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Niu H, Sun X, Song J, Zhu C, Chen Y, Gao N, Qu X, Ying H, Liu D. Knockout of pde gene in Arthrobacter sp. CGMCC 3584 and transcriptomic analysis of its effects on cAMP production. Bioprocess Biosyst Eng 2020; 43:839-850. [PMID: 31925506 DOI: 10.1007/s00449-019-02280-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2019] [Accepted: 12/27/2019] [Indexed: 01/29/2023]
Abstract
Arthrobacter sp. CGMCC 3584 is used for the industrial production of cyclic adenosine monophosphate (cAMP). However, because of the paucity of genetic engineering tools for genetic manipulation on Arthrobacter species, only a few metabolically engineered Arthrobacter have been constructed and investigated. In this study, for the first time, we constructed an arpde knockout mutant of Arthrobacter without any antibiotic resistance marker by a PCR-targeting-based homologous recombination method. Our results revealed that the deletion of arpde had little effect on biomass production and improved cAMP production by 31.1%. Furthermore, we compared the transcriptomes of the arpde knockout strain and the wild strain, aiming to understand the capacities of cAMP production due to arpde inactivation at the molecular level. Comparative transcriptomic analysis revealed that arpde inactivation had two major effects on metabolism: inhibition of glycolysis, PP pathway, and amino acid metabolism (phenylalanine, tryptophan, branched-chain amino acids, and glutamate metabolism); promotion of the purine metabolism and carbon flux from the precursor 5'-phosphoribosyl 1-pyrophosphate, which benefited cAMP production.
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Affiliation(s)
- Huanqing Niu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, No. 5, Xinmofan Road, Nanjing, 210009, People's Republic of China
- National Engineering Technique Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing, 211816, People's Republic of China
| | - Xinzeng Sun
- National Engineering Technique Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing, 211816, People's Republic of China
| | - Jiarui Song
- National Engineering Technique Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing, 211816, People's Republic of China
| | - Chenjie Zhu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, No. 5, Xinmofan Road, Nanjing, 210009, People's Republic of China
- National Engineering Technique Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing, 211816, People's Republic of China
| | - Yong Chen
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, No. 5, Xinmofan Road, Nanjing, 210009, People's Republic of China
- National Engineering Technique Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing, 211816, People's Republic of China
| | - Nan Gao
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, No. 5, Xinmofan Road, Nanjing, 210009, People's Republic of China
- National Engineering Technique Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing, 211816, People's Republic of China
| | - Xudong Qu
- Key Laboratory of Combinatorial Biosynthesis and Drug Discovery, Ministry of Education, School of Pharmaceutical Sciences, Wuhan University, Wuhan, People's Republic of China
| | - Hanjie Ying
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, No. 5, Xinmofan Road, Nanjing, 210009, People's Republic of China
- National Engineering Technique Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing, 211816, People's Republic of China
| | - Dong Liu
- State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, No. 5, Xinmofan Road, Nanjing, 210009, People's Republic of China.
- National Engineering Technique Research Center for Biotechnology, College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, No. 30, Puzhu South Road, Nanjing, 211816, People's Republic of China.
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