JP2022504694A - シルクベースの材料の圧縮および熱で支援される生産 - Google Patents
シルクベースの材料の圧縮および熱で支援される生産 Download PDFInfo
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Abstract
Description
本出願は、2018年10月10日出願の米国特許仮出願第62/743,975号に関連し、それに基づく優先権を主張し、そしてすべての目的のためにその全体を本明細書に援用する。
本発明は、米国国立衛生研究所によって付与された助成金AR068048およびDE016525、ならびに米国空軍によって付与された助成金FA9550-17-1-0333の下で政府支援によってなされた。政府は本発明に一定の権利を有する。
シルクは、概して、カイコ、クモ、サソリ、ハエなどの鱗翅目の幼虫によって自然に生成されるタンパク質ポリマーとして規定される。カイコシルクは何世紀にもわたって織物生産に商業的に使用されており、歴史上最も研究されたタンパク質ベースの材料の1つとして認識されている。カイコシルクおよびクモシルクは最も研究され、広く使用されており、その生体適合性、生分解性および並外れた機械的性質のために、薬物送達および組織工学などの生物医学的用途に優れた材料である。カイコシルクは何世紀にもわたって縫合材料として使用されてきたが、近年、生体内での分解速度が調整可能であること、ならびに繊維、フィルム、ゲル、および発泡体などの複数の種類の材料に製造されることができることにより、さまざまな医学的用途をもつバイオマテリアルとして大きな注目を集めている。しかし、従来のポリマー産業と比較して、シルクの加工およびシルクベースの材料の生産のために開発された技術は非常に限られている。
本明細書に記載される組成物および方法は、とりわけ、新規の圧縮および熱ベースの方法を使用するシルクベースの材料の生産に関する。本明細書のシルクベースの材料には、純粋なシルク材料(例えば、シルクフィルム、シルクモノリス材料)および/または複合材料(例えば、シルク-グラフェン複合材料、シルク-酵素複合材料)が含まれる。本明細書に記載されるプロセスは、透明なシルクフィルム、シルクの整形外科用のデバイスおよび機能性シルクパターンなどの、溶液ベースのプロセスによって製造された材料の特性に匹敵するかまたはさらに優れた特性をもつ多様なシルク材料を生成することが示されている。さらに、一部の実施形態では、これらのプロセスを使用して、シルク分解酵素および導電性シルク-グラフェン複合材料を組み込むことにより、分解性を制御できるシルク材料などの、溶液ベースのプロセスでは達成できない機能性シルクフォーマットを製造することができる。一部の実施形態では、本明細書に記載の製造技術は、コラーゲンおよび組換えシルクタンパク質のような他の構造的な生体高分子に拡張することができる。
定義
Claims (39)
- (i)実質的にアモルファス構造を含むシルクフィブロイン材料を提供するステップと;
(ii)シルクフィブロイン物品を形成するために前記シルクフィブロイン材料に少なくとも1つの高温および高圧を印加するステップとを含む方法であって、前記印加するステップは、少なくとも一部の前記シルクフィブロインと、前記シルクフィブロイン材料中のフィブロインの構造変化との間の融合を誘導する、方法。 - (i)所望の結晶化度および所望の材料特性の所望のシルクフィブロイン物品を生産するための高温および高圧を選択するステップと;
(ii)シルクフィブロイン物品を形成するために、実質的にアモルファス構造を含むシルクフィブロイン材料に前記高温および前記高圧を印加するステップとを含む方法であって、前記シルクフィブロイン物品は、前記所望の結晶化度および前記所望の材料特性を有する、方法。 - 前記印加するステップが、少なくとも一部の前記シルクフィブロインと、前記シルクフィブロイン材料中のフィブロインの構造変化との間の融合を誘導する、請求項2に記載の方法。
- 前記印加するステップが、前記シルクフィブロイン材料への高温と高圧の両方の適用を含む、前記請求項のいずれか一項に記載の方法。
- 前記シルクフィブロイン物品が実質的に均質である、前記請求項のいずれか一項に記載の方法。
- 前記シルクフィブロイン物品が、約10%(w/w)またはそれ以上の量のシルクを含む、前記請求項のいずれか一項に記載の方法。
- 前記印加するステップが、熱プレスであるか、またはそれを含む、前記請求項のいずれか一項に記載の方法。
- 前記熱プレスが、少なくとも1MPaの圧力で行われる、請求項7に記載の方法。
- 前記熱プレスが、25℃~200℃の間の温度で行われる、請求項7または8に記載の方法。
- 前記方法が、所望の結晶化度および所望の材料特性を生成するために、前記シルクフィブロイン材料に含める可塑剤の量を選択するステップ、および前記選択された量で前記シルクフィブロイン材料に前記可塑剤を含めるステップをさらに含み、前記可塑剤が必要に応じて水である、前記請求項のいずれか一項に記載の方法。
- 前記高温および高圧が同時に印加される、前記請求項のいずれか一項に記載の方法。
- 高圧が印加された後に高温が前記シルクフィブロイン材料に印加される、前記請求項のいずれか一項に記載の方法。
- 前記印加するステップが型の中で行われる、前記請求項のいずれか一項に記載の方法。
- 前記印加するステップが型の中で行われない、請求項1~12のいずれか一項に記載の方法。
- 前記シルクフィブロイン物品を加工するステップをさらに含む、前記請求項のいずれか一項に記載の方法。
- 加工するステップが、機械加工、旋削、圧延、ねじ転造、孔あけ、フライス加工、サンディング、パンチング、ダイカット、押出し、化学エッチング、コーティング、成形、およびそれらの任意の組合せのうちの少なくとも1つであるか、またはそれらを含む、請求項15に記載の方法。
- 前記シルクフィブロイン物品が、フィルム、繊維、メッシュ、針、チューブ、プレート、ねじ、ロッドまたは任意の所望の形状であるか、またはそれらを含む、前記請求項のいずれか一項に記載の方法。
- 前記印加するステップが、シルクフィブロインの構造変化をもたらし、前記印加するステップの前の前記シルクフィブロイン材料中のβシートのレベルと比較して少なくとも1%の増加を伴うβシート構造を誘導する、前記請求項のいずれか一項に記載の方法。
- 前記シルクフィブロイン物品が実質的に透明である、前記請求項のいずれか一項に記載の方法。
- 前記シルクフィブロイン物品が、マクロパターニング、マイクロパターニングおよびナノパターニングの少なくとも1つに供されている、前記請求項のいずれか一項に記載の方法。
- 前記シルクフィブロイン物品が少なくとも1つの添加剤を含む、前記請求項のいずれか一項に記載の方法。
- 前記シルクフィブロイン材料が、前記印加するステップの前に、少なくとも1つの添加剤と混合されて、複合シルクフィブロイン物品を形成する、請求項21に記載の方法。
- 前記添加剤が、有機もしくは無機分子、有機高分子、無機高分子、生体高分子、例えば、ペプチドおよびタンパク質;導電性材料、炭素系材料、抗体およびその抗原結合フラグメント;抗原;核酸;核酸類似体および誘導体;糖類;免疫原;天然化合物、および細胞、細菌、または組織などの生物学的システムからの抽出物;合成材料;金属材料;合金;疎水性材料;親水性材料;ナノ材料;およびそれらの任意の組合せのうちの少なくとも1つであるか、またはそれらを含む。請求項21または22に記載の方法。
- 有機高分子が、少なくとも1つの酵素、例えばプロテアーゼであるか、またはそれを含む、請求項23に記載の方法。
- 前記酵素の前記活性が、高温および圧力下のシルクによって安定化される、請求項24に記載の方法。
- 前記プロテアーゼが、プロテアーゼXIV、プロテイナーゼK、α-キモトリプシン、コラゲナーゼ、マトリックスメタロプロテイナーゼ-1(MMP-1)およびMMP-2のうちの1つまたは複数であるか、またはそれらを含む、請求項24または25に記載の方法。
- 導電性材料が、無機導電性材料(例えば、銀、金、酸化鉄)、有機導電性材料(例えば、グラフェン)、金属、合金、半導体材料および/または共役ポリマーであるか、またはそれらを含む、請求項23に記載の方法。
- 前記添加剤が、0.001重量%~95.0重量%の間の割合で前記シルクフィブロイン材料と混合される、請求項22~27のいずれか一項に記載の方法。
- 前記シルクフィブロイン物品が、37℃で水性環境に30日間曝された後、少なくとも1重量%分解する、前記請求項のいずれか一項に記載の方法。
- 前記シルクフィブロイン物品が生体吸収性である、前記請求項のいずれか一項に記載の方法。
- 前記シルクフィブロイン物品が熱成形特性を有し、高温または高圧で所望の形状に再成形することができる、前記請求項のいずれか一項に記載の方法。
- 前記実質的にアモルファス構造を含むシルクフィブロイン材料のβシート含有量が、60%またはそれ未満、50%またはそれ未満、40%またはそれ未満、30%またはそれ未満、20%またはそれ未満、10%またはそれ未満、5%またはそれ未満、あるいは1%またはそれ未満である、前記請求項のいずれか一項に記載の方法。
- 請求項1~32のいずれか一項に記載の方法によって得られるシルクフィブロイン物品。
- 前記シルクフィブロイン物品が、包装材料であるか、またはそれらを含む、請求項33に記載の物品。
- 前記包装材料が、電子デバイス、薬物送達システム、パターニング、成形、およびそれらの任意の組合せの製造での使用に適している、請求項34に記載の物品。
- 先行する請求項のいずれか一項に記載のステップを含む方法によって作製されたシルクフィブロイン物品であって;前記シルクフィブロイン材料が、一緒に融合されている少なくとも一部の前記シルクフィブロインを含む、シルクのコンフォメーション変化を受けた固体シルク物品に変換されている、シルクフィブロイン物品。
- 半結晶性シルクフィブロインを含むシルクフィブロイン物品であって、前記シルクフィブロイン物品のガラス転移温度が約40℃~120℃の間である、シルクフィブロイン物品。
- 前記シルクフィブロイン物品が実質的に均質である、請求項33~37のいずれか一項に記載のシルクフィブロイン物品。
- 前記シルクフィブロイン物品の前記曲げ強度が少なくとも5MPaであり、シルクフィブロイン物品の実質的に全体の密度は、少なくとも1.20g/cm3である、請求項33~38のいずれか一項に記載のシルクフィブロイン物品。
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CN113292751A (zh) * | 2021-05-20 | 2021-08-24 | 深圳市银宝山新科技股份有限公司 | 一种高强度丝素蛋白膜的制备方法 |
CN114404674B (zh) * | 2022-01-24 | 2023-02-28 | 点云生物(杭州)有限公司 | 一种生物相容性良好的可降解界面螺钉及其制备方法 |
WO2024043926A1 (en) * | 2022-08-22 | 2024-02-29 | Canon Virginia, Inc. | Base material for silk fibroin molded body and the manufacturing method |
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