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Covington JK, Torosian N, Cook AM, Palmer M, Bryan SG, Nou NO, Mewalal R, Harmon-Smith M, Blaby IK, Cheng JF, Hess M, Brumm PJ, Singh NK, Venkateswaran K, Hedlund BP. Biochemical characterization of Fsa16295Glu from "Fervidibacter sacchari," the first hyperthermophilic GH50 with β-1,3-endoglucanase activity and founding member of the subfamily GH50_3. Front Microbiol 2024; 15:1355444. [PMID: 38725686 PMCID: PMC11079163 DOI: 10.3389/fmicb.2024.1355444] [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: 12/13/2023] [Accepted: 04/08/2024] [Indexed: 05/12/2024] Open
Abstract
The aerobic hyperthermophile "Fervidibacter sacchari" catabolizes diverse polysaccharides and is the only cultivated member of the class "Fervidibacteria" within the phylum Armatimonadota. It encodes 117 putative glycoside hydrolases (GHs), including two from GH family 50 (GH50). In this study, we expressed, purified, and functionally characterized one of these GH50 enzymes, Fsa16295Glu. We show that Fsa16295Glu is a β-1,3-endoglucanase with optimal activity on carboxymethyl curdlan (CM-curdlan) and only weak agarase activity, despite most GH50 enzymes being described as β-agarases. The purified enzyme has a wide temperature range of 4-95°C (optimal 80°C), making it the first characterized hyperthermophilic representative of GH50. The enzyme is also active at a broad pH range of at least 5.5-11 (optimal 6.5-10). Fsa16295Glu possesses a relatively high kcat/KM of 1.82 × 107 s-1 M-1 with CM-curdlan and degrades CM-curdlan nearly completely to sugar monomers, indicating preferential hydrolysis of glucans containing β-1,3 linkages. Finally, a phylogenetic analysis of Fsa16295Glu and all other GH50 enzymes revealed that Fsa16295Glu is distant from other characterized enzymes but phylogenetically related to enzymes from thermophilic archaea that were likely acquired horizontally from "Fervidibacteria." Given its functional and phylogenetic novelty, we propose that Fsa16295Glu represents a new enzyme subfamily, GH50_3.
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Affiliation(s)
| | - Nicole Torosian
- School of Life Sciences, University of Nevada, Las Vegas, NV, United States
| | - Allison M. Cook
- School of Life Sciences, University of Nevada, Las Vegas, NV, United States
| | - Marike Palmer
- School of Life Sciences, University of Nevada, Las Vegas, NV, United States
- Department of Microbiology, University of Manitoba, Winnipeg, MB, Canada
| | - Scott G. Bryan
- School of Life Sciences, University of Nevada, Las Vegas, NV, United States
| | - Nancy O. Nou
- School of Life Sciences, University of Nevada, Las Vegas, NV, United States
| | - Ritesh Mewalal
- US Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
| | - Miranda Harmon-Smith
- US Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
| | - Ian K. Blaby
- US Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
| | - Jan-Fang Cheng
- US Department of Energy Joint Genome Institute, Lawrence Berkeley National Laboratory, Berkeley, CA, United States
| | - Matthias Hess
- Department of Animal Science, College of Agricultural and Environmental Sciences, University of California, Davis, Davis, CA, United States
| | | | - Nitin K. Singh
- Biotechnology and Planetary Protection Group, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States
| | - Kasthuri Venkateswaran
- Biotechnology and Planetary Protection Group, Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA, United States
| | - Brian P. Hedlund
- School of Life Sciences, University of Nevada, Las Vegas, NV, United States
- Nevada Institute of Personalized Medicine, University of Nevada, Las Vegas, NV, United States
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2
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Fan W, Liu Y, Xu X, Dong X, Wang H. Effects of HCO 3- and CO 2 conversion rates on carbon assimilation strategies in marine microalgae: Implication by stable carbon isotope analysis of fatty acids. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 209:108530. [PMID: 38520966 DOI: 10.1016/j.plaphy.2024.108530] [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: 01/11/2024] [Revised: 03/05/2024] [Accepted: 03/11/2024] [Indexed: 03/25/2024]
Abstract
Marine microalgae are an essential component of marine plankton and critical primary producers, playing a vital role in marine ecosystems. The seawater carbonate system is a dynamic equilibrium system, and changes in any component can alter the carbonate balance. In CO2-concentrating mechanisms (CCMs), carbonic anhydrase (CA) regulates CO2 concentration by catalyzing the interconversion between CO2 and HCO3-. Therefore, limiting the activity of extracellular carbonic anhydrase (exCA) alters the rate at which carbonate equilibrium is reached and further affects the carbon assimilation process in microalgae. In this study, two different microalgae, Phaeodactylum tricornutum and Nannochloropsis oceanica, were selected to investigate the effects of changes in the carbonate system on photosynthetic carbon assimilation in microalgae by inhibiting exCA activity with acetazolamide (AZ). Inhibition of exCA activity reduces specific growth rates and photosynthetic efficiency of microalgae. The total alkalinity, HCO3- concentration, and CO2 concentration of the cultures increased with the decrease of pH, but the changes of the ribulose 1,5- bisphosphate carboxylase/oxygenase (Rubisco) activities of the two microalgae were different. In addition, the two microalgae possessed different lipid and carbohydrate synthesis strategies, but both restricted triacylglycerol (TAG) synthesis. Meanwhile, the microalgal cells had to utilize more 13CO2 when HCO3- and CO2 conversion rates were limited and restricted. This led to the continuous accumulation of 13C in fatty acids and the elevation of δ13CFAs. In conclusion, our study provides a new perspective on the role of microalgae in correlating carbonate changes with photosynthetic carbon assimilation strategies under mechanistic constraints on inorganic carbon utilization.
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Affiliation(s)
- Weijia Fan
- College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China
| | - Yu Liu
- College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China.
| | - Xiaohan Xu
- College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China
| | - Xu Dong
- College of Environmental Science and Engineering, Dalian Maritime University, Dalian 116026, China
| | - Haixia Wang
- Navigation College, Dalian Maritime University, Dalian, 116026, China
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3
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Liu Y, Wu J, Hao H. Antitumor immunostimulatory activity of the traditional Chinese medicine polysaccharide on hepatocellular carcinoma. Front Immunol 2024; 15:1369110. [PMID: 38455058 PMCID: PMC10917928 DOI: 10.3389/fimmu.2024.1369110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2024] [Accepted: 02/09/2024] [Indexed: 03/09/2024] Open
Abstract
Hepatocellular carcinoma (HCC) is a prevalent malignancy, often associated with compromised immune function in affected patients. This can be attributed to the secretion of specific factors by liver cancer cells, which hinder the immune response and lead to a state of immune suppression. Polysaccharides derived from traditional Chinese medicine (TCM) are valuable constituents known for their immunomodulatory properties. This review aims to look into the immunomodulatory effects of TCM polysaccharides on HCC. The immunomodulatory effects of TCM polysaccharides are primarily manifested through the activation of effector T lymphocytes, dendritic cells, NK cells, and macrophages against hepatocellular carcinoma (HCC) both in vivo and in vitro settings. Furthermore, TCM polysaccharides have demonstrated remarkable adjuvant antitumor immunomodulatory effects on HCC in clinical settings. Therefore, the utilization of TCM polysaccharides holds promising potential for the development of novel therapeutic agents or adjuvants with advantageous immunomodulatory properties for HCC.
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Affiliation(s)
- Yang Liu
- College of Basic Medical Sciences, Shanxi University of Chinese Medicine, Jinzhong, China
- Basic Laboratory of Integrated Traditional Chinese and Western Medicine, Shanxi University of Chinese Medicine, Jinzhong, China
| | - Jiawen Wu
- College of Basic Medical Sciences, Shanxi University of Chinese Medicine, Jinzhong, China
- Basic Laboratory of Integrated Traditional Chinese and Western Medicine, Shanxi University of Chinese Medicine, Jinzhong, China
| | - Huiqin Hao
- College of Basic Medical Sciences, Shanxi University of Chinese Medicine, Jinzhong, China
- Basic Laboratory of Integrated Traditional Chinese and Western Medicine, Shanxi University of Chinese Medicine, Jinzhong, China
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4
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Wang FQ, Bartosik D, Sidhu C, Siebers R, Lu DC, Trautwein-Schult A, Becher D, Huettel B, Rick J, Kirstein IV, Wiltshire KH, Schweder T, Fuchs BM, Bengtsson MM, Teeling H, Amann RI. Particle-attached bacteria act as gatekeepers in the decomposition of complex phytoplankton polysaccharides. MICROBIOME 2024; 12:32. [PMID: 38374154 PMCID: PMC10877868 DOI: 10.1186/s40168-024-01757-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/07/2023] [Accepted: 01/04/2024] [Indexed: 02/21/2024]
Abstract
BACKGROUND Marine microalgae (phytoplankton) mediate almost half of the worldwide photosynthetic carbon dioxide fixation and therefore play a pivotal role in global carbon cycling, most prominently during massive phytoplankton blooms. Phytoplankton biomass consists of considerable proportions of polysaccharides, substantial parts of which are rapidly remineralized by heterotrophic bacteria. We analyzed the diversity, activity, and functional potential of such polysaccharide-degrading bacteria in different size fractions during a diverse spring phytoplankton bloom at Helgoland Roads (southern North Sea) at high temporal resolution using microscopic, physicochemical, biodiversity, metagenome, and metaproteome analyses. RESULTS Prominent active 0.2-3 µm free-living clades comprised Aurantivirga, "Formosa", Cd. Prosiliicoccus, NS4, NS5, Amylibacter, Planktomarina, SAR11 Ia, SAR92, and SAR86, whereas BD1-7, Stappiaceae, Nitrincolaceae, Methylophagaceae, Sulfitobacter, NS9, Polaribacter, Lentimonas, CL500-3, Algibacter, and Glaciecola dominated 3-10 µm and > 10 µm particles. Particle-attached bacteria were more diverse and exhibited more dynamic adaptive shifts over time in terms of taxonomic composition and repertoires of encoded polysaccharide-targeting enzymes. In total, 305 species-level metagenome-assembled genomes were obtained, including 152 particle-attached bacteria, 100 of which were novel for the sampling site with 76 representing new species. Compared to free-living bacteria, they featured on average larger metagenome-assembled genomes with higher proportions of polysaccharide utilization loci. The latter were predicted to target a broader spectrum of polysaccharide substrates, ranging from readily soluble, simple structured storage polysaccharides (e.g., laminarin, α-glucans) to less soluble, complex structural, or secreted polysaccharides (e.g., xylans, cellulose, pectins). In particular, the potential to target poorly soluble or complex polysaccharides was more widespread among abundant and active particle-attached bacteria. CONCLUSIONS Particle-attached bacteria represented only 1% of all bloom-associated bacteria, yet our data suggest that many abundant active clades played a pivotal gatekeeping role in the solubilization and subsequent degradation of numerous important classes of algal glycans. The high diversity of polysaccharide niches among the most active particle-attached clades therefore is a determining factor for the proportion of algal polysaccharides that can be rapidly remineralized during generally short-lived phytoplankton bloom events. Video Abstract.
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Grants
- AM 73/9-3 Deutsche Forschungsgemeinschaft,Germany
- SCHW 595/10-3 Deutsche Forschungsgemeinschaft,Germany
- TE 813/2-3 Deutsche Forschungsgemeinschaft,Germany
- RI 969/9-2 Deutsche Forschungsgemeinschaft,Germany
- BE 3869/4-3 Deutsche Forschungsgemeinschaft,Germany
- SCHW 595/11-3 Deutsche Forschungsgemeinschaft,Germany
- FU 627/2-3 Deutsche Forschungsgemeinschaft,Germany
- RI 969/9-2 Deutsche Forschungsgemeinschaft,Germany
- TE 813/2-3 Deutsche Forschungsgemeinschaft,Germany
- AM 73/9-3 Deutsche Forschungsgemeinschaft,Germany
- AWI_BAH_o 1 Biological Station Helgoland, Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research
- AWI_BAH_o 1 Biological Station Helgoland, Alfred Wegener Institute, Helmholtz Center for Polar and Marine Research
- Max Planck Institute for Marine Microbiology (2)
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Affiliation(s)
- Feng-Qing Wang
- Max Planck Institute for Marine Microbiology, Celsiusstraße 1, 28359, Bremen, Germany
| | - Daniel Bartosik
- Institute of Pharmacy, University of Greifswald, Felix-Hausdorff-Straße 3, 17489, Greifswald, Germany
- Institute of Marine Biotechnology, Walther-Rathenau-Straße 49a, 17489, Greifswald, Germany
| | - Chandni Sidhu
- Max Planck Institute for Marine Microbiology, Celsiusstraße 1, 28359, Bremen, Germany
| | - Robin Siebers
- Institute of Microbiology, University of Greifswald, Felix-Hausdorff-Straße 8, 17489, Greifswald, Germany
| | - De-Chen Lu
- Max Planck Institute for Marine Microbiology, Celsiusstraße 1, 28359, Bremen, Germany
- Marine College, Shandong University, Weihai, 264209, China
| | - Anke Trautwein-Schult
- Institute of Microbiology, University of Greifswald, Felix-Hausdorff-Straße 8, 17489, Greifswald, Germany
| | - Dörte Becher
- Institute of Microbiology, University of Greifswald, Felix-Hausdorff-Straße 8, 17489, Greifswald, Germany
| | - Bruno Huettel
- Max Planck Genome Centre Cologne, Carl von Linné-Weg 10, 50829, Cologne, Germany
| | - Johannes Rick
- Alfred Wegener Institute for Polar and Marine Research, Biologische Anstalt Helgoland, Helgoland, 27483, Germany
| | - Inga V Kirstein
- Alfred Wegener Institute for Polar and Marine Research, Biologische Anstalt Helgoland, Helgoland, 27483, Germany
| | - Karen H Wiltshire
- Alfred Wegener Institute for Polar and Marine Research, Biologische Anstalt Helgoland, Helgoland, 27483, Germany
| | - Thomas Schweder
- Institute of Pharmacy, University of Greifswald, Felix-Hausdorff-Straße 3, 17489, Greifswald, Germany
- Institute of Marine Biotechnology, Walther-Rathenau-Straße 49a, 17489, Greifswald, Germany
| | - Bernhard M Fuchs
- Max Planck Institute for Marine Microbiology, Celsiusstraße 1, 28359, Bremen, Germany
| | - Mia M Bengtsson
- Institute of Microbiology, University of Greifswald, Felix-Hausdorff-Straße 8, 17489, Greifswald, Germany.
| | - Hanno Teeling
- Max Planck Institute for Marine Microbiology, Celsiusstraße 1, 28359, Bremen, Germany.
| | - Rudolf I Amann
- Max Planck Institute for Marine Microbiology, Celsiusstraße 1, 28359, Bremen, Germany.
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5
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Pramanik S, Singh A, Abualsoud BM, Deepak A, Nainwal P, Sargsyan AS, Bellucci S. From algae to advancements: laminarin in biomedicine. RSC Adv 2024; 14:3209-3231. [PMID: 38249671 PMCID: PMC10797329 DOI: 10.1039/d3ra08161c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 12/22/2023] [Indexed: 01/23/2024] Open
Abstract
Laminarin, a complicated polysaccharide originating from brown algae, has emerged as a compelling candidate in the domain of biomedical research. This enigmatic molecule, composed of glucose units associated with both β-1,3 and β-1,6 glycosidic bonds, possesses an array of remarkable characteristics that render it auspicious for multifaceted biomedical applications. This review investigates the comprehensive potential of laminarin in the biomedical domain, emphasizing its remarkable biocompatibility, low cytotoxicity, and cell proliferation support. Laminarin's immunomodulatory attributes position it as an encouraging contender in immunotherapy and the development of vaccines. Moreover, its anti-inflammatory and antioxidant characteristics provide a promising avenue for combatting conditions associated with oxidative stress. In particular, laminarin excels as a drug delivery vehicle owing to its exceptional encapsulation capabilities emerging from its porous framework. Integrating pH and redox responsiveness in laminarin-based drug delivery systems is poised to redefine targeted therapies. Laminarin substantially contributes to tissue engineering by improving adhesion, migration of cells, and deposition of extracellular matrix. This augmentation magnifies the regenerative capability of tissue-engineered constructs, substantiated by the advancement of laminarin-based wound dressings and tissue scaffolds, marking considerable progress in the domain of wound healing and tissue regeneration. While laminarin exhibits substantial potential in biomedical applications, it remains in the initial phases of exploration. Comprehensive preclinical and clinical research is warranted to verify its effectiveness and safety across various applications. In essence, laminarin, a marine marvel, has the capability to remodel biomedical research, offering inventive solutions to complex difficulties.
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Affiliation(s)
- Sheersha Pramanik
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras Chennai 600036 Tamil Nadu India
| | - Anshul Singh
- Department of Chemistry, Baba Mastnath University Rohtak 124021 India
| | - Bassam M Abualsoud
- Department of Pharmaceutics and Pharmaceutical Technology, College of Pharmacy, Al-Ahliyya Amman University Amman 19328 Jordan
| | - A Deepak
- Saveetha Institute of Medical and Technical Sciences, Saveetha School of Engineering Chennai Tamil Nadu 600128 India
| | - Pankaj Nainwal
- School of Pharmacy, Graphic Era Hill University Dehradun 248001 India
| | - Armen S Sargsyan
- Scientific and Production Center "Armbiotechnology" NAS RA 14 Gyurjyan Str. Yerevan 0056 Armenia
| | - Stefano Bellucci
- INFN-Laboratori Nazionali di Frascati Via E. Fermi 54 00044 Frascati Italy
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6
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Liu X, Chen J, Du H, Liu Z, Du H, Rashid A, Wang Y, Ma W, Wang S. Resolving the dynamics of chrysolaminarin regulation in a marine diatom: A physiological and transcriptomic study. Int J Biol Macromol 2023; 252:126361. [PMID: 37591430 DOI: 10.1016/j.ijbiomac.2023.126361] [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: 02/21/2023] [Revised: 08/01/2023] [Accepted: 08/14/2023] [Indexed: 08/19/2023]
Abstract
Diatom containing different active biological macromolecules are thought to be an excellent microbial cell factory. Phaeodactylum tricornutum, a model diatom, is a superb chassis organism accumulating chrysolaminarin with important bioactivities. However, the characteristic of chrysolaminarin accumulation and molecular mechanism of the fluctuated chrysolaminarin in diatom are still unknown. In this study, physiological data and transcriptomic analysis were carried out to clarify the mechanism involved in chrysolaminarin fluctuation. The results showed that chrysolaminarin content fluctuated, from 7.41 % dry weight (DW) to 40.01 % DW during one light/dark cycle, increase by day and decrease by night. The similar fluctuated characteristic was also observed in neutral lipid content. Genes related to the biosynthesis of chrysolaminarin and neutral lipid were up-regulated at the beginning of light-phase, explaining the accumulation of these biological macromolecules. Furthermore, genes involved in carbohydrate degradation, cell cycle, DNA replication and mitochondria-localized β-oxidation were up-regulated at the end of light phase and at the beginning of dark phase hinting an energy transition of carbohydrate to cell division during the dark period. Totally, our findings provide important information for the regulatory mechanism in the diurnal fluctuation of chrysolaminarin. It would also be of great help for the mass production of economical chrysolaminarin in marine diatom.
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Affiliation(s)
- Xiaojuan Liu
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, STU-UNIVPM Joint Algal Research Center, College of Sciences, Shantou University, Shantou 515063, Guangdong, China
| | - Jichen Chen
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, STU-UNIVPM Joint Algal Research Center, College of Sciences, Shantou University, Shantou 515063, Guangdong, China
| | - Hong Du
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, STU-UNIVPM Joint Algal Research Center, College of Sciences, Shantou University, Shantou 515063, Guangdong, China.
| | - Zidong Liu
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, STU-UNIVPM Joint Algal Research Center, College of Sciences, Shantou University, Shantou 515063, Guangdong, China
| | - Hua Du
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, STU-UNIVPM Joint Algal Research Center, College of Sciences, Shantou University, Shantou 515063, Guangdong, China
| | - Azhar Rashid
- Department of Environmental Sciences, The University of Haripur, Haripur 22620, Pakistan
| | - Yuwen Wang
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, STU-UNIVPM Joint Algal Research Center, College of Sciences, Shantou University, Shantou 515063, Guangdong, China
| | - Wanying Ma
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, STU-UNIVPM Joint Algal Research Center, College of Sciences, Shantou University, Shantou 515063, Guangdong, China
| | - Shuqi Wang
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, STU-UNIVPM Joint Algal Research Center, College of Sciences, Shantou University, Shantou 515063, Guangdong, China
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7
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Inukai M, Kobayashi N, Endo H, Asakawa K, Amano K, Yasuda Y, Cenci U, Colleoni C, Ball S, Fujiwara S. Kre6 (yeast 1,6-β-transglycosylase) homolog, PhTGS, is essential for β-glucan synthesis in the haptophyte Pleurochrysis haptonemofera. Front Bioeng Biotechnol 2023; 11:1259587. [PMID: 37790259 PMCID: PMC10543733 DOI: 10.3389/fbioe.2023.1259587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Accepted: 08/29/2023] [Indexed: 10/05/2023] Open
Abstract
Haptophytes synthesize unique β-glucans containing more β-1,6-linkages than β-1,3 linkages, as a storage polysaccharide. To understand the mechanism of the synthesis, we investigated the roles of Kre6 (yeast 1,6-β-transglycosylase) homologs, PhTGS, in the haptophyte Pleurochrysis haptonemofera. RNAi of PhTGS repressed β-glucan accumulation and simultaneously induced lipid production, suggesting that PhTGS is involved in β-glucan synthesis and that the knockdown leads to the alteration of the carbon metabolic flow. PhTGS was expressed more in light, where β-glucan was actively produced by photosynthesis, than in the dark. The crude extract of E. coli expressing PhKre6 demonstrated its activity to incorporate 14C-UDP-glucose into β-glucan of P. haptonemofera. These findings suggest that PhTGS functions in storage β-glucan synthesis specifically in light, probably by producing the β-1,6-branch.
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Affiliation(s)
- Mayuka Inukai
- School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, Japan
| | - Naoya Kobayashi
- School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, Japan
| | - Hirotoshi Endo
- National Institute of Technology, Tsuruoka College, Tsuruoka, Japan
| | - Koki Asakawa
- School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, Japan
| | - Keisuke Amano
- School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, Japan
| | - Yuki Yasuda
- School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, Japan
| | - Ugo Cenci
- University of Lille, French National Centre for Scientific Research, UMR8576-UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France
| | - Christophe Colleoni
- University of Lille, French National Centre for Scientific Research, UMR8576-UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France
| | - Steven Ball
- University of Lille, French National Centre for Scientific Research, UMR8576-UGSF-Unité de Glycobiologie Structurale et Fonctionnelle, Lille, France
| | - Shoko Fujiwara
- School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, Hachioji, Japan
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8
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Sanniyasi E, Gopal RK, Damodharan R, Arumugam A, Sampath Kumar M, Senthilkumar N, Anbalagan M. In vitro anticancer potential of laminarin and fucoidan from Brown seaweeds. Sci Rep 2023; 13:14452. [PMID: 37660108 PMCID: PMC10475116 DOI: 10.1038/s41598-023-41327-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 08/24/2023] [Indexed: 09/04/2023] Open
Abstract
Marine seaweeds are rich source of polysaccharides present in their cell wall and are cultivated and consumed in China, Japan, Korea, and South Asian countries. Brown seaweeds (Phaeophyta) are rich source of polysaccharides such as Laminarin and Fucoidan. In present study, both the laminarin and fucoidan were isolated was yielded higher in PP (Padina pavonica) (4.36%) and STM (Stoechospermum marginatum) (2.32%), respectively. The carbohydrate content in laminarin and fucoidan was 86.91% and 87.36%, whereas the sulphate content in fucoidan was 20.68%. Glucose and mannose were the major monosaccharide units in laminarin (PP), however, fucose, galactose, and xylose in fucoidan (STM). FT-IR down peaks represent the carbohydrate of laminarin and fucoidan except, for 1219 cm-1, and 843 cm-1, illustrating the sulphate groups of fucoidan. The molecular weight of laminarin was 3-5 kDa, and the same for fucoidan was 2-6 kDa, respectively. Both the Fucoidan and Laminarin showed null cytotoxicity on Vero cells. Contrastingly, the fucoidan possess cytotoxic activity on human liver cancer cells (HepG2) (IC50-24.4 ± 1.5 µg/mL). Simultaneously, laminarin also shown cytotoxicity on human colon cancer cells (HT-29) (IC50-57 ± 1.2 µg/mL). The AO/EB (Acriding Orange/Ethidium Bromide) assay significantly resulted in apoptosis and necrosis upon laminarin and fucoidan treatments, respectively. The DNA fragmentation results support necrotic cancer cell death. Therefore, laminarin and fucoidan from PP and STM were potential bioactive compounds for anticancer therapy.
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Affiliation(s)
- Elumalai Sanniyasi
- Department of Biotechnology, University of Madras, Guindy Campus, Chennai, 600025, India.
| | - Rajesh Kanna Gopal
- Department of Microbiology, Saveetha Dental College and Hospitals, SIMATS, Chennai, 600077, India
| | - Rajesh Damodharan
- Department of Biotechnology, University of Madras, Guindy Campus, Chennai, 600025, India
| | - Arthi Arumugam
- Department of Biotechnology, Rajalakshmi Engineering College, Chennai, 602105, India
| | | | | | - Monisha Anbalagan
- Department of Biotechnology, Jeppiar Engineering College, Chennai, 600119, India
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9
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Priya A, Naseem S, Pandey D, Bhowmick A, Attrah M, Dutta K, Rene ER, Suman SK, Daverey A. Innovative strategies in algal biomass pretreatment for biohydrogen production. BIORESOURCE TECHNOLOGY 2023; 369:128446. [PMID: 36473587 DOI: 10.1016/j.biortech.2022.128446] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 11/29/2022] [Accepted: 12/02/2022] [Indexed: 06/17/2023]
Abstract
Biohydrogen is one of the cleanest renewable energies with a high calorific value. Algal biomass can be utilized as a sustainable feedstock for biohydrogen production via dark fermentation. However, the recovery of fermentable sugar from algal biomass is challenging because of the diversity and complex cell wall composition and therefore, requires an additional pretreatment step. However, most of the conventional pretreatment strategies suffer from limited technological feasibility and poor economic viability. In this context, this review aims to present the structural complexities of the cell wall of algae and highlight the innovative approaches such as the use of hybrid technologies, biosurfactants, nanoparticles, and genetic engineering approaches for the hydrolysis of algal biomass and improved biohydrogen production. Additionally, a comprehensive discussion of the comparative evaluation of various pretreatment methods, and the techno-economic and life cycle assessment of algal biohydrogen production is also presented in this review.
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Affiliation(s)
- Anshu Priya
- School of Energy and Environment, City University of Hong Kong, Tat Chee Ave, Kowloon, Hong Kong
| | - Shifa Naseem
- Material Resource Efficiency Division, CSIR-Indian Institute of Petroleum, Haridwar Road, Dehradun 248005, Uttarakhand, India
| | - Deepshikha Pandey
- School of Environment and Natural Resources, Doon University, Dehradun 248012, Uttarakhand, India
| | - Anisha Bhowmick
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela 769008, Odisha, India
| | - Mustafa Attrah
- Department of Water Supply, Sanitation and Environmental Engineering, IHE Delft Institute for Water Education, Westvest 7, 2601DA Delft, the Netherlands
| | - Kasturi Dutta
- Department of Biotechnology and Medical Engineering, National Institute of Technology Rourkela, Rourkela 769008, Odisha, India
| | - Eldon R Rene
- Department of Water Supply, Sanitation and Environmental Engineering, IHE Delft Institute for Water Education, Westvest 7, 2601DA Delft, the Netherlands
| | - Sunil Kumar Suman
- Material Resource Efficiency Division, CSIR-Indian Institute of Petroleum, Haridwar Road, Dehradun 248005, Uttarakhand, India
| | - Achlesh Daverey
- School of Environment and Natural Resources, Doon University, Dehradun 248012, Uttarakhand, India; School of Biological Sciences, Doon University, Dehradun, 248012, Uttarakhand, India.
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10
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Woo S, Moon JH, Sung J, Baek D, Shon YJ, Jung GY. Recent Advances in the Utilization of Brown Macroalgae as Feedstock for Microbial Biorefinery. BIOTECHNOL BIOPROC E 2022. [DOI: 10.1007/s12257-022-0301-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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11
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Guo T, Zhu L, Zhou Y, Han S, Cao Y, Hu Z, Luo Y, Bao L, Wu X, Qin D, Lin Q, Luo F. Laminarin ameliorates alcohol-induced liver damage and its molecular mechanism in mice. J Food Biochem 2022; 46:e14500. [PMID: 36515171 DOI: 10.1111/jfbc.14500] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Revised: 09/30/2022] [Accepted: 10/24/2022] [Indexed: 12/15/2022]
Abstract
Alcoholic liver disease (ALD) has become a health issue globally. Laminarin, a low molecular weight marine-derived β-glucan, has been identified with multiple biological activities. In this study, the ameliorative effect on ALD of laminarin isolated from brown algae was investigated. Phenotypic, pathological alterations and biochemical characteristics indicated that laminarin administration (100 mg/kg/day) significantly alleviated liver injury and improved liver function in the alcohol-induced mice. Gene chip results indicated that laminarin treatment caused 52 up-regulated and 13 down-regulated genes in the hepatic tissues of alcohol-induced damage mice, and most of these genes are associated with regulation of oxidative stress (such as CYP450/glutathione-dependent antioxidation), Wnt signaling pathway, retinol metabolism, and cAMP pathway based on GO and KEGG analysis. PPI network analysis indicated that the downstream target genes lied in the hub of the net. Our experiments also confirmed the changed expressions of some target genes. Taken together, these results suggest that laminarin can ameliorate alcohol-induced damage in mice and its molecular mechanism lies in modulating anti-oxidation pathway, WNT pathway, and cAMP pathway, which regulate the expressions of downstream target genes and alleviate alcohol-induced damage. Our study provides new clue to prevent alcohol-induced damage and will be benefit to develop functional foods. PRACTICAL APPLICATIONS: This study verified the positive effect on alcoholic liver disease (ALD) of laminarin, a water-soluble brown algae-derived β-glucan, linked by β-(1,3) glycosidic bonds with β-(1,6) branches. Laminarin significantly alleviated liver injury and improved liver function of ALD mice. Moreover, transcriptomics and bioinformatics analysis further revealed the gene expression patterns, hub targets, and signalings including CYP450/glutathione, Wnt, retinol metabolism, cAMP pathways regulated by laminarin. This research is the first evidence for hepatoprotective effect of laminarin against ALD and its molecular mechanism, which will be advantage to develop functional foods or adjuvant therapy of ALD.
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Affiliation(s)
- Tianyi Guo
- Hunan Key Laboratory of Grain-oil Deep Process and Quality Control, Hunan Key Laboratory of Forestry Edible Resources Safety and Processing, Central South University of Forestry and Technology, Changsha, China
| | - Lingfeng Zhu
- Hunan Key Laboratory of Grain-oil Deep Process and Quality Control, Hunan Key Laboratory of Forestry Edible Resources Safety and Processing, Central South University of Forestry and Technology, Changsha, China.,Hunan Agricultural Product Processing Institute, Hunan Academy of Agricultural Sciences, Changsha, China
| | - Yaping Zhou
- Hunan Key Laboratory of Grain-oil Deep Process and Quality Control, Hunan Key Laboratory of Forestry Edible Resources Safety and Processing, Central South University of Forestry and Technology, Changsha, China
| | - Shuai Han
- Hunan Key Laboratory of Grain-oil Deep Process and Quality Control, Hunan Key Laboratory of Forestry Edible Resources Safety and Processing, Central South University of Forestry and Technology, Changsha, China
| | - Yunyun Cao
- Hunan Key Laboratory of Grain-oil Deep Process and Quality Control, Hunan Key Laboratory of Forestry Edible Resources Safety and Processing, Central South University of Forestry and Technology, Changsha, China
| | - Zuomin Hu
- Hunan Key Laboratory of Grain-oil Deep Process and Quality Control, Hunan Key Laboratory of Forestry Edible Resources Safety and Processing, Central South University of Forestry and Technology, Changsha, China
| | - Yi Luo
- Department of Clinic Medicine, Xiangya School of Medicine, Central South University, Changsha, China
| | - Liyuan Bao
- Department of logistics, Changsha University, Changsha, China
| | - Xiuxiu Wu
- Hunan Key Laboratory of Grain-oil Deep Process and Quality Control, Hunan Key Laboratory of Forestry Edible Resources Safety and Processing, Central South University of Forestry and Technology, Changsha, China
| | - Dandan Qin
- Hunan Key Laboratory of Grain-oil Deep Process and Quality Control, Hunan Key Laboratory of Forestry Edible Resources Safety and Processing, Central South University of Forestry and Technology, Changsha, China
| | - Qinlu Lin
- Hunan Key Laboratory of Grain-oil Deep Process and Quality Control, Hunan Key Laboratory of Forestry Edible Resources Safety and Processing, Central South University of Forestry and Technology, Changsha, China
| | - Feijun Luo
- Hunan Key Laboratory of Grain-oil Deep Process and Quality Control, Hunan Key Laboratory of Forestry Edible Resources Safety and Processing, Central South University of Forestry and Technology, Changsha, China
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12
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Chen Y, Liang H, Du H, Jesumani V, He W, Cheong KL, Li T, Hong T. Industry chain and challenges of microalgal food industry-a review. Crit Rev Food Sci Nutr 2022; 64:4789-4816. [PMID: 36377724 DOI: 10.1080/10408398.2022.2145455] [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] [Indexed: 11/16/2022]
Abstract
Currently, the whole world is facing hunger due to the increase in the global population and the rising level of food consumption. Unfortunately, the impact of environmental, climate, and political issues on agriculture has resulted in limited global food resources. Thus, it is important to develop new food sources that are environmentally friendly and not subject to climate or space limitations. Microalgae represent a potential source of nutrients and bioactive components for a wide range of high-value products. Advances in cultivation and genetic engineering techniques provide prospective approaches to widen their application for food. However, there are currently problems in the microalgae food industry in terms of assessing nutritional value, selecting processes for microalgae culture, obtaining suitable commercial strains of microalgae, etc. Additionally, the limitations of real data of market opportunities for microalgae make it difficult to assess their actual potential and to develop a better industrial chain. This review addresses the current status of the microalgae food industry, the process of commercializing microalgae food and breeding methods. Current research progress in addressing the limitations of microalgae industrialization and future prospects for developing microalgae food products are discussed.
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Affiliation(s)
- Yuanhao Chen
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Department of Biology, College of Science, Shantou University, Shantou, Guangdong, China
- STU-UNIVPM Joint Algal Research Center, Institute of Marine Sciences, Shantou University, Shantou, Guangdong, China
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, Shantou University, Shantou, Guangdong, China
| | - Honghao Liang
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Department of Biology, College of Science, Shantou University, Shantou, Guangdong, China
- STU-UNIVPM Joint Algal Research Center, Institute of Marine Sciences, Shantou University, Shantou, Guangdong, China
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, Shantou University, Shantou, Guangdong, China
| | - Hong Du
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Department of Biology, College of Science, Shantou University, Shantou, Guangdong, China
- STU-UNIVPM Joint Algal Research Center, Institute of Marine Sciences, Shantou University, Shantou, Guangdong, China
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, Shantou University, Shantou, Guangdong, China
| | - Valentina Jesumani
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Department of Biology, College of Science, Shantou University, Shantou, Guangdong, China
| | - Weiling He
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Department of Biology, College of Science, Shantou University, Shantou, Guangdong, China
- STU-UNIVPM Joint Algal Research Center, Institute of Marine Sciences, Shantou University, Shantou, Guangdong, China
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, Shantou University, Shantou, Guangdong, China
| | - Kit-Leong Cheong
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Department of Biology, College of Science, Shantou University, Shantou, Guangdong, China
| | - Tangcheng Li
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Department of Biology, College of Science, Shantou University, Shantou, Guangdong, China
- STU-UNIVPM Joint Algal Research Center, Institute of Marine Sciences, Shantou University, Shantou, Guangdong, China
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, Shantou University, Shantou, Guangdong, China
| | - Ting Hong
- Guangdong Provincial Key Laboratory of Marine Biotechnology, Department of Biology, College of Science, Shantou University, Shantou, Guangdong, China
- STU-UNIVPM Joint Algal Research Center, Institute of Marine Sciences, Shantou University, Shantou, Guangdong, China
- Guangdong Provincial Key Laboratory of Marine Disaster Prediction and Prevention, Shantou University, Shantou, Guangdong, China
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Liu J, Chen Y, Nie L, Liang X, Huang W, Li R. In silico analysis and preclinical findings uncover potential targets of anti-cervical carcinoma and COVID-19 in laminarin, a promising nutraceutical. Front Pharmacol 2022; 13:955482. [PMID: 36016559 PMCID: PMC9395986 DOI: 10.3389/fphar.2022.955482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Accepted: 07/04/2022] [Indexed: 12/03/2022] Open
Abstract
Until today, the coronavirus disease 2019 (COVID-19) pandemic has caused 6,043,094 deaths worldwide, and most of the mortality cases have been related to patients with long-term diseases, especially cancer. Autophagy is a cellular process for material degradation. Recently, studies demonstrated the association of autophagy with cancer development and immune disorder, suggesting autophagy as a possible target for cancer and immune therapy. Laminarin is a polysaccharide commonly found in brown algae and has been reported to have pharmaceutic roles in treating human diseases, including cancers. In the present report, we applied network pharmacology with systematic bioinformatic analysis, including gene ontology (GO) enrichment, Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analysis, reactome pathway analysis, and molecular docking to determine the pharmaceutic targets of laminarin against COVID-19 and cervical cancer via the autophagic process. Our results showed that the laminarin would target ten genes: CASP8, CFTR, DNMT1, HPSE, KCNH2, PIK3CA, PIK3R1, SERPINE1, TLR4, and VEGFA. The enrichment analysis suggested their involvement in cell death, immune responses, apoptosis, and viral infection. In addition, molecular docking further demonstrated the direct binding of laminarin to its target proteins, VEGFA, TLR4, CASP8, and PIK3R1. The present findings provide evidence that laminarin could be used as a combined therapy for treating patients with COVID-19 and cervical cancer.
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Affiliation(s)
- Jiaqi Liu
- Key Laboratory of Environmental Pollution and Integrative Omics, Guilin Medical University, Education Department of Guangxi Zhuang Autonomous Region, Guilin, China
| | - Yudong Chen
- Department of Gynecology, Guigang City People’s Hospital, The Eighth Affiliated Hospital of Guangxi Medical University, Guigang, China
| | - Litao Nie
- Key Laboratory of Environmental Pollution and Integrative Omics, Guilin Medical University, Education Department of Guangxi Zhuang Autonomous Region, Guilin, China
| | - Xiao Liang
- Key Laboratory of Environmental Pollution and Integrative Omics, Guilin Medical University, Education Department of Guangxi Zhuang Autonomous Region, Guilin, China
| | - Wenjun Huang
- Key Laboratory of Environmental Pollution and Integrative Omics, Guilin Medical University, Education Department of Guangxi Zhuang Autonomous Region, Guilin, China
- *Correspondence: Wenjun Huang, ; Rong Li,
| | - Rong Li
- Key Laboratory of Environmental Pollution and Integrative Omics, Guilin Medical University, Education Department of Guangxi Zhuang Autonomous Region, Guilin, China
- Key Laboratory of Tumor Immunology and Microenvironmental Regulation, Guilin Medical University, Guilin, China
- *Correspondence: Wenjun Huang, ; Rong Li,
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Luis AS, Baslé A, Byrne DP, Wright GSA, London JA, Jin C, Karlsson NG, Hansson GC, Eyers PA, Czjzek M, Barbeyron T, Yates EA, Martens EC, Cartmell A. Sulfated glycan recognition by carbohydrate sulfatases of the human gut microbiota. Nat Chem Biol 2022; 18:841-849. [PMID: 35710619 PMCID: PMC7613211 DOI: 10.1038/s41589-022-01039-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Accepted: 04/14/2022] [Indexed: 12/31/2022]
Abstract
Sulfated glycans are ubiquitous nutrient sources for microbial communities that have coevolved with eukaryotic hosts. Bacteria metabolize sulfated glycans by deploying carbohydrate sulfatases that remove sulfate esters. Despite the biological importance of sulfatases, the mechanisms underlying their ability to recognize their glycan substrate remain poorly understood. Here, we use structural biology to determine how sulfatases from the human gut microbiota recognize sulfated glycans. We reveal seven new carbohydrate sulfatase structures spanning four S1 sulfatase subfamilies. Structures of S1_16 and S1_46 represent novel structures of these subfamilies. Structures of S1_11 and S1_15 demonstrate how non-conserved regions of the protein drive specificity toward related but distinct glycan targets. Collectively, these data reveal that carbohydrate sulfatases are highly selective for the glycan component of their substrate. These data provide new approaches for probing sulfated glycan metabolism while revealing the roles carbohydrate sulfatases play in host glycan catabolism.
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Affiliation(s)
- Ana S Luis
- Department of Microbiology and Immunology, University of Michigan, Ann Arbor, MI, USA.
- Department of Medical Biochemistry and Cell Biology, University of Gothenburg, Gothenburg, Sweden.
| | - Arnaud Baslé
- Institute for Cell and Molecular Biosciences, Newcastle University, Newcastle upon Tyne, UK
| | - Dominic P Byrne
- Department of Biochemistry and Systems Biology, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK
| | - Gareth S A Wright
- Department of Biochemistry and Systems Biology, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK
| | - James A London
- Department of Biochemistry and Systems Biology, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK
| | - Chunsheng Jin
- Department of Medical Biochemistry and Cell Biology, University of Gothenburg, Gothenburg, Sweden
| | - Niclas G Karlsson
- Department of Medical Biochemistry and Cell Biology, University of Gothenburg, Gothenburg, Sweden
- Faculty of Health Sciences, Department of Life Sciences and Health, Pharmacy, Oslo Metropolitan University, Oslo, Norway
| | - Gunnar C Hansson
- Department of Medical Biochemistry and Cell Biology, University of Gothenburg, Gothenburg, Sweden
| | - Patrick A Eyers
- Department of Biochemistry and Systems Biology, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK
| | - Mirjam Czjzek
- Sorbonne Université, Univ Paris 06, CNRS, UMR 8227, Integrative Biology of Marine Models, Station Biologique de Roscoff, CS, Roscoff, France
| | - Tristan Barbeyron
- Sorbonne Université, Univ Paris 06, CNRS, UMR 8227, Integrative Biology of Marine Models, Station Biologique de Roscoff, CS, Roscoff, France
| | - Edwin A Yates
- Department of Biochemistry and Systems Biology, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK
| | - Eric C Martens
- Department of Microbiology and Immunology, University of Michigan, Ann Arbor, MI, USA
| | - Alan Cartmell
- Department of Biochemistry and Systems Biology, Institute of Systems, Molecular and Integrative Biology, University of Liverpool, Liverpool, UK.
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Arora N, Lo E, Philippidis GP. Dissecting Enhanced Carbohydrate and Pigment Productivity in Mutants of Nannochloropsis oculata Using Metabolomics and Lipidomics. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:8338-8350. [PMID: 35767746 DOI: 10.1021/acs.jafc.2c02755] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Random mutagenesis is an effective strategy for enhancing cellular traits. In this study, we used the mutagen ethyl methanesulfonate to create fast-growing Nannochloropsis oculata mutants. When cultivated in a photobioreactor with a diel cycle, two mutants exhibited 2.2-fold higher carbohydrate productivity and 3.5-4.0-fold higher pigment productivity than the wild type, while one of them also showed 2.5-fold higher lipid productivity. A comprehensive physiological, metabolomic, and lipidomic study showed that the mutants had high levels of glucose-, galactose-, and xylose-based carbohydrates. Their high growth rate was attributed to increased chlorophyll a content, improved nitrogen assimilation, storage, and recycling, and low monogalactosyldiacyl glycerol/digalactosyldiacyl glycerol ratio, which was responsible for higher biomass productivity. The investigation revealed upregulation of lipid precursors, shedding light on high lipid accumulation. The derived algae strains are capable of increasing the biosynthesis of value-added storage molecules without impairing growth, rendering them promising candidates for commercial development in future biorefineries.
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Affiliation(s)
- Neha Arora
- Department of Cell Biology, Microbiology and Molecular Biology, University of South Florida, Tampa, Florida 33620, United States
| | - Enlin Lo
- Department of Chemical, Biological and Materials Engineering, University of South Florida, Tampa, Florida 33620, United States
| | - George P Philippidis
- Patel College of Global Sustainability, University of South Florida, Tampa, Florida 33620, United States
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Asimakis E, Shehata AA, Eisenreich W, Acheuk F, Lasram S, Basiouni S, Emekci M, Ntougias S, Taner G, May-Simera H, Yilmaz M, Tsiamis G. Algae and Their Metabolites as Potential Bio-Pesticides. Microorganisms 2022; 10:microorganisms10020307. [PMID: 35208762 PMCID: PMC8877611 DOI: 10.3390/microorganisms10020307] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/23/2022] [Accepted: 01/25/2022] [Indexed: 01/27/2023] Open
Abstract
An increasing human population necessitates more food production, yet current techniques in agriculture, such as chemical pesticide use, have negative impacts on the ecosystems and strong public opposition. Alternatives to synthetic pesticides should be safe for humans, the environment, and be sustainable. Extremely diverse ecological niches and millions of years of competition have shaped the genomes of algae to produce a myriad of substances that may serve humans in various biotechnological areas. Among the thousands of described algal species, only a small number have been investigated for valuable metabolites, yet these revealed the potential of algal metabolites as bio-pesticides. This review focuses on macroalgae and microalgae (including cyanobacteria) and their extracts or purified compounds, that have proven to be effective antibacterial, antiviral, antifungal, nematocides, insecticides, herbicides, and plant growth stimulants. Moreover, the mechanisms of action of the majority of these metabolites against plant pests are thoroughly discussed. The available information demonstrated herbicidal activities via inhibition of photosynthesis, antimicrobial activities via induction of plant defense responses, inhibition of quorum sensing and blocking virus entry, and insecticidal activities via neurotoxicity. The discovery of antimetabolites also seems to hold great potential as one recent example showed antimicrobial and herbicidal properties. Algae, especially microalgae, represent a vast untapped resource for discovering novel and safe biopesticide compounds.
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Affiliation(s)
- Elias Asimakis
- Laboratory of Systems Microbiology and Applied Genomics, Department of Environmental Engineering, University of Patras, 2 Seferi St., 30131 Agrinio, Greece;
| | - Awad A. Shehata
- Research and Development Section, PerNaturam GmbH, 56290 Gödenroth, Germany;
| | - Wolfgang Eisenreich
- Bavarian NMR Center—Structural Membrane Biochemistry, Department of Chemistry, Technische Universität München, 85748 Garching, Germany;
| | - Fatma Acheuk
- Laboratory for Valorization and Conservation of Biological Resources, Faculty of Sciences, University M’Hamed Bougara of Boumerdes, Boumerdes 35000, Algeria;
| | - Salma Lasram
- Laboratory of Molecular Physiology of Plants, Borj-Cedria Biotechnology Center. BP. 901, Hammam-Lif 2050, Tunisia;
| | - Shereen Basiouni
- Institute of Molecular Physiology, Johannes Gutenberg-University of Mainz, 55128 Mainz, Germany; (S.B.); (H.M.-S.)
| | - Mevlüt Emekci
- Department of Plant Protection, Faculty of Agriculture, Ankara University, Keçiören, Ankara 06135, Turkey;
| | - Spyridon Ntougias
- Department of Environmental Engineering, Democritus University of Thrace, Vas. Sofias 12, 67132 Xanthi, Greece;
| | - Gökçe Taner
- Department of Bioengineering, Bursa Technical University, Bursa 16310, Turkey;
| | - Helen May-Simera
- Institute of Molecular Physiology, Johannes Gutenberg-University of Mainz, 55128 Mainz, Germany; (S.B.); (H.M.-S.)
| | - Mete Yilmaz
- Department of Bioengineering, Bursa Technical University, Bursa 16310, Turkey;
- Correspondence: (M.Y.); (G.T.)
| | - George Tsiamis
- Laboratory of Systems Microbiology and Applied Genomics, Department of Environmental Engineering, University of Patras, 2 Seferi St., 30131 Agrinio, Greece;
- Correspondence: (M.Y.); (G.T.)
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