Chemistry: molecular biology and microbiology – Measuring or testing process involving enzymes or... – Involving antigen-antibody binding – specific binding protein...
Reexamination Certificate
2007-08-14
2007-08-14
Le, Long V. (Department: 1641)
Chemistry: molecular biology and microbiology
Measuring or testing process involving enzymes or...
Involving antigen-antibody binding, specific binding protein...
C435S007500, C435S968000, C435S975000, C435S007920, C435S970000, C436S544000, C436S546000, C436S087000, C436S172000, C436S532000, C530S402000
Reexamination Certificate
active
10089776
ABSTRACT:
A method for detecting a cytokine in a biological fluid sample with a high sensitivity is provided. A time-resolved fluoroimmunoassay (TR-FIA) method including a step of forming on a solid phase a composite in which a cytokine is captured and which includes a fluorescent structural portion which has been complexed with a lanthanoid metal ion, and measuring fluorescence of the fluorescent structural portion. The composite is formed of a structure in which (a) a first antibody including a portion bound to a solid phase and a region bindable to a cytokine; (b) the cytokine; (c) a second antibody including a region bindable to the cytokine and a portion to which biotin is bound; (d) a conjugate including streptoavidin or avidin and a fluorescent structural portion capable of being complexed with a lanthanoid metal ion; and (e) the lanthanoid metal ion are bound. The fluorescent structural portion is represented by General Formula (I): R—Ar—C(═O)—CH2—C(═O)—CnF2n—X.
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Honjo Tasuku
Ikegawa Masaya
Matsumoto Kazuko
Tashiro Kei
Haq Shafiqul
Japan Science and Technology Corporation
Le Long V.
Snell & Wilmer L.L.P.
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