Method of detecting vibrio parahaemolyticus via real-time PCR-hybridization

• US 20090226895A1
• Filed: 09/04/2007
• Published: 09/10/2009
• Est. Priority Date: 06/15/2007
• Status: Abandoned Application

• Current Assignee: Hong Kong Polytechnic University
• Original Assignee: Hong Kong Polytechnic University
• Inventors: Yip, Shea Ping, To, Shing Shun Tony, Lo, Lek Hang Constance, Leung, Hang Mei Polly
• Application Number:
  US11/896,499
• Publication Number:
  US 20090226895A1
• Time in Patent Office: Days
• US Class Current: 435/6
• CPC Class Codes: C12Q 1/689 for bacteria
• CPC Class Codes: C12Q 2531/113 PCR
• CPC Class Codes: C12Q 2561/113 Real time assay
• CPC Class Codes: Y02A 50/30 Against vector-borne diseases, e.g. mosquito-borne, fly-borne, tick-borne or waterborne diseases whose impact is exacerbated by climate change

Abstract

The present invention relates to an assay and methods for determining the presence of pathogenic V. parahaemolyticus in a sample. Determination should be made by detector. Via the assay, rapid, real-time detection of V. parahaemolyticus is possible.

Claims

1. A method of detecting Vibrio parahaemolyticus, comprising the steps of:

obtaining a sample,

preparing sample for inclusion into assay,

running real-time PCR, and

detecting toxR gene and tdh2 gene,

wherein running real-time PCR uses an assay having two pairs of oligonucleotide primers and two pairs of probes.

2. The method of detecting Vibrio parahaemolyticus of claim 1, wherein said probes are labeled on the 3′

end with a fluorophore.

3. The method of detecting Vibrio parahaemolyticus of claim 1, wherein the 5′

end of said toxR gene and said tdh2 gene are labeled with a colorant.

4. The method of detecting Vibrio parahaemolyticus of claim 2, wherein said fluorophore is a fluorescein or derivative thereof.

5. The method of detecting Vibrio parahaemolyticus of claim 2, wherein said probes comprise SEQ ID NO. 3, SEQ ID NO. 4, SEQ ID NO. 7, and SEQ ID NO. 8.

6. The method of detecting Vibrio parahaemolyticus of claim 1, wherein said primers are selected from the group consisting of SEQ ID NO. 1, SEQ ID NO. 2, SEQ ID NO. 5, and SEQ ID NO. 6.

7. The method of detecting Vibrio parahaemolyticus of claim 1, wherein said sample is stool.

8. The method of detecting Vibrio parahaemolyticus of claim 1, wherein running real-time PCR occurs on a detection device.

9. An assay for rapid detection of Vibrio parahaemolyticus comprising two pairs of oligonucleotide primers selected from the group consisting of SEQ ID NO. 1, SEQ ID NO. 2, SEQ ID NO. 5, and SEQ ID NO. 6, and two probes consisting of SEQ ID NO. 3, SEQ ID NO. 4, SEQ ID NO. 7, and SEQ ID NO. 8.

10. The assay for rapid detection of Vibrio parahaemolyticus of claim 9, further comprising one or more reagents selected from buffers cations, serum, polymerases, deoxynucleoside triphosphates, and water.