JP7128902B2 - 複数の電界紡糸繊維からなる綿形状の構造を有する骨再生用材料 - Google Patents
複数の電界紡糸繊維からなる綿形状の構造を有する骨再生用材料 Download PDFInfo
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Description
aron W. James et al., “A review of the Clinical Side Effects of Bone Morphogenetic Protein-2,” Tissue Eng. Part B Rev., 2016, 22(4): 284-297) 従って、BMPを治療部位に閉じ込めることが不可欠である。例えば、BMP-2を骨代替/修復材料に確実に結合させ、BMP-2を治療部位から離れて拡散させないようにすることが不可欠である。
するために用いる方法は独特である。2019年9月13日出願のPCT/JP2019/036052に、Orthorebirth社の方法の詳細が記載されている。この太い電界紡糸された生分解性繊維を製造することにより、本発明者らは、繊維上に粒子が露出するように、繊維中に多量のカルシウム化合物粒子を含有させることが可能となった。また、太い繊維は、骨修復部位に埋植した後に繊維の形状を維持する機械的強度を有する。
7. Loading 30分間結合させる。 (結合は20分ほどで終了する);結合しなかった成分の回収8. 小型遠心機により最高回転速度で4-5分間、チューブを遠心する。9. Non-bound(Flow Through) チューブ内の上部の上清にピペットを挿入し、結合していない成分をピペットで取り除く。(注: ピペットチップの先端からReBOSSISが入らないように注意し、チューブ下部に先端を置き、残りを廃棄する。);洗浄10. Wash PBS又は洗浄用酢酸緩衝液のいずれか500μLを加える;11. 穏やかにボルテックスする。5分間くり返し混合した後、再び穏やかにボルテックスする。;12. 小型遠心機により最高回転速度でチューブを4-5分間遠心し、洗浄バッファーを除く。洗浄を更に2回繰り返す。溶出13. Elution 164μlの非還元1×SDS PAGEゲル色素(BMP-2ダイマーを破壊するため、β-メルカプトエタノールは含まない)を添加することによって溶出させる;14. 穏やかにボステックスし、5分間インキュベートした後、再びボルテックスを行う。;15. 小型遠心機により最高速度で4~5分間チューブを遠心し、溶出物を回収する。;16. 以下のようにゲルをロードする: ReBOSSIS(登録商標) Load:10 μl, Non-Bound 10 μl, Wash 10μl, Elution 11 μl。
の強度の比較から、FT及びLdレーンは同等程度のたんぱく質量を示しており、ほとんどのBSAはReBOSSISに結合せずに通過していることを示している。すなわち、BSAはネガティブコントロールとして振舞い、ReBOSSIS繊維には結合しない。WレーンとELレーンは、BSAバンドがやや確認できるものの、WレーンとELレーンのBSAバンドのレベルはLdレーンのレベルと比べてかなり低く、BSAはReBOSSISにほとんど結合しないことを示している。
PLGA:乳酸・グリコール酸共重合体SiV:シロキサン含有バテライト(炭酸カルシウム(CaCO3)の結晶相の一つ)β-TCP:β相リン酸三カルシウム
Claims (3)
- 骨形成タンパク質-2(BMP-2)と、複数の電界紡糸された生分解性繊維から形成された綿形状の構造を含む骨誘導性骨再生用材料であって、
前記生分解性繊維は、前記骨誘導性骨再生用材料が十分な機械的強度を有し、尚且つ体液が前記骨再生用材料を通して浸透するための十分なスペースを前記生分解性繊維の繊維間に有するように10~100μmの径を有しており、
前記生分解性繊維はβ―TCP粒子を25~65vol%含んでおり、前記β―TCP粒子の粒子径は1~5μmであり、粒子の一部が前記生分解性繊維の表面上に露出し、粒子の残りの部分は前記生分解性繊維内に埋め込まれており、
前記生分解性繊維の表面上に露出した前記β―TCP粒子にターゲット型BMP-2が結合されており、
前記骨誘導性骨再生用材料を患者の骨欠損部に埋植すると、間葉系幹細胞を含む体液が前記綿形状の構造を形成する複数の繊維間の間隙に浸透し、前記β―TCP粒子と結合した前記ターゲット型BMP-2に接触して、前記骨欠損部において骨形成が誘導され、
前記ターゲット型BMP-2は、BMP-2に融合されたβ-TCP結合ペプチドを含み、前記β-TCP結合ペプチドは、LLADTTHHRPWT (SEQ ID NO: 1), GQVLPTTTPSSP (SEQ ID NO: 2), VPQHPYPVPSHK (SEQ ID NO: 3), HNMAPATLHPLP (SEQ ID NO: 4), QSFASLTNPRVL (SEQ ID NO: 5), HTTPTTTYAAPP (SEQ ID NO: 6), QYGVVSHLTHTP (SEQ ID NO: 7), TMSNPITSLISV (SEQ ID NO: 8), IGRISTHAPLHP (SEQ ID NO: 9), MNDPSPWLRSPR (SEQ ID NO: 10), QSLGSMFQEGHR (SEQ ID NO: 11), KPLFTRYGDVAI (SEQ ID NO: 12), MPFGARILSLPN (SEQ ID NO: 13), QLQLSNSMSSLS (SEQ ID NO: 14), TMNMPAKIFAAM (SEQ ID NO: 15), EPTKEYTTSYHR (SEQ ID NO: 16), DLNELYLRSLRA (SEQ ID NO: 17), DYDSTHGAVFRL (SEQ ID NO: 18), SKHERYPQSPEM (SEQ ID NO: 19), HTHSSDGSLLGN (SEQ ID NO: 20), NYDSMSEPRSHG (SEQ ID NO: 21), 及び ANPIISVQTAMD (SEQ ID NO: 22) からなる群から選択されるアミノ酸配列を有する、
前記骨誘導性骨再生用材料。
- 前記生分解性繊維は40~60 vol%のβ―TCP粒子を含有する、請求項1に記載の骨誘導性骨再生用材料。
- 前記生分解性繊維に含まれる生分解性ポリマーが乳酸・グリコール酸共重合体 (PLGA)である、請求項1に記載の骨誘導性骨再生用材料。
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| JP2022100415A JP7174880B2 (ja) | 2018-12-25 | 2022-06-22 | 複数の電界紡糸繊維からなる綿形状の構造を有する骨再生用材料 |
| JP2022178131A JP7381692B2 (ja) | 2018-12-25 | 2022-11-07 | 複数の電界紡糸繊維からなる綿形状の構造を有する骨再生用材料 |
| JP2023183097A JP7400145B1 (ja) | 2018-12-25 | 2023-10-25 | 複数の電界紡糸繊維からなる綿形状の構造を有する骨再生用材料 |
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| US201862784746P | 2018-12-25 | 2018-12-25 | |
| US62/784,746 | 2018-12-25 | ||
| PCT/US2019/068509 WO2020139901A1 (en) | 2018-12-25 | 2019-12-25 | A bone regeneration material having a cotton-wool like structure formed of a plurality of electrospun fibers |
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| EP (1) | EP3902572B1 (ja) |
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| AU (1) | AU2019416205B2 (ja) |
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| JP7541280B2 (ja) * | 2019-08-27 | 2024-08-28 | 邦夫 石川 | 医療用炭酸カルシウム組成物、および関連医療用組成物、ならびにこれらの製造方法 |
| BR112022020809A2 (pt) * | 2020-04-15 | 2023-02-23 | Theradaptive Inc | Composições e métodos para entrega terapêutica direcionada ao osso |
| CN119455134B (zh) * | 2024-11-19 | 2025-12-05 | 四川大学 | 一种基于dna四面体的复合物及其制备方法和用途 |
Citations (15)
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|---|---|---|---|---|
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| CN1456360A (zh) | 2003-05-28 | 2003-11-19 | 东南大学 | 可吸收超细纤维组织修复材料及其制备方法 |
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| JP5179124B2 (ja) | 2007-09-06 | 2013-04-10 | 矢橋工業株式会社 | 骨再生誘導膜、およびその製造方法 |
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| CN203235057U (zh) * | 2012-01-13 | 2013-10-16 | 株式会社奥梭瑞贝斯 | 用于填充骨缺损的纤维填料 |
| SG11201510208VA (en) | 2013-07-09 | 2016-01-28 | Nat Univ Corp Nagoya Inst Tech | Bone defect filling material, and production method therefor |
| CN109010924A (zh) * | 2018-07-10 | 2018-12-18 | 扬州大学 | Bmp2-pla/hap复合材料骨修复支架的制备方法 |
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| JP7174880B2 (ja) | 2022-11-17 |
| KR20210107082A (ko) | 2021-08-31 |
| EP3902572A1 (en) | 2021-11-03 |
| WO2020139901A1 (en) | 2020-07-02 |
| US20220395610A1 (en) | 2022-12-15 |
| KR102906820B1 (ko) | 2026-01-06 |
| CA3124677A1 (en) | 2020-07-02 |
| US20210023269A1 (en) | 2021-01-28 |
| EP3902572B1 (en) | 2026-03-04 |
| AU2019416205B2 (en) | 2026-01-29 |
| MA54618A (fr) | 2021-11-03 |
| AU2019416205A1 (en) | 2021-08-12 |
| CN113226386A (zh) | 2021-08-06 |
| JP7400145B1 (ja) | 2023-12-18 |
| JP2022511160A (ja) | 2022-01-31 |
| US20240108787A1 (en) | 2024-04-04 |
| JP2024010091A (ja) | 2024-01-23 |
| EP3902572A4 (en) | 2022-08-31 |
| KR20260010469A (ko) | 2026-01-20 |
| JP2022130517A (ja) | 2022-09-06 |
| SG11202106161PA (en) | 2021-07-29 |
| JP2023012540A (ja) | 2023-01-25 |
| JP7381692B2 (ja) | 2023-11-15 |
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