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- W2052235596 abstract "Mycobacterium 속은 Mycobacterium tuberculosis, Mycobacterium leprae, Mycobacterium bovis와 같은 동물과 인체에 병원성을 나타내는 세균 종을 다수 포함하고 있다. 이들의 숙주에서의 생존과 병원성에 관한 유전학적 정보를 확보하는 것은 매우 중요하지만, 효과적인 유전학적 도구가 부족하였기 때문에 이들에 관한 연구가 미비하였다. 따라서 mycobacteria의 연구를 위한 분자생물학적 실험 도구로서 다양한 기능성 vector들이 고안되었고, 이러한 기능성 vector의 개발은 실질적으로 mycobacteria에서의 연구 효과를 증진시켰다. 본 연구에서는 Mycobacterium smegmatis에 적용 가능하고 기존에 제시되었던 mycobacteria 연구에 있어서의 한계점을 극복하기 위한 노력의 일환으로, 기능성 vector인 temperature-sensitive replication origin (TSRO)과 counterselectable marker로 levansucrase를 암호화하는 sacB 유전자를 포함하는 suicide vector pKOTs, chromosomal DNA로 site-specific recombination을 통해 삽입되는 lacZ transcriptional fusion vector pMV306lacZ, 그리고 TSRO를 가지는 minitransposon vector pTnMod-OKmTs를 개발하였다. 이 vector들은 실질적으로 M. smegmatis에서 효과적으로 작동하는 것이 확인되었으며 목적으로 하는 실험 결과 도출 가능성 또한 보여주었다. 따라서 이들 vector는 앞으로의 mycobacteria에 대한 효과적인 연구 기반이 될 것으로 기대된다. The genus Mycobacterium includes crucial animal and human pathogens such as Mycobacterium tuberculosis, Mycobacterium leprae, and Mycobacterium bovis. Although it is important to understand the genetic basis for their virulence and persistence in host, genetic analysis in mycobacteria was hampered by a lack of sufficient genetic tools. Therefore, many functional vectors as molecular genetic tools have been designed for understanding mycobacterial biology, and the application of these tools to mycobacteria has accelerated the study of mechanisms involved in virulence and gene expression. To overcome the pre-existing problems in genetic manipulation of mycobacteria, this paper reports new vector systems as effective genetic tools in Mycobacterium smegmatis. Three vectors were developed; pKOTs is a suicide vector for mutagenesis containing a temperature-sensitive replication origin (TSRO) and the sacB gene encoding levansucrase as a counterselectable marker. pMV306lacZ is an integrative lacZ transcriptional fusion vector that can be inserted into chromosomal DNA by site-specific recombination. pTnMod-OKmTs is a minitransposon vector harboring the TSRO that can be used in random mutagenesis. It was demonstrated in this study that these vectors effectively worked in M. smegmatis. The vector systems reported here are expected to successfully applicable to future research of mycobacterial molecular genetics." @default.
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- W2052235596 date "2013-02-28" @default.
- W2052235596 modified "2023-10-17" @default.
- W2052235596 title "Development of New Vector Systems as Genetic Tools Applicable to Mycobacteria" @default.
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