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    • 72. 发明授权
    • Azide-containing chelators whose affinity for calcium ion is decreased
by illumination
    • 含钙螯合剂,其对钙离子的亲和力通过照射而降低
    • US5602258A
    • 1997-02-11
    • US968002
    • 1992-10-23
    • Roger Y. TsienStephen R. Adams
    • Roger Y. TsienStephen R. Adams
    • C07D277/28C07D413/04C07D413/14C07D263/30
    • C07D413/04C07D413/14
    • The present invention relates to a group of organic chelators whose affinity for calcium ion in solution is decreased by electromagnetic radiation. Specifically, the chelators are related to fura-2 and utilize the addition of an azide group to the 3-position of the benzofuron ring of a fura-2 type structure. Photolysis of the azide group causes the calcium ion affinity to decrease 100 to 1000 fold. These chelators when incorporated into rat fibroblasts either by microinjection or by incubation as the membrane-permeable, enzymatically-labile esters and flash-photolyzed cause large increases in intracellular free calcium ion. These chelators are used to generate controlled fast elevation of intracellular free calcium ion concentration to mimic or modulate a number of important cellular responses, especially in nerve or muscle.
    • 本发明涉及通过电磁辐射降低溶液中对钙离子的亲和力的一组有机螯合剂。 具体地说,螯合剂与fura-2相关,并且利用向fura-2型结构的苯并呋喃环的3位添加叠氮基。 叠氮化物基团的光解使钙离子亲和力降低100〜1000倍。 当这些螯合剂通过显微注射或通过温育作为膜可渗透的酶不稳定的酯并且闪光光解引入大鼠成纤维细胞时,引起细胞内游离钙离子的大量增加。 这些螯合剂用于产生受控的快速升高的细胞内游离钙离子浓度以模拟或调节许多重要的细胞反应,特别是在神经或肌肉中。
    • 73. 发明授权
    • Scanning confocal microscope providing a continuous display
    • 扫描共焦显微镜提供连续显示
    • US5283433A
    • 1994-02-01
    • US958038
    • 1992-10-05
    • Roger Y. Tsien
    • Roger Y. Tsien
    • G01N21/64G02B21/00H01J3/14
    • G02B21/008G02B21/0076
    • A scanning confocal microscope scans a sample with an incident beam of radiation, in a raster scan pattern, causing the sample to fluoresce and emit visible radiation in at least two wavelengths. A portion of the fluorescent light retraces a portion of the path optical of incident beam, to a dichroic mirror that separates it from the incident beam for detection by a pair of photomultiplier tubes. A data processor accumulates digital data from the photomultiplier tubes to form a succession of image data frames of the sample being scanned, in the two wavelengths. Image data for a selected number of frames in each wavelength is averaged and then recorded on a single track of a recording system, in an alternating fashion with averaged data for the other wavelength. In addition, a ratio of the averaged data for the two wavelengths is delivered to a video display.
    • 扫描共焦显微镜以光栅扫描图案中的入射光束扫描样品,导致样品在至少两个波长内发出可见光。 荧光的一部分将入射光束的光路的一部分返回到分色镜,该分色镜将其与入射光束分离,以便由一对光电倍增管检测。 数据处理器累积来自光电倍增管的数字数据,以在两个波长内形成扫描样本的一系列图像数据帧。 对每个波长中所选择的帧数的图像数据进行平均化,然后以与其他波长的平均数据交替的方式记录在记录系统的单个轨道上。 此外,两个波长的平均数据的比率被传送到视频显示器。
    • 74. 发明授权
    • Fluorescent indicator dyes for alkali metal cations
    • 用于碱金属阳离子的荧光指示剂染料
    • US5134232A
    • 1992-07-28
    • US391879
    • 1989-08-09
    • Roger Y. TsienAkwasi Minta
    • Roger Y. TsienAkwasi Minta
    • C07D273/00C07D273/08C07D413/04C07D413/14C07D491/04G01N33/84
    • C07D273/00C07D413/04C07D413/14C07D491/04G01N33/84
    • The invention discloses fluorescent chelator compounds that are especially useful to monitor and measure cytosolic concentrations of alkali metal cations such as Na.sup.+, K.sup.+, and Li.sup.+. The new compounds are comprised of: (1) crown ethers (that may or may not have substituent groups attached to the core carbons, but will always contain at least one core nitrogen) that are linked via the core nitrogen(s) to at least one (2) fluorophore that contains an additional heteroaromatic liganding center. In the currently preferred dye, SBFI, the core compound is crown ether 1,7-diaza-4,10,13-trioxacyclopentadecane and the heteroaromatic fluorophores are benzofurans that are linked to isophthalate groups. Selectivities for Na.sup.+ over K.sup.+ of about 20 are observed, resulting in effective dissociation constants for Na.sup.+ of about 20 mM against a background of 120 mM K.sup.+. Increasing [Na.sup.+ ] increases the ratio of excitation efficiency at 330-345 nm to that at 370-390 nm with emission collected at 450-550 nm, so that ratio fluorometry and imaging work at the same wavelengths as used with the well-known Ca.sup.2+ indicator fura-2. If the macrocyclic ring is increased in size to a 1,10-diaza-4,7,13,16-tetraoxacyclooctadecane, the chelators become selective for K.sup.+ over Na.sup.+. If the ring is decreased in size, for example to a 1,7-diaza-4,10-dioxacyclododecane, the chelators become selective for Li.sup.+ over Na.sup.+.
    • 本发明公开了特别可用于监测和测量碱金属阳离子如Na +,K +和Li +的胞质浓度的荧光螯合剂化合物。 新化合物包括:(1)冠醚(其可以具有或不具有连接到核心碳上的取代基但总是含有至少一个核心氮),其通过核心氮至少连接至少 一个(2)荧光团,其中包含一个额外的杂芳族结合中心。 在目前优选的染料中,SBFI,核心化合物是冠醚1,7二氮杂-4,10,13-三氧杂环十五烷,杂芳族荧光团是与间苯二酸酯基团连接的苯并呋喃。 观察到Na +在K +上约20的选择性,导致对于120mM K +背景的Na +约20mM的有效解离常数。 增加[Na +]增加了在330-345nm处的激发效率与在370-390nm的激发效率的比率,其中在450-550nm收集的发射,使得比例荧光测定和成像工作在与公知的Ca2 + 指标fura-2。 如果大环的大小增加到1,10-二氮杂-4,7,13,16-四氧杂环十八烷,则螯合剂对于Na +而言对K +变得选择性。 如果环尺寸减小,例如减小到1,7-diaza-4,10-二氧杂环十二烷,那么螯合剂对Na +的选择性变得更高。
    • 80. 发明授权
    • Substrates for beta-lactamase and uses thereof
    • β-内酰胺酶底物及其用途
    • US08071761B2
    • 2011-12-06
    • US11606642
    • 2006-11-29
    • Roger Y. TsienGregor Zlokarnik
    • Roger Y. TsienGregor Zlokarnik
    • C07D501/14
    • C07D501/36C07D501/00C07D505/00C07D519/00C12N9/86C12N15/85C12N2800/90C12N2830/002C12P17/184C12P17/188C12P35/00C12Q1/18C12Q1/34C12Q1/6897C12Q2334/00G01N2333/986G01N2415/00Y10S435/805
    • Substrates for β-lactamase of the general formula I in which one of X and Y is a fluorescent donor moiety and the other is a quencher (which may or may not re-emit); R′ is selected from the group consisting of H, lower (i.e., alkyl of 1 to about 5 carbon atoms) and (CH2)nOH, in which n is 0 or an integer from 1 to 5; R″ is selected from the group consisting of H, physiologically acceptable metal and ammonium cations, —CHR2OCO(CH2)nCH3, —CHR2OCOC (CH3)3, acylthiomethyl, acyloxy-alpha-benzyl, delta-butyrolactonyl, methoxycarbonyloxymethyl, phenyl, methylsulphinylmethyl, beta-morpholinoethyl, dialkylaminoethyl, acyloxyalkyl, dialkylaminocarbonyloxymethyl and aliphatic, in which R2 is selected from the group consisting of H and lower alkyl; A is selected from the group consisting of S, O, SO, SO2 and CH2; and Z′ and Z″ are linkers for the fluorescent donor and quencher moieties. Methods of assaying β-lactamase activity and monitoring expression in systems using β-lactamase as a reporter gene also are disclosed.
    • X和Y中的一个是荧光供体部分,另一个是猝灭剂(其可以或不再发射)的通式I的β-内酰胺酶底物; R'选自H,低级(即1至约5个碳原子的烷基)和(CH 2)nOH,其中n为0或1至5的整数; -CH 2 COO(CH 2)n CH 3,-CHR 2 OCOC(CH 3)3,酰基硫代甲基,酰氧基-α-苄基,δ-丁基内酰胺,甲氧基羰氧基甲基,苯基,甲基亚磺酰基甲基, β-吗啉基乙基,二烷基氨基乙基,酰氧基烷基,二烷基氨基羰氧基甲基和脂族基,其中R2选自H和低级烷基; A选自S,O,SO,SO 2和CH 2; 和Z'和Z“是荧光供体和猝灭剂部分的接头。 公开了使用β-内酰胺酶作为报道基因的系统中测定β-内酰胺酶活性和监​​测表达的方法。