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Wei M, Huang Y, Zhu J, Qiao Y, Xiao N, Jin M, Gao H, Huang Y, Hu X, Li O. Advances in hyaluronic acid production: Biosynthesis and genetic engineering strategies based on Streptococcus - A review. Int J Biol Macromol 2024; 270:132334. [PMID: 38744368 DOI: 10.1016/j.ijbiomac.2024.132334] [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: 11/28/2023] [Revised: 05/02/2024] [Accepted: 05/11/2024] [Indexed: 05/16/2024]
Abstract
Hyaluronic acid (HA), which is a highly versatile glycosaminoglycan, is widely applied across the fields of food, cosmetics, and pharmaceuticals. It is primary produced through Streptococcus fermentation, but the product presents inherent challenges concerning consistency and potential pathogenicity. However, recent strides in molecular biology have paved the way for genetic engineering, which facilitates the creation of high-yield, nonpathogenic strains adept at synthesizing HA with specific molecular weights. This comprehensive review extensively explores the molecular biology underpinning pivotal HA synthase genes, which elucidates the intricate mechanisms governing HA synthesis. Moreover, it delineates various strategies employed in engineering HA-producing strains.
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Affiliation(s)
- Mengmeng Wei
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310000, PR China
| | - Ying Huang
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310000, PR China
| | - Junyuan Zhu
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310000, PR China
| | - Yufan Qiao
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310000, PR China
| | - Na Xiao
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310000, PR China
| | - Mengying Jin
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310000, PR China
| | - Han Gao
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310000, PR China
| | - Yitie Huang
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310000, PR China
| | - Xiufang Hu
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310000, PR China
| | - Ou Li
- College of Life Sciences and Medicine, Zhejiang Sci-Tech University, Hangzhou 310000, PR China.
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2
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Ebrahimi T, Keramati M, Khodabakhsh F, Cohan RA. Enzyme variants in biosynthesis and biological assessment of different molecular weight hyaluronan. AMB Express 2024; 14:56. [PMID: 38730188 PMCID: PMC11087452 DOI: 10.1186/s13568-024-01713-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 04/28/2024] [Indexed: 05/12/2024] Open
Abstract
In the present study, low- and high-molecular-weight hyaluronic acids (LMW-HA and HMW-HA) were synthesized in vitro by truncated Streptococcus equisimilis hyaluronan synthases (SeHAS). The enzyme kinetic parameters were determined for each enzyme variant. The MW, structure, dispersity, and biological activity of polymers were determined by electrophoresis, FTIR spectroscopy, carbazole, cell proliferation, and cell migration assay, respectively. The specific activities were calculated as 7.5, 6.8, 4.9, and 2.8 µgHA µgenzyme-1 min-1 for SeHAS, HAS123, HAS23, and HASIntra, respectively. The results revealed SeHAS produced a polydisperse HMW-HA (268 kDa), while HAS123 and HAS23 produced a polydisperse LMW-HA (< 30 kDa). Interestingly, HASIntra produced a low-disperse LMW-HA. Kinetics studies revealed the truncated variants displayed increased Km values for two substrates when compared to the wild-type enzyme. Biological assessments indicated all LMW-HAs showed a dose-dependent proliferation activity on endothelial cells (ECs), whereas HMW-HAs exhibited an inhibitory effect. Also, LMW-HAs had the highest cell migration effect at 10 µg/mL, while at 200 µg/mL, both LMW- and HMW-HAs postponed the healing recovery rate. The study elucidated that the transmembrane domains (TMDs) of SeHAS affect the enzyme kinetics, HA-titer, HA-size, and HA-dispersity. These findings open new insight into the rational engineering of SeHAS to produce size-defined HA.
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Affiliation(s)
- Tahereh Ebrahimi
- New Technologies Research Group, Department of Nanobiotechnology, Pasteur Institute of Iran, Tehran, Iran
| | - Malihe Keramati
- New Technologies Research Group, Department of Nanobiotechnology, Pasteur Institute of Iran, Tehran, Iran.
| | - Farnaz Khodabakhsh
- Department of Genetics and Advanced Medical Technology, Faculty of Medicine, Medical Biotechnology Research Center, AJA University of Medical Sciences, Tehran, Iran
| | - Reza Ahangari Cohan
- New Technologies Research Group, Department of Nanobiotechnology, Pasteur Institute of Iran, Tehran, Iran.
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3
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Wang D, Hu L, Xu R, Zhang W, Xiong H, Wang Y, Du G, Kang Z. Production of different molecular weight glycosaminoglycans with microbial cell factories. Enzyme Microb Technol 2023; 171:110324. [PMID: 37742407 DOI: 10.1016/j.enzmictec.2023.110324] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 09/04/2023] [Accepted: 09/08/2023] [Indexed: 09/26/2023]
Abstract
Glycosaminoglycans (GAGs) are naturally occurring acidic polysaccharides with wide applications in pharmaceuticals, cosmetics, and health foods. The diverse biological activities and physiological functions of GAGs are closely associated with their molecular weights and sulfation patterns. Except for the non-sulfated hyaluronan which can be synthesized naturally by group A Streptococcus, all the other GAGs such as heparin and chondroitin sulfate are mainly acquired from animal tissues. Microbial cell factories provide a more effective platform for the production of structurally homogeneous GAGs. Enhancing the production efficiency of polysaccharides, accurately regulating the GAGs molecular weight, and effectively controlling the sulfation degree of GAGs represent the major challenges of developing GAGs microbial cell factories. Several enzymatic, metabolic engineering, and synthetic biology strategies have been developed to tackle these obstacles and push forward the industrialization of biotechnologically produced GAGs. This review summarizes the recent advances in the construction of GAGs synthesis cell factories, regulation of GAG molecular weight, and modification of GAGs chains. Furthermore, the challenges and prospects for future research in this field are also discussed.
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Affiliation(s)
- Daoan Wang
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; The Science Center for Future Foods, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Litao Hu
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; The Science Center for Future Foods, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Ruirui Xu
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; The Science Center for Future Foods, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Weijiao Zhang
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; The Science Center for Future Foods, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Haibo Xiong
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; The Science Center for Future Foods, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Yang Wang
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; The Science Center for Future Foods, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China
| | - Guocheng Du
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; The Science Center for Future Foods, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Zhen Kang
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; The Science Center for Future Foods, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, China; Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China.
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4
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Jabbari F, Babaeipour V, Saharkhiz S. Comprehensive review on biosynthesis of hyaluronic acid with different molecular weights and its biomedical applications. Int J Biol Macromol 2023; 240:124484. [PMID: 37068534 DOI: 10.1016/j.ijbiomac.2023.124484] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Revised: 04/11/2023] [Accepted: 04/12/2023] [Indexed: 04/19/2023]
Abstract
Hyaluronic acid (HA), an anionic and nonsulfated glycosaminoglycan, is the main structural component of various tissues and plays an important role in various biological processes. Given the promising properties of HA, such as high cellular compatibility, moisture retention, antiaging, proper interaction with cells, and CD44 targeting, HA can be widely used extensively in drug delivery, tissue engineering, wound healing, and cancer therapy. HA can obtain from animal tissues and microbial fermentation, but its applications depend on its molecular weight. Microbial fermentation is a common method for HA production on an industrial scale and S. zooepidemicus is the most frequently used strain in HA production. Culture conditions including pH, temperature, agitation rate, aeration speed, shear stress, dissolved oxygen, and bioreactor type significantly affect HA biosynthesis properties. In this review all the HA production methods and purification techniques to improve its physicochemical and biological properties for various biomedical applications are discussed in details. In addition, we showed that how HA molecular weight can significantly affect its properties and applications.
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Affiliation(s)
- Farzaneh Jabbari
- Nanotechnology and Advanced Materials Department, Materials and Energy Research Center, Tehran, Iran
| | - Valiollah Babaeipour
- Faculty of Chemistry and Chemical Engineering, Malek Ashtar University of Technology, Iran.
| | - Saeed Saharkhiz
- Faculty of Chemistry and Chemical Engineering, Malek Ashtar University of Technology, Iran
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Amjad Zanjani FS, Afrasiabi S, Norouzian D, Ahmadian G, Hosseinzadeh SA, Fayazi Barjin A, Cohan RA, Keramati M. Hyaluronic acid production and characterization by novel Bacillus subtilis harboring truncated Hyaluronan Synthase. AMB Express 2022; 12:88. [PMID: 35821141 PMCID: PMC9445140 DOI: 10.1186/s13568-022-01429-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 07/02/2022] [Indexed: 11/30/2022] Open
Abstract
Hyaluronic Acid (HA) is a natural biopolymer that has important physiological and industrial applications due to its viscoelastic and hydrophilic characteristics. The responsible enzyme for HA production is Hyaluronan synthase (HAS). Although in vitro structure–function of intact HAS enzyme has been partly identified, there is no data on in vivo function of truncated HAS forms. In the current study, novel recombinant Bacillus subtilis strains harboring full length (RBSFA) and truncated forms of SeHAS (RBSTr4 and RBSTr3) were developed and HA production was studied in terms of titer, production rate and molecular weight (Mw). The maximum HA titer for RBSFA, RBSTr4 and RBSTr3 was 602 ± 16.6, 503 ± 19.4 and 728 ± 22.9 mg/L, respectively. Also, the HA production rate was 20.02, 15.90 and 24.42 mg/L.h−1, respectively. The findings revealed that RBSTr3 produced 121% and 137% more HA rather than RBSFA and RBSTr4, respectively. More interestingly, the HA Mw was about 60 kDa for all strains which is much smaller than those obtained in prior studies. The strains containing truncated forms of SeHAS enzysme are able to produce HA. The HA from all recombinant strains was the same and low Mw. Deletion of C-terminal region of SeHAS was not effective on Mw.
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Affiliation(s)
| | - Shadi Afrasiabi
- Department of Nanobiotechnology, New Technologies Research Group, Pasteur Institute of Iran, Tehran, Iran
| | - Dariush Norouzian
- Department of Nanobiotechnology, New Technologies Research Group, Pasteur Institute of Iran, Tehran, Iran
| | - Gholamreza Ahmadian
- Department of Industrial and Environmental Biotechnology, National Institute for Genetic Engineering and Biotechnology (NIGEB), Tehran, Iran
| | - Sara Ali Hosseinzadeh
- Department of Nanobiotechnology, New Technologies Research Group, Pasteur Institute of Iran, Tehran, Iran
| | - Alireza Fayazi Barjin
- Department of Nanobiotechnology, New Technologies Research Group, Pasteur Institute of Iran, Tehran, Iran
| | - Reza Ahangari Cohan
- Department of Nanobiotechnology, New Technologies Research Group, Pasteur Institute of Iran, Tehran, Iran.
| | - Malihe Keramati
- Department of Nanobiotechnology, New Technologies Research Group, Pasteur Institute of Iran, Tehran, Iran.
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6
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Ma Y, Qiu Y, Yu C, Li S, Xu H. Design and construction of a Bacillus amyloliquefaciens cell factory for hyaluronic acid synthesis from Jerusalem artichoke inulin. Int J Biol Macromol 2022; 205:410-418. [PMID: 35202630 DOI: 10.1016/j.ijbiomac.2022.02.100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2021] [Revised: 01/21/2022] [Accepted: 02/16/2022] [Indexed: 11/05/2022]
Abstract
Hyaluronic acid (HA), a high-value biomacromolecule, has wide applications in medical, cosmetic and food fields. Currently, employing the safe-grade microorganisms for de novo biosynthesis of HA from renewable substrates has become a promising alternative. In this study, we established a Bacillus amyloliquefaciens strain as platform for HA production from Jerusalem artichoke inulin. Firstly, the different HA and UDP-GlcUA synthase genes were introduced into B. amyloliquefaciens to construct the HA synthesis pathway. Secondly, the byproduct polysaccharides were removed by knocking sacB and epsA-O using CRISPR/Cas9n system, resulting in a 13% increase in HA production. Finally, 2.89 g/L HA with a high molecular weight of 1.5 MDa was obtained after optimizing fermentation conditions and adding osmotic agents. This study demonstrates the engineered B. amyloliquefaciens can effectively synthesize HA with Jerusalem artichoke inulin and provides a green route for HA production.
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Affiliation(s)
- Yanqin Ma
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, PR China
| | - Yibin Qiu
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, PR China; College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, PR China; State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China
| | - Caiyuan Yu
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, PR China
| | - Sha Li
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, PR China.
| | - Hong Xu
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, PR China.
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7
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Qiu Y, Ma Y, Huang Y, Li S, Xu H, Su E. Current advances in the biosynthesis of hyaluronic acid with variable molecular weights. Carbohydr Polym 2021; 269:118320. [PMID: 34294332 DOI: 10.1016/j.carbpol.2021.118320] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 06/05/2021] [Accepted: 06/06/2021] [Indexed: 12/26/2022]
Abstract
Hyaluronic acid (HA) is a naturally formed acidic mucopolysaccharide, with excellent moisturising properties and used widely in the medicine, cosmetics, and food industries. The industrial production of specific molecular weight HA has become imperative. Different biological activities and physiological functions of HA mainly depend on the degree of polymerisation. This article reviews the research status and development prospects of the green biosynthesis and molecular weight regulation of HA. There is an application-based prerequisite of specific molecular weight of HA that could be regulated either during the fermentation process or via a controlled HA degradation process. This work provides an important theoretical basis for the downstream efficient production of diversified HA, which will further accelerate the research applications of HA and provide a good scientific basis and method reference for the study of the molecular weight regulation of similar biopolymers.
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Affiliation(s)
- Yibin Qiu
- College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, PR China; State Key Laboratory of Biobased Material and Green Papermaking, Qilu University of Technology, Shandong Academy of Sciences, Jinan 250353, PR China; Yangzhou Rixing Bio-Tech Co., Ltd., Yangzhou 225601, PR China.
| | - Yanqin Ma
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, PR China
| | - Yanyan Huang
- College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, PR China
| | - Sha Li
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, PR China
| | - Hong Xu
- College of Food Science and Light Industry, Nanjing Tech University, Nanjing 211816, PR China
| | - Erzheng Su
- College of Light Industry and Food Engineering, Nanjing Forestry University, Nanjing 210037, PR China.
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8
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Gunasekaran V, D G, V P. Role of membrane proteins in bacterial synthesis of hyaluronic acid and their potential in industrial production. Int J Biol Macromol 2020; 164:1916-1926. [PMID: 32791275 DOI: 10.1016/j.ijbiomac.2020.08.077] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 08/06/2020] [Accepted: 08/08/2020] [Indexed: 10/23/2022]
Abstract
Hyaluronic acid (HA) is a glycosaminoglycan polymer found in various parts of human body and is required for functions like lubrication, water homeostasis etc. Hyaluronic acid is mostly produced industrially by bacterial fermentation for pharmaceutical and cosmetic applications. This review discusses on the role of membrane proteins involved in synthesis and transport of bacterial HA, since HA is a transmembrane product. The different types of membrane proteins involved, their transcriptional control in wild type bacteria and the expression of those proteins in various recombinant hosts have been discussed. The role of phospholipids and metal ions on membrane proteins activity, HA yield and size of HA have also been discussed. Today with an estimated market of US$ 8.3 billion and which is expected to grow to US$ 15.25 billion in 2026, it is essential to increase the efficiency of the industrial HA production process. So this review also proposes on how those membrane proteins and cellular mechanisms like the transcriptional control can be utilised to develop efficient industrial strains that enhance the yield and size of HA produced.
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Affiliation(s)
| | - Gowdhaman D
- Biomass conversion and Bioproducts Laboratory, Center for Bioenergy, School of Chemical & Biotechnology, SASTRA Deemed University, Thirumalaisamudram, Tamil Nadu, India
| | - Ponnusami V
- Biomass conversion and Bioproducts Laboratory, Center for Bioenergy, School of Chemical & Biotechnology, SASTRA Deemed University, Thirumalaisamudram, Tamil Nadu, India.
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9
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Wei W, Faubel JL, Selvakumar H, Kovari DT, Tsao J, Rivas F, Mohabir AT, Krecker M, Rahbar E, Hall AR, Filler MA, Washburn JL, Weigel PH, Curtis JE. Self-regenerating giant hyaluronan polymer brushes. Nat Commun 2019; 10:5527. [PMID: 31797934 PMCID: PMC6892876 DOI: 10.1038/s41467-019-13440-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 11/08/2019] [Indexed: 12/25/2022] Open
Abstract
Tailoring interfaces with polymer brushes is a commonly used strategy to create functional materials for numerous applications. Existing methods are limited in brush thickness, the ability to generate high-density brushes of biopolymers, and the potential for regeneration. Here we introduce a scheme to synthesize ultra-thick regenerating hyaluronan polymer brushes using hyaluronan synthase. The platform provides a dynamic interface with tunable brush heights that extend up to 20 microns - two orders of magnitude thicker than standard brushes. The brushes are easily sculpted into micropatterned landscapes by photo-deactivation of the enzyme. Further, they provide a continuous source of megadalton hyaluronan or they can be covalently-stabilized to the surface. Stabilized brushes exhibit superb resistance to biofilms, yet are locally digested by fibroblasts. This brush technology provides opportunities in a range of arenas including regenerating tailorable biointerfaces for implants, wound healing or lubrication as well as fundamental studies of the glycocalyx and polymer physics.
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Affiliation(s)
- Wenbin Wei
- School of Physics, Georgia Institute of Technology, Atlanta, GA, USA
| | - Jessica L Faubel
- School of Physics, Georgia Institute of Technology, Atlanta, GA, USA
| | - Hemaa Selvakumar
- School of Physics, Georgia Institute of Technology, Atlanta, GA, USA
- Petit H. Parker Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, USA
| | - Daniel T Kovari
- School of Physics, Georgia Institute of Technology, Atlanta, GA, USA
- Department of Physics, Emory University, Atlanta, GA, USA
| | - Joanna Tsao
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Felipe Rivas
- Virginia Tech-Wake Forest University School of Biomedical Engineering and Sciences, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Amar T Mohabir
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Michelle Krecker
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Elaheh Rahbar
- Virginia Tech-Wake Forest University School of Biomedical Engineering and Sciences, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Adam R Hall
- Virginia Tech-Wake Forest University School of Biomedical Engineering and Sciences, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Michael A Filler
- School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA, USA
| | - Jennifer L Washburn
- Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Paul H Weigel
- Department of Biochemistry and Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK, USA
| | - Jennifer E Curtis
- School of Physics, Georgia Institute of Technology, Atlanta, GA, USA.
- Petit H. Parker Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, GA, USA.
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10
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Agarwal G, K V K, Prasad SB, Bhaduri A, Jayaraman G. Biosynthesis of Hyaluronic acid polymer: Dissecting the role of sub structural elements of hyaluronan synthase. Sci Rep 2019; 9:12510. [PMID: 31467312 PMCID: PMC6715743 DOI: 10.1038/s41598-019-48878-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Accepted: 08/09/2019] [Indexed: 12/25/2022] Open
Abstract
Hyaluronic acid (HA) based biomaterials have several biomedical applications. HA biosynthesis is catalysed by hyaluronan synthase (HAS). The unavailability of 3-D structure of HAS and gaps in molecular understanding of HA biosynthesis process pose challenges in rational engineering of HAS to control HA molecular weight and titer. Using in-silico approaches integrated with mutation studies, we define a dictionary of sub-structural elements (SSE) of the Class I Streptococcal HAS (SeHAS) to guide rational engineering. Our study identifies 9 SSE in HAS and elucidates their role in substrate and polymer binding and polymer biosynthesis. Molecular modelling and docking assessment indicate a single binding site for two UDP-substrates implying conformationally-driven alternating substrate specificities for this class of enzymes. This is the first report hypothesizing the involvement of sites from SSE5 in polymer binding. Mutation at these sites influence HA production, indicating a tight coupling of polymer binding and synthase functions. Mutation studies show dispensable role of Lys-139 in substrate binding and a key role of Gln-248 and Thr-283 in HA biosynthesis. Based on the functional architecture in SeHAS, we propose a plausible three-step polymer extension model from its reducing end. Together, these results open new avenues for rational engineering of Class I HAS to study and regulate its functional properties and enhanced understanding of glycosyltransferases and processive enzymes.
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Affiliation(s)
- Garima Agarwal
- Materials Simulation group, Samsung Advanced Institute of Technology, Samsung R&D Institute, Bengaluru, Karnataka, 560037, India.
| | - Krishnan K V
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Shashi Bala Prasad
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, 600036, India
| | - Anirban Bhaduri
- Materials Simulation group, Samsung Advanced Institute of Technology, Samsung R&D Institute, Bengaluru, Karnataka, 560037, India
| | - Guhan Jayaraman
- Department of Biotechnology, Bhupat and Jyoti Mehta School of Biosciences, Indian Institute of Technology Madras, Chennai, 600036, India.
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11
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Schulte S, Doss SS, Jeeva P, Ananth M, Blank LM, Jayaraman G. Exploiting the diversity of streptococcal hyaluronan synthases for the production of molecular weight–tailored hyaluronan. Appl Microbiol Biotechnol 2019; 103:7567-7581. [DOI: 10.1007/s00253-019-10023-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 07/11/2019] [Accepted: 07/12/2019] [Indexed: 11/28/2022]
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12
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Li Y, Li G, Zhao X, Shao Y, Wu M, Ma T. Regulation of hyaluronic acid molecular weight and titer by temperature in engineered Bacillus subtilis. 3 Biotech 2019; 9:225. [PMID: 31139540 DOI: 10.1007/s13205-019-1749-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Accepted: 05/08/2019] [Indexed: 11/27/2022] Open
Abstract
Hyaluronic acid (HA) is a biopolymer used in several industries. There is increasing global demand. HA is normally produced on a large scale using attenuated strains of group C streptococci that are pathogenic and fastidious. Accordingly, it is of interest to use a "generally recognized as safe" (GRAS) organism such as Bacillus subtilis for HA production. Here, we report an engineered B. subtilis strain named WmB that produces different molecular weights (MW) and titers of HA at different temperatures. The faster the bacteria grew, the lower the MW of HA produced and the higher the titer. The MW of HA obtained ranged from 6.937 MDa at 47 °C to 0.392 MDa at 32 °C. At 32 °C, the HA titer reached 3.65 ± 0.13 g/L. We have engineered a strain that can produce high-molecular-weight and medium-molecular-weight HA at different growth temperatures. This GRAS B. subtilis strain can be applied in industry and provides a new strategy for production of HA with different molecular weights.
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Affiliation(s)
- Yingying Li
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071 China
| | - Guoqiang Li
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071 China
| | - Xin Zhao
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071 China
| | - Yuzhe Shao
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071 China
| | - Mengmeng Wu
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071 China
| | - Ting Ma
- Key Laboratory of Molecular Microbiology and Technology, Ministry of Education, College of Life Sciences, Nankai University, Tianjin, 300071 China
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13
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Kang Z, Zhou Z, Wang Y, Huang H, Du G, Chen J. Bio-Based Strategies for Producing Glycosaminoglycans and Their Oligosaccharides. Trends Biotechnol 2018; 36:806-818. [DOI: 10.1016/j.tibtech.2018.03.010] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2017] [Revised: 03/21/2018] [Accepted: 03/23/2018] [Indexed: 01/06/2023]
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14
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Sun M, Puri S, Parfitt GJ, Mutoji N, Coulson-Thomas VJ. Hyaluronan Regulates Eyelid and Meibomian Gland Morphogenesis. Invest Ophthalmol Vis Sci 2018; 59:3713-3727. [PMID: 30046813 PMCID: PMC6059170 DOI: 10.1167/iovs.18-24292] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 05/30/2018] [Indexed: 12/20/2022] Open
Abstract
Purpose The Meibomian gland (MG) produces the lipid layer of the tear film, and changes to the MG that lead to a decrease or alteration in lipid quality/content may lead to MG dysfunction, a major cause of evaporative dry eye disease with prevalence ranging from 39% to 50%. Little is known about the developmental cues that regulate MG morphogenesis and homeostasis. Our study investigates the role of hyaluronan (HA), a major extracellular matrix component, in eyelid formation and MG development and function. Methods Hyaluronan synthase (Has) knockout mice were used to determine the role of HA in the eyelid and MG. Eyelids were obtained during different developmental stages and MG morphology was analyzed. Tet-off H2B-GFP/K5tTA mice and 5-ethynyl-2'-deoxyurdine (EdU) incorporation were used to determine the role of HA in maintaining slow-cycling and proliferating cells within the MG, respectively. Data were confirmed using an in vitro proliferation assay, differentiation assay and spheroid cultures. Results Has knockout mice present precocious MG development, and adult mice present MG hyperplasia and dysmorphic MGs and eyelids, with hyperplastic growths arising from the palpebral conjunctiva. Our data show that a highly organized HA network encompasses the MG, and basal cells are embedded within this HA matrix, which supports the proliferating cells. Spheroid cultures showed that HA promotes acini formation. Conclusions HA plays an important role in MG and eyelid development. Our findings suggest that Has knockout mice have abnormal HA synthesis, which in turn leads to precocious and exacerbated MG morphogenesis culminating in dysmorphic eyelids and MGs.
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Affiliation(s)
- Mingxia Sun
- College of Optometry, University of Houston, Houston, Texas, United States
| | - Sudan Puri
- College of Optometry, University of Houston, Houston, Texas, United States
| | - Geraint J. Parfitt
- European Cancer Stem Cell Research Institute, Cardiff University, Cardiff, Wales, United Kingdom
- School of Optometry and Vision Sciences, Cardiff University, Wales, United Kingdom
| | - Nadine Mutoji
- College of Optometry, University of Houston, Houston, Texas, United States
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15
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Westbrook AW, Ren X, Oh J, Moo-Young M, Chou CP. Metabolic engineering to enhance heterologous production of hyaluronic acid in Bacillus subtilis. Metab Eng 2018; 47:401-413. [PMID: 29698777 DOI: 10.1016/j.ymben.2018.04.016] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2017] [Revised: 04/03/2018] [Accepted: 04/20/2018] [Indexed: 12/11/2022]
Abstract
Hyaluronic acid (HA) is a high-value biopolymer that is produced in large scales using attenuated strains ofgroup C streptococci. However, due to the pathogenicity and fastidious nature of these bacteria, the development of bioprocesses for HA production centered on robust 'Generally Recognized as Safe (GRAS)' organisms, such as Bacillus subtilis, is of increased interest. Here, we report metabolic engineering of novel B. subtilis strains in which the carbon flux has been partially diverted from central metabolism, i.e. the pentose phosphate pathway (PPP) and glycolysis, into HA biosynthesis. First, an improved base strain of B. subtilis was engineered for more effective HA production with less susceptibility to catabolite repression when expressing genes from a xylose-inducible promoter. Subsequently, Clustered Regularly Interspaced Palindromic Repeats interference (CRISPRi) was applied to reduce the expression of individual pfkA or zwf in the base strain, leading to substantial improvements to the HA titer with a concomitant decrease in the molecular weight (MW). On the other hand, multiplexed repression of both pfkA and zwf expression resulted in increases to the HA titer of up to 108% and enhancements to the MW, compared to the base strain. Moreover, the addition of exogenous HA monomers, i.e. glucuronic acid (GlcUA) and N-acetyl-glucosamine (GlcNAc), to B. subtilis cultures markedly improved the HA MW but decreased the HA titer, providing insights into the mechanism of HA biosynthesis by streptococcal hyaluronan synthase (SeHAS) in B. subtilis. Our study demonstrates the successful application of metabolic engineering strategies to establish B. subtilis as an effective platform for high-level HA production.
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Affiliation(s)
- Adam W Westbrook
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada N2L 5B6
| | - Xiang Ren
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada N2L 5B6
| | - Jaewon Oh
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada N2L 5B6
| | - Murray Moo-Young
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada N2L 5B6
| | - C Perry Chou
- Department of Chemical Engineering, University of Waterloo, Waterloo, Ontario, Canada N2L 5B6.
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16
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Westbrook AW, Ren X, Moo-Young M, Chou CP. Application of hydrocarbon and perfluorocarbon oxygen vectors to enhance heterologous production of hyaluronic acid in engineeredBacillus subtilis. Biotechnol Bioeng 2018; 115:1239-1252. [DOI: 10.1002/bit.26551] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 12/21/2017] [Accepted: 01/15/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Adam W. Westbrook
- Department of Chemical Engineering; University of Waterloo; Waterloo Ontario Canada
| | - Xiang Ren
- Department of Chemical Engineering; University of Waterloo; Waterloo Ontario Canada
| | - Murray Moo-Young
- Department of Chemical Engineering; University of Waterloo; Waterloo Ontario Canada
| | - C. Perry Chou
- Department of Chemical Engineering; University of Waterloo; Waterloo Ontario Canada
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17
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Westbrook AW, Ren X, Moo-Young M, Chou CP. Engineering of cell membrane to enhance heterologous production of hyaluronic acid in Bacillus subtilis. Biotechnol Bioeng 2017; 115:216-231. [DOI: 10.1002/bit.26459] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Revised: 09/15/2017] [Accepted: 09/21/2017] [Indexed: 12/20/2022]
Affiliation(s)
- Adam W. Westbrook
- Department of Chemical Engineering; University of Waterloo; Waterloo Ontario Canada
| | - Xiang Ren
- Department of Chemical Engineering; University of Waterloo; Waterloo Ontario Canada
| | - Murray Moo-Young
- Department of Chemical Engineering; University of Waterloo; Waterloo Ontario Canada
| | - C. Perry Chou
- Department of Chemical Engineering; University of Waterloo; Waterloo Ontario Canada
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18
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Yang J, Cheng F, Yu H, Wang J, Guo Z, Stephanopoulos G. Key Role of the Carboxyl Terminus of Hyaluronan Synthase in Processive Synthesis and Size Control of Hyaluronic Acid Polymers. Biomacromolecules 2017; 18:1064-1073. [DOI: 10.1021/acs.biomac.6b01239] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
| | | | | | | | | | - Gregory Stephanopoulos
- Department
of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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19
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Baggenstoss BA, Harris EN, Washburn JL, Medina AP, Nguyen L, Weigel PH. Hyaluronan synthase control of synthesis rate and hyaluronan product size are independent functions differentially affected by mutations in a conserved tandem B-X7-B motif. Glycobiology 2016; 27:154-164. [PMID: 27558839 DOI: 10.1093/glycob/cww089] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 08/18/2016] [Accepted: 08/18/2016] [Indexed: 01/27/2023] Open
Abstract
Hyaluronan synthases (HAS) normally make large (>MDa) hyaluronan (HA) products. Smaller HA fragments (e.g. 100-400 kDa) produced in vivo are associated with inflammation and cell signaling by HA receptors that bind small, but not large, HA. Although HA fragments can arise from breakdown by hyaluronidases, HAS might also be regulated directly to synthesize small HA. Here we examined the Streptococcus equisimilis HAS (SeHAS) C-terminus, which contains a tandem B-X7-B motif (K398-X7-R406-X7-K414), by testing the effects of 27 site-specific scanning mutations and 7 C-terminal truncations on HA synthesis activity and weight-average mass. Although HAS enzymes cannot be HA-binding proteins, these motifs are highly conserved within the Class I HAS family. Fifteen Arg406 mutants made large MDa HA (86-110% wildtype size), with specific activities from 70% to 177% of wildtype. In contrast, 10 of 12 Lys398 mutants made HA that was 8-14% of wildtype size (≤250-480 kDa), with specific activities from 14% to 64% of wildtype. Four nearly inactive (2% wildtype activity) C-terminal truncation mutants made MDa HA (56-71% wildtype). The results confirm earlier findings with Cys-mutants [Weigel PH, Baggenstoss BA. 2012. Hyaluronan synthase polymerizing activity and control of product size are discrete enzyme functions that can be uncoupled by mutagenesis of conserved cysteines. Glycobiology 22:1302-1310] that HAS uses two independent activities to control HA size and HA synthesis rate; these are two separate functions. We conclude that HAS regulatory modifications that alter tandem B-X7-B motif conformation could mimic these mutagenesis-induced effects, allowing HAS in vivo to make small HA directly. The results also support a model in which the tandem-motif region is part of the intra-HAS pore and interacts directly with HA.
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Affiliation(s)
- Bruce A Baggenstoss
- Department of Biochemistry & Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Edward N Harris
- Department of Biochemistry & Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Jennifer L Washburn
- Department of Biochemistry & Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Andria P Medina
- Department of Biochemistry & Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Long Nguyen
- Department of Biochemistry & Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Paul H Weigel
- Department of Biochemistry & Molecular Biology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
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Hyaluronan Synthase: The Mechanism of Initiation at the Reducing End and a Pendulum Model for Polysaccharide Translocation to the Cell Exterior. Int J Cell Biol 2015; 2015:367579. [PMID: 26472958 PMCID: PMC4581545 DOI: 10.1155/2015/367579] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2014] [Accepted: 01/14/2015] [Indexed: 12/05/2022] Open
Abstract
Hyaluronan (HA) biosynthesis has been studied for over six decades, but our understanding of the biochemical details of how HA synthase (HAS) assembles HA is still incomplete. Class I family members include mammalian and streptococcal HASs, the focus of this review, which add new intracellular sugar-UDPs at the reducing end of growing hyaluronyl-UDP chains. HA-producing cells typically create extracellular HA coats (capsules) and also secrete HA into the surrounding space. Since HAS contains multiple transmembrane domains and is lipid-dependent, we proposed in 1999 that it creates an intraprotein HAS-lipid pore through which a growing HA-UDP chain is translocated continuously across the cell membrane to the exterior. We review here the evidence for a synthase pore-mediated polysaccharide translocation process and describe a possible mechanism (the Pendulum Model) and potential energy sources to drive this ATP-independent process. HA synthases also synthesize chitin oligosaccharides, which are created by cleavage of novel oligo-chitosyl-UDP products. The synthesis of chitin-UDP oligomers by HAS confirms the reducing end mechanism for sugar addition during HA assembly by streptococcal and mammalian Class I enzymes. These new findings indicate the possibility that HA biosynthesis is initiated by the ability of HAS to use chitin-UDP oligomers as self-primers.
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21
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Schmaus A, Bauer J, Sleeman JP. Sugars in the microenvironment: the sticky problem of HA turnover in tumors. Cancer Metastasis Rev 2015; 33:1059-79. [PMID: 25324146 DOI: 10.1007/s10555-014-9532-2] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The properties and behavior of tumor cells are closely regulated by their microenvironment. Accordingly, stromal cells and extracellular matrix components can have a pronounced effect on cancer initiation, growth, and progression. The linear glycosaminoglycan hyaluronan (HA) is a major component of the extracellular matrix. Altered synthesis and degradation of HA in the tumor context has been implicated in many aspects of tumor biology. In particular, the accumulation of small HA oligosaccharides (sHA) in the tumor interstitial space may play a decisive role, due to the ability of sHA to activate a number of biological processes that are not modulated by high molecular weight (HMW)-HA. In this article, we review the normal physiological role and metabolism of HA and then survey the evidence implicating HA in tumor growth and progression, focusing in particular on the potential contribution of sHA to these processes.
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Affiliation(s)
- Anja Schmaus
- Institut für Toxikologie und Genetik, Karlsruhe Institute for Technology (KIT), Campus Nord, Postfach 3640, 76021, Karlsruhe, Germany
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22
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Weigel PH, West CM, Zhao P, Wells L, Baggenstoss BA, Washburn JL. Hyaluronan synthase assembles chitin oligomers with -GlcNAc(α1→)UDP at the reducing end. Glycobiology 2015; 25:632-43. [PMID: 25583822 DOI: 10.1093/glycob/cwv006] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2014] [Accepted: 01/08/2015] [Indexed: 11/13/2022] Open
Abstract
Class I hyaluronan synthases (HASs) assemble a polysaccharide containing the repeating disaccharide [GlcNAc(β1,4)GlcUA(β1,3)]n-UDP and vertebrate HASs also assemble (GlcNAc-β1,4)n homo-oligomers (chitin) in the absence of GlcUA-UDP. This multi-membrane domain CAZy GT2 family glycosyltransferase, which couples HA synthesis and translocation across the cell membrane, is atypical in that monosaccharides are incrementally assembled at the reducing, rather than the non-reducing, end of the growing polymer. Using Escherichia coli membranes containing recombinant Streptococcus equisimilis HAS, we demonstrate that a prokaryotic Class I HAS also synthesizes chitin oligomers (up to 15-mers, based on MS and MS/MS analyses of permethylated products). Furthermore, chitin oligomers were found attached at their reducing end to -4GlcNAc(α1→)UDP [i.e. (GlcNAcβ1,4)nGlcNAc(α1→)UDP]. These oligomers, which contained up to at least seven HexNAc residues, consisted of β4-linked GlcNAc residues, based on the sensitivity of the native products to jack bean β-N-acetylhexosaminidase. Interestingly, these oligomers exhibited mass defects of -2, or -4 for longer oligomers, that strictly depended on conjugation to UDP, but MS/MS analyses indicate that these species result from chemical dehydrogenations occurring in the gas phase. Identification of (GlcNAc-β1,4)n-GlcNAc(α1→)UDP as HAS reaction products, made in the presence of GlcNAc(α1→)UDP only, provides strong independent confirmation for the reducing terminal addition mechanism. We conclude that chitin oligomer products made by HAS are derived from the cleavage of these novel activated oligo-chitosyl-UDP oligomers. Furthermore, it is possible that these UDP-activated chitin oligomers could serve as self-assembled primers for initiating HA synthesis and ultimately modify the non-reducing terminus of HA with a chitin cap.
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Affiliation(s)
- Paul H Weigel
- Department of Biochemistry and Molecular Biology and the Oklahoma Center for Medical Glycobiology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Christopher M West
- Department of Biochemistry and Molecular Biology and the Oklahoma Center for Medical Glycobiology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Peng Zhao
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602-4712, USA
| | - Lance Wells
- Complex Carbohydrate Research Center, University of Georgia, Athens, GA 30602-4712, USA
| | - Bruce A Baggenstoss
- Department of Biochemistry and Molecular Biology and the Oklahoma Center for Medical Glycobiology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
| | - Jennifer L Washburn
- Department of Biochemistry and Molecular Biology and the Oklahoma Center for Medical Glycobiology, University of Oklahoma Health Sciences Center, Oklahoma City, OK 73104, USA
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23
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Pandey MS, Baggenstoss BA, Washburn J, Harris EN, Weigel PH. The hyaluronan receptor for endocytosis (HARE) activates NF-κB-mediated gene expression in response to 40-400-kDa, but not smaller or larger, hyaluronans. J Biol Chem 2013; 288:14068-14079. [PMID: 23530033 PMCID: PMC3656264 DOI: 10.1074/jbc.m112.442889] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2012] [Revised: 03/13/2013] [Indexed: 01/12/2023] Open
Abstract
The hyaluronan (HA) receptor for endocytosis (HARE; Stabilin-2) binds and clears 14 different ligands, including HA and heparin, via clathrin-mediated endocytosis. HA binding to HARE stimulates ERK1/2 activation (Kyosseva, S. V., Harris, E. N., and Weigel, P. H. (2008) J. Biol. Chem. 283, 15047-15055). To assess a possible HA size dependence for signaling, we tested purified HA fractions of different weight-average molar mass and with narrow size distributions and Select-HA(TM) for stimulation of HARE-mediated gene expression using an NF-κB promoter-driven luciferase reporter system. Human HARE-mediated gene expression was stimulated in a dose-dependent manner with small HA (sHA) >40 kDa and intermediate HA (iHA) <400 kDa. The hyperbolic dose response saturated at 20-50 nM with an apparent K(m) ~10 nM, identical to the Kd for HA-HARE binding. Activation was not detected with oligomeric HA (oHA), sHA <40 kDa, iHA >400 kDa, or large HA (lHA). Similar responses occurred with rat HARE. Activation by sHA-iHA was blocked by excess nonsignaling sHA, iHA, or lHA, deletion of the HA-binding LINK domain, or HA-blocking antibody. Endogenous NF-κB activation also occurred in the absence of luciferase plasmids, as assessed by degradation of IκB-α. ERK1/2 activation was also HA size-dependent. The results show that HA-HARE interactions stimulate NF-κB-activated gene expression and that HARE senses a narrow size range of HA degradation products. We propose a model in which optimal length HA binds multiple HARE proteins to allow cytoplasmic domain interactions that stimulate intracellular signaling. This HARE signaling system during continuous HA clearance could monitor the homeostasis of tissue biomatrix turnover throughout the body.
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Affiliation(s)
- Madhu S Pandey
- Department of Biochemistry and Molecular Biology, Oklahoma Center for Medical Glycobiology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104
| | - Bruce A Baggenstoss
- Department of Biochemistry and Molecular Biology, Oklahoma Center for Medical Glycobiology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104
| | - Jennifer Washburn
- Department of Biochemistry and Molecular Biology, Oklahoma Center for Medical Glycobiology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104
| | - Edward N Harris
- Department of Biochemistry, University of Nebraska, Lincoln, Nebraska 68588
| | - Paul H Weigel
- Department of Biochemistry and Molecular Biology, Oklahoma Center for Medical Glycobiology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73104.
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