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    • 3. 发明授权
    • Methods and compositions for the preparation and use of a herpes protease
    • 用于制备和使用疱疹蛋白酶的方法和组合物
    • US06410704B1
    • 2002-06-25
    • US08176320
    • 1994-01-03
    • Bernard RoizmanFenyong Liu
    • Bernard RoizmanFenyong Liu
    • C07H2104
    • C12N15/1133A61K38/00C07K14/005C07K16/085C12N9/503C12N15/86C12N2710/16622C12N2710/16643C12Q1/705Y10S435/815
    • The present invention relates to the identification and purification of a herpes protease and a nucleic acid segment coding for two proteins. The first protein is the herpes protease which is able to cleave itself and also cleave the second protein. This protease is required for the assembly of the herpes virus capsid, therefore is essential for replication. The second protein has previously been designated as the family of proteins in viral infected cells, ICP35. The protease and its substrates are encoded by overlapping nucleic acid segments. This invention also relates to a promoter sequence for the second protein. Methods are presented of producing a viral protease, screening a protease inhibitor which may be used in a drug designed for the treatment of herpes disease, methods for treating herpes and other viral infections wherein the virus employs a protease substantially similar to the herpes protease, for capsid production. Methods for detecting herpes infections and other viral infections are also disclosed.
    • 本发明涉及鉴定和纯化疱疹蛋白酶和编码两种蛋白质的核酸片段。 第一种蛋白质是能够切割自身并且还切割第二种蛋白质的疱疹蛋白酶。 这种蛋白酶是组装疱疹病毒衣壳所必需的,因此是复制所必需的。 之前已经将第二种蛋白质命名为病毒感染细胞中的蛋白质家族,ICP35。 蛋白酶及其底物通过重叠的核酸片段编码。 本发明还涉及第二种蛋白质的启动子序列。 提供了产生病毒蛋白酶的方法,筛选可用于治疗疱疹病毒的药物中的蛋白酶抑制剂,治疗疱疹和其它病毒感染的方法,其中病毒采用基本上类似于疱疹蛋白酶的蛋白酶,用于 衣壳生产。 还公开了检测疱疹感染和其他病毒感染的方法。
    • 4. 发明授权
    • Targeted cleavage of RNA using ribonuclease P targeting and cleavage
sequences
    • 使用核糖核酸酶P靶向和切割序列靶向裂解RNA
    • US5869248A
    • 1999-02-09
    • US702652
    • 1996-11-06
    • Yan YuanCecilia Guerrier-TakadaSidney AltmanFenyong Liu
    • Yan YuanCecilia Guerrier-TakadaSidney AltmanFenyong Liu
    • C12N15/09A61K9/127A61K31/70A61K35/76A61K38/00A61K47/48A61K48/00A61P31/12A61P35/02C07H21/02C07H21/04C12N9/22C12N15/113C12Q1/68
    • C12N15/113A61K47/48776C12Q1/6813C12Q1/6827C12Q1/6848A61K38/00C12N2310/111C12N2310/126C12N2799/027
    • It has been discovered that any RNA can be targeted for cleavage by RNase P from prokaryotic or eukaryotic cells using a suitably designed oligonucleotide ("external guide sequence", or EGS) to form a hybrid with the target RNA, thereby creating a substrate for cleavage by RNase P in vitro. The EGS hydrogen bonds to the targeted RNA to form a partial tRNA like structure including the aminoacyl acceptor stem, the T stem and loop, and part of the D stem. An EGS can be modified both by changes in sequence and by chemical modifications to the nucleotides. The EGS can be a separate molecule or can be combined with an RNase P catalytic RNA sequence to form a single oligonucleotide molecule ("RNase P internal guide sequence" or RIGS). Methods are also disclosed to randomly select and to express a suitable EGS or RIGS in vivo to make a selected RNA a target for cleavage by a host cell RNase P or introduced RIGS, thus preventing expression of the function of the target RNA. The methods and compositions should be useful to prevent the expression of disease- or disorder-causing genes in vivo.
    • PCT No.PCT / US95 / 02816 Sec。 371日期:1996年11月6日 102(e)日期1996年11月6日PCT 1994年3月7日PCT公布。 公开号WO95 / 24489 日期1995年9月14日已经发现任何RNA可以使用合适设计的寡核苷酸(“外部引导序列”或EGS)从原核或真核细胞中靶向用RNA酶P切割以与靶RNA形成杂交体,由此 在体外产生RNase P切割的底物。 EGS氢键与靶RNA形成部分tRNA样结构,包括氨酰受体茎,T干和环以及部分D茎。 EGS可以通过序列变化和对核苷酸的化学修饰来修饰。 EGS可以是单独的分子,也可以与RNase P催化RNA序列组合形成单个寡核苷酸分子(“RNase P内部导向序列”或RIGS)。 还公开了在体内随机选择和表达合适的EGS或RIGS的方法,以使选定的RNA成为宿主细胞RNA酶P或引入的RIGS切割的靶标,从而阻止靶RNA功能的表达。 该方法和组合物应该有用于在体内预防疾病或障碍引起的基因的表达。
    • 5. 发明授权
    • Polynucleotide ligands as anti-viral agents
    • 多核苷酸配体作为抗病毒剂
    • US06849610B1
    • 2005-02-01
    • US09721543
    • 2000-11-21
    • Fenyong LiuJun WangHong Jiang
    • Fenyong LiuJun WangHong Jiang
    • A61K31/70A01N43/04C07H21/04
    • A61K31/70
    • Infectious human cytomegalovirus (HCMV) were isolated in vitro from a pool of randomized sequences after sixteen or 21 cycles of selection and amplification. The ligands characterized exhibited high HCMV-binding affinity in vitro and effectively inhibited viral infection in tissue culture. Several ligands blocked viral entry. Their antiviral activity was also specific as the ligands only reacted with strains of HCMV, but not with the related herpes simplex virus 1 and human cells. Moreover, the ligands recognize several different epitopes. Thus, RNA ligands can function to bind to a human virus and block viral infection. The screening method may utilize the novel features of binding to intact infectious virus, partitioning the bound polynucleotides from unbound by passing through a porous filter, and enhancing the release of bound polynucleotides by treatment with protease.
    • 在16或21个循环选择和扩增后,从随机序列库中体外分离感染性巨细胞病毒(HCMV)。 特征的配体体外表现出高的HCMV结合亲和力,并有效抑制组织培养中的病毒感染。 几个配体阻止病毒进入。 它们的抗病毒活性也是特异性的,因为配体仅与HCMV菌株反应,而不与相关的单纯疱疹病毒1和人细胞反应。 此外,配体识别几个不同的表位。 因此,RNA配体可以起到与人类病毒结合并阻断病毒感染的作用。 筛选方法可以利用与完整感染性病毒结合的新特征,通过穿过多孔过滤器将结合的多核苷酸与未结合分开,并通过用蛋白酶处理增强结合的多核苷酸的释放。