Methods and apparatus for selective, oxidative patterning of a surface
    1.
    发明授权
    Methods and apparatus for selective, oxidative patterning of a surface 有权
    用于表面选择性,氧化图案化的方法和装置

    公开(公告)号:US08119335B2

    公开(公告)日:2012-02-21

    申请号:US11333090

    申请日:2006-01-17

    IPC分类号: C08F2/54 C08F2/48 G03F7/00

    摘要: The present invention provides methods and apparatus for selectively patterning surfaces using radical species generated with a photocatalyst. The photocatalyst may comprise a photocatalytic semiconductor or a photosensitizer. The radical species are brought into contact with an oxidizable coating disposed on the surface, thereby locally oxidizing and selectively patterning the surface. The photocatalyst is preferably disposed on a delivery device, such as a stamp, mask, or scanning probe, that is brought into close proximity or contact with the coated surface. The photocatalyst is then excited in a manner capable of generating radical species, for example, oxygen-containing radical species, in appropriate media. It is expected that these radical species will be transferred to the coated surface along a substantially shortest distance path, thereby locally oxidizing and patterning the surface.

    摘要翻译: 本发明提供了使用由光催化剂生成的自由基物质来选择性地图案化表面的方法和装置。 光催化剂可以包含光催化半导体或光敏剂。 使自由基物质与设置在表面上的可氧化涂层接触,从而局部氧化并选择性地图案化该表面。 光催化剂优选地设置在与涂覆表面紧密接触或接触的输送装置,例如印模,掩模或扫描探针上。 然后在适当的介质中以能够产生自由基物质,例如含氧自由基物质的方式激发光催化剂。 预期这些自由基物质将沿着基本上最短的距离路径转移到涂覆的表面,从而局部氧化和图案化表面。

    Coating hydrophobic surfaces with amphiphilic thioethers to reduce protein adsorption and cell adhesion
    2.
    发明授权
    Coating hydrophobic surfaces with amphiphilic thioethers to reduce protein adsorption and cell adhesion 有权
    用两亲性硫醚涂覆疏水表面以减少蛋白质吸附和细胞粘附

    公开(公告)号:US07427410B2

    公开(公告)日:2008-09-23

    申请号:US10246362

    申请日:2002-09-18

    IPC分类号: A61F2/00 A61K38/43 C12N11/08

    CPC分类号: A61L27/34 C08L81/02

    摘要: The present invention provides methods and apparatus for coating surfaces with specially designed thioethers and amphiphilic thioethers that reduce protein adsorption and/or cell adhesion. This reduction may be achieved, for example, by controlling the spacing or length of pendant chains or hydrophilic blocks in an amphiphilic thioether. Techniques for determining spacing include adsorbing the thioether from a solution or a colloidal suspension, or controlling the degree of polymerization of the thioether. Techniques for controlling the length of the pendant chains include controlling the degree of polymerization of the pendant chains. Multiblock copolymers of poly(propylene sulfide) and poly(ethylene glycol) (“PPS-PEG”) represent an exemplary family of amphiphilic thioethers. Methods for coating surfaces with amphiphilic thioethers are also provided.

    摘要翻译: 本发明提供了用特别设计的硫醚和两亲性硫醚涂覆表面的方法和设备,其减少蛋白质吸附和/或细胞粘附。 该还原可以通过例如通过控制两亲性硫醚中的侧链或亲水嵌段的间隔或长度来实现。 用于确定间隔的技术包括从溶液或胶体悬浮液中吸附硫醚,或控制硫醚的聚合度。 用于控制侧链长度的技术包括控制侧链的聚合度。 聚(丙烯硫醚)和聚(乙二醇)(“PPS-PEG”)的多嵌段共聚物代表两亲性硫醚的典型族。 还提供了用两亲硫醚涂覆表面的方法。

    GELS FOR ENCAPSULATION OF BIOLOGICAL MATERIALS
    7.
    发明申请
    GELS FOR ENCAPSULATION OF BIOLOGICAL MATERIALS 审中-公开
    凝胶生物材料的凝胶

    公开(公告)号:US20080274201A1

    公开(公告)日:2008-11-06

    申请号:US12172063

    申请日:2008-07-11

    摘要: This invention provides novel methods for the formation of biocompatible membranes around biological materials using photopolymerization of water soluble molecules. The membranes can be used as a covering to encapsulate biological materials or biomedical devices, as a “glue” to cause more than one biological substance to adhere together, or as carriers for biologically active species. Several methods for forming these membranes are provided. Each of these methods utilizes a polymerization system containing water-soluble macromers, species, which are at once polymers and macromolecules capable of further polymerization. The macromers are polymerized using a photoinitiator (such as a dye), optionally a cocatalyst, optionally an accelerator, and radiation in the form of visible or long wavelength UV light. The reaction occurs either by suspension polymerization or by interfacial polymerization. The polymer membrane can be formed directly on the surface of the biological material, or it can be formed on material, which is already encapsulated.

    摘要翻译: 本发明提供了使用水溶性分子的光聚合在生物材料周围形成生物相容性膜的新方法。 该膜可以用作包封生物材料或生物医学装置的覆盖物,作为使胶粘剂引起不止一种生物物质粘附在一起,或作为生物活性物质的载体。 提供了形成这些膜的几种方法。 这些方法中的每一种都使用含有水溶性大分子单体的聚合体系,它们是能够进一步聚合的聚合物和大分子。 大分子单体使用光引发剂(例如染料),任选的助催化剂,任选的促进剂和可见或长波长UV光的形式的辐射聚合。 该反应通过悬浮聚合或通过界面聚合进行。 聚合物膜可以直接形成在生物材料的表面上,或者可以在已经被包封的材料上形成。

    Growth factor modified protein matrices for tissue engineering
    8.
    发明授权
    Growth factor modified protein matrices for tissue engineering 有权
    用于组织工程的生长因子修饰蛋白质基质

    公开(公告)号:US07247609B2

    公开(公告)日:2007-07-24

    申请号:US10325021

    申请日:2002-12-18

    IPC分类号: A01N37/18

    摘要: Proteins are incorporated into protein or polysaccharide matrices for use in tissue repair, regeneration and/or remodeling and/or drug delivery. The proteins can be incorporated so that they are released by degradation of the matrix, by enzymatic action and/or diffusion. As demonstrated by the examples, one method is to bind heparin to the matrix by either covalent or non-covalent methods, to form a heparin-matrix. The heparin then non-covalently binds heparin-binding growth factors to the protein matrix. Alternatively, a fusion protein can be constructed which contains a crosslinking region such as a factor XIIIa substrate and the native protein sequence. Incorporation of degradable linkages between the matrix and the bioactive factors can be particularly useful when long-term drug delivery is desired, for example in the case of nerve regeneration, where it is desirable to vary the rate of drug release spatially as a function of regeneration, e.g. rapidly near the living tissue interface and more slowly farther into the injury zone. Additional benefits include the lower total drug dose within the delivery system, and spatial regulation of release which permits a greater percentage of the drug to be released at the time of greatest cellular activity.

    摘要翻译: 将蛋白质掺入用于组织修复,再生和/或重塑和/或药物递送的蛋白质或多糖基质中。 可以掺入蛋白质,使其通过降解基质,通过酶作用和/或扩散来释放。 如实施例所示,一种方法是通过共价或非共价方法将肝素与基质结合,形成肝素基质。 然后肝素将肝素结合生长因子非共价结合到蛋白质基质上。 或者,可以构建融合蛋白,其包含交联区域,例如因子XIIIa底物和天然蛋白质序列。 当需要长期药物递送时,例如在神经再生的情况下,在基质和生物活性因子之间引入可降解的键可能是特别有用的,其中期望在空间上改变作为再生的功能的药物释放速率 ,例如 快速靠近生物组织界面,并进一步向进入损伤区更慢。 额外的益处包括递送系统内的总药物剂量越少,释放的空间调节,允许在最大的细胞活动时释放更多百分比的药物。

    Enzyme-mediated modification of fibrin for tissue engineering: incorporation of proteins
    9.
    发明授权
    Enzyme-mediated modification of fibrin for tissue engineering: incorporation of proteins 有权
    酶介导的纤维蛋白修饰组织工程:掺入蛋白质

    公开(公告)号:US06960452B2

    公开(公告)日:2005-11-01

    申请号:US09798338

    申请日:2001-03-02

    CPC分类号: C07K14/475

    摘要: Disclosed are materials that may be used in the design of improved devices and wound treatment platforms though covalent and/or non-covalent attachment of bioactive proteins. The proteins comprise any variety of cell growth and/or healing promoting proteins, such as growth factor. The incorporation of these whole proteins may be designed to provide controlled release thereof in a biological system through further use of enzyme degradation sites. Heparin-binding protein or fusion proteins synthesized to contain a heparin-binding domain are two mechanisms that may be used in providing these properties to a matrix, such as a fibrinogen matrix. The proteins will be used to provide enhanced healing in various tissues including vasculature, skin, nerve, and liver. The materials disclosed will be used to enhance would?? Healing and other generative processes by engineering the fibrin gel to contain appropriate proteins with specifically designed release and/or degradation characteristics.

    摘要翻译: 公开了可以用于设计改进的装置和伤口治疗平台的材料,尽管共价和/或非共价连接生物活性蛋白质。 蛋白质包括任何多种细胞生长和/或愈合促进蛋白质,例如生长因子。 可以将这些全蛋白的掺入设计成通过进一步使用酶降解位点来提供其在生物系统中的受控释放。 合成含有肝素结合结构域的肝素结合蛋白或融合蛋白是可用于向基质例如纤维蛋白原基质提供这些性质的两种机制。 蛋白质将用于在各种组织中提供增强的愈合,包括脉管系统,皮肤,神经和肝脏。 所披露的材料将被用来增强 通过设计纤维蛋白凝胶来包含具有专门设计的释放和/或降解特性的合适蛋白质来治疗和其他生成过程。

    Growth factor modified protein matrices for tissue engineering
    10.
    发明授权
    Growth factor modified protein matrices for tissue engineering 有权
    用于组织工程的生长因子修饰蛋白质基质

    公开(公告)号:US06894022B1

    公开(公告)日:2005-05-17

    申请号:US09563760

    申请日:2000-05-01

    IPC分类号: C07K14/475 A61K31/727

    CPC分类号: C07K14/475

    摘要: Proteins are incorporated into protein or polysaccharide matrices for use in tissue repair, regeneration and/or remodeling, and/or drug delivery. The proteins can be incorporated so that they are released by degradation of the matrix, enzymatic action, and/or diffusion. In one embodiment, a fusion protein, which contains a crosslinking region, such as a factor XIIIa substrate, and a native protein sequence, such as a bioactive factor, is constructed. Degradable linkages may be included between the crosslinking region and the bioactive factor.

    摘要翻译: 将蛋白质掺入用于组织修复,再生和/或重塑和/或药物递送的蛋白质或多糖基质中。 可以掺入蛋白质,使其通过降解基质,酶作用和/或扩散而释放。 在一个实施方案中,构建了含有交联区域(例如因子XIIIa底物)和天然蛋白质序列(例如生物活性因子)的融合蛋白质。 交联区域和生物活性因子之间可以包括可降解的连接。