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    • 5. 发明授权
    • Purified Stat proteins and methods of purifying thereof
    • 纯化的Stat蛋白及其纯化方法
    • US07417120B2
    • 2008-08-26
    • US11335005
    • 2006-01-19
    • Uwe VinkemeierJames E. Darnell, Jr.
    • Uwe VinkemeierJames E. Darnell, Jr.
    • C07K1/00
    • B01J20/26B01D15/166B01D15/3804B01J20/262B01J20/265B01J20/285B01J20/3242C07K14/4702C07K14/4705C12N2799/026G01N33/6872G01N2333/4706G01N2500/02
    • The present invention describes methods of producing milligram quantities of three forms of purified Stat1 protein from recombinant DNA constructs. In addition, the Stat proteins may be isolated in their phosphorylated or nonphosphorylated forms (Tyr 701). The proteins can be produced in baculovirus infected insect cells, or E. coli. A compact domain in the amino terminus of Stat1α was isolated and found to enhance DNA binding due to its ability to interact with a neighboring Stat protein. A relatively protease-resistant recombinant truncated form of the Stat protein was isolated in 40-50 mg quantities. Purification of the Stat proteins were performed after modifying specific cysteine residues of the Stat proteins to prevent aggregation. Activated EGF-receptor partially purified from membranes by immunoprecipitation was shown to be capable of in vitro catalysis of the phosphorylation of the tyrosine residue of Stat1 known to be phosphorylated in vivo. Techniques are enclosed to separate the phosphorylated from the nonphosphorylated Stat proteins. The techniques disclosed are general for Stat proteins and may be used to isolate large quantities of purified Stat 2, 3, 4, 5A, 5B and 6. Methods for using purified Stat proteins, truncated Stat proteins, or Stat N-terminal fragments for drug discovery are also disclosed.
    • 本发明描述了从重组DNA构建体产生毫克量的三种形式的纯化的Stat1蛋白的方法。 此外,Stat蛋白可以以其磷酸化或非磷酸化形式(Tyr 701)分离。 蛋白质可以在杆状病毒感染的昆虫细胞或大肠杆菌中产生。 分离Stat1alpha氨基末端的紧密结构域,由于其与邻近Stat蛋白质相互作用的能力,发现DNA结合增强。 以40-50mg的量分离相对蛋白酶的重组截短形式的Stat蛋白。 Stat蛋白的纯化在Stat蛋白的特异性半胱氨酸残基修饰后进行,以防止聚集。 通过免疫沉淀从膜部分纯化的活化的EGF受体显示能够体外催化已知在体内被磷酸化的Stat1的酪氨酸残基的磷酸化。 封闭技术以将磷酸化的非磷酸化Stat蛋白分离。 所公开的技术对于Stat蛋白是普遍的,并且可以用于分离大量纯化的Stat2,3,4,5A,5B和6.使用纯化的Stat蛋白,截短的Stat蛋白或Stat N末端片段进行药物的方法 发现也被披露。
    • 6. 发明授权
    • Nucleic acids encoding receptor recognition factors, and methods of use thereof
    • 编码受体识别因子的核酸及其使用方法
    • US07339039B2
    • 2008-03-04
    • US09876773
    • 2001-06-07
    • James E. Darnell, Jr.Christian W. SchindlerXin-Yuan FuZilong WenZhong Zhong
    • James E. Darnell, Jr.Christian W. SchindlerXin-Yuan FuZilong WenZhong Zhong
    • C07H21/04C12P21/06C07K14/00
    • C12N15/113A61K38/21C07K14/4705Y02A50/473A61K2300/00
    • Receptor recognition factors exist that recognizes the specific cell receptor to which a specific ligand has been bound, and that may thereby signal and/or initiate the binding of the transcription factor to the DNA site. The receptor recognition factor is in one instance, a part of a transcription factor, and also may interact with other transcription factors to cause them to activate and travel to the nucleus for DNA binding. The receptor recognition factor appears to be second-messenger-independent in its activity, as overt perturbations in second messenger concentrations are of no effect. The concept of the invention is illustrated by the results of studies conducted With interferon (IFN)-stimulated gene transcription, and particularly, the activation caused by both IFNα and IFNγ. Specific DNA and amino acid sequences for various human and murine receptor recognition factors are provided, as are polypeptide fragments of two of the ISGF-3 genes, and antibodies have also been prepared and tested. The polypeptides confirm direct involvement of tyrosine kinase in intracellular message transmission. Numerous diagnostic and therapeutic materials and utilities are also disclosed.
    • 存在识别特异性配体已被结合的特异性细胞受体的受体识别因子,从而可以将转录因子与DNA位点的结合信号和/或启动。 受体识别因子在一个例子中是转录因子的一部分,并且还可以与其他转录因子相互作用,以使其激活并前往细胞核进行DNA结合。 受体识别因子似乎在其活动中是与第二信使无关的,因为第二信使浓度的明显的扰动是无效的。 通过用干扰素(IFN)刺激的基因转录,特别是由IFNα和IFNγ引起的活化的研究结果说明了本发明的概念。 提供了各种人和鼠受体识别因子的特异性DNA和氨基酸序列,两种ISGF-3基因的多肽片段也已经被制备和测试。 这些多肽证实了酪氨酸激酶在细胞内消息传播中的直接参与。 还公开了许多诊断和治疗材料和效用。
    • 7. 发明授权
    • Nucleic acids encoding receptor recognition factor stat 3 and methods of
use thereof
    • 编码受体识别因子stat 3的核酸及其使用方法
    • US6030808A
    • 2000-02-29
    • US956869
    • 1997-10-23
    • James E. Darnell, Jr.Christian W. SchindlerXin-Yuan FuZilong WenZhong Zhong
    • James E. Darnell, Jr.Christian W. SchindlerXin-Yuan FuZilong WenZhong Zhong
    • A61K38/00A61K38/21C07K14/47C07K16/28C12N15/113C12N15/12C12P21/08C12Q1/68G01N33/53G01N33/567C07H21/04C12N15/63
    • C12N15/113A61K38/21C07K14/4705
    • Receptor recognition factors exist that recognizes the specific cell receptor to which a specific ligand has been bound, and that may thereby signal and/or initiate the binding of the transcription factor to the DNA site. The receptor recognition factor is in one instance, a part of a transcription factor, and also may interact with other transcription factors to cause them to activate and travel to the nucleus for DNA binding. The receptor recognition factor appears to be second-messenger-independent in its activity, as overt perturbations in second messenger concentrations are of no effect. The concept of the invention is illustrated by the results of studies conducted with interferon (IFN)-stimulated gene transcription, and particularly, the activation caused by both IFN.alpha. and IFN-.gamma.. Specific DNA and amino acid sequences for various human and murine receptor recognition factors are provided, as are polypeptide fragments of two of the ISGF-3 genes, and antibodies have also been prepared and tested. The polypeptides confirm direct involvement of tyrosine kinase in intracellular message transmission. Numerous diagnostic and therapeutic materials and utilities are also disclosed.
    • 存在识别特异性配体已被结合的特异性细胞受体的受体识别因子,从而可以将转录因子与DNA位点的结合信号和/或启动。 受体识别因子在一个例子中是转录因子的一部分,并且还可以与其他转录因子相互作用,以使其激活并前往细胞核进行DNA结合。 受体识别因子似乎在其活动中是与第二信使无关的,因为第二信使浓度的明显的扰动是无效的。 通过用干扰素(IFN)刺激的基因转录进行的研究结果,特别是由IFNα和IFN-γ引起的活化来说明本发明的概念。 提供了各种人和鼠受体识别因子的特异性DNA和氨基酸序列,两种ISGF-3基因的多肽片段也已经被制备和测试。 这些多肽证实了酪氨酸激酶在细胞内消息传播中的直接参与。 还公开了许多诊断和治疗材料和效用。
    • 8. 发明授权
    • Methods of testing drugs or agents that modulate the activity of receptor recognition factors
    • 测试调节受体识别因子活性的药物或药剂的方法
    • US06605442B1
    • 2003-08-12
    • US08212185
    • 1994-03-11
    • James E. Darnell, Jr.Christian W. SchindlerXin-Yuan FuZilong WenZhong Zhong
    • James E. Darnell, Jr.Christian W. SchindlerXin-Yuan FuZilong WenZhong Zhong
    • G01N3353
    • C12N15/113A61K38/21C07K14/4705Y02A50/473A61K2300/00
    • Receptor recognition factors exist that recognizes the specific cell receptor to which a specific ligand has been bound, and that may thereby signal and/or initiate the binding of the transcription factor to the DNA site. The receptor recognition factor is in one instance, a part of a transcription factor, and also may interact with other transcription factors to cause them to activate and travel to the nucleus for DNA binding. The receptor recognition factor appears to be second-messenger-independent in its activity, as overt perturbations in second messenger concentrations are of no effect. The concept of the invention is illustrated by the results of studies conducted with interferon (IFN)-stimulated gene transcription, and particularly, the activation caused by both IFN&agr; and IFN&ggr;. Specific DNA and amino acid sequences for various human and murine receptor recognition factors are provided, as are polypeptide fragments of two of the ISGF-3 genes, and antibodies have also been prepared and tested. The polypeptides confirm direct involvement of tyrosine kinase in intracellular message transmission. Numerous diagnostic and therapeutic materials and utilities are also disclosed.
    • 存在识别特异性配体已被结合的特异性细胞受体的受体识别因子,从而可以将转录因子与DNA位点的结合信号和/或启动。 受体识别因子在一个例子中是转录因子的一部分,并且还可以与其他转录因子相互作用,以使其激活并前往细胞核进行DNA结合。 受体识别因子似乎在其活动中是与第二信使无关的,因为第二信使浓度的明显的扰动是无效的。 通过用干扰素(IFN)刺激的基因转录进行的研究结果,特别是由IFNα和IFNγ引起的活化来说明本发明的概念。 提供了各种人和鼠受体识别因子的特异性DNA和氨基酸序列,两种ISGF-3基因的多肽片段也已经被制备和测试。 这些多肽证实了酪氨酸激酶在细胞内消息传播中的直接参与。 还公开了许多诊断和治疗材料和效用。
    • 9. 发明授权
    • Nucleic acids encoding receptor recognition factors and methods of use
thereof
    • 编码受体识别因子的核酸及其使用方法
    • US6013475A
    • 2000-01-11
    • US956652
    • 1997-10-23
    • James E. Darnell, Jr.Christian W. SchindlerXin-Yuan FuZilong WenZhong Zhong
    • James E. Darnell, Jr.Christian W. SchindlerXin-Yuan FuZilong WenZhong Zhong
    • A61K38/00A61K38/21C07K14/47C07K16/28C12N15/113C12N15/12C12P21/08C12Q1/68G01N33/53G01N33/567
    • C12N15/113A61K38/21C07K14/4705
    • Receptor recognition factors exist that recognizes the specific cell receptor to which a specific ligand has been bound, and that may thereby signal and/or initiate the binding of the transcription factor to the DNA site. The receptor recognition factor is in one instance, a part of a transcription factor, and also may interact with other transcription factors to cause them to activate and travel to the nucleus for DNA binding. The receptor recognition factor appears to be second-messenger-independent in its activity, as overt perturbations in second messenger concentrations are of no effect. The concept of the invention is illustrated by the results of studies conducted with interferon (IFN)-stimulated gene transcription, and particularly, the activation caused by both IFN.alpha. and IFN.gamma.. Specific DNA and amino acid sequences for various human and murine receptor recognition factors are provided, as are polypeptide fragments of two of the ISGF-3 genes, and antibodies have also been prepared and tested. The polypeptides confirm direct involvement of tyrosine kinase in intracellular message transmission. Numerous diagnostic and therapeutic materials and utilities are also disclosed.
    • 存在识别特异性配体已被结合的特异性细胞受体的受体识别因子,从而可以将转录因子与DNA位点的结合信号和/或启动。 受体识别因子在一个例子中是转录因子的一部分,并且还可以与其他转录因子相互作用,以使其激活并前往细胞核进行DNA结合。 受体识别因子似乎在其活动中是与第二信使无关的,因为第二信使浓度的明显的扰动是无效的。 通过用干扰素(IFN)刺激的基因转录进行的研究结果,特别是由IFNα和IFNγ引起的活化来说明本发明的概念。 提供了各种人和鼠受体识别因子的特异性DNA和氨基酸序列,两种ISGF-3基因的多肽片段也已经被制备和测试。 这些多肽证实了酪氨酸激酶在细胞内消息传播中的直接参与。 还公开了许多诊断和治疗材料和效用。