Method for Verifying and/or Identifying Hormonally Effective Substances
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United States of America Patent
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Issued Date -
Oct 20, 2011
app pub date -
Dec 22, 2009
filing date -
Dec 22, 2008
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Abstract
The invention relates to a method for verifying and/or identifying hormonally effective substances using the pheromone system of yeast, to yeast cells for carrying out the method, and to the use thereof. The method according to the invention comprises the following steps: a) adding yeast culture medium or buffer to a sample which presumably contains a hormonally effective substance, b) thereafter contacting the sample with haploid yeast cells that possess features 1 through 3: 1. the DNA sequence coded for a heterologous hormone receptor is placed under the control of a constitutive promoter, 2. the DNA sequence coded for a yeast pheromone is placed under the control of a promoter that can be regulated by the hormone receptor, 3. a gene that is coded for a receptor for the yeast pheromone is constitutively expressed, wherein the activation of the hormone receptor by the hormonally effective substance leads to the expression and secretion of the yeast pheromone, and c) the physiological and/or morphological changes of haploid yeast cells are detected.
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