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    • 4. 发明授权
    • Process for screening for malignant tumors by determining the amount of
GlcNAc transferase V activity
    • 通过测定GlcNAc转移酶V活性的量来筛选恶性肿瘤的方法
    • US5605807A
    • 1997-02-25
    • US304952
    • 1994-09-13
    • James W. Dennis
    • James W. Dennis
    • C12Q1/48G01N33/574G01N33/48
    • C12Q1/48G01N33/57484Y10S435/81Y10S435/96Y10S436/813Y10S436/815Y10S436/827
    • A process is provided for screening for a malignant tumor. The process comprises the steps of determining the amount of GlcNAc transferase V activity in a tumor sample by reacting the GlcNAc transferase V in a tumor sample with an acceptor substrate and a sugar nucleotide donor to produce a detectable change, and detecting the change. The acceptor substrate is an oligosaccharide, a glycopeptide or a glycoprotein having the structure GlcNAc .beta.1-2Man .alpha.1-6Man-R.sub.1. R.sub.1 is GlcNAc .beta.1-4GlcNAc with or without fucose or a synthetic linker. The sugar nucleotide donor is uridine diphospho-N-acetylglycosamine. The amount of GlcNAc transferase V activity in the sample is thereby determined. A determination of the malignancy of the tumor is made by comparing the amount of GlcNAc transferase V activity in the sample with an amount of GlcNAc transferase V associated with normal tissues or with known malignant tumors. A diagnostic kit for screening for a malignant tumor is provided. The kit comprises an acceptor substrate and a sugar nucleotide donor to interact with GlcNAc transferase V in a tumor sample to produce a detectable change, and means for detecting the change.
    • 提供了筛选恶性肿瘤的方法。 该方法包括通过使肿瘤样品中的GlcNAc转移酶V与受体底物和糖核苷酸供体反应以产生可检测的变化并检测该变化来确定肿瘤样品中GlcNAc转移酶V活性的量的步骤。 受体底物是具有GlcNAcβ1-2Manα1-6Man-R1结构的寡糖,糖肽或糖蛋白。 R1是具有或不具有岩藻糖的GlcNAcβ1-4GlcNAc或合成接头。 糖核苷酸供体是尿苷二磷酸-N-乙酰氨基糖。 由此确定样品中GlcNAc转移酶V活性的量。 通过将样品中GlcNAc转移酶V活性的量与正常组织或已知恶性肿瘤相关的GlcNAc转移酶V的量进行比较来确定肿瘤恶性。 提供了一种用于筛选恶性肿瘤的诊断试剂盒。 试剂盒包括受体底物和糖核苷酸供体,其与肿瘤样品中的GlcNAc转移酶V相互作用以产生可检测的变化,以及用于检测变化的装置。