JP6027013B2 - グルカン組成物 - Google Patents
グルカン組成物 Download PDFInfo
- Publication number
- JP6027013B2 JP6027013B2 JP2013540443A JP2013540443A JP6027013B2 JP 6027013 B2 JP6027013 B2 JP 6027013B2 JP 2013540443 A JP2013540443 A JP 2013540443A JP 2013540443 A JP2013540443 A JP 2013540443A JP 6027013 B2 JP6027013 B2 JP 6027013B2
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- JP
- Japan
- Prior art keywords
- glucan
- composition
- wound
- gel
- carboxymethylcellulose
- Prior art date
- 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.)
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Description
a)場合によってゲル化剤と一緒に、グルカン分子の水溶液を処理し、グルカンの水素結合を解離するステップ;
b)ステップa)の生成物にゲル化剤を場合によって添加するステップ;次いで
c)水溶液を処理しグルカン内の水素結合を再形成するステップ。
詳細には、ステップa)の後、水素結合の量は著しく減少し、ステップc)において増加するので、水素結合がグルカン鎖/分子間で形成され、これらの結合は「再形成される」。これらは、出発物質内の水素結合パターンが再生されるという意味では「再形成されず」、代りに異なるパターンが本方法によって生成する。
ゲルグルカン生成物(SG)の調製
1.5〜2%の酵母グルカン分子の水溶液を下記のように処理した。この水溶液を加ギ酸分解によって微粒子グルカン調製から調製し、選択的にβ−1,6側鎖を除去し、続く精製および透析濾過によって加ギ酸分解溶液からの粒子状物質および低分子量成分を除去した。適切な加ギ酸分解ステップは、欧州特許第0759089B1号の実施例3に開示されている。微粒子グルカンは、アルカリ、エタノールおよび水での別々の抽出によってパン酵母(S.cerevisiae)の細胞壁からそれ自体調製し、各抽出に続いて好適な乾燥(噴霧乾燥および真空乾燥)を行った。
グルカン溶液の濃度を調節した後、貯槽を取り囲むジャケットに水蒸気を導入することによって加熱される、閉じて揺動した800リットルの貯槽中で熱処理を行い、約60℃の温度で約220リットルの生成物量を通常与える。
次いで、積極的な冷却を始める。それは、手で操作する弁の直接の開閉によって手で操作する。先ず、水蒸気をジャケットから注意深く排出して流出させ、ドレーンバルブを開いたままにする。次いで、冷却水をジャケットに注意深く、初めは徐々に導入し、貯槽の鋼鉄に対して過剰の熱応力を回避する。温度が下がると、水の流量を増加させる。生成物温度が35〜40℃に到達するまで、冷却は通常継続する。123℃から40℃までの通常の冷却時間は、50〜60分である。
ゲルグルカン生成物の調製
1.5〜2%の酵母グルカン分子の水溶液を下記のように処理した。実施例1に記載されているように、この水溶液を加ギ酸分解によって微粒子グルカン調製品から調製し、選択的にβ−1,6側鎖を除去した。
グルカン溶液の濃度を調節した後、水酸化ナトリウムの添加を行い、貯槽を取り囲むジャケットに水蒸気または水の導入によって加熱または冷却して、閉じて揺動した800リットルの貯槽中で約185リットルの生成物量が得られた。
最後のNaOHを貯槽へ注いだ直後に、修復工程を始めた。
ステップaおよびbの間に添加したイオン(Na+およびCl-)を除去するために、生成物は、精製水の4倍量に対して十字流フィルター上で透析濾過した。
インビボの創傷治癒組成物
糖尿病(db/db)マウスモデル(すなわちBKS.Cg−m Dock7m+/+Leprdb/Jマウス)において、創傷治癒への実施例1に従って調製されたゲルグルカン単独(SG)、ビヒクル(カルボキシメチルセルロースまたはゲランガム)単独、またはSGおよびビヒクルの組み合わせの影響を全層除去した皮膚創傷の修復を分析することにより調べた。本発明の組み合わせ生成物もまた、本明細書に記載され実施例1において例証された、加熱および急冷法によって調製した。手短にいえば、グルカンおよびビヒクルは水溶液に溶解し、次いで、120℃前後に約18分間オートクレーブ中で加熱した。次いで、生成物を速やかに冷却し、実施例1に記載されたようにゲル形成させた。順応させた後(外乱がない5〜7日)、動物は、本社規則および糖尿病動物の特定要件に従って5匹の動物の群で収容した。実験的に傷つけた後、個々のケージ(ケージ寸法35×15×15cm、週に2度交換するおがくずを敷いた)に、12時間の明/暗サイクルで23℃の常温に維持した環境に動物を収容した。マウスには、食物(標準げっ歯類食餌)および水を適宜提供した。すべての麻酔事象の後、処置から完全に回復するまで動物を暖かい環境に置きモニターした。動物にはすべて、必要とされる手術および付加的な鎮痛薬の後、好適な無痛法(ブプレノルフィン)を受けさせた。動物の処置はすべて、本社ライセンスの下(PCD: 50/2505; PPL:40/3300;PIL:50/3482;PIL:70/4934)で本社の許可を設定して行った。動物の健康を調査の全体にわたって一日単位で病気のモニターをした。
本発明によるグルカン調製品の創傷治癒への影響
認識されている創傷治癒のインビボ遅延モデルにおいて組織修復を促進する能力に関して、本発明によるグルカン系調製品を評価するために調査を実施した。糖尿病患者は、特に足の潰瘍が蔓延しており、創傷治癒が損なわれやすい。創傷治癒におけるこの遅れはまた、自然発生の糖尿病性(db/db)マウス(すなわちBKS.Cg−m Dock7m+/+Leprdb/Jマウス)を含む糖尿病性動物に及ぶ。
供試材料
1.注射用水
2.精製水中の1.0%カルボキシメチルセルロース(CMC、Sigma C5013、ナトリウム塩)
3.0.3%Phytagel+4mM CaCl2
4.2.0%Methocel
5.Intrasite
6.2.0%SG
7.4.0%SG
8.1.0%CMC+1.0%SG
9.1.0%CMC+2.0%SG
10.1.0%CMC+4.0%SG
11.0.3%Phytagel+2.0%SG
12.rh−PDGF−BB[10%]+ rh−TGF−α[1%]−0.5%HPMC中
13.rh−PDGF−BB [10%]+rh−TGF−α[1%]−1.0%CMC中
BKS.Cg−m Dock7m +/+ Leprdb /J の糖尿病性マウスモデル
Image Pro Plus画像解析ソフトウェア(4.1.0.0版 Media Cybernetics, USA)を使用し、各評価時点で得られた、計測した創傷画像から創傷閉鎖を計算した。創傷閉鎖の過程が創傷収縮(周縁組織の内向きの動き)の効果を伴っているので、これも求めた。
1.時間とともに残存している百分率創傷面積
すなわち所定の時点の残存している開いた創傷の面積−負傷直後0日目の同じ創傷の面積と比較して。
2.時間とともに収縮する百分率創傷
すなわち、所定の時点で収縮した創傷面積間の差異、および、元の創傷面積[元の創傷面積の百分率として]。
創傷治癒の開始の評価(新生被包組織の生成):
創傷閉鎖:
所定の時点で所与の創傷に関して、創傷閉鎖は、負傷直後(すなわち0日目)の最初の創傷面積と比較して、残存している百分率創傷面積として表した。すべての処置群の残存している平均百分率創傷面積データは、下の表2に記載されている。
収縮は創縁の求心的動きである−創傷の「身体」内の肉芽粗織の圧密による。この過程を駆動する「圧密」力は、線維芽細胞血統の細胞中に存在すると考えられる。この調査において、%収縮を以下のように計算した。
調査した創傷はすべて、その「治癒」状態を確定するために、8日目までは一日単位で、続いて10、12、14、16、20および24日目に目視によって評価した。各創傷が「新生被包組織生成活性」を示しているか否か(すなわち、創傷が治癒過程を開始させたか否か)に関して採点した。各創傷は2人の独立の観察者が評価し、「新生被包組織生成活性」を示す創傷の平均百分率を各評価時点で処置群間で比較した。
グルカンゲル安定性
Woulgan(登録商標)を以下のように調製し、2.7%SBG(精製水中のBiotec可溶性酵母ベータグルカン)撹拌しながら、Blanose TM(7H4XF PH, Kirsch Pharma Gmbh,医薬品等級カルボキシメチルセルロース)を添加し最終濃度1.5%(w/v)にした。CMCが溶解するまで撹拌した。グリセリン(99.7%)を添加し20%の最終濃度にした。120℃でオートクレーブ中で18分間殺菌した。速やかに冷却し、実施例1に記載されたようにゲルを固化させた。次に、アルミニウムチューブ中で分解を加速する条件下(4℃〜37℃の温度変化を含む振盪)で最大6か月間保存した。SG単独を、すなわち、カルボキシメチルセルロースなしで、実施例1に従って調製し、同一条件下に保存した。出発物質SBGは、実施例1で使用したのと同一の出発物質である。
Claims (27)
- 0.1〜6%の濃度での酵母由来の水溶性ベータグルカンおよびカルボキシメチルセルロースを含み、37℃を超えて80℃までの(ゲルからゾルへの)融点を有するゲル組成物。
- グルカンおよびカルボキシメチルセルロースがヒドロゲルとして存在する、請求項1に記載の組成物。
- 酵母細胞壁由来の非グルカン残存物を含まない、請求項1または2に記載の組成物。
- グルカンがサッカロミュケス・ケレウィシアエ(Saccharomyces cerevisiae)に由来する、請求項1に記載の組成物。
- グルカンが、β−(1,3)連結グルコシル残基の骨格、および2個以上のβ−(1,3)連結グルコシル残基を含む側鎖を含むベータグルカンであって、側鎖がβ−(1,6)連結経由で骨格に結合している、請求項1から4のいずれか1項に記載の組成物。
- グルカンが繰り返しのβ−(1,6)連結グルコシル残基を本質的に含まない、請求項1から5のいずれか1項に記載の組成物。
- 水溶液中に0.1〜6%のグルカンおよび0.2〜3%のカルボキシメチルセルロースを含む、請求項1から6のいずれか1項に記載の組成物。
- 0.2〜4%のグルカンおよび0.25〜2%のカルボキシメチルセルロースを含む、請求項7に記載の組成物。
- グリセロールをさらに含む、請求項1から8のいずれか1項に記載の組成物。
- ゲルがpH4〜8で25℃でゲル形態で存在する、請求項1から9のいずれか1項に記載の組成物。
- 25℃で少なくとも1000cPの粘度を有する、請求項1から10のいずれか1項に記載の組成物。
- 少なくとも1500cPの粘度を有する、請求項11に記載の組成物。
- 2%のグルカンおよび1.5%のカルボキシメチルセルロースを含む、請求項1から12のいずれか1項に記載の組成物。
- 請求項1から13のいずれか1項に記載の組成物を製造する方法であって、以下のステップ:
a)グルカン分子の水溶液を処理し、グルカンの水素結合を解離し;
b)上記水溶液を処理し、グルカン内に水素結合を再形成すること
を含み、
カルボキシメチルセルロースをステップa)の前、又はステップa)の後であってステップb)の前に添加する、製造方法。 - ステップa)がカルボキシメチルセルロースと共にまたはカルボキシメチルセルロースなしでグルカン分子の水溶液を加熱するステップを含み、ステップb)がグルカンおよびカルボキシメチルセルロースの水溶液を冷却するステップを含む、請求項14に記載の方法。
- 水溶液がカルボキシメチルセルロースと共にまたはカルボキシメチルセルロースなしで少なくとも100℃で加熱される、請求項15に記載の方法。
- グルカンとカルボキシメチルセルロースの混合物がステップb)において速やかに冷却される、請求項15または請求項16に記載の方法。
- グルカンとカルボキシメチルセルロースの混合物が40℃未満に冷却される、請求項15から17のいずれか1項に記載の方法。
- 請求項14から18のいずれか1項に記載の方法によって得られる組成物。
- 対象の創傷または潰瘍の治癒を支援するまたは口腔の粘膜炎または癌を治療するための、請求項1から13および19のいずれか1項に記載の組成物であって、前記対象に投与される、組成物。
- 対象に局所的に適用される、請求項20に記載の組成物。
- 前記潰瘍が糖尿病性潰瘍である、請求項20に記載の組成物。
- 対象の創傷または潰瘍の治癒を支援するまたは口腔の粘膜炎または癌を治療するための医薬を製造するための、請求項1から13および19のいずれか1項に記載の組成物の使用。
- 前記潰瘍が糖尿病性潰瘍である、請求項23に記載の使用。
- 請求項1から13および19のいずれか1項に記載の組成物が適用または含浸されている、物理的支持体。
- 織布、不織布、編み物、発泡体または接着性の基材、貼付剤、包帯、膏薬、絆創膏、フィルム、およびガーゼからなる群から選択される、請求項25に記載の物理的支持体。
- 請求項1から13および19のいずれか1項に記載の組成物に皮膚細胞の集団を接触させることを含む、皮膚細胞増殖のインビトロの方法。
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RU2013127184A (ru) | 2015-01-10 |
RU2596496C2 (ru) | 2016-09-10 |
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JP2016180010A (ja) | 2016-10-13 |
EP2646477A1 (en) | 2013-10-09 |
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ES2794048T3 (es) | 2020-11-17 |
CA2818650C (en) | 2016-11-15 |
KR20130120495A (ko) | 2013-11-04 |
CN103347901B (zh) | 2017-08-08 |
DK2646477T3 (en) | 2017-03-06 |
CN103347901A (zh) | 2013-10-09 |
CA2818650A1 (en) | 2012-06-07 |
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US9956245B2 (en) | 2018-05-01 |
AU2011334627A1 (en) | 2013-05-02 |
US20130309286A1 (en) | 2013-11-21 |
KR101680148B1 (ko) | 2016-11-28 |
AU2011334627B2 (en) | 2015-04-16 |
EP2646477B1 (en) | 2017-01-25 |
EP3130609B9 (en) | 2020-12-02 |
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