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    • 7. 发明申请
    • Antisense Transcriptomes of Cells
    • 细胞反义转录组
    • US20120009573A1
    • 2012-01-12
    • US13131413
    • 2009-12-02
    • Bert VogelsteinKenneth W. KinzlerYiping HeVictor VelculescuNickolas Papadopoulos
    • Bert VogelsteinKenneth W. KinzlerYiping HeVictor VelculescuNickolas Papadopoulos
    • C12Q1/68
    • C12Q1/6844G06F19/22C12Q2539/113C12Q2523/125C12Q2521/107
    • Transcription in mammalian cells can be assessed at a genome-wide level, but it has been difficult to reliably determine whether individual transcripts are derived from the Plus- or Minus-strands of chromosomes. This distinction can be critical for understanding the relationship between known transcripts (sense) and the complementary antisense transcripts that may regulate them. Here we describe a technique that can be used to (i) identify the DNA strand of origin for any particular RNA transcript and (ii) quantify the number of sense and antisense transcripts from expressed genes at a global level. We examined five different human cell types and in each case found evidence for antisense transcripts in 2900 to 6400 human genes. The distribution of antisense transcripts was distinct from that of sense transcripts, was non-random across the genome, and differed among cell types. Anti-sense transcripts thus appear to be a pervasive feature of human cells, suggesting that they are a fundamental component of gene regulation.
    • 哺乳动物细胞中的转录可以在全基因组范围内进行评估,但是难以可靠地确定个体转录本是否衍生自染色体的加号或阴影链。 这种区别对于了解已知转录物(有义)和可能调节它们的互补反义转录物之间的关系可能是至关重要的。 在这里,我们描述了一种可用于(i)识别任何特定RNA转录物的DNA链起源的技术,(ii)在全球范围内量化来自表达基因的正义和反义转录本的数量。 我们检查了五种不同的人类细胞类型,并且在每种情况下都发现2900至6400个人类基因中的反义转录物的证据。 反义转录物的分布与有义转录物的分布不同,在基因组中是非随机的,并且在细胞类型之间不同。 因此,反义转录物似乎是人类细胞的普遍特征,表明它们是基因调控的基本组成部分。
    • 8. 发明授权
    • Protein tyrosine phosphatase mutations in cancers
    • 蛋白酪氨酸磷酸酶突变在癌症
    • US08039210B2
    • 2011-10-18
    • US11596349
    • 2005-05-16
    • Zhenghe WangVictor VelculescuKenneth W. KinzlerBert Vogelstein
    • Zhenghe WangVictor VelculescuKenneth W. KinzlerBert Vogelstein
    • 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。 这些观察结果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干预的细胞途径。