JP2014527988A - 弾性繊維のinvivo合成 - Google Patents
弾性繊維のinvivo合成 Download PDFInfo
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- JP2014527988A JP2014527988A JP2014532189A JP2014532189A JP2014527988A JP 2014527988 A JP2014527988 A JP 2014527988A JP 2014532189 A JP2014532189 A JP 2014532189A JP 2014532189 A JP2014532189 A JP 2014532189A JP 2014527988 A JP2014527988 A JP 2014527988A
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Abstract
Description
最近の研究は、若年期の弾性繊維形成を支持するメカニズムおよび因子を理解すること、およびそれらが成人期に存在するかどうかを検討することに集中している(Wagenseil JE & Mecham RP. New insights into elastic fiber assembly. Birth Defects Res C Embryo Today. 2007 Dec;81(4):229-40.)。
・弾性プロフィールを修復すべき組織を有する個体を得、
・弾性繊維を形成するために組織に発現した因子がそれから弾性繊維を合成するために投与したトロポエラスチンと関連することができるように一定期間、組織に投与したトロポエラスチンを維持するために選択した治療計画に従って個体にトロポエラスチンを投与し、
・それにより個体の組織の弾性プロフィールを修復または再構築する。
個体の組織の弾性プロフィールの変性を最小限にする方法を提供する:
・弾性プロフィールの変性を最小限にすべき組織を有する個体を得、
・弾性繊維を形成するために組織に発現した因子がそれから弾性繊維を合成するために投与したトロポエラスチンと関連することができるように一定期間、組織に投与したトロポエラスチンを維持するために選択した治療計画に従って個体にトロポエラスチンを投与し、
・それにより個体の組織の弾性プロフィールの変性を最小限にする。
・弾性プロフィールを改善すべき組織を有する個体を得、
・弾性繊維を形成するために組織に発現した因子がそれから弾性繊維を合成するために投与したトロポエラスチンと関連することができるように一定期間、組織に投与したトロポエラスチンを維持するために選択した治療計画に従って個体にトロポエラスチンを投与し、
・それにより加齢組織の弾性プロフィールを幼年期の組織の該プロフィールにより良く似るように改善する方法を提供する。
・外観を改善すべき組織を有する個体を得、
・弾性繊維を形成するために組織に発現した因子がそれから弾性繊維を合成するために投与したトロポエラスチンと関連することができるように一定期間、組織に投与したトロポエラスチンを維持するために選択した治療計画に従って個体にトロポエラスチンを投与し、
・それにより加齢組織の外観を改善する。
・瘢痕化組織または線維性組織を有する個体を得、
・弾性繊維を形成するために組織に発現した因子がそれから弾性繊維を合成するために投与したトロポエラスチンと関連することができるように一定期間、組織に投与したトロポエラスチンを維持するために選択した治療計画に従って個体にトロポエラスチンを投与し、
・それにより瘢痕化組織または線維性組織の弾性プロフィールを改善する。
・加齢組織または損傷組織を有する個体を得、
・弾性繊維を形成するために組織に発現した因子がそれから弾性繊維を合成するために投与したトロポエラスチンと関連することができるように一定期間、組織に投与したトロポエラスチンを維持するために選択した治療計画に従って個体にトロポエラスチンを投与し、
・それにより加齢組織または損傷組織の弾性機能を改善する。
・個体を得、
・該個体の皮膚上の治療領域を特定し、ここで、該治療領域は、弾力性をもたらすべき皮膚の領域である、
・該治療領域内にトロポエラスチン組成物を注射して、治療領域外の皮膚に比べて増加した治療領域内のトロポエラスチンの量を確立し、
・予め決定した時間、治療領域内のトロポエラスチンの量を維持することにより個体の皮膚に弾力性を与える。
・個体の組織の弾性プロフィールを修復し、
・個体の皮膚の弾性プロフィールの変性を最小限にし、
・加齢組織の弾性プロフィールを幼年期の組織の該プロフィールとより良く似るように改善し、
・加齢組織の外観を改善し、
・瘢痕化組織または線維性組織の弾性プロフィールを、組織損傷前の瘢痕組織または線維性組織を含む関連組織の該プロフィールとより良く似るように改善し、
・加齢組織または損傷組織の弾性機能を幼年期または損傷前の関連組織の弾性機能とより良く似るように改善する。
本発明の重要な知見は、本発明者らが開発し、本明細書に実施例に例示した新規アッセイシステムから得られる。該アッセイシステムは、成人ヒト細胞を用い、in vitroで弾性繊維を形成する。該システムは、弾性繊維形成の各工程の分析を可能にし、弾性繊維形成に必要な成分とプロセスを確認するために操作することができる。
(i)一定期間にわたりトロポエラスチンを徐々に放出する持続放出製剤でトロポエラスチンを投与。
(i)皮膚の身体的外観を改善。
(ii)線維性および瘢痕化組織のエラスチン含有量の増加。
(iii)軟骨質または血管系の弾力性の改善。
典型的には、トロポエラスチンアイソフォームは、組織がヒト皮膚組織である場合はSHELδ26Aである。
・ジクロフェナク:抗炎症(および光線角化症の減少と関連する、例えばSolaraze参照)
・リスラスチン:弾性繊維形成を促進。
・アミノ酸Gly、Val、Ala、Pro:トロポエラスチン残基の75%に相当。
・ビタミンC、E:ビタミンCは新規コラーゲン形成を助ける。両ビタミンとも抗酸化剤である。
・日焼け止め:日差しによるタンパク質加水分解を制限。
・化学増強剤:成分の角質層を横切る移動を助ける。
・加湿柔軟剤によるpH調整:皮膚にpHを送達。加湿は老化皮膚に関連する。
・個体を得、
・個体の皮膚の治療領域を限定し(ここで、該治療領域は弾力性を与えるべき皮膚の領域である)、
・治療領域内のトロポエラスチンの量が治療領域外の皮膚に比べて増加するように、治療領域にトロポエラスチン組成物を注射し、
・予め決定した期間、治療領域中のトロポエラスチンの量を維持することにより、個体の皮膚の弾力性を得る。
c) 蛍光画像化
結果および考察
a)種々の年齢群由来のヒト皮膚繊維芽細胞によるエラスチン繊維形成
b) 動物細胞によるエラスチン繊維形成
c) 気道平滑筋細胞によるエラスチン繊維形成
d)トロポエラスチン誘導体を用いたときのエラスチン繊維形成
e) 細胞の収縮力が損なわれたときのエラスチン繊維形成
f) 反復トロポエラスチン添加後のエラスチン繊維形成
g) in vitro形成繊維の弾力性
h) 弾性繊維形成の時間経過
i) リシルオキシダーゼの関与
j) 小球の整列
k) 小球の処理
(1)平均直径615±153 nmの高密度シェルに取り囲まれた小球。この小球は細胞と直接接触している。
(2)破裂し、内容物があふれ出した小球。
(3)合体した破裂小球から形成された弾性塊。
l) 動物モデル
1.コントロール:架橋コラーゲンテンプレートのみ
2.試験A:10%トロポエラスチン存在下で架橋した架橋コラーゲンテンプレート
3.試験B:修飾HAと架橋したトロポエラスチンマトリックスの上部に適用した架橋コラーゲンテンプレート。
実施例2. エラスチン注射可能皮膚再生製剤を用いるヒト皮膚の治療を評価するための臨床試験
方法:
結果:
インプラント部位の組織病理学分析:
皮膚厚および固化の測定
表1:皮膚厚測定値
皮膚弾力性の測定値
表2:皮膚弾性伸張(Ue)
患者の評価
Claims (18)
- 以下の工程を含む個体の皮膚に弾力性を与える方法:
・個体を得、
・個体の皮膚の治療領域を特定し、ここで、該治療領域は、弾力性を与えるべき皮膚の領域である、
・治療領域内に治療領域の外側の皮膚より増加したトロポエラスチン量を確立するために、治療領域内の皮膚組織にトロポエラスチン組成物を注射し、
・予め決定した期間、治療領域のトロポエラスチン量を維持し、
それによって、個体の皮膚に弾力性を与える。 - 該トロポエラスチン組成物が治療領域内の皮膚組織におけるトロポエラスチンの持続放出に適応し、それにより、予め決定した期間、治療領域のトロポエラスチン量を維持する請求項1記載の方法。
- 該トロポエラスチン組成物が5〜200mg/mLの量のトロポエラスチンを含む請求項1または2記載の方法。
- 該トロポエラスチン組成物がトロポエラスチンおよびヒアルロン酸を含む先の請求項のいずれかに記載の方法。
- トロポエラスチンがヒアルロン酸と結合している先の請求項のいずれかに記載の方法。
- 該組成物が0.5〜50mg/ml トロポエラスチン+0.1%〜1%ヒアルロン酸を含む先の請求項のいずれかに記載の方法。
- 該組成物がトロポエラスチンからなる水性組成物である先の請求項のいずれかに記載の方法。
- 該組成物がトロポエラスチンおよびヒアルロン酸からなる水性組成物である請求項1〜6のいずれかに記載の方法。
- トロポエラスチン組成物の各注射容量が約10〜100uLである先の請求項のいずれかに記載の方法。
- トロポエラスチン組成物を予め決定した治療計画に従って治療領域内の皮膚組織に注射し、該治療計画が特定の治療回数を規定し、各治療が特定の時点で注射の形であり、それにより、予め決定した期間、治療領域内のトロポエラスチンの量を維持する、先の請求項のいずれかに記載の方法。
- 少なくとも1の治療が複数の注射を含む請求項10記載の方法。
- 該治療の各注射が、予め決定した距離で他の注射部位から離れた位置の注射部位になされる請求項11記載の方法。
- 各注射部位が他の注射部位と約10mm〜3cm離れている請求項12記載の方法。
- 該計画が2〜8週間ごとの治療領域内への注射を含む請求項10記載の方法。
- 該計画が約1〜6カ月間、好ましくは約1〜3カ月間の期間に及ぶ請求項10記載の方法。
- 該皮膚が20〜70歳の個体のものである先の請求項のいずれかに記載の方法。
- 治療部位が、頬、目、首、デコルタージュ、手、瘢痕、または皮膚線条の近く、ほぼその部位、その中もしくはその隣接部である先の請求項のいずれかに記載の方法。
- 皮膚が、光老化、弛緩、緩和皮下組織、しわ、瘢痕、または皮膚線条により特徴付けられる先の請求項のいずれかに記載の方法。
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Free format text: JAPANESE INTERMEDIATE CODE: R350 |