10mm ID × 250mm L、野村化学)
移動層:Buffer :10%CH3CN、0.1%TFA
流 速:4ml/min
検 出:UV 210nm
フラクション52の凍結乾燥ペプチドを200μlの精製水に溶解し、C30カラムを用いた高速液体クロマトグラフィーに付し、ペプチドを分画した。以下に条件を記す。
カラム:Develosil C30-UG-5(10mm ID × 250mm L)
移動層:Buffer :14%CH3CN、0.1%TFA
流 速:4ml/min
検 出:UV 210nm
フラクション54の凍結乾燥ペプチドを200μlの精製水に溶解し、C30カラムを用いた高速液体クロマトグラフィーに付し、ペプチドを分画した。以下に条件を記す。
カラム:Develosil C30-UG-5(10mm ID × 250mm L、野村化学)
移動層:Buffer :17%CH3CN、0.1%TFA
流 速:4ml/min
検 出:UV 210nm
アプライドバイオシステムズ社のペプチド自動合成機(ABI 430モデル)を使用し、プログラムに従ってC端より逐次BOC法によりペプチド鎖を延長し目的の保護ペプチド樹脂の合成をおこなった。
凍結乾燥により粉末固体として得た。さらに得られた粗ペプチドをODSカラムを用いた高速液体クロマトグラフィーに付し精製を行い、目的のペプチドを得た。
カラム:YMC-Pack ODS-A(30mm ID × 250mm L、ワイエムシィ)
移動層:Buffer A:5%CH3CN、0.1%TFA
Buffer B:40%CH3CN、0.1%TFA
勾 配:0〜10min:0%Buffer B 10〜90min:0〜100 %Buffer B
流 速:20ml/min
検 出:UV 220nm
カラム:Zorbax 300SB-C18(4.6mm ID × 150mm L、Agilent Technologies)
移動層:Buffer A:1%CH3CN、0.1%TFA
Buffer B:60%CH3CN、0.1%TFA
勾 配: 0〜25min:0〜100 %Buffer B
流 速:1ml/min
検 出:UV 220nm
出発アミノ酸樹脂担体はBoc-Ala(BrZ)樹脂(0.5mmol)を使用し、アミノ酸誘導体Boc-Ser、Boc-Leuを各2mMを用いてペプチド鎖を伸長した。上記の方法で精製を行い、Leu−Ser−Alaを精製物を得た。上記の方法で精製物の純度を測定した結果、99.0%であった。
出発アミノ酸樹脂担体はBoc-Tyr(BrZ)樹脂(0.5mmol)を使用し、アミノ酸誘導体Boc-Ile、 Boc-Valを各2mMを用いてペプチド鎖を伸長した。上記の方法で精製を行い、Val−Ile−Tyrを精製物を得た。上記の方法で精製物の純度を測定した結果、98.8%であった。
出発アミノ酸樹脂担体はBoc-Tyr(BrZ)樹脂(0.5mmol)を使用し、アミノ酸誘導体Boc-Val、Boc-Leuを各2mMを用いてペプチド鎖を伸長した。上記の方法で精製を行い、Leu−Val−Tyrを精製物を得た。上記の方法で精製物の純度を測定した結果、99.2%であった。
実施例2.で得られた3種のペプチドについて、上記の方法に従って、ACE阻害活性を測定し、IC50を求めた。その結果を表1に示す。なお、対象として実施例1で得られたゴマのペプチド粉末のACE阻害活性を測定し、IC50を求めた。
17〜22週齢のSHR系ラットを1晩絶食させ、実施例2.で得られた3種のペプチドを1mg/kgの用量で経口投与した。なお、対照群として同量の水を経口投与したものと比較した。投与前から投与24時間後まで、血圧の推移を非観血式血圧測定装置(BP-98A、SOFTRON 社)によって測定した。その経時変化を図1に示した。
実施例2の合成品を用いて、下記の組成の穀物茶飲料を製造した。
配合量
焙煎大麦 60g
熱水 2000ml
製造例2のペプチド
Leu−Ser−Ala 19mg
Val−Ile−Tyr 18mg
Leu−Val−Tyr 18mg
焙煎大麦に熱水を加え、90℃、5分間加熱する。40℃に冷却後、濾過を行い、抽出液に水を加え、2000mlに調整した後、上記ペプチドを加えて攪拌、溶解させ、穀物茶飲料を製造した。
米およびオート麦をそれぞれ25gずつ破砕して粉体を作製した。それぞれの粉体に50mlのヘキサンを加え、濾紙(Whattman、No.1)で濾過して溶剤を除去した。同様の操作を計4回繰り返したのち、ヘキサンを除去して、米の脱脂粉体を18.8g、オート麦の脱脂粉体を15.9g得た。
米およびオート麦から得られたペプチドを20mg秤量し、0.1N酢酸に溶解して5mg/mlとし、ミクロフィルター(Millex−HV、孔径0.45 μm、フィルター径13 mm、Millipore社)で濾過して不溶物を除去した。濾液の2.5mlを0.1N酢酸で平衡化したPD−10カラム(脱塩用カラム、Amersham Biosciences社)に供した。更に3.5 ml容の0.1N酢酸で洗浄した。次いで、追加の3.0ml容の0.1N酢酸で溶出した画分を採取し、濃縮乾固後、0.5mlの水で溶解し、凍結乾燥した。
PD−10カラムによる前処理をした試料を250μlの45% CH3CN、0.1% TFAに溶解し、2000rpm、5分間、遠心分離した。ミクロフィルター(Millex−HV、孔径0.45 μm、フィルター径13mm、Millipore社)で濾過して不溶物を除去した。
ゲル濾過で得られた活性ペプチド画分をDevelosil C30−UG−5(3×150mm、野村化学(株))を用いた逆相HPLCにより Leu−Val−Tyrの定量を行なった。TSK−GEL G2000SWXCを用いたゲル濾過HPLCで得られた画分は250μlの5% CH3CN、0.1% TFAに溶解し、2000 rpm、5分間の遠心分離し、そして上清をミクロフィルター(Millex−HV、孔径0.45μm、フィルター径13mm、Millipore社)で濾過して不溶物を除去した。
0〜5min:5% CH3CN、0.1% TFA
5〜10min:5〜14% CH3CN、0.1% TFA
10〜35min:14% CH3CN、0.1% TFA
流速:0.4ml
検出波長:280nm
Y:ピーク面積、X:Leu−Val−Tyr量(μg)
Claims (18)
- Val−Ile−Tyrのアミノ酸配列を有するトリペプチド。
- アンジオテンシン変換酵素阻害活性を有する、請求項1に記載のトリペプチド。
- 血圧降下作用を有する、請求項1に記載のトリペプチド。
- 血圧上昇抑制作用を有する、請求項1に記載のトリペプチド。
- 請求項1〜4のいずれか1項記載のトリペプチドを含有してなる飲食用組成物。
- 一回の摂取量中に0.001mg〜100mgの前記トリペプチドを含む、請求項5に記載の飲食用組成物。
- 健康食品または健康飲料である、請求項5または6に記載の飲食用組成物。
- 高血圧予防用である、請求項5〜7のいずれか1項に記載の飲食用組成物。
- Val−Ile−Tyrのアミノ酸配列を有するトリペプチドを有効成分として含有してなる、アンジオテンシン変換酵素阻害剤。
- Val−Ile−Tyrのアミノ酸配列を有するトリペプチドを有効成分として含有してなる、血圧降下剤。
- Val−Ile−Tyrのアミノ酸配列を有するトリペプチドを有効成分として含有してなる、高血圧予防剤。
- 一回の投与量中に0.001mg〜100mgの前記トリペプチドを含む、請求項9〜11に記載のアンジオテンシン変換酵素阻害剤、血圧降下剤または高血圧予防剤。
- Val−Ile−Tyrのアミノ酸配列を有するトリペプチドを含有してなる医薬組成物。
- 経口用である請求項13に記載の医薬組成物。
- アンジオテンシン変換酵素阻害作用を有する請求項13または14に記載の医薬組成物。
- 血圧降下作用を有する、請求項13または14に記載の医薬組成物。
- 血圧上昇抑制作用を有する、請求項13または14に記載の医薬組成物。
- 一回の投与量中に0.001mg〜100mgの前記トリペプチドを含む、請求項13〜17のいずれか1項に記載の医薬組成物。
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JP2006219420A (ja) * | 2005-02-10 | 2006-08-24 | Nagase Chemtex Corp | 抗高血圧剤 |
WO2006114195A1 (en) * | 2005-04-28 | 2006-11-02 | Unilever N.V. | Compositions comprising tripeptides inhibiting ace |
WO2006114194A1 (en) * | 2005-04-28 | 2006-11-02 | Unilever N.V. | Peptides having a health benefit and compositions comprising them |
ZA200709009B (en) * | 2005-04-28 | 2009-01-28 | Unilever Plc | Peptides having an ace inhibiting effect |
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