Doxorubicin (DOX) is a highly valuable anticancer drug belonging to the anthracycline family, which is generated by a high G+C gram-positive soil bacterium, Streptomyces peucetius. It has been well documented that the biosynthesis of most antibiotics are tightly regulated at complicated genetic levels, thus leading to very low productivity in wild-type strains. To screen novel potential regulatory genes involved in antibiotic overproduction, wild type and overproducing strains such as actinorhodin (ACT)-producing S. lividans and DOX-producing S. peucetius were generated and compared via omics-driven strategies. Using 2-D gel electrophoresis and MALDI-TOF analyses between the wild type and the ACT-overproducing S. lividans, several proteomics-guided targets were identified. Comparative transcriptomes were also analyzed between the wild type and the DOX-overproducing S. peucetius via S. coelicolor cDNA microarrays. We found several potential regulatory genes involved in antibiotics-overproduction. To show the biological significance of the omics-driven potential target genes in Streptomyces species, these genes were functionally expressed and partially characterized both in S. coelicolor and S. peucetius. Further analysis revealed that expression of some of these genes inhibited antibiotics production. The identification and manipulation of these cryptic regulatory genes described herein may result in the maximization of the genetic productivity potentials in Streptomyces species.
저자
Jong-Hyuk Im [ Department of Biological Engineering, Inha University ]
Han-Na Lee [ Department of Biological Engineering, Inha University ]
Eung-Soo Kim [ Department of Biological Engineering, Inha University ]
한국생물공학회 [The Korean Society for Biotechnology and Bioengineering]
설립연도
1984
분야
공학>생물공학
소개
이 법인은 생물 공학의 발전과 보급에 이바지하고, 회원 상호 간의 연구 협력과 친목을 도모함을 목적으로 한다
1. 생물공학 분야의 발전을 위한 연구 협력
2. 생물공학의 실용화를 촉진시키기 위한 산학 협동
3. 학술연구 발표회, 강연회, 연수회 등 학술활동의 개최
4. 국,영문 학술지,소식지,학술회의 Proceedings 및 학술도서의 발간
5. 생물공학 발전을 위한 정책 건의
6. 기타 국제 교류 등 본 학회의 목적 달성을 위한 제반 활동