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1 Department of Pharmaceutical Sciences;
2
Department of Clinical and Experimental Medicine, Division of Microbiology; and
3
Institute of Chemical Sciences, University of Bologna, 40126 Bologna, Italy.
aAddress correspondence to this author at: Department of Pharmaceutical Sciences, University of Bologna, via Belmeloro 6, 40126 Bologna, Italy. Fax 39-051-343398; e-mail roda{at}alma.unibo.it.
Background: To allow multianalyte binding assays, we have developed a novel polystyrene microtiter plate containing 24 main wells, each divided into 7 subwells. We explored its clinical potential by developing a PCR-chemiluminescent immunoassay (PCR-CLEIA) for simultaneous detection and typing of seven high oncogenic risk human papillomavirus (HPV) DNAs in one well.
Methods: Seven different oligonucleotide probes, each specific for a high-risk HPV genotype, were separately immobilized in the subwells. Subsequently, a digoxigenin-labeled consensus PCR amplification product was added to the main well. The PCR product hybridized to the immobilized probe corresponding to its genotype and was subsequently detected by use of a peroxidase-labeled anti-digoxigenin antibody and chemiluminescence imaging with an ultrasensitive charge-coupled device camera. Results obtained for 50 cytologic samples were compared with those obtained with a conventional colorimetric PCR-ELISA.
Results: The method was specific and allowed detection of 50 genome copies of HPV 16, 18, 33, and 58, and 100 genome copies of HPV 31, 35, and 45. Intra- and interassay CVs for the method were 5.6% and 7.9%, respectively. All results obtained for clinical samples were confirmed by the conventional PCR-ELISA.
Conclusions: PCR-CLEIA allows rapid, single-tube simultaneous detection and typing of seven high-risk HPV DNAs with small reagent volumes. The principle appears applicable to the development of other single-tube panels of tests.
The following articles in journals at HighWire Press have cited this article:
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M. Magliulo, B. Roda, A. Zattoni, E. Michelini, M. Luciani, R. Lelli, P. Reschiglian, and A. Roda An innovative, flow-assisted, noncompetitive chemiluminescent immunoassay for the detection of pathogenic bacteria. Clin. Chem., November 1, 2006; 52(11): 2151 - 2155. [Full Text] [PDF] |
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J. Wallace, B. A. Woda, and G. Pihan Facile, Comprehensive, High-Throughput Genotyping of Human Genital Papillomaviruses Using Spectrally Addressable Liquid Bead Microarrays J. Mol. Diagn., February 1, 2005; 7(1): 72 - 80. [Abstract] [Full Text] [PDF] |
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