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    • 2. 发明授权
    • Cloning and expression of a novel acetylcholine-gated ion channel receptor subunit
    • 新型乙酰胆碱门控离子通道受体亚基的克隆和表达
    • US06646109B1
    • 2003-11-11
    • US09345109
    • 1999-06-29
    • Ana Belen ElgoyhenDavid S. JohnsonJames Richard BoulterStephen Fox Heinemann
    • Ana Belen ElgoyhenDavid S. JohnsonJames Richard BoulterStephen Fox Heinemann
    • C07K1628
    • C07K14/70571A01K2217/05
    • The present invention provides isolated nucleic acids encoding alpha9 nicotinic acetylcholine receptor subunit and receptor subunit protein encoded thereby. Also provided are vectors containing the invention nucleic acids, host cells transformed therewith, alpha9 nicotinic acetylcholine receptor subunit and functional nicotinic acetylcholine receptors comprising at least one alpha9 subunit expressed recombinantly in such host cells as well as transgenic non-human mammals that express the invention receptor subunit and mutants thereof. Receptors of the invention comprise at least one alpha9 nicotinic acetylcholine subunit and form cationic channels activated by acetylcholine, but blocked by nicotine and muscarine. The invention also provides methods for identifying compounds that modulate the ion channel activity of the functional invention receptors containing at least one invention subunit.
    • 本发明提供编码α9烟碱型乙酰胆碱受体亚基的分离核酸和由此编码的受体亚基蛋白。 还提供了含有本发明的核酸,其转化的宿主细胞,α9烟碱乙酰胆碱受体亚基和功能性烟碱乙酰胆碱受体的载体,其包含在这种宿主细胞中重组表达的至少一个α9亚基以及表达本发明受体的转基因非人哺乳动物 亚单位及其突变体。 本发明的受体包含至少一个α9烟碱乙酰胆碱亚基,并形成由乙酰胆碱活化但由尼古丁和毒蕈碱胺阻断的阳离子通道。 本发明还提供了用于鉴定调节含有至少一个本发明亚单位的功能性受体的离子通道活性的化合物的方法。
    • 10. 发明授权
    • Antibodies to the cytoplasmic domain of the thrombopoietin receptor
    • 血小板生成素受体的细胞质结构域的抗体
    • US06696549B1
    • 2004-02-24
    • US09652037
    • 2000-08-31
    • Jerry SpivakAlison Moliterno
    • Jerry SpivakAlison Moliterno
    • C07K1628
    • G01N33/80G01N33/5091G01N33/56966G01N33/57484G01N2333/91205
    • Impaired TPO-mediated platelet protein tyrosine phosphorylation was consistently observed in patients with polycythemia vera (PV) as well as those with idiopathic myelofibrosis (IMF), in contrast to patients with essential thrombocytosis, chronic myelogenous leukemia, secondary erythrocytosis, iron deficiency anemia, hemochromatosis or normal volunteers. Moreover, the platelet TPO receptor, Mpl, was not detectable by immunoblotting with an antibody to the extracellular domain, by chemical crosslinking of TPO to the surface of platelets, or by flow cytometry using an antibody to the extracellular domain, in 34 of 34 PV patients and also in 13 of 14 IMF patients. Impaired TPO-induced protein tyrosine phosphorylation in PV and IMF platelets was uniformly associated with markedly reduced or absent expression of the extracellular domain of Mpl. Thus the reduced detectablility of Mpl by these methods can be used a marker of PV and IMF. The abnormality appears to distinguish PV from other forms of erythrocytosis and may be involved in the platelet function defect associated with PV.
    • 与患有原发性血小板增多症,慢性骨髓性白血病,继发性红细胞增多症,缺铁性贫血,血色素沉着症的患者相比,真性红细胞增多症(PV)患者以及特发性骨髓纤维化(IMF)患者一致观察到TPO介导的血小板蛋白酪氨酸磷酸化受损 或正常志愿者。 此外,血小板TPO受体Mpl不能通过用细胞外结构域的抗体进行免疫印迹,通过TPO与血小板表面的化学交联,或者通过流式细胞术,使用34个PV中的34个中的34个 患者以及14名IMF患者中的13名。 在PV和IMF血小板中受损的TPO诱导的蛋白酪氨酸磷酸化与Mpl细胞外结构域的显着降低或缺失表达均匀相关。 因此,通过这些方法降低Mpl的可检测性可以用于PV和IMF的标记。 异常似乎将PV与其他形式的红细胞增多症区分开来,并且可能参与与PV相关的血小板功能缺陷。