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Kim WS, Park K, Park JW, Lee SH, Kim JH, Kim YJ, Oh GH, Ko BS, Park JW, Hong C, Yu TS, Kwak IS. Transcriptional Responses of Stress-Related Genes in Pale Chub ( Zacco platypus) Inhabiting Different Aquatic Environments: Application for Biomonitoring Aquatic Ecosystems. Int J Environ Res Public Health 2022; 19:11471. [PMID: 36141743 PMCID: PMC9517483 DOI: 10.3390/ijerph191811471] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 09/07/2022] [Accepted: 09/08/2022] [Indexed: 06/16/2023]
Abstract
Pale chub (Zacco platypus) is a dominant species in urban rivers and reservoirs, and it is used as an indicator to monitor the effects of environmental contaminants. Gene responses at the molecular level can reflect the health of fish challenged with environmental stressors. The objective of this study was to identify correlations between water quality factors and the expression of stress-related genes in Z. platypus from different lake environments (Singal and Juam Lakes). To do so, transcriptional responses of genes involving cellular homeostasis (heat-shock protein 70, HSP70; heat-shock protein 90, HSP90), metal detoxification (metallothionein, MT), and antioxidation (superoxide dismutase, SOD; catalase, CAT) were analyzed in the gill and liver tissues of Z. platypus. HSP70, HSP90, and MT genes were overall upregulated in Z. platypus from Singal Lake, which suffered from poorer water quality than Juam Lake. In addition, gene responses were significantly higher in Singal Lake outflow. Upregulation of HSP70, HSP90, and MT was significantly higher in Z. platypus gills than in the liver tissue. In addition, integrated biomarker response and heatmap analysis determined correlations between expression of biomarker genes or water quality factors and sampling sites of both lakes. These results suggest that stress-related genes used as multiple biomarkers may reflect spatial characteristics and water quality of different lake environments, and they can be used for biomonitoring and ecological risk assessment.
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Affiliation(s)
- Won-Seok Kim
- Department of Ocean Integrated Science, Chonnam National University, Yeosu 59626, Korea
| | - Kiyun Park
- Fisheries Science Institute, Chonnam National University, Yeosu 59626, Korea
| | - Jae-Won Park
- Department of Ocean Integrated Science, Chonnam National University, Yeosu 59626, Korea
| | - Sun-Ho Lee
- Department of Ocean Integrated Science, Chonnam National University, Yeosu 59626, Korea
| | - Ji-Hoon Kim
- Department of Ocean Integrated Science, Chonnam National University, Yeosu 59626, Korea
| | - Yong-Jun Kim
- Department of Ocean Integrated Science, Chonnam National University, Yeosu 59626, Korea
| | - Gun-Hee Oh
- Department of Ocean Integrated Science, Chonnam National University, Yeosu 59626, Korea
| | - Bong-Soon Ko
- Department of Ocean Integrated Science, Chonnam National University, Yeosu 59626, Korea
| | - Ji-Won Park
- Department of Ocean Integrated Science, Chonnam National University, Yeosu 59626, Korea
| | - Cheol Hong
- Department of Ocean Integrated Science, Chonnam National University, Yeosu 59626, Korea
| | - Tae-Sik Yu
- Fisheries Science Institute, Chonnam National University, Yeosu 59626, Korea
| | - Ihn-Sil Kwak
- Department of Ocean Integrated Science, Chonnam National University, Yeosu 59626, Korea
- Fisheries Science Institute, Chonnam National University, Yeosu 59626, Korea
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Choi WA, Oh GH, Kang HA, Chung BH. Improvement of intact human lipocortin-I production in Saccharomyces cerevisiae by inhibiting proteolysis. J Biosci Bioeng 2000; 89:77-80. [PMID: 16232702 DOI: 10.1016/s1389-1723(00)88054-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/1999] [Accepted: 09/27/1999] [Indexed: 10/18/2022]
Abstract
Human lipocortin-I (hLC1), when was expressed as a secretory product in Saccharomyces cerevisiae, was cleaved to a significant extent by endoproteolytic processing, resulting in the accumulation of des1-26-hLC1 in the culture supernatant. This proteolytic cleavage was inhibited significantly by the addition of high concentrations of l-arginine and l-lysine, with a resultant marked improvement in the yield of intact hLC1. When the hLC1 was expressed in S. cerevisiae mutants deficient in one or two of the following endoproteases, Kex2p, Mkc7p and Yps1p (Yap3p), the mutants exhibited no reduction in the extent of hLC1 proteolysis, indicating that these endoproteases are not involved in the proteolytic cleavage of hLC1.
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Affiliation(s)
- W A Choi
- Korea Research Institute of Bioscience and Biotechnology, P.O. Box 115, Yusong, Taejon 305-600, Korea
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Oh GH, Hahm MS, Chung BH. Use of carboxypeptidase Y propeptide as a fusion partner for expression of small polypeptides in Escherichia coli. Protein Expr Purif 1999; 17:428-34. [PMID: 10600462 DOI: 10.1006/prep.1999.1133] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The carboxypeptidase Y (CPY) propeptide from Saccharomyces cerevisiae was developed as a fusion partner for the efficient expression of small polypeptides in Escherichia coli. Six consecutive histidine residues (6xHis) were fused to the N-terminus of the CPY propeptide for the facilitated purification of fusion proteins using immobilized metal ion affinity chromatography. In addition, a methionine or the pentapeptide (Asp)(4)-Lys linker was inserted at the junction between the CPY propeptide and the target polypeptide to release the target polypeptide by digestion with cyanogen bromide or enterokinase. Therapeutically valuable peptide hormones, such as salmon calcitonin precursor (sCAL-Gly), a fragment of human parathyroid hormone (hPTH(1-34)), and human glucagon were successfully expressed in E. coli as fusion polypeptides with the fusion partner. SDS-PAGE analyses showed that the majority of the expressed fusion sCAL-Gly and fusion hPTH(1-34) were present in the form of inclusion bodies, whereas about 66% of the expressed human glucagon was in a soluble form. Almost complete cleavage of the fusion polypeptides was obtained by digestion with enterokinase. Reverse-phase HPLC analyses showed that the target polypeptides released from the fusion proteins were identical to their native forms.
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Affiliation(s)
- G H Oh
- Korea Research Institute of Bioscience and Biotechnology, Yusong, Taejon, 305-600, Korea
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