• Title/Summary/Keyword: DNA microarray

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SNP (Single Nucleotide Polymorphism) Detection Using Indicator-free DNA (비수식화 DNA를 이용한 SNP의 검출)

  • Choi, Yong-Sung;Park, Dae-Hee;Kwon, Young-Soo
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2003.11a
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    • pp.224-226
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    • 2003
  • In this paper, we succeeded SNP discrimination of DNA hybridization on microarray using new electrochemical system. Using the electrochemical method with a label-free DNA has Performed DNA chip microarray. This method is based on redox of an electrochemical ligand. We developed scanning system with high performance.

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Web-based DNA Microarray Data Analysis Tool

  • Ryu, Ki-Hyun;Park, Hee-Chang
    • Journal of the Korean Data and Information Science Society
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    • v.17 no.4
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    • pp.1161-1167
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    • 2006
  • Since microarray data structures are various and complicative, the data are generally stored in databases for approaching to and controlling the data effectively. But we have some difficulties to analyze and control the data when the data are stored in the several database management systems. The existing analysis tools for DNA microarray data have many difficult problems by complicated instructions, and dependency on data types and operating system, and high cost, etc. In this paper, we design and implement the web-based analysis tool for obtaining to useful information from DNA microarray data. When we use this tool, we can analyze effectively DNA microarray data without special knowledge and education for data types and analytical methods.

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Fabrication of Biochip by Hydrophobic Interaction (무작위 조립법을 이용한 바이오칩의 제작)

  • Choi, Yong-Sung;Moon, Jong-Dae;Lee, Kyung-Sup
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2006.06a
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    • pp.404-405
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    • 2006
  • Microarray-based DNA chips provide an architecture for multi-analyte sensing. In this paper, we report a new approach for DNA chip microarray fabrication. Multifunctional DNA chip microarray was made by immobilizing many kinds of biomaterials on transducers (particles). DNA chip microarray was prepared by randomly distributing a mixture of the particles on a chip pattern containing thousands of m-scale sites. The particles occupied a different sites from site to site. The particles were arranged on the chip pattern by the random fluidic self-assembly (RFSA) method, using a hydrophobic interaction for assembly.

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A DNA Microarray LIMS System for Integral Genomic Analysis of Multi-Platform Microarrays

  • Cho, Mi-Kyung;Kang, Jason Jong-ho;Park, Hyun-Seok
    • Genomics & Informatics
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    • v.5 no.2
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    • pp.83-87
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    • 2007
  • The analysis of DNA microarray data is a rapidly evolving area of bioinformatics, and various types of microarray are emerging as some of the most exciting technologies for use in biological and clinical research. In recent years, microarray technology has been utilized in various applications such as the profiling of mRNAs, assessment of DNA copy number, genotyping, and detection of methylated sequences. However, the analysis of these heterogeneous microarray platform experiments does not need to be performed separately. Rather, these platforms can be co-analyzed in combination, for cross-validation. There are a number of separate laboratory information management systems (LIMS) that individually address some of the needs for each platform. However, to our knowledge there are no unified LIMS systems capable of organizing all of the information regarding multi-platform microarray experiments, while additionally integrating this information with tools to perform the analysis. In order to address these requirements, we developed a web-based LIMS system that provides an integrated framework for storing and analyzing microarray information generated by the various platforms. This system enables an easy integration of modules that transform, analyze and/or visualize multi-platform microarray data.

Construction and Analysis of a DNA Microarray for the Screening of Biosynthetic Genes of Secondary-Metabolites formation in Streptomyces (방선균 유래 이차대사 생합성 유전자 분석용 DNA Microarray 제작 및 해석)

  • Nam Soo Jung;Kang Dae-Kyung;Rhee Ki Hyeong;Kim Jong-Hee;Kang Sang Sun;Chang Yong Keun;Hong Soon-Kwang
    • Korean Journal of Microbiology
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    • v.41 no.2
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    • pp.105-111
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    • 2005
  • Streptomyces produces many kinds of secondary-metabolites including antibiotics. Screening of a new compound and elucidation of a biosynthetic pathway for the secondary metabolites are very important fields of biology, however, there is a main problem that most of the identified compounds are already researched compounds. To solve these problems, a microarray system that is based on the data related to the biosynthetic genes for secondary-metabolites was designed. For the main contents of DNA microarray, the important genes for the bio-synthesis of aminoglycosides, polyenes group, enediyne group, alpha-glucosidase inhibitors, glycopeptide group, and orthosomycin group were chosen. A DNA microarray with 69 genes that were involved in the bio-synthesis for the antibiotics mentioned above was prepared. The usability of the DNA microarray was confirmed with the chromosomal DNA and total RNA extracted from S. coelicolor whose genomic sequence had already been reported.

Fabrication of DNA Chip Using a Hydrophobic Template (소수성 Template를 이용한 DNA칩의 제작)

  • Choi, Yong-Sung;Moon, Jong-Dae;Lee, Kyung-Sup
    • Proceedings of the KIEE Conference
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    • 2006.07c
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    • pp.1315-1316
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    • 2006
  • Microarray-based DNA chips provide an architecture for multi-analyte sensing. In this paper, we report a new approach for DNA chip microarray fabrication. Multifunctional DNA chip microarray was made by immobilizing many kinds of biomaterials on transducers (particles). DNA chip microarray was prepared by randomly distributing a mixture of the particles on a chip pattern containing thousands of m-scale sites. The particles occupied a different sites from site to site. The particles were arranged on the chip pattern by the random fluidic self-assembly (RFSA) method, using a hydrophobic interaction for assembly.

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Print-tip Normalization for DNA Microarray Data (DNA 마이크로어레이 자료의 PRINT-TIP별 표준화(NORMALIZATION) 방법)

  • Yi Sung-Gon;Park Taesung;Kang Sung Hyun;Lee Seung-Yeaun;Lee Yang Sung
    • The Korean Journal of Applied Statistics
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    • v.18 no.1
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    • pp.115-127
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    • 2005
  • DNA microarray experiments allow us to study expression of thousands of genes simultaneously, Normalization is a process for removing noises occurred during the microarray experiment, Print-tip is regarded as one main sources of noises, In this paper, we review normalization methods most commonly used in the microarray experiments, Especially, we investigate the effects of print-tips through simulated data sets.

Microarray 자료분석에서 표준화

  • 이성곤;박태성;최호식
    • Proceedings of the Korean Statistical Society Conference
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    • 2001.11a
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    • pp.149-153
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    • 2001
  • 본 논문은 microarray를 분석하기위한 표준화에 대한 여러 방법들을 소개하고 비교해보았다. Microarray 연구는 Human Genome Project에서 파생된 여러 생명공학 기술 중 가장 널리 사용되는 기술로 기존에는 하지 못했던 총체적인 유전자의 발현상황을 탐색할 수 있다는 장점을 지니고 있으나, 자료들에 일정한 패턴이 나타나거나 잡음이 첨가되어 정보의 추출이 용의하지 않다는 단점을 지니고 있다. 특히 자료에 일정한 패턴이 있는 경우에 올바르지 못한 결론을 이끌어낼 수도 있기에 이 패턴을 제거하는 표준화작업은 microarray 분석에 있어서 매우 중요한 처리과정이다. 본 논문에서는 표준화방법들을 소개하고 각각 가지고 있는 장단점을 실제 국내에서 얻어진 자료를 통해 비교하였고, 그 결과 LOWESS 적합을 통한 표준화방법이 타 방법에 비해 유용한 점이 많음을 확인할 수 있었다.

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SNP Detection Using Indicator-free DNA Chip (비수식화 DNA를 이용한 유전자 검출)

  • Choi, Yong-Sung;Moon, Jong-Dae;Lee, Kyung-Sup
    • Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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    • 2006.06a
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    • pp.410-411
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    • 2006
  • High throughput analysis using a DNA chip microarray is powerful tool in the post genome era. Less labor-intensive and lower cost-performance is required. Thus, this paper aims to develop the multi-channel type label-free DNA chip and detect SNP (Single nucleotide polymorphisms). At first, we fabricated a high integrated type DNA chip array by lithography technology. Various probe DNAs were immobilized on the microelectrode array. We succeeded to discriminate of DNA hybridization between target DNA and mismatched DNA on microarray after immobilization of a various probe DNA and hybridization of label-free target DNA on. the electrodes simultaneously. This method is based on redox of an electrochemical ligand.

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Enhancement of DNA Microarray Hybridization using Microfluidic Biochip (미세유체 바이오칩을 이용한 DNA 마이크로어레이 Hybridization 향상)

  • Lee, H.H.;Kim, Y.S.
    • KSBB Journal
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    • v.22 no.6
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    • pp.387-392
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    • 2007
  • Recently, microfluidic biochips for DNA microarray are providing a number of advantages such as, reduction in reagent volume, high-throughput parallel sample screening, automation of processing, and reduction in hybridization time. Particularly, the enhancement of target probe hybridization by decrease of hybridization time is an important aspect highlighting the advantage of microfluidic DNA microarray platform. Fundamental issues to overcome extremely slow diffusion-limited hybridization are based on physical, electrical or fluidic dynamical mixing technology. So far, there have been some reports on the enhancement of the hybridization with the microfluidic platforms. In this review, their principle, performance, and outreaching of the technology are overviewed and discussed for the implementation into many bio-applications.