发明名称 |
Cell bioassay of neurotoxins |
摘要 |
A cell bioassay is provided for determining the presence in a fluid sample of a sodium channel-activating toxin wherein (a) a fluid sample is incubated in the presence of a culture of cells which express voltage-gated sodium channels and which are responsive in a dose-dependent manner to sodium channel-activating toxins and a medium comprising an agent which causes persistent activation of the voltage-gated sodium channel; (b) the culture is incubated with a medium comprising an indicator which is acted upon by living cells to generate a discernable result, (c) the culture is observed for an incidence of the result, and an observation of the result is correlated with the presence of the toxin in the sample. A simplified assay where steps (a) and (b) are effected together also is provided, as is a cell bioassay for determining the sodium channel affect of a toxin in a fluid sample. A competitive assay for sodium channel-blocking toxins also is provided wherein the fluid sample and culture of cells are incubated with a medium comprising (i) an agent which causes persistent activation of the voltage-gated sodium channel and (ii) a sodium channel-activating toxin. Kits for performing the assays also are provided.
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申请公布号 |
US5858687(A) |
申请公布日期 |
1999.01.12 |
申请号 |
US19950450877 |
申请日期 |
1995.05.26 |
申请人 |
THE UNITED STATES OF AMERICA AS REPRESENTED BY THE DEPARTMENT OF HEALTH AND HUMAN SERVICES |
发明人 |
MANGER, RONALD L.;LEJA, LINDA S.;LEE, SUE Y.;HUNGERFORD, JAMES M.;WEKELL, MARLEEN M. |
分类号 |
C12Q1/02;G01N33/50;G01N33/68;(IPC1-7):G01N33/567 |
主分类号 |
C12Q1/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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