PCR FOR MRSA SCCMEC TYPING

• US 20060252069A1
• Filed: 04/21/2006
• Published: 11/09/2006
• Est. Priority Date: 04/21/2005
• Status: Abandoned Application

• Current Assignee: UTI Limited Partnership
• Original Assignee: UTI Limited Partnership
• Inventors: CONLY, John, ZHANG, Kunyan
• Application Number:
  US11/379,676
• Publication Number:
  US 20060252069A1
• Time in Patent Office: Days
• US Class Current: 435/6
• CPC Class Codes: C12Q 1/689 for bacteria
• CPC Class Codes: C12Q 2600/156 Polymorphic or mutational markers
• CPC Class Codes: C12Q 2600/16 Primer sets for multiplex assays
• CPC Class Codes: G01N 33/56938 Staphylococcus

Abstract

A multiplex PCR assay for the detection, identification and classification of SCCmec types and sub-types of Staphylococcal aureus has been described.

Claims

1. A multiplex PCR SCCmec typing assay for Staphylococcus aureus SCCmec types I, II, III, subtypes IVa, IVb, IVc, IVd and V, and MRSA and MSSA, comprising the steps of:

(a) obtaining an isolate of a sample of S. aureus;

(b) amplifying a loci unique to each type and subtype by a PCR technique using amplification primers selective for each of said loci; and

(c) detecting the PCR amplicons, and determining the type and subtype of the S. aureus isolate.

2. The assay of claim 1, wherein the amplification primers comprises one or both of each of the following primer pairs:

SEQ ID NO 1 and 2, SEQ ID NO 3 and 4, SEQ ID NO 5 and 6, SEQ ID NO 7 and 8, SEQ ID NO 9 and 10, SEQ ID NO 11 and 12, SEQ ID NO 13 and 14, SEQ ID NO 15 and 16, and SEQ ID NO 17 and 18.

3. The assay of claim 1 or 2 further comprising amplification primers selective for the mec gene complex and the ccr gene complex.

4. The assay of claim 3 wherein the mec gene complex amplification primers comprises one or more of SEQ ID NO 19-22 and the ccr gene complex amplification primers comprises one or more of SEQ ID NO 23-28.

5. The assay of claim 1 wherein the loci unique to each type and subtype comprises:

ORF E008 of strain NCTC10442 (AB033763), kdpE of strain N315 (D86934), ORF CZ049 of strain 85/2082 (AB37671), ORF CQ002 of strain CA05 (AB063172), ORF CM001 of strain 8/6-3P (AB063173), ORF CR002 of strain MR108 (AB096217), ORF CG001 of strain JCSC4469 (AB097677), ORF V011 of strain JCSC3624 (AB12121), mecA—

mecA gene of strain NCTC8325 (X52593), mecI—

of strain N3 15, IS 1272 and mecR1-R—

of strain CA05, ccrC—

of strain JSCS 3624.

6. A multiplex PCR SCCmec typing assay kit for Staphylococcus aureus SCCmec types I, II, III, subtypes IVa, IVb, IVc, IVd, and V, and MRSA and MSSA, said kit comprising one or both of each of the following primer pairs:

SEQ ID NO 1 and 2, SEQ ID NO 3 and 4, SEQ ID NO 5 and 6, SEQ ID NO 7 and 8, SEQ ID NO 9 and 10, SEQ ID NO 11 and 12, SEQ ID NO 13 and 14, SEQ ID NO 15 and 16, and SEQ ID NO 17 and 18.

7. The kit of claim 6 further comprising amplification primers selective for the mec gene complex and the ccr gene complex.

8. The kit of claim 7 wherein the mec gene complex amplification primers comprises one or more of SEQ ID NO 19-22 and the ccr gene complex amplification primers comprises one or more of SEQ ID NO 23-28.