1
|
Yamaguchi Y, Ikeba K, Yoshida MA, Takagi W. Molecular basis of the unique osmoregulatory strategy in the inshore hagfish, Eptatretus burgeri. Am J Physiol Regul Integr Comp Physiol 2024; 327:R208-R233. [PMID: 38105762 DOI: 10.1152/ajpregu.00166.2023] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2023] [Revised: 12/05/2023] [Accepted: 12/11/2023] [Indexed: 12/19/2023]
Abstract
Hagfishes are characterized by omo- and iono-conforming nature similar to marine invertebrates. Conventionally, hagfishes had been recognized as the most primitive living vertebrate that retains plesiomorphic features. However, some of the "ancestral" features of hagfishes, such as rudimentary eyes and the lack of vertebrae, have been proven to be deceptive. Similarly, by the principle of maximum parsimony, the unique body fluid regulatory strategy of hagfishes seems to be apomorphic, since the lamprey, another cyclostome, adopts osmo- and iono-regulatory mechanisms as in jawed vertebrates. Although hagfishes are unequivocally important in discussing the origin and evolution of the vertebrate osmoregulatory system, the molecular basis for the body fluid homeostasis in hagfishes has been poorly understood. In the present study, we explored this matter in the inshore hagfish, Eptatretus burgeri, by analyzing the transcriptomes obtained from the gill, kidney, and muscle of the animals acclimated to distinct environmental salinities. Together with the measurement of parameters in the muscular fluid compartment, our data indicate that the hagfish possesses an ability to conduct free amino acid (FAA)-based osmoregulation at a cellular level, which is in coordination with the renal and branchial FAA absorption. We also revealed that the hagfish does possess the orthologs of the known osmoregulatory genes and that the transepithelial movement of inorganic ions in the hagfish gill and kidney is more complex than previously thought. These observations pose a challenge to the conventional view that the physiological features of hagfishes have been inherited from the last common ancestor of the extant vertebrates.
Collapse
Affiliation(s)
- Yoko Yamaguchi
- Institute of Agricultural and Life Sciences, Academic Assembly, Shimane University, Matsue, Japan
| | - Kiriko Ikeba
- Laboratory of Physiology, Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Japan
| | - Masa-Aki Yoshida
- Institute of Agricultural and Life Sciences, Academic Assembly, Shimane University, Matsue, Japan
- Marine Biological Science Section, Education and Research Center for Biological Resources, Faculty of Life and Environmental Science, Shimane University, Okinoshima, Japan
| | - Wataru Takagi
- Laboratory of Physiology, Atmosphere and Ocean Research Institute, The University of Tokyo, Kashiwa, Japan
| |
Collapse
|
2
|
Luo J, Frank D, Arcot J. Creating alternative seafood flavour from non-animal ingredients: A review of key flavour molecules relevant to seafood. Food Chem X 2024; 22:101400. [PMID: 38736984 PMCID: PMC11088277 DOI: 10.1016/j.fochx.2024.101400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2024] [Revised: 04/14/2024] [Accepted: 04/17/2024] [Indexed: 05/14/2024] Open
Abstract
This review summarises current knowledge of the molecular basis for flavour profiles of popular seafood types (crustacean (crab, lobster, prawn, etc.), mollusc (oyster, squid, etc.), oily fish (salmon, sardine, etc.) and white fish (barramundi, turbot, etc.)), and provides a foundation for formulating improved plant-based seafood alternative (PBSA) flavours. Key odour-active volatile molecules were identified from a systematic review of published olfactometry studies and taste-active compounds and macronutrient profiles of different seafood species and commercial PBSAs from nutrition databases were compared. Ingredients commonly used in commercial BPSAs and new potential sources of flavouring agents are evaluated. While significant challenges in replicating seafood flavour and texture remain, this review provides some insights into how plant-based ingredients could be applied to improve the acceptability of PBSAs.
Collapse
Affiliation(s)
- Jiaqiang Luo
- Food and Health, School of Chemical Engineering, Faculty of Engineering, UNSW Sydney, Kensington, NSW 2052, Australia
| | | | - Jayashree Arcot
- Food and Health, School of Chemical Engineering, Faculty of Engineering, UNSW Sydney, Kensington, NSW 2052, Australia
| |
Collapse
|
3
|
Oliva R, Ostermeier L, Jaworek MW, Del Vecchio P, Gajardo-Parra N, Cea-Klapp E, Held C, Petraccone L, Winter R. Modulation of protein-saccharide interactions by deep-sea osmolytes under high pressure stress. Int J Biol Macromol 2024; 255:128119. [PMID: 37977458 DOI: 10.1016/j.ijbiomac.2023.128119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Revised: 11/10/2023] [Accepted: 11/14/2023] [Indexed: 11/19/2023]
Abstract
Deep-sea organisms must cope with high hydrostatic pressures (HHP) up to the kbar regime to control their biomolecular processes. To alleviate the adverse effects of HHP on protein stability most organisms use high amounts of osmolytes. Little is known about the effects of these high concentrations on ligand binding. We studied the effect of the deep-sea osmolytes trimethylamine-N-oxide, glycine, and glycine betaine on the binding between lysozyme and the tri-saccharide NAG3, employing experimental and theoretical tools to reveal the combined effect of osmolytes and HHP on the conformational dynamics, hydration changes, and thermodynamics of the binding process. Due to their different chemical makeup, these cosolutes modulate the protein-sugar interaction in different ways, leading to significant changes in the binding constant and its pressure dependence. These findings suggest that deep-sea organisms may down- and up-regulate reactions in response to HHP stress by altering the concentration and type of the intracellular osmolyte.
Collapse
Affiliation(s)
- Rosario Oliva
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia 26, 80126 Naples, Italy.
| | - Lena Ostermeier
- Department of Chemistry and Chemical Biology, Biophysical Chemistry, TU Dortmund University, Otto-Hahn-Str. 4a, 44227 Dortmund, Germany
| | - Michel W Jaworek
- Department of Chemistry and Chemical Biology, Biophysical Chemistry, TU Dortmund University, Otto-Hahn-Str. 4a, 44227 Dortmund, Germany
| | - Pompea Del Vecchio
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia 26, 80126 Naples, Italy
| | - Nicolas Gajardo-Parra
- Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering, TU Dortmund University, Emil-Figge-Str. 70, 44227 Dortmund, Germany
| | - Esteban Cea-Klapp
- Departamento de Ingeniería Química, Faculty of Engineering, Universidad de Concepción, Concepción, Chile
| | - Christoph Held
- Laboratory of Thermodynamics, Department of Biochemical and Chemical Engineering, TU Dortmund University, Emil-Figge-Str. 70, 44227 Dortmund, Germany
| | - Luigi Petraccone
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia 26, 80126 Naples, Italy
| | - Roland Winter
- Department of Chemistry and Chemical Biology, Biophysical Chemistry, TU Dortmund University, Otto-Hahn-Str. 4a, 44227 Dortmund, Germany.
| |
Collapse
|
4
|
Xu W, Zhu C, Gao X, Wu B, Xu H, Hu M, Zeng H, Gan X, Feng C, Zheng J, Bo J, He LS, Qiu Q, Wang W, He S, Wang K. Chromosome-level genome assembly of hadal snailfish reveals mechanisms of deep-sea adaptation in vertebrates. eLife 2023; 12:RP87198. [PMID: 38134226 PMCID: PMC10746142 DOI: 10.7554/elife.87198] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2023] Open
Abstract
As the deepest vertebrate in the ocean, the hadal snailfish (Pseudoliparis swirei), which lives at a depth of 6,000-8,000 m, is a representative case for studying adaptation to extreme environments. Despite some preliminary studies on this species in recent years, including their loss of pigmentation, visual and skeletal calcification genes, and the role of trimethylamine N-oxide in adaptation to high-hydrostatic pressure, it is still unknown how they evolved and why they are among the few vertebrate species that have successfully adapted to the deep-sea environment. Using genomic data from different trenches, we found that the hadal snailfish may have entered and fully adapted to such extreme environments only in the last few million years. Meanwhile, phylogenetic relationships show that they spread into different trenches in the Pacific Ocean within a million years. Comparative genomic analysis has also revealed that the genes associated with perception, circadian rhythms, and metabolism have been extensively modified in the hadal snailfish to adapt to its unique environment. More importantly, the tandem duplication of a gene encoding ferritin significantly increased their tolerance to reactive oxygen species, which may be one of the important factors in their adaptation to high-hydrostatic pressure.
Collapse
Affiliation(s)
- Wenjie Xu
- School of Ecology and Environment, Northwestern Polytechnical UniversityXi'anChina
| | - Chenglong Zhu
- School of Ecology and Environment, Northwestern Polytechnical UniversityXi'anChina
| | - Xueli Gao
- School of Ecology and Environment, Northwestern Polytechnical UniversityXi'anChina
| | - Baosheng Wu
- School of Ecology and Environment, Northwestern Polytechnical UniversityXi'anChina
| | - Han Xu
- Institute of Deep-Sea Science and Engineering, Chinese Academy of SciencesSanyaChina
| | - Mingliang Hu
- School of Ecology and Environment, Northwestern Polytechnical UniversityXi'anChina
| | - Honghui Zeng
- Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of SciencesWuhanChina
| | - Xiaoni Gan
- Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of SciencesWuhanChina
| | - Chenguang Feng
- School of Ecology and Environment, Northwestern Polytechnical UniversityXi'anChina
| | - Jiangmin Zheng
- School of Ecology and Environment, Northwestern Polytechnical UniversityXi'anChina
| | - Jing Bo
- Institute of Deep-Sea Science and Engineering, Chinese Academy of SciencesSanyaChina
| | - Li-Sheng He
- Institute of Deep-Sea Science and Engineering, Chinese Academy of SciencesSanyaChina
| | - Qiang Qiu
- School of Ecology and Environment, Northwestern Polytechnical UniversityXi'anChina
| | - Wen Wang
- School of Ecology and Environment, Northwestern Polytechnical UniversityXi'anChina
| | - Shunping He
- School of Ecology and Environment, Northwestern Polytechnical UniversityXi'anChina
- Institute of Deep-Sea Science and Engineering, Chinese Academy of SciencesSanyaChina
- Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of SciencesWuhanChina
| | - Kun Wang
- School of Ecology and Environment, Northwestern Polytechnical UniversityXi'anChina
| |
Collapse
|
5
|
Peters J, Oliva R, Caliò A, Oger P, Winter R. Effects of Crowding and Cosolutes on Biomolecular Function at Extreme Environmental Conditions. Chem Rev 2023; 123:13441-13488. [PMID: 37943516 DOI: 10.1021/acs.chemrev.3c00432] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2023]
Abstract
The extent of the effect of cellular crowding and cosolutes on the functioning of proteins and cells is manifold and includes the stabilization of the biomolecular systems, the excluded volume effect, and the modulation of molecular dynamics. Simultaneously, it is becoming increasingly clear how important it is to take the environment into account if we are to shed light on biological function under various external conditions. Many biosystems thrive under extreme conditions, including the deep sea and subseafloor crust, and can take advantage of some of the effects of crowding. These relationships have been studied in recent years using various biophysical techniques, including neutron and X-ray scattering, calorimetry, FTIR, UV-vis and fluorescence spectroscopies. Combining knowledge of the structure and conformational dynamics of biomolecules under extreme conditions, such as temperature, high hydrostatic pressure, and high salinity, we highlight the importance of considering all results in the context of the environment. Here we discuss crowding and cosolute effects on proteins, nucleic acids, membranes, and live cells and explain how it is possible to experimentally separate crowding-induced effects from other influences. Such findings will contribute to a better understanding of the homeoviscous adaptation of organisms and the limits of life in general.
Collapse
Affiliation(s)
- Judith Peters
- Univ. Grenoble Alpes, CNRS, LiPhy, 140 rue de la physique, 38400 St Martin d'Hères, France
- Institut Laue Langevin, 71 avenue des Martyrs, 38000 Grenoble, France
- Institut Universitaire de France, 75005 Paris, France
| | - Rosario Oliva
- Department of Chemical Sciences, University of Naples Federico II, Via Cintia 4, 80126 Naples, Italy
| | - Antonino Caliò
- European Synchrotron Radiation Facility, 71 avenue des Martyrs, 38000 Grenoble, France
| | - Philippe Oger
- INSA Lyon, Universite Claude Bernard Lyon1, CNRS, UMR5240, 69621 Villeurbanne, France
| | - Roland Winter
- Department of Chemistry and Chemical Biology, Biophysical Chemistry, TU Dortmund University, Dortmund, Otto-Hahn-Str. 4a, D-44227 Dortmund, Germany
| |
Collapse
|
6
|
An N, Wang H, Li J, He L, Gao Y, Li L, Wang Q, Cui Z, Qu K, Hu Q. The characteristics of trimethylamine N-oxide content in different classes of marine animals over the coastal and offshore areas of China. MARINE POLLUTION BULLETIN 2023; 197:115706. [PMID: 37951126 DOI: 10.1016/j.marpolbul.2023.115706] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 10/17/2023] [Accepted: 10/19/2023] [Indexed: 11/13/2023]
Abstract
Trimethylamine N-oxide (TMAO) is widely present in marine animals. However, the characteristics of TMAO content in different classes of marine animals are insufficiently understood. In this study, the TMAO content in 79 marine animals (48 species, 7 classes) collected in the coastal and offshore areas of China during year 2019-2022 was analysed. The results showed that the TMAO content of the total samples varied from 0 to 139.19 mmol kg-1. The TMAO content in the classes Bivalvia, Gastropoda, Polychaeta and Holothuroidea varied from 0.06 ± 0.09 to 0.38 ± 0.63 mmol kg-1, but it varied from 30.20 ± 24.20 to 75.90 ± 38.59 mmol kg-1 in the classes Crustacea, Cephalopoda, and Osteichthyes. The TMAO content in the latter 3 classes was 2-3 orders of magnitude higher than that of the former 4 classes. It was inferred that the significant difference was related to the food sources or physiological metabolic mechanisms of different classes.
Collapse
Affiliation(s)
- Ning An
- College of fisheries, Tianjin Agricultural University, Tianjin 300392, China; State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, Shandong 266071, China
| | - Hongsheng Wang
- State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, Shandong 266071, China; Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, Shandong 266071, China
| | - Jianwei Li
- CNOOC Energy Technology & Services Limited, Safety & Environmental Protection Branch, Tianjin 300450, China
| | - Lanlan He
- College of fisheries, Tianjin Agricultural University, Tianjin 300392, China; State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, Shandong 266071, China
| | - Yufeng Gao
- College of fisheries, Tianjin Agricultural University, Tianjin 300392, China; State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, Shandong 266071, China
| | - Lingxiao Li
- College of fisheries, Tianjin Agricultural University, Tianjin 300392, China; State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, Shandong 266071, China
| | - Qingkui Wang
- College of fisheries, Tianjin Agricultural University, Tianjin 300392, China.
| | - Zhengguo Cui
- State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, Shandong 266071, China; Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, Shandong 266071, China; Function Laboratory for Marine Fisheries Science and Food Production Processes, Laoshan Laboratory, Qingdao 266237, China
| | - Keming Qu
- State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, Shandong 266071, China; Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, Shandong 266071, China; Function Laboratory for Marine Fisheries Science and Food Production Processes, Laoshan Laboratory, Qingdao 266237, China
| | - Qingjing Hu
- State Key Laboratory of Mariculture Biobreeding and Sustainable Goods, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, Shandong 266071, China; Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao, Shandong 266071, China; Function Laboratory for Marine Fisheries Science and Food Production Processes, Laoshan Laboratory, Qingdao 266237, China.
| |
Collapse
|
7
|
Hu Q, Zhao W, Qu K, An N, Li L, Wei Y, Bai Y, Jiang T, Chen J, Dai F, Wang H, Cui Z. Identifying the key factors affecting the trimethylamine N-oxide content of teleost fishes collected from the marginal seas of China and the epipelagic zone of the northwest Pacific Ocean. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 901:165577. [PMID: 37467983 DOI: 10.1016/j.scitotenv.2023.165577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Revised: 05/24/2023] [Accepted: 07/14/2023] [Indexed: 07/21/2023]
Abstract
To identify the key factors influencing the trimethylamine N-oxide (TMAO) content of teleost fishes living in shallow seas and the epipelagic zone of the deep ocean, the muscle TMAO content was measured in 152 teleost fishes (21 species) collected from the marginal seas of China and the epipelagic zone of the northwest Pacific Ocean (NWPO) during May-July 2021. The results showed that the TMAO content in all fishes varied from 4.99 to 82.97 mmol kg-1, and it varied notably among different species, e.g., the highest average content (72.71 ± 8.22 mmol kg-1 in Argyrosomus argentatus) was 1 order of magnitude higher than the lowest one (Scomber japonicus), but the ratios of the highest content to the lowest content in each species varied from 1.29 to 3.28, suggesting that the interspecific variations in TMAO content were obviously greater than the intraspecific variations. Moreover, no correlation was observed between the TMAO content of the 152 fishes and the corresponding environmental factors of seawater depth, salinity and temperature, indicating that species played a more important role than environmental factors in driving TMAO accumulation. To exclude the influence of species, intraspecies correlations between TMAO content and environmental factors were analyzed. In the marginal seas of China, only ∼8 % of the TMAO content of teleost fishes (1 species) showed a positive correlation with salinity and depth, but ∼50 % of the TMAO content (5 species) was negatively correlated with temperature. Moreover, the TMAO content of the fish increased by 4.66 ± 1.38 % compared with their corresponding intraspecific average values for every 1 °C of temperature decrease. A similar phenomenon was also found in the TMAO content of pelagic teleost fishes in the NWPO, suggesting that temperature was a key environmental factor affecting the TMAO content of teleost fishes in shallow seas and the epipelagic zone of the deep ocean.
Collapse
Affiliation(s)
- Qingjing Hu
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071, China
| | - Wanyu Zhao
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; College of fishery, Tianjin Agricultural University, Tianjin 300392, China
| | - Keming Qu
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071, China
| | - Ning An
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; College of fishery, Tianjin Agricultural University, Tianjin 300392, China
| | - Lingxiao Li
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; College of fishery, Tianjin Agricultural University, Tianjin 300392, China
| | - Yuqiu Wei
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071, China
| | - Ying Bai
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071, China
| | - Tao Jiang
- School of Ocean, Yantai University, Yantai 264005, China
| | - Jufa Chen
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071, China
| | - Fangqun Dai
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071, China
| | - Hongsheng Wang
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China
| | - Zhengguo Cui
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China; Laboratory for Marine Fisheries Science and Food Production Processes, Pilot National Laboratory for Marine Science and Technology (Qingdao), Qingdao 266071, China.
| |
Collapse
|
8
|
Miyazaki T, Ueda H, Ikegami T, Honda A. Upregulation of Taurine Biosynthesis and Bile Acid Conjugation with Taurine through FXR in a Mouse Model with Human-like Bile Acid Composition. Metabolites 2023; 13:824. [PMID: 37512531 PMCID: PMC10385265 DOI: 10.3390/metabo13070824] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 06/21/2023] [Accepted: 07/01/2023] [Indexed: 07/30/2023] Open
Abstract
Taurine, the end product in the sulfur-containing amino acid pathway, is conjugated with bile acids (BAs) in the liver. The rate-limiting enzymes in both taurine synthesis and BA conjugation may be regulated by a nucleus receptor, FXR, that promotes BA homeostasis. However, it is controversial because BAs act as natural FXR agonists or antagonists in humans and mice, respectively, due to the species differences in BA synthesis. The present study evaluated the influences of different BA compositions on both pathways in the liver by comparing Cyp2a12-/-/Cyp2c70-/- mice with a human-like BA composition (DKO) and wild-type (WT) mice. The DKO liver contains abundant natural FXR agonistic BAs, and the taurine-conjugated BA proportion and the taurine concentration were significantly increased, while the total BA concentration was significantly decreased compared to those in the WT liver with natural FXR antagonistic BAs. The mRNA expression levels of the enzymes Bacs and Baat in BA aminations and Cdo and Fmo1 in the taurine synthesis, as well as Fxr and its target gene, Shp, were significantly higher in the DKO liver than in the WT liver. The present study, using a model with a human-like BA composition in the liver, confirmed, for the first time in mice, that both the taurine synthesis and BA amidation pathways are upregulated by FXR activation.
Collapse
Affiliation(s)
- Teruo Miyazaki
- Joint Research Center, Tokyo Medical University Ibaraki Medical Center, Ami 300-0395, Ibaraki, Japan
| | - Hajime Ueda
- Department of Gastroenterology and Hepatology, Tokyo Medical University Ibaraki Medical Center, Ami 300-0395, Ibaraki, Japan
| | - Tadashi Ikegami
- Department of Gastroenterology and Hepatology, Tokyo Medical University Ibaraki Medical Center, Ami 300-0395, Ibaraki, Japan
| | - Akira Honda
- Joint Research Center, Tokyo Medical University Ibaraki Medical Center, Ami 300-0395, Ibaraki, Japan
- Department of Gastroenterology and Hepatology, Tokyo Medical University Ibaraki Medical Center, Ami 300-0395, Ibaraki, Japan
| |
Collapse
|
9
|
Oprzeska-Zingrebe EA, Smiatek J. Basket-type G-quadruplex with two tetrads in the presence of TMAO and urea: A molecular dynamics study. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
10
|
Folberth A, van der Vegt NFA. Influence of TMAO and Pressure on the Folding Equilibrium of TrpCage. J Phys Chem B 2022; 126:8374-8380. [PMID: 36251479 DOI: 10.1021/acs.jpcb.2c04034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Trimethylamine-N-oxide (TMAO) is an osmolyte known for its ability to counteract the pressure denaturation of proteins. Computational studies addressing the molecular mechanisms of TMAO's osmolyte action have however focused exclusively on its protein-stabilizing properties at ambient pressure, neglecting the changes that may occur under high-pressure conditions where TMAO's hydration structure changes to that of increased water binding. Here, we present the first study on the combined effect of pressure and TMAO on a mini-protein, TrpCage. The results showed that at high pressures, nonpolar residues packed less tightly and the salt bridge of TrpCage was destabilized. This effect was mitigated by TMAO which was found to be strongly depleted from the protein/water interface at 1 kbar than at 1 bar ambient pressure, thus counterbalancing the thermodynamically unfavorable effect of elevated pressure in the free energy of folding. TMAO was depleted from charged groups, like the salt bridge-forming ones, and accumulated around hydrophobic groups. Still, it stabilized both kinds of interactions. Furthermore, enthalpically favorable TrpCage-water hydrogen bonds were reduced in the presence of TMAO, causing a stronger destabilization of the unfolded state than the folded state. This shifted the protein-folding equilibrium toward the folded state. Therefore, TMAO showed stabilizing effects on different kinds of groups, which were partially enhanced at high pressures.
Collapse
Affiliation(s)
- Angelina Folberth
- Eduard-Zintl-Institut Fuer Anorganische und Physikalische Chemie, Technical University of Darmstadt, Alarich-Weiss-Strasse 10, 64287 Darmstadt, Germany
| | - Nico F A van der Vegt
- Eduard-Zintl-Institut Fuer Anorganische und Physikalische Chemie, Technical University of Darmstadt, Alarich-Weiss-Strasse 10, 64287 Darmstadt, Germany
| |
Collapse
|
11
|
Righi S, Forti L, Simonini R, Ferrari V, Prevedelli D, Mucci A. Novel Natural Compounds and Their Anatomical Distribution in the Stinging Fireworm Hermodice carunculata (Annelida). Mar Drugs 2022; 20:md20090585. [PMID: 36135774 PMCID: PMC9504318 DOI: 10.3390/md20090585] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2022] [Revised: 09/10/2022] [Accepted: 09/12/2022] [Indexed: 11/16/2022] Open
Abstract
Increasing evidence in the field of bioprospection fosters the necessity of studying poorly investigated poisonous marine invertebrates to expand knowledge on animal venom biology. Among marine annelids, amphinomid fireworms are notorious for their bearded trunk equipped with a powerful stinging capacity. Here, a methodological workflow based on analytical chemistry techniques (compound isolation followed by mass spectrometry and spectroscopy analyses) was applied to gain new insights, leading to the identification and structural elucidation of an array of natural products from Mediterranean specimens of Hermodice carunculata. Eight betaine-derived unprecedented compounds, named “carunculines”, were detected, bearing two terminal ammonium groups tri-and disubstituted at the Cα (A, B) and a series of different alkyl chains (I–VIII). The mixture of chemicals was found in all the body parts of H. carunculata, supporting a mechanism of action triggered by their vehiculation inside the dorsal chaetae, and subsequent injection when chaetae break off on contact. Preliminary investigations to understand adaptive features were also performed, showing a trend in carunculine abundance that fits into the evolutionary history of these worms. These findings shed light on the chemical ecology of amphinomids, giving reasons for the success of H. carunculata in benthic environments and providing promising novel metabolites for biotechnological implications.
Collapse
Affiliation(s)
- Sara Righi
- Department of Life Sciences, University of Modena and Reggio Emilia, Via Campi 213/D, 41125 Modena, Italy
- Correspondence:
| | - Luca Forti
- Department of Life Sciences, University of Modena and Reggio Emilia, Via Campi 103, 41125 Modena, Italy
| | - Roberto Simonini
- Department of Life Sciences, University of Modena and Reggio Emilia, Via Campi 213/D, 41125 Modena, Italy
| | - Valentina Ferrari
- Department of Life Sciences, University of Modena and Reggio Emilia, Via Campi 213/D, 41125 Modena, Italy
| | - Daniela Prevedelli
- Department of Life Sciences, University of Modena and Reggio Emilia, Via Campi 213/D, 41125 Modena, Italy
| | - Adele Mucci
- Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia, Via Campi 103, 41125 Modena, Italy
| |
Collapse
|
12
|
Somero GN. Solutions: how adaptive changes in cellular fluids enable marine life to cope with abiotic stressors. MARINE LIFE SCIENCE & TECHNOLOGY 2022; 4:389-413. [PMID: 37073170 PMCID: PMC10077225 DOI: 10.1007/s42995-022-00140-3] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 06/15/2022] [Indexed: 05/03/2023]
Abstract
The seas confront organisms with a suite of abiotic stressors that pose challenges for physiological activity. Variations in temperature, hydrostatic pressure, and salinity have potential to disrupt structures, and functions of all molecular systems on which life depends. During evolution, sequences of nucleic acids and proteins are adaptively modified to "fit" these macromolecules for function under the particular abiotic conditions of the habitat. Complementing these macromolecular adaptations are alterations in compositions of solutions that bathe macromolecules and affect stabilities of their higher order structures. A primary result of these "micromolecular" adaptations is preservation of optimal balances between conformational rigidity and flexibility of macromolecules. Micromolecular adaptations involve several families of organic osmolytes, with varying effects on macromolecular stability. A given type of osmolyte generally has similar effects on DNA, RNA, proteins and membranes; thus, adaptive regulation of cellular osmolyte pools has a global effect on macromolecules. These effects are mediated largely through influences of osmolytes and macromolecules on water structure and activity. Acclimatory micromolecular responses are often critical in enabling organisms to cope with environmental changes during their lifetimes, for example, during vertical migration in the water column. A species' breadth of environmental tolerance may depend on how effectively it can vary the osmolyte composition of its cellular fluids in the face of stress. Micromolecular adaptations remain an under-appreciated aspect of evolution and acclimatization. Further study can lead to a better understanding of determinants of environmental tolerance ranges and to biotechnological advances in designing improved stabilizers for biological materials.
Collapse
Affiliation(s)
- George N. Somero
- Department of Biology, Hopkins Marine Station, Stanford University, Pacific Grove, CA 93950 USA
| |
Collapse
|
13
|
Molecular Responses to High Hydrostatic Pressure in Eukaryotes: Genetic Insights from Studies on Saccharomyces cerevisiae. BIOLOGY 2021; 10:biology10121305. [PMID: 34943220 PMCID: PMC8698847 DOI: 10.3390/biology10121305] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 11/27/2021] [Accepted: 12/06/2021] [Indexed: 01/19/2023]
Abstract
Simple Summary High hydrostatic pressure generally has an adverse effect on the biological systems of organisms inhabiting lands or shallow sea regions. Deep-sea piezophiles that prefer high hydrostatic pressure for growth have garnered considerable scientific attention. However, the underlying molecular mechanisms of their adaptation to high pressure remains unclear owing to the challenges of culturing and manipulating the genome of piezophiles. Humans also experience high hydrostatic pressure during exercise. A long-term stay in space can cause muscle weakness in astronauts. Thus, the human body indubitably senses mechanical stresses such as hydrostatic pressure and gravity. Nonetheless, the mechanisms underlying biological responses to high pressures are not clearly understood. This review summarizes the occurrence and significance of high-pressure effects in eukaryotic cells and how the cell responds to increasing pressure by particularly focusing on the physiology of S. cerevisiae at the molecular level. Abstract High hydrostatic pressure is common mechanical stress in nature and is also experienced by the human body. Organisms in the Challenger Deep of the Mariana Trench are habitually exposed to pressures up to 110 MPa. Human joints are intermittently exposed to hydrostatic pressures of 3–10 MPa. Pressures less than 50 MPa do not deform or kill the cells. However, high pressure can have various effects on the cell’s biological processes. Although Saccharomyces cerevisiae is not a deep-sea piezophile, it can be used to elucidate the molecular mechanism underlying the cell’s responses to high pressures by applying basic knowledge of the effects of pressure on industrial processes involving microorganisms. We have explored the genes associated with the growth of S. cerevisiae under high pressure by employing functional genomic strategies and transcriptomics analysis and indicated a strong association between high-pressure signaling and the cell’s response to nutrient availability. This review summarizes the occurrence and significance of high-pressure effects on complex metabolic and genetic networks in eukaryotic cells and how the cell responds to increasing pressure by particularly focusing on the physiology of S. cerevisiae at the molecular level. Mechanosensation in humans has also been discussed.
Collapse
|
14
|
Maiti A, Daschakraborty S. How Do Urea and Trimethylamine N-Oxide Influence the Dehydration-Induced Phase Transition of a Lipid Membrane? J Phys Chem B 2021; 125:10149-10165. [PMID: 34486370 DOI: 10.1021/acs.jpcb.1c05852] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Living organisms are often exposed to extreme dehydration, which is detrimental to the structure and function of the cell membrane. The lipid membrane undergoes fluid-to-gel phase transition due to dehydration and thus loses fluidity and functionality. To protect the fluid phase of the bilayer these organisms adopt several strategies. Enhanced production of small polar organic solutes (also called osmolytes) is one such strategy. Urea and trimethylamine N-oxide (TMAO) are two osmolytes found in different organisms combating osmotic stress. Previous experiments have found that both these osmolytes have strong effects on lipid membrane under different hydration conditions. Urea prevents the dehydration-induced phase transition of the lipid membrane by directly interacting with the lipids, while TMAO does not inhibit the phase transition. To provide atomistic insights, we have carried out all-atom molecular dynamics (MD) simulation of a lipid membrane under varying hydration levels and studied the effect of these osmolytes on different structural and dynamic properties of the membrane. This study suggests that urea significantly inhibits the dehydration-induced fluid-to-gel phase transition by strongly interacting with the lipid membrane via hydrogen bonds, which balances the reduced lipid hydration due to the decreasing water content. In contrast, TMAO is excluded from the membrane surface due to unfavorable interaction with the lipids. This induces further dehydration of the lipids which reinforces the fluid-to-gel phase transition. We have also studied the counteractive role of TMAO on the effect of urea on lipid membrane when both the osmolytes are present. TMAO draws some urea molecules out of the membrane and thereby reduces the effect of urea on the lipid membrane at lower hydration levels. This is similar to the counteraction of urea's deleterious effects on protein by TMAO. All these observations are consistent with the experimental results and thus provide deep molecular insights into the role of these osmolytes in protecting the fluid phase of the membrane, the key survival strategy against osmotic-stress-induced dehydration.
Collapse
Affiliation(s)
- Archita Maiti
- Department of Chemistry, Indian Institute of Technology Patna, Bihar 801106, India
| | | |
Collapse
|
15
|
Zhou J, Wang D, Li B, Li X, Lai X, Lei S, Li N, Zhang X. Relationship between Plasma Trimethylamine N-Oxide Levels and Renal Dysfunction in Patients with Hypertension. Kidney Blood Press Res 2021; 46:421-432. [PMID: 34233325 DOI: 10.1159/000513033] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Accepted: 11/12/2020] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION Trimethylamine N-oxide (TMAO) is a metabolite produced by gut bacteria. Although increased TMAO levels have been linked to hypertension (HTN) and chronic kidney disease (CKD) with poor prognosis, no clinical studies have directly addressed the relationship between them. In this study, we investigated the relationship between TMAO and renal dysfunction in hypertensive patients. METHODS We included healthy controls (n = 50), hypertensive patients (n = 46), and hypertensive patients with renal dysfunction (n = 143). Their blood pressure values were taken as the highest measured blood pressure. Renal function was evaluated using the estimated glomerular filtration rate. Plasma TMAO levels were measured using high-performance liquid chromatography tandem mass spectrometry. RESULTS We found significant differences in plasma TMAO levels among the 3 groups (p < 0.01). The plasma TMAO of patients with HTN was significantly higher than that of healthy people, and the plasma TMAO of patients with HTN complicated by renal dysfunction was significantly higher than either of the other groups. Patients in the highest TMAO quartile were at a higher risk of developing CKD stage 5 than those in the lowest quartile. In the receiver operating characteristic curve, the area under the curve of TMAO combined with β 2-macroglobulin for predicting renal dysfunction in patients with HTN was 0.85 (95% confidence interval 0.80-0.90). CONCLUSION An elevated TMAO level reflects higher levels of HTN and more severe renal dysfunction. TMAO, combined with β 2-macroglobulin levels, may assist in diagnosing CKD in hypertensive patients. Plasma TMAO has predictive value for early kidney disease in hypertensive patients.
Collapse
Affiliation(s)
- Jia Zhou
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Dingkun Wang
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Bingong Li
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, China.,Department of Cardiovascular Medicine, Qingdao Municipal Hospital, Qingdao, China
| | - Xuelian Li
- Department of Cardiovascular Medicine, Qingdao Municipal Hospital, Qingdao, China
| | - Xingjun Lai
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Shufang Lei
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Na Li
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Xuting Zhang
- Department of Cardiovascular Medicine, The First Affiliated Hospital of Nanchang University, Nanchang, China
| |
Collapse
|
16
|
Joshi PU, Turpeinen DG, Schroeder M, Jones B, Lyons A, Kriz S, Khaksari M, O'Hagan D, Nikam S, Heldt CL. Osmolyte enhanced aqueous two-phase system for virus purification. Biotechnol Bioeng 2021; 118:3251-3262. [PMID: 34129733 DOI: 10.1002/bit.27849] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2021] [Revised: 05/26/2021] [Accepted: 06/02/2021] [Indexed: 01/15/2023]
Abstract
Due to the high variation in viral surface properties, a platform method for virus purification is still lacking. A potential alternative to the high-cost conventional methods is aqueous two-phase systems (ATPSs). However, optimizing virus purification in ATPS requires a large experimental design space, and the optimized systems are generally found to operate at high ATPS component concentrations. The high concentrations capitalize on hydrophobic and electrostatic interactions to obtain high viral particle yields. This study investigated using osmolytes as driving force enhancers to reduce the high concentration of ATPS components while maintaining high yields. The partitioning behavior of porcine parvovirus (PPV), a nonenveloped mammalian virus, and human immunodeficiency virus-like particle (HIV-VLP), a yeast-expressed enveloped VLP, were studied in a polyethylene glycol (PEG) 12 kDa-citrate system. The partitioning of the virus modalities was enhanced by osmoprotectants glycine and betaine, while trimethylamine N-oxide was ineffective for PPV. The increased partitioning to the PEG-rich phase pertained only to viruses, resulting in high virus purification. Recoveries were 100% for infectious PPV and 92% for the HIV-VLP, with high removal of the contaminant proteins and more than 60% DNA removal when glycine was added. The osmolyte-induced ATPS demonstrated a versatile method for virus purification, irrespective of the expression system.
Collapse
Affiliation(s)
- Pratik U Joshi
- Department of Chemical Engineering, Michigan Technological University, Houghton, Michigan, USA.,Health Research Institute, Michigan Technological University, Houghton, Michigan, USA
| | - Dylan G Turpeinen
- Department of Chemical Engineering, Michigan Technological University, Houghton, Michigan, USA.,Health Research Institute, Michigan Technological University, Houghton, Michigan, USA
| | - Michael Schroeder
- Department of Chemical Engineering, Michigan Technological University, Houghton, Michigan, USA
| | - Bianca Jones
- Department of Biochemistry, University of Detroit-Mercy, Detroit, Michigan, USA
| | - Audrey Lyons
- Department of Chemical Engineering, Michigan Technological University, Houghton, Michigan, USA
| | - Seth Kriz
- Department of Chemical Engineering, Michigan Technological University, Houghton, Michigan, USA.,Health Research Institute, Michigan Technological University, Houghton, Michigan, USA
| | - Maryam Khaksari
- Great Lakes Research Center, Michigan Technological University, Houghton, Michigan, USA
| | | | | | - Caryn L Heldt
- Department of Chemical Engineering, Michigan Technological University, Houghton, Michigan, USA.,Health Research Institute, Michigan Technological University, Houghton, Michigan, USA
| |
Collapse
|
17
|
Mu Y, Bian C, Liu R, Wang Y, Shao G, Li J, Qiu Y, He T, Li W, Ao J, Shi Q, Chen X. Whole genome sequencing of a snailfish from the Yap Trench (~7,000 m) clarifies the molecular mechanisms underlying adaptation to the deep sea. PLoS Genet 2021; 17:e1009530. [PMID: 33983934 PMCID: PMC8118300 DOI: 10.1371/journal.pgen.1009530] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 04/05/2021] [Indexed: 11/25/2022] Open
Abstract
Hadal environments (depths below 6,000 m) are characterized by extremely high hydrostatic pressures, low temperatures, a scarce food supply, and little light. The evolutionary adaptations that allow vertebrates to survive in this extreme environment are poorly understood. Here, we constructed a high-quality reference genome for Yap hadal snailfish (YHS), which was captured at a depth of ~7,000 m in the Yap Trench. The final YHS genome assembly was 731.75 Mb, with a contig N50 of 0.75 Mb and a scaffold N50 of 1.26 Mb. We predicted 24,329 protein-coding genes in the YHS genome, and 24,265 of these genes were successfully functionally annotated. Phylogenetic analyses suggested that YHS diverged from a Mariana Trench snailfish approximately 0.92 million years ago. Many genes associated with DNA repair show evidence of positive selection and have expanded copy numbers in the YHS genome, possibly helping to maintain the integrity of DNA under increased hydrostatic pressure. The levels of trimethylamine N-oxide (TMAO), a potent protein stabilizer, are much higher in the muscles of YHS than in those of shallow-water fish. This difference is perhaps due to the five copies of the TMAO-generating enzyme flavin-containing monooxygenase-3 gene (fmo3) in the YHS genome and the abundance of trimethylamine (TMA)-generating bacteria in the YHS gut. Thus, the high TMAO content might help YHS adapt to high hydrostatic pressure by improving protein stability. Additionally, the evolutionary features of the YHS genes encoding sensory-related proteins are consistent with the scarce food supply and darkness in the hadal environments. These results clarify the molecular mechanisms underlying the adaptation of hadal organisms to the deep-sea environment and provide valuable genomic resources for in-depth investigations of hadal biology. Hadal environments (depths below 6,000 m) are characterized by extremely high hydrostatic pressures, low temperatures, a scarce food supply, and little light. Fish are the only vertebrates inhabiting the hadal zone, and hadal snailfishes have been found in at least five geographically separated marine trenches. However, the genetic mechanisms that allow vertebrates to live in such extreme conditions are not well understood. Here, we constructed a high-quality reference genome for Yap hadal snailfish (YHS) captured at a depth of ~7,000 m in the Yap Trench, using long reads obtained by Pacific Biosciences Sequel sequencing. Comparative genomic analyses revealed that many genes associated with DNA repair show evidence of positive selection and have expanded copy numbers in the YHS genome, which potentially reflect the difficulty of maintaining DNA integrity under high hydrostatic pressure. Moreover, the five copies of the trimethylamine N-oxide (TMAO)-generating enzyme flavin-containing monooxygenase-3 gene (fmo3) and the abundance of trimethylamine (TMA)-generating bacteria in the YHS gut could provide enough TMAO to improve protein stability under hadal conditions. In addition, characteristics of the YHS sensory system genes were consistent with the scarce food supply and darkness in the hadal zone. Our results provide new insights into the molecular mechanisms underlying the adaptation of hadal organisms to the deep-sea environment and valuable genomic resources that will help further clarify hadal adaptations.
Collapse
Affiliation(s)
- Yinnan Mu
- Key Laboratory of Marine Biotechnology of Fujian Province, Institute of Oceanology, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China
| | - Chao Bian
- Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Economic Animals, BGI Academy of Marine Sciences, BGI Marine, Shenzhen, Guangdong, China
| | - Ruoyu Liu
- Key Laboratory of Marine Biotechnology of Fujian Province, Institute of Oceanology, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China
| | - Yuguang Wang
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, Fujian, China
| | - Guangming Shao
- Key Laboratory of Marine Biotechnology of Fujian Province, Institute of Oceanology, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China
| | - Jia Li
- Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Economic Animals, BGI Academy of Marine Sciences, BGI Marine, Shenzhen, Guangdong, China
| | - Ying Qiu
- Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Economic Animals, BGI Academy of Marine Sciences, BGI Marine, Shenzhen, Guangdong, China
| | - Tianliang He
- Key Laboratory of Marine Biotechnology of Fujian Province, Institute of Oceanology, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China
| | - Wanru Li
- Key Laboratory of Marine Biotechnology of Fujian Province, Institute of Oceanology, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China
| | - Jingqun Ao
- Key Laboratory of Marine Biogenetic Resources, Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, Fujian, China
| | - Qiong Shi
- Shenzhen Key Lab of Marine Genomics, Guangdong Provincial Key Lab of Molecular Breeding in Economic Animals, BGI Academy of Marine Sciences, BGI Marine, Shenzhen, Guangdong, China
- * E-mail: (QS); (XC)
| | - Xinhua Chen
- Key Laboratory of Marine Biotechnology of Fujian Province, Institute of Oceanology, Fujian Agriculture and Forestry University, Fuzhou, Fujian, China
- Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, Guangdong, China
- * E-mail: (QS); (XC)
| |
Collapse
|
18
|
Qin QL, Wang ZB, Su HN, Chen XL, Miao J, Wang XJ, Li CY, Zhang XY, Li PY, Wang M, Fang J, Lidbury I, Zhang W, Zhang XH, Yang GP, Chen Y, Zhang YZ. Oxidation of trimethylamine to trimethylamine N-oxide facilitates high hydrostatic pressure tolerance in a generalist bacterial lineage. SCIENCE ADVANCES 2021; 7:7/13/eabf9941. [PMID: 33771875 PMCID: PMC7997507 DOI: 10.1126/sciadv.abf9941] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 02/05/2021] [Indexed: 06/01/2023]
Abstract
High hydrostatic pressure (HHP) is a characteristic environmental factor of the deep ocean. However, it remains unclear how piezotolerant bacteria adapt to HHP. Here, we identify a two-step metabolic pathway to cope with HHP stress in a piezotolerant bacterium. Myroides profundi D25T, obtained from a deep-sea sediment, can take up trimethylamine (TMA) through a previously unidentified TMA transporter, TmaT, and oxidize intracellular TMA into trimethylamine N-oxide (TMAO) by a TMA monooxygenase, MpTmm. The produced TMAO is accumulated in the cell, functioning as a piezolyte, improving both growth and survival at HHP. The function of the TmaT-MpTmm pathway was further confirmed by introducing it into Escherichia coli and Bacillus subtilis Encoded TmaT-like and MpTmm-like sequences extensively exist in marine metagenomes, and other marine Bacteroidetes bacteria containing genes encoding TmaT-like and MpTmm-like proteins also have improved HHP tolerance in the presence of TMA, implying the universality of this HHP tolerance strategy in marine Bacteroidetes.
Collapse
Affiliation(s)
- Qi-Long Qin
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
- College of Marine Life Sciences, and Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao, China
| | - Zhi-Bin Wang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
- School of Environmental Science and Engineering, Shandong University, Qingdao, China
| | - Hai-Nan Su
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Xiu-Lan Chen
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Jie Miao
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Xiu-Juan Wang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Chun-Yang Li
- College of Marine Life Sciences, and Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Xi-Ying Zhang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
| | - Ping-Yi Li
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| | - Min Wang
- College of Marine Life Sciences, and Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao, China
| | - Jiasong Fang
- Shanghai Engineering Research Center of Hadal Science and Technology, College of Marine Sciences, Shanghai Ocean University, Shanghai, China
| | - Ian Lidbury
- School of Life Sciences, University of Warwick, Coventry CV4 7AL, UK
| | - Weipeng Zhang
- College of Marine Life Sciences, and Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao, China
| | - Xiao-Hua Zhang
- College of Marine Life Sciences, and Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao, China
| | - Gui-Peng Yang
- Frontiers Science Center for Deep Ocean Multispheres and Earth System, Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, China
| | - Yin Chen
- School of Life Sciences, University of Warwick, Coventry CV4 7AL, UK
| | - Yu-Zhong Zhang
- College of Marine Life Sciences, and Frontiers Science Center for Deep Ocean Multispheres and Earth System, Ocean University of China, Qingdao, China.
- Laboratory for Marine Biology and Biotechnology, Qingdao National Laboratory for Marine Science and Technology, Qingdao, China
- Marine Biotechnology Research Center, State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| |
Collapse
|
19
|
Ohsawa S, Tokushima T, Okada K. Hydration of the Zwitterionic and Protonated Forms of Glycine Betaine Probed by Soft X-ray Emission Spectroscopy Coupled with Chemometrics. J Phys Chem B 2021; 125:1881-1887. [PMID: 33570403 DOI: 10.1021/acs.jpcb.0c10712] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Soft X-ray absorption and emission spectra of glycine betaine (GB) have been measured at the O K-edge in neutral and strongly acidic solutions. The absorption spectra of the neutral solutions have a resonance peak at 532.6 eV, assigned to the transition to the π* orbital, whereas in the acidic solutions, the peak is shifted by -0.3 eV. The emission spectra taken as a function of the GB concentration have been analyzed by means of a modified classical least-squares regression method to obtain the hydration number of the solute. The analysis is successful when the emission spectra have been acquired at the energy of a slightly detuned resonance, giving 28 and 24 as the minimum values for the zwitterionic and protonated GB, respectively. The number of 28 accords with the reported values for the number of water molecules in the first hydration layer of the zwitterion and is greater than that obtained by other experimental techniques. The obtained numbers are used to discuss the hydration structure of GB with the aid of ab initio molecular orbital calculations. The hydration structure of the protonated form of GB is explored for the first time.
Collapse
Affiliation(s)
- Shohei Ohsawa
- Department of Chemistry, Graduate School of Science, Hiroshima University, Hiroshima, Higashi-Hiroshima 739-8526, Japan.,RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| | | | - Kazumasa Okada
- Department of Chemistry, Graduate School of Science, Hiroshima University, Hiroshima, Higashi-Hiroshima 739-8526, Japan.,RIKEN SPring-8 Center, Sayo, Hyogo 679-5148, Japan
| |
Collapse
|
20
|
Sharma GS, Krishna S, Khan S, Dar TA, Khan KA, Singh LR. Protecting thermodynamic stability of protein: The basic paradigm against stress and unfolded protein response by osmolytes. Int J Biol Macromol 2021; 177:229-240. [PMID: 33607142 DOI: 10.1016/j.ijbiomac.2021.02.102] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 02/12/2021] [Accepted: 02/14/2021] [Indexed: 01/10/2023]
Abstract
Organic osmolytes are known to play important role in stress protection by stabilizing macromolecules and suppressing harmful effects on functional activity. There is existence of several reports in the literature regarding their effects on structural, functional and thermodynamic aspects of many enzymes and the interaction parameters with proteins have been explored. Osmolytes are compatible with enzyme function and therefore, can be accumulated up to several millimolar concentrations. From the thermodynamic point of view, osmolyte raises mid-point of thermal denaturation (Tm) of proteins while having no significant effect on ΔGD° (free energy change at physiological condition). Unfavorable interaction with the peptide backbone due to preferential hydration is the major driving force for folding of unfolded polypeptide in presence of osmolyte. However, the thermodynamic basis of stress protection and origin of compatibility paradigm has been a debatable issue. In the present manuscript, we attempt to elaborate the origin of stress protection and compatibility paradigm of osmolytes based on the effect on thermodynamic stability of proteins. We also infer that protective effects of osmolytes on ΔGD° (of proteins) could also indicate its potential involvement in unfolded protein response and overall stress biology on macromolecular level.
Collapse
Affiliation(s)
- Gurumayum Suraj Sharma
- Department of Botany, Bhaskaracharya College of Applied Sciences, University of Delhi, Delhi, India
| | - Snigdha Krishna
- Dr. B. R. Ambedkar Center for Biomedical Research, University of Delhi, Delhi, India
| | - Sheeza Khan
- School of Life Sciences, B. S. Abdur Rahman Crescent Institute of Science and Technology, Chennai, India
| | - Tanveer A Dar
- Department of Clinical Biochemistry, University of Kashmir, Srinagar, J&K, India
| | - Khurshid A Khan
- School of Life Sciences, B. S. Abdur Rahman Crescent Institute of Science and Technology, Chennai, India
| | | |
Collapse
|
21
|
Maiti A, Daschakraborty S. Effect of TMAO on the Structure and Phase Transition of Lipid Membranes: Potential Role of TMAO in Stabilizing Cell Membranes under Osmotic Stress. J Phys Chem B 2021; 125:1167-1180. [PMID: 33481606 DOI: 10.1021/acs.jpcb.0c08335] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Extremophiles adopt strategies to deal with different environmental stresses, some of which are severely damaging to their cell membrane. To combat high osmotic stress, deep-sea organisms synthesize osmolytes, small polar organic molecules, like trimethylamine-N-oxide (TMAO), and incorporate them in the cell. TMAO is known to protect cells from high osmotic or hydrostatic pressure. Several experimental and simulation studies have revealed the roles of such osmolytes on stabilizing proteins. In contrast, the effect of osmolytes on the lipid membrane is poorly understood and broadly debated. A recent experiment has found strong evidence of the possible role of TMAO in stabilizing lipid membranes. Using the molecular dynamics (MD) simulation technique, we have demonstrated the effect of TMAO on two saturated fully hydrated lipid membranes in their fluid and gel phases. We have captured the impact of TMAO's concentration on the membrane's structural properties along with the fluid/gel phase transition temperatures. On increasing the concentration of TMAO, we see a substantial increase in the packing density of the membrane (estimated by area, thickness, and volume) and enhancement in the orientational order of lipid molecules. Having repulsive interaction with the lipid head group, the TMAO molecules are expelled away from the membrane surface, which induces dehydration of the lipid head groups, increasing the packing density. The addition of TMAO also increases the fluid/gel phase transition temperature of the membrane. All of these results are in close agreement with the experimental observations. This study, therefore, provides a molecular-level understanding of how TMAO can influence the cell membrane of deep-sea organisms and help in combating the osmotic stress condition.
Collapse
Affiliation(s)
- Archita Maiti
- Department of Chemistry, Indian Institute of Technology Patna, Patna, Bihar 801106, India
| | | |
Collapse
|
22
|
Folberth A, Polák J, Heyda J, van der Vegt NFA. Pressure, Peptides, and a Piezolyte: Structural Analysis of the Effects of Pressure and Trimethylamine- N-oxide on the Peptide Solvation Shell. J Phys Chem B 2020; 124:6508-6519. [PMID: 32615760 DOI: 10.1021/acs.jpcb.0c03319] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The osmolyte trimethylamine-N-oxide (TMAO) is able to increase the thermodynamic stability of folded proteins, counteracting pressure denaturation. Herein, we report experimental solubility data on penta-alanine (pAla) in aqueous TMAO solutions (at pH = 7 and pH = 13) together with molecular simulation data for pAla, penta-serine (pSer), and an elastin-like peptide (ELP) sequence (VPGVG) under varying pH and pressure conditions. The effect of the peptide end groups on TMAO-peptide interactions is investigated by comparing the solvation of zwitterionic and negatively charged pentamers with the solvation of pentamers with charge-neutral C- and N-termini and linear, virtually infinite, peptide chains stretched across the periodic boundaries of the simulation cell. The experiments and simulations consistently show that TMAO is net-depleted from the pAla-water interface, but local accumulation of TMAO is observed just outside the first hydration shell of the peptide. While the same observations are also made in the simulations of the zwitterionic pentamers (Ala, Ser, and ELP) and virtually infinite peptide chains (Ala and ELP), weak preferential binding of TMAO is instead observed for pAla with neutral end groups at a 1 M TMAO concentration and for an ELP pentamer with capped neutral end groups at a 0.55 M TMAO concentration studied in previous work (Y.-T. Liao et al. Proc. Natl. Acad. Sci. USA, 2017, 114, 2479-2484). The above observations made at 1 bar ambient pressure remain qualitatively unchanged at 500 bar and 2 kbar. Local accumulation of TMAO correlates with a reduction in the total number of peptide-solvent hydrogen bonds, independent of the peptide's primary sequence and the applied pressure. By weakening water hydrogen bonds with the protein backbone, TMAO indirectly contributes to stabilizing internal hydrogen bonds in proteins, thus providing a protein stabilization mechanism beyond net depletion.
Collapse
Affiliation(s)
- Angelina Folberth
- Eduard-Zintl-Institut fuer Anorganische und Physikalische Chemie, Technical University of Darmstadt, Alarich-Weiss-Strasse 10, 64287 Darmstadt, Germany
| | - Jakub Polák
- Physical Chemistry Department, University of Chemistry and Technology, Prague Technicka 5, 16628 Prague 6, Czech Republic
| | - Jan Heyda
- Physical Chemistry Department, University of Chemistry and Technology, Prague Technicka 5, 16628 Prague 6, Czech Republic
| | - Nico F A van der Vegt
- Eduard-Zintl-Institut fuer Anorganische und Physikalische Chemie, Technical University of Darmstadt, Alarich-Weiss-Strasse 10, 64287 Darmstadt, Germany
| |
Collapse
|
23
|
Sung HL, Nesbitt DJ. High pressure single-molecule FRET studies of the lysine riboswitch: cationic and osmolytic effects on pressure induced denaturation. Phys Chem Chem Phys 2020; 22:15853-15866. [PMID: 32706360 DOI: 10.1039/d0cp01921f] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Deep sea biology is known to thrive at pressures up to ≈1 kbar, which motivates fundamental biophysical studies of biomolecules under such extreme environments. In this work, the conformational equilibrium of the lysine riboswitch has been systematically investigated by single molecule FRET (smFRET) microscopy at pressures up to 1500 bar. The lysine riboswitch preferentially unfolds with increasing pressure, which signals an increase in free volume (ΔV0 > 0) upon folding of the biopolymer. Indeed, the effective lysine binding constant increases quasi-exponentially with pressure rise, which implies a significant weakening of the riboswitch-ligand interaction in a high-pressure environment. The effects of monovalent/divalent cations and osmolytes on folding are also explored to acquire additional insights into cellular mechanisms for adapting to high pressures. For example, we find that although Mg2+ greatly stabilizes folding of the lysine riboswitch (ΔΔG0 < 0), there is negligible impact on changes in free volume (ΔΔV0 ≈ 0) and thus any pressure induced denaturation effects. Conversely, osmolytes (commonly at high concentrations in deep sea marine species) such as the trimethylamine N-oxide (TMAO) significantly reduce free volumes (ΔΔV0 < 0) and thereby diminish pressure-induced denaturation. We speculate that, besides stabilizing RNA structure, enhanced levels of TMAO in cells might increase the dynamic range for competent riboswitch folding by suppressing the pressure-induced denaturation response. This in turn could offer biological advantage for vertical migration of deep-sea species, with impacts on food searching in a resource limited environment.
Collapse
Affiliation(s)
- Hsuan-Lei Sung
- JILA, National Institute of Standards and Technology and University of Colorado, Boulder, CO 80309, USA. and Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO 80309, USA
| | - David J Nesbitt
- JILA, National Institute of Standards and Technology and University of Colorado, Boulder, CO 80309, USA. and Department of Chemistry and Biochemistry, University of Colorado, Boulder, CO 80309, USA and Department of Physics, University of Colorado, Boulder, CO 80309, USA
| |
Collapse
|
24
|
Urinary Dimethylamine (DMA) and Its Precursor Asymmetric Dimethylarginine (ADMA) in Clinical Medicine, in the Context of Nitric Oxide (NO) and Beyond. J Clin Med 2020; 9:jcm9061843. [PMID: 32545708 PMCID: PMC7356952 DOI: 10.3390/jcm9061843] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2020] [Revised: 06/08/2020] [Accepted: 06/09/2020] [Indexed: 02/08/2023] Open
Abstract
Asymmetric protein-arginine dimethylation is a major post-translational modification (PTM) catalyzed by protein-arginine methyltransferase (PRMT). Regular proteolysis releases asymmetric dimethylarginine (ADMA). Of the daily produced ADMA, about 10% are excreted unchanged in the urine. The remaining 90% are hydrolyzed by dimethylarginine dimethylaminohydrolase (DDAH) to L-citrulline and dimethylamine (DMA), which is readily excreted in the urine. The PRMT/DDAH pathway is almost the exclusive origin of urinary ADMA and the major source of urinary DMA. Dietary fish and seafood represent additional abundant sources of urinary DMA. The present article provides an overview of urinary ADMA and DMA reported thus far in epidemiological, clinical and pharmacological studies, in connection with the L-arginine/nitric oxide (NO) pathway and beyond, in neonates, children and adolescents, young and elderly subjects, males and females. Discussed diseases mainly include those relating to the renal and cardiovascular systems such as peripheral arterial occlusive disease, coronary artery disease, chronic kidney disease, rheumatoid arthritis, Becker muscular disease, Duchenne muscular disease (DMD), attention deficit hyperactivity disorder (ADHD), and type I diabetes. Under standardized conditions involving the abstinence of DMA-rich fresh and canned fish and seafood, urinary DMA and ADMA are useful as measures of whole-body asymmetric arginine-dimethylation in health and disease. The creatinine-corrected excretion rates of DMA range from 10 to 80 µmol/mmol in adults and up to 400 µmol/mmol in children and adolescents. The creatinine-corrected excretion rates of ADMA are on average 10 times lower. In general, diseases are associated with higher urinary DMA and ADMA excretion rates, and pharmacological treatment, such as with steroids and creatine (in DMD), decreases their excretion rates, which may be accompanied by a decreased urinary excretion of nitrate, the major metabolite of NO. In healthy subjects and in rheumatoid arthritis patients, the urinary excretion rate of DMA correlates positively with the excretion rate of dihydroxyphenylglycol (DHPG), the major urinary catecholamines metabolite, suggesting a potential interplay in the PRMT/DDAH/NO pathway.
Collapse
|
25
|
Avagyan S, Vasilchuk D, Makhatadze GI. Protein adaptation to high hydrostatic pressure: Computational analysis of the structural proteome. Proteins 2020; 88:584-592. [PMID: 31618488 DOI: 10.1002/prot.25839] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2019] [Revised: 09/11/2019] [Accepted: 09/21/2019] [Indexed: 11/11/2022]
Abstract
Hydrostatic pressure has a vital role in the biological adaptation of the piezophiles, organisms that live under high hydrostatic pressure. However, the mechanisms by which piezophiles are able to adapt their proteins to high hydrostatic pressure is not well understood. One proposed hypothesis is that the volume changes of unfolding (ΔVTot ) for proteins from piezophiles is distinct from those of nonpiezophilic organisms. Since ΔVTot defines pressure dependence of stability, we performed a comprehensive computational analysis of this property for proteins from piezophilic and nonpiezophilic organisms. In addition, we experimentally measured the ΔVTot of acylphosphatases and thioredoxins belonging to piezophilic and nonpiezophilic organisms. Based on this analysis we concluded that there is no difference in ΔVTot for proteins from piezophilic and nonpiezophilic organisms. Finally, we put forward the hypothesis that increased concentrations of osmolytes can provide a systemic increase in pressure stability of proteins from piezophilic organisms and provide experimental thermodynamic evidence in support of this hypothesis.
Collapse
Affiliation(s)
- Samvel Avagyan
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York
- Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, New York
| | - Daniel Vasilchuk
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York
- Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, New York
| | - George I Makhatadze
- Center for Biotechnology and Interdisciplinary Studies, Rensselaer Polytechnic Institute, Troy, New York
- Department of Biological Sciences, Rensselaer Polytechnic Institute, Troy, New York
- Department of Chemistry and Chemical Biology, Rensselaer Polytechnic Institute, Troy, New York
| |
Collapse
|
26
|
Yancey PH. Cellular responses in marine animals to hydrostatic pressure. JOURNAL OF EXPERIMENTAL ZOOLOGY PART 2020; 333:398-420. [DOI: 10.1002/jez.2354] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Revised: 01/31/2020] [Accepted: 02/06/2020] [Indexed: 11/08/2022]
Affiliation(s)
- Paul H. Yancey
- Department of BiologyWhitman CollegeWalla Walla Washington
| |
Collapse
|
27
|
Jaworek MW, Möbitz S, Gao M, Winter R. Stability of the chaperonin system GroEL-GroES under extreme environmental conditions. Phys Chem Chem Phys 2020; 22:3734-3743. [PMID: 32010904 DOI: 10.1039/c9cp06468k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The chaperonin system GroEL-GroES is present in all kingdoms of life and rescues proteins from improper folding and aggregation upon internal and external stress conditions, including high temperatures and pressures. Here, we set out to explore the thermo- and piezostability of GroEL, GroES and the GroEL-GroES complex in the presence of cosolvents, nucleotides and salts employing quantitative FTIR spectroscopy and small-angle X-ray scattering. Owing to its high biological relevance and lack of data, our focus was especially on the effect of pressure on the chaperonin system. The experimental results reveal that the GroEL-GroES complex is remarkably temperature stable with an unfolding temperature beyond 70 °C, which can still be slightly increased by compatible cosolutes like TMAO. Conversely, the pressure stability of GroEL and hence the GroEL-GroES complex is rather limited and much less than that of monomeric proteins. Whereas GroES is pressure stable up to ∼5 kbar, GroEl and the GroEl-GroES complex undergo minor structural changes already beyond 1 kbar, which can be attributed to a dissociation-induced conformational drift. Quite unexpectedly, no significant unfolding of GroEL is observed even up to 10 kbar, however, i.e., the subunits themselves are very pressure stable. As for the physiological relevance, the structural integrity of the chaperonin system is retained in a relatively narrow pressure range, from about 1 to 1000 bar, which is just the pressure range encountered by life on Earth.
Collapse
Affiliation(s)
- Michel W Jaworek
- Physical Chemistry I - Biophysical Chemistry, Faculty of Chemistry and Chemical Biology, Technical University Dortmund, Otto-Hahn-Straße 4a, 44227 Dortmund, Germany.
| | - Simone Möbitz
- Physical Chemistry I - Biophysical Chemistry, Faculty of Chemistry and Chemical Biology, Technical University Dortmund, Otto-Hahn-Straße 4a, 44227 Dortmund, Germany.
| | - Mimi Gao
- Physical Chemistry I - Biophysical Chemistry, Faculty of Chemistry and Chemical Biology, Technical University Dortmund, Otto-Hahn-Straße 4a, 44227 Dortmund, Germany.
| | - Roland Winter
- Physical Chemistry I - Biophysical Chemistry, Faculty of Chemistry and Chemical Biology, Technical University Dortmund, Otto-Hahn-Straße 4a, 44227 Dortmund, Germany.
| |
Collapse
|
28
|
Sung HL, Nesbitt DJ. Single-molecule kinetic studies of DNA hybridization under extreme pressures. Phys Chem Chem Phys 2020; 22:23491-23501. [DOI: 10.1039/d0cp04035e] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Pressure-responsive dynamics of DNA hairpin hybridization/dehybridization is directly visualized at the single molecule level.
Collapse
Affiliation(s)
- Hsuan-Lei Sung
- JILA
- National Institute of Standards and Technology and University of Colorado
- Boulder
- USA
- Department of Chemistry
| | - David J. Nesbitt
- JILA
- National Institute of Standards and Technology and University of Colorado
- Boulder
- USA
- Department of Chemistry
| |
Collapse
|
29
|
Sung HL, Nesbitt DJ. DNA Hairpin Hybridization under Extreme Pressures: A Single-Molecule FRET Study. J Phys Chem B 2019; 124:110-120. [PMID: 31840514 DOI: 10.1021/acs.jpcb.9b10131] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Organisms have evolved to live in a variety of complex environments, which clearly has required cellular biology to accommodate to extreme conditions of hydraulic pressure and elevated temperature. In this work, we exploit single-molecule Forster resonance energy transfer (FRET) spectroscopy to probe structural changes in DNA hairpins as a function of pressure and temperature, which allows us to extract detailed thermodynamic information on changes in free energy (ΔG°), free volume (ΔV°), enthalpy (ΔH°), and entropy (ΔS°) associated with DNA loop formation and sequence-dependent stem hybridization. Specifically, time-correlated single-photon counting experiments on freely diffusing 40A DNA hairpin FRET constructs are performed in a 50 μm × 50 μm square quartz capillary cell pressurized from ambient pressure up to 3 kbar. By pressure-dependent van't Hoff analysis of the equilibrium constants, ΔV° for hybridization of the DNA hairpin can be determined as a function of stem length (nstem = 7-10) with single base-pair resolution, which further motivates a simple linear deconstruction into additive stem (ΔV°stem = ΔV°bp x nstem) and loop (ΔV°loop) contributions. We find that increasing pressure destabilizes the DNA hairpin stem region [ΔV°bp = +1.98(16) cm3/(mol bp)], with additional positive free volume changes [ΔV°loop = +7.0(14) cm3/mol] we ascribe to bending and base stacking disruption of the 40-dA loop. From a van't Hoff temperature-dependent analysis of the DNA 40A hairpin equilibria, the data support a similar additive loop/stem deconstruction of enthalpic (ΔH° = ΔH°loop + ΔH°stem) and entropic (ΔS° = ΔS°loop + ΔS°stem) contributions, which permits insightful comparison with predictions from nearest-neighbor thermodynamic models for DNA duplex formation. In particular, the stem thermodynamics is consistent with exothermically favored (ΔH°stem < 0) and entropically penalized (ΔS°stem < 0) hydrogen bonding but with additional enthalpic (ΔH°loop > 0) and entropic (ΔS°loop > 0) contributions due to loop bending effects consistent with distortion of dA base stacking in the 40-dA linker.
Collapse
Affiliation(s)
- Hsuan-Lei Sung
- JILA, National Institute of Standards and Technology and University of Colorado , Boulder , Colorado 80309 , United States
| | - David J Nesbitt
- JILA, National Institute of Standards and Technology and University of Colorado , Boulder , Colorado 80309 , United States
| |
Collapse
|
30
|
Fedotova MV. Compatible osmolytes - bioprotectants: Is there a common link between their hydration and their protective action under abiotic stresses? J Mol Liq 2019. [DOI: 10.1016/j.molliq.2019.111339] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
|
31
|
Patra S, Schuabb V, Kiesel I, Knop JM, Oliva R, Winter R. Exploring the effects of cosolutes and crowding on the volumetric and kinetic profile of the conformational dynamics of a poly dA loop DNA hairpin: a single-molecule FRET study. Nucleic Acids Res 2019; 47:981-996. [PMID: 30418613 PMCID: PMC6344865 DOI: 10.1093/nar/gky1122] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Accepted: 10/23/2018] [Indexed: 12/19/2022] Open
Abstract
We investigated the volumetric and kinetic profile of the conformational landscape of a poly dA loop DNA hairpin (Hp) in the presence of salts, osmolytes and crowding media, mimicking the intracellular milieu, using single-molecule FRET methodology. Pressure modulation was applied to explore the volumetric and hydrational characteristics of the free-energy landscape of the DNA Hp, but also because pressure is a stress factor many organisms have to cope with, e.g. in the deep sea where pressures even up to the kbar level are encountered. Urea and pressure synergistically destabilize the closed conformation of the DNA Hp due to a lower molar partial volume in the unfolded state. Conversely, multivalent salts, trimethylamine-N-oxide and Ficoll strongly populate the closed state and counteract deteriorating effects of pressure. Complementary smFRET measurements under immobilized conditions at ambient pressure allowed us to dissect the equilibrium data in terms of folding and unfolding rate constants of the conformational transitions, leading to a deeper understanding of the stabilization mechanisms of the cosolutes. Our results show that the free-energy landscape of the DNA Hp is a rugged one, which is markedly affected by the ionic strength of the solution, by preferential interaction and exclusion of cosolvents as well as by pressure.
Collapse
Affiliation(s)
- Satyajit Patra
- Physical Chemistry I - Biophysical Chemistry, Faculty of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn Street 4a, 44227 Dortmund, Germany
| | - Vitor Schuabb
- Physical Chemistry I - Biophysical Chemistry, Faculty of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn Street 4a, 44227 Dortmund, Germany
| | - Irena Kiesel
- Physical Chemistry I - Biophysical Chemistry, Faculty of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn Street 4a, 44227 Dortmund, Germany
| | - Jim-Marcel Knop
- Physical Chemistry I - Biophysical Chemistry, Faculty of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn Street 4a, 44227 Dortmund, Germany
| | - Rosario Oliva
- Department of Chemical Sciences, University of Naples Federico II, Via Cinita, 80126 Naples, Italy
| | - Roland Winter
- Physical Chemistry I - Biophysical Chemistry, Faculty of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn Street 4a, 44227 Dortmund, Germany
| |
Collapse
|
32
|
Metabolomics Studies To Decipher Stress Responses in Mycobacterium smegmatis Point to a Putative Pathway of Methylated Amine Biosynthesis. J Bacteriol 2019; 201:JB.00707-18. [PMID: 31138627 DOI: 10.1128/jb.00707-18] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 05/15/2019] [Indexed: 01/11/2023] Open
Abstract
Mycobacterium smegmatis, the saprophytic soil mycobacterium, is routinely used as a surrogate system to study the human pathogen Mycobacterium tuberculosis It has also been reported as an opportunistic pathogen in immunocompromised hosts. In addition, it can exist in several ecological setups, thereby suggesting its capacity to adapt to a variety of environmental cues. In this study, we employed untargeted proton nuclear magnetic resonance (1H-NMR)-based metabolomics to identify metabolites and metabolic pathways critical for early adaptive responses to acidic stress, oxidative stress, and nutrient starvation in Mycobacterium smegmatis We identified 31, 20, and 46 metabolites that showed significant changes in levels in response to acidic, oxidative, and nutrient starvation stresses, respectively. Pathway analyses showed significant perturbations in purine-pyrimidine, amino-acid, nicotinate-nicotinamide, and energy metabolism pathways. Besides these, differential levels of intermediary metabolites involved in α-glucan biosynthesis pathway were observed. We also detected high levels of organic osmolytes, methylamine, and betaine during nutrient starvation and oxidative stress. Further, tracing the differential levels of these osmolytes through computational search tools, gene expression studies (using reverse transcription-PCR [RT-PCR]), and enzyme assays, we detected the presence of a putative pathway of biosynthesis of betaine, methylamine, and dimethylamine previously unreported in Mycobacterium smegmatis IMPORTANCE Alterations in metabolite levels provide fast and direct means to regulate enzymatic reactions and, therefore, metabolic pathways. This study documents, for the first time, the metabolic changes that occur in Mycobacterium smegmatis as a response to three stresses, namely, acidic stress, oxidative stress, and nutrient starvation. These stresses are also faced by intracellular mycobacteria during infection and therefore may be extended to frame therapeutic interventions for pathogenic mycobacteria. In addition to the purine-pyrimidine, amino acid, nicotinate-nicotinamide, and energy metabolism pathways that were found to be affected in response to different stresses, a novel putative methylamine biosynthesis pathway was identified to be present in Mycobacterium smegmatis.
Collapse
|
33
|
Al-Ayoubi SR, Schummel PH, Cisse A, Seydel T, Peters J, Winter R. Osmolytes modify protein dynamics and function of tetrameric lactate dehydrogenase upon pressurization. Phys Chem Chem Phys 2019; 21:12806-12817. [PMID: 31165827 DOI: 10.1039/c9cp02310k] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
We present a study of the combined effects of natural cosolvents (TMAO, glycine, urea) and pressure on the activity of the tetrameric enzyme lactate dehydrogenase (LDH). To this end, high-pressure stopped-flow methodology in concert with fast UV/Vis spectroscopic detection of product formation was applied. To reveal possible pressure effects on the stability and dynamics of the enzyme, FTIR spectroscopic and neutron scattering measurements were carried out. In neat buffer solution, the catalytic turnover number of the enzyme, kcat, increases up to 1000 bar, the pressure range where dissociation of the tetrameric species to dimers sets in. Accordingly, we obtain a negative activation volume, ΔV# = -45.3 mL mol-1. Further, the enzyme substrate complex has a larger volume compared to the enzyme and substrate in the unbound state. The neutron scattering data show that changes in the fast internal dynamics of the enzyme are not responsible for the increase of kcat upon compression. Whereas the magnitude of kcat is similar in the presence of the osmolytes, the pressure of deactivation is modulated by the addition of cosolvents. TMAO and glycine increase the pressure of deactivation, and in accordance with the observed stabilizing effect both cosolvents exhibit against denaturation and/or dissociation of proteins. While urea does not markedly affect the magnitude of the Michaelis constant, KM, both 1 M TMAO and 1 M glycine exhibit smaller KM values of about 0.07 mM and 0.05 mM below about 1 kbar. Such positive effect on the substrate affinity could be rationalized by the effect the two cosolutes impose on the thermodynamic activities of the reactants, which reflect changes in water-mediated intermolecular interactions. Our data show that the intracellular milieu, i.e., the solution conditions that have evolved, may be sufficient to maintain enzymatic activity under extreme environmental conditions, including the whole pressure range encountered on Earth.
Collapse
Affiliation(s)
- Samy R Al-Ayoubi
- Physical Chemistry I - Biophysical Chemistry, Faculty of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn-Str. 4a, 44227 Dortmund, Germany.
| | | | | | | | | | | |
Collapse
|
34
|
Arns L, Knop JM, Patra S, Anders C, Winter R. Single-molecule insights into the temperature and pressure dependent conformational dynamics of nucleic acids in the presence of crowders and osmolytes. Biophys Chem 2019; 251:106190. [PMID: 31146215 DOI: 10.1016/j.bpc.2019.106190] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Revised: 05/20/2019] [Accepted: 05/20/2019] [Indexed: 11/19/2022]
Abstract
In this review we discuss results from temperature and pressure dependent single-molecule Förster resonance energy transfer (smFRET) studies on nucleic acids in the presence of macromolecular crowders and organic osmolytes. As representative examples, we have chosen fragments of both DNAs and RNAs, i.e., a synthetic DNA hairpin, a human telomeric G-quadruplex and the microROSE RNA hairpin. To mimic the effects of intracellular components, our studies include the macromolecular crowding agent Ficoll, a copolymer of sucrose and epichlorohydrin, and the organic osmolytes trimethylamine N-oxide, urea and glycine as well as natural occurring osmolyte mixtures from deep sea organisms. Furthermore, the impact of mutations in an RNA sequence on the conformational dynamics is examined. Different from proteins, the effects of the osmolytes and crowding agents seem to strongly dependent on the structure and chemical make-up of the nucleic acid.
Collapse
Affiliation(s)
- Loana Arns
- TU Dortmund University, Faculty of Chemistry and Chemical Biology, Physical Chemistry, Otto-Hahn-Str. 4a, D-44227 Dortmund, Germany
| | - Jim-Marcel Knop
- TU Dortmund University, Faculty of Chemistry and Chemical Biology, Physical Chemistry, Otto-Hahn-Str. 4a, D-44227 Dortmund, Germany
| | - Satyajit Patra
- Aix Marseille Université, CNRS, Centralle Marseille, Institut Fresnel, F-13013 Marseille, France
| | - Christian Anders
- TU Dortmund University, Faculty of Chemistry and Chemical Biology, Physical Chemistry, Otto-Hahn-Str. 4a, D-44227 Dortmund, Germany
| | - Roland Winter
- TU Dortmund University, Faculty of Chemistry and Chemical Biology, Physical Chemistry, Otto-Hahn-Str. 4a, D-44227 Dortmund, Germany.
| |
Collapse
|
35
|
Wang K, Shen Y, Yang Y, Gan X, Liu G, Hu K, Li Y, Gao Z, Zhu L, Yan G, He L, Shan X, Yang L, Lu S, Zeng H, Pan X, Liu C, Yuan Y, Feng C, Xu W, Zhu C, Xiao W, Dong Y, Wang W, Qiu Q, He S. Morphology and genome of a snailfish from the Mariana Trench provide insights into deep-sea adaptation. Nat Ecol Evol 2019; 3:823-833. [PMID: 30988486 DOI: 10.1038/s41559-019-0864-8] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2018] [Accepted: 03/06/2019] [Indexed: 12/30/2022]
Abstract
It is largely unknown how living organisms-especially vertebrates-survive and thrive in the coldness, darkness and high pressures of the hadal zone. Here, we describe the unique morphology and genome of Pseudoliparis swirei-a recently described snailfish species living below a depth of 6,000 m in the Mariana Trench. Unlike closely related shallow sea species, P. swirei has transparent, unpigmented skin and scales, thin and incompletely ossified bones, an inflated stomach and a non-closed skull. Phylogenetic analyses show that P. swirei diverged from a close relative living near the sea surface about 20 million years ago and has abundant genetic diversity. Genomic analyses reveal that: (1) the bone Gla protein (bglap) gene has a frameshift mutation that may cause early termination of cartilage calcification; (2) cell membrane fluidity and transport protein activity in P. swirei may have been enhanced by changes in protein sequences and gene expansion; and (3) the stability of its proteins may have been increased by critical mutations in the trimethylamine N-oxide-synthesizing enzyme and hsp90 chaperone protein. Our results provide insights into the morphological, physiological and molecular evolution of hadal vertebrates.
Collapse
Affiliation(s)
- Kun Wang
- Center for Ecological and Environmental Sciences, Northwestern Polytechnical University, Xi'an, China.,Institute of Deep Sea Science and Engineering, Chinese Academy of Sciences, Sanya, China
| | - Yanjun Shen
- Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China.,University of Chinese Academy of Sciences, Beijing, China
| | - Yongzhi Yang
- State Key Laboratory of Grassland Agro-Ecosystems, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Xiaoni Gan
- Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Guichun Liu
- Center for Ecological and Environmental Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Kuang Hu
- Center for Ecological and Environmental Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Yongxin Li
- Center for Ecological and Environmental Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Zhaoming Gao
- Institute of Deep Sea Science and Engineering, Chinese Academy of Sciences, Sanya, China
| | - Li Zhu
- State Key Laboratory of Grassland Agro-Ecosystems, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Guoyong Yan
- Institute of Deep Sea Science and Engineering, Chinese Academy of Sciences, Sanya, China
| | - Lisheng He
- Institute of Deep Sea Science and Engineering, Chinese Academy of Sciences, Sanya, China
| | - Xiujuan Shan
- Key Laboratory of Sustainable Development of Marine Fisheries, Ministry of Agriculture and Rural Affairs, Qingdao, China
| | - Liandong Yang
- Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Suxiang Lu
- Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Honghui Zeng
- Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Xiangyu Pan
- College of Animal Science and Technology, Northwest A&F University, Xianyang, China
| | - Chang Liu
- Center for Ecological and Environmental Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Yuan Yuan
- Center for Ecological and Environmental Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Chenguang Feng
- Center for Ecological and Environmental Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Wenjie Xu
- Center for Ecological and Environmental Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Chenglong Zhu
- Center for Ecological and Environmental Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Wuhan Xiao
- Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Yang Dong
- Biological Big Data College, Yunnan Agricultural University, Kunming, China
| | - Wen Wang
- Center for Ecological and Environmental Sciences, Northwestern Polytechnical University, Xi'an, China. .,Qingdao Research Institute, Northwestern Polytechnical University, Qingdao, China. .,Center for Excellence in Animal Evolution and Genetics, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China.
| | - Qiang Qiu
- Center for Ecological and Environmental Sciences, Northwestern Polytechnical University, Xi'an, China. .,State Key Laboratory of Grassland Agro-Ecosystems, School of Life Sciences, Lanzhou University, Lanzhou, China. .,Qingdao Research Institute, Northwestern Polytechnical University, Qingdao, China.
| | - Shunping He
- Institute of Deep Sea Science and Engineering, Chinese Academy of Sciences, Sanya, China. .,Key Laboratory of Aquatic Biodiversity and Conservation, Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China. .,University of Chinese Academy of Sciences, Beijing, China. .,Center for Excellence in Animal Evolution and Genetics, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming, China.
| |
Collapse
|
36
|
Walker EJ, Bettinger JQ, Welle KA, Hryhorenko JR, Ghaemmaghami S. Global analysis of methionine oxidation provides a census of folding stabilities for the human proteome. Proc Natl Acad Sci U S A 2019; 116:6081-6090. [PMID: 30846556 PMCID: PMC6442572 DOI: 10.1073/pnas.1819851116] [Citation(s) in RCA: 60] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
The stability of proteins influences their tendency to aggregate, undergo degradation, or become modified in cells. Despite their significance to understanding protein folding and function, quantitative analyses of thermodynamic stabilities have been mostly limited to soluble proteins in purified systems. We have used a highly multiplexed proteomics approach, based on analyses of methionine oxidation rates, to quantify stabilities of ∼10,000 unique regions within ∼3,000 proteins in human cell extracts. The data identify lysosomal and extracellular proteins as the most stable ontological subsets of the proteome. We show that the stability of proteins impacts their tendency to become oxidized and is globally altered by the osmolyte trimethylamine N-oxide (TMAO). We also show that most proteins designated as intrinsically disordered retain their unfolded structure in the complex environment of the cell. Together, the data provide a census of the stability of the human proteome and validate a methodology for global quantitation of folding thermodynamics.
Collapse
Affiliation(s)
- Ethan J Walker
- Department of Biology, University of Rochester, NY 14627
- Department of Biochemistry, University of Rochester Medical Center, NY 14627
| | | | - Kevin A Welle
- Mass Spectrometry Resource Laboratory, University of Rochester Medical Center, NY 14627
| | - Jennifer R Hryhorenko
- Mass Spectrometry Resource Laboratory, University of Rochester Medical Center, NY 14627
| | - Sina Ghaemmaghami
- Department of Biology, University of Rochester, NY 14627;
- Mass Spectrometry Resource Laboratory, University of Rochester Medical Center, NY 14627
| |
Collapse
|
37
|
Thiotaurine: From Chemical and Biological Properties to Role in H2S Signaling. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2019; 1155:755-771. [DOI: 10.1007/978-981-13-8023-5_66] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
|
38
|
Rakowska PW, Kogut M, Czub J, Stangret J. Effect of osmolytes of different type on DNA behavior in aqueous solution. Experimental and theoretical studies. J Mol Liq 2018. [DOI: 10.1016/j.molliq.2018.08.106] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
|
39
|
Jaworek MW, Schuabb V, Winter R. Pressure and cosolvent modulation of the catalytic activity of amyloid fibrils. Chem Commun (Camb) 2018; 54:5696-5699. [PMID: 29691524 DOI: 10.1039/c8cc00699g] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
We report on the effects of pressure and cosolvents on the catalytic activity of a designed amyloid fibril by applying a high-pressure stopped-flow methodology with rapid spectroscopic detection. FTIR spectroscopic data revealed a remarkable pressure and temperature stability of the fibrillar catalyst. The activity is further enhanced by osmolytes and macromolecular crowding.
Collapse
Affiliation(s)
- Michel W Jaworek
- Faculty of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn-Str. 4a, 44227 Dortmund, Germany.
| | | | | |
Collapse
|
40
|
Julius K, Weine J, Berghaus M, König N, Gao M, Latarius J, Paulus M, Schroer MA, Tolan M, Winter R. Water-Mediated Protein-Protein Interactions at High Pressures are Controlled by a Deep-Sea Osmolyte. PHYSICAL REVIEW LETTERS 2018; 121:038101. [PMID: 30085800 DOI: 10.1103/physrevlett.121.038101] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Indexed: 06/08/2023]
Abstract
The influence of natural cosolvent mixtures on the pressure-dependent structure and protein-protein interaction potential of dense protein solutions is studied and analyzed using small-angle X-ray scattering in combination with a liquid-state theoretical approach. The deep-sea osmolyte trimethylamine-N-oxide is shown to play a crucial and singular role in its ability to not only guarantee sustainability of the native protein's folded state under harsh environmental conditions, but it also controls water-mediated intermolecular interactions at high pressure, thereby preventing contact formation and hence aggregation of proteins.
Collapse
Affiliation(s)
- Karin Julius
- Faculty of Physics/DELTA, TU Dortmund University, 44221 Dortmund, Germany
| | - Jonathan Weine
- Faculty of Physics/DELTA, TU Dortmund University, 44221 Dortmund, Germany
| | - Melanie Berghaus
- Faculty of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn-Strasse 4a, 44227 Dortmund, Germany
| | - Nico König
- Faculty of Physics/DELTA, TU Dortmund University, 44221 Dortmund, Germany
| | - Mimi Gao
- Faculty of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn-Strasse 4a, 44227 Dortmund, Germany
| | - Jan Latarius
- Faculty of Physics/DELTA, TU Dortmund University, 44221 Dortmund, Germany
| | - Michael Paulus
- Faculty of Physics/DELTA, TU Dortmund University, 44221 Dortmund, Germany
| | - Martin A Schroer
- European Molecular Biology Laboratory (EMBL) Hamburg c/o DESY, Notkestrasse 85, 22607 Hamburg, Germany
| | - Metin Tolan
- Faculty of Physics/DELTA, TU Dortmund University, 44221 Dortmund, Germany
| | - Roland Winter
- Faculty of Chemistry and Chemical Biology, TU Dortmund University, Otto-Hahn-Strasse 4a, 44227 Dortmund, Germany
| |
Collapse
|
41
|
Lan Y, Sun J, Xu T, Chen C, Tian R, Qiu JW, Qian PY. De novo transcriptome assembly and positive selection analysis of an individual deep-sea fish. BMC Genomics 2018; 19:394. [PMID: 29793428 PMCID: PMC5968573 DOI: 10.1186/s12864-018-4720-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Accepted: 04/23/2018] [Indexed: 11/20/2022] Open
Abstract
Background High hydrostatic pressure and low temperatures make the deep sea a harsh environment for life forms. Actin organization and microtubules assembly, which are essential for intracellular transport and cell motility, can be disrupted by high hydrostatic pressure. High hydrostatic pressure can also damage DNA. Nucleic acids exposed to low temperatures can form secondary structures that hinder genetic information processing. To study how deep-sea creatures adapt to such a hostile environment, one of the most straightforward ways is to sequence and compare their genes with those of their shallow-water relatives. Results We captured an individual of the fish species Aldrovandia affinis, which is a typical deep-sea inhabitant, from the Okinawa Trough at a depth of 1550 m using a remotely operated vehicle (ROV). We sequenced its transcriptome and analyzed its molecular adaptation. We obtained 27,633 protein coding sequences using an Illumina platform and compared them with those of several shallow-water fish species. Analysis of 4918 single-copy orthologs identified 138 positively selected genes in A. affinis, including genes involved in microtubule regulation. Particularly, functional domains related to cold shock as well as DNA repair are exposed to positive selection pressure in both deep-sea fish and hadal amphipod. Conclusions Overall, we have identified a set of positively selected genes related to cytoskeleton structures, DNA repair and genetic information processing, which shed light on molecular adaptation to the deep sea. These results suggest that amino acid substitutions of these positively selected genes may contribute crucially to the adaptation of deep-sea animals. Additionally, we provide a high-quality transcriptome of a deep-sea fish for future deep-sea studies. Electronic supplementary material The online version of this article (10.1186/s12864-018-4720-z) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Yi Lan
- Department of Ocean Science and Division of Life Science, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Jin Sun
- Department of Ocean Science and Division of Life Science, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Ting Xu
- Department of Biology, Hong Kong Baptist University, Hong Kong, China
| | - Chong Chen
- Japan Agency for Marine-Earth Science and Technology (JAMSTEC), 2-15 Natsushima-cho, Yokosuka, Kanagawa, 237-0061, Japan
| | - Renmao Tian
- Department of Ocean Science and Division of Life Science, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
| | - Jian-Wen Qiu
- Department of Biology, Hong Kong Baptist University, Hong Kong, China
| | - Pei-Yuan Qian
- Department of Ocean Science and Division of Life Science, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China.
| |
Collapse
|
42
|
Sun XB, Lim GT, Lee J, Wan JX, Lin HZ, Yang JM, Wang Q, Park YD. Effects of osmolytes on the refolding of recombinant Pelodiscus sinensis brain-type creatine kinase. Process Biochem 2018. [DOI: 10.1016/j.procbio.2018.02.027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
43
|
Rani A, Venkatesu P. Changing relations between proteins and osmolytes: a choice of nature. Phys Chem Chem Phys 2018; 20:20315-20333. [DOI: 10.1039/c8cp02949k] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The stabilization and destabilization of the protein in the presence of any additive is mainly attributed to its preferential exclusion from protein surface and its preferential binding to the protein surface, respectively.
Collapse
Affiliation(s)
- Anjeeta Rani
- Department of Chemistry
- University of Delhi
- Delhi 110 007
- India
| | | |
Collapse
|
44
|
Jaworek MW, Schuabb V, Winter R. The effects of glycine, TMAO and osmolyte mixtures on the pressure dependent enzymatic activity of α-chymotrypsin. Phys Chem Chem Phys 2018; 20:1347-1354. [DOI: 10.1039/c7cp06042d] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Different natural osmolytes modulate the pressure dependent enzyme kinetics in different ways.
Collapse
Affiliation(s)
- Michel W. Jaworek
- Physical Chemistry I – Biophysical Chemistry
- Faculty of Chemistry and Chemical Biology
- Technical University Dortmund
- 44227 Dortmund
- Germany
| | - Vitor Schuabb
- Physical Chemistry I – Biophysical Chemistry
- Faculty of Chemistry and Chemical Biology
- Technical University Dortmund
- 44227 Dortmund
- Germany
| | - Roland Winter
- Physical Chemistry I – Biophysical Chemistry
- Faculty of Chemistry and Chemical Biology
- Technical University Dortmund
- 44227 Dortmund
- Germany
| |
Collapse
|
45
|
Bruździak P, Panuszko A, Kaczkowska E, Piotrowski B, Daghir A, Demkowicz S, Stangret J. Taurine as a water structure breaker and protein stabilizer. Amino Acids 2018; 50:125-140. [PMID: 29043510 PMCID: PMC5762795 DOI: 10.1007/s00726-017-2499-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2017] [Accepted: 09/26/2017] [Indexed: 12/24/2022]
Abstract
The enhancing effect on the water structure has been confirmed for most of the osmolytes exhibiting both stabilizing and destabilizing properties in regard to proteins. The presented work concerns osmolytes, which should be classified as "structure breaking" solutes: taurine and N,N,N-trimethyltaurine (TMT). Here, we combine FTIR spectroscopy, DSC calorimetry and DFT calculations to gain an insight into the interactions between osmolytes and two proteins: lysozyme and ubiquitin. Despite high structural similarity, both osmolytes exert different influence on protein stability: taurine is a stabilizer, TMT is a denaturant. We show also that taurine amino group interacts directly with the side chains of proteins, whereas TMT does not interact with proteins at all. Although two solutes weaken on average the structure of the surrounding water, their hydration spheres are different. Taurine is surrounded by two populations of water molecules: bonded with weak H-bonds around sulfonate group, and strongly bonded around amino group. The strong hydrogen-bonded network of water molecules around the amino group of taurine further improves properties of enhanced protein hydration sphere and stabilizes the native protein form. Direct interactions of this group with surface side chains provide a proper orientation of taurine and prevents the [Formula: see text] group from negative influence. The weakened [Formula: see text] hydration sphere of TMT breaks up the hydrogen-bonded network of water around the protein and destabilizes it. However, TMT at low concentration stabilize both proteins to a small extent. This effect can be attributed to an actual osmophobic effect which is overcome if the concentration increases.
Collapse
Affiliation(s)
- P Bruździak
- Department of Physical Chemistry, Chemical Faculty, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland.
| | - A Panuszko
- Department of Physical Chemistry, Chemical Faculty, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland
| | - E Kaczkowska
- Department of Physical Chemistry, Chemical Faculty, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland
| | - B Piotrowski
- Department of Physical Chemistry, Chemical Faculty, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland
| | - A Daghir
- Department of Physical Chemistry, Chemical Faculty, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland
| | - S Demkowicz
- Department of Organic Chemistry, Chemical Faculty, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland
| | - J Stangret
- Department of Physical Chemistry, Chemical Faculty, Gdańsk University of Technology, Narutowicza 11/12, 80-233, Gdańsk, Poland
| |
Collapse
|
46
|
Patra S, Anders C, Schummel PH, Winter R. Antagonistic effects of natural osmolyte mixtures and hydrostatic pressure on the conformational dynamics of a DNA hairpin probed at the single-molecule level. Phys Chem Chem Phys 2018; 20:13159-13170. [DOI: 10.1039/c8cp00907d] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Osmolyte mixtures from deep sea organisms are able to rescue nucleic acids from pressure-induced unfolding.
Collapse
Affiliation(s)
- Satyajit Patra
- Physical Chemistry I – Biophysical Chemistry
- Faculty of Chemistry and Chemical Biology
- TU Dortmund University
- D-44227 Dortmund
- Germany
| | - Christian Anders
- Physical Chemistry I – Biophysical Chemistry
- Faculty of Chemistry and Chemical Biology
- TU Dortmund University
- D-44227 Dortmund
- Germany
| | - Paul Hendrik Schummel
- Physical Chemistry I – Biophysical Chemistry
- Faculty of Chemistry and Chemical Biology
- TU Dortmund University
- D-44227 Dortmund
- Germany
| | - Roland Winter
- Physical Chemistry I – Biophysical Chemistry
- Faculty of Chemistry and Chemical Biology
- TU Dortmund University
- D-44227 Dortmund
- Germany
| |
Collapse
|
47
|
The Effect of Natural Osmolyte Mixtures on the Temperature-Pressure Stability of the Protein RNase A. ACTA ACUST UNITED AC 2017. [DOI: 10.1515/zpch-2017-1039] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
In biological cells, osmolytes appear as complex mixtures with variable compositions, depending on the particular environmental conditions of the organism. Based on various spectroscopic, thermodynamic and small-angle scattering data, we explored the effect of two different natural osmolyte mixtures, which are found in shallow-water and deep-sea shrimps, on the temperature and pressure stability of a typical monomeric protein, RNase A. Both natural osmolyte mixtures stabilize the protein against thermal and pressure denaturation. This effect seems to be mainly caused by the major osmolyte components of the osmolyte mixtures, i.e. by glycine and trimethylamine-N-oxide (TMAO), respectively. A minor compaction of the structure, in particular in the unfolded state, seems to be largely due to TMAO. Differences in thermodynamic properties observed for glycine and TMAO, and hence also for the two osmolyte mixtures, are most likely due to different solvation properties and interactions with the protein. Different from TMAO, glycine seems to interact with the amino acid side chains and/or the backbone of the protein, thus competing with hydration water and leading to a less hydrated protein surface.
Collapse
|
48
|
Bockus AB, Seibel BA. Synthetic capacity does not predict elasmobranchs' ability to maintain trimethylamine oxide without a dietary contribution. Comp Biochem Physiol A Mol Integr Physiol 2017; 217:35-42. [PMID: 29248570 DOI: 10.1016/j.cbpa.2017.12.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Revised: 11/22/2017] [Accepted: 12/12/2017] [Indexed: 02/06/2023]
Abstract
Trimethylamine oxide (TMAO) is an organic osmolyte and universal protein stabilizer. Its role as a cytoprotectant is particularly important in ureosmotic elasmobranchs that accumulate high levels of urea, a macromolecular perturbant. Feeding is a key component in the turnover and maintenance of these nitrogenous compounds. However, previous studies examining TMAO regulation have been largely completed using starved individuals, when nitrogen balance is altered. Here, under fed conditions, we test the importance of dietary TMAO on long-term maintenance in three elasmobranch species with differing endogenous synthetic capacities. Smoothhounds (Mustelus canis), spiny dogfish (Squalus acanthias), and little skates (Leucoraja erinacea) exhibited species- and tissue-specific differences in their ability to conserve TMAO when fed a low TMAO diet for 56days. Smoothhounds, a species with the capacity for endogenous production, exhibited a decrease in muscle TMAO. Spiny dogfish and little skates, species with no reported ability for synthesis, exhibited decreases in plasma and liver TMAO, respectively. Our findings are contrary to previous starvation studies demonstrating constant levels of TMAO for up to 56days in elasmobranchs. Further, the previously reported synthetic capacity of these species did not correlate with their ability to conserve TMAO and cannot be used to predict a species reliance on dietary contributions for prolonged maintenance. It is possible that all species rely to a degree on absorption of TMAO from the diet or that alternate synthetic or regulatory pathways play a larger role than previously thought.
Collapse
Affiliation(s)
- Abigail B Bockus
- Department of Biological Sciences, College of the Environmental and Life Sciences, University of Rhode Island, 120 Flagg Rd., Kingston, RI 02881, USA.
| | - Brad A Seibel
- Department of Biological Sciences, College of the Environmental and Life Sciences, University of Rhode Island, 120 Flagg Rd., Kingston, RI 02881, USA.
| |
Collapse
|
49
|
Gao M, Held C, Patra S, Arns L, Sadowski G, Winter R. Crowders and Cosolvents-Major Contributors to the Cellular Milieu and Efficient Means to Counteract Environmental Stresses. Chemphyschem 2017; 18:2951-2972. [DOI: 10.1002/cphc.201700762] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2017] [Revised: 08/15/2017] [Indexed: 01/27/2023]
Affiliation(s)
- Mimi Gao
- TU Dortmund University; Faculty of Chemistry and Chemical Biology; Physical Chemistry I-Biophysical Chemistry; Otto Hahn Str. 4a 44227 Dortmund Germany
| | - Christoph Held
- TU Dortmund University; Department of Biochemical and Chemical Engineering; Emil-Figge-Str. 70 44227 Dortmund Germany
| | - Satyajit Patra
- TU Dortmund University; Faculty of Chemistry and Chemical Biology; Physical Chemistry I-Biophysical Chemistry; Otto Hahn Str. 4a 44227 Dortmund Germany
| | - Loana Arns
- TU Dortmund University; Faculty of Chemistry and Chemical Biology; Physical Chemistry I-Biophysical Chemistry; Otto Hahn Str. 4a 44227 Dortmund Germany
| | - Gabriele Sadowski
- TU Dortmund University; Department of Biochemical and Chemical Engineering; Emil-Figge-Str. 70 44227 Dortmund Germany
| | - Roland Winter
- TU Dortmund University; Faculty of Chemistry and Chemical Biology; Physical Chemistry I-Biophysical Chemistry; Otto Hahn Str. 4a 44227 Dortmund Germany
| |
Collapse
|
50
|
Krüger R, Merz B, Rist MJ, Ferrario PG, Bub A, Kulling SE, Watzl B. Associations of current diet with plasma and urine TMAO in the KarMeN study: direct and indirect contributions. Mol Nutr Food Res 2017; 61. [PMID: 28755411 DOI: 10.1002/mnfr.201700363] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Revised: 07/18/2017] [Accepted: 07/19/2017] [Indexed: 11/12/2022]
Abstract
SCOPE Knowledge on the influence of current diet on trimethylamine-N-oxide (TMAO) levels in humans is still inconsistent. Thus, we aimed to investigate associations of current diet with urine and plasma TMAO levels and to determine the effect of different foods on TMAO variation. METHODS AND RESULTS TMAO concentrations of 297 healthy individuals were assessed using 1 H-NMR spectroscopy for 24 h urine collection and spot urine, and LC-MS for plasma. Of 35 assessed food groups, those with a correlation of ρ >|0.15| with plasma or urine TMAO levels were further investigated in multivariate linear regression models showing current fish and (red) meat consumption as plausible dietary sources of TMAO. Overall, explained variance of TMAO levels by current diet and co-variables (age, sex, lean body mass, glomerular filtration rate) was small. Associations with urine and plasma concentrations differed depending on the TMAO source. Fish consumption was associated with urine and plasma TMAO concentrations, whereas meat consumption was only associated with TMAO concentrations in plasma. Furthermore, associations of plasma TMAO concentration with fish consumption were two times stronger than with meat consumption. CONCLUSION Meat and fish consumption differentially affects TMAO concentrations in body fluids. Only a small fraction of variance is explained by current diet.
Collapse
Affiliation(s)
- Ralf Krüger
- Department of Physiology and Biochemistry of Nutrition, Max Rubner-Institut, Germany
| | - Benedikt Merz
- Department of Physiology and Biochemistry of Nutrition, Max Rubner-Institut, Germany
| | - Manuela J Rist
- Department of Physiology and Biochemistry of Nutrition, Max Rubner-Institut, Germany
| | - Paola G Ferrario
- Department of Physiology and Biochemistry of Nutrition, Max Rubner-Institut, Germany
| | - Achim Bub
- Department of Physiology and Biochemistry of Nutrition, Max Rubner-Institut, Germany
| | - Sabine E Kulling
- Department of Safety and Quality of Fruit and Vegetables, Max Rubner-Institut, Germany
| | - Bernhard Watzl
- Department of Physiology and Biochemistry of Nutrition, Max Rubner-Institut, Germany
| |
Collapse
|