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    • 4. 发明授权
    • Recovery of rare cells using a microchannel apparatus with patterned posts
    • 使用具有图案柱的微通道装置回收稀有电池
    • US08158410B2
    • 2012-04-17
    • US11038920
    • 2005-01-18
    • Zhongliang TangRam S. BhattPavel Tsinberg
    • Zhongliang TangRam S. BhattPavel Tsinberg
    • C12M1/34C12M3/00
    • G01N1/40G01N1/405Y10T436/25375
    • A microflow apparatus for separating or isolating cells from a bodily fluid or other liquid sample uses a flow path where straight-line flow is interrupted by a pattern of transverse posts. The posts are spaced across the width of a collection region in the flow path, extending between the upper and lower surfaces thereof; they have rectilinear surfaces, have arcuate cross-sections, and are randomly arranged so as to disrupt streamlined flow. Sequestering agents, such as Abs, are attached to all surfaces in the collection region via a hydrophilic coating, preferably a hydrogel containing isocyanate moieties or a PEG or polyglycine of substantial length, and are highly effective in capturing cells or other targeted biomolecules as a result of such streamlined flow disruption.
    • 用于从体液或其他液体样品中分离或分离细胞的微流装置使用流线,其中直线流被横向柱的图案中断。 柱在流动路径中的收集区域的宽度上间隔开,并在其上表面和下表面之间延伸; 它们具有直线表面,具有弧形横截面,并且被随机排列以便破坏流线型流动。 螯合剂如Abs通过亲水涂层,优选含有非常长的异氰酸酯部分或PEG或聚甘氨酸的水凝胶附着在收集区域中的所有表面上,因此在捕获细胞或其它靶向生物分子中是非常有效的 这种流线型流动中断。
    • 7. 发明申请
    • Detection of chromosomal disorders
    • 检测染色体异常
    • US20050250111A1
    • 2005-11-10
    • US10840208
    • 2004-05-05
    • Zhiyi XieSoonkap HahnTim Watanaskul
    • Zhiyi XieSoonkap HahnTim Watanaskul
    • C12Q1/68C12P19/34
    • C12Q1/6837C12Q2537/143C12Q2531/113
    • Methods for detecting in a single assay any one of multiple chromosomal disorders that result from aneuploidy or certain mutations, particularly microdeletions, and kits for use therein. A polymerase chain reaction (PCR) is carried out to amplify eukaryotic genomic DNA using a plurality of primer oligonucleotide pairs wherein one primer of each pair has a detectable label attached 5′ thereto. A plurality of the primer pairs are targeted to DNA segments of different chromosomes of interest which are indicative of potential chromosomal disorders, and one pair is targeted for a control gene. The amplified PCR products are purified, and single-stranded DNA having the detectable labels is obtained therefrom and hybridized with spots on a microarray that each contain DNA oligonucleotide probes having nucleotide sequences complementary to a nucleotide sequence of one strand of each segment. The microarray is imaged for presence of labels on its respective spots, and the absence or presence of chromosomal disorders as indicated by one or more of the targeted DNA segments of interest is diagnosed by first comparing the imaging results to the imaging of spots specific to the control gene and then to results obtained from imaging normal DNA.
    • 在单次测定中检测由非整倍体或某些突变,特别是微缺失引起的多种染色体紊乱中的任何一种以及用于其中的试剂盒的方法。 进行聚合酶链反应(PCR)以使用多个引物寡核苷酸对扩增真核基因组DNA,其中每对的一个引物具有附着5'的可检测标记。 多个引物对靶向不同染色体的DNA片段,其指示潜在的染色体病症,一对靶向对照基因。 纯化扩增的PCR产物,从其中获得具有可检测标记的单链DNA,并与微阵列上的斑点杂交,每个点均含有具有与每个片段的一条链的核苷酸序列互补的核苷酸序列的DNA寡核苷酸探针。 成像微阵列以在其各自的斑点上存在标记,并且通过首先将成像结果与成像特异性的斑点的成像进行比较来诊断由一个或多个目标DNA片段指示的染色体病症的不存在或存在 控制基因,然后从成像正常DNA获得的结果。
    • 8. 发明申请
    • mRNA expression analysis
    • mRNA表达分析
    • US20040265883A1
    • 2004-12-30
    • US10851573
    • 2004-05-20
    • Biocept, Inc.
    • Tony J. Pircher
    • C12Q001/68
    • C12Q1/6816C12Q1/6813C12Q1/6837C12Q2545/114C12Q2525/173C12Q2523/107
    • Quantification in a straightforward manner in an mRNA expression analysis is accomplished by using biotinylated oligo d(T) and coupling to a solid support (e.g., streptavidin-derivatized magnetic beads). Labeled targets specific to certain mRNAs of interest that are to be identified and quantified are added to a biological sample containing the mRNAs and biotinylated oligo d(T). The beads are preferably added after hybridization, but may be earlier added. Following attachment to the beads, unbound and non-specifically bound targets and non-mRNA material are removed by successive stringent washings. All the mRNA material is then eluted from the beads by subjection to conditions that separate the poly A and the oligo d(T), and the original mRNAs are then degraded by basic hydrolysis to leave single-strand synthetic targets, which are then hybridized to their specific probes suitably carried on a microarray. The probes and the targets are of synthetic designs, and because all affinity reactions, including hybridization reactions between the targets and the mRNAs, are finalized when the mRNA is bound to the solid substrate, purification of adducts can be performed by simple washings in combination with magnetic separation, avoiding any potentially laborious and time-consuming column separation, filter preparation, centrifugation or preciptitation.