Covalently immobilized protein gradients in three-dimensional porous scaffolds
    4.
    发明申请
    Covalently immobilized protein gradients in three-dimensional porous scaffolds 有权
    在三维多孔支架中共价固定的蛋白质梯度

    公开(公告)号:US20070212730A1

    公开(公告)日:2007-09-13

    申请号:US11407373

    申请日:2006-04-19

    IPC分类号: G01N33/53 C12M1/34

    摘要: The invention provides a method for forming an immobilized agent gradient within a 3-dimensional porous scaffold. A 3-dimensional scaffold formed from a biocompatible material is provided. The surface of the scaffold and/ or the agent is activated so as to allow binding of the agent to the scaffold. The activated scaffold is contacted with a solution containing the agent. Contact with the solution is maintained for a sufficient period of time to allow diffusion of the solution through a portion of the scaffold, thereby forming a desired gradient of the agent through the 3-dimensional scaffold.

    摘要翻译: 本发明提供了在三维多孔支架内形成固定化剂梯度的方法。 提供由生物相容性材料形成的3维支架。 支架和/或试剂的表面被活化,以允许试剂与支架结合。 活化的支架与含有该试剂的溶液接触。 保持与溶液接触足够的时间以允许溶液扩散通过支架的一部分,从而通过3维支架形成所需试剂的梯度。

    SYSTEM AND METHOD FOR MAKING BIOMATERIAL STRUCTURES
    7.
    发明申请
    SYSTEM AND METHOD FOR MAKING BIOMATERIAL STRUCTURES 有权
    制备生物体结构的系统和方法

    公开(公告)号:US20110076384A1

    公开(公告)日:2011-03-31

    申请号:US12934666

    申请日:2009-04-08

    IPC分类号: B05C11/00 A61L33/00

    摘要: A system and method for making a biomaterial device includes a support structure providing a shape for a biomaterial device. At least one applicator has a supply of biomaterial solution and is positioned along the support structure. The at least one applicator forms a biomaterial fiber by applying shear force to the biomaterial solution and delivering the biomaterial fiber to the support structure. A controller causes relative movement between the support structure and the at least one applicator, and the biomaterial fiber is arranged on the support structure according to the relative movement to form the biomaterial device. The biomaterial may be silk fibroin which may be wound onto a reciprocating and rotating mandrel. Control over the properties of the biomaterial device is achieved through appropriate selection of material processing, winding strategy, and post-winding processing.

    摘要翻译: 用于制造生物材料装置的系统和方法包括为生物材料装置提供形状的支撑结构。 至少一个施用器具有生物材料溶液的供应并且沿着支撑结构定位。 所述至少一个施用器通过向所述生物材料溶液施加剪切力并将所述生物材料纤维递送到所述支撑结构来形成生物材料纤维。 控制器引起支撑结构和至少一个施加器之间的相对运动,并且根据相对运动将生物材料纤维布置在支撑结构上以形成生物材料装置。 生物材料可以是可以卷绕到往复和旋转的心轴上的丝素蛋白。 通过适当选择材料加工,卷绕策略和后卷绕处理,可以控制生物材料装置的性能。

    Method for the treatment of diseased, degenerated, or damaged tissue using three dimensional tissue produced in vitro in combination with tissue cells and/or exogenic factors
    8.
    发明申请
    Method for the treatment of diseased, degenerated, or damaged tissue using three dimensional tissue produced in vitro in combination with tissue cells and/or exogenic factors 审中-公开
    使用体外结合组织细胞和/或外源因子产生的三维组织治疗患病,退化或损伤的组织的方法

    公开(公告)号:US20050074477A1

    公开(公告)日:2005-04-07

    申请号:US10501520

    申请日:2003-11-07

    摘要: The invention relates to a tissue replacement structure comprising (a) a preformed three-dimensional tissue which can be produced by obtaining cells from a human or animal organism and culturing them in a stationary fashion as a suspension culture in cell culture vessels with hydrophobic surface and tapering bottom until a cell aggregate is formed which has differentiated cells embedded therein and has an outer region wherein cells capable of proliferation and migration are present; (b) (i) an autologous cell suspension which can be produced from endogenous cells, with endogenous serum being added, with no addition of growth-promoting compounds, (ii) implants or support materials and/or (iii) growth factors; and/or (c) can be obtained by exposure of the tissue according to (a) to electromagnetic fields, mechanical stimulation and/or ultrasound.

    摘要翻译: 本发明涉及一种组织置换结构,其包括(a)预先形成的三维组织,其可以通过从人或动物生物获得细胞并以静止方式将其作为悬浮培养物在具有疏水性表面的细胞培养容器中培养而制备, 逐渐变细的底部,直到形成细胞聚集体,其具有嵌入其中的分化细胞,并且具有其中存在能够增殖和迁移的细胞的外部区域; (b)(i)可以从内源细胞产生的自体细胞悬浮液,加入内源血清,不加生长促进化合物,(ii)植入物或支持材料和/或(iii)生长因子; 和/或(c)可以通过根据(a)将组织暴露于电磁场,机械刺激和/或超声波来获得。

    Application of electrical stimulation for functional tissue engineering in vitro and in vivo
    10.
    发明授权
    Application of electrical stimulation for functional tissue engineering in vitro and in vivo 有权
    电刺激在体外和体内功能组织工程中的应用

    公开(公告)号:US08367410B2

    公开(公告)日:2013-02-05

    申请号:US10872577

    申请日:2004-06-21

    IPC分类号: C12N5/00 C12N5/02 C12N5/07

    摘要: The present invention provides new methods for the in vitro preparation of bioartificial tissue equivalents and their enhanced integration after implantation in vivo. These methods include submitting a tissue construct to a biomimetic electrical stimulation during cultivation in vitro to improve its structural and functional properties, and/or in vivo, after implantation of the construct, to enhance its integration with host tissue and increase cell survival and functionality. The inventive methods are particularly useful for the production of bioartificial equivalents and/or the repair and replacement of native tissues that contain electrically excitable cells and are subject to electrical stimulation in vivo, such as, for example, cardiac muscle tissue, striated skeletal muscle tissue, smooth muscle tissue, bone, vasculature, and nerve tissue.

    摘要翻译: 本发明提供了体外制备生物人造组织当量的新方法及其在体内植入后的增强整合。 这些方法包括在体外培养过程中将组织构建物递送至仿生电刺激,以改善其结构和功能性质,和/或在植入该构建体后体内,以增强其与宿主组织的整合并增加细胞存活和功能。 本发明的方法特别可用于生产生物人造等同物和/或修复和替换含有电可兴奋细胞的天然组织,并且在体内受到电刺激,例如心肌组织,条纹骨骼肌组织 ,平滑肌肉组织,骨骼,脉管系统和神经组织。