• 한국생물공학회:학술대회논문집
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• 한국생물공학회 2000년도 춘계학술발표대회
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• pp.592-595
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• 2000

In human chromosome, a short sequence of DNA has been repeated a number of times. These repeats are called variable number of tandem repeat(VNTR) or short tandem repeat(STR) which has short repeat core. VNTR and STR are used in the field of forensic science, evolution, and anthropology. In this work, we examined allele frequencies of 3 VNTR(YNZ22, NeuR, D21S11) and one STR(Humth01) in a Korean population sample by polymerase chain reaction(PCR) followed by high-resolution polyacrylamide gelelectrophoresis(PAGE) with silver staining. Subsequently, the polymorphism information content(PIC) was calculated : the highest PIC was observed for the NeuR locus(0.95680) and lowest for the Humth01 locus(0.75809).

• Biotechnology and Bioprocess Engineering:BBE
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• 제5권3호
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• pp.169-173
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• 2000

On human chromoscomes, a short sequence of DNA is known to repeat a number of times. These are called variable number of tandem repeat (VNTR) or short tandem respeat (STR) which has a short core. VNTR and STR are used in the filed of forensic science, evolution, and anthropology. In this work, we examined allele frequencies of one VNTR (YNZ22) and three STRs (NeuR, D21S11, Humth01) in a korean population sample by polymerase chain reaction (RCP) followed by high-resolution polyacrylamide gel electro-phoresis (PAGE) with silver stain. Subsequently, the polymorphism information content (PIC) was calculated : the hifhest PIC was observed in the NeuR locus (0.95680) and lowest in the Humth01 locus (0.75809).

• 한국군사과학기술학회지
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• 제14권2호
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• pp.305-312
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• 2011

Bacillus anthracis(Ba) is a Gram-positive spore-forming bacterium that causes the disease anthrax. The feature of Ba is the presence of two large virulence plasmids, pXO1 and pXO2. Molecular genotyping of Ba has been difficult to the lack of polymorphic DNA marker. Ba isolated from Korea has been genotyped using various nucleotide analysis methods, such as 16s rDNA sequencing and multiple-locus variable-number tandem repeat (MLVA) analysis. We identified genotypes that represent a genetic lineage in the B1 cluster. This study emphasized the need to perform molecular genotyping when attempting to verify a strain-specific Ba.

• Journal of Oral Medicine and Pain
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• 제21권2호
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• pp.317-329
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• 1996

Allelic frequency and genotype distribution of short tandem repeat(STR) F13A01 locus was analysed by polymerase chain reaction, polyacrylamide gel electrophoresis and silver staining from human genomic deoxyribonucleic acid(DNA) was extracted from 205 unrelated Korean to be applied to forensic identification and parentage testing as a database. The results were as follows : 1. 5 alleles and 11 genotypes of F13A01 locus were detected and heterozygosity value was 62.0% and the observed each alleles and allelic frequency was 3.2(0.363), 4(0.105), 5(0.063), 6(0.466), 16(0.002). 2. The allelic diversity value was 0.639 and the power of discrimination was 0.804.3. Compared with observed number of alleles and allele frequency in ethnic difference, result was appeared to be similar to that of Japanese and Asians, while was appeared to be much different to that of Blacks and Caucasians in the observed number of alleles and frequency of allele 3.2, 5, 7. From the above result of this investigation, the allelic frequency of STR F13A01 locus in the Korean was considerd to be useful for individual identification and parentage testing as a database.

• Molecules and Cells
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• 제43권7호
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• pp.607-618
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• 2020

microRNAs (miRNAs) are non-coding RNA molecules involved in the regulation of gene expression. miRNAs inhibit gene expression by binding to the 3' untranslated region (UTR) of their target gene. miRNAs can originate from transposable elements (TEs), which comprise approximately half of the eukaryotic genome and one type of TE, called the long terminal repeat (LTR) is found in class of retrotransposons. Amongst the miRNAs derived from LTR, hsa-miR-3681 was chosen and analyzed using bioinformatics tools and experimental analysis. Studies on hsa-miR-3681 have been scarce and this study provides the relative expression analysis of hsa-miR-3681-5p from humans, chimpanzees, crab-eating monkeys, and mice. Luciferase assay for hsa-miR-3681-5p and its target gene SHISA7 supports our hypothesis that the number of miRNA binding sites affects target gene expression. Especially, the variable number tandem repeat (VNTR) and hsa-miR-3681-5p share the binding sites in the 3' UTR of SHISA7, which leads the enhancer function of hsamiR-3681-5p to inhibit the activity of VNTR. In conclusion, hsa-miR-3681-5p acts as a super-enhancer and the enhancer function of hsa-miR-3681-5p acts as a repressor of VNTR activity in the 3' UTR of SHISA7.

• 대한의생명과학회지
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• 제15권2호
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• pp.167-170
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• 2009

Nitric oxide is an important factor to regulate the biochemical reactions in the body such as expansion of blood vessel, neural conduction and antimicrobial activity. There are two forms of nitric oxide synthase and iNOS has attracted most attention because it is involved in the development of diabetes and cardiac disease condition. There are several regulatory sequences in the promoter region of iNOS gene. One of them is (CCTTT)n. It has been reported that the number of tandem repeat of (CCTTT)n varies from population to population. So, we analyzed (CCTTT)n polymorphism in Korean genome for the purpose of comparison. According to our present study Koreans are different from other Asians reported previously because $(CCTTT)_{10}$ is the highest incidence as opposed to $(CCTTT)_{12}$ for other countries. This study should facilitate the understanding of the expression of iNOS gene in different population.

• 한국동물학회:학술대회논문집
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• 한국동물학회 2001년도 한국생물과학협회 학술발표대회
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• pp.249.2-249
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• 2001

• 한국식품위생안전성학회지
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• 제29권4호
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• pp.278-284
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• 2014

본 연구는 들깻잎과 들깻잎 생산 환경을 대상으로 S. aureus를 분리하고 MLVA를 이용해 분리된 S. aureus의 오염경로를 분석하였다. 그 결과, 들깻잎에서 S. aureus의 검출빈도는 7.9% (9/114)였고 검출수준은 $0{\sim}2.92{\log}_{10}CFU/g$였으며 2곳의 농가에서 S. aureus가 $2.00{\log}_{10}CFU/g$ 이상으로 검출되었다. S. aureus가 분리된 5농가를 대상으로 들깻잎과 직접 접촉하는 시료에서 S. aureus를 분리하였으며 5 농가 중 3농가의 작업환경 (농가의 포장대, 포장비닐, 작업자 손, 복장 등)에서 S. aureus가 검출되었다. 들깻잎과 생산 환경에서 분리된 S. aureus를 대상으로 MLVA를 수행했을 때 포장대, 작업자의 손, 포장비닐 및 관개용수에서 분리된 균주와 들깻잎에서 분리된 S. aureus가 동일한 패턴을 보여 들깻잎의 오염은 이들 시료와 연관되어 있을 것으로 추정된다. 따라서 MLVA를 이용한 유전자 typing은 농산물이나 식품 중 S. aureus의 오염원을 신속하고 경제적으로 구명하는데 활용할 수 있을 것으로 판단된다.

• 사상체질의학회지
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• 제21권1호
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• pp.227-236
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• 2009

1. Objectives As a basic trial for identification of Sasang constitutional gene marker, we genotyped and analysed statistical relationships of STR(short tandem repeat) alleles and its distribution in each constitution. 2. Methods After obtaining basic constitutional data with questionnaire (QSCC II), decision of constitution was made by 3 different constitution specialists' diagnosis, and only the samples of specialists' agreement of each constitution by discussion were taken into this research. Using multiplex PCR kit, total 146 constitutional samples were amplified in 16 autosomal STR marker, genotyped, and analysed statistically. Among 16 markers, 15 were analysed in this study excluding the amelogenin marker is used for in gender identification. 3. Results and Conclusions It is difficult to determine the relationship between constitution and STR marker as the sample size is small, however, Penta D and vWA were shown to be related statistically with constitution. It has been know that STRs has no genetic informations, however there are some recent research results showing STRs as a regulatory element, relationship between microsatellite instability and repeat number and size, and post-transcriptional sigualing. STRs which is not known about its function currently, are proposed to have function and/or regulatory activities anyhow with Sasang constitution. It is believed that the results of this study can halp determine and deatify the markers related to Sasang Constitutional Medicien.

• 대한의생명과학회지
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• 제15권3호
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• pp.229-232
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• 2009

DNA isolation for PCR-based short tandem repeat (STR) analysis is essential to recover high yields of amplifiable DNA from low copy number (LCN) DNA samples. There are different methods developed for DNA extraction from the small bloodstain and gloves, commonly found at crime scenes. In order to obtain STR profiles from LCN DNA samples, DNA extraction protocols, namely the automated $iPrep^{TM}$ $ChargeSwitch^{(R)}$ method, the automated $QIAcube^{TM}$ method, the automated $Maxwell^{(R)}$ 16 DNA $IQ^{TM}$ Resin method, and the manual $QIAamp^{(R)}$ DNA Micro Kit method, were evaluated. Extracted DNA was quantified by the $Quantifiler^{TM}$ Human DNA Quantification Kit and DNA profiled by $AmpFISTR^{(R)}$ $Identifiler^{(R)}$ Kit. Results were compared based on the amount of DNA obtained and the completeness of the STR profiles produced. The automated $iPrep^{TM}$ $ChargeSwitch^{(R)}$ and $QIAcube^{TM}$ methoas produced reproducible DNA of sufficient quantity and quality trom the dried blood spot. This two automated methods showed a quantity and quality comparable to those of the forensic manual standard protocols normally used in our laboratory. In our hands, the automated DNA extraction method is another obvious choice when the forensic case sample available is bloodstain. The findings of this study indicate that the manual simple modified $QIAamp^{(R)}$ DNA Micro Kit method is best method to recover high yields of amplifiable DNA from the numerous potential sources of LCN DNA samples.