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    • 3. 发明授权
    • Support for tissue regeneration and process for producing the same
    • 支持组织再生和生产过程
    • US07445793B2
    • 2008-11-04
    • US10527075
    • 2003-09-09
    • Hideo NiwaTakeshi FukuchiIchiro ShimizuMasao SatoAkiko NishiKenji YamashitaTadashi KanekoHajime OhgushiKoji HattoriKota Uematsu
    • Hideo NiwaTakeshi FukuchiIchiro ShimizuMasao SatoAkiko NishiKenji YamashitaTadashi KanekoHajime OhgushiKoji HattoriKota Uematsu
    • A61F2/02A61F2/00A61F2/28A61K9/14A61K48/00
    • A61L27/3895A61L27/3852A61L27/56A61L2430/06C12N5/0068C12N5/0655C12N2533/40
    • The present invention provides a scaffold in which cells can be stably retained and grafted in a uniform distribution state in the culture, preferable proliferation ability and viability can be secured, and particularly in the case of cartilage, fixation treatment such as suture can be carried out in the transplantation into affected parts after the culture, and the mechanical strength is provided sustainable for (weighted) compression at the initial stage of transplantation.The present invention relates to a 3-dimensional porous scaffold for tissue regeneration which comprises a structure composed of vertically long-shaped pores having a pore diameter of not less than 10 μm to not more than 500 μm and pore length of not less than 20 μm to not more than 1 cm being juxtaposedly arranged obtained by a production process comprising rapid freeze-drying as a key technology. Further, the invention relates to the above 3-dimensional porous scaffold in which seeding properties of cells are improved by a pore enlargement treatment of one side face by a separation operation, a salt elution operation of a surface part, or a combination of these operations. It becomes possible to produce a 3-dimensional cell combination having excellent degree of tissue formation and medical treatment effect by seeding a cell or precursor cell derived from a tissue in this scaffold, and culturing them in an artificial environment and/or the living body.
    • 本发明提供了一种支架,其中细胞可以在培养物中以均匀的分布状态稳定地保持和接枝,可以确保优选的增殖能力和活力,特别是在软骨的情况下,可以进行诸如缝合的定影处理 在培养后移植到受影响的部位,并且在移植的初始阶段提供可持续的(加权)压缩的机械强度。 本发明涉及用于组织再生的三维多孔支架,其包括由垂直长孔形成的结构,其孔径不小于10μm至不大于500μm,孔长度不小于20μm 通过包括快速冷冻干燥作为关键技术的生产方法并排布置而不超过1cm。 此外,本发明涉及上述三维多孔支架,其中通过分离操作,表面部分的盐洗脱操作或这些操作的组合,通过单侧面的孔扩大处理来提高细胞的接种性能 。 可以通过将来自该支架中的组织的细胞或前体细胞接种,并在人造环境和/或生物体中进行培养,来生产具有优异的组织形成程度和医疗效果的3维细胞组合。
    • 4. 发明申请
    • Support for tissue regeneration and process for producing the same
    • 支持组织再生和生产过程
    • US20060127368A1
    • 2006-06-15
    • US10527075
    • 2003-09-09
    • Hideo NiwaTakeshi FukuchiIchiro ShimizuMasao SatoAkiko NishiKenji YamashitaTadashi KanekoHajime OhgushiKoji HattoriKota Uematsu
    • Hideo NiwaTakeshi FukuchiIchiro ShimizuMasao SatoAkiko NishiKenji YamashitaTadashi KanekoHajime OhgushiKoji HattoriKota Uematsu
    • A61K35/12C12N5/00
    • A61L27/3895A61L27/3852A61L27/56A61L2430/06C12N5/0068C12N5/0655C12N2533/40
    • The present invention provides a scaffold in which cells can be stably retained and grafted in a uniform distribution state in the culture, preferable proliferation ability and viability can be secured, and particularly in the case of cartilage, fixation treatment such as suture can be carried out in the transplantation into affected parts after the culture, and the mechanical strength is provided sustainable for (weighted) compression at the initial stage of transplantation. The present invention relates to a 3-dimensional porous scaffold for tissue regeneration which comprises a structure composed of vertically long-shaped pores having a pore diameter of not less than 10 μm to not more than 500 μm and pore length of not less than 20 μm to not more than 1 cm being juxtaposedly arranged obtained by a production process comprising rapid freeze-drying as a key technology. Further, the invention relates to the above 3-dimensional porous scaffold in which seeding properties of cells are improved by a pore enlargement treatment of one side face by a separation operation, a salt elution operation of a surface part, or a combination of these operations. It becomes possible to produce a 3-dimensional cell combination having excellent degree of tissue formation and medical treatment effect by seeding a cell or precursor cell derived from a tissue in this scaffold, and culturing them in an artificial environment and/or the living body.
    • 本发明提供了一种支架,其中细胞可以在培养物中以均匀的分布状态稳定地保持和接枝,可以确保优选的增殖能力和活力,特别是在软骨的情况下,可以进行诸如缝合的定影处理 在培养后移植到受影响的部位,并且在移植的初始阶段提供可持续的(加权)压缩的机械强度。 本发明涉及用于组织再生的三维多孔支架,其包括由垂直长孔形成的结构,其孔径不小于10μm至不大于500μm,孔长度不小于20μm 通过包括快速冷冻干燥作为关键技术的生产方法并排布置而不超过1cm。 此外,本发明涉及上述三维多孔支架,其中通过分离操作,表面部分的盐洗脱操作或这些操作的组合,通过单侧面的孔扩大处理来提高细胞的接种性能 。 可以通过将来自该支架中的组织的细胞或前体细胞接种,并在人造环境和/或生物体中进行培养,来生产具有优异的组织形成程度和医疗效果的3维细胞组合。
    • 5. 发明授权
    • Lymphotoxin DNA, lymphotoxin expression vector
    • 淋巴毒素DNA,淋巴毒素表达载体
    • US4988624A
    • 1991-01-29
    • US882109
    • 1986-07-03
    • Tetsu KakutaniKenji Yamashitayasuhiro IkenakaHajime KawaharadaKiyoshi Watanabe
    • Tetsu KakutaniKenji Yamashitayasuhiro IkenakaHajime KawaharadaKiyoshi Watanabe
    • C07K14/525C12N15/19C12N15/85
    • C07K14/525C12N15/85
    • A chromosomal DNA sequence which codes for human lymphotoxin, a lymphotoxin expression vector which contains a DNA sequence wherein a chromosomal DNA sequence coding for human lymphotoxin and promoter region which functions in animal cell are linked together, lymphotoxin resistant cell line, transformed animal cell culture which is formed by transforming cultured animal cell with a lymphotoxin expression vector which contains a chromosomal DNA sequence coding for human lymphotoxin and, a process for preparing human lymphotoxin, which comprises transforming cultured animal cell with a lymphotoxin expression vector which contains a chromosomal DNA sequence coding for human lymphotoxin, culturing the transformed cell culture to produce human lymphotoxin, and collecting the human lymphotoxin.According to the present invention, LT which is expected for application as the antitumor agent can be produced effectively in a large amount.
    • 编码人淋巴毒素的染色体DNA序列,含有DNA序列的淋巴毒素表达载体,其中编码人类淋巴毒素的染色体DNA序列和在动物细胞中起作用的启动子区连接在一起,淋巴毒素抗性细胞系,转化的动物细胞培养物 是通过用含有编码人淋巴毒素的染色体DNA序列的淋巴毒素表达载体转化培养的动物细胞,以及制备人淋巴毒素的方法形成的,其包括用含有染色体DNA序列编码的淋巴毒素表达载体转化培养的动物细胞, 人淋巴毒素,培养转化的细胞培养物以产生人淋巴毒素,并收集人淋巴毒素。 根据本发明,可以有效地大量生产预期用作抗肿瘤剂的LT。
    • 8. 发明申请
    • Novel genes
    • 新基因
    • US20060057645A1
    • 2006-03-16
    • US10507876
    • 2003-03-06
    • Hideo NiwaKenji Yamashita
    • Hideo NiwaKenji Yamashita
    • G01N33/567C07H21/04C12N5/08C07K16/26
    • C12Q1/6883C07K14/47
    • The object of the present invention is to detect and select insulin-producing cells capable of proliferating, and further to differentiate/proliferate insulin-producing cells and precursory thereof, or cells related thereto. The present invention was made by finding three species of novel genes by detecting genes specifically expressed in pancreases of PHHI patients which are regarded as a model of spontaneous proliferation of pancreatic β cells, and searching for base sequence data bases. According to the present invention, proliferating insulin-producing cells can be detected using these genes, gene products or gene sequences by, for example, Northern analysis or RT-PCR. Furthermore, these genes can be differentiated into insulin-producing cells by introducing these genes into appropriate cells in genetic engineering manner.
    • 本发明的目的是检测和选择能够增殖的胰岛素生成细胞,并且进一步分化/增殖胰岛素产生细胞及其前体,或与其相关的细胞。 本发明是通过检测被认为是胰腺β细胞自发增殖的模型,以及寻找碱基序列数据库的PHHI患者胰腺特异性表达的基因来发现三种新型基因。 根据本发明,通过例如Northern分析或RT-PCR,可以使用这些基因,基因产物或基因序列检测增殖性胰岛素生成细胞。 此外,这些基因可以通过将这些基因以遗传工程方式引入合适的细胞中而分化成胰岛素生成细胞。
    • 10. 发明授权
    • Signal processing method and circuit to convert analog signal to digital signal
    • 信号处理方法和电路将模拟信号转换为数字信号
    • US08073091B2
    • 2011-12-06
    • US12320324
    • 2009-01-23
    • Kenji Yamashita
    • Kenji Yamashita
    • H04L7/04
    • H04N5/06G09G5/008H04N5/126
    • A phase determination unit in a signal processing circuit generates sampling clocks with different phases in a clock generator and sequentially provides them to an analog-to-digital convertor. Then, the phase determination unit obtains differences between each adjacent two signal levels in each sampled digital signal by use of the sampling clocks, and monitors a polarity change in the differences, extracts a more inappropriate phase for use in sampling from phases of the sampling clocks on the basis of the absolute values of the differences where the polarity change is detected, and determines an antiphase of the extracted phase as a phase of the sampling clock to be provided to the analog-to-digital convertor.
    • 信号处理电路中的相位确定单元在时钟发生器中产生具有不同相位的采样时钟,并将它们顺序地提供给模数转换器。 然后,相位确定单元通过使用采样时钟获得每个采样数字信号中每个相邻两个信号电平之间的差异,并且监视差异中的极性变化,从采样时钟的相位提取用于采样的更不合适的相位 基于检测到极性变化的差异的绝对值,并将所提取的相位的反相确定为要提供给模数转换器的采样时钟的相位。