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    • 83. 发明授权
    • Multifunctional polymeric tissue coatings
    • 多功能聚合物组织涂层
    • US07316845B2
    • 2008-01-08
    • US10804787
    • 2004-03-19
    • Jeffrey A. HubbellDonald L. ElbertCurtis B. Herbert
    • Jeffrey A. HubbellDonald L. ElbertCurtis B. Herbert
    • B32B15/04B32B17/06
    • C08G81/00A61K9/10A61K9/5031A61K9/5073A61K31/00A61K47/34A61L27/34A61L31/10B33Y80/00Y10T428/31504Y10T428/31678Y10T428/31725Y10T428/31855Y10T428/31971
    • Compositions for coating biological and non-biological surfaces, which minimize or prevent cell-cell contact and tissue adhesion, and methods of preparation and use thereof, are disclosed. Embodiments include polyethylene glycol/polylysine (PEG/PLL) block or comb-type copolymers with high molecular weight PLL (greater than 1000, more preferably greater than 100,000); PEG/PLL copolymers in which the PLL is a dendrimer which is attached to one end of the PEG; and multilayer compositions including alternating layers of polycationic and polyanionic materials. The multi-layer polymeric material is formed by the ionic interactions of a polycation and a polyanion. The molecular weights of the individual materials are selected such that the PEG portion of the copolymer inhibits cellular interactions, and the PLL portion adheres well to tissues. The compositions and methods are useful, for example, in inhibiting formation of post-surgical adhesions, protecting damaged blood vessels from thrombosis and restenosis, and decreasing the extent of metastasis of attachment-dependent tumor cells. The compositions and methods are also useful for coating non-biological surfaces such as metallic surfaces.
    • 公开了用于涂覆生物和非生物表面的组合物,其最小化或防止细胞 - 细胞接触和组织粘附,以及其制备和使用方法。 实施方案包括具有高分子量PLL(大于1000,更优选大于100,000)的聚乙二醇/聚赖氨酸(PEG / PLL)嵌段或梳型共聚物; PEG / PLL共聚物,其中PLL是连接到PEG的一端的树枝状大分子; 以及包括聚阳离子和聚阴离子材料的交替层的多层组合物。 多层聚合物材料通过聚阳离子和聚阴离子的离子相互作用形成。 选择各种材料的分子量使得共聚物的PEG部分抑制细胞相互作用,并且PLL部分粘附到组织上。 组合物和方法可用于例如抑制手术后粘连的形成,保护受损的血管免受血栓形成和再狭窄,以及降低附着依赖性肿瘤细胞的转移程度。 组合物和方法也可用于涂覆非生物表面如金属表面。
    • 88. 发明授权
    • Controlled release of non heparin-binding growth factors from heparin-containing matrices
    • 从含肝素的基质中控制非肝素结合生长因子的释放
    • US06723344B2
    • 2004-04-20
    • US09848664
    • 2001-05-03
    • Shelly E. Sakiyama-ElbertJeffrey A. Hubbell
    • Shelly E. Sakiyama-ElbertJeffrey A. Hubbell
    • A61K914
    • A61L27/20A61K47/62A61K47/6903A61L27/227A61L27/54A61L2300/25A61L2300/252A61L2300/414A61L2300/602
    • Matrices that support cell adhesion and growth are disclosed that deliver low heparin-binding affinity growth factor protein peptides in a controlled manner. These matrices comprise covalently or non-covalently bound heparin or heparin-like polymers, which serve to sequester the low heparin-binding affinity growth factor protein peptides within the matrix. The controlled release of some low heparin-binding affinity growth factor or peptides thereof occurs by degradation of some matrix component or dissociation of the low heparin-binding affinity growth factor protein peptides from the bound heparin. This differs from many controlled delivery devices in that release is not controlled solely by diffusion, and the rate of release may therefore be regulated by altering the rate of degradation of the matrix component or the amount of heparin bound within the matrix. The controlled release of such low heparin-binding affinity growth factor proteins such as NGF-&bgr;, NT-3 and BDNF, is demonstrated. The invention also identifies basic domains that can be utilized to identify other low heparin-binding affinity growth factor protein peptides useful in delivery as part of the matrices described herein.
    • 公开了以受控方式递送低肝素结合亲和力生长因子蛋白质肽的支持细胞粘附和生长的基质。 这些基质包括共价或非共价结合的肝素或肝素样聚合物,其用于螯合基质内的低肝素结合亲和力生长因子蛋白质肽。 一些低肝素结合亲和力生长因子或其肽的受控释放通过某些基质成分的降解或从结合肝素解离低肝素结合亲和力生长因子蛋白质肽而发生。 这与许多控制递送装置不同,因为释放不仅仅通过扩散控制,因此可以通过改变基质组分的降解速率或在基质内结合的肝素的量来调节释放速率。 证明了这种低肝素结合亲和力生长因子蛋白如NGF-β,NT-3和BDNF的受控释放。 本发明还鉴定了可用于鉴定作为本文所述的基质的一部分用于递送的其它低水平肝素结合亲和力生长因子蛋白质肽的基本结构域。
    • 90. 发明授权
    • Enzyme-mediated modification of fivrin for tissue engineering
    • 酶介导的组织工程纤维蛋白修饰
    • US06607740B1
    • 2003-08-19
    • US09695466
    • 2000-10-24
    • Jeffrey A. HubbellJason Schense
    • Jeffrey A. HubbellJason Schense
    • C12N910
    • A61L31/046A61F2310/00377A61L24/106A61L27/225A61L27/227C07K2319/00C12N5/0068C12N2533/56
    • The invention provides fibrin-based, biocompatible materials useful in promoting cell growth, wound healing, and tissue regeneration. These materials are provided as part of several cell and tissue scaffolding structures that provide particular application for use in wound-healing and tissue regenerating. Methods for preparing these compositions and using them are also disclosed as part of the invention. A variety of peptides may be used in conjunction with the practice of the invention, in particular, the peptide IKVAV, and variants thereof. Generally, the compositions may be described as comprising a protein network (e.g., fibrin) and a peptide having an amino acid sequence that comprises a transglutaminase substrate domain (e.g., a factor XIIIa substrate domain) and a bioactive factor (e.g., a peptide or protein, such as a polypeptide growth factor), the peptide being covalently bound to the protein network. Other applications of the technology include their use on implantable devices (e.g., vascular graphs), tissue and cell scaffolding. Other applications include use in surgical adhesive or sealant, as well as in peripheral nerve regeneration and angiogenesis.
    • 本发明提供了用于促进细胞生长,伤口愈合和组织再生的基于纤维蛋白的生物相容性材料。 提供这些材料作为几种细胞和组织脚手架结构的一部分,其提供用于伤口愈合和组织再生的特定应用。 制备这些组合物并使用它们的方法也作为本发明的一部分公开。 多种肽可以与本发明的实践结合使用,特别是肽IKVAV及其变体。 通常,组合物可以被描述为包括蛋白质网络(例如,纤维蛋白)和具有包含转谷氨酰胺酶底物结构域(例如,因子XIIIa底物结构域)和生物活性因子(例如肽或其衍生物)的氨基酸序列的肽 蛋白质,例如多肽生长因子),肽共价结合蛋白质网络。 该技术的其他应用包括它们在可植入装置(例如血管图),组织和细胞支架上的使用。 其他应用包括用于手术粘合剂或密封剂,以及在周围神经再生和血管生成中。