Journal of Microbiology

Research Support, Non-U.S. Gov'ts

NOTE] Development of Porphyromonas gingivalis-Specific Quantitative Real-Time PCR Primers Based on the Nucleotide Sequence of rpoB: Soon-Nang Park , Jae-Yoon Park , Joong-Ki Kook; J. Microbiol. 2011;49(2):315-319. Published online May 3, 2011; DOI: https://doi.org/10.1007/s12275-011-1028-y

Abstract: Species-specific quantitative real-time PCR (qPCR) primers were developed for the detection of Porphyromonas gingivalis. These primers, Pg-F/Pg-R, were designed based on the nucleotide sequences of RNA polymerase β-subunit gene (rpoB). Species-specific amplicons were obtained from the tested P. gingivalis strains but not in any of the other strains (46 strains of 46 species). The qPCR primers could detect as little as 4 fg of P. gingivalis chromosomal DNA. These findings suggest that these qPCR primers are suitable for applications in epidemiological studies.

Identification of Actinobacillus actinomycetemcomitans Using Species-Specific 16S rDNA Primers: Su-Gwan Kim , Soo-Heung Kim , Mi-Kwang Kim , Hwa-Sook Kim , Joong-Ki Kook; J. Microbiol. 2005;43(2):209-212.; DOI: https://doi.org/2159 [pii]

Abstract: The purpose of this study was to develop species-specific PCR primers for use in the identification and detection of Actinobacillus actinomycetemcomitans. These primers target variable regions of the 16S ribosomal RNA coding gene (rDNA). We assessed the specificity of the primers against 9 A. actinomycetemcomitans strains and 11 strains (3 species) of the Haemophilus genus. Primer sensitivity was determined by testing serial dilutions of the purified genomic DNAs of A. actinomycetemcomitans ATCC 33384^T. Our obtained data revealed that we had obtained species-specific amplicons for all of the tested A. actinomycetemcomitans strains, and that none of these amplicons occurred in any of the other species. Our PCR protocol proved able to detect as little as 4 fg of A. actinomycetemcomitans chromosomal DNA. Our findings suggest that these PCR primers are incredibly sensitive, and should prove suitable for application in epidemiological studies, as well as the diagnosis and monitoring of periodontal pathogens after treatment for periodontitis.

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