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Hayes JA, Lunger AW, Sharma AS, Fernez MT, Carrier RL, Koppes AN, Koppes R, Woolston BM. Engineered bacteria titrate hydrogen sulfide and induce concentration-dependent effects on the host in a gut microphysiological system. Cell Rep 2023; 42:113481. [PMID: 37980564 PMCID: PMC10791167 DOI: 10.1016/j.celrep.2023.113481] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Revised: 10/05/2023] [Accepted: 11/06/2023] [Indexed: 11/21/2023] Open
Abstract
Hydrogen sulfide (H2S) is a gaseous microbial metabolite whose role in gut diseases is debated, with contradictory results stemming from experimental difficulties associated with accurate dosing and measuring H2S and the use of model systems that do not accurately represent the human gut environment. Here, we engineer Escherichia coli to titrate H2S across the physiological range in a gut microphysiological system (chip) supportive of the co-culture of microbes and host cells. The chip is engineered to maintain H2S gas tension and enables visualization of co-culture in real time with confocal microscopy. Engineered strains colonize the chip and are metabolically active for 2 days, during which they produce H2S across a 16-fold range and induce changes in host gene expression and metabolism in an H2S-concentration-dependent manner. These results validate a platform for studying the mechanisms underlying microbe-host interactions by enabling experiments that are infeasible with current animal and in vitro models.
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Affiliation(s)
- Justin A Hayes
- Department of Chemical Engineering, Northeastern University, 360 Huntington Avenue, Boston, MA 02115, USA
| | - Anna W Lunger
- Department of Chemical Engineering, Northeastern University, 360 Huntington Avenue, Boston, MA 02115, USA
| | - Aayushi S Sharma
- Department of Mechanical and Industrial Engineering, Northeastern University, 360 Huntington Avenue, Boston, MA 02115, USA; Department of Bioengineering, Northeastern University, 360 Huntington Avenue, Boston, MA 02115, USA
| | - Matthew T Fernez
- Department of Chemical Engineering, Northeastern University, 360 Huntington Avenue, Boston, MA 02115, USA
| | - Rebecca L Carrier
- Department of Chemical Engineering, Northeastern University, 360 Huntington Avenue, Boston, MA 02115, USA; Department of Bioengineering, Northeastern University, 360 Huntington Avenue, Boston, MA 02115, USA; Department of Biology, Northeastern University, 360 Huntington Avenue, Boston, MA 02115, USA
| | - Abigail N Koppes
- Department of Chemical Engineering, Northeastern University, 360 Huntington Avenue, Boston, MA 02115, USA; Department of Bioengineering, Northeastern University, 360 Huntington Avenue, Boston, MA 02115, USA
| | - Ryan Koppes
- Department of Chemical Engineering, Northeastern University, 360 Huntington Avenue, Boston, MA 02115, USA.
| | - Benjamin M Woolston
- Department of Chemical Engineering, Northeastern University, 360 Huntington Avenue, Boston, MA 02115, USA.
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Hayes JA, Lunger AW, Sharma AS, Fernez MT, Koppes AN, Koppes R, Woolston BM. Engineered bacteria titrate hydrogen sulfide and induce concentration-dependent effects on host in a gut microphysiological system. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.05.16.538950. [PMID: 37293009 PMCID: PMC10245736 DOI: 10.1101/2023.05.16.538950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Hydrogen sulfide (H2S) is a gaseous microbial metabolite whose role in gut diseases is debated, largely due to the difficulty in controlling its concentration and the use of non-representative model systems in previous work. Here, we engineered E. coli to titrate H2S controllably across the physiological range in a gut microphysiological system (chip) supportive of the co-culture of microbes and host cells. The chip was designed to maintain H2S gas tension and enable visualization of co-culture in real-time with confocal microscopy. Engineered strains colonized the chip and were metabolically active for two days, during which they produced H2S across a sixteen-fold range and induced changes in host gene expression and metabolism in an H2S concentration-dependent manner. These results validate a novel platform for studying the mechanisms underlying microbe-host interactions, by enabling experiments that are infeasible with current animal and in vitro models.
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Affiliation(s)
- Justin A. Hayes
- Department of Chemical Engineering, Northeastern University, 360 Huntington Ave., Boston, MA 02115, USA
| | - Anna W. Lunger
- Department of Chemical Engineering, Northeastern University, 360 Huntington Ave., Boston, MA 02115, USA
| | - Aayushi S. Sharma
- Department of Mechanical and Industrial Engineering, Northeastern University, 360 Huntington Ave., Boston, MA 02115, USA
- Department of Bioengineering, Northeastern University, 360 Huntington Ave., Boston, MA 02115, USA
| | - Matthew T. Fernez
- Department of Chemical Engineering, Northeastern University, 360 Huntington Ave., Boston, MA 02115, USA
| | - Abigail N. Koppes
- Department of Chemical Engineering, Northeastern University, 360 Huntington Ave., Boston, MA 02115, USA
- Department of Bioengineering, Northeastern University, 360 Huntington Ave., Boston, MA 02115, USA
| | - Ryan Koppes
- Department of Chemical Engineering, Northeastern University, 360 Huntington Ave., Boston, MA 02115, USA
| | - Benjamin M. Woolston
- Department of Chemical Engineering, Northeastern University, 360 Huntington Ave., Boston, MA 02115, USA
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Wang Q, Zhu B, Han Y, Yang X, Xu Y, Cheng Y, Liu T, Wu J, Li S, Ding L, Bai J, Niu Y. Metal ions mediated carbon dots nanoprobe for fluorescent turn-on sensing of N-acetyl-L-cysteine. LUMINESCENCE 2022; 37:1267-1274. [PMID: 35608368 DOI: 10.1002/bio.4292] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Revised: 05/19/2022] [Accepted: 05/20/2022] [Indexed: 11/06/2022]
Abstract
Carbon dots (CDs) was facilely synthesized from aspartic acid through a pyrolysis method in this work. Based on their favorable fluorescence property, CDs was utilized to design a metal ions-mediated fluorescent probe for N-acetyl-L-cysteine (NAC) detection. The fluorescence intensity of CDs was firstly quenched by manganese ion (Mn2+ ) through static quenching effect and subsequently restored by NAC via the combination with Mn2+ owing to the coordination effect. Therefore, the fluorescent turn-on sensing of NAC was actuated based on the fluorescence quenching stimulated by Mn2+ and recovery induced by coordination. The fluorescence recovery efficiencies showed a proportional range to the concentration of NAC in the range of 0.04-5 mmol L-1 and the detection limit was 0.03 mmol L-1 . Further, this metal ions-mediated fluorescent nanoprobe was applied to human urine sample detection and the standard recovery rates were located in the range of 97.62-102.34 %. It was the first time that Mn2+ was used to construct fluorescent nanoprobe for NAC. Compared to other heavy metal ions, Mn2+ with good biosecurity prevented the risk of application, which made the nanoprobe green and bio-practical. The facile synthesis of CDs and novel metal ions-mediated sensing mode made it a promising method for pharmaceutical analysis.
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Affiliation(s)
- Qi Wang
- Chemistry & Chemical Engineering Department, Taiyuan Institute of Technology, Taiyuan, China
| | - Bin Zhu
- Chemistry & Chemical Engineering Department, Taiyuan Institute of Technology, Taiyuan, China
| | - Yejiao Han
- Chemistry & Chemical Engineering Department, Taiyuan Institute of Technology, Taiyuan, China
| | - Xin Yang
- Chemistry & Chemical Engineering Department, Taiyuan Institute of Technology, Taiyuan, China
| | - Yanan Xu
- Chemistry & Chemical Engineering Department, Taiyuan Institute of Technology, Taiyuan, China
| | - Ying Cheng
- Chemistry & Chemical Engineering Department, Taiyuan Institute of Technology, Taiyuan, China
| | - Taotao Liu
- Chemistry & Chemical Engineering Department, Taiyuan Institute of Technology, Taiyuan, China
| | - Jiana Wu
- Department of Environment and Safety Engineering, Taiyuan Institute of Technology, Taiyuan, China
| | - Shengling Li
- Chemistry & Chemical Engineering Department, Taiyuan Institute of Technology, Taiyuan, China
| | - Lifeng Ding
- Chemistry & Chemical Engineering Department, Taiyuan Institute of Technology, Taiyuan, China
| | - Jingjing Bai
- Department of Materials Engineering, Taiyuan Institute of Technology, Taiyuan, China
| | - Yulan Niu
- Chemistry & Chemical Engineering Department, Taiyuan Institute of Technology, Taiyuan, China
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