Bacterial diagnostic probe
AssigneeInstitut Pasteur
InventorsEric Gilson, Jean-Marie Clement, David Perrin, Agnes Ullmann, Maurice Hofnung
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AssigneeInstitut Pasteur
InventorsEric Gilson, Jean-Marie Clement, David Perrin, Agnes Ullmann, Maurice Hofnung
Estimating the term…
A test kit for the identification of various bacterial species groupings comprises a DNA probe which can identify palindromic units specific to particular bacterial species or species groupings. Such probes are highly specific for particular species or species subgroups. Accordingly, specific identification of bacteria may be achieved.
A method for determining the presence or absence of Escherichia coli or Salmonella species in a sample comprising enterobacterial species, wherein said method comprises:
A method for determining the presence or absence of Escherichia coli or Salmonella species nucleic acid in a sample comprising enterobacterial species nucleic acid, wherein said method comprises:
A method for determining the presence or absence of Bordetella pertussis in a sample, wherein said method comprises:
A method for determining the presence or absence of Bordetella pertussis nucleic acid in a sample, wherein said method comprises:
A diagnostic kit for the detection of the presence or absence of Escherichia coli or Salmonella species in a sample comprising enterobacterial species, comprising
A diagnostic kit for the detection of the presence or absence of Bordetella pertussis in a sample, comprising
An isolated single- or double-stranded DNA containing one or more of the nucleotide sequences selected from the group consisting of:
An isolated DNA containing:
An isolated single- or double-stranded DNA containing the following nucleotide sequence:
An isolated DNA containing:
An isolated single- or double-stranded DNA containing the following nucleotide sequence:
An isolated DNA containing:
An isolated single- or double-stranded DNA containing the following nucleotide sequence:
An isolated DNA containing:
An isolated single- or double-stranded DNA containing the following nucleotide sequence:
An isolated DNA containing:
An isolated single- or double-stranded DNA containing the following nucleotide sequence:
An isolated DNA containing:
An isolated single- or double-stranded DNA containing the following nucleotide sequence:
An isolated DNA containing:
An isolated single- or double-stranded DNA containing the following nucleotide sequence:
An isolated DNA containing:
An isolated single- or double-stranded DNA containing the following nucleotide sequence:
An isolated DNA containing:
An isolated single- or double-stranded DNA containing the following nucleotide sequence:
An isolated DNA containing:
An isolated single- or double-stranded DNA containing the following nucleotide sequence:
An isolated DNA containing:
An isolated single- or double-stranded DNA containing one or more of the nucleotide sequences selected from the group consisting of:
An isolated DNA containing:
Dependencies are inferred from the claim text.
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Hybridisation assays: enhancement of hybridisation reaction
Involving nucleic acids: nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes
Nucleic acid products used in the analysis of nucleic acids, e.g. primers or probes: for detection or identification of organisms
For detection or identification of organisms: for bacteria
Term ended 20 Feb 2013 (estimated)
USPTO file history isn’t available for this patent, so only indexed dates are shown.
1. Field of the Invention
This invention relates to a diagnostic probe for bacteria based upon highly specific nucleotide repeat sequences, and more specifically to diagnostic test kits for this purpose.
2. Background
FIG. 1 illustrates the palindromic unit consensus from E. coli and from S. typhimurium.
FIG. 2 illustrates the conservation of primary structures of E. coli and S. typhimurium PU sequences.
FIG. 3 presents a comparison of the structure of the 3' flanking region of the glnA gene in Klebsiella pneumoniae, S. typhimurium and E. coli and of the ushA gene in S. typhimurium and E. coli.
Reference will now be made in detail to the presently preferred embodiments of the invention, which, together with the following examples, serve to explain the principles of the invention.
DNA sequence analysis of E. coli and S. typhimurium genomes has revealed the presence of a family of highly repeated DNA sequences: the palindromic unit (PU) family. This discovery was unexpected, since prokaryotic genomes are generally small and are believed to comprise only low-copy number DNA sequences. Britten, R. J. and Kohne, D. E. (1968) Science 161: 529-560. There may be on the order of 10.sup.3 copies of PU sequences in E. coli DNA, accounting for 1% of the genome, a percentage that is comparable to values found for many families of repetitive DNA in eukaryotic genomes.
Structure and genomic localization of PU sequences