Journal of Sericultural and Entomological Science (한국잠사곤충학회지)

Korean Society of Sericultural Science (한국잠사학회)
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Gene expression profile of the early embryonic gene of the silkworm, Bombyx mori

누에 수정란 초기발현유전자 데이터베이스 구축

  • Choi, Kwang-Ho (Sericultural & Apicultural Materials Division, National Academy of Agricultural Science, RDA) ;
  • Goo, Tae-Won (Sericultural & Apicultural Materials Division, National Academy of Agricultural Science, RDA) ;
  • Kim, Seong-Ryul (Sericultural & Apicultural Materials Division, National Academy of Agricultural Science, RDA) ;
  • Kim, Sung-Wan (Sericultural & Apicultural Materials Division, National Academy of Agricultural Science, RDA) ;
  • Chun, Jae-Buhm (Sericultural & Apicultural Materials Division, National Academy of Agricultural Science, RDA) ;
  • Park, Seoung-Won (Dep. of Biotechnology, Catholic Univ. of DAEGU) ;
  • Kang, Seok-Woo (Sericultural & Apicultural Materials Division, National Academy of Agricultural Science, RDA)
  • 최광호 (농촌진흥청 국립농업과학원 잠사양봉소재과) ;
  • 구태원 (농촌진흥청 국립농업과학원 잠사양봉소재과) ;
  • 김성렬 (농촌진흥청 국립농업과학원 잠사양봉소재과) ;
  • 김성완 (농촌진흥청 국립농업과학원 잠사양봉소재과) ;
  • 전재범 (농촌진흥청 국립농업과학원 잠사양봉소재과) ;
  • 박승원 (대구가톨릭대학교 의료생명산업대학 생명공학과) ;
  • 강석우 (농촌진흥청 국립농업과학원 잠사양봉소재과)
  • Received : 2013.09.28
  • Accepted : 2013.10.15
  • Published : 2013.11.30
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Abstract

This study was aimed for development of a useful genes that has a transcript expressional specificity in the early embryonic stage of the silkworm, Bombyx mori. We constructed and analyzed a full-length cDNA library from silkworm's eggs which after a lapse of 2 ~ 6 hours post oviposit. A total 960 clones were randomly selected, and the 5' ends of the inserts were sequenced to generate 652 expressed sequence tags(EST). 334 unique ESTs were generated after the assembly of 652 ESTs. The annotation of 334 unique ESTs by BLAST search revealed that 156(47%) of the sequences represented known genes, whereas 178(53%) of the sequences has no matches in the database. Of the 156 known genes, the most abundant genes were heat shock protein hsp20.8 gene(12 times) and ubiqutin-like protein gene(11 times). The functional groups of these ESTs with matches in the database were constructed according to their putative molecular functions. Among thirteen functional categories, the largest groups were protein synthesis(9.6%) and cellular organization( 8.1%). Further defined studies on molecular functions and biological roles of their promoters will give us wellfined information and its application.

본 연구는 누에 수정란 초기에 발현하는 유전자를 대량 선발하고, 유용 유전자의 프로모터를 개발하기 위한 연구의 일환으로 추진하였다. 산란 후 2 ~ 16시간이 경과한 누에알로부터 cDNA 유전자은행을 제작하였다. 제작된 cDNA 유전자은행으로 전체 960개 클론을 무작위 추출하여 부분 염기서열 분석을 통해 EST를 제작하였다. 분석된 652개 ESTs 중 염기서열 상동성 분석을 통해 156개의 기존 알려진 유전자와 178개의 미지의 유전자로 구성된 334개 독립유전자를 최종 선발하여 'eegEST'로 명명하였다. eegEST 분석 결과, 기존 염기서열 정보가 알려진 156개 독립유전자 중 2회 이상 출현한 유전자 수는 143개로 전체의 34%를 차지하였으며, Hsp20.8 유전자(12회)와 ubiqutin-like 유전자(11회)가 가장 높은 출현 빈도를 나타내었다. 또한 eegEST 독립유전자의 추정 기능에 따른 분류에서 곤충 수정란 발생초기에 확인할 수 있는 기관 형성과 관련한 유전자가 전체 24%를 차지하고 있었다. 본 연구에서 작성된 누에 수정란 초기 발현유전자 데이터베이스(eegEST)는 곤충 발생학 연구를 위한 정보제공 뿐 아니라 형질전환누에 제작을 위한 프로모터 개발 연구에 활용될 수 있을 것으로 기대한다.

Keywords

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