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Journal of Clinical Microbiology, September 2003, p. 4465-4467, Vol. 41, No. 9
0095-1137/03/$08.00+0 DOI: 10.1128/JCM.41.9.4465-4467.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.
Use of Multiplex PCR To Identify Staphylococcus aureus Adhesins Involved in Human Hematogenous Infections
Anne Tristan,1 Liu Ying,2 Michele Bes,1 Jerome Etienne,1 Francois Vandenesch,1 and Gerard Lina1*
Centre National de Référence des Staphylocoques, INSERM E0230, IFR62 Laennec, 69372 Lyon Cédex 08, France,1
Department of Clinical Laboratory, Xinhua Hospital, Shanghai 200092, China2
Received 23 March 2003/
Returned for modification 17 May 2003/
Accepted 3 June 2003

ABSTRACT
We have developed a multiplex PCR procedure to determine the
distribution of nine adhesin genes in
Staphylococcus aureus isolates. Only genes encoding bone sialoprotein binding protein
and fibronectin binding protein B were significantly associated
with hematogenous osteomyelitis/arthritis and native-valve endocarditis,
respectively, suggesting their involvement in hematogenous tissue
infections.

TEXT
Staphylococcus aureus is both a commensal and an extremely versatile
pathogen. It causes superficial lesions, deep-seated and systemic
infections, and toxemic syndromes (
10). With the exception of
toxemic syndromes, which are directly due to toxin production,
S. aureus pathogenesis results from the combined action of a
variety of factors (
1,
17).
S. aureus infection begins with
bacterial adhesion to host tissues.
S. aureus adhesins are grouped
into a single family named microbial surface components recognizing
adhesive matrix molecules (MSCRAMMs) (
5). MSCRAMM involvement
in
S. aureus pathogenicity in human beings is poorly documented.
Results obtained in experimental models suggest that
S. aureus strains that specifically express receptors for fibrinogen and
fibronectin are associated with infective endocarditis, while
strains that produce receptors for bone sialoprotein, collagen,
and fibronectin are associated with osteomyelitis and arthritis
(
2,
3,
9,
18,
20,
21,
23). However, these associations have
not been confirmed in all relevant studies.
Staphylococcal MSCRAMMs can be detected with binding assays using purified matrix molecules (11), but several adhesins are redundant. For example, there are two fibronectin binding proteins (FnbpA and -B) and three receptors for fibrinogen (clumping factors A and B [ClfA and -B] and fibrinogen binding protein [Fib]). In addition, some MSCRAMMs bind to more than one matrix molecule (for example, FnbpA binds to both fibronectin and fibrinogen) (22). Finally, binding assays are expensive, owing to the high cost of purified matrix molecules. PCR has been used to detect staphylococcal adhesin genes (12, 13, 16), but multiplex PCR technology has not yet been used to study adhesin distribution in S. aureus isolates of various origins. We therefore developed a multiplex PCR procedure to examine the distribution of nine MSCRAMM genes in S. aureus isolates from patients with nasal colonization and with invasive infections associated with hematogenous seeding.
The nucleotide sequences of ebpS (encoding elastin binding protein), eno (encoding laminin binding protein), cna (encoding collagen binding protein), fnbA and fnbB (encoding fibronectin binding proteins A and B), fib (encoding fibrinogen binding protein), clfA and clfB (encoding clumping factors A and B), and bbp (encoding bone sialoprotein binding protein) obtained from GenBank (accession numbers U48826, AF065394, M81736, X95848, X62992, X72014, Z18852, AJ224764, and Y18653, respectively) were compared and evaluated by using Blast and ClustalX softwares to identify regions unique to each gene, with similar annealing temperatures. Genomic DNA was extracted from staphylococcal cultures (2) and used as an amplification template with the primers (Eurogentec, Seraing, Belgium) described in Table 1 in both simplex and multiplex PCRs. Two primer sets were prepared for multiplex PCR: PCR1 to amplify bbp, cna, ebpS, and eno and PCR2 to amplify fnbA, fnbB, fib, clfA, and clfB. The thermal cycling conditions included an initial denaturation step (5 min at 94°C) followed by 25 cycles of amplification (denaturation for 1 min at 94°C, annealing for 1 min at 55°C, and extension for 1 min at 72°C). The reaction was terminated with a 10-min incubation step at 72°C. PCR products were analyzed by electrophoresis through 1% agarose gels (Sigma, Saint Quentin Fallavier, France).
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TABLE 1. Nucleotide sequences and anticipated amplicon sizes for the S. aureus gene-specific oligonucleotide primers used in this studya
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A subset of 157
S. aureus isolates, identified as
S. aureus by their abilities to coagulate citrated rabbit plasma and to
produce a clumping factor, were selected for PCRs. These strains
were collected from nose swabs of asymptomatic carriers or from
clinical specimens of patients with native-valve endocarditis
or hematogenous osteomyelitis and/or arthritis (
7,
8); types
of infection were defined in accordance with published criteria
(
4,
6).
We first examined the specificity of the newly designed primers by means of simplex PCRs. As no control strains were available for the nine genes, we randomly selected 17 S. aureus strains and tested each with the nine simplex PCRs. All amplicons were consistent with the predicted sizes (Table 1). Two randomly selected amplicons from each of the nine simplex PCRs were subjected to DNA sequencing to confirm their specificity and were 98 to 100% identical to the corresponding GenBank sequences. The 17 strains of S. aureus tested by simplex PCR were then tested by multiplex PCR and yielded the expected band patterns; no discrepancies between the two methods were observed.
All 157 clinical isolates tested by multiplex PCR were positive for eno and clfB. The other MSCRAMM genes were heterogeneously detected: 99% of the strains were positive for clfA, 80% were positive for fib, 58% were positive for ebpS, 43% were positive for fnbB, 36% were positive for cna, 28% were positive for fnbA, and 22% were positive for bbp (Table 2). One isolate was positive for eight of the nine MSCRAMM genes, 20 isolates were positive for seven genes, 67 were positive for six genes, 63 were positive for five genes, 5 were positive for four genes, and 1 was positive for three genes (median, six genes per isolate). Eighty-six of the 157 isolates harbored none of the fibronectin binding protein genes, while all of the isolates harbored at least two of the three fibrinogen receptor genes (fib, clfaA, and clfB). The minimal MSCRAMM gene equipment in this panel of 157 isolates comprised two genes encoding fibrinogen receptor (including clumping factor B in all strains) and the gene encoding laminin binding protein. This confirms previous reports that most S. aureus isolates harbor functionally redundant MSCRAMMs (16).
The MSCRAMM gene distribution did not differ between isolates
associated with nasal colonization and those associated with
invasive infections (endocarditis and osteomyelitis/arthritis;
P > 0.05 for each gene comparison [chi square test]; Table
2). In contrast, two MSCRAMM genes were significantly associated
with specific invasive infections:
bbp was associated more with
osteomyelitis/arthritis than with endocarditis (38 versus 11%;
odds ratio = 5.2;
P = 0.006), and
fnbB was associated more with
endocarditis than with osteomyelitis/arthritis (55 versus 32%;
odds ratio = 0.4;
P = 0.046) (Table
2). Previous studies have
shown that strains expressing receptors for bone sialoprotein
are associated with osteomyelitis and arthritis (
19) and that
strains bearing receptors for fibronectin (but not specifically
FnbB) are associated with infective endocarditis (
18). However,
in our study, not all of the isolates associated with osteoarthritis
and endocarditis harbored the
bbp or
fnbB gene, respectively
(Table
2). Thus, in addition to possible host factors, this
tropism of
S. aureus may involve additional MSCRAMMs, such as
receptors for fibrinogen (in endocarditis) and for fibronectin
and/or collagen (in osteomyelitis and arthritis) or other virulence
factors involved in bacterial persistence at the site of infection
after tissue binding (
3,
15,
21,
23). Indeed, inactivation of
a single MSCRAMM gene is not sufficient to abolish strain virulence
in an experimental model of hematogenous
S. aureus infections
(
14,
15,
21). Combined investigation of MSCRAMM and toxin gene
distribution in
S. aureus isolates would permit better understanding
of the complex process of tissue seeding during bacteremia.

ACKNOWLEDGMENTS
We are grateful to N. Violland, C. Courtier, and C. Gardon for
technical assistance and to D. Young for editing the manuscript.

FOOTNOTES
* Corresponding author. Mailing address: INSERM E0230, IFR62 Laennec, Rue Guillaume Paradin, 69372 Lyon Cédex 08, France. Phone: 33 478 77 86 57. Fax: 33 478 77 86 58. E-mail:
geralina{at}univ-lyon1.fr.


REFERENCES
1 - Arbuthnott, J. P., D. C. Coleman, and J. S. de Azavedo. 1990. Staphylococcal toxins in human disease. J. Appl. Bacteriol. Symp. Suppl. 19:101S-107S.
2 - Ausubel, F. M., R. Brent, R. E. Kingston, B. D. Moore, J. G. Seidman, J. A. Smith, and K. Struhl. 1987. Current protocols in molecular biology. Greene Publishing Associates and Wiley Interscience, New York, N.Y.
3 - Cheung, A. L., C. Wolf, M. R. Yeaman, and A. S. Bayer. 1995. Insertional inactivation of a chromosomal locus that modulates expression of potential virulence determinants in Staphylococcus aureus. J. Bacteriol. 177:3220-3226.[Abstract/Free Full Text]
4 - Durack, D. T., A. S. Lukes, and D. K. Bright. 1994. New criteria for diagnosis of infective endocarditis: utilization of specific echocardiographic findings. Am. J. Med. 96:200-209.[CrossRef][Medline]
5 - Foster, T. J., and M. Hook. 1998. Surface protein adhesins of Staphylococcus aureus. Trends Microbiol. 12:484-488.
6 - Gentry, L. G. 1997. Osteomyelitis and other infections of bones and joints, p. 455-492. In K. B. Crossley and G. L. Archer (ed.), The staphylococci in human diseases. Churchill Livingstone, Inc., New York, N.Y.
7 - Jarraud, S., C. Mougel, J. Thioulouse, G. Lina, H. Meugnier, F. Forey, X. Nesme, J. Etienne, and F. Vandenesch. 2002. Relationships between Staphylococcus aureus genetic background, virulence factors, agr groups (alleles), and human disease. Infect. Immun. 70:631-641.[Abstract/Free Full Text]
8 - Jarraud, S., M. A. Peyrat, A. Lim, A. Tristan, M. Bes, C. Mougel, J. Etienne, F. Vandenesch, M. Bonneville, and G. Lina. 2001. egc, a highly prevalent operon of enterotoxin gene, forms a putative nursery of superantigens in Staphylococcus aureus. J. Immunol. 166:669-677.[Abstract/Free Full Text]
9 - Johansson, A., J. I. Flock, and O. Svensson. 2001. Collagen and fibronectin binding in experimental staphylococcal osteomyelitis. Clin. Orthop. 382:241-246.
10 - Lowy, F. D. 1998. Staphylococcus aureus infections. N. Engl. J. Med. 339:520-532.[Free Full Text]
11 - McGavin, M. H., D. Krajewska-Pietrasik, C. Ryden, and M. Hook. 1993. Identification of a Staphylococcus aureus extracellular matrix-binding protein with broad specificity. Infect. Immun. 61:2479-2485.[Abstract/Free Full Text]
12 - Minhas, T., H. A. Ludlam, M. Wilks, and S. Tabaqchali. 1995. Detection by PCR and analysis of the distribution of a fibronectin-binding protein gene (fbn) among staphylococcal isolates. J. Med. Microbiol. 42:96-101.[Abstract/Free Full Text]
13 - Montanaro, L., C. R. Arciola, E. Borsetti, M. Brigotti, and L. Baldassarri. 1998. A polymerase chain reaction (PCR) method for the identification of collagen adhesin gene (cna) in Staphylococcus-induced prosthesis infections. New Microbiol. 21:359-363.[Medline]
14 - Moreillon, P., J. M. Entenza, P. Francioli, D. McDevitt, T. J. Foster, P. Francois, and P. Vaudaux. 1995. Role of Staphylococcus aureus coagulase and clumping factor in pathogenesis of experimental endocarditis. Infect. Immun. 63:4738-4743.[Abstract]
15 - Patti, J. M., J. O. Boles, and M. Hook. 1993. Identification and biochemical characterization of the ligand binding domain of the collagen adhesion from Staphylococcus aureus. Biochemistry 32:11428-11435.[CrossRef][Medline]
16 - Peacock, S. J., C. E. Moore, A. Justice, M. Kantzanou, L. Story, K. Mackie, G. O'Neill, and N. P. Day. 2002. Virulent combinations of adhesin and toxin genes in natural populations of Staphylococcus aureus. Infect. Immun. 70:4987-4996.[Abstract/Free Full Text]
17 - Projan, S. J., and R. P. Novick. 1997. The molecular basis of pathogenicity, p. 55-82. In K. B. Crossley and G. L. Archer (ed.), The staphylococci in human diseases. Churchill Livingstone, Inc., New York, N.Y.
18 - Que, Y. A., P. Francois, J. A. Haefliger, J. M. Entenza, P. Vaudaux, and P. Moreillon. 2001. Reassessing the role of Staphylococcus aureus clumping factor and fibronectin-binding protein by expression in Lactococcus lactis. Infect. Immun. 69:6296-6302.[Abstract/Free Full Text]
19 - Ryden, C., I. Maxe, A. Franzen, A. Ljungh, D. Heinegard, and K. Rubin. 1987. Selective binding of bone matrix sialoprotein to Staphylococcus aureus in osteomyelitis. Lancet 8557:515.
20 - Tung, H., B. Guss, U. Hellman, L. Persson, K. Rubin, and C. Ryden. 2000. A bone sialoprotein-binding protein from Staphylococcus aureus: a member of the staphylococcal Sdr family. Biochem. J. 345:611-619.
21 - Vaudaux, P. E., P. Francois, R. A. Proctor, D. McDevitt, T. J. Foster, R. M. Albrecht, D. P. Lew, H. Wabers, and S. L. Cooper. 1995. Use of adhesion-defective mutants of Staphylococcus aureus to define the role of specific plasma proteins in promoting bacterial adhesion to canine arteriovenous shunts. Infect. Immun. 63:585-590.[Abstract]
22 - Wann, E. R., S. Gurusiddappa, and M. Hook. 2000. The fibronectin-binding MSCRAMM FnbpA of Staphylococcus aureus is a bifunctional protein that also binds to fibrinogen. J. Biol. Chem. 275:13863-13871.[Abstract/Free Full Text]
23 - Williams, R. J., B. Henderson, and S. P. Nair. 2002. Staphylococcus aureus fibronectin binding proteins A and B possess a second fibronectin binding region that may have biological relevance to bone tissues. Calcif. Tissue Int. 70:416-421.[CrossRef][Medline]
Journal of Clinical Microbiology, September 2003, p. 4465-4467, Vol. 41, No. 9
0095-1137/03/$08.00+0 DOI: 10.1128/JCM.41.9.4465-4467.2003
Copyright © 2003, American Society for Microbiology. All Rights Reserved.
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