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Hashimoto S, Nagoshi N, Nakamura M, Okano H. Regenerative medicine strategies for chronic complete spinal cord injury. Neural Regen Res 2024; 19:818-824. [PMID: 37843217 PMCID: PMC10664101 DOI: 10.4103/1673-5374.382230] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 05/30/2023] [Accepted: 06/27/2023] [Indexed: 10/17/2023] Open
Abstract
Spinal cord injury is a condition in which the parenchyma of the spinal cord is damaged by trauma or various diseases. While rapid progress has been made in regenerative medicine for spinal cord injury that was previously untreatable, most research in this field has focused on the early phase of incomplete injury. However, the majority of patients have chronic severe injuries; therefore, treatments for these situations are of fundamental importance. The reason why the treatment of complete spinal cord injury has not been studied is that, unlike in the early stage of incomplete spinal cord injury, there are various inhibitors of neural regeneration. Thus, we assumed that it is difficult to address all conditions with a single treatment in chronic complete spinal cord injury and that a combination of several treatments is essential to target severe pathologies. First, we established a combination therapy of cell transplantation and drug-releasing scaffolds, which contributes to functional recovery after chronic complete transection spinal cord injury, but we found that functional recovery was limited and still needs further investigation. Here, for the further development of the treatment of chronic complete spinal cord injury, we review the necessary approaches to the different pathologies based on our findings and the many studies that have been accumulated to date and discuss, with reference to the literature, which combination of treatments is most effective in achieving functional recovery.
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Affiliation(s)
- Shogo Hashimoto
- Department of Orthopedic Surgery, Keio University School of Medicine, Tokyo, Japan
- Department of Physiology, Keio University School of Medicine, Tokyo, Japan
| | - Narihito Nagoshi
- Department of Orthopedic Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Masaya Nakamura
- Department of Orthopedic Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Hideyuki Okano
- Department of Physiology, Keio University School of Medicine, Tokyo, Japan
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2
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Afraei F, Daneshjou S, Dabirmanesh B. Synthesis and evaluation of nanosystem containing chondroitinase ABCI based on hydroxyapatite. AMB Express 2024; 14:23. [PMID: 38353777 PMCID: PMC10866842 DOI: 10.1186/s13568-024-01677-5] [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: 06/16/2023] [Accepted: 01/31/2024] [Indexed: 02/17/2024] Open
Abstract
The bacterial enzyme chondroitinase ABCI (chABCI), which has been isolated from Proteus Vulgaris, is crucial in the treatment of spinal cord injuries. However, due to its short lifespan, the maintenance and clinical application of this enzyme are very constrained. In this study, the immobilization of this enzyme on hydroxyapatite has been carried out and assessed with the aim of enhancing the characteristics and efficiency of chABCI. Hydroxyapatite particles (HAPs) are a potential candidate for drug-delivery carriers because of their excellent biocompatibility, shape controllability, and high adsorption. The use of the nanometer scale allows efficient access to the enzyme's substrate. It demonstrates important biological application capabilities in this way. Field emission gun-scanning electron microscopy (FEG-SEM), X-ray diffraction (XRD), infrared spectroscopy (FT-IR), in vitro release study, and cytotoxicity test were used to characterize the drug nanosystem's properties. According to the findings, electrostatic bindings was formed between charged groups of the enzyme and hydroxyapatite nanoparticles. The results also demonstrated that immobilized chABCI on hydroxyapatite has beneficial properties, such as more manageable drug release, minimal toxicity and side effects, and a high potential to enhance the efficacy of drug delivery and decrease the need for repeated injections.
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Affiliation(s)
- Fatemeh Afraei
- Department of Nanobiotechnology, Faculty of Biological Science, Tarbiat Modares University, Tehran, Iran
| | - Sara Daneshjou
- Department of Nanobiotechnology, Faculty of Biological Science, Tarbiat Modares University, Tehran, Iran.
| | - Bahareh Dabirmanesh
- Department of Biochemistry, Faculty of Biological Science, Tarbiat Modares University, Tehran, Iran
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3
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Kheirollahi A, Sadeghi S, Orandi S, Moayedi K, Khajeh K, Khoobi M, Golestani A. Chondroitinase as a therapeutic enzyme: Prospects and challenges. Enzyme Microb Technol 2024; 172:110348. [PMID: 37898093 DOI: 10.1016/j.enzmictec.2023.110348] [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: 05/22/2023] [Revised: 09/28/2023] [Accepted: 10/19/2023] [Indexed: 10/30/2023]
Abstract
The chondroitinases (Chase) are bacterial lyases that specifically digest chondroitin sulfate and/or dermatan sulfate glycosaminoglycans via a β-elimination reaction and generate unsaturated disaccharides. In recent decades, these enzymes have attracted the attention of many researchers due to their potential applications in various aspects of medicine from the treatment of spinal cord injury to use as an analytical tool. In spite of this diverse spectrum, the application of Chase is faced with several limitations and challenges such as thermal instability and lack of a suitable delivery system. In the current review, we address potential therapeutic applications of Chase with emphasis on the challenges ahead. Then, we summarize the latest achievements to overcome the problems by considering the studies carried out in the field of enzyme engineering, drug delivery, and combination-based therapy.
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Affiliation(s)
- Asma Kheirollahi
- Department of Comparative Biosciences, Faculty of Veterinary Medicine, University of Tehran, Tehran, Iran
| | - Solmaz Sadeghi
- Department of Medical Biotechnology, School of Advanced Technologies in Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Shirin Orandi
- Department of Clinical Biochemistry, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Kiana Moayedi
- Department of Clinical Biochemistry, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Khosro Khajeh
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran 14115-154, Iran
| | - Mehdi Khoobi
- Department of Radiopharmacy, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran; Department of Pharmaceutical Biomaterials and Medical Biomaterials Research Center, Faculty of Pharmacy, Tehran University of Medical Sciences, Tehran, Iran
| | - Abolfazl Golestani
- Department of Clinical Biochemistry, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
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4
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Du M, Wei L, Yuan M, Zou R, Xu Y, Wang X, Wang W, Li F. Enzymatic comparison of two homologous enzymes reveals N-terminal domain of chondroitinase ABC I regulates substrate selection and product generation. J Biol Chem 2023; 299:104692. [PMID: 37031818 DOI: 10.1016/j.jbc.2023.104692] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 03/19/2023] [Accepted: 04/05/2023] [Indexed: 04/11/2023] Open
Abstract
Chondroitinase ABC-type I (CSase ABC I), which can digest both chondroitin sulfate (CS) and dermatan sulfate (DS) in an endolytic manner, is an essential tool in structural and functional studies of CS/DS. Although a few CSase ABC I have been identified from bacteria, the substrate-degrading pattern and regulatory mechanisms of them have rarely been investigated. Herein, two CSase ABC I, IM3796 and IM1634, were identified from the intestinal metagenome of CS-fed mice. They show high sequence homology (query coverage: 88.00%, percent identity: 90.10%) except for an extra peptide (Met1-His109) at the N-terminus in IM1634, but their enzymatic properties are very different. IM3796 prefers to degrade 6-O-sulfated GalNAc residue-enriched CS into tetra- and disaccharides. In contrast, IM1634 exhibits nearly a thousand times more activity than IM3796, and can completely digest CS/DS with various sulfation patterns to produce disaccharides, unlike most CSase ABC I. Structure modeling showed that IM3796 did not contain an N-terminal domain composed of two β-sheets, which is found in IM1634 and other CSase ABC I. Furthermore, deletion of the N-terminal domain (Met1-His109) from IM1634 caused the enzymatic properties of the variant IM1634-T109 to be similar to those of IM3796, and conversely, grafting this domain to IM3796 increased the similarity of the variant IM3796-A109 to IM1634. In conclusion, the comparative study of the new CSase ABC I provides two unique tools for CS/DS-related studies and applications and, more importantly, reveals the critical role of the N-terminal domain in regulating the substrate binding and degradation of these enzymes.
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Affiliation(s)
- Min Du
- National Glycoengineering Research Center and Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, Qingdao, China
| | - Lin Wei
- National Glycoengineering Research Center and Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, Qingdao, China
| | - Min Yuan
- National Glycoengineering Research Center and Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, Qingdao, China
| | - Ruyi Zou
- National Glycoengineering Research Center and Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, Qingdao, China
| | - Yingying Xu
- National Glycoengineering Research Center and Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, Qingdao, China
| | - Xu Wang
- National Glycoengineering Research Center and Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, Qingdao, China
| | - Wenshuang Wang
- National Glycoengineering Research Center and Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, Qingdao, China.
| | - Fuchuan Li
- National Glycoengineering Research Center and Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, Qingdao, China; College of Marine Life Sciences, Ocean University of China, Qingdao, China.
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5
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Enzyme Kinetics Features of the Representative Engineered Recombinants of Chondroitinase ABC I. Protein J 2023; 42:55-63. [PMID: 36715784 DOI: 10.1007/s10930-023-10093-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/18/2023] [Indexed: 01/31/2023]
Abstract
Chondroitinase ABC I (cABC I) from Proteus vulgaris is an important enzyme in medicinal biotechnology due to its ability to help axon regeneration after spinal cord injury. Its practical application involves solving several problems at the molecular and cellular levels. Structurally, most residues at the C-terminal domain of cABC I are arranged as organized strands, and only a small fraction of residues have helical conformation. The structural and functional features of modified residues on two specific helix fragments have previously been reported. The single mutant M889K has been combined with L679S and L679D mutants to make enzyme variants containing simultaneously modified helix. Here, the pH stability and temperature-based analysis of the transition state structure for the catalysis reaction were investigated. We found that double mutant L679D/M889K is the better choice to use in physiological conditions due to its higher pH stability at physiological pH as well as its different optimum temperature as compared with the (wild-type) WT protein. According to Arrhenius's analysis, the values of the Gibbs free energy of the transition state (∆G#) are not changed upon mutation. However, the relative contribution and absolute values of the enthalpy and entropy change to the total value of ∆G#, varied between the WT and mutants.
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Lima R, Monteiro A, Salgado AJ, Monteiro S, Silva NA. Pathophysiology and Therapeutic Approaches for Spinal Cord Injury. Int J Mol Sci 2022; 23:ijms232213833. [PMID: 36430308 PMCID: PMC9698625 DOI: 10.3390/ijms232213833] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 11/07/2022] [Indexed: 11/12/2022] Open
Abstract
Spinal cord injury (SCI) is a disabling condition that disrupts motor, sensory, and autonomic functions. Despite extensive research in the last decades, SCI continues to be a global health priority affecting thousands of individuals every year. The lack of effective therapeutic strategies for patients with SCI reflects its complex pathophysiology that leads to the point of no return in its function repair and regeneration capacity. Recently, however, several studies started to uncover the intricate network of mechanisms involved in SCI leading to the development of new therapeutic approaches. In this work, we present a detailed description of the physiology and anatomy of the spinal cord and the pathophysiology of SCI. Additionally, we provide an overview of different molecular strategies that demonstrate promising potential in the modulation of the secondary injury events that promote neuroprotection or neuroregeneration. We also briefly discuss other emerging therapies, including cell-based therapies, biomaterials, and epidural electric stimulation. A successful therapy might target different pathologic events to control the progression of secondary damage of SCI and promote regeneration leading to functional recovery.
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Affiliation(s)
- Rui Lima
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, 4710-057 Braga, Portugal
- ICVS/3B’s Associate Laboratory, PT Government Associated Laboratory, 4806-909 Braga/Guimarães, Portugal
| | - Andreia Monteiro
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, 4710-057 Braga, Portugal
- ICVS/3B’s Associate Laboratory, PT Government Associated Laboratory, 4806-909 Braga/Guimarães, Portugal
| | - António J. Salgado
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, 4710-057 Braga, Portugal
- ICVS/3B’s Associate Laboratory, PT Government Associated Laboratory, 4806-909 Braga/Guimarães, Portugal
| | - Susana Monteiro
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, 4710-057 Braga, Portugal
- ICVS/3B’s Associate Laboratory, PT Government Associated Laboratory, 4806-909 Braga/Guimarães, Portugal
| | - Nuno A. Silva
- Life and Health Sciences Research Institute (ICVS), School of Medicine, University of Minho, 4710-057 Braga, Portugal
- ICVS/3B’s Associate Laboratory, PT Government Associated Laboratory, 4806-909 Braga/Guimarães, Portugal
- Correspondence:
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7
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Hungatella hathewayi, an Efficient Glycosaminoglycan-Degrading
Firmicutes
from Human Gut and Its Chondroitin ABC Exolyase with High Activity and Broad Substrate Specificity. Appl Environ Microbiol 2022; 88:e0154622. [PMID: 36342199 PMCID: PMC9680638 DOI: 10.1128/aem.01546-22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
An increased understanding of GAG metabolism by intestinal bacteria is critical in identifying the driving factors for the composition, modulation, and homeostasis of the human gut microbiota. In addition, GAG-depolymerizing polysaccharide lyases are highly desired enzymes for the production of GAG oligosaccharides and as therapeutics.
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8
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Smith MM, Melrose J. Xylan Prebiotics and the Gut Microbiome Promote Health and Wellbeing: Potential Novel Roles for Pentosan Polysulfate. Pharmaceuticals (Basel) 2022; 15:ph15091151. [PMID: 36145372 PMCID: PMC9503530 DOI: 10.3390/ph15091151] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Revised: 08/17/2022] [Accepted: 09/09/2022] [Indexed: 12/12/2022] Open
Abstract
This narrative review highlights the complexities of the gut microbiome and health-promoting properties of prebiotic xylans metabolized by the gut microbiome. In animal husbandry, prebiotic xylans aid in the maintenance of a healthy gut microbiome. This prevents the colonization of the gut by pathogenic organisms obviating the need for dietary antibiotic supplementation, a practice which has been used to maintain animal productivity but which has led to the emergence of antibiotic resistant bacteria that are passed up the food chain to humans. Seaweed xylan-based animal foodstuffs have been developed to eliminate ruminant green-house gas emissions by gut methanogens in ruminant animals, contributing to atmospheric pollution. Biotransformation of pentosan polysulfate by the gut microbiome converts this semi-synthetic sulfated disease-modifying anti-osteoarthritic heparinoid drug to a prebiotic metabolite that promotes gut health, further extending the therapeutic profile and utility of this therapeutic molecule. Xylans are prominent dietary cereal components of the human diet which travel through the gastrointestinal tract as non-digested dietary fibre since the human genome does not contain xylanolytic enzymes. The gut microbiota however digest xylans as a food source. Xylo-oligosaccharides generated in this digestive process have prebiotic health-promoting properties. Engineered commensal probiotic bacteria also have been developed which have been engineered to produce growth factors and other bioactive factors. A xylan protein induction system controls the secretion of these compounds by the commensal bacteria which can promote gut health or, if these prebiotic compounds are transported by the vagal nervous system, may also regulate the health of linked organ systems via the gut–brain, gut–lung and gut–stomach axes. Dietary xylans are thus emerging therapeutic compounds warranting further study in novel disease prevention protocols.
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Affiliation(s)
- Margaret M. Smith
- Raymond Purves Laboratory of Bone and Joint Research, Kolling Institute of Medical Research, Faculty of Health and Science, University of Sydney at Royal North Shore Hospital, St. Leonards, NSW 2065, Australia
| | - James Melrose
- Raymond Purves Laboratory of Bone and Joint Research, Kolling Institute of Medical Research, Faculty of Health and Science, University of Sydney at Royal North Shore Hospital, St. Leonards, NSW 2065, Australia
- Graduate School of Biomedical Engineering, University of New South Wales, Sydney, NSW 2052, Australia
- Sydney Medical School, Northern Campus, University of Sydney at Royal North Shore Hospital, St. Leonards, NSW 2065, Australia
- Correspondence:
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9
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Rawat PS, Seyed Hameed AS, Meng X, Liu W. Utilization of glycosaminoglycans by the human gut microbiota: participating bacteria and their enzymatic machineries. Gut Microbes 2022; 14:2068367. [PMID: 35482895 PMCID: PMC9067506 DOI: 10.1080/19490976.2022.2068367] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Glycosaminoglycans (GAGs) are consistently present in the human colon in free forms and as part of proteoglycans. Their utilization is critical for the colonization and proliferation of gut bacteria and also the health of hosts. Hence, it is essential to determine the GAG-degrading members of the gut bacteria and their enzymatic machinery for GAG depolymerization. In this review, we have summarized the reported GAG utilizers from Bacteroides and presented their polysaccharide utilization loci (PUL) and related enzymatic machineries for the degradation of chondroitin and heparin/heparan sulfate. Although similar comprehensive knowledge of GAG degradation is not available for other gut phyla, we have specified recently isolated GAG degraders from gut Firmicutes and Proteobacteria, and analyzed their genomes for the presence of putative GAG PULs. Deciphering the precise GAG utilization mechanism for various phyla will augment our understanding of their effects on human health.
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Affiliation(s)
- Parkash Singh Rawat
- State Key Laboratory of Microbial Technology, Microbial Technology Institute, Shandong University, No.72 Binhai Road, Qingdao266237, P. R. China
| | - Ahkam Saddam Seyed Hameed
- State Key Laboratory of Microbial Technology, Microbial Technology Institute, Shandong University, No.72 Binhai Road, Qingdao266237, P. R. China
| | - Xiangfeng Meng
- State Key Laboratory of Microbial Technology, Microbial Technology Institute, Shandong University, No.72 Binhai Road, Qingdao266237, P. R. China,CONTACT Xiangfeng Meng State Key Laboratory of Microbial Technology, Microbial Technology Institute, Shandong University, No.72 Binhai Road, Qingdao266237, P. R. China
| | - Weifeng Liu
- State Key Laboratory of Microbial Technology, Microbial Technology Institute, Shandong University, No.72 Binhai Road, Qingdao266237, P. R. China
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10
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Fan XM, Huang JY, Ling XM, Wei W, Su WB, Zhang YW. A Highly Active Chondroitin Sulfate Lyase ABC for Enzymatic Depolymerization of Chondroitin Sulfate. Polymers (Basel) 2022; 14:polym14091770. [PMID: 35566938 PMCID: PMC9100776 DOI: 10.3390/polym14091770] [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: 12/05/2021] [Revised: 01/20/2022] [Accepted: 01/23/2022] [Indexed: 11/16/2022] Open
Abstract
Enzymatic preparation of low-molecular-weight chondroitin sulfate (LMWCS) has received increasing attention. In this work, a chondroitin sulfate lyase ABC (Chon-ABC) was successfully cloned, expressed, and characterized. The Km and Vmax of the Chon-ABC were 0.54 mM and 541.3 U mg−1, respectively. The maximal activity was assayed as 500.4 U mg−1 at 37 °C in pH 8.0 phosphate buffer saline. The half-lives of the Chon-ABC were 133 d and 127 min at 4 °C and 37 °C, respectively. Enzymatic preparation of LMWCS was performed at room temperature for 30 min. The changes between the substrate and product were analyzed with mass spectrometry (MS), high-performance liquid chromatography (HPLC), gel permeation chromatography (GPC), and nuclear magnetic resonance (NMR). Overall, the Chon-ABC from Bacteroides thetaiotaomicron is competitive in large-scale enzymatic preparation of LMWCS for its high activity, stability, and substrate specificity.
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Enzymatic Degradation of Cortical Perineuronal Nets Reverses GABAergic Interneuron Maturation. Mol Neurobiol 2022; 59:2874-2893. [PMID: 35233718 PMCID: PMC9016038 DOI: 10.1007/s12035-022-02772-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 02/16/2022] [Indexed: 12/03/2022]
Abstract
Perineuronal nets (PNNs) are specialised extracellular matrix structures which preferentially enwrap fast-spiking (FS) parvalbumin interneurons and have diverse roles in the cortex. PNN maturation coincides with closure of the critical period of cortical plasticity. We have previously demonstrated that BDNF accelerates interneuron development in a c-Jun-NH2-terminal kinase (JNK)–dependent manner, which may involve upstream thousand-and-one amino acid kinase 2 (TAOK2). Chondroitinase-ABC (ChABC) enzymatic digestion of PNNs reportedly reactivates ‘juvenile-like’ plasticity in the adult CNS. However, the mechanisms involved are unclear. We show that ChABC produces an immature molecular phenotype in cultured cortical neurons, corresponding to the phenotype prior to critical period closure. ChABC produced different patterns of PNN-related, GABAergic and immediate early (IE) gene expression than well-characterised modulators of mature plasticity and network activity (GABAA-R antagonist, bicuculline, and sodium-channel blocker, tetrodotoxin (TTX)). ChABC downregulated JNK activity, while this was upregulated by bicuculline. Bicuculline, but not ChABC, upregulated Bdnf expression and ERK activity. Furthermore, we found that BDNF upregulation of semaphorin-3A and IE genes was TAOK mediated. Our data suggest that ChABC heightens structural flexibility and network disinhibition, potentially contributing to ‘juvenile-like’ plasticity. The molecular phenotype appears to be distinct from heightened mature synaptic plasticity and could relate to JNK signalling. Finally, we highlight that BDNF regulation of plasticity and PNNs involves TAOK signalling.
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12
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Takashima M, Watanabe I, Miyanaga A, Eguchi T. Substrate specificity of Chondroitinase ABC I based on analyses of biochemical reactions and crystal structures in complex with disaccharides. Glycobiology 2021; 31:1571-1581. [PMID: 34392362 PMCID: PMC8684500 DOI: 10.1093/glycob/cwab086] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 08/05/2021] [Accepted: 08/05/2021] [Indexed: 11/28/2022] Open
Abstract
Chondroitinase ABC I (cABC-I) is the enzyme which cleaves the β-1,4 glycosidic linkage of chondroitin sulfate (CS) by β-elimination. To elucidate more accurately the substrate specificity of cABC-I, we evaluated the kinetic parameters of cABC-I and its reactivity with CS isomers displaying less structural heterogeneity as substrates, e.g., approximately 90 percent of disaccharide units in Chondroitin sulfate A (CSA) or Chondroitin sulfate C (CSC) is D-glucuronic acid and 4-O-sulfated N-acetyl galactosamine (GalNAc) (A-unit) or D-glucuronic acid and 6-O-sulfated GalNAc (C-unit), respectively. cABC-I showed the highest reactivity to CSA and CSC among all CS isomers, and the kcat/Km of cABC-I was higher for CSA than for CSC. Next, we determined the crystal structures of cABC-I in complex with CS disaccharides, and analyzed the crystallographic data in combination with molecular docking data. Arg500 interacts with 4-O-sulfated and 6-O-sulfated GalNAc residues. The distance between Arg500 and the 4-O-sulfate group was 0.8 Å shorter than that between Arg500 and the 6-O-sulfated group. Moreover, it is likely that the 6-O-sulfated group is electrostatically repulsed by the nearby Asp490. Thus, we demonstrated that cABC-I has the highest affinity for the CSA richest in 4-O-sulfated GalNAc residues among all CS isomers. Recently, cABC-I was used to treat lumbar disc herniation. The results provide useful information to understand the mechanism of the pharmacological action of cABC-I.
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Affiliation(s)
- Makoto Takashima
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8551, Japan
| | - Ippei Watanabe
- Medical Affairs, Seikagaku Corporation, 1-6-1 Marunouchi, Chiyoda-ku, Tokyo 100-0005, Japan
| | - Akimasa Miyanaga
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8551, Japan
| | - Tadashi Eguchi
- Department of Chemistry, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8551, Japan
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13
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Identification and Biochemical Characterization of a Surfactant-Tolerant Chondroitinase VhChlABC from Vibrio hyugaensis LWW-1. Mar Drugs 2021; 19:md19070399. [PMID: 34356824 PMCID: PMC8306027 DOI: 10.3390/md19070399] [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: 06/17/2021] [Revised: 07/13/2021] [Accepted: 07/16/2021] [Indexed: 11/16/2022] Open
Abstract
Chondroitinases, catalyzing the degradation of chondroitin sulfate (CS) into oligosaccharides, not only play a crucial role in understanding the structure and function of CS, but also have been reported as a potential candidate drug for the treatment of high CS-related diseases. Here, a marine bacterium Vibrio hyugaensis LWW-1 was isolated, and its genome was sequenced and annotated. A chondroitinase, VhChlABC, was found to belong to the second subfamily of polysaccharide lyase (PL) family 8. VhChlABC was recombinant expressed and characterized. It could specifically degrade CS-A, CS-B, and CS-C, and reached the maximum activity at pH 7.0 and 40 °C in the presence of 0.25 M NaCl. VhChlABC showed high stability within 8 h under 37 °C and within 2 h under 40 °C. VhChlABC was stable in a wide range of pH (5.0~10.6) at 4 °C. Unlike most chondroitinases, VhChlABC showed high surfactant tolerance, which might provide a good tool for removing extracellular CS proteoglycans (CSPGs) of lung cancer under the stress of pulmonary surfactant. VhChlABC completely degraded CS to disaccharide by the exolytic mode. This research expanded the research and application system of chondroitinases.
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14
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Hlavac N, Seroski DT, Agrawal NK, Astrab L, Liu R, Hudalla GA, Schmidt CE. Chondroitinase ABC/galectin-3 fusion proteins with hyaluronan-based hydrogels stabilize enzyme and provide targeted enzyme activity for neural applications. J Neural Eng 2021; 18. [PMID: 34082409 DOI: 10.1088/1741-2552/ac07bf] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 06/03/2021] [Indexed: 12/22/2022]
Abstract
Objective. Chondroitinase ABC (ChABC) has emerged as a promising therapeutic agent for central nervous system regeneration. Despite multiple beneficial outcomes for regeneration, translation of this enzyme is challenged by poor pharmacokinetics, localization, and stability.Approach. This study explored the function andin vitroapplication of engineered ChABC fused to galectin-3 (Gal3). Two previously developed ChABC-Gal3 oligomers (monomeric and trimeric) were evaluated for functionality and kinetics, then applied to anin vitrocellular outgrowth model using dorsal root ganglia (DRGs). The fusions were combined with two formulations of hyaluronan (HA)-based scaffolds to determine the extent of active enzyme release compared to wild type (WT) ChABC.Main Results. Monomeric and trimeric ChABC-Gal3 maintained digestive capabilities with kinetic properties that were substrate-dependent for chondroitin sulfates A, B, and C. The fusions had longer half-lives at 37 °C on the order of seven fold for monomer and twelve fold for trimer compared to WT. Both fusions were also effective at restoring DRG outgrowthin vitro. To create a combination approach, two triple-component hydrogels containing modified HA were formulated to match the mechanical properties of native spinal cord tissue and to support astrocyte viability (>80%) and adhesion. The hydrogels included collagen-I and laminin mixed with either 5 mg ml-1of glycidyl methacrylate HA or 3 mg ml-1Hystem. When combined with scaffolds, ChABC-Gal3 release time was lengthened compared to WT. Both fusions had measurable enzymatic activity for at least 10 d when incorporated in gels, compared to WT that lost activity after 1 d. These longer term release products from gels maintained adequate function to promote DRG outgrowth.Significance. Results of this study demonstrated cohesive benefits of two stabilized ChABC-Gal3 oligomers in combination with HA-based scaffolds for neural applications. Significant improvements to ChABC stability and release were achieved, meriting future studies of ChABC-Gal3/hydrogel combinations to target neural regeneration.
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Affiliation(s)
- Nora Hlavac
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, United States of America
| | - Dillon T Seroski
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, United States of America
| | - Nikunj K Agrawal
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, United States of America
| | - Leilani Astrab
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, United States of America
| | - Renjie Liu
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, United States of America
| | - Gregory A Hudalla
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, United States of America
| | - Christine E Schmidt
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, United States of America
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15
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Warren PM, Fawcett JW, Kwok JCF. Substrate Specificity and Biochemical Characteristics of an Engineered Mammalian Chondroitinase ABC. ACS OMEGA 2021; 6:11223-11230. [PMID: 34056277 PMCID: PMC8153898 DOI: 10.1021/acsomega.0c06262] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/24/2020] [Accepted: 03/30/2021] [Indexed: 06/12/2023]
Abstract
Chondroitin sulfate proteoglycans inhibit regeneration, neuroprotection, and plasticity following spinal cord injury. The development of a second-generation chondroitinase ABC enzyme, capable of being secreted from mammalian cells (mChABC), has facilitated the functional recovery of animals following severe spinal trauma. The genetically modified enzyme has been shown to efficiently break down the inhibitory extracellular matrix surrounding cells at the site of injury, while facilitating cellular integration and axonal growth. However, the activity profile of the enzyme in relation to the original bacterial chondroitinase (bChABC) has not been determined. Here, we characterize the activity profile of mChABC and compare it to bChABC, both enzymes having been maintained under physiologically relevant conditions for the duration of the experiment. We show that this genetically modified enzyme can be secreted reliably and robustly in high yields from a mammalian cell line. The modifications made to the cDNA of the enzyme have not altered the functional activity of mChABC compared to bChABC, ensuring that it has optimal activity on chondroitin sulfate-A, with an optimal pH at 8.0 and temperature at 37 °C. However, mChABC shows superior thermostability compared to bChABC, ensuring that the recombinant enzyme operates with enhanced activity over a variety of physiologically relevant substrates and temperatures compared to the widely used bacterial alternative without substantially altering its kinetic output. The determination that mChABC can function with greater robustness under physiological conditions than bChABC is an important step in the further development of this auspicious treatment strategy toward a clinical application.
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Affiliation(s)
- Philippa M. Warren
- Department
of Clinical Neurosciences, John van Geest Centre for Brain Repair, University of Cambridge, Cambridge CB2 0PY, U.K.
- Wolfson
Centre for Age Related Diseases, Institute of Psychiatry, Psychology
and Neuroscience, King’s College
London, Guy’s
Campus, London Bridge, London SE1 1UL, U.K.
- Department
of Physiology, Development and Neuroscience, University of Cambridge, Cambridge CB2 0PY, U.K.
| | - James W. Fawcett
- Department
of Clinical Neurosciences, John van Geest Centre for Brain Repair, University of Cambridge, Cambridge CB2 0PY, U.K.
- Centre
for Reconstructive Neuroscience, Institute of Experimental Medicine, Czech Academy of Sciences, Videnska 1083, 14220 Prague 4, Czech Republic
| | - Jessica C. F. Kwok
- Department
of Clinical Neurosciences, John van Geest Centre for Brain Repair, University of Cambridge, Cambridge CB2 0PY, U.K.
- Centre
for Reconstructive Neuroscience, Institute of Experimental Medicine, Czech Academy of Sciences, Videnska 1083, 14220 Prague 4, Czech Republic
- School
of Biomedical Sciences, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, U.K.
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16
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Wang H, Zhang L, Wang Y, Li J, Du G, Kang Z. Engineering a thermostable chondroitinase for production of specifically distributed low-molecular-weight chondroitin sulfate. Biotechnol J 2021; 16:e2000321. [PMID: 33350041 DOI: 10.1002/biot.202000321] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Revised: 12/13/2020] [Accepted: 12/17/2020] [Indexed: 12/17/2022]
Abstract
Chondroitinase ABC I (csABC I) has attracted intensive attention because of its great potential in heparin refining and the enzymatic preparation of low-molecular-weight chondroitin sulfate (LMW-CS). However, low thermal resistance (<30℃) restricts its applications. Herein, structure-guided and sequence-assisted combinatorial engineering approaches were applied to improve the thermal resistance of Proteus vulgaris csABC I. By integrating the deletion of the flexible fragment R166-L170 at the N-terminal domain and the mutation of E694P at the C-terminal domain, variant NΔ5/E694P exhibited 247-fold improvement of its half-life at 37℃ and a 2.3-fold increase in the specific activity. Through batch fermentation in a 3-L fermenter, the expression of variant NΔ5/E694P in an Escherichia coli host reached 1.7 g L-1 with the activity of 1.0 × 105 U L-1 . Finally, the enzymatic approach for the preparation of LMW-CS was established. By modulating enzyme concentration and controlling depolymerization time, specifically distributed LMW-CS (7000, 3400, and 1900 Da) with low polydispersity was produced, demonstrating the applicability of these processes for the industrial production of LMW-CS in a more environmentally friendly way.
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Affiliation(s)
- Hao Wang
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,The Science Center for Future Foods, Jiangnan University, Wuxi, China
| | - Lin Zhang
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,The Science Center for Future Foods, Jiangnan University, Wuxi, China
| | - Yang Wang
- The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,The Science Center for Future Foods, Jiangnan University, Wuxi, China
| | - Jianghua Li
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,The Science Center for Future Foods, Jiangnan University, Wuxi, China
| | - Guocheng Du
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,The Science Center for Future Foods, Jiangnan University, Wuxi, China
| | - Zhen Kang
- The Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,The Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi, China.,The Science Center for Future Foods, Jiangnan University, Wuxi, China
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17
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Song G, Sun J, Zhao M, Wang Z, Gong Q, Yu W. Cloning and characterization of two chondroitin sulfate ABC lyases from Edwardsiella tarda LMG2793. Enzyme Microb Technol 2020; 143:109701. [PMID: 33375969 DOI: 10.1016/j.enzmictec.2020.109701] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Revised: 10/16/2020] [Accepted: 11/03/2020] [Indexed: 11/29/2022]
Abstract
Chondroitinase ABC can be used to prepare chondroitin sulfate (CS) oligosaccharides efficiently and environmentally. It also promotes nerve recovery through enzymatic degradation of glycosaminoglycan chains in damaged nerve tissue. In this study, two new chondroitin sulfate ABC lyases were expressed and characterized from Edwardsiella tarda LMG2793, with molecular weight of 116.8 kDa and 115.9 kDa, respectively. Two lyases ChABC I and ChABC II belonged to the polysaccharide lyase (PL) family 8. ChABC I and ChABC II showed enzyme activity towards chondroitin sulfate A (CS-A), CS-B, CS-C and CS-D, but had no activity towards hyaluronan (HA). The optimal temperature for ChABC I to exhibit the highest activity against CS-A was 40 °C and the optimal pH was 7.0. ChABC II showed the highest activity to CS-A at optimal temperature of 40 °C and pH of 9.0. ChABC I and ChABC II were stable at 37 °C and remained about 90 % of activity after incubation at 37 °C for 3 h. Many metal ions had no effect on the activity of ChABC I and ChABC II. These properties were beneficial to their further basic research and application. ChABC I was an endo-type enzyme while ChABC II was an exo-type enzyme. A group of amino acids were selected for further study by evaluating the sequence homology with other CS degradation lyases. Mutagenesis studies speculated that the catalytic residues in ChABC I were His522, Tyr529 and Arg581. The catalytic residues of ChABC II were His498, Tyr505 and Arg558. This work will contribute to the structural and functional characterization of biomedically relevant CS and promote the application of CS lyase in further basic research and therapeutics.
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Affiliation(s)
- Guanrui Song
- School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao, 266003, PR China; Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Qingdao, 266237, PR China; Provincial Key Laboratory of Glycoscience and Glycotechnology, Ocean University of China, 5 Yushan Road, Qingdao, 266003, PR China
| | - Junhao Sun
- School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao, 266003, PR China; Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Qingdao, 266237, PR China; Provincial Key Laboratory of Glycoscience and Glycotechnology, Ocean University of China, 5 Yushan Road, Qingdao, 266003, PR China
| | - Mingliu Zhao
- School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao, 266003, PR China; Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Qingdao, 266237, PR China; Provincial Key Laboratory of Glycoscience and Glycotechnology, Ocean University of China, 5 Yushan Road, Qingdao, 266003, PR China
| | - Zheng Wang
- School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao, 266003, PR China; Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Qingdao, 266237, PR China; Provincial Key Laboratory of Glycoscience and Glycotechnology, Ocean University of China, 5 Yushan Road, Qingdao, 266003, PR China
| | - Qianhong Gong
- School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao, 266003, PR China; Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Qingdao, 266237, PR China; Provincial Key Laboratory of Glycoscience and Glycotechnology, Ocean University of China, 5 Yushan Road, Qingdao, 266003, PR China.
| | - Wengong Yu
- School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao, 266003, PR China; Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Qingdao, 266237, PR China; Provincial Key Laboratory of Glycoscience and Glycotechnology, Ocean University of China, 5 Yushan Road, Qingdao, 266003, PR China.
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18
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Zhang Q, Lu D, Wang S, Wei L, Wang W, Li F. Identification and biochemical characterization of a novel chondroitin sulfate/dermantan sulfate lyase from Photobacterium sp. Int J Biol Macromol 2020; 165:2314-2325. [PMID: 33132124 DOI: 10.1016/j.ijbiomac.2020.10.119] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 10/14/2020] [Accepted: 10/14/2020] [Indexed: 12/27/2022]
Abstract
Chondroitin sulfate (CS)/dermatan sulfate (DS) lyases play important roles in structural and functional studies of CS/DS. In this study, a novel CS/DS lyase (enCSase) was identified from the genome of the marine bacterium Photobacterium sp. QA16. This enzyme is easily heterologously expressed and purified as highly active form against various CS, DS and hyaluronic acid (HA). Under the optimal conditions, the specific activities of this enzyme towards CSA, CSC, CSD, CSE, DS and HA were 373, 474, 171, 172, 141 and 97 U/mg of proteins, respectively. As an endolytic enzyme, enCSase degrades HA to unsaturated hexa- and tetrasaccharides but CS/DS to unsaturated tetra- and disaccharides as the final products. Sequencing analysis showed that the structures of tetrasaccharides in the final products of CS variants were not unique but were highly variable, indicating the randomness of substrate degradation by this enzyme. Further studies showed that the smallest substrate of enCSase was octasaccharide for HA but hexasaccharide for CS/DS, which could explain why this enzyme cannot degrade HA hexa- and tetrasaccharides and CS/DS tetrasaccharides further. It is believed that enCSase may be a very useful tool for structural and functional studies and related applications of CS/DS and HA.
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Affiliation(s)
- Qingdong Zhang
- National Glycoengineering Research Center and Shandong Key Laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, 72 Binhai Rd, Qingdao 266200, China
| | - Danrong Lu
- National Glycoengineering Research Center and Shandong Key Laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, 72 Binhai Rd, Qingdao 266200, China; School of Life Science and Technology, Weifang Medical University, 7166 Baotong West Street, Weifang 261053, China
| | - Shumin Wang
- School of Life Science, Shandong First Medical University (Shandong Academy of Medical Sciences), 619 Changcheng Road, Taian 271016, China
| | - Lin Wei
- National Glycoengineering Research Center and Shandong Key Laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, 72 Binhai Rd, Qingdao 266200, China
| | - Wenshuang Wang
- National Glycoengineering Research Center and Shandong Key Laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, 72 Binhai Rd, Qingdao 266200, China
| | - Fuchuan Li
- National Glycoengineering Research Center and Shandong Key Laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, 72 Binhai Rd, Qingdao 266200, China.
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19
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Zhang Z, Su H, Wang X, Tang L, Hu J, Yu W, Han F. Cloning and characterization of a novel chondroitinase ABC categorized into a new subfamily of polysaccharide lyase family 8. Int J Biol Macromol 2020; 164:3762-3770. [PMID: 32871123 DOI: 10.1016/j.ijbiomac.2020.08.210] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 08/27/2020] [Accepted: 08/27/2020] [Indexed: 12/24/2022]
Abstract
Chondroitinases degrade chondroitin sulfate (CS) into oligosaccharides, of which the biological activities have vital roles in various fields. Some chondroitinases in polysaccharide lyase family 8 (PL8) have been classified into four subfamilies (PL8_1, PL8_2, PL8_3, and PL8_4) based on their sequence similarity and substrate specificities. In this study, a gene, vpa_0049, was cloned from marine bacterium Vibrio sp. QY108. The encoded protein, Vpa_0049, did not belong to the four existing subfamilies in PL8 based on phylogenetic analysis. Vpa_0049 could degrade various glycosaminoglycans (CS-A, CS-B, CS-C, CS-D, and HA) into unsaturated disaccharides in an endolytic manner, which was different from PL8 lyases of four existing subfamilies. The maximum activity of Vpa_0049 on different glycosaminoglycan substrates appeared at 30-37 °C and pH 7.0-8.0 in the presence of NaCl. Vpa_0049 showed approximately 50% of maximum activity towards CS-B and HA at 0 °C. It was stable in alkaline conditions (pH 8.0-10.6) and 0-30 °C. Our study provides a new broad-substrate chondroitinase and presents an in-depth understanding of PL8.
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Affiliation(s)
- Zhelun Zhang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, 5 Yushan Road, Qingdao 266003, PR China; Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, 5 Yushan Road, Qingdao 266003, PR China; School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China; Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Qingdao 266237, PR China
| | - Hang Su
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, 5 Yushan Road, Qingdao 266003, PR China; Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, 5 Yushan Road, Qingdao 266003, PR China; School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China; Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Qingdao 266237, PR China
| | - Xiaoyi Wang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, 5 Yushan Road, Qingdao 266003, PR China; Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, 5 Yushan Road, Qingdao 266003, PR China; School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China; Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Qingdao 266237, PR China
| | - Luyao Tang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, 5 Yushan Road, Qingdao 266003, PR China; Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, 5 Yushan Road, Qingdao 266003, PR China; School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China; Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Qingdao 266237, PR China
| | - Jingyang Hu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, 5 Yushan Road, Qingdao 266003, PR China; Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, 5 Yushan Road, Qingdao 266003, PR China; School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China; Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Qingdao 266237, PR China
| | - Wengong Yu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, 5 Yushan Road, Qingdao 266003, PR China; Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, 5 Yushan Road, Qingdao 266003, PR China; School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China; Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Qingdao 266237, PR China
| | - Feng Han
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, 5 Yushan Road, Qingdao 266003, PR China; Shandong Provincial Key Laboratory of Glycoscience and Glycotechnology, 5 Yushan Road, Qingdao 266003, PR China; School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, PR China; Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Qingdao 266237, PR China..
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20
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Hettiaratchi MH, O’Meara MJ, O’Meara TR, Pickering AJ, Letko-Khait N, Shoichet MS. Reengineering biocatalysts: Computational redesign of chondroitinase ABC improves efficacy and stability. SCIENCE ADVANCES 2020; 6:eabc6378. [PMID: 32875119 PMCID: PMC7438101 DOI: 10.1126/sciadv.abc6378] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Accepted: 07/08/2020] [Indexed: 05/24/2023]
Abstract
Maintaining biocatalyst stability and activity is a critical challenge. Chondroitinase ABC (ChABC) has shown promise in central nervous system (CNS) regeneration, yet its therapeutic utility is severely limited by instability. We computationally reengineered ChABC by introducing 37, 55, and 92 amino acid changes using consensus design and forcefield-based optimization. All mutants were more stable than wild-type ChABC with increased aggregation temperatures between 4° and 8°C. Only ChABC with 37 mutations (ChABC-37) was more active and had a 6.5 times greater half-life than wild-type ChABC, increasing to 106 hours (4.4 days) from only 16.8 hours. ChABC-37, expressed as a fusion protein with Src homology 3 (ChABC-37-SH3), was active for 7 days when released from a hydrogel modified with SH3-binding peptides. This study demonstrates the broad opportunity to improve biocatalysts through computational engineering and sets the stage for future testing of this substantially improved protein in the treatment of debilitating CNS injuries.
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Affiliation(s)
- Marian H. Hettiaratchi
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto, ON M5S 3E5, Canada
| | - Matthew J. O’Meara
- Department of Computational Medicine and Bioinformatics, University of Michigan, 100 Washtenaw Ave. #2017, Ann Arbor, MI 48109, USA
| | - Teresa R. O’Meara
- Department of Microbiology and Immunology, University of Michigan, 1150 W. Medical Center Dr., Ann Arbor, MI 48109 USA
| | - Andrew J. Pickering
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto, ON M5S 3E5, Canada
| | - Nitzan Letko-Khait
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto, ON M5S 3E5, Canada
| | - Molly S. Shoichet
- Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College Street, Toronto, ON M5S 3E5, Canada
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, 164 College St., Toronto, ON M5S 3G9, Canada
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, ON M5S 3H6, Canada
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21
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Spliid CB, Toledo AG, Salanti A, Esko JD, Clausen TM. Beware, commercial chondroitinases vary in activity and substrate specificity. Glycobiology 2020; 31:103-115. [PMID: 32573715 DOI: 10.1093/glycob/cwaa056] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 06/05/2020] [Accepted: 06/06/2020] [Indexed: 11/14/2022] Open
Abstract
Chondroitin sulfate (CS)and dermatan sulfate (DS) are negatively charged polysaccharides found abundantly in animal tissue and have been extensively described to play key roles in health and disease. The most common method to analyze their structure is by digestion into disaccharides with bacterial chondroitinases, followed by chromatography and/or mass spectrometry. While studying the structure of oncofetal CS, we noted a large variation in the activity and specificity of commercially available chondroitinases. Here studied the kinetics of the enzymes and used high-performance liquid chromatography-mass spectrometry to determine the di- and oligosaccharide products resulting from the digestion of commercially available bovine CS A, shark CS C and porcine DS, focusing on chondroitinases ABC, AC and B from different vendors. Application of a standardized assay setup demonstrated large variations in the enzyme-specific activity compared to the values provided by vendors, large variation in enzyme specific activity of similar enzymes from different vendors and differences in the extent of cleavage of the substrates and the generated products. The high variability of different chondroitinases highlights the importance of testing enzyme activity and monitoring product formation in assessing the content and composition of chondroitin and DSs in cells and tissues.
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Affiliation(s)
- Charlotte B Spliid
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA 92093, USA.,Centre for Medical Parasitology at Department for Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen and Department of Infectious Disease, Copenhagen University Hospital, 2200 Copenhagen, Denmark
| | - Alejandro Gomez Toledo
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA 92093, USA
| | - Ali Salanti
- Centre for Medical Parasitology at Department for Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen and Department of Infectious Disease, Copenhagen University Hospital, 2200 Copenhagen, Denmark
| | - Jeffrey D Esko
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA 92093, USA
| | - Thomas Mandel Clausen
- Department of Cellular and Molecular Medicine, University of California San Diego, La Jolla, CA 92093, USA.,Centre for Medical Parasitology at Department for Immunology and Microbiology, Faculty of Health and Medical Sciences, University of Copenhagen and Department of Infectious Disease, Copenhagen University Hospital, 2200 Copenhagen, Denmark
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22
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Schommer NN, Nguyen J, Yung BS, Schultheis K, Muthumani K, Weiner DB, Humeau L, Broderick KE, Smith TRF. Active Immunoprophylaxis and Vaccine Augmentations Mediated by a Novel Plasmid DNA Formulation. Hum Gene Ther 2020; 30:523-533. [PMID: 30860399 PMCID: PMC6479233 DOI: 10.1089/hum.2018.241] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Plasmid DNA (pDNA) gene delivery is a highly versatile technology that has the potential to address a multitude of unmet medical needs. Advances in pDNA delivery to host tissue with the employment of in vivo electroporation (EP) have led to significantly enhanced gene expression and the recent demonstration of clinical efficacy with the platform. Building upon this platform, this study reports that enzyme-mediated modification of the muscle tissue extracellular matrix structure at the site of pDNA delivery operates in a synergistic manner with EP to enhance both local and systemic gene expression further. Specifically, administration of chondroitinase ABC (Cho ABC) to the site of intramuscular delivery of pDNA led to transient disruption of chondroitin sulfate scaffolding barrier, permitting enhanced gene distribution and expression across the tissue. The employment of Cho ABC in combination with CELLECTRA® intramuscular EP resulted in increased gene expression by 5.5-fold in mice and 17.98-fold in rabbits. The study demonstrates how this protocol can be universally applied to an active prophylaxis platform to increase the in vivo production of functional immunoglobulin G, and to DNA vaccine protocols to permit drug dose sparing. The data indicate the Cho ABC formulation to be of significant value upon combination with EP to drive enhanced gene expression levels in pDNA delivery protocols.
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Affiliation(s)
- Nina N Schommer
- 1 Inovio Pharmaceuticals, Inc., Plymouth Meeting, Pennsylvania
| | - Jacklyn Nguyen
- 1 Inovio Pharmaceuticals, Inc., Plymouth Meeting, Pennsylvania
| | - Bryan S Yung
- 1 Inovio Pharmaceuticals, Inc., Plymouth Meeting, Pennsylvania
| | | | - Kar Muthumani
- 2 The Wistar Institute of Anatomy and Biology, Philadelphia, Pennsylvania
| | - David B Weiner
- 2 The Wistar Institute of Anatomy and Biology, Philadelphia, Pennsylvania
| | - Laurent Humeau
- 1 Inovio Pharmaceuticals, Inc., Plymouth Meeting, Pennsylvania
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23
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Griffin JM, Bradke F. Therapeutic repair for spinal cord injury: combinatory approaches to address a multifaceted problem. EMBO Mol Med 2020; 12:e11505. [PMID: 32090481 PMCID: PMC7059014 DOI: 10.15252/emmm.201911505] [Citation(s) in RCA: 110] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 01/07/2020] [Accepted: 01/31/2020] [Indexed: 12/21/2022] Open
Abstract
The recent years saw the advent of promising preclinical strategies that combat the devastating effects of a spinal cord injury (SCI) that are progressing towards clinical trials. However, individually, these treatments produce only modest levels of recovery in animal models of SCI that could hamper their implementation into therapeutic strategies in spinal cord injured humans. Combinational strategies have demonstrated greater beneficial outcomes than their individual components alone by addressing multiple aspects of SCI pathology. Clinical trial designs in the future will eventually also need to align with this notion. The scenario will become increasingly complex as this happens and conversations between basic researchers and clinicians are required to ensure accurate study designs and functional readouts.
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Affiliation(s)
- Jarred M Griffin
- Laboratory for Axonal Growth and Regeneration, German Centre for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Frank Bradke
- Laboratory for Axonal Growth and Regeneration, German Centre for Neurodegenerative Diseases (DZNE), Bonn, Germany
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24
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Mouse Cytomegalovirus Differentially Exploits Cell Surface Glycosaminoglycans in a Cell Type-Dependent and MCK-2-Independent Manner. Viruses 2019; 12:v12010031. [PMID: 31892128 PMCID: PMC7019585 DOI: 10.3390/v12010031] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 12/17/2019] [Accepted: 12/24/2019] [Indexed: 12/12/2022] Open
Abstract
Many viruses initiate interaction with target cells by binding to cell surface glycosaminoglycans (GAGs). Heparan sulfate (HS) appears to be particularly important in fibroblasts, epithelial cells and endothelial cells, where it represents the dominant GAG. How GAGs influence viral infectivity in HS-poor target cells such as macrophages has not been clearly defined. Here, we show that mouse cytomegalovirus (MCMV) targets HS in susceptible fibroblasts and cultured salivary gland acinar cells (SGACs), but not in macrophage cell lines and primary bone marrow-derived macrophages, where chondroitin sulfate was the dominant virus-binding GAG. MCK-2, an MCMV-encoded GAG-binding chemokine that promotes infection of macrophages as part of a gH/gL/MCK-2 entry complex, was dispensable for MCMV attachment to the cell surface and for direct infection of SGACs. Thus, MCMV tropism for target cells is markedly influenced by differential GAG expression, suggesting that the specificity of anti-GAG peptides now under development as HCMV therapeutics may need to be broadened for effective application as anti-viral agents.
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25
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Sun J, Han X, Song G, Gong Q, Yu W. Cloning, Expression, and Characterization of a New Glycosaminoglycan Lyase from Microbacterium sp. H14. Mar Drugs 2019; 17:md17120681. [PMID: 31810166 PMCID: PMC6950261 DOI: 10.3390/md17120681] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 11/27/2019] [Accepted: 11/28/2019] [Indexed: 12/19/2022] Open
Abstract
Glycosaminoglycan (GAG) lyase is an effective tool for the structural and functional studies of glycosaminoglycans and preparation of functional oligosaccharides. A new GAG lyase from Microbacterium sp. H14 was cloned, expressed, purified, and characterized, with a molecular weight of approximately 85.9 kDa. The deduced lyase HCLaseM belonged to the polysaccharide lyase (PL) family 8. Based on the phylogenetic tree, HCLaseM could not be classified into the existing three subfamilies of this family. HCLaseM showed almost the same enzyme activity towards hyaluronan (HA), chondroitin sulfate A (CS-A), CS-B, CS-C, and CS-D, which was different from reported GAG lyases. HCLaseM exhibited the highest activities to both HA and CS-A at its optimal temperature (35 °C) and pH (pH 7.0). HCLaseM was stable in the range of pH 5.0–8.0 and temperature below 30 °C. The enzyme activity was independent of divalent metal ions and was not obviously affected by most metal ions. HCLaseM is an endo-type enzyme yielding unsaturated disaccharides as the end products. The facilitated diffusion effect of HCLaseM is dose-dependent in animal experiments. These properties make it a candidate for further basic research and application.
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Affiliation(s)
- Junhao Sun
- School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (J.S.); (G.S.)
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Qingdao 266237, China
- Provincial Key Laboratory of Glycoscience and Glycotechnology, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
| | - Xu Han
- School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (J.S.); (G.S.)
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Qingdao 266237, China
- Provincial Key Laboratory of Glycoscience and Glycotechnology, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
| | - Guanrui Song
- School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (J.S.); (G.S.)
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Qingdao 266237, China
- Provincial Key Laboratory of Glycoscience and Glycotechnology, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
| | - Qianhong Gong
- School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (J.S.); (G.S.)
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Qingdao 266237, China
- Provincial Key Laboratory of Glycoscience and Glycotechnology, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
- Correspondence: (Q.G.); (W.Y.); Tel.: +86-532-8203-2067 (Q.G.); +86-532-8203-1680 (W.Y.)
| | - Wengong Yu
- School of Medicine and Pharmacy, Ocean University of China, 5 Yushan Road, Qingdao 266003, China; (J.S.); (G.S.)
- Laboratory for Marine Drugs and Bioproducts, Qingdao National Laboratory for Marine Science and Technology, 1 Wenhai Road, Qingdao 266237, China
- Provincial Key Laboratory of Glycoscience and Glycotechnology, Ocean University of China, 5 Yushan Road, Qingdao 266003, China
- Correspondence: (Q.G.); (W.Y.); Tel.: +86-532-8203-2067 (Q.G.); +86-532-8203-1680 (W.Y.)
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26
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Recent advances in the therapeutic uses of chondroitinase ABC. Exp Neurol 2019; 321:113032. [PMID: 31398353 DOI: 10.1016/j.expneurol.2019.113032] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 07/19/2019] [Accepted: 08/03/2019] [Indexed: 12/18/2022]
Abstract
Many studies, using pre-clinical models of SCI, have demonstrated the efficacy of chondroitinase ABC as a treatment for spinal cord injury and this has been confirmed in laboratories worldwide and in several animal models. The aim of this review is report the current state of research in the field and to compare the relative efficacies of these new interventions to improve outcomes in both acute and chronic models of SCI. We also report new methods of chondroitinase delivery and the outcomes of two clinical trials using the enzyme to treat spinal cord injury in dogs and disc herniation in human patients. Recent studies have assessed the outcomes of combining chondroitinase with other strategies known to promote recovery following spinal cord injury and new approaches. Evidence is emerging that one of the most powerful combinations is that of chondroitinase with cell transplants. The particular benefits of each of the different cell types used for these transplant experiments are discussed. Combining chondroitinase with rehabilitation also improves outcomes. Gene therapy is an efficient method of enzyme delivery to the injured spinal cord and circumvents the issue of the enzyme's thermo-instability. Other methods of delivery, such as via nanoparticles or synthetic scaffolds, have shown promise; however, the outcomes from these experiments suggest that these methods of delivery require further optimization to achieve similar levels of efficacy to that obtained by a gene therapy approach. Pre-clinical models have also shown chondroitinase is efficacious in the treatment of other conditions, such as peripheral nerve injury, stroke, coronary reperfusion, Parkinson's disease and certain types of cancer. The wide range of conditions where the benefits of chondroitinase treatment have been demonstrated reflects the complex roles that chondroitin sulphate proteoglycans (its substrate) play in health and disease and warrants the enzyme's further development as a therapy.
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27
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Wang S, Guan J, Zhang Q, Chen X, Li F. Identification and Signature Sequences of Bacterial Δ 4,5Hexuronate-2- O-Sulfatases. Front Microbiol 2019; 10:704. [PMID: 31024490 PMCID: PMC6460246 DOI: 10.3389/fmicb.2019.00704] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Accepted: 03/20/2019] [Indexed: 11/13/2022] Open
Abstract
Glycosaminoglycan (GAG) sulfatases, which catalyze the hydrolysis of sulfate esters from GAGs, belong to a large and conserved sulfatase family. Bacterial GAG sulfatases are essential in the process of sulfur cycling and are useful for the structural analysis of GAGs. Only a few GAG-specific sulfatases have been studied in detail and reported to date. Herein, the GAG-degrading Photobacterium sp. FC615 was isolated from marine sediment, and a novel Δ4,5hexuronate-2-O-sulfatase (PB2SF) was identified from this bacterium. PB2SF specifically removed 2-O-sulfate from the unsaturated hexuronate residue located at the non-reducing end of GAG oligosaccharides produced by GAG lyases. A structural model of PB2SF was constructed through a homology-modeling method. Six conserved amino acids around the active site were chosen for further analysis using site-directed mutagenesis. N113A, K141A, K141H, H143A, H143K, H205A, and H205K mutants exhibited only feeble activity, while the H310A, H310K, and D52A mutants were totally inactive, indicating that these conserved residues, particularly Asp52 and His310, were essential in the catalytic mechanism. Furthermore, bioinformatic analysis revealed that GAG sulfatases with specific degradative properties clustered together in the neighbor-joining phylogenetic tree. Based on this finding, 60 Δ4,5hexuronate-2-O-sulfatases were predicted in the NCBI protein database, and one with relatively low identity to PB2SF was characterized to confirm our prediction. Moreover, the signature sequences of bacterial Δ4,5hexuronate-2-O-sulfatases were identified. With the reported signature motifs, the sulfatase sequence of the Δ4,5hexuronate-2-O-sulfatase family could be simply identified before cloning. Taken together, the results of this study should aid in the identification and further application of novel GAG sulfatases.
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Affiliation(s)
- Shumin Wang
- National Glycoengineering Research Center and Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, Qingdao, China
| | - Jingwen Guan
- National Glycoengineering Research Center and Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, Qingdao, China
| | - Qingdong Zhang
- National Glycoengineering Research Center and Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, Qingdao, China
| | - Xiangxue Chen
- Dongying Tiandong Pharmaceutical, Co., Ltd., Dongying, China
| | - Fuchuan Li
- National Glycoengineering Research Center and Shandong Provincial Key Laboratory of Carbohydrate Chemistry and Glycobiology, Shandong University, Qingdao, China
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28
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Omidi-Ardali H, Aminian M, Golestani A, Shahaboddin ME, Maleki M. N∆89 and C∆274 Truncated Enzymes of Chondroitinase ABC I Regain More Imperturbable Microenvironments Around Structural Components in Comparison to their Wild Type. Protein J 2019; 38:151-159. [DOI: 10.1007/s10930-019-09821-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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29
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Ndeh D, Gilbert HJ. Biochemistry of complex glycan depolymerisation by the human gut microbiota. FEMS Microbiol Rev 2018; 42:146-164. [PMID: 29325042 DOI: 10.1093/femsre/fuy002] [Citation(s) in RCA: 157] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Accepted: 01/06/2018] [Indexed: 12/21/2022] Open
Abstract
The human gut microbiota (HGM) makes an important contribution to health and disease. It is a complex microbial community of trillions of microbes with a majority of its members represented within two phyla, the Bacteroidetes and Firmicutes, although it also contains species of Actinobacteria and Proteobacteria. Reflecting its importance, the HGM is sometimes referred to as an 'organ' as it performs functions analogous to systemic tissues within the human host. The major nutrients available to the HGM are host and dietary complex carbohydrates. To utilise these nutrient sources, the HGM has developed elaborate, variable and sophisticated systems for the sensing, capture and utilisation of these glycans. Understanding nutrient acquisition by the HGM can thus provide mechanistic insights into the dynamics of this ecosystem, and how it impacts human health. Dietary nutrient sources include a wide variety of simple and complex plant and animal-derived glycans most of which are not degraded by enzymes in the digestive tract of the host. Here we review how various adaptive mechanisms that operate across the major phyla of the HGM contribute to glycan utilisation, focusing on the most complex carbohydrates presented to this ecosystem.
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Affiliation(s)
- Didier Ndeh
- Institute for Cell and Molecular Biosciences, The Medical School, Newcastle University, Framlington Place, Newcastle upon Tyne NE2 4HH, UK
| | - Harry J Gilbert
- Institute for Cell and Molecular Biosciences, The Medical School, Newcastle University, Framlington Place, Newcastle upon Tyne NE2 4HH, UK
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30
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Li Y, Zhou Z, Chen Z. High-level production of ChSase ABC I by co-expressing molecular chaperones in Escherichia coli. Int J Biol Macromol 2018; 119:779-784. [DOI: 10.1016/j.ijbiomac.2018.08.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2017] [Revised: 08/01/2018] [Accepted: 08/02/2018] [Indexed: 12/18/2022]
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31
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Investigating the role of loop 131–140 in activity and thermal stability of chondroitinase ABC I. Int J Biol Macromol 2018; 116:811-816. [DOI: 10.1016/j.ijbiomac.2018.05.094] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2017] [Revised: 05/14/2018] [Accepted: 05/15/2018] [Indexed: 11/22/2022]
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32
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Establishment of Aromatic Pairs at the Surface of Chondroitinase ABC I: the Effect on Activity and Stability. Appl Biochem Biotechnol 2018; 186:358-370. [DOI: 10.1007/s12010-018-2741-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2018] [Accepted: 03/18/2018] [Indexed: 10/17/2022]
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33
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Improving the stability of chondroitinase ABC I via interaction with gold nanorods. Int J Biol Macromol 2018; 107:297-304. [DOI: 10.1016/j.ijbiomac.2017.08.167] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Revised: 08/29/2017] [Accepted: 08/30/2017] [Indexed: 01/19/2023]
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34
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Maleki M, Khajeh K, Amanlou M, Golestani A. Role of His-His interaction in Ser 474-His 475-Tyr 476 sequence of chondroitinase ABC I in the enzyme activity and stability. Int J Biol Macromol 2017; 109:941-949. [PMID: 29146558 DOI: 10.1016/j.ijbiomac.2017.11.075] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2017] [Revised: 11/10/2017] [Accepted: 11/12/2017] [Indexed: 12/11/2022]
Abstract
Despite clinical importance of chondroitinase ABC I, its application has been limited due to thermal instability as reported in the literature. There are various approaches to improve thermal stability of enzymes, among them, His-His interactions are believed generally as an effective means. In the present study and for preparing a His-His interaction, various mutations in the sequence of Ser474-His475-Tyr476 at catalytic domain of the enzyme were performed using site directed mutagenesis method. The effect of these mutations on activity, stability and structural features of cABC I was assessed. The study showed that establishment of His475-His476 pair in cABC I, did not improve thermal stability of the enzyme and inactivated it. The study also revealed the existence a hydrogen bond network in the central domain of the enzyme with a specific role for tyrosine 476. In this network, replacement of His475 with Ala and Try476 with His and Ala, deactivated and destabilized the enzyme; confirming their importance in the enzyme catalysis and stability. Also, it was found that Tyr476 has some important role in substrate binding, an issue which should be more investigated.
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Affiliation(s)
- Monireh Maleki
- Department of Clinical Biochemistry, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Khosro Khajeh
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Massoud Amanlou
- Faculty of Pharmacy and Pharmaceutical Sciences Research Center, Department of Medicinal Chemistry, Tehran University of Medical Sciences, Tehran, Iran
| | - Abolfazl Golestani
- Department of Clinical Biochemistry, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran.
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35
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Bagherieh M, Kheirollahi A, Shahaboddin ME, Khajeh K, Golestani A. Calcium and TNFα additively affect the chondroitinase ABC I activity. Int J Biol Macromol 2017; 103:1201-1206. [DOI: 10.1016/j.ijbiomac.2017.05.177] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/14/2017] [Revised: 05/15/2017] [Accepted: 05/30/2017] [Indexed: 12/28/2022]
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36
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Shahaboddin ME, Khajeh K, Maleki M, Golestani A. Improvement of activity and stability of Chondroitinase ABC I by introducing an aromatic cluster at the surface of protein. Enzyme Microb Technol 2017; 105:38-44. [DOI: 10.1016/j.enzmictec.2017.06.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2016] [Revised: 05/22/2017] [Accepted: 06/03/2017] [Indexed: 11/16/2022]
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37
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Zhu C, Zhang J, Zhang J, Jiang Y, Shen Z, Guan H, Jiang X. Purification and characterization of chondroitinase ABC from Acinetobacter sp. C26. Int J Biol Macromol 2017; 95:80-86. [DOI: 10.1016/j.ijbiomac.2016.10.044] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2016] [Revised: 09/09/2016] [Accepted: 10/15/2016] [Indexed: 10/20/2022]
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38
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Expression, purification and characterization of GAPDH-ChSase ABC I from Proteus vulgaris in Escherichia coli. Protein Expr Purif 2016; 128:36-41. [DOI: 10.1016/j.pep.2016.08.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2016] [Revised: 08/01/2016] [Accepted: 08/03/2016] [Indexed: 11/18/2022]
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39
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Improvement of expression level of polysaccharide lyases with new tag GAPDH in E. coli. J Biotechnol 2016; 236:159-65. [DOI: 10.1016/j.jbiotec.2016.08.016] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2016] [Revised: 08/18/2016] [Accepted: 08/24/2016] [Indexed: 11/22/2022]
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40
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Nazari-Robati M, Golestani A, Asadikaram G. Improvement of proteolytic and oxidative stability of Chondroitinase ABC I by cosolvents. Int J Biol Macromol 2016; 91:812-7. [PMID: 27311501 DOI: 10.1016/j.ijbiomac.2016.06.030] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Revised: 05/26/2016] [Accepted: 06/11/2016] [Indexed: 10/21/2022]
Abstract
Recently, utilization of the enzyme Chondroitinase ABC I (cABC I) has received considerable attention in treatment of spinal cord injury. cABC I removes chondroitin sulfate proteoglycans which are inhibitory to axon growth and enhances nerve regeneration. Therefore, determination of cABC I resistance to proteolysis and oxidation provides valuable information for optimizing its clinical application. In this work, proteolytic stability of cABC I to trypsin and chymotrypsin as well as its oxidative resistance to H2O2 was measured. Moreover, the effect of cosolvents glycerol, sorbitol and trehalose on cABC I proteolytic and oxidative stability was determined. The results indicated that cABC I is highly susceptible to proteolysis and oxidation. Comparison of proteolytic patterns demonstrated a high degree of similarity which confirmed the exposure of specific regions of cABC I to proteolysis. However, proteolytic degradation was significantly reduced in the presence of cosolvents. In addition, cosolvents decreased the rate of both cABC I proteolytic and oxidative inactivation. Notably, the degree of stabilization provided by these cosolvents varied greatly. These findings indicated the high potential of cosolvents in protein stabilization to proteolysis and oxidative inactivation.
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Affiliation(s)
- Mahdieh Nazari-Robati
- Department of Clinical Biochemistry, School of Medicine, Kerman University of Medical Sciences, Kerman, Iran.
| | - Abolfazl Golestani
- Department of Clinical Biochemistry, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - GholamReza Asadikaram
- Department of Clinical Biochemistry, School of Medicine, Kerman University of Medical Sciences, Kerman, Iran
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41
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Shamsi M, Shirdel SA, Jafarian V, Jafari SS, Khalifeh K, Golestani A. Optimization of conformational stability and catalytic efficiency in chondroitinase ABC Ι by protein engineering methods. Eng Life Sci 2016. [DOI: 10.1002/elsc.201600034] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Affiliation(s)
- Masoumeh Shamsi
- Department of Biology; Faculty of Sciences; University of Zanjan; Zanjan Iran
| | - S. Akram Shirdel
- Department of Biology; Faculty of Sciences; University of Zanjan; Zanjan Iran
| | - Vahab Jafarian
- Department of Biology; Faculty of Sciences; University of Zanjan; Zanjan Iran
| | | | - Khosrow Khalifeh
- Department of Biology; Faculty of Sciences; University of Zanjan; Zanjan Iran
| | - Abolfazl Golestani
- Department of Clinical Biochemistry; School of Medicine; Tehran University of Medical Sciences; Tehran Iran
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42
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Tedcastle A, Illingworth S, Brown A, Seymour LW, Fisher KD. Actin-resistant DNAse I Expression From Oncolytic Adenovirus Enadenotucirev Enhances Its Intratumoral Spread and Reduces Tumor Growth. Mol Ther 2016; 24:796-804. [PMID: 26708004 PMCID: PMC4886935 DOI: 10.1038/mt.2015.233] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Accepted: 12/17/2015] [Indexed: 12/27/2022] Open
Abstract
Spread of oncolytic viruses through tumor tissue is essential to effective virotherapy. Interstitial matrix is thought to be a significant barrier to virus particle convection between "islands" of tumor cells. One way to address this is to encode matrix-degrading enzymes within oncolytic viruses, for secretion from infected cells. To test the hypothesis that extracellular DNA provides an important barrier, we assessed the ability of DNase to promote virus spread. Nonreplicating Ad5 vectors expressing actin-resistant DNase (aDNAse I), proteinase K (PK), hyaluronidase (rhPH20), and chondroitinase ABC (CABC) were injected into established DLD human colorectal adenocarcinoma xenografts, transcomplemented with a replicating Ad5 virus. Each enzyme improved oncolysis by the replicating adenovirus, with no evidence of tumor cells being shed into the bloodstream. aDNAse I and rhPH20 hyaluronidase were then cloned into conditionally-replicating group B adenovirus, Enadenotucirev (EnAd). EnAd encoding each enzyme showed significantly better antitumor efficacy than the parental virus, with the aDNAse I-expressing virus showing improved spread. Both DNase and hyaluronidase activity was still measurable 32 days postinfection. This is the first time that extracellular DNA has been implicated as a barrier for interstitial virus spread, and suggests that oncolytic viruses expressing aDNAse I may be promising candidates for clinical translation.
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Affiliation(s)
| | | | | | | | - Kerry D Fisher
- Department of Oncology, University of Oxford, Oxford, UK
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43
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Guo Y, Klüppel M, Tang H, Tan S, Zhang P, Chen Z. Lentivirus-mediated transfection of chondroitinase ABC gene without the bacterial leader sequence enables long-term secretion of functional chondroitinase ABC in human bone marrow stromal cells. Biotechnol Lett 2016; 38:893-900. [PMID: 26910777 DOI: 10.1007/s10529-016-2046-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2015] [Accepted: 01/12/2016] [Indexed: 01/01/2023]
Abstract
OBJECTIVE To test the feasibility of secretion of functional chondroitinase ABC (ChABC), a bacterial enzyme that promotes axonal regeneration after spinal cord injury, from human bone marrow stromal cells (hBMSCs). RESULTS A lentiviral-expression vector, Lenti6.3-ChABC-3F, carrying the ChABC-3F gene without the bacterial leader sequence (aa 1-24) was constructed. Transfection of these Lenti6.3-ChABC-3F lentivirus led to stable expression in and secrection of ChABC proteins from hBMSCs for at least ten passages in culture in vitro, which was demonstrated by QRT-PCR, immunostaining, western blotting and ELISA. Moreover, the secreted ChABC proteins exhibited similar functional activity as the commercially-available ChABC. CONCLUSIONS The lentivirus-mediated transfection of chondroitinase ABC gene without the bacterial leader sequence induced substantial long-term secretion of functional ChABC in hBMSCs.
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Affiliation(s)
- Yang Guo
- Department of Neurology, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Michael Klüppel
- Department of Pediatrics, Robert H. Lurie Comprehensive Cancer Center, Stanley Manne Children's Research Institute, Northwestern University, Chicago, IL, USA
| | - Hao Tang
- Department of Neurosurgery, National Key Clinic Department, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Sheng Tan
- Department of Neurology, Zhujiang Hospital, Southern Medical University, Guangzhou, China
| | - Peidong Zhang
- Department of Cardiovascular Medicine, Zhujiang Hospital, Southern, Medical University, Guangzhou, China
| | - Zhenzhou Chen
- Department of Neurosurgery, National Key Clinic Department, Zhujiang Hospital, Southern Medical University, Guangzhou, China.
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44
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Study the effect of His-tag on chondroitinase ABC I based on characterization of enzyme. Int J Biol Macromol 2015; 78:96-101. [DOI: 10.1016/j.ijbiomac.2015.03.068] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2014] [Revised: 03/21/2015] [Accepted: 03/26/2015] [Indexed: 11/22/2022]
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45
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Chondroitin Sulfate Induces Depression of Synaptic Transmission and Modulation of Neuronal Plasticity in Rat Hippocampal Slices. Neural Plast 2015; 2015:463854. [PMID: 26075099 PMCID: PMC4444577 DOI: 10.1155/2015/463854] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2015] [Revised: 04/18/2015] [Accepted: 04/22/2015] [Indexed: 12/13/2022] Open
Abstract
It is currently known that in CNS the extracellular matrix is involved in synaptic stabilization and limitation of synaptic plasticity. However, it has been reported that the treatment with chondroitinase following injury allows the formation of new synapses and increased plasticity and functional recovery. So, we hypothesize that some components of extracellular matrix may modulate synaptic transmission. To test this hypothesis we evaluated the effects of chondroitin sulphate (CS) on excitatory synaptic transmission, cellular excitability, and neuronal plasticity using extracellular recordings in the CA1 area of rat hippocampal slices. CS caused a reversible depression of evoked field excitatory postsynaptic potentials in a concentration-dependent manner. CS also reduced the population spike amplitude evoked after orthodromic stimulation but not when the population spikes were antidromically evoked; in this last case a potentiation was observed. CS also enhanced paired-pulse facilitation and long-term potentiation. Our study provides evidence that CS, a major component of the brain perineuronal net and extracellular matrix, has a function beyond the structural one, namely, the modulation of synaptic transmission and neuronal plasticity in the hippocampus.
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46
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Chen Z, Li Y, Feng Y, Chen L, Yuan Q. Enzyme activity enhancement of chondroitinase ABC I from Proteus vulgaris by site-directed mutagenesis. RSC Adv 2015. [DOI: 10.1039/c5ra15220h] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Arg660 was found as a new active site and Asn795Ala and Trp818Ala mutants showed higher activities than the wild type based on molecular docking simulation analysis for the first time.
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Affiliation(s)
- Zhenya Chen
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Ye Li
- Department of Biotechnology
- Beijing Polytechnic
- Beijing 100029
- China
| | - Yue Feng
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
| | - Liang Chen
- Department of Biotechnology
- Beijing Polytechnic
- Beijing 100029
- China
| | - Qipeng Yuan
- State Key Laboratory of Chemical Resource Engineering
- Beijing University of Chemical Technology
- Beijing 100029
- China
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47
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Expression, purification and thermostability of MBP-chondroitinase ABC I from Proteus vulgaris. Int J Biol Macromol 2015; 72:6-10. [DOI: 10.1016/j.ijbiomac.2014.07.040] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Revised: 07/15/2014] [Accepted: 07/15/2014] [Indexed: 11/21/2022]
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48
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Warren PM, Alilain WJ. The challenges of respiratory motor system recovery following cervical spinal cord injury. PROGRESS IN BRAIN RESEARCH 2014; 212:173-220. [DOI: 10.1016/b978-0-444-63488-7.00010-0] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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49
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Yoo M, Khaled M, Gibbs KM, Kim J, Kowalewski B, Dierks T, Schachner M. Arylsulfatase B improves locomotor function after mouse spinal cord injury. PLoS One 2013; 8:e57415. [PMID: 23520469 PMCID: PMC3592852 DOI: 10.1371/journal.pone.0057415] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2012] [Accepted: 01/24/2013] [Indexed: 12/03/2022] Open
Abstract
Bacterial chondroitinase ABC (ChaseABC) has been used to remove the inhibitory chondroitin sulfate chains from chondroitin sulfate proteoglycans to improve regeneration after rodent spinal cord injury. We hypothesized that the mammalian enzyme arylsulfatase B (ARSB) would also enhance recovery after mouse spinal cord injury. Application of the mammalian enzyme would be an attractive alternative to ChaseABC because of its more robust chemical stability and reduced immunogenicity. A one-time injection of human ARSB into injured mouse spinal cord eliminated immunoreactivity for chondroitin sulfates within five days, and up to 9 weeks after injury. After a moderate spinal cord injury, we observed improvements of locomotor recovery assessed by the Basso Mouse Scale (BMS) in ARSB treated mice, compared to the buffer-treated control group, at 6 weeks after injection. After a severe spinal cord injury, mice injected with equivalent units of ARSB or ChaseABC improved similarly and both groups achieved significantly more locomotor recovery than the buffer-treated control mice. Serotonin and tyrosine hydroxylase immunoreactive axons were more extensively present in mouse spinal cords treated with ARSB and ChaseABC, and the immunoreactive axons penetrated further beyond the injury site in ARSB or ChaseABC treated mice than in control mice. These results indicate that mammalian ARSB improves functional recovery after CNS injury. The structural/molecular mechanisms underlying the observed functional improvement remain to be elucidated.
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Affiliation(s)
- Myungsik Yoo
- W. M. Keck Center for Collaborative Neuroscience and Department of Cell Biology and Neuroscience, Rutgers University, Piscataway, New Jersey, United States of America
| | - Muntasir Khaled
- W. M. Keck Center for Collaborative Neuroscience and Department of Cell Biology and Neuroscience, Rutgers University, Piscataway, New Jersey, United States of America
| | - Kurt M. Gibbs
- W. M. Keck Center for Collaborative Neuroscience and Department of Cell Biology and Neuroscience, Rutgers University, Piscataway, New Jersey, United States of America
| | - Jonghun Kim
- W. M. Keck Center for Collaborative Neuroscience and Department of Cell Biology and Neuroscience, Rutgers University, Piscataway, New Jersey, United States of America
| | - Björn Kowalewski
- Department of Chemistry, Biochemistry I, Bielefeld University, Universitätsstr Bielefeld, Germany
| | - Thomas Dierks
- Department of Chemistry, Biochemistry I, Bielefeld University, Universitätsstr Bielefeld, Germany
| | - Melitta Schachner
- W. M. Keck Center for Collaborative Neuroscience and Department of Cell Biology and Neuroscience, Rutgers University, Piscataway, New Jersey, United States of America
- Center for Neuroscience, Shantou University Medical College, Shantou, Guandong Province, People’s Republic of China
- * E-mail:
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50
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Maroto M, Fernández-Morales JC, Padín JF, González JC, Hernández-Guijo JM, Montell E, Vergés J, de Diego AMG, García AG. Chondroitin sulfate, a major component of the perineuronal net, elicits inward currents, cell depolarization, and calcium transients by acting on AMPA and kainate receptors of hippocampal neurons. J Neurochem 2013; 125:205-13. [PMID: 23350646 DOI: 10.1111/jnc.12159] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2012] [Revised: 10/08/2012] [Accepted: 01/15/2013] [Indexed: 12/19/2022]
Abstract
Chondroitin sulfate (CS) proteoglycans (CSPGs) are the most abundant PGs of the brain extracellular matrix (ECM). Free CS could be released during ECM degradation and exert physiological functions; thus, we aimed to investigate the effects of CS on voltage- and current-clamped rat embryo hippocampal neurons in primary cultures. We found that CS elicited a whole-cell Na(+)-dependent inward current (ICS) that produced drastic cell depolarization, and a cytosolic calcium transient ([Ca(2+)]c). Those effects were similar to those elicited by α-amino-3-hydroxy-5-methylisoxazole-4-propionate (AMPA) and kainate, were completely blocked by NBQX and CNQX, were partially blocked by GYKI, and were unaffected by MK801 and D-APV. Furthermore, ICS and AMPA currents were similarly potentiated by cyclothiazide, a positive allosteric modulator of AMPA receptors. Because CSPGs have been attributed Ca(2) (+) -dependent roles, such as neural network development, axon pathfinding, plasticity and regeneration after CNS injury, CS action after ECM degradation could be contributing to the mediation of these effects through its interaction with AMPA and kainate receptors.
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Affiliation(s)
- Marcos Maroto
- Instituto Teófilo Hernando, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain.,Departamento de Farmacología y Terapéutica, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain
| | - José-Carlos Fernández-Morales
- Instituto Teófilo Hernando, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain.,Departamento de Farmacología y Terapéutica, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain
| | - Juan Fernando Padín
- Instituto Teófilo Hernando, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain.,Departamento de Farmacología y Terapéutica, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain
| | - José C González
- Instituto Teófilo Hernando, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain.,Departamento de Farmacología y Terapéutica, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain
| | - Jesús M Hernández-Guijo
- Instituto Teófilo Hernando, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain.,Departamento de Farmacología y Terapéutica, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain
| | - Eulalia Montell
- Pre-Clinical R&D Area, Pharmascience Division, Bioibérica, Barcelona, Spain
| | - Josep Vergés
- Pre-Clinical R&D Area, Pharmascience Division, Bioibérica, Barcelona, Spain
| | - Antonio M G de Diego
- Instituto Teófilo Hernando, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain.,Departamento de Farmacología y Terapéutica, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain
| | - Antonio G García
- Instituto Teófilo Hernando, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain.,Departamento de Farmacología y Terapéutica, Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain.,Instituto de Investigación Sanitaria, Servicio de Farmacología Clínica, Hospital Universitario de la Princesa. Facultad de Medicina, Universidad Autónoma de Madrid, Madrid, Spain
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