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    • 4. 发明申请
    • IMPROVED BONE MATRIX COMPOSITIONS AND METHODS
    • 改进骨基质组合物和方法
    • WO2005065396A2
    • 2005-07-21
    • PCT/US2004/043999
    • 2004-12-31
    • OSTEOTECH, INC.BEHNAM, Keyvan
    • BEHNAM, Keyvan
    • A61L27/22A61L27/36A61L27/54
    • A61K38/01A61L27/227A61L27/3608A61L27/365A61L27/3654A61L27/3683A61L27/3687A61L27/3847A61L27/3852A61L27/54A61L2300/254A61L2300/412A61L2300/432A61L2430/02A61L2430/06Y10S623/901
    • The present invention provides methods of improving the osteogenic and/or chondrogenic activity of a bone matrix, e.g., a dermineralized bone matrix (DBM), by exposing the bone matrix to one or more treatments or conditions. In preferred embodiments the bone matrix is derived from human bone. The treatment or condition may alter the structure of the bone matrix and/or cleave one or more specific proteins. Cleavage may generate peptides or protein fragments that have osteoinductive, osteogenic, or chondrogenic activity. Preferred treatments include collagenase and various other proteases. The invention further provides improved bone and cartilage matrix compositions that have been prepared according to the inventive methods and methods of treatment using the compositions. The invention further provides methods of preparing, testing, and using the improved bone matrix compositions. Ona assay comprises exposing relatively undifferentiated mesenchymal cells to a bone matrix composition and measuring expression of a marker characteristic of osteoblast or chondrocyte lineage(s). Increased expression of the marker relative to the level of the marker in cells that have been exposed to a control matrix (e.g., an inactivated or untreated matrix) indicates that the treatment or condition increased the osteogenic and/or chondrogenic activity of the bone matrix. Suitable cells include C2C12 cells. A suitable marker is alkaline phosphatase. The inventive methods increase the osteogenic and/or chondrogenic activity of human DBM when tested using this assay system.
    • 本发明提供通过将骨基质暴露于一种或多种治疗或病症来改善骨基质例如脱矿骨基质(DBM)的成骨和/或软骨形成活性的方法。 在优选实施方案中,骨基质衍生自人骨。 治疗或病症可改变骨基质的结构和/或切割一种或多种特异性蛋白质。 切割可能产生具有骨诱导,成骨或软骨形成活性的肽或蛋白质片段。 优选的治疗包括胶原酶和各种其它蛋白酶。 本发明还提供了根据本发明的方法和使用该组合物的治疗方法制备的改进的骨和软骨基质组合物。 本发明还提供了制备,测试和使用改进的骨基质组合物的方法。 Ona测定包括将相对未分化的间充质细胞暴露于骨基质组合物并测量成骨细胞或软骨细胞谱系特征性标志物的表达。 已经暴露于对照基质(例如,灭活或未经处理的基质)的细胞中标志物相对于标记物水平的增加表明该治疗或病症增加了骨基质的成骨和/或软骨形成的活性。 合适的细胞包括C2C12细胞。 合适的标记是碱性磷酸酶。 当使用该测定系统测试时,本发明的方法增加人DBM的成骨和/或软骨形成活性。
    • 8. 发明申请
    • TARGETS AND SCREENS FOR AGENTS USEFUL IN CONTROLLING PARASITIC NEMATODES
    • 用于控制PARASITIC NEMATODES的试剂的目标和筛选
    • WO2002074923A2
    • 2002-09-26
    • PCT/US2002/008336
    • 2002-03-20
    • CAMBRIA BIOSCIENCES
    • LIU, Leo, X.SLUDER, AnnPROVOST, ChrisLINDBLOM, TimothySUTHERLIN, Marie
    • C12N
    • G01N33/5308C07K14/4354C07K14/43545G01N33/5097G01N33/573G01N2500/10
    • The invention provides methods and reagents for identifying compounds that exhibit anti-nematode activity and compounds that potentiate the effects of other anti-nematode agents. The invention provides methods foridentifying modulators of nematode xenobiotic sensing nuclear receptors. The invention also provides methods for screening for anti-nematode compounds using sensitized nematode strains and further provides such sensitized strains. The invention further provides methods and screens for identifying new biological targets for anti-nematode compounds, e.g., for identifying nematode genes and proteins towards which anti-nematode compounds can be developed. The invention provides methods for controlling parasitic nematodes using compounds identified in the inventive screens. In addition, the invention provides sensitized nematode strains and methods for using such strains to enhance identification of compounds in the context of a wide variety of nematode model screening systems and strains.
    • 本发明提供用于鉴定显示抗线虫活性的化合物的方法和试剂,以及增强其它抗线虫剂效果的化合物。 本发明提供了鉴定线虫异生物感受核受体调节剂的方法。 本发明还提供了使用致敏线虫菌株筛选抗线虫化合物并进一步提供这种致敏菌株的方法。 本发明还提供用于鉴定抗线虫化合物的新生物靶标的方法和筛选,例如用于鉴定可以开发抗线虫化合物的线虫基因和蛋白质。 本发明提供了使用本发明筛选中鉴定的化合物来控制寄生线虫的方法。 此外,本发明提供致敏线虫菌株和使用这些菌株在多种线虫模型筛选系统和菌株的背景下增强化合物鉴定的方法。
    • 9. 发明申请
    • CELLULAR REPROGRAMMING IN PEPTIDE HYDROGEL AND USES THEREOF
    • 肽水解中的细胞重编码及其用途
    • WO2002062969A2
    • 2002-08-15
    • PCT/US2002/003607
    • 2002-02-06
    • MASSACHUSETTS INSTITUTE OF TECHNOLOGYSEMINO, Carlos, E.SHERLEY, JamesZHANG, Shuguang
    • SEMINO, Carlos, E.SHERLEY, JamesZHANG, Shuguang
    • C12N5/00
    • C12N5/0655A61K35/12C12N5/0012C12N5/0618C12N5/0672C12N2500/25C12N2501/11C12N2501/13C12N2502/1317C12N2533/30C12N2533/50
    • The present invention provides compositions featuring cells, e.g., progenitor cells, stem cells, and their progeny encapsulated within self-assembling three-dimensional peptide hydrogel structures (scaffolds). The scaffolds provide a nanoscale environment. Thus the invention provides a nanoscale environment scaffold encapsulating cells. According to certain embodiments of the invention the progenitor cells and/or their progeny are able to differentiate or transdifferentiate within the structures. According to certain embodiments of the invention the cells are liver lineage cells or neural lineage cells. The peptide hydrogel environment renders the cells permissive for instruction by differentiation-enhancing agents such as growth factors. The invention provides an in vitro culture system for growing stem and progenitor cells, for inducing their differentiation and transdifferentiation, and for studying their properties; an in vitro culture system for growing hepatocyte-like cells and/or mature hepatocytes, which may be used, for example, to propagate hepatotropic viruses; a system for controlling and manipulating cell differentiation and transdifferentiation in vitro, from which cells can be extracted and then either maintained in vitro or administered to a subject, e.g., for treating a tissue defect or other condition; a system for controlling and manipulating cell differentiation and transdifferentiation in vitro within a structure that is to be implanted within a subject, e.g., for treating a tissue defect or other condition, and assay systems for testing compounds.
    • 本发明提供了组合物,其特征在于,细胞,例如祖细胞,干细胞及其后代,其包封在自组装的三维肽水凝胶结构(支架)内。 支架提供了纳米尺度的环境。 因此,本发明提供了一种封装细胞的纳米级环境支架。 根据本发明的某些实施方案,祖细胞和/或其后代能够在结构内分化或转分化。 根据本发明的某些实施方案,细胞是肝谱系细胞或神经谱系细胞。 肽水凝胶环境使细胞允许通过分化增强剂如生长因子的指导。 本发明提供了用于培养干细胞和祖细胞,用于诱导其分化和转分化并用于研究其性质的体外培养系统。 用于生长肝细胞样细胞和/或成熟肝细胞的体外培养系统,其可以用于例如增殖嗜肝病毒; 用于控制和操纵体外细胞分化和转分化的系统,从中可以提取细胞,然后在体外保持或施用于受试者,例如用于治疗组织缺陷或其他病症; 用于在待植入受试者的结构内(例如用于治疗组织缺陷或其他病症)和用于测试化合物的测定系统的体外控制和操纵细胞分化和转分化的系统。
    • 10. 发明申请
    • REAGENTS, METHODS, AND LIBRARIES FOR BEAD-BASED SQUENCING
    • WO2006084132A3
    • 2006-08-10
    • PCT/US2006/003845
    • 2006-02-01
    • AGENCOURT BIOSCIENCE CORP.MCKERNAN, KevinBLANCHARD, AlanKOTLER,LevCOSTA, Gina
    • MCKERNAN, KevinBLANCHARD, AlanKOTLER,LevCOSTA, Gina
    • C12Q1/68
    • The present invention provides methods for determining a nucleic acid sequence by performing successive cycles of duplex extension along a single stranded template. The cycles comprise steps of extension, ligation, and, preferably, cleavage. In certain embodiments the methods make use of extension probes containing phosphorothiolate linkages and employ agents appropriate to cleave such linkages. In certain embodiments the methods make use of extension probes containing an abasic residue or a damaged base and employ agents appropriate to cleave linkages between a nucleoside and an abasic residue and/or agents appropriate to remove a damaged base from a nucleic acid. The invention provides methods of determining information about a sequence using at least two distinguishably labeled probe families. In certain embodiments the methods acquire less than 2 bits of information from each of a plurality of nucleotides in the template in each cycle. In certain embodiments the sequencing reactions are performed on templates attached to beads, which are immobilized in or on a semi-solid support. The invention further provides sets of labeled extension probes containing phosphorothiolate linkages or trigger residues that are suitable for use in the method. In addition, the invention includes performing multiple sequencing reactions on a single template by removing initializing oligonucleotides and extended strands and performing subsequent reactions using different initializing oligonucleotides. The invention further provides efficient methods for preparing templates, particularly for performing sequencing multiple different templates in parallel. The invention also provides methods for performing ligation and cleavage. The invention also provides new libraries of nucleic acid fragments containing paired tags, and methods of preparing microparticles having multiple different templates (e.g., containing paired tags) attached thereto and of sequencing the templates individually. The invention also provides automated sequencing systems, flow cells, image processing methods, and computer-readable media that store computer-executable instructions (e.g., to perform the image-processing methods) and/or sequence information. In certain embodiments the sequence information is stored in a database.