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Journal of Clinical Microbiology, October 2006, p. 3544-3550, Vol. 44, No. 10
0095-1137/06/$08.00+0     doi:10.1128/JCM.00633-06
Copyright © 2006, American Society for Microbiology. All Rights Reserved.

Use of PCR and Reverse Line Blot Hybridization Macroarray Based on 16S-23S rRNA Gene Internal Transcribed Spacer Sequences for Rapid Identification of 34 Mycobacterium Species

Likuan Xiong,1,2 Fanrong Kong,1 Yingzhou Yang,2 Jinquan Cheng,2 and Gwendolyn L. Gilbert1*

Centre for Infectious Diseases and Microbiology, Institute of Clinical Pathology and Medical Research, Westmead, and University of Sydney, Sydney, NSW 2145, Australia,1 Institute of Tuberculosis, Center for Prevention and Control of Sexually Transmitted Disease, Shenzhen Chronic Disease Hospital, Shenzhen 518020, Guangdong Province, People's Republic of China2

Received 24 March 2006/ Returned for modification 11 May 2006/ Accepted 22 July 2006

The aim of this study was to develop a PCR and reverse line blot hybridization (PCR-RLB) macroarray assay based on 16S-23S rRNA gene internal transcribed spacer sequences for the identification and differentiation of 34 mycobacterial species or subspecies. The performance of the PCR-RLB assay was assessed and validated by using 78 reference strains belonging to 55 Mycobacterium species, 219 clinical isolates which had been identified as mycobacteria by high-performance liquid chromatography or gas chromatography, three skin biopsy specimens from patients with suspected leprosy which had been shown to contain acid-fast bacilli, and isolates of 14 nonmycobacterial species. All mycobacteria were amplified in the PCR and hybridized with a genus-specific probe (probe MYC). The 34 species-specific probes designed in this study hybridized only with the corresponding Mycobacterium species. The mycobacterial PCR-RLB assay is an efficient tool for the identification of clinical isolates of mycobacteria; it can reliably identify mixed mycobacterial cultures and M. leprae in skin biopsy specimens.

* Corresponding author. Mailing address: Centre for Infectious Diseases and Microbiology (CIDM), Institute of Clinical Pathology and Medical Research (ICPMR), Westmead Hospital, Darcy Rd., Westmead, New South Wales 2145, Australia. Phone: (612) 9845 6255. Fax: (612) 9893 8659. E-mail: lyng{at}icpmr.wsahs.nsw.gov.au.

Journal of Clinical Microbiology, October 2006, p. 3544-3550, Vol. 44, No. 10
0095-1137/06/$08.00+0     doi:10.1128/JCM.00633-06
Copyright © 2006, American Society for Microbiology. All Rights Reserved.



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