STENCIL PATTERNING METHODS AND APPARATUS FOR GENERATING HIGHLY UNIFORM STEM CELL COLONIES
    3.
    发明申请
    STENCIL PATTERNING METHODS AND APPARATUS FOR GENERATING HIGHLY UNIFORM STEM CELL COLONIES 审中-公开
    用于产生高度均匀干细胞群的STENCIL模式方法和装置

    公开(公告)号:US20130196435A1

    公开(公告)日:2013-08-01

    申请号:US13738210

    申请日:2013-01-10

    IPC分类号: C12M1/00 C12N5/071 C12N5/00

    摘要: A method for producing highly uniform cell colonies in a cell culture dish with the use of stencils made from an elastomeric sheet sized to fit within the cell culture dish, having a singular opening or a plurality of openings of a number, pitch and diameter configured to optimally control the geometric growth parameters of a cell colony. The uniform cell colonies are produced by placing the stencil in a cell culture dish and hydropilizing the stencil. The stencil is overlayed with cell culture media and seeded with seed cells that are preferably grown for at least a day before the stencil is removed to produce a pattern of seeded cells with controlled pitch, colony diameter and density within the culture dish that grow to become highly uniform cell colonies. A kit with culture dish, stencil, culture media and growth media is also provided.

    摘要翻译: 一种在细胞培养皿中产生高度均匀的细胞集落的方法,其使用由尺寸适合于细胞培养皿的弹性体片制成的模板,所述模板具有单个开口或多个开口或数个,间距和直径的开口,其被配置为 最佳地控制细胞集落的几何生长参数。 通过将模板放置在细胞培养皿中并将模板加水来制备均匀的细胞集落。 将模板覆盖在细胞培养基上并用种子细胞接种,种子细胞优选在去除模板之前至少一天生长以产生培养皿中培养皿内具有受控间距,菌落直径和密度的接种细胞的图案 高度统一的细胞集落。 还提供了包含培养皿,模板,培养基和成长培养基的试剂盒。

    BIOMIMETIC SCAFFOLDS
    6.
    发明申请
    BIOMIMETIC SCAFFOLDS 审中-公开
    生物系统

    公开(公告)号:US20160325013A1

    公开(公告)日:2016-11-10

    申请号:US14872699

    申请日:2015-10-01

    IPC分类号: A61L27/18 D01D5/00

    摘要: The invention provides a composition comprising a nanofiber polymer in which the fibers of the nanofiber polymer arc aligned, and a molecule is covalcntly attached, either directly or through a linker, to the nanofiber polymer. This molecule is capable of either covalently or non-covalently attaching to a member selected from an extracellular matrix component, a growth factor, and combinations thereof. The invention also provides methods of making the composition and methods of using the compositions to add new tissue to a subject, such as a human.

    摘要翻译: 本发明提供一种组合物,其包含纳米纤维聚合物,其中纳米纤维聚合物的纤维与直接或通过接头共价连接到纳米纤维聚合物上。 该分子能够共价或非共价连接至选自细胞外基质组分,生长因子及其组合的成员。 本发明还提供了使组合物和使用组合物向受试者(例如人)添加新组织的方法。

    CHEMICAL ENHANCEMENT BY NANOMATERIALS UNDER X-RAY IRRADIATION
    7.
    发明申请
    CHEMICAL ENHANCEMENT BY NANOMATERIALS UNDER X-RAY IRRADIATION 有权
    通过X射线辐射下的纳米材料的化学增强

    公开(公告)号:US20140371471A1

    公开(公告)日:2014-12-18

    申请号:US14370733

    申请日:2013-01-11

    发明人: Ting Guo

    IPC分类号: C07D311/12

    CPC分类号: C07D311/12

    摘要: A method for dynamic enhancement of chemical reactions by nanomaterials under hard X-ray irradiation. The nanomaterials were gold and platinum nanoparticles, and the chemical reaction employed was the hydroxylation of coumarin carboxylic acid. The reaction yield was enhanced 2000 times over that predicted on the basis of the absorption of X-rays only by the nanoparticles, and the enhancement was found for the first time to depend on the X-ray dose rate. The maximum turnover frequency was measured at 116×10-4 s-1 Gy-1. We call this process chemical enhancement, which is defined as the increased yield of a chemical reaction due to the chemical properties of the added materials. The chemical enhancement described here is believed to be ubiquitous and may significantly alter the outcome of chemical reactions under X-ray irradiation with the assistance of nanomaterials.

    摘要翻译: 一种在硬X射线照射下由纳米材料动态增强化学反应的方法。 纳米材料是金和铂纳米颗粒,所用的化学反应是香豆素羧酸的羟基化。 基于仅通过纳米颗粒吸收X射线而预测的反应产率增加了2000倍,并且首次发现增强取决于X射线剂量率。 最大周转频率为116×10-4 s-1 Gy-1。 我们称这种过程化学增强,其定义为由于所添加的材料的化学性质引起的化学反应的增加的产率。 这里描述的化学增强被认为是普遍存在的,并且可以在纳米材料的帮助下在X射线照射下显着改变化学反应的结果。

    Oligodendrocytes Derived from Human Embryonic Stem Cells for Remyelination and Treatment of Spinal Cord Injury

    公开(公告)号:US20200332254A1

    公开(公告)日:2020-10-22

    申请号:US16799548

    申请日:2020-02-24

    摘要: This invention provides populations of neural cells bearing markers of glial cells, such as oligodendrocytes and their precursors. The populations are generated by differentiating pluripotent stem cells such as human embryonic stem cells under conditions that promote enrichment of cells with the desired phenotype or functional capability. Various combinations of differentiation factors and mitogens can be used to produce cell populations bearing markers of oligodendrocyte precursor cells. Upon further differentiation form complex processes characteristic of mature oligodendrocytes. The cells are capable of forming myelin sheaths, and can be used therapeutically improve function of the central nervous system.