• 제목/요약/키워드: multiplex-PCR

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Multiplex PCR을 이용한 Extended-Spectrum β-Lactamase 생성 Escherichia coli와 Klebsiella pneumoniae의 Quinolone 내성 qnr유전자 검출 (Multiplex PCR for Detection of Quinolone Resistance qnr Genes in Extended-Spectrum β-Lactamase Producing Escherichia coli and Klebsiella pneumoniae)

  • 양병선
    • 대한임상검사과학회지
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    • 제39권3호
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    • pp.161-166
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    • 2007
  • To develop a rapid and reliable single-tube-based PCR technique for detection simultaneously the quinolone resistance qnrA, qnrB and qnrS genes. After multiple alignment, primers were designed to detect known qnr variants. I was used for A total of 43 extented-spectrum ${\beta}$-lactamases (ESBLs) producing Escherichia coli and Klebsiella pneumoniae isolated from university hospital were tested for screening, as with qnr genes. In optimized conditions, all positive controls confirmed the specificity of the PCR primers. Out of 43 isolates, qnrA genes were detected 19 (44.2%), qnrB genes 5 (11.7%), qnrS genes 15 (34.9%) and 8 (18.6%) isolates were not detected. I report here a fast and reliable technique for rapid screening of qnr positive strains to be used for epidemiological surveys.

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Development of a Multiplex RT-PCR for the Simultaneous Detection of Three Viruses in Cherry Plants

  • Park, Chung Youl;Park, Jeongran;Lee, Geunsik;Yi, Seung-In;Kim, Byeong Hoon;Eom, Jung Sik;Lee, Som Gyeol;Kim, Hongsup
    • 식물병연구
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    • 제24권3호
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    • pp.233-236
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    • 2018
  • A multiplex RT-PCR (mRT-PCR) assay was developed for the detection of the recently reported viruses, Cherry virus A (CVA), Little cherry virus 1 (LChV-1), and Little cherry virus 2 (LChV-2), in cherry plants in Korea. Eight sets of primers were designed for each virus and their specificity was tested by using various combinations of mixed primer sets. From the designed primer sets, one combination was selected and further evaluated to estimate the optimum temperature and detection limits of the mRT-PCR. A newly developed mRT-PCR assay was also tested using 20 cherry samples collected in the field. This mRT-PCR assay may be a useful tool for field surveys of diseases and the rapid detection of these three viruses in cherry plants.

흑한우와 한우 및 수입우를 판별하기 위한 multiplex PCR 기술 (PCR Technique for Determining Jeju Black Cattle, Hanwoo and Imported Beef)

  • 김찬수;고정문;차현철;박중국;정준
    • 생명과학회지
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    • 제24권8호
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    • pp.910-914
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    • 2014
  • 본 연구는 현행 한우확인시험법에 이용되는 Microsatellite (MS)와 소의 유전형질 중 품종 판별에 주로 이용되는 Melanocortin Receptor 1 (MC1R) 유전자상의 Single Nucleotide Polymorphism (SNP)를 분석하여 설계한 Primer를 Multiplex PCR을 활용하여 소의 품종을 판별하였다. MC1R 유전자형은 $E^D$, $E^+$, e형의 3Type으로 나뉘며 $E^D/E^D$, $E^D/E^+$, $E^D/e$, $E^+/E^+$, $E^+/e$, e/e의 6가지 유전자형을 가진다. $E^D$유전자형은 외래종이 지닌 유전자형으로 $E^D/E^D$, $E^D/E^+$, $E^D/e$이 이에 속하며, e유전자형은 한우가 지닌 유전자형으로 e/e의 유전자형을 가진다. 흑한우의 경우 $E^D$, $E^+$, e의 모든 유전자형을 가지고 있으나 이는 교잡에 의해 나타난 것으로 보이며 $E^+$유전자형이 흑한우 고유의 유전자형으로 추정되어 본 연구에서는 이에 따라 $E^+/E^+$, $E^+/e$의 유전자형을 흑한우로 분류하였다. 그러나 $E^D$, $E^+$의 경우 단순 PCR기법만으로는 그 판별에 어려움이 있어, MS Maker를 활용한 다형성 분석을 통해 흑한우와 수입우를 판별할 수 있는 새로운 Primer를 설계하였으며, 이를 통해 소의 품종을 판별하였다.

DNA 교차 오염 방지 기능을 가진 돼지 인플루엔자바이러스 감별진단용 one-step multiplex RT-PCR 진단법 (One step multiplex RT-PCR preventing DNA carryover contamination for differential diagnosis of swine influenza viruses)

  • 김희정;김은미;신연경;송재영;김성희;이경기;이명헌;김영화;박준철;여상건;박최규
    • 한국동물위생학회지
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    • 제37권4호
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    • pp.263-271
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    • 2014
  • In this study, we developed a cost and time saving one-step multiplex RT-PCR for the simultaneous detection and differentiation of swine influenza viruses (SIV) and 2009 pandemic influenza H1N1 virus (pH1N1). The one-step multiplex RT-PCR using four sets of primer was confirmed to be capable of detection of all SIV subtypes and differential diagnosis of major SIV subtype H1, H3 and pH1N1 on individual or mixed viral culture samples. The sensitivity of the multiplex RT-PCR was determined to be at least $2^{-6}$ $HA/25{\mu}L$ of the presented SIVs, providing sufficient efficacy for a routine SIV monitoring in diagnostic laboratories. In addition, compared with the conventional RT-PCR methods that cannot avoid the carryover DNA contamination, the developed RT-PCR applied with the uracil DNA glycosylase (UNG) system was proven to prevent a false positive reaction by carryover contamination of the pre-amplified DNA. In conclusion, the one-step RT-PCR with UNG system could be applicable to detect and differentiate of SIV from the viral cultures without worry of carryover DNA contamination in clinical laboratories.

Simultaneous Detection of Yersinia enterocolitica, Staphylococcus aureus, and Shigella spp. in Lettuce Using Multiplex PCR Method

  • Park Si-Hong;Kim Hyun-Joong;Kim Hae-Yeong
    • Journal of Microbiology and Biotechnology
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    • 제16권8호
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    • pp.1301-1305
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    • 2006
  • The development of rapid, infallible, and sensitive methods of detecting foodborne pathogens has received much impetus in recent years owing to an increased public awareness of the health hazards. For the rapid and simultaneous detection of these foodborne pathogens, a multiplex PCR method was developed. Yersinia enterocolitica, Staphylococcus aureus, and Shigella spp. are bacteria of concern because of their specific growing condition that enables them to live at low temperatures. In order to detect each pathogenic bacterium, specific primers from Y. enterocolitica, St. aureus, and Sh. flexneri were selected and validated successfully. To apply this method to food stored at low temperature, Y. enterocolitica, St. aureus, and Sh. flexneri were artificially inoculated in lettuce and incubated for enrichment. The multiplex PCR assays were able to simultaneously detect three pathogens, and the presence of three bands was observed at initial inoculation levels of approximately 1$\times$10$^1$ CFU/g in lettuce. Therefore, this method could be used for simultaneous detection of Y. enterocolitica, St. aureus, and Shigella spp. contaminated in lettuce during cultivation, transportation, preservation, and storage.

오미자 (五味子) 종 감별을 위한 RAPD 유래 SCAR Marker 및 Multiplex-PCR 기법 개발 (Development of RAPD-Derived SCAR Markers and Multiplex-PCR for Authentication of the Schisandrae Fructus)

  • 이영미;문병철;지윤의;서형석;김호경
    • 한국약용작물학회지
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    • 제21권3호
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    • pp.165-173
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    • 2013
  • The fruits of Schisandra chinensis have been used as an edible ingredient and traditional medicine in Korea. Due to morphological similarities of dried mature fruits, the correct identification of S. chinensis from other closely related Schisandrae species is very difficult. Therefore, molecular biological tools based on genetic analysis are required to identify authentic Schisandrae Fructus. Random amplifed polymorphic DNA (RAPD) and Sequence Characterized Amplified Region (SCAR) were used to develop an easy, reliable and reproducible method for the authentication of these four species. In this paper, we developed several RAPD-derived species specific SCAR markers and established a multiplex-PCR condition suitable to discriminate each species. These genetic markers will be useful to distinguish and authenticate Schisandrae Fructus and four medicinal plants, S. chinensis, S. sphenanthera, S. repanda and K. japonica, in species level.

Development of Species-Specific PCR Primers for the Rapid and Simultaneous Identification of the Six Species of Genus Takifugu

  • Dong, Chun Mae;Park, Yeon Jung;Noh, Jae Koo;Noh, Eun Soo;An, Cheul Min;Kang, Jung-Ha;Park, Jung Youn;Kim, Eun-Mi
    • 한국발생생물학회지:발생과생식
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    • 제23권4호
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    • pp.367-375
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    • 2019
  • Pufferfish (Takifugu spp.) are economically important edible marine fish. Mistakes in pufferfish classification can lead to poisoning; therefore, accurate species identification is critical. In this study, we used the mtDNA cytochrome c oxidase subunit I gene (COI) to design specific primers for six Takifugu species among the 21 domestic or imported pufferfish species legally sold for consumption in Korea. We rapidly and simultaneously identified these pufferfish species using a highly efficient, multiplex polymerase chain reaction (PCR) system with the six species-specific primers. The results showed that species-specific multiplex PCR (multiplex species-specific polymerase chain reaction; MSS-PCR) either specifically amplified PCR products of a unique size or failed. MSS-PCR yielded amplification fragment lengths of 897 bp for Takifugu pardalis, 822 bp for T. porphyreus, 667 bp for T. niphobles, 454 bp for T. poecilonotus, 366 bp for T. rubripes, and 230 bp for T. xanthpterus using the species-specific primers and a control primer (ca. 1,200 bp). We visualized the results using agarose gel electrophoresis to obtain accurate contrasts of the six Takifugu species. MSS-PCR analysis is easily performed and provides identification results within 6 h. This technique is a powerful tool for the discrimination of Takifugu species and will help prevent falsified labeling, protect consumer rights, and reduce the risk of pufferfish poisoning..

국내에서 유통되는 8종의 식육감별을 위한 multiplex PCR법 개발 (Development of Multiplex PCR Assay for Identification of Eight Species from Meats in Korea)

  • 허은정;고은경;윤향진;김연화;김영조;박현정;위성환;문진산
    • 한국식품위생안전성학회지
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    • 제31권1호
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    • pp.28-35
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    • 2016
  • 본 연구에서는 국내 대표 식육인 소, 돼지, 닭, 오리의 4종 식육과 염소, 양, 말, 칠면조의 4종 식육을 동시에 신속하게 감별할 수 있는 2 set의 multiplex PCR법을 개발하고자 미토콘드리아 16S RNA에서 종 특이부위를 선발하고 각 종에 대한 특이도를 높이기 위하여 인위적인 미스매치를 주어 프라이머를 제작한 후 8종 식육의 274개 시료를 대상으로 특이도와 민감도를 조사하였다. 그 결과 소, 돼지, 닭, 오리 모든 시료에서 각각 279, 94, 192, 477 bp의 증폭산물이, 말, 양, 염소, 칠면조의 모든 시료에서 각각 152 bp, 271 bp, 670 bp, 469 bp에서 뚜렷한 PCR 유전자 산물이 확인되어 모든 축종에서 100%의 특이도를 나타내어 축종별 감별력이 우수한 것으로 나타났다. 8종의 축종별로 DNA를 $10ng/{\mu}l$으로 정량한 후 혼합물을 10배씩 단계 희석하여 반응여부를 조사한 결과, 소, 돼지, 오리에서는 100 fg까지, 닭에서는 1 pg까지 검출됨을 확인할 수 있었다. 소, 돼지, 닭, 오리고기를 99.9%, 99%, 90%, 70%, 50%, 30%, 10%, 1%, 0.1%의 비율로 혼합한 식육과 $83^{\circ}C$ 20분, $100^{\circ}C$ 30분, $121^{\circ}C$ 10분에서 각각 열처리한 가열 혼합육에 대하여 검출한계를 조사한 결과 마지막 단계의 희석 비율인 모든 혼합육의 0.1%에서 검출이 가능하였으며, 열처리 혼합육에서는 닭에서는 1% 농도에서 소와 돼지의 혼합육에서 0.1% 농도에서 검출되어 민감도가 높음을 확인할 수 있었다. 본 연구에서 개발된 multiplex PCR법은 특이도 및 민감도에 있어서 국내 대표 식육을 감별하는데 있어서 유용한 것으로 평가된다.