• 제목/요약/키워드: Multiplex species-specific

검색결과 73건 처리시간 0.031초

Molecular Authentication of Morus Folium Using Mitochondrial nad7 Intron 2 Region

  • Jin, Chi-Gyu;Kim, Min-Kyeung;Kim, Jin-Young;Sun, Myung-Suk;Kwon, Woo-Saeng;Yang, Deok-Chun
    • 한국자원식물학회지
    • /
    • 제26권3호
    • /
    • pp.397-402
    • /
    • 2013
  • Morus Folium (Sang-yeop in Korean) is one of the most important Oriental medicinal plants. In Korea, both M. alba and M. cathayana are regarded as the botanical sources for Morus Folium. In order to discriminate M. alba and M. cathayana from their adulterant, M. tricuspidata, mitochondrial NADH dehydrogenase subunit 7 (nad7) intron 2 region was targeted for molecular analysis with universal primers. DNA polymorphisms, including SNP sites, insertions, and deletions, were detected among these three species sequencing data. Based on these DNA polymorphisms, specific primers were designed for the three species respectively. Multiplex PCR was conducted for molecular authentication of M. alba, M. cathayana, and M. tricuspidata with specific primers. The present results indicate that it is possible to identify Morus Folium from its adulterant using mitochondrial nad7 intron 2 region. The established multiplex-PCR system was proved to be effective for identification of Morus Folium. The results indicate that mitochondrial introns can be used for inter-specific polymorphic study, and the described method can be applied for molecular identification of medicinal materials.

Rapid Identification of Lactobacillus and Bifidobacterium in Probiotic Products Using Multiplex PCR

  • Sul, Su-Yeon;Kim, Hyun-Joong;Kim, Tae-Woon;Kim, Hae-Yeong
    • Journal of Microbiology and Biotechnology
    • /
    • 제17권3호
    • /
    • pp.490-495
    • /
    • 2007
  • Lactic acid bacteria (LAB) are beneficial for the gastrointestinal tract and reinforce immunity in human health. Recently, many functional products using the lactic acid bacteria have been developed. Among these LAB, Lactobacillus acidophilus, Lactobacillus rhamnosus, Bifidobacterium longum, and Bifidobacterium bifidum are frequently used for probiotic products. In order to monitor these LAB in commercial probiotic products, a multiplex PCR method was developed. We designed four species-specific primer pairs for multiplex PCR from the 16S rRNA, 16S-23S rRNA intergenic spacer region, and 23S rRNA genes in Lactobacillus acidophilus, Lactobacillus rhamnosus, Bifidobacterium longum, and Bifidobacterium bifidum. Using these primer pairs, 4 different LAB were detected with high specificity in functional foods. We suggest that the multiplex PCR method developed in this study would be an efficient tool for simple, rapid, and reliable identification of LAB used as probiotic strains.

Detection of Escherichia coli O157:H7, Salmonella spp., Staphylococcus aureus and Listeria monocytogenes in Kimchi by Multiplex Polymerase Chain Reaction (mPCR)

  • Park, Yeon-Sun;Lee, Sang-Rok;Kim, Young-Gon
    • Journal of Microbiology
    • /
    • 제44권1호
    • /
    • pp.92-97
    • /
    • 2006
  • We developed an mPCR assay for the simultaneous detection, in one tube, of Escherichia coli O157:H7, Salmonella spp., Staphylococcus aureus and Listeria monocytogenes using species-specific primers. The mPCR employed the E. coli O157:H7 specific primer Stx2A, Salmonella spp. specific primer Its, S. aureus specific primer Cap8A-B and L. monocytogenes specific primer Hly. Amplification with these primers produced products of 553, 312, 405 and 210 bp, respectively. All PCR products were easily detected by agarose gel electrophoresis, and the sequences of the specific amplicons assessed. Potential pathogenic bacteria, in laboratory-prepared and four commercially available kimchi products, were using this mPCR assay, and the amplicons cloned and sequenced. The results correlated exactly with sequences derived for amplicons obtained during preliminry tests with known organisms. The sensitivity of the assay was determined for the purified pathogen DNAs from four strains. The mPCR detected pathogen DNA at concentrations ranging from approximately 0.45 to $0.05\;pM/{\mu}l$. Thus, this mPCR assay may allow for the rapid, reliable and cost-effective identification of four potentially pathogens present in the mixed bacterial communities of commercially available kimchi.

오징어류 종 판별을 위한 다중 유전자 검사법 개발 및 검증 (Development and Validation of Multiplex Polymerase Chain Reaction to Determine Squid Species Based on 16s rRNA Gene)

  • 김현수;서용배;최성석;김진희;신지영;양지영;김군도
    • 한국식품위생안전성학회지
    • /
    • 제30권1호
    • /
    • pp.43-50
    • /
    • 2015
  • 본 연구에서는 오징어류에 해당하는 대왕오징어, 오징어, 문어, 한치 및 이를 이용한 가공식품에 대해서 분자생물학적 기법을 활용한 시험법을 검토하였다. 시료 중 원료성분 확인을 위하여 오징어류 4종에 대해 최적의 종 특이 프라이머를 디자인하였으며, 시료로부터 직접 genomic DNA를 추출하여 PCR을 실시하였다. PCR 수행과정에서 반응을 저해하는 염 성분을 제거하기 위하여 증류수를 이용하여 3~4회 세척 후 PCR을 실시한 결과, Single PCR의 경우 대왕오징어(552 bp), 오징어(463 bp), 문어(247 bp), 한치(354 bp)에 해당하는 종 특이적인 증폭산물을 확인하였으며, Multiplex PCR 의 경우 서로 다른 종 사이의 교차반응없이 동시다발적으로 증폭이 일어남을 확인할 수 있었다. 또한 이들 4종에 대해 PCR 민감도를 조사한 결과, 모두 약 $0.1ng/{\mu}l$의 농도까지 검출이 가능함을 확인하였으며 multiplex PCR의 경우 약 $0.25ng/{\mu}l$의 농도까지 검출이 가능함을 확인하였다. 이를 이용하여 오징어류가 함유된 수산물 가공식품 8건에 대해 적용성을 검토한 결과, 모든 시료에서 유효한 결과를 확인할 수 있었다. 따라서 본 연구에서 제작된 오징어류 4종에 대한 종 특이적 프라이머는 생물 상태뿐만 아니라 수산물 가공식품에 대해서도 이를 판별할 수 있어 식품안전관리에 활용할 수 있을 것으로 기대된다.

RAPD 분석을 통한 대황(大黃)과 종대황(種大黃) 감별용 SCAR 유전자 마커 개발 (Development of SCAR Markers for the Discrimination of Rhei Radix et Rhizoma and Rhei Undulatai Rhizoma based on the RAPD)

  • 문병철;이영미;천진미;이아영;윤태숙;전명숙;추병길;김호경
    • 대한본초학회지
    • /
    • 제24권4호
    • /
    • pp.115-120
    • /
    • 2009
  • Objectives : Due to the morphological similarity and frequent occurrence of intermediate forms as well as morphological variations of aerial part, the correct identification between Rhei Radix et Rhizoma and Rhei Undulatai Rhizoma is very difficult. To develop a reliable method for correct identification and improving the quality standards of Rhei Radix et Rhizoma and Rhei Undulatai Rhizoma, we analyzed RAPD and developed SCAR marker. Methods : To amplify target DNA at the genomic level, 32 Operon 10-mer random primers were applied with four Rheum species, R. officinale, R. palmatum, R. tanguticum and R. undulatum. The nucleotide sequences were determined and species-specific primers were prepared depending on the species-specific RAPD amplicons after subcloned into the pGEM-Teasy vector. To develop the SCAR markers, species-specific PCR amplification and multiplex-PCR were carried out using the single species-specific primer pairs and combinations of them, respectively. Results : We used RAPD analysis of four Rheum plant species to obtain several species-specific RAPD amplicons. From nucleotide sequences of these RAPD amplicons, we developed two SCAR markers that amplified 314 bp and 390 bp DNA fragments in only R. undulatum but not in R. officinale, R. palmatum, R. tanguticum and R. undulatum, for distinguishing Rhei Undulatai Rhizoma and Rhei Radix et Rhizoma. Furthermore, we established SCAR markers for the simultaneous discrimination of the three species within a single reaction by using multiplex-PCR. Conclusions : These genetic markers can be used for the efficient discrimination of plants species and commercial herbal medicines between Rhei Undulatai Rhizoma and Rhei Radix et Rhizoma, to ultimately prevent indiscriminate distribution and prescription of these herbal medicines.

옥돔과 옥두어 판별을 위한 PCR 검사법 개발과 검증 (Development and validation of a PCR method to discriminate between Branchiostegus japonicus and Branchiostegus albus)

  • 김나예슬;양지영;김중범
    • 한국식품과학회지
    • /
    • 제51권3호
    • /
    • pp.295-299
    • /
    • 2019
  • 본 연구에서는 형태학적으로 판별이 어려운 옥돔과 옥두어의 종 특이 primer를 개발, 검증한 후 모니터링을 통해 위변조 된 옥돔의 유통을 예방하고자 하였다. 옥돔과 옥두어 염기서열은 clustal omega 프로그램을 이용하여 정리하였고, primer3 프로그램을 이용하여 primer를 설계하였다. Multiplex PCR 결과는 옥돔과 옥두어에 대한 종 특이적 증폭이 확인되었고, PCR 반응을 확인하기 위한 공통 유전자에 대한 증폭이 확인되었다. 옥돔을 288 bp, 옥두어를 159 bp, 공통 유전자를 502 bp로 증폭되어 각각 PCR product 사이에 100 bp 이상 차이가 나타나 정확하게 판별이 가능하였다. Multiplex PCR 민감도 실험결과 옥돔 primer가 1 ng, 옥두어 primer가 1 ng, 공통 유전자 primer가 1 ng까지 밴드가 확인되었다. 모니터링 실험결과, 옥돔 38건, 옥두어 13건으로 판정되어 시료의 어종과 실험결과가 100% 일치함을 확인하였고, 위변조 사례는 나타나지 않았다. 본 실험에서 개발된 multiplex PCR 방법은 특이도와 민감도가 확보되었고 모니터링을 통해 유통, 판매되고 있는 옥돔과 옥두어의 판별에 적합함을 확인하였다.

Development of Strain-Specific Primers for Identification of Bifidobacterium bifidum BGN4

  • Youn, So Youn;Ji, Geun Eog;Han, Yoo Ri;Park, Myeong Soo
    • Journal of Microbiology and Biotechnology
    • /
    • 제27권5호
    • /
    • pp.909-915
    • /
    • 2017
  • Bifidobacterium bifidum BGN4 (BGN4) has many proven beneficial effects, including antiallergy and anticancer properties. It has been commercialized and used in several probiotic products, and thus strain-specific identification of this strain is very valuable for further strain-dependent physiological study. For this purpose, we developed novel multiplex polymerase chain reaction (PCR) primer sets for strain-specific detection of BGN4 in commercial products and fecal samples of animal models. The primer set was tested on seven strains of B. bifidum and 75 strains of the other Bifidobacterium species. The BGN4-specific regions were derived using megaBLAST against genome sequences of various B. bifidum databases and four sets of primers were designed. As a result, only BGN4 produced four PCR products simultaneously whereas the other strains did not. The PCR detection limit using BGN4-specific primer sets was $2.8{\times}10^1CFU/ml$ of BGN4. Those primer sets also detected and identified BGN4 in the probiotic products containing BNG4 and fecal samples from a BGN4-fed animal model with high specificity. Our results indicate that the PCR assay from this study is an efficient tool for the simple, rapid, and reliable identification of BGN4, for which probiotic strains are known.

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
    • /
    • 제31권1호
    • /
    • pp.28-35
    • /
    • 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.

Multiplex PCR Using Conserved and Species-Specific 16S rDNA Primers for Simultaneous Detection of Fusobacterium nucleatum and Actinobacillus actinomycetemcomitans

  • Kim, Mi-Kwang;Kim, Hwa-Sook;Kim, Byung-Ock;Yoo, So-Young;Seong, Jin-Hyo;Kim, Dong-Kie;Lee, Shee-Eun;Choe, Son-Jin;Park, Joo-Cheol;Min, Byung-Moo;Jeong, Moon-Jin;Kim, Do-Kyung;Shin, Yong-Kook;Kook, Joong-Ki
    • Journal of Microbiology and Biotechnology
    • /
    • 제14권1호
    • /
    • pp.110-115
    • /
    • 2004
  • This study was undertaken to develop PCR primers for the simultaneous detection of Fusobacterium nucleatum and Actinobacillus actinomycetemcomitans, using two species-specific reverse primers in combination with a single conserved forward primer. These primers target the variable and conserved regions of the 16S rDNA. The primer specificity was tested against (i) four F. nucleatum and three A. actinomycetemcomitans strains and (ii) seven representatives of the different species of oral bacteria. The primer sensitivity was determined by testing serial dilutions of the purified genomic DNA of F. nucleatum and A. actinomycetemcomitans. The data indicate that species-specific amplicons could be obtained for all the F. nucleatum and A. actinomycetemcomitans strains tested, which were not found in the seven other species. The multiplex PCR could detect as little as 4 fg of chromosomal DNA of F. nucleatum and A. actinomycetemcomitans simultaneously. These findings suggest that these PCR primers are highly sensitive and are suitable for applications in epidemiological studies, diagnosis, and monitoring F. nucleatum and A. actinomycetemcomitans after the treatment of periodontitis.

ITS 염기서열 기반 방기 신속 감별용 SCAR marker 개발 (Development SCAR marker for the rapid authenticaton of Sinomeni Caulis et Rhizoma based on ITS Sequences)

  • 김욱진;노수민;최고야;문병철
    • 대한본초학회지
    • /
    • 제37권4호
    • /
    • pp.9-16
    • /
    • 2022
  • Objectives : In the Korean Pharmacopoeia 12th edition (KP 12) and the Korean Herbal Pharmacopoeia (KHP), two authentic herbal medicines are described, namely Bang-gi (Cheong-pung-deung) and Mok-bang-gi, respectively. In China, Bun-bang-gi is also used as herbal medicine. This study was conducted to develop a molecular authentication tool for distinguishing the three herbal medicine used as Bang-gi, which are Sinomeni Caulis et Rhizoma (Rhizome of Sinomenium acutum), Stephaniae Tetrandrae Radix (Root of Stephania terandra), and Cocculi Radix (Root of Cocculus trilobus). Methods : Twelve samples of three species (four samples of S. acutum, five samples of S. tetrandra, and three samples of C. trilobus) were collected from different habitats. The sequences of internal transcribed spacer (ITS) regions were obtained and comparatively analyzed to design the species-specific sequence characterized amplified region (SCAR) primers. The specificity of each pair of SCAR primers that amplified species-specific amplicon was evaluated for establishing the singleplex and multiplex PCR assay tools. Results : The singleplex SCAR markers show discriminability in C. acutum, S. tetrandra, and C. trilobus. These SCAR markers were also efficiently authenticated three species in the multiplex SCAR amplification using single PCR reaction. Furthermore, these PCR assay methods were applicable to authenticate dried herbal medicines distributed in the markets. Conclusions : The SCAR markers and PCR assay tools help discriminate the three herbal medicines used as Bang-gi at the species levels and provide a reliable genetic method to prevent the inauthentic distribution of these herbal medicines.