1
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Guiotto M, Clayton A, Morgan R, Raffoul W, Hart A, Riehle M, di Summa P. Biogelx-IKVAV Is An Innovative Human Platelet Lysate-Adipose-Derived Stem Cells Delivery Strategy to Improve Peripheral Nerve Repair. Tissue Eng Part A 2024. [PMID: 38482791 DOI: 10.1089/ten.tea.2023.0307] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/24/2024] Open
Abstract
Adipose-derived stem cells (ADSC) are nowadays one of the most exploited cells in regenerative medicine. They are fast growing, capable of enhancing axonal elongation, support and locally stimulate Schwann cells (SCs), and protect de-innervated muscles from atrophy after a peripheral nerve injury. With the aim of developing a bio-safe, clinically translatable cell-therapy, we assessed the effect of ADSC pre-expanded with human platelet lysate in an in vivo rat model, delivering the cells into a 15 mm critical-size sciatic nerve defect embedded within a laminin-peptide-functionalized hydrogel (Biogelx-IKVAV) wrapped by a poly-ɛ-caprolactone (PCL) nerve conduit. ADSC retained their stemness, their immunophenotype and proliferative activity when tested in vitro. At 6 weeks post-implantation, robust regeneration was observed across the critical-size gap as evaluated by both the axonal elongation (anti-NF 200) and SC proliferation (anti-S100) within the human ADSC-IKVAV filled PCL conduit. All the other experimental groups manifested significantly lower levels of growth cone elongation. The histological gastrocnemius muscle analysis was comparable with no quantitative significant differences among the experimental groups. Taken together, these results suggest that ADSC encapsulated in Biogelx-IKVAV are a potential path to improve the efficacy of nerve regeneration. New perspectives can be pursued for the development of a fully synthetic bioengineered nerve graft for the treatment of peripheral nerve injury.
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Affiliation(s)
- Martino Guiotto
- Department of Plastic, Reconstructive and Hand Surgery, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland
- Centre for the Cellular Microenvironment, University of Glasgow, Glasgow, United Kingdom
| | | | | | - Wassim Raffoul
- Department of Plastic, Reconstructive and Hand Surgery, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland
| | - Andrew Hart
- Centre for the Cellular Microenvironment, University of Glasgow, Glasgow, United Kingdom
- Canniesburn Plastic Surgery Unit, Glasgow Royal Infirmary, Glasgow, United Kingdom
| | - Mathis Riehle
- Centre for the Cellular Microenvironment, University of Glasgow, Glasgow, United Kingdom
| | - Pietro di Summa
- Department of Plastic, Reconstructive and Hand Surgery, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland
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2
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Tariq M, Khokhar R, Javed A, Usman M, Anjum SMM, Rasheed H, Bukhari NI, Yan C, Nawaz HA. Novel Hydrophilic Oligomer-Crosslinked Gelatin-Based Hydrogels for Biomedical Applications. Gels 2023; 9:564. [PMID: 37504443 PMCID: PMC10379017 DOI: 10.3390/gels9070564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 07/06/2023] [Accepted: 07/07/2023] [Indexed: 07/29/2023] Open
Abstract
Gelatin-based hydrogels have shown good injectability and biocompatibility and have been broadly used for drug delivery and tissue regeneration. However, their low mechanical strengths and fast degradation rates must be modified for long-term implantation applications. With an aim to develop mechanically stable hydrogels, reactive anhydride-based oligomers were developed and used to fabricate gelatin-based crosslinked hydrogels in this study. A cascade of hydrophilic oligomers containing reactive anhydride groups was synthesized by free radical polymerization. These oligomers varied in degree of reactivity, comonomer composition, and showed low molecular weights (Mn < 5 kDa). The reactive oligomers were utilized to fabricate hydrogels that differed in their mechanical strengths and degradation profiles. These formulations exhibited good cytocompatibility with human adipose tissue-derived stem cells (hADCs). In conclusion, the reactive MA-containing oligomers were successfully synthesized and utilized for the development of oligomer-crosslinked hydrogels. Such oligomer-crosslinked gelatin-based hydrogels hold promise as drug or cell carriers in various biomedical applications.
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Affiliation(s)
- Mamoona Tariq
- School of Pharmacy, Shanghai Jiao Tong University, Dongchuan Road 800, Minhang District, Shanghai 200240, China
| | - Rabia Khokhar
- Punjab University College of Pharmacy (PUCP), University of the Punjab, Lahore 54000, Pakistan
- Institute of Pharmaceutical Sciences (IPS), University of Veterinary & Animal Sciences (UVAS), Lahore 54000, Pakistan
| | - Arslan Javed
- Punjab University College of Pharmacy (PUCP), University of the Punjab, Lahore 54000, Pakistan
- Institute of Pharmaceutical Sciences (IPS), University of Veterinary & Animal Sciences (UVAS), Lahore 54000, Pakistan
| | - Muhammad Usman
- Institute of Pharmaceutical Sciences (IPS), University of Veterinary & Animal Sciences (UVAS), Lahore 54000, Pakistan
| | - Syed Muhammad Muneeb Anjum
- Institute of Pharmaceutical Sciences (IPS), University of Veterinary & Animal Sciences (UVAS), Lahore 54000, Pakistan
| | - Huma Rasheed
- Institute of Pharmaceutical Sciences (IPS), University of Veterinary & Animal Sciences (UVAS), Lahore 54000, Pakistan
| | - Nadeem Irfan Bukhari
- Punjab University College of Pharmacy (PUCP), University of the Punjab, Lahore 54000, Pakistan
| | - Chao Yan
- School of Pharmacy, Shanghai Jiao Tong University, Dongchuan Road 800, Minhang District, Shanghai 200240, China
| | - Hafiz Awais Nawaz
- Institute of Pharmaceutical Sciences (IPS), University of Veterinary & Animal Sciences (UVAS), Lahore 54000, Pakistan
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3
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Bousalis D, McCrary MW, Vaughn N, Hlavac N, Evering A, Kolli S, Song YH, Morley C, Angelini T, Schmidt CE. Decellularized peripheral nerve as an injectable delivery vehicle for neural applications. J Biomed Mater Res A 2022; 110:595-611. [PMID: 34590403 PMCID: PMC8742792 DOI: 10.1002/jbm.a.37312] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 09/14/2021] [Accepted: 09/16/2021] [Indexed: 12/17/2022]
Abstract
Damage to the nervous system can result in loss of sensory and motor function, paralysis, or even death. To facilitate neural regeneration and functional recovery, researchers have employed biomaterials strategies to address both peripheral and central nervous system injuries. Injectable hydrogels that recapitulate native nerve extracellular matrix are especially promising for neural tissue engineering because they offer more flexibility for minimally invasive applications and provide a growth-permissive substrate for neural cell types. Here, we explore the development of injectable hydrogels derived from decellularized rat peripheral nerves (referred to as "injectable peripheral nerve [iPN] hydrogels"), which are processed using a newly developed sodium deoxycholate and DNase (SDD) decellularization method. We assess the gelation kinetics, mechanical properties, cell bioactivity, and drug release kinetics of the iPN hydrogels. The iPN hydrogels thermally gel when exposed to 37°C in under 20 min and have mechanical properties similar to neural tissue. The hydrogels demonstrate in vitro biocompatibility through support of Schwann cell viability and metabolic activity. Additionally, iPN hydrogels promote greater astrocyte spreading compared to collagen I hydrogels. Finally, the iPN is a promising delivery vehicle of drug-loaded microparticles for a combinatorial approach to neural injury therapies.
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Affiliation(s)
- Deanna Bousalis
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL
| | - Michaela W. McCrary
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL
| | - Natalie Vaughn
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL
| | - Nora Hlavac
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL
| | - Ashley Evering
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL
| | - Shruti Kolli
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL
| | - Young Hye Song
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL,Department of Biomedical Engineering, University of Arkansas, Fayetteville, AR
| | - Cameron Morley
- Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL
| | - Thomas Angelini
- Department of Mechanical and Aerospace Engineering, University of Florida, Gainesville, FL
| | - Christine E. Schmidt
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL
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4
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Krieghoff J, Gronbach M, Schulz-Siegmund M, Hacker MC. Biodegradable macromers for implant bulk and surface engineering. Biol Chem 2021; 402:1357-1374. [PMID: 34433237 DOI: 10.1515/hsz-2021-0161] [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: 02/23/2021] [Accepted: 08/09/2021] [Indexed: 11/15/2022]
Abstract
Macromers, polymeric molecules with at least two functional groups for cross-polymerization, are interesting materials to tailor mechanical, biochemical and degradative bulk and surface properties of implants for tissue regeneration. In this review we focus on macromers with at least one biodegradable building block. Manifold design options, such as choice of polymeric block(s), optional core molecule and reactive groups, as well as cross-co-polymerization with suitable anchor or linker molecules, allow the adaptation of macromer-based biomaterials towards specific application requirements in both hard and soft tissue regeneration. Implants can be manufactured from macromers using additive manufacturing as well as molding and templating approaches. This review summarizes and discusses the overall concept of biodegradable macromers and recent approaches for macromer processing into implants as well as techniques for surface modification directed towards bone regeneration. These aspects are reviewed including a focus on the authors' contributions to the field through research within the collaborative research project Transregio 67.
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Affiliation(s)
- Jan Krieghoff
- Medical Faculty, Pharmaceutical Technology, Leipzig University, Eilenburger Str. 15A, D-04317 Leipzig, Germany.,Collaborative Research Center (SFB-TRR67) "Functional Biomaterials for Controlling Healing Processes in Bone and Skin - From Material Science to Clinical Application", Leipzig and Dresden, Germany
| | - Mathis Gronbach
- Medical Faculty, Pharmaceutical Technology, Leipzig University, Eilenburger Str. 15A, D-04317 Leipzig, Germany.,Collaborative Research Center (SFB-TRR67) "Functional Biomaterials for Controlling Healing Processes in Bone and Skin - From Material Science to Clinical Application", Leipzig and Dresden, Germany
| | - Michaela Schulz-Siegmund
- Medical Faculty, Pharmaceutical Technology, Leipzig University, Eilenburger Str. 15A, D-04317 Leipzig, Germany.,Collaborative Research Center (SFB-TRR67) "Functional Biomaterials for Controlling Healing Processes in Bone and Skin - From Material Science to Clinical Application", Leipzig and Dresden, Germany
| | - Michael C Hacker
- Medical Faculty, Pharmaceutical Technology, Leipzig University, Eilenburger Str. 15A, D-04317 Leipzig, Germany.,Collaborative Research Center (SFB-TRR67) "Functional Biomaterials for Controlling Healing Processes in Bone and Skin - From Material Science to Clinical Application", Leipzig and Dresden, Germany.,Institute of Pharmaceutics and Biopharmaceutics, Heinrich Heine University, Universitätsstrasse 1, D-40225 Düsseldorf, Germany
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5
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Meder T, Prest T, Skillen C, Marchal L, Yupanqui VT, Soletti L, Gardner P, Cheetham J, Brown BN. Nerve-specific extracellular matrix hydrogel promotes functional regeneration following nerve gap injury. NPJ Regen Med 2021; 6:69. [PMID: 34697304 PMCID: PMC8546053 DOI: 10.1038/s41536-021-00174-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Accepted: 09/14/2021] [Indexed: 01/24/2023] Open
Abstract
Nerve transection requires surgical intervention to restore function. The standard of care involves coaptation when a tension-free repair is achievable, or interposition of a graft or conduit when a gap remains. Despite advances, nerve gap injury is associated with unsatisfactory recovery. This study investigates the use of a decellularized, porcine nerve-derived hydrogel filler (peripheral nerve matrix, PNM) for conduits in an 8 mm rat sciatic nerve gap model. The decellularized tissue maintained multiple nerve-specific matrix components and nerve growth factors. This decellularized tissue was used to formulate hydrogels, which were deployed into conduits for nerve gap repair. Nerve recovery was assessed up to 24 weeks post injury by gait analysis, electrophysiology, and axon counting. Deployment of PNM within conduits was shown to improve electrophysiologic response and axon counts compared with those of empty conduit controls. These results indicate that PNM has potential benefits when used as a filler for conduits in nerve gap injuries.
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Affiliation(s)
- T Meder
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA.,Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, PA, USA
| | - T Prest
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA.,Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, PA, USA
| | - C Skillen
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA.,Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, PA, USA
| | - L Marchal
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA.,Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, PA, USA
| | - V T Yupanqui
- Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, PA, USA
| | | | - P Gardner
- Renerva, LLC, Pittsburgh, PA, USA.,Department of Neurological Surgery, University of Pittsburg School of Medicine, University of Pittsburgh, Pittsburgh, PA, USA
| | - J Cheetham
- Renerva, LLC, Pittsburgh, PA, USA.,Department of Clinical Sciences, Cornell College of Veterinary Medicine, Cornell University, Ithaca, NY, USA
| | - B N Brown
- McGowan Institute for Regenerative Medicine, University of Pittsburgh, Pittsburgh, PA, USA. .,Department of Bioengineering, Swanson School of Engineering, University of Pittsburgh, Pittsburgh, PA, USA. .,Renerva, LLC, Pittsburgh, PA, USA.
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6
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Nawaz HA, Schröck K, Schmid M, Krieghoff J, Maqsood I, Kascholke C, Kohn-Polster C, Schulz-Siegmund M, Hacker MC. Injectable oligomer-cross-linked gelatine hydrogels via anhydride-amine-conjugation. J Mater Chem B 2021; 9:2295-2307. [PMID: 33616150 DOI: 10.1039/d0tb02861d] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Injectable gelatine-based hydrogels are valuable tools for drug and cell delivery due to their extracellular matrix-like properties that can be adjusted by the degree of cross-linking. We have established anhydride-containing oligomers for the cross-linking of gelatine via anhydride-amine-conjugation. So far, this conversion required conditions not compatible with cell encapsulation or in vivo injection. In order to overcome this limitation, we developed an array of quarter-oligomers varying in comonomer composition and contents of reactive anhydride units reactive towards amine groups under physiological conditions. The oligomers were of low molecular weight (Mn < 5 kDa) with a high degree of chemically intact anhydrides. Chemical comonomer composition was determined by 1H-NMR. Dissolutions experiments confirmed improved hydrophilicity of the synthesized oligomers over our established compositions. Injectable formulations are described utilizing cytocompatible concentrations of constituent materials and proton-scavenging base. Degree of cross-linking and stiffness of injectable hydrogels were controlled by composition. The gels hold promise as injectable drug or cell carrier and as bioink.
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Affiliation(s)
- Hafiz Awais Nawaz
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany and Institute of Pharmaceutical Sciences (IPS), University of Veterinary & Animal Sciences (UVAS), Abdul Qadir Jillani road, Lahore, Pakistan
| | - Kathleen Schröck
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany
| | - Maximilian Schmid
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany
| | - Jan Krieghoff
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany
| | - Iram Maqsood
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany
| | - Christian Kascholke
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany
| | - Caroline Kohn-Polster
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany
| | - Michaela Schulz-Siegmund
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany
| | - Michael C Hacker
- Institute of Pharmacy, Pharmaceutical Technology, Leipzig University, Eilenburger Straße 15 a, 04317 Leipzig, Germany and Institute of Pharmaceutics and Biopharmaceutics, Heinrich-Heine-Universität, Universitätsstraße 1, Düsseldorf, 40225 Düsseldorf, Germany.
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7
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Krieghoff J, Rost J, Kohn-Polster C, Müller BM, Koenig A, Flath T, Schulz-Siegmund M, Schulze FP, Hacker MC. Extrusion-Printing of Multi-Channeled Two-Component Hydrogel Constructs from Gelatinous Peptides and Anhydride-Containing Oligomers. Biomedicines 2021; 9:biomedicines9040370. [PMID: 33916295 PMCID: PMC8065526 DOI: 10.3390/biomedicines9040370] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2021] [Revised: 03/27/2021] [Accepted: 03/29/2021] [Indexed: 01/22/2023] Open
Abstract
The performance of artificial nerve guidance conduits (NGC) in peripheral nerve regeneration can be improved by providing structures with multiple small channels instead of a single wide lumen. 3D-printing is a strategy to access such multi-channeled structures in a defined and reproducible way. This study explores extrusion-based 3D-printing of two-component hydrogels from a single cartridge printhead into multi-channeled structures under aseptic conditions. The gels are based on a platform of synthetic, anhydride-containing oligomers for cross-linking of gelatinous peptides. Stable constructs with continuous small channels and a variety of footprints and sizes were successfully generated from formulations containing either an organic or inorganic gelation base. The adjustability of the system was investigated by varying the cross-linking oligomer and substituting the gelation bases controlling the cross-linking kinetics. Formulations with organic N-methyl-piperidin-3-ol and inorganic K2HPO4 yielded hydrogels with comparable properties after manual processing and extrusion-based 3D-printing. The slower reaction kinetics of formulations with K2HPO4 can be beneficial for extending the time frame for printing. The two-component hydrogels displayed both slow hydrolytic and activity-dependent enzymatic degradability. Together with satisfying in vitro cell proliferation data, these results indicate the suitability of our cross-linked hydrogels as multi-channeled NGC for enhanced peripheral nerve regeneration.
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Affiliation(s)
- Jan Krieghoff
- Institute of Pharmacy, Pharmaceutical Technology, Faculty of Medicine, University of Leipzig, Eilenburger Straße 15a, 04317 Leipzig, Germany; (J.K.); (M.S.-S.)
| | - Johannes Rost
- Department of Mechanical and Energy Engineering, Leipzig University of Applied Sciences (HTWK Leipzig), Karl-Liebknecht-Straße 134, 04277 Leipzig, Germany; (T.F.); (F.-P.S.)
| | - Caroline Kohn-Polster
- Institute of Pharmacy, Pharmaceutical Technology, Faculty of Medicine, University of Leipzig, Eilenburger Straße 15a, 04317 Leipzig, Germany; (J.K.); (M.S.-S.)
| | - Benno M. Müller
- Institute of Pharmacy, Pharmaceutical Technology, Faculty of Medicine, University of Leipzig, Eilenburger Straße 15a, 04317 Leipzig, Germany; (J.K.); (M.S.-S.)
| | - Andreas Koenig
- Department of Prosthodontics and Materials Science, University of Leipzig, Liebigstraße 12, 04103 Leipzig, Germany;
| | - Tobias Flath
- Department of Mechanical and Energy Engineering, Leipzig University of Applied Sciences (HTWK Leipzig), Karl-Liebknecht-Straße 134, 04277 Leipzig, Germany; (T.F.); (F.-P.S.)
| | - Michaela Schulz-Siegmund
- Institute of Pharmacy, Pharmaceutical Technology, Faculty of Medicine, University of Leipzig, Eilenburger Straße 15a, 04317 Leipzig, Germany; (J.K.); (M.S.-S.)
| | - Fritz-Peter Schulze
- Department of Mechanical and Energy Engineering, Leipzig University of Applied Sciences (HTWK Leipzig), Karl-Liebknecht-Straße 134, 04277 Leipzig, Germany; (T.F.); (F.-P.S.)
| | - Michael C. Hacker
- Institute of Pharmacy, Pharmaceutical Technology, Faculty of Medicine, University of Leipzig, Eilenburger Straße 15a, 04317 Leipzig, Germany; (J.K.); (M.S.-S.)
- Institute of Pharmaceutics and Biopharmaceutics, Heinrich Heine University, Universitätsstraße 1, 40225 Düsseldorf, Germany
- Correspondence: ; Tel.: +49-211-81-14220
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8
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Roche-Molina M, Hardwick B, Sanchez-Ramos C, Sanz-Rosa D, Gewert D, Cruz FM, Gonzalez-Guerra A, Andres V, Palma JA, Ibanez B, Mckenzie G, Bernal JA. The pharmaceutical solvent N-methyl-2-pyrollidone (NMP) attenuates inflammation through Krüppel-like factor 2 activation to reduce atherogenesis. Sci Rep 2020; 10:11636. [PMID: 32669659 PMCID: PMC7363918 DOI: 10.1038/s41598-020-68350-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 06/19/2020] [Indexed: 12/25/2022] Open
Abstract
N-methyl-2-pyrrolidone (NMP) is a versatile water-miscible polar aprotic solvent. It is used as a drug solubilizer and penetration enhancer in human and animal, yet its bioactivity properties remain elusive. Here, we report that NMP is a bioactive anti-inflammatory compound well tolerated in vivo, that shows efficacy in reducing disease in a mouse model of atherosclerosis. Mechanistically, NMP increases the expression of the transcription factor Kruppel-like factor 2 (KLF2). Monocytes and endothelial cells treated with NMP express increased levels of KLF2, produce less pro-inflammatory cytokines and adhesion molecules. We found that NMP attenuates monocyte adhesion to endothelial cells inflamed with tumor necrosis factor alpha (TNF-α) by reducing expression of adhesion molecules. We further show using KLF2 shRNA that the inhibitory effect of NMP on endothelial inflammation and subsequent monocyte adhesion is KLF2 dependent. Enhancing KLF2 expression and activity improves endothelial function, controls multiple genes critical for inflammation, and prevents atherosclerosis. Our findings demonstrate a consistent effect of NMP upon KLF2 activation and inflammation, biological processes central to atherogenesis. Our data suggest that inclusion of bioactive solvent NMP in pharmaceutical compositions to treat inflammatory disorders might be beneficial and safe, in particular to treat diseases of the vascular system, such as atherosclerosis.
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Affiliation(s)
- Marta Roche-Molina
- Centro Nacional de Investigaciones Cardiovasculares (CNIC), Melchor Fernandez Almagro 3, CP28029, Madrid, Spain
| | - Bryn Hardwick
- MRC Cancer Unit At the University of Cambridge, Hutchison/MRC Research Centre, Box 197, Biomedical Campus, Hills Road, Cambridge, CB2 0XZ, UK
| | - Cristina Sanchez-Ramos
- Centro Nacional de Investigaciones Cardiovasculares (CNIC), Melchor Fernandez Almagro 3, CP28029, Madrid, Spain
| | - David Sanz-Rosa
- Centro Nacional de Investigaciones Cardiovasculares (CNIC), Melchor Fernandez Almagro 3, CP28029, Madrid, Spain.,CIBERCV, Madrid, Spain.,Department of Medicine, Universidad Europea de Madrid, Madrid, Spain
| | - Dirk Gewert
- DG Bioconsult Ltd, 50 Gilbert Road, Cambridge, CB4 3PE, UK
| | - Francisco M Cruz
- Centro Nacional de Investigaciones Cardiovasculares (CNIC), Melchor Fernandez Almagro 3, CP28029, Madrid, Spain
| | - Andres Gonzalez-Guerra
- Centro Nacional de Investigaciones Cardiovasculares (CNIC), Melchor Fernandez Almagro 3, CP28029, Madrid, Spain
| | - Vicente Andres
- Centro Nacional de Investigaciones Cardiovasculares (CNIC), Melchor Fernandez Almagro 3, CP28029, Madrid, Spain.,CIBERCV, Madrid, Spain
| | - Joaquin A Palma
- Department of Development, Grupo STIG, Velázquez 11, 28001, Madrid, CP, Spain
| | - Borja Ibanez
- Centro Nacional de Investigaciones Cardiovasculares (CNIC), Melchor Fernandez Almagro 3, CP28029, Madrid, Spain.,CIBERCV, Madrid, Spain.,IIS-Fundación Jiménez Díaz University Hospital, Madrid, Spain
| | - Grahame Mckenzie
- MRC Cancer Unit At the University of Cambridge, Hutchison/MRC Research Centre, Box 197, Biomedical Campus, Hills Road, Cambridge, CB2 0XZ, UK.
| | - Juan A Bernal
- Centro Nacional de Investigaciones Cardiovasculares (CNIC), Melchor Fernandez Almagro 3, CP28029, Madrid, Spain. .,CIBERCV, Madrid, Spain.
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9
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Zheng F, Li R, He Q, Koral K, Tao J, Fan L, Xiang R, Ma J, Wang N, Yin Y, Huang Z, Xu P, Xu H. The electrostimulation and scar inhibition effect of chitosan/oxidized hydroxyethyl cellulose/reduced graphene oxide/asiaticoside liposome based hydrogel on peripheral nerve regeneration in vitro. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 109:110560. [PMID: 32228996 DOI: 10.1016/j.msec.2019.110560] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2019] [Revised: 10/22/2019] [Accepted: 12/14/2019] [Indexed: 10/25/2022]
Abstract
The application of hollow nerve conduits in the repair of peripheral nerve defects is effected by inferior recovery, and nerve extension is hampered by the scar tissue generated during the repair process. In this study, the filler in hollow nerve conduit, chitosan/oxidized hydroxyethyl cellulose (CS/OHEC) hydrogel loaded asiaticoside liposome and the conductive reduced graphene oxide (rGO) were developed and used to reform the microenvironment for peripheral nerve regeneration. The physiochemical properties of CS/OHEC/rGO/asiaticoside liposome hydrogel were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and compressive modulus, porosity, swelling ratio, degradation and conductivity. In addition, the asiaticoside release profiles in vitro were investigated. The hydrogel had a continuous porous network structure with pore size distribution in the range of 50-250 μm. The majority of the hydrogels had porosities above 70%, and a compressive modulus of 0.45 MPa. The weight loss rate of hydrogel reached 76.14 ± 4.45% within 8 weeks. The conductivity of the hydrogel was 5.27 ± 0.42 × 10-4 S/cm. The hydrogel was non-toxic and suitable for adhesion and proliferation of nerve cells in vitro. In addition, the application of electrical stimulation after the addition of rGO can promote the differentiation and proliferation of nerve cells, accelerating nerve regeneration. The asiaticoside released from the hydrogel had a significant inhibitory effect on the growth and collagen secretion of fibroblasts, eliminating scars for regenerative nerves, which can promote the function recovery of defected peripheral nerve. Together, these positive results indicate that the hydrogel would be a promising candidate for peripheral nerve regeneration.
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Affiliation(s)
- Furong Zheng
- Department of Pharmaceutical Engineering, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
| | - Rui Li
- Department of Pharmaceutical Engineering, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
| | - Qundi He
- Wuhan Mafangshan Middle School, Wuhan 430070, China
| | - Kelly Koral
- Department of Pathology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Junyan Tao
- Department of Pathology, University of Pittsburgh, Pittsburgh, PA, USA
| | - Lihong Fan
- Department of Pharmaceutical Engineering, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
| | - Runzhi Xiang
- Department of Pharmaceutical Engineering, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
| | - Jingyao Ma
- Department of Pharmaceutical Engineering, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
| | - Na Wang
- Department of Pharmaceutical Engineering, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
| | - Yixia Yin
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, China
| | - Zhijun Huang
- Department of Pharmaceutical Engineering, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China
| | - Peihu Xu
- Department of Pharmaceutical Engineering, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China.
| | - Haixing Xu
- Department of Pharmaceutical Engineering, School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, Wuhan 430070, China; Wuhan Kanghua Century Pharmaceutical Limited Company, Wuhan 430070, China.
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10
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Manoukian OS, Baker JT, Rudraiah S, Arul MR, Vella AT, Domb AJ, Kumbar SG. Functional polymeric nerve guidance conduits and drug delivery strategies for peripheral nerve repair and regeneration. J Control Release 2019; 317:78-95. [PMID: 31756394 DOI: 10.1016/j.jconrel.2019.11.021] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 10/16/2019] [Accepted: 11/18/2019] [Indexed: 12/25/2022]
Abstract
Peripheral nerve injuries can be extremely debilitating, resulting in sensory and motor loss-of-function. Endogenous repair is limited to non-severe injuries in which transection of nerves necessitates surgical intervention. Traditional treatment approaches include the use of biological grafts and alternative engineering approaches have made progress. The current article serves as a comprehensive, in-depth perspective on peripheral nerve regeneration, particularly nerve guidance conduits and drug delivery strategies. A detailed background of peripheral nerve injury and repair pathology, and an in-depth look into augmented nerve regeneration, nerve guidance conduits, and drug delivery strategies provide a state-of-the-art perspective on the field.
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Affiliation(s)
- Ohan S Manoukian
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT, USA; Department of Orthopedic Surgery, University of Connecticut Health, Farmington, CT, USA
| | - Jiana T Baker
- Department of Orthopedic Surgery, University of Connecticut Health, Farmington, CT, USA
| | - Swetha Rudraiah
- Department of Orthopedic Surgery, University of Connecticut Health, Farmington, CT, USA; Department of Pharmaceutical Sciences, University of Saint Joseph, Hartford, CT, USA
| | - Michael R Arul
- Department of Orthopedic Surgery, University of Connecticut Health, Farmington, CT, USA
| | - Anthony T Vella
- Department of Department of Immunology, University of Connecticut Health, Farmington, CT, USA
| | - Abraham J Domb
- Institute of Drug Research, School of Pharmacy, Faculty of Medicine, The Hebrew University of Jerusalem, Jerusalem 91120, Israel
| | - Sangamesh G Kumbar
- Department of Biomedical Engineering, University of Connecticut, Storrs, CT, USA; Department of Orthopedic Surgery, University of Connecticut Health, Farmington, CT, USA.
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11
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McAvoy M, Tsosie JK, Vyas KN, Khan OF, Sadtler K, Langer R, Anderson DG. Flexible Multielectrode Array for Skeletal Muscle Conditioning, Acetylcholine Receptor Stabilization and Epimysial Recording After Critical Peripheral Nerve Injury. Am J Cancer Res 2019; 9:7099-7107. [PMID: 31660089 PMCID: PMC6815960 DOI: 10.7150/thno.35436] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2019] [Accepted: 08/01/2019] [Indexed: 01/24/2023] Open
Abstract
Complete re-innervation after a traumatic injury severing a muscle's peripheral nerve may take years. During this time, the denervated muscle atrophies and loses acetylcholine receptors, a vital component of the neuromuscular junction, limiting functional recovery. One common clinical treatment for atrophy is electrical stimulation; however, epimysial electrodes currently used are bulky and often fail due to an excessive inflammatory response. Additionally, there remains a need for a device providing in vivo monitoring of neuromuscular regeneration and the maintenance of acetylcholine receptors. Here, an implantable, flexible microelectrode array (MEA) was developed that provides surface neuromuscular stimulation and recording during long-term denervation. Methods: The MEA uses a flexible polyimide elastomer and an array of gold-based microelectrodes featuring Peano curve motifs, which together maintain electrode flexibility. The devices were implanted along the denervated gastrocnemius muscles of 5 rats. These rats underwent therapeutic stimulation using the MEA daily beginning on post-operative day 2. Another 5 rats underwent tibial nerve resection without implantation of MEA. Tissues were harvested on post-operative day 14 and evaluated for quantification of acetylcholine receptors and muscle fiber area using immunofluorescence and histological staining. Results: The Young's modulus was 1.67 GPa, which is comparable to native tendon and muscle. The devices successfully recorded electromyogram data when implanted in rats. When compared to untreated denervated muscles, MEA therapy attenuated atrophy by maintaining larger muscle fiber cross-sectional areas (p < 0.05). Furthermore, the acetylcholine receptor areas were markedly larger with MEA treatment (p < 0.05). Conclusions: This proof-of-concept work successfully demonstrates the ability to combine conformability, tensile strength-enhancing metal micropatterning, electrical stimulation and recording into a functional implant for both epimysial stimulation and recording.
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12
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Faroni A, Workman VL, Saiani A, Reid AJ. Self-Assembling Peptide Hydrogel Matrices Improve the Neurotrophic Potential of Human Adipose-Derived Stem Cells. Adv Healthc Mater 2019; 8:e1900410. [PMID: 31348622 DOI: 10.1002/adhm.201900410] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 07/09/2019] [Indexed: 12/20/2022]
Abstract
Despite advances in microsurgical techniques, treatment options to restore prior function following peripheral nerve injury remain unavailable, and autologous nerve grafting remains the therapy of choice. Recent experimental work has focused on the development of artificial constructs incorporating smart biomaterials and stem cells, aspiring to match/improve the outcomes of nerve autografting. Chemically stimulated human adipose-derived stem cells (dhASC) can improve nerve regeneration outcomes; however, these properties are lost when chemical stimulation is withdrawn, and survival rate upon transplantation is low. It is hypothesized that interactions with synthetic hydrogel matrices could maintain and improve neurotrophic characteristics of dhASC. dhASC are cultured on PeptiGel-Alpha 1 and PeptiGel-Alpha 2 self-assembling peptide hydrogels, showing comparable viability to collagen I control gels. Culturing dhASC on Alpha 1 and Alpha 2 substrates allow the maintenance of neurotrophic features, such as the expression of growth factors and neuroglial markers. Both Alpha 1 and Alpha 2 substrates are suitable for the culture of peripheral sensory neurons, permitting sprouting of neuronal extensions without the need of biological extracellular matrices, and preserving neuronal function. PeptiGel substrates loaded with hdASC are proposed as promising candidates for the development of tissue engineering therapies for the repair of peripheral nerve injuries.
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Affiliation(s)
- Alessandro Faroni
- Blond McIndoe LaboratoriesDivision of Cell Matrix Biology and Regenerative MedicineSchool of Biological SciencesFaculty of Biology Medicine and HealthUniversity of ManchesterManchester Academic Health Science Centre Manchester M13 9PL UK
| | - Victoria L. Workman
- School of Materials & Manchester Institute of BiotechnologyFaculty of Science and EngineeringUniversity of Manchester Manchester M13 9PL UK
| | - Alberto Saiani
- School of Materials & Manchester Institute of BiotechnologyFaculty of Science and EngineeringUniversity of Manchester Manchester M13 9PL UK
| | - Adam J. Reid
- Blond McIndoe LaboratoriesDivision of Cell Matrix Biology and Regenerative MedicineSchool of Biological SciencesFaculty of Biology Medicine and HealthUniversity of ManchesterManchester Academic Health Science Centre Manchester M13 9PL UK
- Department of Plastic Surgery & BurnsWythenshawe HospitalManchester University NHS Foundation TrustManchester Academic Health Science Centre Manchester M23 9LT UK
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13
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Gnavi S, Morano M, Fornasari BE, Riccobono C, Tonda-Turo C, Zanetti M, Ciardelli G, Gambarotta G, Perroteau I, Geuna S, Raimondo S. Combined Influence of Gelatin Fibre Topography and Growth Factors on Cultured Dorsal Root Ganglia Neurons. Anat Rec (Hoboken) 2018; 301:1668-1677. [DOI: 10.1002/ar.23846] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2017] [Revised: 01/26/2018] [Accepted: 02/12/2018] [Indexed: 12/12/2022]
Affiliation(s)
- Sara Gnavi
- Neuroscience Institute of the Cavalieri-Ottolenghi Foundation; University of Torino; Orbassano 10043 Italy
| | - Michela Morano
- Neuroscience Institute of the Cavalieri-Ottolenghi Foundation; University of Torino; Orbassano 10043 Italy
- Department of Clinical and Biological Sciences; University of Torino; Orbassano 10043 Italy
| | - Benedetta Elena Fornasari
- Neuroscience Institute of the Cavalieri-Ottolenghi Foundation; University of Torino; Orbassano 10043 Italy
- Department of Clinical and Biological Sciences; University of Torino; Orbassano 10043 Italy
| | - Claudio Riccobono
- Neuroscience Institute of the Cavalieri-Ottolenghi Foundation; University of Torino; Orbassano 10043 Italy
| | - Chiara Tonda-Turo
- Department of Mechanical and Aerospace Engineering; Politecnico of Torino; Torino 10100 Italy
| | - Marco Zanetti
- Nanostructured Interfaces and Surfaces, Department of Chemistry; University of Torino; Torino 10100 Italy
| | - Gianluca Ciardelli
- Department of Mechanical and Aerospace Engineering; Politecnico of Torino; Torino 10100 Italy
| | - Giovanna Gambarotta
- Department of Clinical and Biological Sciences; University of Torino; Orbassano 10043 Italy
| | - Isabelle Perroteau
- Department of Clinical and Biological Sciences; University of Torino; Orbassano 10043 Italy
| | - Stefano Geuna
- Neuroscience Institute of the Cavalieri-Ottolenghi Foundation; University of Torino; Orbassano 10043 Italy
- Department of Clinical and Biological Sciences; University of Torino; Orbassano 10043 Italy
| | - Stefania Raimondo
- Neuroscience Institute of the Cavalieri-Ottolenghi Foundation; University of Torino; Orbassano 10043 Italy
- Department of Clinical and Biological Sciences; University of Torino; Orbassano 10043 Italy
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