JP6900405B2 - 溶解特性に優れたヒアルロン酸マイクロ構造体 - Google Patents
溶解特性に優れたヒアルロン酸マイクロ構造体 Download PDFInfo
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- JP6900405B2 JP6900405B2 JP2018565661A JP2018565661A JP6900405B2 JP 6900405 B2 JP6900405 B2 JP 6900405B2 JP 2018565661 A JP2018565661 A JP 2018565661A JP 2018565661 A JP2018565661 A JP 2018565661A JP 6900405 B2 JP6900405 B2 JP 6900405B2
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- hyaluronic acid
- skin
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- microneedle
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Description
上記ヒアルロン酸の全体重量を基準に、上記架橋されたヒアルロン酸の含有量は、5〜100%(w/w)であり、上記非架橋ヒアルロン酸の含有量は、0〜95%(w/w)であることを特徴とするマイクロ構造体を提供する。
(a)本発明は、i)架橋されたヒアルロン酸、またはii)架橋されたヒアルロン酸と非架橋ヒアルロン酸の混合物を含んでおり、皮膚透過時に皮膚内で溶解されることを特徴とするマイクロ構造体を提供する。
(b)本発明のマイクロ構造体を皮膚内へ透過させる場合には、皮膚内の溶解特性に優れており、架橋されたヒアルロン酸の含有量の比率によって、皮膚内の溶解速度を容易に調節することができる。また、マイクロ構造体に搭載された有用成分を皮膚内へ安定的に伝達しながらも、搭載された有用成分の放出速度を容易に調節できるので、薬理学的な活性物質または皮膚改善用の物質の経皮型伝達体として有用に使うことができる。
実施例1−1:架橋結合されたヒアルロン酸を含むマイクロ構造体の製造
シリコンウエハーにフォトリソグラフィ(photolithography)とエッチング(eching)製作技法を利用して、正または負のマスターモールド(positive or negative master mold)を製造した後、上記マスターモールドから硬化性シリコン(PDMS, polydimethylsilozane)を利用して、最終負モールド(negative mold)を製造した。
マイクロ構造体のアガロースゲル透過時の溶解速度を調べるために、実施例1−1で製造した全体のヒアルロン酸の重量に対して、架橋ヒアルロン酸の重量を0〜100%(w/w)の重量比で製造した架橋/非架橋ヒアルロン酸ハイドロゲルに同一の体積の0.1%メチレンブルー(methylene blue)を混合し、PDMSマイクロモールドに供給、注入および乾燥させた後、モールドを除去して、青色を帯びたヒアルロン酸マイクロ構造体を製造した。
本発明のマイクロ構造体の皮膚透過時の溶解特性を調べるために、架橋ヒアルロン酸と非架橋ヒアルロン酸が同一の重量比で含まれるようにすることを除いては、実施例1と同様の方法で、本発明のマイクロ構造体を製造した。製造したマイクロ構造体を豚の皮膚に一定の力で一定時間、透過(挿入)させた後、透過前後の構造体の変形の程度を確認して溶解速度を比較した。
上記で製造したマイクロ構造体を0.7cm×0.7cmに切った後、豚の皮膚に対して垂直方向に5kg重の力で10秒〜120分の間、力を加えて透過させた。光学顕微鏡(Optical Microscope)でマイクロ構造体の透過部位を観察し、皮膚透過前後のマイクロ構造体の変形の程度を、走査電子顕微鏡(SEM, JEOL JSM−7500F)を用いて、それぞれの長さと体積の面で透過前、透過10秒後、透過10分後、透過20分後、透過30分後、透過60分後および透過120分後に確認することにより、透過時の溶解速度を測定した。
本発明のマイクロ構造体の豚の皮膚に透過後に残っている構造体の体積変化による溶解速度を測定し、実験結果を下記表2と図2b及び図3bに示した。
本発明のマイクロ構造体の皮膚透過時の溶解特性を調べるために、実施例1と同様の方法で架橋ヒアルロン酸が全体ヒアルロン酸(非架橋ヒアルロン酸と架橋ヒアルロン酸)の重量に対して、0%、20%、33%、40%、60%、80%(w/w)の混合比で含まれるように精製水に添加し、完全に溶解させて架橋/非架橋ヒアルロン酸ハイドロゲル高分子を製造した。
本発明のマイクロ構造体の皮膚透過時の機械的な強度特性を調べるために、力変位装置(Zwick/Roell, Germany)を用いて、特定範囲の力を加えたとき、構造体の変形様相を確認した。
本発明のマイクロ構造体の薬物伝達体としての利用の可能性を調べるために、本発明のマイクロ構造体に蛍光物質を搭載(loading)した後、豚の皮膚に透過時の透過深さなどの拡散パターンと拡散速度を確認した。
本発明のマイクロ構造体の皮膚透過時の皮膚内溶解パターンと溶解速度を調べるために、蛍光物質が結合されたヒアルロン酸で製造された本発明のマイクロ構造体の豚の皮膚に透過時の溶解パターンと溶解速度を確認した。
Claims (7)
- 主成分として、架橋されたヒアルロン酸(cross−linked hyaluronic acid)と非架橋ヒアルロン酸(non−cross linked hyaluronic acid)の混合物を含む皮膚透過用のマイクロニードルであって、
上記ヒアルロン酸の全体重量を基準に、上記架橋されたヒアルロン酸の含有量は、15〜90%(w/w)であり、上記非架橋ヒアルロン酸の含有量は、10〜85%(w/w)であり、
上記架橋されたヒアルロン酸は、1〜20%の架橋度を有し、
上記ヒアルロン酸は、分子量が200〜400kDaであり、
マイクロニードル製造用のポリマー溶液における全ヒアルロン酸の固体濃度は、1〜10%(w/v)であり、
上記架橋されたヒアルロン酸は、1,4−ブタンジオールジグリシジルエーテル(1,4−Butanediol diglycidyl ether、BDDE)によって架橋されたものであり、
(a) 上記マイクロニードルを3kg重の力で皮膚に透過させると、上記架橋ヒアルロン酸がヒアルロン酸の全体重量を基準に、15〜30%である場合には、マイクロニードルの長さを基準に、皮膚透過10分後に溶解率が50〜60%であり、皮膚透過30分後に溶解率が65〜75%であり、皮膚透過60分後に溶解率が70〜85%であり;
(b) 上記マイクロニードルを3kg重の力で皮膚に透過させると、上記架橋ヒアルロン酸がヒアルロン酸の全体重量を基準に、30〜35%である場合には、マイクロニードルの長さを基準に、皮膚透過10分後に溶解率が45〜55%であり、皮膚透過30分後に溶解率が58〜68%であり、皮膚透過60分後に溶解率が65〜75%であり;
(c) 上記マイクロニードルを3kg重の力で皮膚に透過させると、上記架橋ヒアルロン酸がヒアルロン酸の全体重量を基準に、35〜50%である場合には、マイクロニードルの長さを基準に、皮膚透過10分後に溶解率が40〜55%であり、皮膚透過30分後に溶解率が51〜61%であり、皮膚透過60分後に溶解率が55〜65%であり;
(d) 上記マイクロニードルを3kg重の力で皮膚に透過させると、上記架橋ヒアルロン酸がヒアルロン酸の全体重量を基準に、50〜70%である場合には、マイクロニードルの長さを基準に、皮膚透過10分後に溶解率が35〜45%であり、皮膚透過30分後に溶解率が44〜54%であり、皮膚透過60分後に溶解率が48〜58%であり;
(e) 上記マイクロニードルを3kg重の力で皮膚に透過させると、上記架橋ヒアルロン酸がヒアルロン酸の全体重量を基準に、70〜90%である場合には、マイクロニードルの長さを基準に、皮膚透過10分後に溶解率が30〜45%であり、皮膚透過30分後に溶解率が41〜51%であり、皮膚透過60分後に溶解率が45〜56%である
ことを特徴とするマイクロニードル。 - 上記マイクロニードルの弾性係数(ヤング率、Young’s modulus)は、0.4〜0.7N/100μmであることを特徴とする請求項1に記載のマイクロニードル。
- 上記マイクロニードルは、皮膚透過時にマイクロニードルの高さの80%以上が透過されることを特徴とする請求項1に記載のマイクロニードル。
- 上記マイクロニードルは、生体適合性高分子または粘着剤をさらに含むことを特徴とする請求項1に記載のマイクロニードル。
- 上記生体適合性高分子は、カルボキシメチルセルロース(Carboxymethyl cellulose:CMC)、アルギン酸(alginic acid)、ペクチン、カラギーナン、コンドロイチン(硫酸)、デキストラン(硫酸)、キトサン、ポリリジン(polylysine)、コラーゲン、ゼラチン、カルボキシメチルキチン(carboxymethyl chitin)、フィブリン、アガロース、プルランポリラクチド、ポリグリコール酸(PGA)、乳酸−グリコール酸共重合体(PLGA)、プルランポリ酸無水物(polyanhydride)、ポリオルトエステル(polyorthoester)、ポリエーテルエステル(polyetherester)、ポリカプロラクトン(polycaprolactone)、ポリエステルアミド(polyesteramide)、ポリ(酪酸)、ポリ(吉草酸)、ポリウレタン、ポリアクリレート、エチレン−酢酸ビニル共重合体、アクリル置換セルロースアセテート、非−生分解性ポリウレタン、ポリスチレン、ポリ塩化ビニル、ポリフッ化ビニル、ポリ(ビニルイミダゾール)、クロロスルホン化ポリオレフィン(chlorosulphonate polyolefins)、ポリエチレンオキサイド、ポリビニルピロリドン(PVP)、ポリエチレングリコール(PEG)、ポリメタクリレート、ヒドロキシプロピルメチルセルロース(HPMC)、エチルセルロース(EC)、ヒドロキシプロピルセルロース(HPC)、シクロデキストリン、これらの高分子を形成する単量体の共重合体、及びセルロースで構成された群から選択された1以上の高分子であることを特徴とする請求項4に記載のマイクロニードル。
- 上記粘着剤は、シリコーン、ポリウレタン、物理的な接着剤(ゲッコー)、ポリアクリル、エチルセルロース、ヒドロキシメチルセルロース、エチレン酢酸ビニル、及びポリイソブチレンで構成された群から選択された1以上の粘着剤であることを特徴とする請求項4に記載のマイクロニードル。
- 上記マイクロニードルは、薬理学的活性成分または美容成分をさらに含むことを特徴とする請求項1から6のいずれかに記載のマイクロニードル。
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US7963997B2 (en) * | 2002-07-19 | 2011-06-21 | Kensey Nash Corporation | Device for regeneration of articular cartilage and other tissue |
JP3420851B2 (ja) | 1994-12-06 | 2003-06-30 | 株式会社資生堂 | 癒着防止剤 |
JP4210231B2 (ja) | 2004-03-25 | 2009-01-14 | 株式会社資生堂 | 皮膚のシワを改善する美容方法及びシワ改善具 |
FR2909560B1 (fr) | 2006-12-06 | 2012-12-28 | Fabre Pierre Dermo Cosmetique | Gel d'acide hyaluronique pour injection intradermique |
CA2711108C (en) * | 2008-02-27 | 2016-11-22 | Kci Licensing Inc. | System and method for healing a wound at a tissue site |
JP5267910B2 (ja) | 2008-02-28 | 2013-08-21 | コスメディ製薬株式会社 | マイクロニードルアレイ |
EP2346563B1 (en) | 2008-10-07 | 2018-08-29 | Tuo Jin | Phase-transition polymeric microneedles |
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JP2015522342A (ja) | 2012-06-29 | 2015-08-06 | イーエルシー マネージメント エルエルシー | 1つ以上の化粧品成分を含むマイクロニードル |
JP6546091B2 (ja) * | 2012-09-13 | 2019-07-17 | アミール,アブラハム | 皮膚増大(skinaugmentation)のための送達デバイスおよび方法 |
KR101435888B1 (ko) * | 2012-10-23 | 2014-09-01 | 연세대학교 산학협력단 | 히알루론산을 이용한 생분해성 마이크로니들 제조방법 |
AU2013364053B2 (en) * | 2012-12-21 | 2018-08-30 | Corium Pharma Solutions, Inc. | Microarray for delivery of therapeutic agent and methods of use |
CN104095761A (zh) * | 2013-04-08 | 2014-10-15 | 上海汇林医药科技有限公司 | 一种高分子聚合物微针贴剂及其应用 |
JP6906885B2 (ja) | 2014-11-14 | 2021-07-21 | ロレアル | しわを減少させるためのマイクロニードルシート |
CA2975076C (en) | 2015-02-13 | 2021-07-20 | Endo Derma Co.,Ltd. | Microstructure using crosslinked hyaluronic acid hydrogel and method for preparing the same |
CN104921961B (zh) * | 2015-05-25 | 2017-11-17 | 成都凤磐生物科技有限公司 | 一种多效修复的可降解生物微针贴 |
BR112018011936B1 (pt) | 2015-12-28 | 2022-10-04 | Endoderma Co., Ltd | Microestrutura para absorção transdérmica e método para a fabricação da mesma |
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TW201938175A (zh) | 2019-10-01 |
WO2017217818A1 (ko) | 2017-12-21 |
TW201808310A (zh) | 2018-03-16 |
BR112018075703A2 (pt) | 2019-04-02 |
CN109310625A (zh) | 2019-02-05 |
TWI675666B (zh) | 2019-11-01 |
KR20170142127A (ko) | 2017-12-27 |
EP3473242A1 (en) | 2019-04-24 |
EP3473242A4 (en) | 2019-06-19 |
US11013670B2 (en) | 2021-05-25 |
MX2018015607A (es) | 2019-03-14 |
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