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Wu X, Zhang T, Jia J, Chen Y, Zhang Y, Fang Z, Zhang C, Bai Y, Li Z, Li Y. Perspective insights into versatile hydrogels for stroke: From molecular mechanisms to functional applications. Biomed Pharmacother 2024; 173:116309. [PMID: 38479180 DOI: 10.1016/j.biopha.2024.116309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2023] [Revised: 02/13/2024] [Accepted: 02/17/2024] [Indexed: 03/27/2024] Open
Abstract
As the leading killer of life and health, stroke leads to limb paralysis, speech disorder, dysphagia, cognitive impairment, mental depression and other symptoms, which entail a significant financial burden to society and families. At present, physiology, clinical medicine, engineering, and materials science, advanced biomaterials standing on the foothold of these interdisciplinary disciplines provide new opportunities and possibilities for the cure of stroke. Among them, hydrogels have been endowed with more possibilities. It is well-known that hydrogels can be employed as potential biosensors, medication delivery vectors, and cell transporters or matrices in tissue engineering in tissue engineering, and outperform many traditional therapeutic drugs, surgery, and materials. Therefore, hydrogels become a popular scaffolding treatment option for stroke. Diverse synthetic hydrogels were designed according to different pathophysiological mechanisms from the recently reported literature will be thoroughly explored. The biological uses of several types of hydrogels will be highlighted, including pro-angiogenesis, pro-neurogenesis, anti-oxidation, anti-inflammation and anti-apoptosis. Finally, considerations and challenges of using hydrogels in the treatment of stroke are summarized.
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Affiliation(s)
- Xinghan Wu
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China; Department of Pharmacy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Tiejun Zhang
- Department of Neurosurgery, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Jing Jia
- Department of Pharmacy, Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan 250014, China
| | - Yining Chen
- Key laboratory for Leather Chemistry and Engineering of the Education Ministry, Sichuan University, Chengdu, Sichuan 610065, China
| | - Ying Zhang
- Department of Pharmacy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Zhenwei Fang
- Department of Pharmacy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Chenyu Zhang
- Department of Pharmacy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Yang Bai
- Department of Pharmacy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China
| | - Zhengjun Li
- Department of Dermatology, Qilu Hospital, Shandong University, Jinan 250012, China
| | - Yuwen Li
- Department of Pharmacy, West China Hospital, Sichuan University, Chengdu, Sichuan 610041, China.
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Wang X, Ma Y, Lu F, Chang Q. The diversified hydrogels for biomedical applications and their imperative roles in tissue regeneration. Biomater Sci 2023; 11:2639-2660. [PMID: 36790251 DOI: 10.1039/d2bm01486f] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Abstract
Repair and regeneration of tissues after injury are complex pathophysiological processes. Microbial infection, malnutrition, and an ischemic and hypoxic microenvironment in the injured area can impede the typical healing cascade. Distinguished by biomimicry of the extracellular matrix, high aqueous content, and diverse functions, hydrogels have revolutionized clinical practices in tissue regeneration owing to their outstanding hydrophilicity, biocompatibility, and biodegradability. Various hydrogels such as smart hydrogels, nanocomposite hydrogels, and acellular matrix hydrogels are widely used for applications ranging from bench-scale to an industrial scale. In this review, some emerging hydrogels in the biomedical field are briefly discussed. The protective roles of hydrogels in wound dressings and their diverse biological effects on multiple tissues such as bone, cartilage, nerve, muscle, and adipose tissue are also discussed. The vehicle functions of hydrogels for chemicals and cell payloads are detailed. Additionally, this review emphasizes the particular characteristics of hydrogel products that promote tissue repair and reconstruction such as anti-infection, inflammation regulation, and angiogenesis.
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Affiliation(s)
- Xinhui Wang
- Department of Plastic and Cosmetic Surgery, Nanfang Hospital, Southern Medical University, 510515, China.
| | - Yuan Ma
- Department of Plastic and Cosmetic Surgery, Nanfang Hospital, Southern Medical University, 510515, China.
| | - Feng Lu
- Department of Plastic and Cosmetic Surgery, Nanfang Hospital, Southern Medical University, 510515, China.
| | - Qiang Chang
- Department of Plastic and Cosmetic Surgery, Nanfang Hospital, Southern Medical University, 510515, China.
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Shan F, Ji Q, Song Y, Chen Y, Hao T, Li R, Zhang N, Wang Y. A fast and efficient method for isolating Schwann cells from sciatic nerves of neonatal mice. J Neurosci Methods 2021; 366:109404. [PMID: 34752812 DOI: 10.1016/j.jneumeth.2021.109404] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 10/20/2021] [Accepted: 11/01/2021] [Indexed: 11/27/2022]
Abstract
BACKGROUND Schwann cells (SCs) isolation is one of the basic techniques for study of peripheral nervous system and peripheral neuropathy. A combined and effective method of isolating SCs from sciatic nerves of newborn mice with high yield and purity is still lacking. NEW METHODS Sciatic nerves from neonatal mice aged 3-5 days serve as the source of SCs. Removal of adjacent connective tissue and epineurium, treatment with arabinoside hydrochloride and differential cell detachment technique were applied to eliminate fibroblast contamination and increase the purity of SCs. Combined use of collagenase/dispase and trypsin was chosen to increase the yield of SCs. Culture dishes precoated with poly-l-lysine and laminin, culture medium supplemented with heregulin β-1 and forskolin, and reasonable cell seeding density were implemented to increase the growth and proliferation of cultured SCs. Immunostaining of S100β and p75 neurotrophin receptor was used to identify the purity of SCs. RESULTS Our method is able to obtain high-yield SCs with a purity of 90% within five days and a purity more than 99% within seven days from sciatic nerves of neonatal mice. COMPARISON WITH EXISTING METHODS Previous SCs isolation mostly focused on rats or adult mice and have a few limitations due to fibroblasts contamination, low yield and time-consuming. Our method permits SCs isolation from neonatal mice with a high yield and purity of primary SCs within 7 days. CONCLUSION We described a fast, efficient and step-by-step method of isolating SCs from sciatic nerves of neonatal mice with high yield and purity.
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Affiliation(s)
- Fangzhen Shan
- Medical Research Centre, Affiliated Hospital of Jining Medical University, Jining, Shandong Province, China
| | - Qingjie Ji
- Department of Rehabilitation, Affiliated Hospital of Jining Medical University, Jining, Shandong Province, China
| | - Yan Song
- Department of Neurology, Affiliated Hospital of Jining Medical University, Jining, Shandong Province, China
| | - Yunfeng Chen
- Department of Rehabilitation, Affiliated Hospital of Jining Medical University, Jining, Shandong Province, China
| | - Tielin Hao
- Department of Neurology, Affiliated Hospital of Jining Medical University, Jining, Shandong Province, China; Clinical Medical College, Jining Medical University, Jining, Shandong Province, China
| | - Ran Li
- Department of Neurology, Affiliated Hospital of Jining Medical University, Jining, Shandong Province, China; Clinical Medical College, Jining Medical University, Jining, Shandong Province, China
| | - Nannan Zhang
- Department of Pulmonary and Critical Care Medicine, Affiliated Hospital of Jining Medical University, Jining, Shandong Province, China.
| | - Yuzhong Wang
- Medical Research Centre, Affiliated Hospital of Jining Medical University, Jining, Shandong Province, China; Department of Neurology, Affiliated Hospital of Jining Medical University, Jining, Shandong Province, China.
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Nicolas J, Magli S, Rabbachin L, Sampaolesi S, Nicotra F, Russo L. 3D Extracellular Matrix Mimics: Fundamental Concepts and Role of Materials Chemistry to Influence Stem Cell Fate. Biomacromolecules 2020; 21:1968-1994. [PMID: 32227919 DOI: 10.1021/acs.biomac.0c00045] [Citation(s) in RCA: 272] [Impact Index Per Article: 68.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Synthetic 3D extracellular matrices (ECMs) find application in cell studies, regenerative medicine, and drug discovery. While cells cultured in a monolayer may exhibit unnatural behavior and develop very different phenotypes and genotypes than in vivo, great efforts in materials chemistry have been devoted to reproducing in vitro behavior in in vivo cell microenvironments. This requires fine-tuning the biochemical and structural actors in synthetic ECMs. This review will present the fundamentals of the ECM, cover the chemical and structural features of the scaffolds used to generate ECM mimics, discuss the nature of the signaling biomolecules required and exploited to generate bioresponsive cell microenvironments able to induce a specific cell fate, and highlight the synthetic strategies involved in creating functional 3D ECM mimics.
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Affiliation(s)
- Julien Nicolas
- Université Paris-Saclay, CNRS, Institut Galien Paris-Saclay, , 92296 Châtenay-Malabry, France
| | - Sofia Magli
- University of Milano-Bicocca, Department of Biotechnology and Biosciences, Piazza della Scienza 2, 20126 Milan, Italy
| | - Linda Rabbachin
- University of Milano-Bicocca, Department of Biotechnology and Biosciences, Piazza della Scienza 2, 20126 Milan, Italy
| | - Susanna Sampaolesi
- University of Milano-Bicocca, Department of Biotechnology and Biosciences, Piazza della Scienza 2, 20126 Milan, Italy
| | - Francesco Nicotra
- University of Milano-Bicocca, Department of Biotechnology and Biosciences, Piazza della Scienza 2, 20126 Milan, Italy
| | - Laura Russo
- University of Milano-Bicocca, Department of Biotechnology and Biosciences, Piazza della Scienza 2, 20126 Milan, Italy
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Abalymov A, Parakhonskiy B, Skirtach AG. Polymer- and Hybrid-Based Biomaterials for Interstitial, Connective, Vascular, Nerve, Visceral and Musculoskeletal Tissue Engineering. Polymers (Basel) 2020; 12:E620. [PMID: 32182751 PMCID: PMC7182904 DOI: 10.3390/polym12030620] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2019] [Revised: 02/19/2020] [Accepted: 03/03/2020] [Indexed: 12/11/2022] Open
Abstract
In this review, materials based on polymers and hybrids possessing both organic and inorganic contents for repairing or facilitating cell growth in tissue engineering are discussed. Pure polymer based biomaterials are predominantly used to target soft tissues. Stipulated by possibilities of tuning the composition and concentration of their inorganic content, hybrid materials allow to mimic properties of various types of harder tissues. That leads to the concept of "one-matches-all" referring to materials possessing the same polymeric base, but different inorganic content to enable tissue growth and repair, proliferation of cells, and the formation of the ECM (extra cellular matrix). Furthermore, adding drug delivery carriers to coatings and scaffolds designed with such materials brings additional functionality by encapsulating active molecules, antibacterial agents, and growth factors. We discuss here materials and methods of their assembly from a general perspective together with their applications in various tissue engineering sub-areas: interstitial, connective, vascular, nervous, visceral and musculoskeletal tissues. The overall aims of this review are two-fold: (a) to describe the needs and opportunities in the field of bio-medicine, which should be useful for material scientists, and (b) to present capabilities and resources available in the area of materials, which should be of interest for biologists and medical doctors.
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Affiliation(s)
- Anatolii Abalymov
- Department of Biotechnology, Faculty of Bioscience Engineering, Ghent University, 9000 Ghent, Belgium
| | | | - Andre G. Skirtach
- Department of Biotechnology, Faculty of Bioscience Engineering, Ghent University, 9000 Ghent, Belgium
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6
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Lei Y, Wu M, Wang J, Zhang H, Zhan X, Sun Z, Wu J. Preparation and property of a biantenna macromolecule based on polysialic acid. Int J Biol Macromol 2019; 155:1342-1349. [PMID: 31730980 DOI: 10.1016/j.ijbiomac.2019.11.107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Revised: 10/25/2019] [Accepted: 11/11/2019] [Indexed: 11/16/2022]
Abstract
Polysialic acid (PSA), an acidic polysaccharide usually exists as a double-chain structure on cell adhesion molecules in vertebrates. The available PSA produced from Escherichia coli fermentation, however, is monochain PSA. In this work, a biomimetic biantenna type PSA (biPSA) was synthesized in vitro under mild conditions, and the terminal nonreducing ends of sialic acid residue were retained. The structure of biPSA was characterized through infrared spectroscopy, and NMR, and the double-chain structure of biPSA was confirmed by the doubled molecular weight and particle size of biPSA. Analysis through circular dichroism, isothermal titration calorimetry, and thermostability experiments revealed that the obtained biPSA was more stable in aqueous solution than PSA, especially after complexation with Ca2+, which increased the variation in enthalpy and entropy. However, the addition of Cu2+ had a negligible effect on configuration of PSA and biPSA. The addition of Ca2+ promoted cell proliferation in a culture of microglia BV-2 cells with biPSA in medium. By contrast, the addition of Cu2+ had toxic effects. Supplementation with biPSA can maintain cell viability for a longer period than supplementation with monochain PSA. This work indicates that biPSA is a potential substitute for monochain PSA in practical applications.
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Affiliation(s)
- Yanli Lei
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Miaosen Wu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Junyi Wang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Hongtao Zhang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Xiaobei Zhan
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Zhenglong Sun
- Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, China
| | - Jianrong Wu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China.
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Chen JW, Lim K, Bandini SB, Harris GM, Spechler JA, Arnold CB, Fardel R, Schwarzbauer JE, Schwartz J. Controlling the Surface Chemistry of a Hydrogel for Spatially Defined Cell Adhesion. ACS APPLIED MATERIALS & INTERFACES 2019; 11:15411-15416. [PMID: 30924633 DOI: 10.1021/acsami.9b04023] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
A two-step synthesis is described for activating the surface of a fully hydrated hydrogel that is of interest as a possible scaffold for neural regeneration devices. The first step exploits the water content of the hydrogel and the hydrophobicity of the reaction solvent to create a thin oxide layer on the hydrogel surface using a common titanium or zirconium alkoxide. This layer serves as a reactive interface that enables rapid transformation of the hydrophilic, cell-nonadhesive hydrogel into either a highly hydrophobic surface by reaction with an alkylphosphonic acid, or into a cell-adhesive one using a (α,ω-diphosphono)alkane. Physically imprinting a mask ("debossing") into the hydrogel, followed by a two-step surface modification with a phosphonate, allows for patterning its surface to create spatially defined, cell-adhesive regions.
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8
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Bioproduction, purification, and application of polysialic acid. Appl Microbiol Biotechnol 2018; 102:9403-9409. [DOI: 10.1007/s00253-018-9336-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 08/13/2018] [Accepted: 08/15/2018] [Indexed: 01/27/2023]
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9
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Hydrogel Scaffolds: Towards Restitution of Ischemic Stroke-Injured Brain. Transl Stroke Res 2018; 10:1-18. [DOI: 10.1007/s12975-018-0655-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 05/17/2018] [Accepted: 08/19/2018] [Indexed: 12/27/2022]
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10
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Martin AD, Chua SW, Au CG, Stefen H, Przybyla M, Lin Y, Bertz J, Thordarson P, Fath T, Ke YD, Ittner LM. Peptide Nanofiber Substrates for Long-Term Culturing of Primary Neurons. ACS APPLIED MATERIALS & INTERFACES 2018; 10:25127-25134. [PMID: 29979564 DOI: 10.1021/acsami.8b07560] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
The culturing of primary neurons represents a central pillar of neuroscience research. Primary neurons are derived directly from brain tissue and recapitulate key aspects of neuronal development in an in vitro setting. Unlike neural stem cells, primary neurons do not divide; thus, initial attachment of cells to a suitable substrate is critical. Commonly used polylysine substrates can suffer from batch variability owing to their polymeric nature. Herein, we report the use of chemically well-defined, self-assembling tetrapeptides as substrates for primary neuronal culture. These water-soluble peptides assemble into fibers which facilitate adhesion and development of primary neurons, their long-term survival (>40 days), synaptic maturation, and electrical activity. Furthermore, these substrates are permissive toward neuronal transfection and transduction which, coupled with their uniformity and reproducible nature, make them suitable for a wide variety of applications in neuroscience.
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Affiliation(s)
- Adam D Martin
- Dementia Research Unit, School of Medical Sciences, Faculty of Medicine , University of New South Wales , Sydney , NSW 2052 , Australia
- School of Chemistry, The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science & Technology , University of New South Wales , Sydney , NSW , 2052 , Australia
| | - Sook Wern Chua
- Dementia Research Unit, School of Medical Sciences, Faculty of Medicine , University of New South Wales , Sydney , NSW 2052 , Australia
| | - Carol G Au
- Dementia Research Unit, School of Medical Sciences, Faculty of Medicine , University of New South Wales , Sydney , NSW 2052 , Australia
| | - Holly Stefen
- Neurodegeneration and Repair Unit, School of Medical Sciences and Neuronal Culture Core Facility , University of New South Wales , Sydney , NSW 2052 , Australia
| | - Magdalena Przybyla
- Dementia Research Unit, School of Medical Sciences, Faculty of Medicine , University of New South Wales , Sydney , NSW 2052 , Australia
| | - Yijun Lin
- Dementia Research Unit, School of Medical Sciences, Faculty of Medicine , University of New South Wales , Sydney , NSW 2052 , Australia
| | - Josefine Bertz
- Dementia Research Unit, School of Medical Sciences, Faculty of Medicine , University of New South Wales , Sydney , NSW 2052 , Australia
| | - Pall Thordarson
- School of Chemistry, The Australian Centre for Nanomedicine and the ARC Centre of Excellence in Convergent Bio-Nano Science & Technology , University of New South Wales , Sydney , NSW , 2052 , Australia
| | - Thomas Fath
- Neurodegeneration and Repair Unit, School of Medical Sciences and Neuronal Culture Core Facility , University of New South Wales , Sydney , NSW 2052 , Australia
- Dementia Research Centre, Faculty of Medicine and Health Sciences , Macquarie University , Sydney , NSW 2109 , Australia
| | - Yazi D Ke
- Dementia Research Unit, School of Medical Sciences, Faculty of Medicine , University of New South Wales , Sydney , NSW 2052 , Australia
| | - Lars M Ittner
- Dementia Research Unit, School of Medical Sciences, Faculty of Medicine , University of New South Wales , Sydney , NSW 2052 , Australia
- Dementia Research Centre, Faculty of Medicine and Health Sciences , Macquarie University , Sydney , NSW 2109 , Australia
- Neuroscience Research Australia , Sydney , NSW 2031 , Australia
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11
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Wu J, Fu X, Jiang Y, Ma X, Zhang H, Zhan X. Dipotassium phosphate improves the molecular weight stability of polysialic acid in Escherichia coli K235 culture broth. BIORESOURCE TECHNOLOGY 2018; 247:30-35. [PMID: 28946091 DOI: 10.1016/j.biortech.2017.08.142] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 08/19/2017] [Accepted: 08/22/2017] [Indexed: 06/07/2023]
Abstract
This work elucidated the intrinsic mechanism underlying the influence of K2HPO4 on PSA production and molecular weight (MW) stability. Among the different potassium salts mixed with K2HPO4 in the initial medium, those with buffering capacity were favorable for PSA production. In the bioreactor culture with pH control, adding an appropriate concentration of K2HPO4 could enhance PSA production. A dual-phase pH control strategy with ammonia water and KOH could also increase the yield and maintain the MW stability of PSA. Zeta potential test, UV/circular dichroism spectra, and transmission electric microscopy were utilized to explore the configuration of K2HPO4-PSA complex. The results from this study can serve a good basis for the industrial-scale production of PSA with stable MW.
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Affiliation(s)
- Jianrong Wu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Xudong Fu
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Yun Jiang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Xu Ma
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Hongtao Zhang
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Xiaobei Zhan
- Key Laboratory of Carbohydrate Chemistry and Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China.
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12
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Leigh BL, Truong K, Bartholomew R, Ramirez M, Hansen MR, Allan Guymon C. Tuning Surface and Topographical Features to Investigate Competitive Guidance of Spiral Ganglion Neurons. ACS APPLIED MATERIALS & INTERFACES 2017; 9:31488-31496. [PMID: 28841276 PMCID: PMC6341486 DOI: 10.1021/acsami.7b09258] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Cochlear Implants (CIs) suffer from limited tonal resolution due, in large part, to spatial separation between stimulating electrode arrays and primary neural receptors. In this work, a combination of physical and chemical micropatterns, formed on acrylate polymers, are used to direct the growth of primary spiral ganglion neurons (SGNs), the inner ear neurons. Utilizing the inherent temporal and spatial control of photopolymerization, physical microgrooves are fabricated using a photomask in a single step process. Biochemical patterns are generated by adsorbing laminin, a cell adhesion protein, to acrylate polymer surfaces followed by irradiation through a photomask with UV light to deactivate protein in exposed areas and generate parallel biochemical patterns. Laminin deactivation was shown increase as a function of UV light exposure while remaining adsorbed to the polymer surface. SGN neurites show alignment to both biochemical and physical patterns when evaluated individually. Competing biochemical and physical patterns were also examined. The relative guiding strength of physical cues was varied by independently changing both the amplitude and the band spacing of the microgrooves, with higher amplitudes and shorter band spacing providing cues that more effective guide neurite growth. SGN neurites aligned to laminin patterns with lower physical pattern amplitude and thus weaker physical cues. Alignment of SGNs shifted toward the physical pattern with higher amplitude and lower periodicity patterns which represent stronger cues. These results demonstrate the ability of photopolymerized microfeatures to modulate alignment of inner ear neurites even in the presence of conflicting physical and biochemical cues laying the groundwork for next generation cochlear implants and neural prosthetic devices.
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Affiliation(s)
- Braden L. Leigh
- Departments of Chemical and Biochemical Engineering, University of Iowa, Iowa City, IA 52242, USA
| | - Kristy Truong
- Otolaryngology Head and Neck Surgery, University of Iowa, Iowa City, IA 52242, USA
| | - Reid Bartholomew
- Otolaryngology Head and Neck Surgery, University of Iowa, Iowa City, IA 52242, USA
| | - Mark Ramirez
- Otolaryngology Head and Neck Surgery, University of Iowa, Iowa City, IA 52242, USA
| | - Marlan R. Hansen
- Otolaryngology Head and Neck Surgery, University of Iowa, Iowa City, IA 52242, USA
- Neurosurgery, University of Iowa, Iowa City, IA 52242, USA
| | - C. Allan Guymon
- Departments of Chemical and Biochemical Engineering, University of Iowa, Iowa City, IA 52242, USA
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13
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Wu JR, Zhan XB, Zheng ZY, Zhang HT. Synthesis and characterization of polysialic acid/carboxymethyl chitosan hydrogel with potential for drug delivery. RUSSIAN JOURNAL OF BIOORGANIC CHEMISTRY 2015. [DOI: 10.1134/s1068162015040135] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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14
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Williams S, Neumann A, Bremer I, Su Y, Dräger G, Kasper C, Behrens P. Nanoporous silica nanoparticles as biomaterials: evaluation of different strategies for the functionalization with polysialic acid by step-by-step cytocompatibility testing. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2015; 26:125. [PMID: 25690616 DOI: 10.1007/s10856-015-5409-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Accepted: 10/23/2014] [Indexed: 06/04/2023]
Abstract
Nanoporous silica materials have become a prominent novel class of biomaterials which are typically applied as nanoparticles or thin films. Their large surface area combined with the rich surface chemistry of amorphous silica affords the possibility to equip this material with variable functionalities, also with several different ones on the same particle or coating. Although many studies have shown that nanoporous silica is apparently non-toxic and basically biocompatible, any surface modification may change the surface properties considerably and, therefore, the modified materials should be checked for their biocompatibility at every step. Here we report on different silane-based functionalization strategies, firstly a conventional succinic anhydride-based linker system and, secondly, copper-catalyzed click chemistry, to bind polysialic acid, a polysaccharide important in neurogenesis, onto nanoporous silica nanoparticles (NPSNPs) of MCM-41 type. At each of the different modification steps, the materials are characterized by cell culture experiments. The results show that polysialic acid can be immobilized on the surface of NPSNPs by using different strategies. The cell culture experiments show that the kind of surface immobilization has a strong influence on the toxicity of the material versus the cells. Whereas most modifications appear inoffensive, NPSNPs modified by click reactions are toxic, probably due to residues of the Cu catalyst used in these reactions.
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Affiliation(s)
- Sina Williams
- Cluster of Excellence "Hearing4all", Institut für Anorganische Chemie, Leibniz Universität Hannover, Callinstraße 9, 30167, Hannover, Germany
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15
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Effects of polysialic acid on sensory innervation of the cornea. Dev Biol 2014; 398:193-205. [PMID: 25478909 DOI: 10.1016/j.ydbio.2014.11.020] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Revised: 11/07/2014] [Accepted: 11/19/2014] [Indexed: 01/08/2023]
Abstract
Sensory trigeminal growth cones innervate the cornea in a coordinated fashion during embryonic development. Polysialic acid (polySia) is known for its important roles during nerve development and regeneration. The purpose of this work is to determine whether polySia, present in developing eyefronts and on the surface of sensory nerves, may provide guidance cues to nerves during corneal innervation. Expression and localization of polySia in embryonic day (E)5-14 chick eyefronts and E9 trigeminal ganglia were identified using Western blotting and immunostaining. Effects of polySia removal on trigeminal nerve growth behavior were determined in vivo, using exogenous endoneuraminidase (endoN) treatments to remove polySia substrates during chick cornea development, and in vitro, using neuronal explant cultures. PolySia substrates, made by the physical adsorption of colominic acid to a surface coated with poly-d-lysine (PDL), were used as a model to investigate functions of the polySia expressed in axonal environments. PolySia was localized within developing eyefronts and on trigeminal sensory nerves. Distributions of PolySia in corneas and pericorneal regions are developmentally regulated. PolySia removal caused defasciculation of the limbal nerve trunk in vivo from E7 to E10. Removal of polySia on trigeminal neurites inhibited neurite outgrowth and caused axon defasciculation, but did not affect Neural Cell Adhesion Molecule (NCAM) expression or Schwann cell migration in vitro. PolySia substrates in vitro inhibited outgrowth of trigeminal neurites and promoted their fasciculation. In conclusion, polySia is localized on corneal nerves and in their targeting environment during early developing stages of chick embryos. PolySias promote fasciculation of trigeminal axons in vivo and in vitro, whereas, in contrast, their removal promotes defasciculation.
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Tegaserod mimics the neurostimulatory glycan polysialic acid and promotes nervous system repair. Neuropharmacology 2013; 79:456-66. [PMID: 24067923 PMCID: PMC4618794 DOI: 10.1016/j.neuropharm.2013.09.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Revised: 08/30/2013] [Accepted: 09/11/2013] [Indexed: 11/21/2022]
Abstract
Glycans attached to the cell surface via proteins or lipids or exposed in the extracellular matrix affect many cellular processes, including neuritogenesis, cell survival and migration, as well as synaptic activity and plasticity. These functions make glycans attractive molecules for stimulating repair of the injured nervous system. Yet, glycans are often difficult to synthesize or isolate and have the disadvantage to be unstable in a complex tissue environment. To circumvent these issues, we have screened a library of small organic compounds to search for structural and functional mimetics of the neurostimulatory glycan polysialic acid (PSA) and identified the 5-HT4 receptor agonist tegaserod as a PSA mimetic. The PSA mimicking activity of tegaserod was shown in cultures of central and peripheral nervous system cells of the mouse and found to be independent of its described function as a serotonin (5-HT4) receptor agonist. In an in vivo model for peripheral nerve regeneration, mice receiving tegaserod at the site of injury showed enhanced recovery compared to control mice receiving vehicle control as evidenced by functional measurements and histology. These data indicate that tegaserod could be repurposed for treatment of nervous system injuries and underscores the potential of using small molecules as mimetics of neurostimulatory glycans.
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Du J, Tan E, Kim HJ, Zhang A, Bhattacharya R, Yarema KJ. Comparative evaluation of chitosan, cellulose acetate, and polyethersulfone nanofiber scaffolds for neural differentiation. Carbohydr Polym 2013; 99:483-90. [PMID: 24274534 DOI: 10.1016/j.carbpol.2013.08.050] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2013] [Revised: 07/31/2013] [Accepted: 08/20/2013] [Indexed: 12/29/2022]
Abstract
Based on accumulating evidence that the 3D topography and the chemical features of a growth surface influence neuronal differentiation, we combined these two features by evaluating the cytotoxicity, proliferation, and differentiation of the rat PC12 line and human neural stem cells (hNSCs) on chitosan (CS), cellulose acetate (CA), and polyethersulfone (PES)-derived electrospun nanofibers that had similar diameters, centered in the 200-500 nm range. None of the nanofibrous materials were cytotoxic compared to 2D (e.g., flat surface) controls; however, proliferation generally was inhibited on the nanofibrous scaffolds although to a lesser extent on the polysaccharide-derived materials compared to PES. In an exception to the trend toward slower growth on the 3D substrates, hNSCs differentiated on the CS nanofibers proliferated faster than the 2D controls and both cell types showed enhanced indication of neuronal differentiation on the CS scaffolds. Together, these results demonstrate beneficial attributes of CS for neural tissue engineering when this polysaccharide is used in the context of the defined 3D topography found in electrospun nanofibers.
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Affiliation(s)
- Jian Du
- Department of Biomedical Engineering and the Translational Tissue Engineering Center, The Johns Hopkins University, Baltimore, MD, USA
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18
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Li X, Katsanevakis E, Liu X, Zhang N, Wen X. Engineering neural stem cell fates with hydrogel design for central nervous system regeneration. Prog Polym Sci 2012. [DOI: 10.1016/j.progpolymsci.2012.02.004] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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19
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Galuska SP, Geyer H, Mink W, Kaese P, Kühnhardt S, Schäfer B, Mühlenhoff M, Freiberger F, Gerardy-Schahn R, Geyer R. Glycomic strategy for efficient linkage analysis of di-, oligo- and polysialic acids. J Proteomics 2012; 75:5266-78. [PMID: 22728599 DOI: 10.1016/j.jprot.2012.06.011] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2012] [Revised: 06/07/2012] [Accepted: 06/11/2012] [Indexed: 12/17/2022]
Abstract
Sialic acid polymers of glycoproteins and glycolipids are characterized by a high diversity in nature and are involved in distinct biological processes depending inter alia on the glycosidic linkages between the present sialic acid residues. Though suitable protocols are available for chain length and sialic acid determination, sensitive methods for linkage analysis of di-, oligo-, and polysialic acids (di/oligo/polySia) are still pending. In this study, we have established a highly sensitive glycomic strategy for this purpose which is based on permethylation of di/oligo/polySia after tagging their reducing ends with the fluorescent dye 1,2-diamino-4,5-methylenedioxybenzene (DMB). Using DMB-labeled sialic acid di/oligo/polymers glycosidic linkages could be efficiently determined and, optionally, the established working procedure can be combined with HPLC for in depth characterization of distinct di/oligo/polySia chains. Moreover, the outlined approach can be directly applied to mammalian tissue samples and linkage analysis of sialic acid polymers present in biopsy samples of neuroblastoma tissue demonstrating the usefulness of the outlined work flow to screen, for example, cancer tissue for the presence of distinct variants of di/oligo/polySia as potentially novel biomarkers. Hence, the described strategy offers a highly sensitive and efficient strategy for identification of glycosidic linkages in sialic acid di/oligo/polymers of glycoproteins and glycolipids.
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Affiliation(s)
- Sebastian P Galuska
- Institute of Biochemistry, Faculty of Medicine, University of Giessen, Friedrichstrasse 24, D-35392 Giessen, Germany.
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20
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Park JK, Choi DJ, Kim SM, Choi HN, Park JW, Jang SJ, Choo YK, Lee CG, Park YI. Purification and characterization of a polysialic acid-specific sialidase from Pseudomonas fluorescens JK-0412. BIOTECHNOL BIOPROC E 2012. [DOI: 10.1007/s12257-011-0495-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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21
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Jakobsson E, Schwarzer D, Jokilammi A, Finne J. Endosialidases: Versatile Tools for the Study of Polysialic Acid. Top Curr Chem (Cham) 2012; 367:29-73. [PMID: 22851159 DOI: 10.1007/128_2012_349] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Polysialic acid is an α2,8-linked N-acetylneuraminic acid polymer found on the surface of both bacterial and eukaryotic cells. Endosialidases are bacteriophage-borne glycosyl hydrolases that specifically cleave polysialic acid. The crystal structure of an endosialidase reveals a trimeric mushroom-shaped molecule which, in addition to the active site, harbors two additional polysialic acid binding sites. Folding of the protein crucially depends on an intramolecular C-terminal chaperone domain that is proteolytically released in an intramolecular reaction. Based on structural data and previous considerations, an updated catalytic mechanism is discussed. Endosialidases degrade polysialic acid in a processive mode of action, and a model for its mechanism is suggested. The review summarizes the structural and biochemical elucidations of the last decade and the importance of endosialidases in biochemical and medical applications. Active endosialidases are important tools in studies on the biological roles of polysialic acid, such as the pathogenesis of septicemia and meningitis by polysialic acid-encapsulated bacteria, or its role as a modulator of the adhesion and interactions of neural and other cells. Endosialidase mutants that have lost their polysialic acid cleaving activity while retaining their polysialic acid binding capability have been fused to green fluorescent protein to provide an efficient tool for the specific detection of polysialic acid.
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Affiliation(s)
- Elina Jakobsson
- Department of Medical Biochemistry and Genetics, University of Turku, Kiinamyllynkatu 10, 20520, Turku, Finland
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22
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Kim YH, Baek NS, Han YH, Chung MA, Jung SD. Enhancement of neuronal cell adhesion by covalent binding of poly-d-lysine. J Neurosci Methods 2011; 202:38-44. [DOI: 10.1016/j.jneumeth.2011.08.036] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2011] [Revised: 08/23/2011] [Accepted: 08/23/2011] [Indexed: 11/29/2022]
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23
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Kim H, Cooke MJ, Shoichet MS. Creating permissive microenvironments for stem cell transplantation into the central nervous system. Trends Biotechnol 2011; 30:55-63. [PMID: 21831464 DOI: 10.1016/j.tibtech.2011.07.002] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2011] [Revised: 07/07/2011] [Accepted: 07/08/2011] [Indexed: 10/17/2022]
Abstract
Traumatic injury to the central nervous system (CNS) is highly debilitating, with the clinical need for regenerative therapies apparent. Neural stem/progenitor cells (NSPCs) are promising because they can repopulate lost or damaged cells and tissues. However, the adult CNS does not provide an optimal milieu for exogenous NSPCs to survive, engraft, differentiate, and integrate with host tissues. This review provides an overview of tissue engineering strategies to improve stem cell therapies by providing a defined microenvironment during transplantation. The use of biomaterials for physical support, growth factor delivery, and cellular co-transplantation are discussed. Providing the proper environment for stem cell survival and host tissue integration is crucial in realizing the full potential of these cells in CNS repair strategies.
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Affiliation(s)
- Howard Kim
- Institute of Medical Science, University of Toronto, Toronto, ON, Canada
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24
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Haastert-Talini K, Schaper-Rinkel J, Schmitte R, Bastian R, Mühlenhoff M, Schwarzer D, Draeger G, Su Y, Scheper T, Gerardy-Schahn R, Grothe C. In Vivo Evaluation of Polysialic Acid as Part of Tissue-Engineered Nerve Transplants. Tissue Eng Part A 2010; 16:3085-98. [DOI: 10.1089/ten.tea.2010.0180] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Affiliation(s)
- Kirsten Haastert-Talini
- Institute of Neuroanatomy, Hannover Medical School, Hannover, Germany
- Center for Systems Neurosciences (ZSN), Hannover, Germany
| | - Janett Schaper-Rinkel
- Institute of Neuroanatomy, Hannover Medical School, Hannover, Germany
- Center for Systems Neurosciences (ZSN), Hannover, Germany
| | - Ruth Schmitte
- Institute of Neuroanatomy, Hannover Medical School, Hannover, Germany
| | - Rode Bastian
- Institute of Technical Chemistry, University of Hannover, Hannover, Germany
| | - Martina Mühlenhoff
- Institute for Cellular Chemistry, Hannover Medical School, Hannover, Germany
| | - David Schwarzer
- Institute for Cellular Chemistry, Hannover Medical School, Hannover, Germany
| | - Gerald Draeger
- Institute of Organic Chemistry, University of Hannover, Hannover, Germany
| | - Yi Su
- Institute of Organic Chemistry, University of Hannover, Hannover, Germany
| | - Thomas Scheper
- Institute of Technical Chemistry, University of Hannover, Hannover, Germany
| | - Rita Gerardy-Schahn
- Center for Systems Neurosciences (ZSN), Hannover, Germany
- Institute for Cellular Chemistry, Hannover Medical School, Hannover, Germany
| | - Claudia Grothe
- Institute of Neuroanatomy, Hannover Medical School, Hannover, Germany
- Center for Systems Neurosciences (ZSN), Hannover, Germany
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25
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Su Y, Kasper C, Kirschning A, Dräger G, Berski S. Synthesis of New Polysialic Acid Derivatives. Macromol Biosci 2010; 10:1028-33. [DOI: 10.1002/mabi.201000094] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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26
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Steinhaus S, Stark Y, Bruns S, Haile Y, Scheper T, Grothe C, Behrens P. Polysialic acid immobilized on silanized glass surfaces: a test case for its use as a biomaterial for nerve regeneration. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2010; 21:1371-1378. [PMID: 20119645 DOI: 10.1007/s10856-009-3981-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/15/2009] [Accepted: 12/23/2009] [Indexed: 05/28/2023]
Abstract
The immobilization of polysialic acid (polySia) on glass substrates has been investigated with regard to the applicability of this polysaccharide as a novel, biocompatible and bioresorbable material for tissue engineering, especially with regard to its use in nerve regeneration. PolySia, a homopolymer of alpha-2,8-linked sialic acid, is involved in post-translational modification of the neural cell adhesion molecule (NCAM). The degradation of polySia can be controlled which makes it an interesting material for coating and for scaffold construction in tissue engineering. Here, we describe the immobilization of polySia on glass surfaces via an epoxysilane linker. Whereas glass surfaces will not actually be used in nerve regeneration scaffolds, they provide a simple and efficient means for testing various methods for the investigation of immobilized polySia. The modified surfaces were investigated with contact angle measurements and the quantity of immobilized polySia was examined by the thiobarbituric acid assay and a specific polySia-ELISA. The interactions between the polySia-modified surface and immortalized Schwann cells were evaluated via cell adhesion and cell viability assays. The results show that polySia can be immobilized on glass surfaces via the epoxysilane linker and that surface-bound polySia has no toxic effects on Schwann cells. Therefore, as a key substance in the development of vertebrates and as a favourable substrate for the cultivation of Schwann cells, it offers interesting features for the use in nerve guidance tubes for treatment of peripheral nerve injuries.
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Affiliation(s)
- Stephanie Steinhaus
- Institute of Inorganic Chemistry, Center for Solid-State Chemistry and New Materials, Leibniz University Hannover, Hannover, Germany
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27
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Galuska SP, Geyer H, Bleckmann C, Röhrich RC, Maass K, Bergfeld AK, Mühlenhoff M, Geyer R. Mass Spectrometric Fragmentation Analysis of Oligosialic and Polysialic Acids. Anal Chem 2010; 82:2059-66. [DOI: 10.1021/ac902809q] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sebastian P. Galuska
- Institute of Biochemistry, Faculty of Medicine, University of Giessen, Friedrichstrasse 24, D-35392 Giessen, Germany, and Institute of Cellular Chemistry, Medical School Hannover, Carl-Neuberg-Str. 1, D-30625 Hannover, Germany
| | - Hildegard Geyer
- Institute of Biochemistry, Faculty of Medicine, University of Giessen, Friedrichstrasse 24, D-35392 Giessen, Germany, and Institute of Cellular Chemistry, Medical School Hannover, Carl-Neuberg-Str. 1, D-30625 Hannover, Germany
| | - Christina Bleckmann
- Institute of Biochemistry, Faculty of Medicine, University of Giessen, Friedrichstrasse 24, D-35392 Giessen, Germany, and Institute of Cellular Chemistry, Medical School Hannover, Carl-Neuberg-Str. 1, D-30625 Hannover, Germany
| | - René C. Röhrich
- Institute of Biochemistry, Faculty of Medicine, University of Giessen, Friedrichstrasse 24, D-35392 Giessen, Germany, and Institute of Cellular Chemistry, Medical School Hannover, Carl-Neuberg-Str. 1, D-30625 Hannover, Germany
| | - Kai Maass
- Institute of Biochemistry, Faculty of Medicine, University of Giessen, Friedrichstrasse 24, D-35392 Giessen, Germany, and Institute of Cellular Chemistry, Medical School Hannover, Carl-Neuberg-Str. 1, D-30625 Hannover, Germany
| | - Anne K. Bergfeld
- Institute of Biochemistry, Faculty of Medicine, University of Giessen, Friedrichstrasse 24, D-35392 Giessen, Germany, and Institute of Cellular Chemistry, Medical School Hannover, Carl-Neuberg-Str. 1, D-30625 Hannover, Germany
| | - Martina Mühlenhoff
- Institute of Biochemistry, Faculty of Medicine, University of Giessen, Friedrichstrasse 24, D-35392 Giessen, Germany, and Institute of Cellular Chemistry, Medical School Hannover, Carl-Neuberg-Str. 1, D-30625 Hannover, Germany
| | - Rudolf Geyer
- Institute of Biochemistry, Faculty of Medicine, University of Giessen, Friedrichstrasse 24, D-35392 Giessen, Germany, and Institute of Cellular Chemistry, Medical School Hannover, Carl-Neuberg-Str. 1, D-30625 Hannover, Germany
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28
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Hildebrandt H, Mühlenhoff M, Gerardy-Schahn R. Polysialylation of NCAM. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2010; 663:95-109. [DOI: 10.1007/978-1-4419-1170-4_6] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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29
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Subramanian A, Krishnan UM, Sethuraman S. Development of biomaterial scaffold for nerve tissue engineering: Biomaterial mediated neural regeneration. J Biomed Sci 2009; 16:108. [PMID: 19939265 PMCID: PMC2790452 DOI: 10.1186/1423-0127-16-108] [Citation(s) in RCA: 329] [Impact Index Per Article: 21.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2009] [Accepted: 11/25/2009] [Indexed: 01/27/2023] Open
Abstract
Neural tissue repair and regeneration strategies have received a great deal of attention because it directly affects the quality of the patient's life. There are many scientific challenges to regenerate nerve while using conventional autologous nerve grafts and from the newly developed therapeutic strategies for the reconstruction of damaged nerves. Recent advancements in nerve regeneration have involved the application of tissue engineering principles and this has evolved a new perspective to neural therapy. The success of neural tissue engineering is mainly based on the regulation of cell behavior and tissue progression through the development of a synthetic scaffold that is analogous to the natural extracellular matrix and can support three-dimensional cell cultures. As the natural extracellular matrix provides an ideal environment for topographical, electrical and chemical cues to the adhesion and proliferation of neural cells, there exists a need to develop a synthetic scaffold that would be biocompatible, immunologically inert, conducting, biodegradable, and infection-resistant biomaterial to support neurite outgrowth. This review outlines the rationale for effective neural tissue engineering through the use of suitable biomaterials and scaffolding techniques for fabrication of a construct that would allow the neurons to adhere, proliferate and eventually form nerves.
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Affiliation(s)
- Anuradha Subramanian
- Center for Nanotechnology & Advanced Biomaterials, SASTRA University, Thanjavur, India.
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30
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Rao SS, Winter JO. Adhesion molecule-modified biomaterials for neural tissue engineering. FRONTIERS IN NEUROENGINEERING 2009; 2:6. [PMID: 19668707 PMCID: PMC2723915 DOI: 10.3389/neuro.16.006.2009] [Citation(s) in RCA: 70] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2009] [Accepted: 05/07/2009] [Indexed: 01/14/2023]
Abstract
Adhesion molecules (AMs) represent one class of biomolecules that promote central nervous system regeneration. These tethered molecules provide cues to regenerating neurons that recapitulate the native brain environment. Improving cell adhesive potential of non-adhesive biomaterials is therefore a common goal in neural tissue engineering. This review discusses common AMs used in neural biomaterials and the mechanism of cell attachment to these AMs. Methods to modify materials with AMs are discussed and compared. Additionally, patterning of AMs for achieving specific neuronal responses is explored.
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Affiliation(s)
- Shreyas S. Rao
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State UniversityColumbus, OH, USA
| | - Jessica O. Winter
- William G. Lowrie Department of Chemical and Biomolecular Engineering, The Ohio State UniversityColumbus, OH, USA
- Department of Biomedical Engineering, The Ohio State UniversityColumbus, OH, USA
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31
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Jungnickel J, Brämer C, Bronzlik P, Lipokatic-Takacs E, Weinhold B, Gerardy-Schahn R, Grothe C. Level and localization of polysialic acid is critical for early peripheral nerve regeneration. Mol Cell Neurosci 2008; 40:374-81. [PMID: 19138743 DOI: 10.1016/j.mcn.2008.12.003] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2008] [Revised: 11/21/2008] [Accepted: 12/11/2008] [Indexed: 12/31/2022] Open
Abstract
PolySia, the most striking post-translational modification of the neural cell adhesion molecule, is down-regulated during postnatal development. After peripheral nerve lesion, polySia is located on neuronal and glial cells normally not synthesizing polySia. However, structural consequences of reduced polySia content for peripheral nerve regeneration have not yet been clear. Furthermore, the contribution of sialyltransferases ST8SiaII and ST8SiaIV for the up-regulation of polySia has not been studied so far. In order to investigate the impact of polySia on regeneration processes of myelinated axons, we examined mouse mutants retaining only one functional sialyltransferase allele. In the absence of ST8SiaII, quantification of myelinated axons revealed a significant decrease in number and size of regenerated fibers without impairment of remyelination. In contrast, St8SiaIV deficiency resulted in increased fiber outgrowth and axonal maturation. Western blot analysis demonstrated that both ST8SiaII and St8SiaIV direct up-regulation of polySia. Cell-specific induction of polySia in myelinating Schwann cells and on regenerated axons in the presence of ST8SiaIV, but not ST8SiaII, indicates that not only the amount of polySia but also its cellular localization has a high impact on the regeneration progress of peripheral nerves.
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32
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Berski S, van Bergeijk J, Schwarzer D, Stark Y, Kasper C, Scheper T, Grothe C, Gerardy-Schahn R, Kirschning A, Dräger G. Synthesis and biological evaluation of a polysialic acid-based hydrogel as enzymatically degradable scaffold material for tissue engineering. Biomacromolecules 2008; 9:2353-9. [PMID: 18690740 DOI: 10.1021/bm800327s] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Restorative medicine has a constant need for improved scaffold materials. Degradable biopolymers often suffer from uncontrolled chemical or enzymatic hydrolysis by the host. The need for a second surgery on the other hand is a major drawback for nondegradable scaffold materials. In this paper we report the design and synthesis of a novel polysialic acid-based hydrogel with promising properties. Hydrogel synthesis was optimized and enzymatic degradation was studied using a phage-born endosialidase. After addition of endosialidase, hydrogels readily degraded depending on the amount of initially used cross-linker within 2 to 11 days. This polysialic acid hydrogel is not cytotoxic, completely stable under physiological conditions, and could be evaluated as growth support for PC12 cells. Here, additional coating with collagen I, poly-L-lysine or matrigel is mandatory to improve the properties of the material.
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Affiliation(s)
- Silke Berski
- Institut für Organische Chemie and Zentrum für Biomolekulare Wirkstoffe (BMWZ), Gottfried Willhelm Leibniz Universität Hannover, Schneiderberg 1B, 30167 Hannover, Germany
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33
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Hildebrandt H, Mühlenhoff M, Gerardy-Schahn R. WITHDRAWN: Polysialylation of NCAM. Neurochem Res 2008. [PMID: 18461443 DOI: 10.1007/s11064-008-9724-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/21/2008] [Indexed: 12/15/2022]
Affiliation(s)
- Herbert Hildebrandt
- Institute of Cellular Chemistry, Hannover Medical School, Carl-Neuberg-Strasse 1, 30625, Hannover, Germany
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