Journal of Life Science (생명과학회지)

Korean Society of Life Science (한국생명과학회)
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Screening and Characterization of Drosophila Development Mutants Using Single P[en-lacZ] Element Mutagenesis

Drosophila single P[en-lacZ] element mutagenesis를 이용한 발생 관련 돌연변이체 작성

  • 하혜영 (부산대학교 분자생물학과) ;
  • 이희정 (부산대학교 생물학과) ;
  • 박순희 (부산대학교 분자생물학과) ;
  • 유미애 (부산대학교 분자생물학과) ;
  • 이원호 (부산대학교 생물학과)
  • Published : 1997.03.01
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Abstract

Single P[en-lacZ] element including 5.7 kb of engrailed upstream sequences and the E. coli lacZ fusion gene, localized on 48A in rxyho25 strain was transposed to different sites in the Drosophila genome by the jumpstart technique. From 3315 individual genetic crosses, 113 new insertion lines carrying P[en-lacZ] inserted at different sites were obtained. $\beta$-Galactosidase expression in larval tissues of 113 insertion lines were detected by X-gal staining. & among 113 lines have been indentified to be for recessive lethal mutations. Among 7 lines, the #1119 line being lethal during embryogenesis was examined about the ${\beta}$$-Galactosidase expression, nuclear behavior and cellularization pattern during embryogenesis. The P[en-lacZ] insertion lines obtained in this study could be utilized for studying structure and function of the Drosophila development-related genes.

Engralied 5.7kb upstream sequence와 E. colilacZ의 융합 유전자를 가진 P[en-lacZ] 인자를 jumpstart 기법을 이용하여, ryXho25 strain의 초파리 48A 염색체 위치로부터 새로운 위치로 삽입하였다. 총 3315의 유전적 교배를 통해서, P[en-lacZ] 가 다른 염색체 상으로 삽인된 113 계통을 얻었다. X-gal 염색으로 이들 113 계통의 3령기 유충 조직에서의 $\beta$-galactosidase 발현을 조사하였다. 도한 113 계통 중 7계통이 열성치사돌연변이인 것으로 동정되었다. 이들 7 계통 중 초기 배발생 과정에서 치사하는 것으로 조사된 #1119의 초기 배발생 과정에서의 ${\beta}$-galactosidase 발현과 핵의 이동 및 세포화 양상을 조사하였다. 본 연구에서 얻어진 P[en-lacZ] 삽입 돌연변이체들은 앞으로 Drosophila 발생에 관련된 유전자들의 구조와 기능을 연구하는데 활용될 수 있을 것이다.

Keywords

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