4.6 Article

Evaluation of the Roche MagNA Pure 96 nucleic acid extraction platform for the SPF10 line probe assay system

Journal

JOURNAL OF APPLIED MICROBIOLOGY
Volume 134, Issue 8, Pages -

Publisher

OXFORD UNIV PRESS
DOI: 10.1093/jambio/lxad151

Keywords

human papillomavirus; cervical cancer; DNA extraction; MagNA Pure 96 System

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This study evaluated the MP96 nucleic acid extraction system as an alternative for cervical specimen processing for HPV genotyping detection, compared to the MPLC system. The results showed a high degree of concordance between the two extraction methods in HPV genotyping.
Objective To evaluate the MagNA Pure 96 (MP96) nucleic acid extraction system as an alternative for cervical specimen processing for human papillomavirus (HPV) genotyping detection by reverse hybridization line probe assay (LiPA-25), compared to the well-established extraction system MagNA Pure LC 2.0 (MPLC). Methods and results A total of 200 cervical samples preserved in ThinPrepCyt(& REG;) solution were extracted by MP96 and MPLC, respectively, and then purified nucleic acids were amplified using the SPF10 PCR primer set. Amplification products were subjected to SPF10-DNA enzyme immunoassay (DEIA) and LiPA-25. The concordance between different extraction methods in this study was reflected in the comparison of the results of the DEIA and LiPA-25. Agreement of HPV-positive results (DEIA) was 97.5% (Kappa = 0.932). Pair-wise analyses of either HPV grouping (any HPV genotypes, any high-risk HPV genotypes, any low-risk HPV genotypes, any nonavalent vaccine-targeted HPV, and any non-vaccine-targeted oncogenic HPV genotypes) identified >95% agreement (all Kappa > 0.900). For the two extraction methods, there was no statistical difference (chi-square test: P = 0.690) for single versus multiple genotypes, and concordant, compatible, and discordant genotypes were observed in 87.0%, 9.5%, and 3.5% of 200 samples, respectively. Conclusion HPV genotyping results of the MPLC system and the MP96 system showed a high degree of concordance. Combined with the advantages of high-throughput and anti-contamination of MP96, the MP96 extraction system could be more suitable for the testing of samples in future studies.

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