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    • 2. 发明申请
    • NUCLEIC ACID ISOLATION
    • 核酸分离
    • WO1997034909A1
    • 1997-09-25
    • PCT/FR1997000496
    • 1997-03-20
    • BIO MERIEUXCROS, PhilippeELAISSARI, AbdelhamidMABILAT, ClaudePICHOT, ChristianRODRIGUE, MarcSANTORO, Lise
    • BIO MERIEUX
    • C07H01/08
    • C12N15/101C12N15/1006C12Q1/6806
    • A method for aqueous phase nucleic acid isolation from a sample, comprising a step of nucleic acid adsorption on a particulate substrate, is disclosed. The method comprises an adsorption reagent preparation step (a) providing an adsorption reagent that includes a sol consisting of an aqueous continuous phase and a dispersed particulate substrate phase including a functionalised particulate polymer prepared by polymerising (1) a first water-soluble acrylamide or acrylamide derivative monomer, (2) at least one cross-linking agent and (3) at least one second water-soluble, cationic and functional monomer, said polymer having a predetermined lower critical solubility temperature (LCST) of 25-45 DEG C; a contact step (b) wherein the adsorption reagent is contacted with the sample containing the nucleic acid; an adsorption step (c) wherein, to carry out the contact step (b), at least one parameter is selected for the reaction medium, said parameters being a pH no higher than 7, an ionic strength no higher than 10 M, and a temperature lower than the polymer LCST; a separation step (d) wherein the dispersed phase is separated from the continuous phase, optionally after it has been observed that adsorption has occurred; and a desorption step (e) wherein the nucleic acid is desorbed from the particulate substrate by increasing the ionic strength until an ionic strength higher than 10 M is achieved.
    • 公开了一种从样品中分离水相核酸的方法,包括在颗粒基质上的核酸吸附步骤。 该方法包括一种吸附试剂制备步骤(a),该步骤(a)提供一种吸附试剂,该吸附试剂包括由含水连续相组成的溶胶和分散的颗粒基质相,所述分散的颗粒底物相包括通过聚合制备的官能化颗粒聚合物(1)第一水溶性丙烯酰胺或丙烯酰胺 衍生单体,(2)至少一种交联剂和(3)至少一种第二水溶性阳离子和功能性单体,所述聚合物具有25-45℃的预定的较低临界溶解温度(LCST); 接触步骤(b),其中所述吸附剂与含有所述核酸的样品接触; 吸附步骤(c)其中,为了进行接触步骤(b),为反应介质选择至少一个参数,所述参数为不高于7的pH,不高于10 -2的离子强度 M,温度低于聚合物LCST; 分离步骤(d),其中分散相与连续相分离,任选地在已经观察到发生吸附之后; 和解吸步骤(e),其中通过增加离子强度直到达到高于10μM的离子强度,从核粒子脱离。
    • 4. 发明申请
    • REAGENT AND METHOD FOR THE DETECTION OF A NUCLEOTIDE SEQUENCE WITH SIGNAL AMPLIFICATION
    • 用于检测具有信号放大的核苷酸序列的试剂和方法
    • WO1995008000A2
    • 1995-03-23
    • PCT/FR1994001084
    • 1994-09-15
    • BIO MERIEUXMANDRAND, BernardCROS, PhilippeDELAIR, ThierryCHARLES, Marie-HélèneEROUT, Marie-NoëllePICHOT, Christian
    • BIO MERIEUX
    • C12Q01/68
    • C12Q1/6813C08G81/02C12Q1/682
    • Kit for the detection of a nucleotide sequence of interest comprising at least one nucleotide probe marked with a tracer. The kit contains, in suitable containers, a reagent essentially comprising a linear backbone copolymer having lateral substituents, whose chain consists of a first type of repetitive unit and at least one other type of repetitive unit, in which at least one part of the units of the first type have a lateral substituent comprising a nucleotide unit, such a lateral substituent not being present on the other types of units. Each of said nucleotide units, all of which are identical, comprise at least one nucleotide sequence capable of hybridizing with said sequence of interest and nucleotide sequence capable of hybridizing with said probe, the reagent containing on average more than two of said nucleotide units, in molar equivalents, per mole of polymer. Such a reagent enables signal amplification to be obtained, and therefore lowers the sensitivity threshold. Application, in particular, in the production of tests for the detection of pathogenic organisms, or in the diagnosis of genetic diseases.
    • 用于检测感兴趣的核苷酸序列的试剂盒,其包含用示踪剂标记的至少一个核苷酸探针。 试剂盒在合适的容器中含有基本上包含具有侧向取代基的线性骨架共聚物的试剂,其链由第一类型的重复单元和至少一种其它类型的重复单元组成,其中至少一部分单元 第一类型具有包含核苷酸单元的侧向取代基,这种侧向取代基不存在于其它类型的单元上。 所述核苷酸单元中的每一个都相同,包含至少一个能够与所述感兴趣的序列杂交的核苷酸序列和能够与所述探针杂交的核苷酸序列,所述试剂平均包含两个以上的所述核苷酸单元, 摩尔当量,每摩尔聚合物。 这样的试剂能够获得信号放大,因此降低灵敏度阈值。 特别是应用于生产用于检测病原体的检测或遗传疾病的诊断。
    • 8. 发明申请
    • METHOD FOR DETECTING AND/OR QUANTIFYING A GLIOTOXIC FACTOR
    • 检测和/或定量GLIOTOXIC因子的方法
    • WO1998011439A1
    • 1998-03-19
    • PCT/FR1997001620
    • 1997-09-12
    • BIO MERIEUXMALCUS-VOCANSON, CarinePERRON, HervéMANDRAND, Bernard
    • BIO MERIEUX
    • G01N33/564
    • G01N33/564G01N33/5014G01N33/6896
    • The invention proposes a method for detecting and/or quantifying, in a biological sample a cytotoxic factor, in particular a gliotoxic factor, with respect to adherent target cells, in particular macroglial cells, the toxicity of which causes the death by apoptosis of said cells. The method consists in providing an initial fraction of said sample, optionally enriched with said toxic factor by previous treatment, incubating said initial toxic factor with a reference culture medium comprising adherent target cells, and detecting and/or quantifying the adherent target cells killed by apoptosis, by flux cytometry, at least one direct or indirect characteristic associated with the apoptotic adherent cells of the whole or part of the incubated medium, which, if it is present and/or is quantified, qualifies the sample as positive, i.e. as containing said toxic factor. The initial biological sample is preferably a urine specimen.
    • 本发明提出了一种用于在生物样品中检测和/或定量细胞毒性因子,特别是胶质毒性因子的方法,涉及粘附靶细胞,特别是大胶质细胞,其毒性通过所述细胞的凋亡导致死亡 。 该方法包括提供所述样品的初始级分,任选地通过先前的处理富集所述毒性因子,将所述初始毒性因子与包含贴壁靶细胞的参照培养基孵育,并检测和/或定量由细胞凋亡杀死的贴壁靶细胞 通过流式细胞术,与整个或部分培养的培养基的凋亡贴壁细胞相关的至少一种直接或间接特征,如果存在和/或定量,则将样品鉴定为阳性,即含有所述 毒性因素。 初始生物样品优选为尿样。