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    • 1. 发明申请
    • PROTEIN TYROSINE PHOSPHATASE MUTATIONS IN CANCERS
    • 蛋白质酪氨酸磷酸酶突变体
    • WO2005113824A3
    • 2006-06-29
    • PCT/US2005017105
    • 2005-05-16
    • WANG ZHENGHEVELCULESCU VICTORKINZLER KENNETH WVOGELSTEIN BERT
    • WANG ZHENGHEVELCULESCU VICTORKINZLER KENNETH WVOGELSTEIN BERT
    • C12Q1/68
    • C12Q1/6886C12N9/16C12Q2600/112C12Q2600/136C12Q2600/156C12Q2600/158C12Y301/03048G01N33/5011G01N2333/916
    • Tyrosine phosphorylation, regulated by protein tyrosine phosphatases (PTPs) and kinases (PTKs), is important in signaling pathways underlying tumorigenesis. A mutational analysis of the tyrosine phosphatase gene superfamily in human cancers identified 83 somatic mutations in six PTPs (PTPRF, PTPRG, PTPRT, PTPN3, PTPN13, PTPN14) affecting 26 % of colorectal cancers and a smaller fraction of lung, breast and gastric cancers. Fifteen mutations were nonsense, frameshift or splice site alterations predicted to result in truncated proteins lacking phosphatase activity. Five missense mutations in the most commonly altered PTP (PTPRP) were biochemically examined and found to reduce phosphatase activity. Expression of wild-type but not a mutant PTPRT in human cancer cells inhibited cell growth. These observations suggest that the tyrosine phosphatase genes are tumor suppressor genes, regulating cellular pathways that may be amenable to therapeutic intervention.
    • 由蛋白酪氨酸磷酸酶(PTP)和激酶(PTK)调节的酪氨酸磷酸化在肿瘤发生的信号通路中是重要的。 人类癌症中酪氨酸磷酸酶基因超家族的突变分析鉴定了影响26%结肠直肠癌和较小部分肺癌,乳腺癌和胃癌的6种PTPs(PTPRF,PTPRG,PTPRT,PTPN3,PTPN13,PTPN14)中的83个体细胞突变。 十五个突变是无义,移位或剪接位点改变,预计会导致截短的蛋白质缺乏磷酸酶活性。 在生物化学检查中发现最常改变的PTP(PTPRP)中的五个错义突变被发现可以降低磷酸酶活性。 野生型但不是突变PTPRT在人类癌细胞中的表达抑制细胞生长。 这些观察表明,酪氨酸磷酸酶基因是肿瘤抑制基因,调节可能适合于治疗性干预的细胞途径。
    • 8. 发明申请
    • THE MICRORNAOME
    • 微笑
    • WO2008103135A3
    • 2008-12-24
    • PCT/US2007004518
    • 2007-02-16
    • UNIV JOHNS HOPKINSCUMMINS JORDANVELCULESCU VICTORKINZLER KENNETH WVOGELSTEIN BERT
    • CUMMINS JORDANVELCULESCU VICTORKINZLER KENNETH WVOGELSTEIN BERT
    • C07H21/02A01N43/04A61K31/70C07H21/04C12N15/113
    • C12N15/113C12N2310/141C12N2320/11C12N2330/10C12N2510/00C12Q1/6886
    • MicroRNAs (miRNAs) are a class of small noncoding RNAs that have important regulatory roles in multicellular organisms. The public miRNA database contains 321 human miRNA sequences, 234 of which have been experimentally verified. To explore the possibility that additional miRNAs are present in the human genome, we have developed an experimental approach called miRNA serial analysis of gene expression (miRAGE) and used it to perform the largest experimental analysis of human miRNAs to date. Sequence analysis of 273,966 small RNA tags from human colorectal cells allowed us to identify 200 known mature miRNAs, 133 novel miRNA candidates, and 112 previously uncharacterized miRNA* forms. To aid in the evaluation of candidate miRNAs, we disrupted the Dicer locus in three human colorectal cancer cell lines and examined known and novel miRNAs in these cells. The miRNAs are useful to diagnose and treat cancers.
    • 微小RNA(miRNA)是一类在多细胞生物体中具有重要调节作用的小型非编码RNA。 公共miRNA数据库包含321个人类miRNA序列,其中234个已经通过实验验证。 为了探讨其他miRNA存在于人类基因组中的可能性,我们开发了一种称为miRNA序列分析基因表达(miRAGE)的实验方法,并将其用于迄今为止对人类miRNA进行最大的实验分析。 来自人结肠直肠细胞的273,966个小RNA标签的序列分析允许我们鉴定200个已知的成熟miRNA,133个新型miRNA候选物和112个先前未表征的miRNA *形式。 为了帮助评估候选miRNA,我们破坏了三种人结肠直肠癌细胞系中Dicer基因座,并检测了这些细胞中已知和新型的miRNA。 这些miRNA可用于诊断和治疗癌症。