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    • 1. 发明申请
    • CELL PERMEABILIZATION AND STABILIZATION REAGENT AND METHOD OF USE
    • 细胞渗透和稳定试剂及其使用方法
    • WO2006086157A1
    • 2006-08-17
    • PCT/US2006/002612
    • 2006-01-24
    • BECKMAN COULTER, INC.
    • RABELLINO, EnriqueVAN AGTHOVEN, AndreasMALERGUE, Fabrice
    • A01N37/18A61K38/00
    • A61K31/198Y10T436/107497
    • A cell permeabilization and stabilization reagent and method of use are disclosed. The reagent contains a N-acyl sarcosine or a salt thereof, a pH adjusting agent to adjust pH of the reagent in a range from about 4 to about 6; and an aqueous medium; the reagent having a low ionic strength defined by a conductivity of less than 9.0 mS/cm. The reagent further contains bovine serum albumin and glycerol. The reagent may further include an alkyl sulfate surfactant. Upon incubating the cells with the reagent, the reagent permeates the cellular membrane to allow penetration of an intracellular marker, causes intracellular protein aggregation within the cellular membrane, while preserves a cellular constituent for binding with a cellular marker for subsequent analysis by flow cytometry.
    • 公开了一种细胞透化和稳定剂及其使用方法。 该试剂含有N-酰基肌氨酸或其盐,pH调节剂以将试剂的pH调节在约4至约6的范围内; 和水介质; 该试剂具有由小于9.0mS / cm的电导率限定的低离子强度。 试剂还含有牛血清白蛋白和甘油。 试剂还可以包括烷基硫酸盐表面活性剂。 在将细胞与试剂一起孵育时,试剂渗透细胞膜以允许细胞内标记物穿透,引起细胞膜内的细胞内蛋白质聚集,同时保留用于与细胞标志物结合的细胞成分,以便随后通过流式细胞术分析。
    • 3. 发明申请
    • METHOD OF MEASUREMENT OF MICRONUCLEATED ERYTHROCYTE POPULATIONS
    • 测定微球蛋白尿人群的方法
    • WO2009017959A1
    • 2009-02-05
    • PCT/US2008/070026
    • 2008-07-15
    • BECKMAN COULTER, INC.
    • WOLFERS, JosephVAN AGTHOVEN, AndreasMALERGUE, FabriceHERBERT, Michel
    • C12Q1/68
    • C12Q1/6806
    • A method of measuring micronucleated erythrocyte populations is disclosed. The method includes contacting a sample containing erythrocyte populations with a fluorescently labeled antibody specific to immature erythrocytes among erythrocyte populations; adding an aqueous permeation reagent to the sample and incubating the formed permeation sample mixture for an incubation time sufficient to allow the permeation reagent to render cellular membrane of the erythrocyte populations permeable to RNase and dye; adding a RNase reagent to degrade RNA and to inhibit further reaction of permeation reagent; adding a fluorescent nucleic acid dye reagent to stain DNA representing micronuclei in the erythrocyte populations; performing light scatter and fluorescence measurements of the final sample mixture on a flow cytometer; differentiating micronucleated erythrocyte populations from other cell types; and reporting the micronucleated erythrocyte populations of the sample. The method avoids ultracold fixation, centhfugation, and washing cells in sample preparation.
    • 公开了一种测量微核红细胞种群的方法。 该方法包括使含有红细胞群体的样品与红细胞群体中未成熟红细胞特异性的荧光标记抗体接触; 向样品中加入水性渗透试剂,并将形成的渗透样品混合物孵育足以允许渗透试剂使红细胞群的细胞膜可透过核糖核酸酶和染料的孵育时间; 加入RNase试剂降解RNA并抑制渗透试剂的进一步反应; 加入荧光核酸染料试剂染色代表红细胞群体中的微核的DNA; 在流式细胞仪上进行最终样品混合物的光散射和荧光测量; 区分微核红细胞种群与其他细胞类型; 并报告样品的微核红细胞数。 该方法避免了样品制备中的超冷固定,离心和洗涤细胞。
    • 7. 发明申请
    • SYSTEMS AND METHODS TO DETERMINE THE AGE OF CELLS
    • 确定细胞年龄的系统和方法
    • WO2016040870A1
    • 2016-03-17
    • PCT/US2015/049797
    • 2015-09-11
    • BECKMAN COULTER, INC.
    • VAN AGTHOVEN, AndreasMALERGUE, FabriceGODEFROY, ChristopheRABELLINO, Enrique
    • G01N33/72G01N15/14G01N15/00
    • G01N33/721G01N15/1459G01N33/723G01N33/726G01N2015/0076G01N2015/1402G01N2015/1477G01N2015/1488G01N2333/805
    • Systems and methods are provided for determining the age of cellular hemoglobin in individual red blood cells in a blood sample by determining the percentage of HbA1c. In embodiments, a method includes measuring side scatter and fluorescence of the individual red blood cells and identifying immature red blood cells and mature red blood cells from the side scatter and fluorescence measurement. In embodiments, data collected includes the exact number of red blood cells, the fraction limits in fluorescence and side scatter units, the mean value of each fraction in fluorescence and side scatter units, the mean FL1 values per fraction in arbitrary units and the mean side scatter values per fraction in arbitrary units. In embodiments, a method also includes deriving a HbA1c content from the measured mean fluorescence of the individual red blood cells and determining the percentage of HbA1c from the HbA1c content and the hemoglobin content of the red blood cells.
    • 提供系统和方法,用于通过确定HbA1c的百分比来确定血液样品中个体红细胞中细胞血红蛋白的年龄。 在实施方案中,一种方法包括测量各个红细胞的侧向散射和荧光,并从侧向散射和荧光测量鉴定未成熟的红细胞和成熟的红细胞。 在实施例中,收集的数据包括确切的红细胞数目,荧光和侧面散射单位的分数限度,荧光和侧面散射单位中每个分数的平均值,任意单位的平均FL1值,平均值 每个分数的散点值为任意单位。 在实施方案中,方法还包括从所测量的各个红细胞的平均荧光中衍生HbA1c含量,并确定HbA1c含量的HbA1c百分比和红细胞的血红蛋白含量。