Compositions and methods for detecting methicillin-resistant staphylococcus aureus
AssigneeRoche Molecular Systems, Inc.
InventorsEllen H. Fiss Hobart, Jingtao Sun
Life of this patent
Estimating the term…
Abstract
Methods for the rapid detection of the presence or absence of mecA- and/or mecC-containing Staphylococcus aureus (mecA/mecC-MRSA) in a biological or non-biological sample are described. The methods can include performing an amplifying step, a hybridizing step, and a detecting step. Furthermore, primers, probes targeting the genes for mecA-MRSA and mecC-5 MRSA, along with kits are provided that are designed for the detection of mecA/mecC-MRSA.
Claims21
1-25. (canceled)
A method of detecting mecA-containing methicillin-resistant Staphylococcus aureus (mecA-MRSA) in a sample, the method comprising:
- performing an amplifying step comprising contacting the sample with a forward primer comprising a nucleotide sequence of SEQ ID NO:
- 1, or a complement thereof, and a reverse primer comprising a nucleotide sequence of SEQ ID NO:
- 2, or a complement thereof, to produce an amplification product if mecA-MRSA is present in the sample;
- performing a hybridizing step comprising contacting the amplification product with one or more detectable mecA-MRSA probes wherein one of the one or more detectable mecA-MRSA probe comprises the sequence of SEQ ID NO:
- 3, or a complement thereof;
- and
- detecting the presence or absence of the amplified amplification product, wherein the presence of the amplified amplification product is indicative of the presence of mecA-MRSA in the sample and wherein the absence of the amplified amplification product is indicative of the absence of mecA-MRSA in the sample.
A method of detecting mecC-containing methicillin-resistant Staphylococcus aureus (mecC-MRSA) in a sample, the method comprising:
- performing an amplifying step comprising contacting the sample with a forward primer comprising a nucleotide sequence of SEQ ID NO:
- 4 or 5, or a complement thereof, and a reverse primer comprising a nucleotide sequence of SEQ ID NO:
- 6 to produce an amplification product if mecC-MRSA is present in the sample;
- performing a hybridizing step comprising contacting the amplification product with one or more detectable mecC-MRSA probes wherein one of the one or more detectable mecC-MRSA probe comprises the sequence of SEQ ID NO:
- 7, or a complement thereof;
- and
- detecting the presence or absence of the amplified amplification product, wherein the presence of the amplified amplification product is indicative of the presence of mecC-MRSA in the sample and wherein the absence of the amplified amplification product is indicative of the absence of mecC-MRSA in the sample.
A kit for detecting a nucleic acid of mecA-containing Staphylococcus aureus (mecA-MRSA) comprising:
- a first oligonucleotide comprising a sequence of SEQ ID NO:
- 1, or a complement thereof;
- a second oligonucleotide comprising a sequence of SEQ ID NO:
- 2, or a complement thereof;
- and
- a third detectably labeled oligonucleotide configured to hybridize to an amplicon generated by the first oligonucleotide and the second oligonucleotide, comprising SEQ ID NO:
- 3, or a complement thereof.
A kit for detecting a nucleic acid of mecC-containing Staphylococcus aureus (mecC-MRSA) comprising:
- a first oligonucleotide comprising a sequence selected from the group consisting of SEQ ID NOs:
- 4 and 5, or a complement thereof;
- a second oligonucleotide comprising a sequence of SEQ ID NO:
- 6, or a complement thereof;
- and
- a third detectably labeled oligonucleotide configured to hybridize to an amplicon generated by the first oligonucleotide and the second oligonucleotide, comprising SEQ ID NO:
- 7, or a complement thereof.
The kit of claim 44, wherein the third detectably labeled oligonucleotide comprises a donor fluorescent moiety and a corresponding acceptor fluorescent moiety, wherein the acceptor fluorescent moiety is a quencher.
The kit of claim 45, further comprising nucleoside triphosphates, nucleic acid polymerase, and buffers necessary for the function of the nucleic acid polymerase.
Dependencies are inferred from the claim text.