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Tang SN, Salazar-Puerta AI, Heimann MK, Kuchynsky K, Rincon-Benavides MA, Kordowski M, Gunsch G, Bodine L, Diop K, Gantt C, Khan S, Bratasz A, Kokiko-Cochran O, Fitzgerald J, Laudier DM, Hoyland JA, Walter BA, Higuita-Castro N, Purmessur D. Engineered extracellular vesicle-based gene therapy for the treatment of discogenic back pain. Biomaterials 2024; 308:122562. [PMID: 38583365 DOI: 10.1016/j.biomaterials.2024.122562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Revised: 02/23/2024] [Accepted: 03/31/2024] [Indexed: 04/09/2024]
Abstract
Painful musculoskeletal disorders such as intervertebral disc (IVD) degeneration associated with chronic low back pain (termed "Discogenic back pain", DBP), are a significant socio-economic burden worldwide and contribute to the growing opioid crisis. Yet there are very few if any successful interventions that can restore the tissue's structure and function while also addressing the symptomatic pain. Here we have developed a novel non-viral gene therapy, using engineered extracellular vesicles (eEVs) to deliver the developmental transcription factor FOXF1 to the degenerated IVD in an in vivo model. Injured IVDs treated with eEVs loaded with FOXF1 demonstrated robust sex-specific reductions in pain behaviors compared to control groups. Furthermore, significant restoration of IVD structure and function in animals treated with FOXF1 eEVs were observed, with significant increases in disc height, tissue hydration, proteoglycan content, and mechanical properties. This is the first study to successfully restore tissue function while modulating pain behaviors in an animal model of DBP using eEV-based non-viral delivery of transcription factor genes. Such a strategy can be readily translated to other painful musculoskeletal disorders.
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Affiliation(s)
- Shirley N Tang
- Department of Biomedical Engineering, College of Engineering, The Ohio State University, USA
| | - Ana I Salazar-Puerta
- Department of Biomedical Engineering, College of Engineering, The Ohio State University, USA
| | - Mary K Heimann
- Department of Biomedical Engineering, College of Engineering, The Ohio State University, USA
| | - Kyle Kuchynsky
- Department of Biomedical Engineering, College of Engineering, The Ohio State University, USA
| | | | - Mia Kordowski
- Biophysics Graduate Program, The Ohio State University, USA
| | - Gilian Gunsch
- Department of Biomedical Engineering, College of Engineering, The Ohio State University, USA
| | - Lucy Bodine
- Department of Mechanical Engineering, College of Engineering, The Ohio State University, USA
| | - Khady Diop
- Department of Biology, College of Arts and Sciences, The Ohio State University, USA
| | - Connor Gantt
- Department of Biomedical Engineering, College of Engineering, The Ohio State University, USA
| | - Safdar Khan
- Department of Orthopedics, The Ohio State University Wexner Medical Center, USA
| | - Anna Bratasz
- Small Animal Imaging Center Shared Resources, Wexner Medical Center, USA
| | - Olga Kokiko-Cochran
- Department of Neuroscience, The Ohio State University, USA; Institute for Behavioral Medicine Research, Neurological Institute, The Ohio State University, USA
| | - Julie Fitzgerald
- Department of Neuroscience, The Ohio State University, USA; Institute for Behavioral Medicine Research, Neurological Institute, The Ohio State University, USA
| | - Damien M Laudier
- Leni and Peter W. May Department of Orthopaedics, Icahn School of Medicine at Mount Sinai, USA
| | - Judith A Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, The University of Manchester, Manchester, UK; NIHR Manchester Musculoskeletal Biomedical Research Centre, Manchester University, NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK
| | - Benjamin A Walter
- Department of Biomedical Engineering, College of Engineering, The Ohio State University, USA; Department of Orthopedics, The Ohio State University Wexner Medical Center, USA
| | - Natalia Higuita-Castro
- Department of Biomedical Engineering, College of Engineering, The Ohio State University, USA; Biophysics Graduate Program, The Ohio State University, USA; Department of Neurosurgery, The Ohio State University, USA; Dorothy M. Davis Heart and Lung Research Institute, The Ohio State University, USA.
| | - Devina Purmessur
- Department of Biomedical Engineering, College of Engineering, The Ohio State University, USA; Department of Orthopedics, The Ohio State University Wexner Medical Center, USA.
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2
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Gilbert HTJ, Wignall FEJ, Zeef L, Hoyland JA, Richardson SM. Transcriptomic profiling reveals key early response genes during GDF6-mediated differentiation of human adipose-derived stem cells to nucleus pulposus cells. JOR Spine 2024; 7:e1315. [PMID: 38249721 PMCID: PMC10797253 DOI: 10.1002/jsp2.1315] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 12/12/2023] [Accepted: 12/18/2023] [Indexed: 01/23/2024] Open
Abstract
Background Stem cell-based therapies show promise as a means of repairing the degenerate intervertebral disc, with growth factors often used alongside cells to help direct differentiation toward a nucleus pulposus (NP)-like phenotype. We previously demonstrated adipose-derived stem cell (ASC) differentiation with GDF6 as optimal for generating NP-like cells through evaluating end-stage differentiation parameters. Here we conducted a time-resolved transcriptomic characterization of ASCs response to GDF6 stimulation to understand the early drivers of differentiation to NP-like cells. Methods Human ASCs were treated with recombinant human GDF6 for 2, 6, and 12 h. RNA sequencing and detailed bioinformatic analysis were used to assess differential gene expression, gene ontology (GO), and transcription factor involvement during early differentiation. Quantitative polymerase chain reaction (qPCR) was used to validate RNA sequencing findings and inhibitors used to interrogate Smad and Erk signaling pathways, as well as identify primary and secondary response genes. Results The transcriptomic response of ASCs to GDF6 stimulation was time-resolved and highly structured, with "cell differentiation" "developmental processes," and "response to stimulus" identified as key biological process GO terms. The transcription factor ERG1 was identified as a key early response gene. Temporal cluster analysis of differentiation genes identified positive regulation NP cell differentiation, as well as inhibition of osteogenesis and adipogenesis. A role for Smad and Erk signaling in the regulation of GDF6-induced early gene expression response was observed and both primary and secondary response genes were identified. Conclusions This study identifies a multifactorial early gene response that contributes to lineage commitment, with the identification of a number of potentially useful early markers of differentiation of ASCs to NP cells. This detailed insight into the molecular processes in response to GDF6 stimulation of ASCs is important for the development of an efficient and efficacious cell-based therapy for intervertebral disc degeneration-associated back pain.
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Affiliation(s)
- Hamish T. J. Gilbert
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and HealthUniversity of Manchester, Manchester Academic Health Sciences CentreManchesterUK
| | - Francis E. J. Wignall
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and HealthUniversity of Manchester, Manchester Academic Health Sciences CentreManchesterUK
| | - Leo Zeef
- Bioinformatics Core Facility, Faculty of Biology, Medicine & HealthUniversity of ManchesterManchesterUK
| | - Judith A. Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and HealthUniversity of Manchester, Manchester Academic Health Sciences CentreManchesterUK
| | - Stephen M. Richardson
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and HealthUniversity of Manchester, Manchester Academic Health Sciences CentreManchesterUK
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3
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Vitale M, Ligorio C, Richardson SM, Hoyland JA, Bella J. Collagen-like Osteoclast-Associated Receptor (OSCAR)-Binding Motifs Show a Co-Stimulatory Effect on Osteoclastogenesis in a Peptide Hydrogel System. Int J Mol Sci 2023; 25:445. [PMID: 38203618 PMCID: PMC10779143 DOI: 10.3390/ijms25010445] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 12/19/2023] [Accepted: 12/25/2023] [Indexed: 01/12/2024] Open
Abstract
Osteoclastogenesis, one of the dynamic pathways underlying bone remodelling, is a complex process that includes many stages. This complexity, while offering a wealth of therapeutic opportunities, represents a substantial challenge in unravelling the underlying mechanisms. As such, there is a high demand for robust model systems to understand osteoclastogenesis. Hydrogels seeded with osteoclast precursors and decorated with peptides or proteins mimicking bone's extracellular matrix could provide a useful synthetic tool to study pre-osteoclast-matrix interactions and their effect on osteoclastogenesis. For instance, fibrillar collagens have been shown to provide a co-stimulatory pathway for osteoclastogenesis through interaction with the osteoclast-associated receptor (OSCAR), a regulator of osteoclastogenesis expressed on the surface of pre-osteoclast cells. Based on this rationale, here we design two OSCAR-binding peptides and one recombinant OSCAR-binding protein, and we combine them with peptide-based hydrogels to study their effect on osteoclastogenesis. The OSCAR-binding peptides adopt the collagen triple-helical conformation and interact with OSCAR, as shown by circular dichroism spectropolarimetry and surface plasmon resonance. Furthermore, they have a positive effect on osteoclastogenesis, as demonstrated by appropriate gene expression and tartrate-resistant acid phosphatase staining typical of osteoclast formation. Combination of the OSCAR-binding peptides or the OSCAR-binding recombinant protein with peptide-based hydrogels enhances osteoclast differentiation when compared to the non-modified hydrogels, as demonstrated by multi-nucleation and by F-actin staining showing a characteristic osteoclast-like morphology. We envisage that these hydrogels could be used as a platform to study osteoclastogenesis and, in particular, to investigate the effect of costimulatory pathways involving OSCAR.
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Affiliation(s)
| | | | | | | | - Jordi Bella
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester M13 9PT, UK; (M.V.); (C.L.); (S.M.R.); (J.A.H.)
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4
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Dudek M, Pathiranage DRJ, Bano-Otalora B, Paszek A, Rogers N, Gonçalves CF, Lawless C, Wang D, Luo Z, Yang L, Guilak F, Hoyland JA, Meng QJ. Mechanical loading and hyperosmolarity as a daily resetting cue for skeletal circadian clocks. Nat Commun 2023; 14:7237. [PMID: 37963878 PMCID: PMC10646113 DOI: 10.1038/s41467-023-42056-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Accepted: 09/28/2023] [Indexed: 11/16/2023] Open
Abstract
Daily rhythms in mammalian behaviour and physiology are generated by a multi-oscillator circadian system entrained through environmental cues (e.g. light and feeding). The presence of tissue niche-dependent physiological time cues has been proposed, allowing tissues the ability of circadian phase adjustment based on local signals. However, to date, such stimuli have remained elusive. Here we show that daily patterns of mechanical loading and associated osmotic challenge within physiological ranges reset circadian clock phase and amplitude in cartilage and intervertebral disc tissues in vivo and in tissue explant cultures. Hyperosmolarity (but not hypo-osmolarity) resets clocks in young and ageing skeletal tissues and induce genome-wide expression of rhythmic genes in cells. Mechanistically, RNAseq and biochemical analysis revealed the PLD2-mTORC2-AKT-GSK3β axis as a convergent pathway for both in vivo loading and hyperosmolarity-induced clock changes. These results reveal diurnal patterns of mechanical loading and consequent daily oscillations in osmolarity as a bona fide tissue niche-specific time cue to maintain skeletal circadian rhythms in sync.
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Affiliation(s)
- Michal Dudek
- Wellcome Centre for Cell Matrix Research, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, UK
- Centre for Biological Timing, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, UK
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK
| | - Dharshika R J Pathiranage
- Wellcome Centre for Cell Matrix Research, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, UK
- Centre for Biological Timing, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, UK
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK
| | - Beatriz Bano-Otalora
- Centre for Biological Timing, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, UK
| | - Anna Paszek
- Wellcome Centre for Cell Matrix Research, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, UK
- Centre for Biological Timing, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, UK
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK
| | - Natalie Rogers
- Wellcome Centre for Cell Matrix Research, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, UK
- Centre for Biological Timing, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, UK
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK
| | - Cátia F Gonçalves
- Wellcome Centre for Cell Matrix Research, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, UK
- Centre for Biological Timing, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, UK
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK
| | - Craig Lawless
- Wellcome Centre for Cell Matrix Research, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, UK
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK
| | - Dong Wang
- Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Zhuojing Luo
- Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Liu Yang
- Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Farshid Guilak
- Department of Orthopedic Surgery and Department of Biomedical Engineering, Center of Regenerative Medicine, Washington University, St. Louis, MO, 63110, USA
- Shriners Hospitals for Children - St. Louis, St. Louis, MO, 63110, USA
| | - Judith A Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK.
- NIHR Manchester Biomedical Research Centre, Central Manchester Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK.
| | - Qing-Jun Meng
- Wellcome Centre for Cell Matrix Research, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, UK.
- Centre for Biological Timing, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, UK.
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK.
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5
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Williams RJ, Laagland LT, Bach FC, Ward L, Chan W, Tam V, Medzikovic A, Basatvat S, Paillat L, Vedrenne N, Snuggs JW, Poramba-Liyanage DW, Hoyland JA, Chan D, Camus A, Richardson SM, Tryfonidou MA, Le Maitre CL. Recommendations for intervertebral disc notochordal cell investigation: From isolation to characterization. JOR Spine 2023; 6:e1272. [PMID: 37780826 PMCID: PMC10540834 DOI: 10.1002/jsp2.1272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Revised: 06/16/2023] [Accepted: 06/21/2023] [Indexed: 10/03/2023] Open
Abstract
Background Lineage-tracing experiments have established that the central region of the mature intervertebral disc, the nucleus pulposus (NP), develops from the embryonic structure called "the notochord". However, changes in the cells derived from the notochord which form the NP (i.e., notochordal cells [NCs]), in terms of their phenotype and functional identity from early developmental stages to skeletal maturation are less understood. These key issues require further investigation to better comprehend the role of NCs in homeostasis and degeneration as well as their potential for regeneration. Progress in utilizing NCs is currently hampered due to poor consistency and lack of consensus methodology for in vitro NC extraction, manipulation, and characterization. Methods Here, an international group has come together to provide key recommendations and methodologies for NC isolation within key species, numeration, in vitro manipulation and culture, and characterization. Results Recommeded protocols are provided for isolation and culture of NCs. Experimental testing provided recommended methodology for numeration of NCs. The issues of cryopreservation are demonstrated, and a pannel of immunohistochemical markers are provided to inform NC characterization. Conclusions Together we hope this article provides a road map for in vitro studies of NCs to support advances in research into NC physiology and their potential in regenerative therapies.
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Affiliation(s)
- Rebecca J Williams
- Department of Oncology and Metabolism Medical School, The University of Sheffield Sheffield UK
- Biomolecular Sciences Research Centre Sheffield Hallam University Sheffield UK
| | - Lisanne T Laagland
- Department of Clinical Sciences Faculty of Veterinary Medicine, Utrecht University Utrecht The Netherlands
| | - Frances C Bach
- Department of Clinical Sciences Faculty of Veterinary Medicine, Utrecht University Utrecht The Netherlands
| | - Lizzy Ward
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health The University of Manchester Manchester UK
| | - Wilson Chan
- School of Biomedical Sciences The University of Hong Kong Pokfulam Hong Kong China
| | - Vivian Tam
- School of Biomedical Sciences The University of Hong Kong Pokfulam Hong Kong China
| | - Adel Medzikovic
- Department of Clinical Sciences Faculty of Veterinary Medicine, Utrecht University Utrecht The Netherlands
| | - Shaghayegh Basatvat
- Department of Oncology and Metabolism Medical School, The University of Sheffield Sheffield UK
- Biomolecular Sciences Research Centre Sheffield Hallam University Sheffield UK
| | - Lily Paillat
- Regenerative Medicine and Skeleton, RMeS Nantes Université, Oniris, CHU Nantes, INSERM, UMR 1229 Nantes France
| | - Nicolas Vedrenne
- Regenerative Medicine and Skeleton, RMeS Nantes Université, Oniris, CHU Nantes, INSERM, UMR 1229 Nantes France
| | - Joseph W Snuggs
- Department of Oncology and Metabolism Medical School, The University of Sheffield Sheffield UK
- Biomolecular Sciences Research Centre Sheffield Hallam University Sheffield UK
| | - Deepani W Poramba-Liyanage
- Department of Clinical Sciences Faculty of Veterinary Medicine, Utrecht University Utrecht The Netherlands
| | - Judith A Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health The University of Manchester Manchester UK
- NIHR Manchester Biomedical Research Centre Central Manchester Foundation Trust, Manchester Academic Health Science Centre Manchester UK
| | - Danny Chan
- School of Biomedical Sciences The University of Hong Kong Pokfulam Hong Kong China
| | - Anne Camus
- Regenerative Medicine and Skeleton, RMeS Nantes Université, Oniris, CHU Nantes, INSERM, UMR 1229 Nantes France
| | - Stephen M Richardson
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health The University of Manchester Manchester UK
| | - Marianna A Tryfonidou
- Department of Clinical Sciences Faculty of Veterinary Medicine, Utrecht University Utrecht The Netherlands
| | - Christine L Le Maitre
- Department of Oncology and Metabolism Medical School, The University of Sheffield Sheffield UK
- Biomolecular Sciences Research Centre Sheffield Hallam University Sheffield UK
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6
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Wang X, Adlam DJ, Wang R, Altujjar A, Jia Z, Saunders JM, Hoyland JA, Rai N, Saunders BR. Injectable Colloidal Hydrogels of N-Vinylformamide Microgels Dispersed in Covalently Interlinked pH-Responsive Methacrylic Acid-Based Microgels. Biomacromolecules 2023; 24:2173-2183. [PMID: 37026759 PMCID: PMC10170504 DOI: 10.1021/acs.biomac.3c00058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
Abstract
Injectable hydrogels offer great potential to augment damaged or degenerated soft tissues. A key criterion for such gels is that their modulus is as close as possible to that of the target tissue. The majority of synthetic hydrogels have used low molecular weight polymer chains which may cause problems if they diffuse away from the injection site and/or increase the local osmotic pressure. We previously introduced a different approach of injecting preformed ultra-high molecular weight pH-responsive microgels (MGs) that interlink to form hydrogels. MGs are crosslinked polymer colloid particles that swell when the pH approaches the particle pKa. These colloidal hydrogels are termed doubly crosslinked microgels (DX MGs). The gel moduli of previous DX MGs were much greater than that reported for human nucleus pulposus (NP) tissue of the spinal intervertebral disk. Here, we replace some of the pH-responsive poly(ethyl acrylate-co-methacrylic acid) (PEA-MAA) MGs with hydrophilic non-ionic MGs based on poly(N-vinylformamide) (NVF). We investigate the morphology and mechanical properties of these new injectable composite DX MGs and show that the mechanical properties can be tuned by systematically varying the NVF MG content. Using this approach, the gel moduli close to that for NP tissue are achieved. These injectable new pH-responsive gels exhibit low cytotoxicity. Our work provides a potential new system for minimally invasive intervertebral disk augmentation.
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Affiliation(s)
- Xuelian Wang
- School of Materials, University of Manchester, MECD Building A, Manchester M1 7HL, U.K
| | - Daman J Adlam
- Division of Cell Matrix Biology and Regenerative Medicine, The University of Manchester, Oxford Road, Manchester M13 9PT, U.K
| | - Ran Wang
- School of Materials, University of Manchester, MECD Building A, Manchester M1 7HL, U.K
| | - Amal Altujjar
- School of Materials, University of Manchester, MECD Building A, Manchester M1 7HL, U.K
| | - Zhenyu Jia
- School of Materials, University of Manchester, MECD Building A, Manchester M1 7HL, U.K
| | - Jennifer M Saunders
- School of Materials, University of Manchester, MECD Building A, Manchester M1 7HL, U.K
| | - Judith A Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, The University of Manchester, Oxford Road, Manchester M13 9PT, U.K
| | - Nischal Rai
- School of Materials, University of Manchester, MECD Building A, Manchester M1 7HL, U.K
| | - Brian R Saunders
- School of Materials, University of Manchester, MECD Building A, Manchester M1 7HL, U.K
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7
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Basatvat S, Bach FC, Barcellona MN, Binch AL, Buckley CT, Bueno B, Chahine NO, Chee A, Creemers LB, Dudli S, Fearing B, Ferguson SJ, Gansau J, Gantenbein B, Gawri R, Glaeser JD, Grad S, Guerrero J, Haglund L, Hernandez PA, Hoyland JA, Huang C, Iatridis JC, Illien‐Junger S, Jing L, Kraus P, Laagland LT, Lang G, Leung V, Li Z, Lufkin T, van Maanen JC, McDonnell EE, Panebianco CJ, Presciutti SM, Rao S, Richardson SM, Romereim S, Schmitz TC, Schol J, Setton L, Sheyn D, Snuggs JW, Sun Y, Tan X, Tryfonidou MA, Vo N, Wang D, Williams B, Williams R, Yoon ST, Le Maitre CL. Harmonization and standardization of nucleus pulposus cell extraction and culture methods. JOR Spine 2023; 6:e1238. [PMID: 36994456 PMCID: PMC10041384 DOI: 10.1002/jsp2.1238] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 10/30/2022] [Accepted: 12/09/2022] [Indexed: 01/11/2023] Open
Abstract
Background In vitro studies using nucleus pulposus (NP) cells are commonly used to investigate disc cell biology and pathogenesis, or to aid in the development of new therapies. However, lab-to-lab variability jeopardizes the much-needed progress in the field. Here, an international group of spine scientists collaborated to standardize extraction and expansion techniques for NP cells to reduce variability, improve comparability between labs and improve utilization of funding and resources. Methods The most commonly applied methods for NP cell extraction, expansion, and re-differentiation were identified using a questionnaire to research groups worldwide. NP cell extraction methods from rat, rabbit, pig, dog, cow, and human NP tissue were experimentally assessed. Expansion and re-differentiation media and techniques were also investigated. Results Recommended protocols are provided for extraction, expansion, and re-differentiation of NP cells from common species utilized for NP cell culture. Conclusions This international, multilab and multispecies study identified cell extraction methods for greater cell yield and fewer gene expression changes by applying species-specific pronase usage, 60-100 U/ml collagenase for shorter durations. Recommendations for NP cell expansion, passage number, and many factors driving successful cell culture in different species are also addressed to support harmonization, rigor, and cross-lab comparisons on NP cells worldwide.
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Affiliation(s)
| | - Frances C. Bach
- Department of Clinical Sciences, Faculty of Veterinary MedicineUtrecht UniversityUtrechtThe Netherlands
| | - Marcos N. Barcellona
- Trinity Centre for Biomedical Engineering, Trinity Biomedical Sciences Institute, Trinity College DublinThe University of DublinDublinIreland
| | - Abbie L. Binch
- Biomolecular Sciences Research CentreSheffield Hallam UniversitySheffieldUK
| | - Conor T. Buckley
- Trinity Centre for Biomedical Engineering, Trinity Biomedical Sciences Institute, Trinity College DublinThe University of DublinDublinIreland
| | - Brian Bueno
- Leni & Peter W. May Department of OrthopaedicsIcahn School of Medicine at Mount SinaiNew YorkNew YorkUSA
| | - Nadeen O. Chahine
- Departments of Orthopedic Surgery and Biomedical EngineeringColumbia UniversityNew YorkNew YorkUSA
| | - Ana Chee
- Department of Orthopedic SurgeryRush University Medical CenterChicagoIllinoisUSA
| | - Laura B. Creemers
- Department of OrthopedicsUniversity Medical Center UtrechtUtrechtThe Netherlands
| | - Stefan Dudli
- Center for Experimental RheumatologyUniversity of ZurichZurichSwitzerland
| | - Bailey Fearing
- Department of Orthopedic SurgeryAtrium Health Musculoskeletal InstituteCharlotteNorth CarolinaUSA
| | | | - Jennifer Gansau
- Leni & Peter W. May Department of OrthopaedicsIcahn School of Medicine at Mount SinaiNew YorkNew YorkUSA
| | - Benjamin Gantenbein
- Bone & Joint Program, Department for BioMedical Research (DBMR), Medical FacultyUniversity of BernBernSwitzerland
- Department for Orthopedics and Traumatology, Insel University HospitalUniversity of BernBernSwitzerland
| | - Rahul Gawri
- Division of Orthopaedic Surgery, Department of SurgeryMcGill UniversityMontrealCanada
- Regenerative Orthopaedics and Innovation LaboratoryMcGill UniversityMontrealCanada
| | | | | | - Julien Guerrero
- Bone & Joint Program, Department for BioMedical Research (DBMR), Medical FacultyUniversity of BernBernSwitzerland
- Center of Dental Medicine, Oral Biotechnology & BioengineeringUniversity of ZurichZurichSwitzerland
| | - Lisbet Haglund
- Division of Orthopaedic Surgery, Department of SurgeryMcGill UniversityMontrealCanada
| | - Paula A. Hernandez
- Department of Orthopaedic SurgeryUniversity of Texas Southwestern Medical CenterDallasTexasUSA
| | - Judith A. Hoyland
- School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Sciences CentreThe University of ManchesterManchesterUK
| | - Charles Huang
- Department of Biomedical EngineeringUniversity of MiamiCoral GablesFloridaUSA
| | - James C. Iatridis
- Leni & Peter W. May Department of OrthopaedicsIcahn School of Medicine at Mount SinaiNew YorkNew YorkUSA
| | | | - Liufang Jing
- Department of OrthopaedicsEmory University School of MedicineAtlantaGAUSA
- Department of Biomedical EngineeringWashington University in St. LouisSt. LouisMissouriUSA
| | - Petra Kraus
- Department of OrthopaedicsEmory University School of MedicineAtlantaGAUSA
- Department of BiologyClarkson UniversityPotsdamNew YorkUSA
| | - Lisanne T. Laagland
- Department of Clinical Sciences, Faculty of Veterinary MedicineUtrecht UniversityUtrechtThe Netherlands
| | - Gernot Lang
- Department of Orthopedics and Trauma Surgery, Medical Center, Faculty of MedicineAlbert‐Ludwigs‐University of FreiburgFreiburg im BreisgauGermany
| | - Victor Leung
- Department of Orthopaedics & TraumatologyThe University of Hong KongHong KongSARChina
| | - Zhen Li
- AO Research Institute DavosDavosSwitzerland
| | - Thomas Lufkin
- Department of BiologyClarkson UniversityPotsdamNew YorkUSA
| | - Josette C. van Maanen
- Department of Clinical Sciences, Faculty of Veterinary MedicineUtrecht UniversityUtrechtThe Netherlands
| | - Emily E. McDonnell
- Trinity Centre for Biomedical Engineering, Trinity Biomedical Sciences Institute, Trinity College DublinThe University of DublinDublinIreland
| | - Chris J. Panebianco
- Leni & Peter W. May Department of OrthopaedicsIcahn School of Medicine at Mount SinaiNew YorkNew YorkUSA
| | | | - Sanjna Rao
- Leni & Peter W. May Department of OrthopaedicsIcahn School of Medicine at Mount SinaiNew YorkNew YorkUSA
| | - Stephen M. Richardson
- School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Sciences CentreThe University of ManchesterManchesterUK
| | - Sarah Romereim
- Department of Orthopedic SurgeryAtrium Health Musculoskeletal InstituteCharlotteNorth CarolinaUSA
| | - Tara C. Schmitz
- Orthopaedic Biomechanics, Department of Biomedical EngineeringEindhoven University of TechnologyEindhovenThe Netherlands
| | - Jordy Schol
- Department of Orthopedic SurgeryTokai University School of MedicineIseharaJapan
| | - Lori Setton
- Departments of Biomedical Engineering and Orthopedic SurgeryWashington University in St. LouisSt. LouisMissouriUSA
| | | | - Joseph W. Snuggs
- Biomolecular Sciences Research CentreSheffield Hallam UniversitySheffieldUK
| | - Y. Sun
- Department of Orthopaedics & TraumatologyThe University of Hong KongHong KongSARChina
| | - Xiaohong Tan
- Department of Biomedical EngineeringWashington University in St. LouisSt. LouisMissouriUSA
| | - Marianna A. Tryfonidou
- Department of Clinical Sciences, Faculty of Veterinary MedicineUtrecht UniversityUtrechtThe Netherlands
| | - Nam Vo
- Department of Orthopaedic SurgeryUniversity of PittsburghPittsburghPennsylvaniaUSA
| | - Dong Wang
- Department of Orthopaedic SurgeryUniversity of PittsburghPittsburghPennsylvaniaUSA
| | - Brandon Williams
- Department of Orthopedic SurgeryRush University Medical CenterChicagoIllinoisUSA
| | - Rebecca Williams
- Biomolecular Sciences Research CentreSheffield Hallam UniversitySheffieldUK
| | - S. Tim Yoon
- Department of OrthopaedicsEmory University School of MedicineAtlantaGAUSA
| | - Christine L. Le Maitre
- Biomolecular Sciences Research CentreSheffield Hallam UniversitySheffieldUK
- Department of Oncology and MetabolismUniversity of SheffieldSheffieldSouth YorkshireUK
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8
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Eckersley A, Ozols M, Chen P, Tam V, Ward LJ, Hoyland JA, Trafford A, Yuan XM, Schiller HB, Chan D, Sherratt MJ. Peptide location fingerprinting identifies species- and tissue-conserved structural remodelling of proteins as a consequence of ageing and disease. Matrix Biol 2022; 114:108-137. [PMID: 35618217 DOI: 10.1016/j.matbio.2022.05.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 05/12/2022] [Accepted: 05/19/2022] [Indexed: 12/30/2022]
Abstract
Extracellular matrices (ECMs) in the intervertebral disc (IVD), lung and artery are thought to undergo age-dependant accumulation of damage by chronic exposure to mechanisms such as reactive oxygen species, proteases and glycation. It is unknown whether this damage accumulation is species-dependant (via differing lifespans and hence cumulative exposures) or whether it can influence the progression of age-related diseases such as atherosclerosis. Peptide location fingerprinting (PLF) is a new proteomic analysis method, capable of the non-targeted identification of structure-associated changes within proteins. Here we applied PLF to publicly available ageing human IVD (outer annulus fibrosus), ageing mouse lung and human arterial atherosclerosis datasets and bioinformatically identified novel target proteins alongside common age-associated differences within protein structures which were conserved between three ECM-rich organs, two species, three IVD tissue regions, sexes and in an age-related disease. We identify peptide yield differences across protein structures which coincide with biological regions, potentially reflecting the functional consequences of ageing or atherosclerosis for macromolecular assemblies (collagen VI), enzyme/inhibitor activity (alpha-2 macroglobulin), activation states (complement C3) and interaction states (laminins, perlecan, fibronectin, filamin-A, collagen XIV and apolipoprotein-B). Furthermore, we show that alpha-2 macroglobulin and collagen XIV exhibit possible shared structural consequences in IVD ageing and arterial atherosclerosis, providing novel links between an age-related disease and intrinsic ageing. Crucially, we also demonstrate that fibronectin, laminin beta chains and filamin-A all exhibit conserved age-associated structural differences between mouse lung and human IVD, providing evidence that ECM, and their associating proteins, may be subjected to potentially similar mechanisms or consequences of ageing across both species, irrespective of differences in lifespan and tissue function.
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Affiliation(s)
- Alexander Eckersley
- Division of Cell Matrix Biology & Regenerative Medicine, School of Biological Science, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom.
| | - Matiss Ozols
- Division of Cell Matrix Biology & Regenerative Medicine, School of Biological Science, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom; Department of Human Genetics, Wellcome Sanger Institute, Genome Campus, Hinxton, United Kingdom; British Heart Foundation Centre of Research Excellence, University of Cambridge, Cambridge, United Kingdom
| | - Peikai Chen
- Department of Orthopaedics and Traumatology, The University of Hong Kong-Shenzhen Hospital (HKU-SZH), Shenzhen, Guangdong 518053, China
| | - Vivian Tam
- School of Biomedical Sciences, The University of Hong Kong, Hong Kong, China
| | - Liam J Ward
- Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden; Department of Forensic Genetics and Forensic Toxicology, National Board of Forensic Medicine, Linköping, Sweden
| | - Judith A Hoyland
- Division of Cell Matrix Biology & Regenerative Medicine, School of Biological Science, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Andrew Trafford
- Division of Cardiovascular Sciences, School of Biological Science, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Xi-Ming Yuan
- Occupational and Environmental Medicine, Division of Prevention, Rehabilitation and Community Medicine, Department of Health, Medicine and Caring Sciences, Linköping University, Linköping, Sweden
| | - Herbert B Schiller
- Institute of Lung Health and Immunity and Comprehensive Pneumology Center, Helmholtz Munich, Member of the German Center for Lung Research (DZL), Munich, Germany
| | - Danny Chan
- School of Biomedical Sciences, The University of Hong Kong, Hong Kong, China
| | - Michael J Sherratt
- Division of Cell Matrix Biology & Regenerative Medicine, School of Biological Science, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom.
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9
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Vitale M, Ligorio C, Smith IP, Richardson SM, Hoyland JA, Bella J. Incorporation of Natural and Recombinant Collagen Proteins within Fmoc-Based Self-Assembling Peptide Hydrogels. Gels 2022; 8:254. [PMID: 35621553 PMCID: PMC9140497 DOI: 10.3390/gels8050254] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2022] [Revised: 04/14/2022] [Accepted: 04/16/2022] [Indexed: 11/30/2022] Open
Abstract
Hydrogel biomaterials mimic the natural extracellular matrix through their nanofibrous ultrastructure and composition and provide an appropriate environment for cell-matrix and cell-cell interactions within their polymeric network. Hydrogels can be modified with different proteins, cytokines, or cell-adhesion motifs to control cell behavior and cell differentiation. Collagens are desirable and versatile proteins for hydrogel modification due to their abundance in the vertebrate extracellular matrix and their interactions with cell-surface receptors. Here, we report a quick, inexpensive and effective protocol for incorporation of natural, synthetic and recombinant collagens into Fmoc-based self-assembling peptide hydrogels. The hydrogels are modified through a diffusion protocol in which collagen molecules of different molecular sizes are successfully incorporated and retained over time. Characterization studies show that these collagens interact with the hydrogel fibers without affecting the overall mechanical properties of the composite hydrogels. Furthermore, the collagen molecules incorporated into the hydrogels are still biologically active and provide sites for adhesion and spreading of human fibrosarcoma cells through interaction with the α2β1 integrin. Our protocol can be used to incorporate different types of collagen molecules into peptide-based hydrogels without any prior chemical modification. These modified hydrogels could be used in studies where collagen-based substrates are required to differentiate and control the cell behavior. Our protocol can be easily adapted to the incorporation of other bioactive proteins and peptides into peptide-based hydrogels to modulate their characteristics and their interaction with different cell types.
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Affiliation(s)
| | | | | | | | | | - Jordi Bella
- Division of Cell Matrix Biology & Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Sciences Centre, The University of Manchester, Manchester M13 9PT, UK; (M.V.); (C.L.); (I.P.S.); (S.M.R.); (J.A.H.)
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10
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Ligorio C, Hoyland JA, Saiani A. Self-Assembling Peptide Hydrogels as Functional Tools to Tackle Intervertebral Disc Degeneration. Gels 2022; 8:gels8040211. [PMID: 35448112 PMCID: PMC9028266 DOI: 10.3390/gels8040211] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 03/25/2022] [Accepted: 03/28/2022] [Indexed: 12/16/2022] Open
Abstract
Low back pain (LBP), caused by intervertebral disc (IVD) degeneration, is a major contributor to global disability. In its healthy state, the IVD is a tough and well-hydrated tissue, able to act as a shock absorber along the spine. During degeneration, the IVD is hit by a cell-driven cascade of events, which progressively lead to extracellular matrix (ECM) degradation, chronic inflammation, and pain. Current treatments are divided into palliative care (early stage degeneration) and surgical interventions (late-stage degeneration), which are invasive and poorly efficient in the long term. To overcome these limitations, alternative tissue engineering and regenerative medicine strategies, in which soft biomaterials are used as injectable carriers of cells and/or biomolecules to be delivered to the injury site and restore tissue function, are currently being explored. Self-assembling peptide hydrogels (SAPHs) represent a promising class of de novo synthetic biomaterials able to merge the strengths of both natural and synthetic hydrogels for biomedical applications. Inherent features, such as shear-thinning behaviour, high biocompatibility, ECM biomimicry, and tuneable physiochemical properties make these hydrogels appropriate and functional tools to tackle IVD degeneration. This review will describe the pathogenesis of IVD degeneration, list biomaterials requirements to attempt IVD repair, and focus on current peptide hydrogel materials exploited for this purpose.
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Affiliation(s)
- Cosimo Ligorio
- Department of Materials, School of Natural Sciences, Faculty of Science and Engineering, The University of Manchester, Manchester M1 3BB, UK;
- Manchester Institute of Biotechnology (MIB), The University of Manchester, Manchester M1 7DN, UK
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester M13 9PG, UK;
- Correspondence:
| | - Judith A. Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester M13 9PG, UK;
| | - Alberto Saiani
- Department of Materials, School of Natural Sciences, Faculty of Science and Engineering, The University of Manchester, Manchester M1 3BB, UK;
- Manchester Institute of Biotechnology (MIB), The University of Manchester, Manchester M1 7DN, UK
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11
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Wang D, Peng P, Dudek M, Hu X, Xu X, Shang Q, Wang D, Jia H, Wang H, Gao B, Zheng C, Mao J, Gao C, He X, Cheng P, Wang H, Zheng J, Hoyland JA, Meng QJ, Luo Z, Yang L. Restoring the dampened expression of the core clock molecule BMAL1 protects against compression-induced intervertebral disc degeneration. Bone Res 2022; 10:20. [PMID: 35217644 PMCID: PMC8881495 DOI: 10.1038/s41413-022-00187-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Revised: 12/07/2021] [Accepted: 12/14/2021] [Indexed: 11/09/2022] Open
Abstract
The circadian clock participates in maintaining homeostasis in peripheral tissues, including intervertebral discs (IVDs). Abnormal mechanical loading is a known risk factor for intervertebral disc degeneration (IDD). Based on the rhythmic daily loading pattern of rest and activity, we hypothesized that abnormal mechanical loading could dampen the IVD clock, contributing to IDD. Here, we investigated the effects of abnormal loading on the IVD clock and aimed to inhibit compression-induced IDD by targeting the core clock molecule brain and muscle Arnt-like protein-1 (BMAL1). In this study, we showed that BMAL1 KO mice exhibit radiographic features similar to those of human IDD and that BMAL1 expression was negatively correlated with IDD severity by systematic analysis based on 149 human IVD samples. The intrinsic circadian clock in the IVD was dampened by excessive loading, and BMAL1 overexpression by lentivirus attenuated compression-induced IDD. Inhibition of the RhoA/ROCK pathway by Y-27632 or melatonin attenuated the compression-induced decrease in BMAL1 expression. Finally, the two drugs partially restored BMAL1 expression and alleviated IDD in a diurnal compression model. Our results first show that excessive loading dampens the circadian clock of nucleus pulposus tissues via the RhoA/ROCK pathway, the inhibition of which potentially protects against compression-induced IDD by preserving BMAL1 expression. These findings underline the importance of the circadian clock for IVD homeostasis and provide a potentially effective therapeutic strategy for IDD.
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Affiliation(s)
- Dong Wang
- Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Pandi Peng
- Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China.,Medical Research Institute, Northwestern Polytechnical University, Xi'an, 710068, People's Republic of China
| | - Michal Dudek
- School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, M13 9PL, UK.,Wellcome Centre for Cell Matrix Research, University of Manchester, Manchester, M13 9PL, UK
| | - Xueyu Hu
- Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Xiaolong Xu
- Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Qiliang Shang
- Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Di Wang
- Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Haoruo Jia
- Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Han Wang
- Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Bo Gao
- Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Chao Zheng
- Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Jianxin Mao
- Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Chu Gao
- Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Xin He
- Department of Medicine Chemistry and Pharmaceutical Analysis, School of Pharmacy, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Pengzhen Cheng
- Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Huanbo Wang
- Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Jianmin Zheng
- Radiology Department, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China
| | - Judith A Hoyland
- School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, M13 9PL, UK
| | - Qing-Jun Meng
- School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, M13 9PL, UK.,Wellcome Centre for Cell Matrix Research, University of Manchester, Manchester, M13 9PL, UK
| | - Zhuojing Luo
- Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China. .,Medical Research Institute, Northwestern Polytechnical University, Xi'an, 710068, People's Republic of China.
| | - Liu Yang
- Institute of Orthopedic Surgery, Xijing Hospital, Fourth Military Medical University, Xi'an, 710032, People's Republic of China. .,Medical Research Institute, Northwestern Polytechnical University, Xi'an, 710068, People's Republic of China.
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12
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Vitale M, Ligorio C, McAvan B, Hodson NW, Allan C, Richardson SM, Hoyland JA, Bella J. Hydroxyapatite-decorated Fmoc-hydrogel as a bone-mimicking substrate for osteoclast differentiation and culture. Acta Biomater 2022; 138:144-154. [PMID: 34781025 PMCID: PMC8756142 DOI: 10.1016/j.actbio.2021.11.011] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 10/19/2021] [Accepted: 11/09/2021] [Indexed: 12/25/2022]
Abstract
Hydrogels are water-swollen networks with great potential for tissue engineering applications. However, their use in bone regeneration is often hampered due to a lack of materials' mineralization and poor mechanical properties. Moreover, most studies are focused on osteoblasts (OBs) for bone formation, while osteoclasts (OCs), cells involved in bone resorption, are often overlooked. Yet, the role of OCs is pivotal for bone homeostasis and aberrant OC activity has been reported in several pathological diseases, such as osteoporosis and bone cancer. For these reasons, the aim of this work is to develop customised, reinforced hydrogels to be used as material platform to study cell function, cell-material interactions and ultimately to provide a substrate for OC differentiation and culture. Here, Fmoc-based RGD-functionalised peptide hydrogels have been modified with hydroxyapatite nanopowder (Hap) as nanofiller, to create nanocomposite hydrogels. Atomic force microscopy showed that Hap nanoparticles decorate the peptide nanofibres with a repeating pattern, resulting in stiffer hydrogels with improved mechanical properties compared to Hap- and RGD-free controls. Furthermore, these nanocomposites supported adhesion of Raw 264.7 macrophages and their differentiation in 2D to mature OCs, as defined by the adoption of a typical OC morphology (presence of an actin ring, multinucleation, and ruffled plasma membrane). Finally, after 7 days of culture OCs showed an increased expression of TRAP, a typical OC differentiation marker. Collectively, the results suggest that the Hap/Fmoc-RGD hydrogel has a potential for bone tissue engineering, as a 2D model to study impairment or upregulation of OC differentiation. STATEMENT OF SIGNIFICANCE: Altered osteoclasts (OC) function is one of the major cause of bone fracture in the most commonly skeletal disorders (e.g. osteoporosis). Peptide hydrogels can be used as a platform to mimic the bone microenvironment and provide a tool to assess OC differentiation and function. Moreover, hydrogels can incorporate different nanofillers to yield hybrid biomaterials with enhanced mechanical properties and improved cytocompatibility. Herein, Fmoc-based RGD-functionalised peptide hydrogels were decorated with hydroxyapatite (Hap) nanoparticles to generate a hydrogel with improved rheological properties. Furthermore, they are able to support osteoclastogenesis of Raw264.7 cells in vitro as confirmed by morphology changes and expression of OC-markers. Therefore, this Hap-decorated hydrogel can be used as a template to successfully differentiate OC and potentially study OC dysfunction.
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Affiliation(s)
- Mattia Vitale
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester M13 9PT, United Kingdom
| | - Cosimo Ligorio
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester M13 9PT, United Kingdom
| | - Bethan McAvan
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester M13 9PT, United Kingdom
| | - Nigel W Hodson
- BioAFM Facility, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester, United Kingdom
| | - Chris Allan
- Biogelx Ltd-BioCity Scotland, Bo'Ness Rd, Newhouse, Chapelhall, Motherwell ML1 5UH, United Kingdom
| | - Stephen M Richardson
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester M13 9PT, United Kingdom.
| | - Judith A Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester M13 9PT, United Kingdom.
| | - Jordi Bella
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester M13 9PT, United Kingdom.
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13
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Eckersley A, Ozols M, Chen P, Tam V, Hoyland JA, Trafford A, Chan D, Sherratt MJ. Peptide Location Fingerprinting Reveals Tissue Region-Specific Differences in Protein Structures in an Ageing Human Organ. Int J Mol Sci 2021; 22:10408. [PMID: 34638745 PMCID: PMC8509034 DOI: 10.3390/ijms221910408] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2021] [Revised: 09/10/2021] [Accepted: 09/14/2021] [Indexed: 12/18/2022] Open
Abstract
In ageing tissues, long-lived extracellular matrix (ECM) proteins are susceptible to the accumulation of structural damage due to diverse mechanisms including glycation, oxidation and protease cleavage. Peptide location fingerprinting (PLF) is a new mass spectrometry (MS) analysis technique capable of identifying proteins exhibiting structural differences in complex proteomes. PLF applied to published young and aged intervertebral disc (IVD) MS datasets (posterior, lateral and anterior regions of the annulus fibrosus) identified 268 proteins with age-associated structural differences. For several ECM assemblies (collagens I, II and V and aggrecan), these differences were markedly conserved between degeneration-prone (posterior and lateral) and -resistant (anterior) regions. Significant differences in peptide yields, observed within collagen I α2, collagen II α1 and collagen V α1, were located within their triple-helical regions and/or cleaved C-terminal propeptides, indicating potential accumulation of damage and impaired maintenance. Several proteins (collagen V α1, collagen II α1 and aggrecan) also exhibited tissue region (lateral)-specific differences in structure between aged and young samples, suggesting that some ageing mechanisms may act locally within tissues. This study not only reveals possible age-associated differences in ECM protein structures which are tissue-region specific, but also highlights the ability of PLF as a proteomic tool to aid in biomarker discovery.
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Affiliation(s)
- Alexander Eckersley
- Division of Cell Matrix Biology & Regenerative Medicine, Faculty of Biology, Medicine and Health, School of Biological Sciences, The University of Manchester, Manchester M13 9PT, UK; (M.O.); (J.A.H.)
| | - Matiss Ozols
- Division of Cell Matrix Biology & Regenerative Medicine, Faculty of Biology, Medicine and Health, School of Biological Sciences, The University of Manchester, Manchester M13 9PT, UK; (M.O.); (J.A.H.)
- Department of Human Genetics, Wellcome Sanger Institute, Genome Campus, Hinxton CB10 1SA, UK
| | - Peikai Chen
- School of Biomedical Sciences, The University of Hong Kong, Hong Kong, China; (P.C.); (V.T.); (D.C.)
- Department of Orthopaedics and Traumatology, The University of Hong Kong-Shenzhen Hospital (HKU-SZH), Shenzhen 518053, China
| | - Vivian Tam
- School of Biomedical Sciences, The University of Hong Kong, Hong Kong, China; (P.C.); (V.T.); (D.C.)
| | - Judith A. Hoyland
- Division of Cell Matrix Biology & Regenerative Medicine, Faculty of Biology, Medicine and Health, School of Biological Sciences, The University of Manchester, Manchester M13 9PT, UK; (M.O.); (J.A.H.)
- NIHR Manchester Biomedical Research Centre, Central Manchester Foundation Trust, Manchester Academic Health Science Centre, Manchester M13 9PL, UK
| | - Andrew Trafford
- Manchester Academic Health Science Centre, Division of Cardiovascular Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Manchester M13 9PL, UK;
| | - Danny Chan
- School of Biomedical Sciences, The University of Hong Kong, Hong Kong, China; (P.C.); (V.T.); (D.C.)
| | - Michael J. Sherratt
- Division of Cell Matrix Biology & Regenerative Medicine, Faculty of Biology, Medicine and Health, School of Biological Sciences, The University of Manchester, Manchester M13 9PT, UK; (M.O.); (J.A.H.)
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14
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Ligorio C, O'Brien M, Hodson NW, Mironov A, Iliut M, Miller AF, Vijayaraghavan A, Hoyland JA, Saiani A. TGF-β3-loaded graphene oxide - self-assembling peptide hybrid hydrogels as functional 3D scaffolds for the regeneration of the nucleus pulposus. Acta Biomater 2021; 127:116-130. [PMID: 33831573 DOI: 10.1016/j.actbio.2021.03.077] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 03/30/2021] [Accepted: 03/30/2021] [Indexed: 12/14/2022]
Abstract
Intervertebral disc (IVD) degeneration is a process that starts in the central nucleus pulposus (NP) and leads to inflammation, extracellular matrix (ECM) degradation, and progressive loss of disc height. Early treatment of IVD degeneration is critical to the reduction of low back pain and related disability. As such, minimally invasive therapeutic approaches that can halt and reverse NP degeneration at the early stages of the disease are needed. Recently, we developed an injectable graphene oxide (GO) - self-assembling peptide FEFKFEFK (F: phenylalanine; K: lysine; E: glutamic acid) hybrid hydrogels as potential delivery platform for cells and/or drugs in the NP. In this current study, we explored the possibility of using the GO present in these hybrid hydrogels as a vehicle for the sequestration and controlled delivery of transforming growth factor beta-3 (TGF-β3), an anabolic growth factor (GF) known to direct NP cell fate and function. For this purpose, we first investigated the potential of GO to bind and sequestrate TGF-β3. We then cultured bovine NP cells in the new functional scaffolds and investigated their response to the presence of GO and TGF-β3. Our results clearly showed that GO flakes can sequestrate TGF-β3 through strong binding interactions resulting in a slow and prolonged release, with the GF remaining active even when bound to the GO flakes. The adsorption of the GF on the GO flakes to create TGF-β3-loaded GO flakes and their subsequent incorporation in the hydrogels through mixing, [(GO/TGF-β3Ads)-F8] hydrogel, led to the upregulation of NP-specific genes, accompanied by the production and deposition of an NP-like ECM, rich in aggrecan and collagen II. NP cells actively interacted with TGF-β3-loaded GO flakes and remodeled the scaffolds through endocytosis. This work highlights the potential of using GO as a nanocarrier for the design of functional hybrid peptide-based hydrogels. STATEMENT OF SIGNIFICANCE: Intervertebral disc (IVD) degeneration is a process that starts in the central nucleus pulposus (NP) and leads to inflammation, extracellular matrix (ECM) degradation, and progressive loss of disc height. As such, minimally invasive therapeutic approaches that can halt and reverse NP degeneration at the early stages of the disease are needed. In this current study, we explored the possibility of using peptide - GO hybrid hydrogels as a vehicle for the sequestration and controlled delivery of transforming growth factor beta-3 (TGF-β3), an anabolic growth factor (GF) known to direct NP cell fate and function.
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15
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Lakstins K, Yeater T, Arnold L, Khan S, Hoyland JA, Purmessur D. Investigating the role of culture conditions on hypertrophic differentiation in human cartilage endplate cells. J Orthop Res 2021; 39:1204-1216. [PMID: 32285966 DOI: 10.1002/jor.24692] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Revised: 02/18/2020] [Accepted: 03/28/2020] [Indexed: 02/04/2023]
Abstract
Cartilage endplate degeneration/calcification has been linked to the onset and progression of intervertebral disc degeneration and there is a critical need to understand mechanisms, such as hypertrophic differentiation, of cartilage endplate degeneration/calcification to inform treatment strategies for discogenic back pain. In vitro cell culture conditions capable of inducing hypertrophic differentiation are used to study pathophysiological mechanisms in articular chondrocytes, but culture conditions capable of inducing a hypertrophic cartilage endplate cell phenotype have yet to be explored. The goal of this study was to investigate the role of culture conditions capable of inducing hypertrophic differentiation in articular chondrocytes on hypertrophic differentiation in human cartilage endplate cells. Isolated human cartilage endplate cells were cultured as pellets for 21 days at either 5% O2 (physiologic for cartilage) or 20.7% O2 (hyperoxic) and treated with 10% fetal bovine serum or Wnt agonist, two stimuli used to induce hypertrophic differentiation in articular chondrocytes. Cartilage endplate cells did not exhibit a hypertrophic cell morphology in response to fetal bovine serum or Wnt agonist but did display other hallmarks of chondrocyte hypertrophy and degeneration such as hypertrophic gene and protein expression, and a decrease in healthy proteoglycans and an increase in fibrous collagen accumulation. These findings demonstrate that cartilage endplate cells take on a degenerative phenotype in response to hypertrophic stimuli in vitro, but do not undergo classical changes in morphology associated with hypertrophic differentiation regardless of oxygen levels, highlighting potential differences in the response of cartilage endplate cells versus articular chondrocytes to the same stimuli.
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Affiliation(s)
- Katherine Lakstins
- Department of Biomedical Engineering, The Ohio State University, Columbus, Ohio
| | - Taylor Yeater
- Department of Biomedical Engineering, The Ohio State University, Columbus, Ohio
| | - Lauren Arnold
- Department of Biomedical Engineering, The Ohio State University, Columbus, Ohio
| | - Safdar Khan
- Department of Orthopedics, The Ohio State University, Columbus, Ohio
| | - Judith A Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, The University of Manchester, Manchester, UK.,NIHR Manchester Biomedical Research Centre, Central Manchester Foundation Trust, Manchester Academic Health Science Centre, School of Biological Sciences, Manchester, UK
| | - Devina Purmessur
- Department of Biomedical Engineering, The Ohio State University, Columbus, Ohio.,Department of Orthopedics, The Ohio State University, Columbus, Ohio
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16
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Dudek M, Angelucci C, Pathiranage D, Wang P, Mallikarjun V, Lawless C, Swift J, Kadler KE, Boot-Handford RP, Hoyland JA, Lamande SR, Bateman JF, Meng QJ. Circadian time series proteomics reveals daily dynamics in cartilage physiology. Osteoarthritis Cartilage 2021; 29:739-749. [PMID: 33610821 PMCID: PMC8113022 DOI: 10.1016/j.joca.2021.02.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 01/28/2021] [Accepted: 02/08/2021] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Cartilage in joints such as the hip and knee experiences repeated phases of heavy loading and low load recovery during the 24-h day/night cycle. Our previous work has shown 24 h rhythmic changes in gene expression at transcript level between night and day in wild type mouse cartilage which is lost in a circadian clock knock-out mouse model. However, it remains unknown to what extent circadian rhythms also regulate protein level gene expression in this matrix rich tissue. METHODS We investigated daily changes of protein abundance in mouse femoral head articular cartilage by performing a 48-h time-series LC-MS/MS analysis. RESULTS Out of the 1,177 proteins we identified across all time points, 145 proteins showed rhythmic changes in their abundance within the femoral head cartilage. Among these were molecules that have been implicated in key cartilage functions, including CTGF, MATN1, PAI-1 and PLOD1 & 2. Pathway analysis revealed that protein synthesis, cytoskeleton and glucose metabolism exhibited time-of-day dependent functions. Analysis of published cartilage proteomics datasets revealed that a significant portion of rhythmic proteins were dysregulated in osteoarthritis and/or ageing. CONCLUSIONS Our circadian proteomics study reveals that articular cartilage is a much more dynamic tissue than previously thought, with chondrocytes driving circadian rhythms not only in gene transcription but also in protein abundance. Our results clearly call for the consideration of circadian timing mechanisms not only in cartilage biology, but also in the pathogenesis, treatment strategies and biomarker detection in osteoarthritis.
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Affiliation(s)
- M Dudek
- Wellcome Centre for Cell Matrix Research, Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, UK
| | - C Angelucci
- Murdoch Children's Research Institute and University of Melbourne, Parkville, Victoria, Australia
| | - D Pathiranage
- Wellcome Centre for Cell Matrix Research, Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, UK
| | - P Wang
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK
| | - V Mallikarjun
- Wellcome Centre for Cell Matrix Research, Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, UK
| | - C Lawless
- Wellcome Centre for Cell Matrix Research, Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, UK
| | - J Swift
- Wellcome Centre for Cell Matrix Research, Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, UK
| | - K E Kadler
- Wellcome Centre for Cell Matrix Research, Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, UK
| | - R P Boot-Handford
- Wellcome Centre for Cell Matrix Research, Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, UK
| | - J A Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK; NIHR Manchester Biomedical Research Centre, Central Manchester Foundation Trust, Manchester Academic Health Science Centre, Manchester, United Kingdom
| | - S R Lamande
- Murdoch Children's Research Institute and University of Melbourne, Parkville, Victoria, Australia
| | - J F Bateman
- Murdoch Children's Research Institute and University of Melbourne, Parkville, Victoria, Australia
| | - Q-J Meng
- Wellcome Centre for Cell Matrix Research, Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, UK.
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17
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Nedeva IR, Vitale M, Elson A, Hoyland JA, Bella J. Role of OSCAR Signaling in Osteoclastogenesis and Bone Disease. Front Cell Dev Biol 2021; 9:641162. [PMID: 33912557 PMCID: PMC8072347 DOI: 10.3389/fcell.2021.641162] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2020] [Accepted: 03/15/2021] [Indexed: 11/13/2022] Open
Abstract
Formation of mature bone-resorbing cells through osteoclastogenesis is required for the continuous remodeling and repair of bone tissue. In aging and disease this process may become aberrant, resulting in excessive bone degradation and fragility fractures. Interaction of receptor-activator of nuclear factor-κB (RANK) with its ligand RANKL activates the main signaling pathway for osteoclastogenesis. However, compelling evidence indicates that this pathway may not be sufficient for the production of mature osteoclast cells and that co-stimulatory signals may be required for both the expression of osteoclast-specific genes and the activation of osteoclasts. Osteoclast-associated receptor (OSCAR), a regulator of osteoclast differentiation, provides one such co-stimulatory pathway. This review summarizes our present knowledge of osteoclastogenesis signaling and the role of OSCAR in the normal production of bone-resorbing cells and in bone disease. Understanding the signaling mechanism through this receptor and how it contributes to the production of mature osteoclasts may offer a more specific and targeted approach for pharmacological intervention against pathological bone resorption.
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Affiliation(s)
- Iva R Nedeva
- Division of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology, Medicine and Health, School of Biological Sciences, University of Manchester, Manchester, United Kingdom
| | - Mattia Vitale
- Division of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology, Medicine and Health, School of Biological Sciences, University of Manchester, Manchester, United Kingdom
| | - Ari Elson
- Department of Molecular Genetics, The Weizmann Institute of Science, Rehovot, Israel
| | - Judith A Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology, Medicine and Health, School of Biological Sciences, University of Manchester, Manchester, United Kingdom
| | - Jordi Bella
- Division of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology, Medicine and Health, School of Biological Sciences, University of Manchester, Manchester, United Kingdom
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18
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Binch ALA, Ratcliffe LPD, Milani AH, Saunders BR, Armes SP, Hoyland JA. Site-Directed Differentiation of Human Adipose-Derived Mesenchymal Stem Cells to Nucleus Pulposus Cells Using an Injectable Hydroxyl-Functional Diblock Copolymer Worm Gel. Biomacromolecules 2021; 22:837-845. [PMID: 33470795 DOI: 10.1021/acs.biomac.0c01556] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Adipose-derived mesenchymal stem cells (ASCs) have been identified for their promising therapeutic potential to regenerate and repopulate the degenerate intervertebral disk (IVD), which is a major cause of lower back pain. The optimal cell delivery system remains elusive but encapsulation of cells within scaffolds is likely to offer a decisive advantage over the delivery of cells in solution by ensuring successful retention within the tissue. Herein, we evaluate the use of a fully synthetic, thermoresponsive poly(glycerol monomethacrylate)-poly(2-hydroxypropyl methacrylate) (PGMA-PHPMA) diblock copolymer worm gel that mimics the structure of hydrophilic glycosaminoglycans. The objective was to use this gel to direct differentiation of human ASCs toward a nucleus pulposus (NP) phenotype, with or without the addition of discogenic growth factors TGFβ or GDF6. Accordingly, human ASCs were incorporated into a cold, free-flowing aqueous dispersion of the diblock copolymer, gelation induced by warming to 37 °C and cell culture was conducted for 14 days with or without such growth factors to assess the expression of characteristic NP markers compared to those produced when using collagen gels. In principle, the shear-thinning nature of the biocompatible worm gel enables encapsulated human ASCs to be injected into the IVD using a 21G needle. Moreover, we find significantly higher gene expression levels of ACAN, SOX-9, KRT8, and KR18 for ASCs encapsulated within worm gels compared to collagen scaffolds, regardless of the growth factors employed. In summary, such wholly synthetic worm gels offer considerable potential as an injectable cell delivery scaffold for the treatment of degenerate disk disease by promoting the transition of ASCs toward an NP-phenotype.
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Affiliation(s)
- Abbie L A Binch
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Sciences Centre, University of Manchester, Manchester M13 9PL, U.K
| | - Liam P D Ratcliffe
- Department of Chemistry, University of Sheffield Brook Hill, Sheffield S3 7HF, South Yorkshire, U.K
| | - Amir H Milani
- Department of Materials, University of Manchester, Manchester M13 9PL, U.K
| | - Brian R Saunders
- Department of Materials, University of Manchester, Manchester M13 9PL, U.K
| | - Steven P Armes
- Department of Chemistry, University of Sheffield Brook Hill, Sheffield S3 7HF, South Yorkshire, U.K
| | - Judith A Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Sciences Centre, University of Manchester, Manchester M13 9PL, U.K.,NIHR Manchester Biomedical Research Centre, Central Manchester Foundation Trust, Manchester Academic Health Science Centre, Manchester M13 9WL, U.K
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19
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Tang S, Salazar-Puerta A, Richards J, Khan S, Hoyland JA, Gallego-Perez D, Walter B, Higuita-Castro N, Purmessur D. Non-viral reprogramming of human nucleus pulposus cells with FOXF1 via extracellular vesicle delivery: an in vitro and in vivo study. Eur Cell Mater 2021; 41:90-107. [PMID: 33465243 PMCID: PMC8514169 DOI: 10.22203/ecm.v041a07] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Intervertebral disc (IVD) degeneration is characterized by decreased cellularity and proteoglycan synthesis and increased inflammation, catabolism, and neural/vascular ingrowth. Regenerative methods for IVD degeneration are largely cell-therapy-based or involve viral vectors, which are associated with mutagenesis and undesired immune responses. The present study used bulk electroporation and engineered extracellular vesicles (EVs) to deliver forkhead-box F1 (FOXF1) mRNA to degenerate human nucleus pulposus (NP) cells as a minimally invasive therapeutic strategy for IVD regeneration. Bulk electroporation was used to investigate FOXF1 effects on human NP cells during a 4-week culture in 3D agarose constructs. Engineered EV delivery of FOXF1 into human IVD cells in monolayer was determined, with subsequent in vivo validation in a pilot mouse IVD puncture model. FOXF1 transfection significantly altered gene expression by upregulating healthy NP markers [FOXF1, keratin 19 (KRT19)], decreasing inflammatory cytokines [interleukin (IL)-1β, -6], catabolic enzymes [metalloproteinase 13 (MMP13)] and nerve growth factor (NGF), with significant increases in glycosaminoglycan accumulation in human NP cells. Engineered EVs loaded with FOXF1 demonstrated successful encapsulation of FOXF1 cargo and effective uptake by human NP cells cultured in monolayer. Injection of FOXF1-loaded EVs into the mouse IVD in vivo resulted in a significant upregulation of FOXF1 and Brachyury, compared to controls at 7 d post-injection, with no evidence of cytotoxicity. This is the first study to demonstrate non-viral delivery of FOXF1 and reprogramming of human NP cells in vitro and mouse IVD cells in vivo. This strategy represents a non-addictive approach for treating IVD degeneration and associated back pain.
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Affiliation(s)
| | | | | | | | | | | | | | | | - D Purmessur
- 3155 Biomedical and Materials Engineering Complex, 140 W. 19th Ave, Columbus, OH 43210,
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20
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Hodgkinson T, Gilbert HTJ, Pandya T, Diwan AD, Hoyland JA, Richardson SM. Regenerative Response of Degenerate Human Nucleus Pulposus Cells to GDF6 Stimulation. Int J Mol Sci 2020; 21:E7143. [PMID: 32992671 PMCID: PMC7582366 DOI: 10.3390/ijms21197143] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2020] [Revised: 09/18/2020] [Accepted: 09/24/2020] [Indexed: 12/13/2022] Open
Abstract
Growth differentiation factor (GDF) family members have been implicated in the development and maintenance of healthy nucleus pulposus (NP) tissue, making them promising therapeutic candidates for treatment of intervertebral disc (IVD) degeneration and associated back pain. GDF6 has been shown to promote discogenic differentiation of mesenchymal stem cells, but its effect on NP cells remains largely unknown. Our aim was to investigate GDF6 signalling in adult human NP cells derived from degenerate tissue and determine the signal transduction pathways critical for GDF6-mediated phenotypic changes and tissue homeostatic mechanisms. This study demonstrates maintained expression of GDF6 receptors in human NP and annulus fibrosus (AF) cells across a range of degeneration grades at gene and protein level. We observed an anabolic response in NP cells treated with recombinant GDF6 (increased expression of matrix and NP-phenotypic markers; increased glycosaminoglycan production; no change in catabolic enzyme expression), and identified the signalling pathways involved in these responses (SMAD1/5/8 and ERK1/2 phosphorylation, validated by blocking studies). These findings suggest that GDF6 promotes a healthy disc tissue phenotype in degenerate NP cells through SMAD-dependent and -independent (ERK1/2) mechanisms, which is important for development of GDF6 therapeutic strategies for treatment of degenerate discs.
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Affiliation(s)
- Tom Hodgkinson
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Sciences Centre, Oxford Road, Manchester M13 9PT, UK; (T.H.); (H.T.J.G.); (T.P.); (J.A.H.)
| | - Hamish T. J. Gilbert
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Sciences Centre, Oxford Road, Manchester M13 9PT, UK; (T.H.); (H.T.J.G.); (T.P.); (J.A.H.)
| | - Tej Pandya
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Sciences Centre, Oxford Road, Manchester M13 9PT, UK; (T.H.); (H.T.J.G.); (T.P.); (J.A.H.)
| | - Ashish D. Diwan
- St George & Sutherland Clinical School, University of New South Wales, Sydney, NSW 2217, Australia;
| | - Judith A. Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Sciences Centre, Oxford Road, Manchester M13 9PT, UK; (T.H.); (H.T.J.G.); (T.P.); (J.A.H.)
- NIHR Manchester Biomedical Research Centre, Central Manchester Foundation Trust, Manchester Academic Health Science Centre, Manchester M13 9NT, UK
| | - Stephen M. Richardson
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Sciences Centre, Oxford Road, Manchester M13 9PT, UK; (T.H.); (H.T.J.G.); (T.P.); (J.A.H.)
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21
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Hodgkinson T, Wignall F, Hoyland JA, Richardson SM. High BMPR2 expression leads to enhanced SMAD1/5/8 signalling and GDF6 responsiveness in human adipose-derived stem cells: implications for stem cell therapies for intervertebral disc degeneration. J Tissue Eng 2020; 11:2041731420919334. [PMID: 32489577 PMCID: PMC7238299 DOI: 10.1177/2041731420919334] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2019] [Accepted: 03/26/2020] [Indexed: 01/08/2023] Open
Abstract
Stem cell–based regenerative strategies are promising for intervertebral disc
degeneration. Stimulation of bone-marrow- and adipose-derived multipotent stem
cells with recombinant human growth differentiation factor 6 (rhGDF6) promotes
anabolic nucleus pulposus like phenotypes. In comparison to mesenchymal stem
cells, adipose-derived multipotent stem cells exhibit greater NP-marker gene
expression and proteoglycan-rich matrix production. To understand these response
differences, we investigated bone morphogenetic protein receptor profiles in
donor-matched human mesenchymal stem cells and adipose-derived multipotent stem
cells, determined differences in rhGDF6 signalling and their importance in
NP-like differentiation between cell populations. Bone morphogenetic protein
receptor expression in mesenchymal stem cells and adipose-derived multipotent
stem cells revealed elevated and less variable expression of BMPR2 in
adipose-derived multipotent stem cells, which corresponded with increased
downstream pathway activation (SMAD1/5/8, ERK1/2). Inhibitor studies
demonstrated SMAD1/5/8 signalling was required for rhGDF6-induced
nucleus-pulposus-like adipose-derived multipotent stem cell differentiation,
while ERK1/2 contributed significantly to critical nucleus pulposus gene
expression, aggrecan and type II collagen production. These data inform cell
regenerative therapeutic choices for intervertebral disc degeneration
regeneration and identify further potential optimisation targets.
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Affiliation(s)
- Tom Hodgkinson
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Oxford Road, Manchester, UK
| | - Francis Wignall
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Oxford Road, Manchester, UK
| | - Judith A Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Oxford Road, Manchester, UK.,NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK
| | - Stephen M Richardson
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Oxford Road, Manchester, UK
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22
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van den Akker GGH, Eijssen LMT, Richardson SM, Rhijn LWV, Hoyland JA, Welting TJM, Voncken JW. A Membranome-Centered Approach Defines Novel Biomarkers for Cellular Subtypes in the Intervertebral Disc. Cartilage 2020; 11:203-220. [PMID: 29629573 PMCID: PMC7097986 DOI: 10.1177/1947603518764260] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
OBJECTIVE Lack of specific marker-sets prohibits definition and functional distinction of cellular subtypes in the intervertebral disc (IVD), such as those from the annulus fibrosus (AF) and the nucleus pulposus (NP). DESIGN We recently generated immortalized cell lines from human NP and AF tissues; these comprise a set of functionally distinct clonal subtypes. Whole transcriptome analyses were performed of 12 phenotypically distinct clonal cell lines (4× NP-Responder, 4× NP-nonResponder, 2× AF-Sheet forming, and 2× AF-nonSheet forming). Data sets were filtered for membrane-associated marker genes and compared to literature. RESULTS Comparison of our immortal cell lines to published primary NP, AF, and articular chondrocytes (AC) transcriptome datasets revealed preservation of AF and NP phenotypes. NP-specific membrane-associated genes were defined by comparison to AF cells in both the primary dataset (46 genes) and immortal cell-lines (161 genes). Definition of AF-specific membrane-associated genes yielded 125 primary AF cell and 92 immortal cell-line markers. Overlap between primary and immortal NP cells yielded high-confidence NP-specific marker genes for NP-R (CLDN11, TMEFF2, CA12, ANXA2, CD44) and NP-nR (EFNA1, NETO2, SLC2A1). Overlap between AF and immortal AF subtypes yielded specific markers for AF-S (COLEC12, LPAR1) and AF-nS (CHIC1). CONCLUSIONS The current study provides a reference platform for preclinical evaluation of novel membrane-associated cell type-specific markers in the IVD. Future research will focus on their biological relevance for IVD function in development, homeostasis, and degenerate conditions.
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Affiliation(s)
- Guus G. H. van den Akker
- Department of Orthopedic Surgery, Maastricht University Medical Centre, Maastricht, Netherlands
- Department of Molecular Genetics, Maastricht University Medical Centre, Maastricht, Netherlands
| | - Lars M. T. Eijssen
- Department of Bioinformatics, Maastricht University Medical Centre, Maastricht, Netherlands
| | - Stephen M. Richardson
- Centre for Regenerative Medicine, Institute of Inflammation and Repair, University of Manchester, Manchester, UK
| | - Lodewijk W. van Rhijn
- Department of Orthopedic Surgery, Maastricht University Medical Centre, Maastricht, Netherlands
| | - Judith A. Hoyland
- Centre for Regenerative Medicine, Institute of Inflammation and Repair, University of Manchester, Manchester, UK
| | - Tim J. M. Welting
- Department of Orthopedic Surgery, Maastricht University Medical Centre, Maastricht, Netherlands
| | - Jan Willem Voncken
- Department of Molecular Genetics, Maastricht University Medical Centre, Maastricht, Netherlands
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23
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Binch ALA, Richardson SM, Hoyland JA, Barry FP. Combinatorial conditioning of adipose derived-mesenchymal stem cells enhances their neurovascular potential: Implications for intervertebral disc degeneration. JOR Spine 2019; 2:e1072. [PMID: 31891121 PMCID: PMC6920684 DOI: 10.1002/jsp2.1072] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 10/26/2019] [Accepted: 10/30/2019] [Indexed: 12/19/2022] Open
Abstract
BACKGROUND Mesenchymal stem cells (MSCs) are becoming an increasingly attractive option for regenerative therapies due to their availability, self-renewal capacity, multilineage potential, and anti-inflammatory properties. Clinical trials are underway to test the efficacy of stem cell-based therapies for the repair and regeneration of the degenerate intervertebral disc (IVD), a major cause of back pain. Recently, both bone marrow-derived MSCs and adipose-derived stem cells (ASCs) have been assessed for IVD therapy but there is a lack of knowledge surrounding the optimal cell source and the response of transplanted cells to the low oxygen, pro-inflammatory niche of the degenerate disc. Here, we investigated several neurovascular factors from donor-matched MSCs and ASCs that may potentiate the survival and persistence of sensory nerve fibers and blood vessels present within painful degenerate discs and their regulation by oxygen tensions and inflammatory cytokines. METHODS Donor-matched ASCs and MSCs were conditioned with either IL-1β or TNFα under normoxic (21% O2) or hypoxic (5% O2) conditions. Expression and secretion of several potent neurovascular factors were assessed using qRT-PCR and human magnetic Luminex assay. RESULTS ASCs and MSCs expressed constitutive levels of key neurotrophic factors; and stimulation of ASCs with hypoxia triggered increased secretion of both angiogenic factors (Ang-2 and VEGF-A) and neurotrophic (NGF and NT-3) compared to MSCs. We also report increased transcriptional regulation of pain-associated neuropeptides in hypoxia stimulated ASCs compared to those in normoxic conditions. We demonstrate transcriptional and translational upregulation of NGF, NT-3, Ang-1, and FGF-2 in response to cytokines in ASCs in 21% and 5% O2. CONCLUSIONS This work highlights fundamental differences between the neurovascular secretome of donor-matched ASCs and MSCs, demonstrating the importance of cell-selection for tissue specific regeneration to reduce ectopic sensory nerve and blood vessel survival and improve patient outcomes.
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Affiliation(s)
- Abbie. L. A. Binch
- Regenerative Medicine Institute (REMEDI), National University of Ireland Galway (NUI Galway)GalwayIreland
| | - Stephen M. Richardson
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and HealthManchester Academic Health Sciences Centre, University of ManchesterManchesterUK
| | - Judith A. Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and HealthManchester Academic Health Sciences Centre, University of ManchesterManchesterUK
- NIHR Manchester Biomedical Research Centre, Central Manchester Foundation Trust, Manchester Academic Health Science CentreManchesterUK
| | - Frank P. Barry
- Regenerative Medicine Institute (REMEDI), National University of Ireland Galway (NUI Galway)GalwayIreland
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24
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Pérez-Madrigal MM, Shaw JE, Arno MC, Hoyland JA, Richardson SM, Dove AP. Robust alginate/hyaluronic acid thiol-yne click-hydrogel scaffolds with superior mechanical performance and stability for load-bearing soft tissue engineering. Biomater Sci 2019; 8:405-412. [PMID: 31729512 DOI: 10.1039/c9bm01494b] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Hydrogels based on hyaluronic acid (HA) exhibit great potential as tissue engineering (TE) scaffolds as a consequence of their unique biological features. Herein, we examine how the advantages of two natural polymers (i.e. HA and alginate) are combined with the efficiency and rapid nature of the thiol-yne click chemistry reaction to obtain biocompatible matrices with tailored properties. Our injectable click-hydrogels revealed excellent mechanical performance, long-term stability, high cytocompatibility and adequate stiffness for the targeted application. This simple approach yielded HA hydrogels with characteristics that make them suitable for applications as 3D scaffolds to support and promote soft tissue regeneration.
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Affiliation(s)
| | - Joshua E Shaw
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, University of Manchester, Manchester M13 9PT, UK
| | - Maria C Arno
- School of Chemistry, University of Birmingham Edgbaston, Birmingham, B15 2TT, UK.
| | - Judith A Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, University of Manchester, Manchester M13 9PT, UK and NIHR Manchester Biomedical Research Centre, Central Manchester Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK
| | - Stephen M Richardson
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, Manchester Academic Health Science Centre, University of Manchester, Manchester M13 9PT, UK
| | - Andrew P Dove
- School of Chemistry, University of Birmingham Edgbaston, Birmingham, B15 2TT, UK.
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25
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Wu S, Zhu M, Lu D, Milani AH, Lian Q, Fielding LA, Saunders BR, Derry MJ, Armes SP, Adlam D, Hoyland JA. Self-curing super-stretchable polymer/microgel complex coacervate gels without covalent bond formation. Chem Sci 2019; 10:8832-8839. [PMID: 31803457 PMCID: PMC6849882 DOI: 10.1039/c9sc02555c] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2019] [Accepted: 08/02/2019] [Indexed: 12/25/2022] Open
Abstract
Elastic physical gels are highly desirable because they can be conveniently prepared and readily shaped. Unfortunately, many elastic physical gels prepared in water require in situ free-radical polymerization during the gel formation stage. In contrast, complex coacervate gels are physical gels that can be prepared by simply mixing two pre-formed oppositely-charged polyelectrolytes. However, as far as we are aware, highly elastic complex coacervate gels have not yet been reported. Herein, we combine polyanionic microgel particles with a well-known commercially-available cationic polyelectrolyte to prepare polymer/microgel complex coacervate (PMCC) physical gels. This new family of gels requires annealing at only 37 °C and behaves like a covalent gel but does not form covalent bonds. Thermal reconfiguration of the dynamic ionic bonds transforms the shapeable pre-gel into a highly elastic gel that is super-stretchable, adhesive, self-healing, highly swellable and can be further toughened using Ca2+ as an ionic crosslinker. Our PMCC gels have excellent potential for applications as engineering gels and structural biomaterials, as well as for wound healing and water purification.
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Affiliation(s)
- Shanglin Wu
- School of Materials , University of Manchester , MSS Tower , Manchester , M13 9PL , UK . ;
| | - Mingning Zhu
- School of Materials , University of Manchester , MSS Tower , Manchester , M13 9PL , UK . ;
| | - Dongdong Lu
- School of Materials , University of Manchester , MSS Tower , Manchester , M13 9PL , UK . ;
| | - Amir H Milani
- School of Materials , University of Manchester , MSS Tower , Manchester , M13 9PL , UK . ;
| | - Qing Lian
- School of Materials , University of Manchester , MSS Tower , Manchester , M13 9PL , UK . ;
| | - Lee A Fielding
- School of Materials , University of Manchester , MSS Tower , Manchester , M13 9PL , UK . ;
| | - Brian R Saunders
- School of Materials , University of Manchester , MSS Tower , Manchester , M13 9PL , UK . ;
| | - Matthew J Derry
- Department of Chemistry , The University of Sheffield , Dainton Building, Brook Hill , Sheffield , South Yorkshire S3 7HF , UK
| | - Steven P Armes
- Department of Chemistry , The University of Sheffield , Dainton Building, Brook Hill , Sheffield , South Yorkshire S3 7HF , UK
| | - Daman Adlam
- Division of Cell Matrix Biology and Regenerative Medicine , Faculty of Biology, Medicine and Health , University of Manchester , Oxford Road , Manchester , M13 9PT , UK
| | - Judith A Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine , Faculty of Biology, Medicine and Health , University of Manchester , Oxford Road , Manchester , M13 9PT , UK
- NIHR Manchester Biomedical Research Centre , Central Manchester Foundation Trust , Manchester Academic Health Science Centre , Manchester , M13 9WL , UK
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26
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Shanks HR, Milani AH, Lu D, Saunders BR, Carney L, Adlam DJ, Hoyland JA, Blount C, Dickinson M. Core-Shell-Shell Nanoparticles for NIR Fluorescence Imaging and NRET Swelling Reporting of Injectable or Implantable Gels. Biomacromolecules 2019; 20:2694-2702. [PMID: 31185170 PMCID: PMC7007186 DOI: 10.1021/acs.biomac.9b00463] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 05/31/2019] [Indexed: 11/29/2022]
Abstract
Injectable gels that support load are desirable for restoring the mechanical properties of degenerated load-bearing tissue. As these gels become increasingly sophisticated, the need to remotely image them and monitor their swelling increases. However, imaging such gels and monitoring their swelling using noninvasive means is challenging. Here, we use a very low concentration of near-infrared (NIR) core-shell-shell (CSS) reporter nanoparticles to both image and monitor swelling changes of two load-supporting gels. The load-supporting injectable gel consisted of covalently interlinked pH-responsive microgel (MG) particles. The latter gel was not cytotoxic and is termed a doubly cross-linked microgel (DX MG). Inclusion of a complementary fluorescent dye enabled ratiometric monitoring of gel swelling changes in response to pH via nonradiative resonance energy transfer (NRET). In addition, changes in the CSS nanoparticle emission intensity provided a NIR-only method that could also be used to monitor gel swelling. The gel was able to be imaged using NIR light, after being subcutaneously injected into a tissue model. To demonstrate versatility of our approach, CSS and the dye were included within a model implantable gel (poly(acrylamide/acrylic acid)) and fluorescent detection of swelling investigated. Because the concentrations of the reporting species were too low to affect the mechanical properties, our approach to remote gel imaging and swelling monitoring has good potential for application in injectable gels and implants.
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Affiliation(s)
- Hannah R. Shanks
- School
of Materials, University of Manchester, MSS Tower, Manchester, M13 9PL, U.K.
| | - Amir H. Milani
- School
of Materials, University of Manchester, MSS Tower, Manchester, M13 9PL, U.K.
| | - Dongdong Lu
- School
of Materials, University of Manchester, MSS Tower, Manchester, M13 9PL, U.K.
| | - Brian R. Saunders
- School
of Materials, University of Manchester, MSS Tower, Manchester, M13 9PL, U.K.
| | - Louise Carney
- School
of Materials, University of Manchester, MSS Tower, Manchester, M13 9PL, U.K.
| | - Daman J. Adlam
- Division
of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology,
Medicine and Health, University of Manchester, Oxford Road, Manchester, M13 9PT, U.K.
| | - Judith A. Hoyland
- Division
of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology,
Medicine and Health, University of Manchester, Oxford Road, Manchester, M13 9PT, U.K.
- NIHR
Manchester Biomedical Research Centre, Manchester University NHS Foundation
Trust, Manchester Academic Health Science
Centre, Manchester, M20 2LR, U.K.
| | - Christopher Blount
- Photon
Science Institute, University of Manchester, Oxford Road, Manchester, M13 9PL, U.K.
- School
of Physics & Astronomy, University of
Manchester, Oxford Road, Manchester, M13 9PL, U.K.
| | - Mark Dickinson
- Photon
Science Institute, University of Manchester, Oxford Road, Manchester, M13 9PL, U.K.
- School
of Physics & Astronomy, University of
Manchester, Oxford Road, Manchester, M13 9PL, U.K.
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27
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Ligorio C, Zhou M, Wychowaniec JK, Zhu X, Bartlam C, Miller AF, Vijayaraghavan A, Hoyland JA, Saiani A. Graphene oxide containing self-assembling peptide hybrid hydrogels as a potential 3D injectable cell delivery platform for intervertebral disc repair applications. Acta Biomater 2019; 92:92-103. [PMID: 31091473 PMCID: PMC6582688 DOI: 10.1016/j.actbio.2019.05.004] [Citation(s) in RCA: 66] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 05/02/2019] [Accepted: 05/03/2019] [Indexed: 12/23/2022]
Abstract
Cell-based therapies have shown significant promise in tissue engineering with one key challenge being the delivery and retention of cells. As a result, significant efforts have been made in the past decade to design injectable biomaterials to host and deliver cells at injury sites. Intervertebral disc (IVD) degeneration, a major cause of back pain, is a particularly relevant example where a minimally-invasive cellular therapy could bring significant benefits specifically at the early stages of the disease, when a cell-driven process starts in the gelatinous core of the IVD, the nucleus pulposus (NP). In this present study we explore the use of graphene oxide (GO) as nano-filler for the reinforcement of FEFKFEFK (β-sheet forming self-assembling peptide) hydrogels. Our results confirm the presence of strong interactions between FEFKFEFK and GO flakes with the peptide coating and forming short thin fibrils on the surface of the flakes. These strong interactions were found to affect the bulk properties of hybrid hydrogels. At pH 4 electrostatic interactions between the peptide fibres and the peptide-coated GO flakes are thought to govern the final bulk properties of the hydrogels while at pH 7, after conditioning with cell culture media, electrostatic interactions are removed leaving the hydrophobic interactions to govern hydrogel final properties. The GO-F820 hybrid hydrogel, with mechanical properties similar to the NP, was shown to promote high cell viability and retained cell metabolic activity in 3D over the 7 days of culture and therefore shown to harbour significant potential as an injectable hydrogel scaffold for the in-vivo delivery of NP cells. Statement of Significance Short self-assembling peptide hydrogels (SAPHs) have attracted significant interest in recent years as they can mimic the natural extra-cellular matrix, holding significant promise for the ab initio design of cells’ microenvironments. Recently the design of hybrid hydrogels for biomedical applications has been explored through the incorporation of specific nanofillers. In this study we exploited graphene oxide (GO) as nanofiller to design hybrid injectable 3Dscaffolds for the delivery of nucleus pulposus cells (NPCs) for intervertebral disc regeneration. Our work clearly shows the presence of strong interactions between peptide and GO, mimicking the mechanical properties of the NP tissue and promoting high cell viability and metabolic activity. These hybrid hydrogels therefore harbour significant potential as injectable scaffolds for the in vivo delivery of NPCs.
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28
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Hodgkinson T, Stening JZ, White LJ, Shakesheff KM, Hoyland JA, Richardson SM. Microparticles for controlled growth differentiation factor 6 delivery to direct adipose stem cell-based nucleus pulposus regeneration. J Tissue Eng Regen Med 2019; 13:1406-1417. [PMID: 31066515 PMCID: PMC6771973 DOI: 10.1002/term.2882] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Revised: 03/28/2019] [Accepted: 04/29/2019] [Indexed: 12/11/2022]
Abstract
Currently, there is no effective long‐term treatment for intervertebral disc (IVD) degeneration, making it an attractive candidate for regenerative therapies. Hydrogel delivery of adipose stem cells (ASCs) in combination with controlled release of bioactive molecules is a promising approach to halt IVD degeneration and promote regeneration. Growth differentiation factor 6 (GDF6) can induce ASC differentiation into anabolic nucleus pulposus (NP) cells and hence holds promise for IVD regeneration. Here, we optimised design of novel poly(DL‐lactic acid‐co‐glycolic acid) (PLGA)–polyethylene glycol–PLGA microparticles to control GDF6 delivery and investigated effect of released GDF6 on human ASCs differentiation to NP cells. Recombinant human (rh)GDF6 was loaded into microparticles and total protein and rhGDF6 release assessed. The effect of microparticle loading density on distribution and gel formation was investigated through scanning electron microscopy. ASC differentiation to NP cells was examined after 14 days in hydrogel culture by quantitative polymerase chain reaction, histological, and immunohistochemical staining in normoxic and IVD‐like hypoxic conditions. RhGDF6 microparticles were distributed throughout gels without disrupting gelation and controlled rhGDF6 release over 14 days. Released GDF6 significantly induced NP differentiation of ASCs, with expression comparable with or exceeding media supplemented rhGDF6. Microparticle‐delivered rhGDF6 also up‐regulated sulphated glycosaminoglycan and aggrecan secretion in comparison with controls. In hypoxia, microparticle‐delivered rhGDF6 continued to effectively induce NP gene expression and aggrecan production. This study demonstrates the effective encapsulation and controlled delivery of rhGDF6, which maintained its activity and induced ASC differentiation to NP cells and synthesis of an NP‐like matrix suggesting suitability of microparticles for controlled growth factor release in regenerative strategies for treatment of IVD degeneration.
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Affiliation(s)
- Tom Hodgkinson
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK
| | - Jasmine Z Stening
- Division of Regenerative Medicine and Cellular Therapies, School of Pharmacy, Faculty of Science, University of Nottingham, Nottingham, UK
| | - Lisa J White
- Division of Regenerative Medicine and Cellular Therapies, School of Pharmacy, Faculty of Science, University of Nottingham, Nottingham, UK
| | - Kevin M Shakesheff
- Division of Regenerative Medicine and Cellular Therapies, School of Pharmacy, Faculty of Science, University of Nottingham, Nottingham, UK
| | - Judith A Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK.,Central Manchester Foundation Trust, Manchester Academic Health Science Centre, NIHR Manchester Biomedical Research Centre, Manchester, UK
| | - Stephen M Richardson
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester, UK
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29
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Nguyen NT, Milani AH, Jennings J, Adlam DJ, Freemont AJ, Hoyland JA, Saunders BR. Highly compressive and stretchable poly(ethylene glycol) based hydrogels synthesised using pH-responsive nanogels without free-radical chemistry. Nanoscale 2019; 11:7921-7930. [PMID: 30964497 DOI: 10.1039/c9nr01535c] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Poly(ethylene glycol) (PEG) based hydrogels are amongst the most studied synthetic hydrogels. However, reports on PEG-based hydrogels with high mechanical strength are limited. Herein, a class of novel, well-defined PEG-based nanocomposite hydrogels with tunable mechanical strength are synthesised via ring-opening reactions of diglycidyl ethers with carboxylate ions. The pH responsive crosslinked polyacid nanogels (NG) in the dispersed phase act as high functionality crosslinkers which covalently bond to the poly(ethylene glycol) diglycidyl ethers (PEGDGE) as the continuous matrix. A series of NG-x-PEG-y-z gels are prepared where x, y and z are concentrations of NGs, PEGDGE and the PEGDGE molecular weight, respectively. The hydrogel compositions and nano-structural homogeneity of the NGs have strong impact on the enhancement of mechanical properties which enables property tuning. Based on this design, a highly compressive PEG-based nanocomposite hydrogel (NG-13-PEG-20-6000) exhibits a compressive stress of 24.2 MPa, compressive fracture strain greater than 98% and a fracture energy density as high as 1.88 MJ m-3. The tensile fracture strain is 230%. This is amongst one of the most compressive PEG-based hydrogels reported to-date. Our chemically crosslinked gels are resilient and show highly recoverable dissipative energy. The cytotoxicity test shows that human nucleus pulposus (NP) cells remained viable after 8 days of culture time. The overall results highlight their potential for applications as replacements for intervertebral discs or articular cartilages.
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Affiliation(s)
- Nam T Nguyen
- School of Materials, University of Manchester, Manchester, M13 9PL, UK.
| | - Amir H Milani
- School of Materials, University of Manchester, Manchester, M13 9PL, UK.
| | - James Jennings
- Department of Chemistry, University of Sheffield, Brook Hill, Sheffield, South Yorkshire S3 7HF, UK
| | - Daman J Adlam
- Division of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, M13 9PT, UK
| | - Anthony J Freemont
- Division of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, M13 9PT, UK
| | - Judith A Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, M13 9PT, UK and NIHR Manchester Biomedical Research Centre, Manchester University NHS foundation Trust, Manchester Academic Health Science Centre, M13 9WL, UK
| | - Brian R Saunders
- School of Materials, University of Manchester, Manchester, M13 9PL, UK.
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30
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Hodgkinson T, Shen B, Diwan A, Hoyland JA, Richardson SM. Therapeutic potential of growth differentiation factors in the treatment of degenerative disc diseases. JOR Spine 2019; 2:e1045. [PMID: 31463459 PMCID: PMC6686806 DOI: 10.1002/jsp2.1045] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/07/2018] [Revised: 01/16/2019] [Accepted: 02/04/2019] [Indexed: 02/06/2023] Open
Abstract
Intervertebral disc (IVD) degeneration is a major contributing factor to chronic low back pain and disability, leading to imbalance between anabolic and catabolic processes, altered extracellular matrix composition, loss of tissue hydration, inflammation, and impaired mechanical functionality. Current treatments aim to manage symptoms rather than treat underlying pathology. Therefore, IVD degeneration is a target for regenerative medicine strategies. Research has focused on understanding the molecular process of degeneration and the identification of various factors that may have the ability to halt and even reverse the degenerative process. One such family of growth factors, the growth differentiation factor (GDF) family, have shown particular promise for disc regeneration in in vitro and in vivo models of IVD degeneration. This review outlines our current understanding of IVD degeneration, and in this context, aims to discuss recent advancements in the use of GDF family members as anabolic factors for disc regeneration. An increasing body of evidence indicates that GDF family members are central to IVD homeostatic processes and are able to upregulate healthy nucleus pulposus cell marker genes in degenerative cells, induce mesenchymal stem cells to differentiate into nucleus pulposus cells and even act as chemotactic signals mobilizing resident cell populations during disc injury repair. The understanding of GDF signaling and its interplay with inflammatory and catabolic processes may be critical for the future development of effective IVD regeneration therapies.
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Affiliation(s)
- Tom Hodgkinson
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of ManchesterManchester Academic Health Sciences CentreManchesterUK
- Centre for the Cellular Microenvironment, Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary and Life SciencesUniversity of GlasgowGlasgowUK
| | - Bojiang Shen
- St. George Clinical SchoolUniversity of New South WalesSydneyNew South WalesAustralia
| | - Ashish Diwan
- St. George Clinical SchoolUniversity of New South WalesSydneyNew South WalesAustralia
| | - Judith A. Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of ManchesterManchester Academic Health Sciences CentreManchesterUK
- NIHR Manchester Biomedical Research Centre, Manchester University Foundation TrustManchester Academic Health Sciences CentreManchesterUK
| | - Stephen M. Richardson
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of ManchesterManchester Academic Health Sciences CentreManchesterUK
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31
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Lu D, Zhu M, Wang W, Wu S, Saunders BR, Adlam DJ, Hoyland JA, Hofzumahaus C, Schneider S, Landfester K. Do the properties of gels constructed by interlinking triply-responsive microgels follow from those of the building blocks? Soft Matter 2019; 15:527-536. [PMID: 30444236 DOI: 10.1039/c8sm01510d] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Microgels (MGs) are swellable crosslinked polymer colloids. They can also be used as the only building block to construct nanostructured hydrogels which are denoted as doubly crosslinked microgels (DX MGs). Here, new triply responsive DX MGs comprised of interlinked MGs of oligo(ethylene glycol)methacrylate (OEGMA), 2-(2-methoxyethoxy)ethyl methacrylate (MEO2MA), methacrylic acid (MAA) and a o-nitrobenzyl-based UV photocleavable crosslinker are investigated. The MGs swelled or collapsed in response to temperature and pH changes. These behaviours were rationalised with a generic model using Monte Carlo simulations. The MGs also degraded when UV irradiated due to photocleavage of nPh. DX MGs were assembled from the MGs to give injectable gels that were not cytotoxic to nucleus pulposus cells. Comparison of the responsive properties of the DX MGs and MGs showed that the temperature and pH responses of the former were mostly governed by the latter. However, two key differences were found. Firstly, whilst increasing the crosslinker mol% in the MG building blocks (x) did not change MG particle swelling, the compression modulus (E) and swelling of the DX MG gels were strongly affected by x. The E value for the gels was tuneable using x which is a potentially useful new observation for DX MGs. Secondly, UV irradiation of the DX MGs enhanced gel mechanical photostability in contrast to the behaviour of the MGs. We find that the properties of the DX MGs do not simply follow those of the parent MGs and propose mechanisms to account for the differences. The new family of multi-responsive DX MGs presented in this study have potential application for soft tissue repair as injectable gels or as gel implants which report sterilisation.
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Affiliation(s)
- Dongdong Lu
- School of Materials, University of Manchester, MSS Tower, Manchester, M13 9PL, UK.
| | - Mingning Zhu
- School of Materials, University of Manchester, MSS Tower, Manchester, M13 9PL, UK.
| | - Wenkai Wang
- School of Materials, University of Manchester, MSS Tower, Manchester, M13 9PL, UK.
| | - Shanglin Wu
- School of Materials, University of Manchester, MSS Tower, Manchester, M13 9PL, UK.
| | - Brian R Saunders
- School of Materials, University of Manchester, MSS Tower, Manchester, M13 9PL, UK.
| | - Daman J Adlam
- Division of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, M13 9PT, UK
| | - Judith A Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, M13 9PT, UK and NIHR Manchester Musculoskeletal Biomedical Research Centre, Manchester University NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK
| | - Cornelius Hofzumahaus
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D-52056, Aachen, Germany
| | - Stefanie Schneider
- Institute of Physical Chemistry, RWTH Aachen University, Landoltweg 2, D-52056, Aachen, Germany
| | - Katharina Landfester
- Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany
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32
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Wu S, Zhu M, Lian Q, Lu D, Spencer B, Adlam DJ, Hoyland JA, Volk K, Karg M, Saunders BR. Plasmonic and colloidal stability behaviours of Au-acrylic core-shell nanoparticles with thin pH-responsive shells. Nanoscale 2018; 10:18565-18575. [PMID: 30259044 DOI: 10.1039/c8nr07440b] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The localised surface plasmon resonance (LSPR) of Au nanoparticles (NPs) as well as its interaction with nearby entities provides a wealth of fundamental and practical information at the nanometre scale. A number of studies have investigated core-shell NPs with Au cores and polymer shells that are temperature-responsive. However, there are very few studies of pH-responsive Au-polymer NP shells. Precipitation polymerisation is a scalable method and here we establish such a method to synthesise pH-responsive Au-poly(methyl methacrylate) copolymer core-shell NPs without the need for pre-functionalisation. The comonomers used were methacrylic acid (MAA) or 2-carboxyethyl acrylate (CEA) and the shells were crosslinked with ethylene glycol dimethacrylate. A series of five core-shell systems with collapsed shell thicknesses less than 30 nm are studied. The shell-thicknesses for the CEA-based core-shell NPs are relatively thin (≤5 nm) compared to related Au-polymer core-shell NPs prepared using precipitation polymerisation. The LSPR properties of the core-shell NPs were dependent on the shell thickness and were successfully simulated using finite difference time domain (FDTD) calculations. Two systems are considered further as exemplars. The MAA-based core-shell system with the thickest shell exhibited enhanced colloidal stability to added electrolyte. The CEA-based core-shell dispersion with the thinnest shells displayed reversible pH-triggered aggregation and was cytocompatible for HeLa cells. Proof-of-concept data are presented that demonstrate intracellular pH reporting.
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Affiliation(s)
- Shanglin Wu
- School of Materials, University of Manchester, MSS Tower, Manchester, M13 9PL, UK.
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33
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Humphreys MD, Ward L, Richardson SM, Hoyland JA. An optimized culture system for notochordal cell expansion with retention of phenotype. JOR Spine 2018; 1:e1028. [PMID: 31463448 PMCID: PMC6686815 DOI: 10.1002/jsp2.1028] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 06/19/2018] [Accepted: 06/21/2018] [Indexed: 12/27/2022] Open
Abstract
BACKGROUND Notochordal (NC) cells display therapeutic potential in treating degeneration of the intervertebral disc. However, research on their phenotype and function is limited by low-cell yields and a lack of appropriate methodology for cell expansion. Utilizing porcine cells, this study aimed to develop an optimized culture system which allows expansion of NC cell populations with retention of phenotype. METHODS Post-natal porcine and foetal human nucleus pulposus tissue was compared histologically and expression of known NC cell marker genes by porcine NC cells was analyzed. Porcine NC cells were isolated from six-week post-natal discs and cultured in vitro under varied conditions: (1) DMEM vs αMEM; (2) laminin-521, fibronectin, gelatin and uncoated tissue culture-treated polystyrene (TCP); (3) 2% O2 vs normoxia; (4) αMEM (300 mOsm/L) vs αMEM (400 mOsm/L); (5) surface stiffness of 0.5 and 4 kPa and standard TCP. Adherence, proliferation, morphology and expression of NC cell markers were assessed over a 14-day culture period. RESULTS Native porcine nucleus pulposus tissue demonstrated similar morphology to human foetal tissue and porcine NC cells expressed known notochordal markers (CD24, KRT8, KRT18, KRT19, and T). Use of αMEM media and laminin-521-coated surfaces showed the greatest cell adherence, proliferation and retention of NC cell morphology and phenotype. Proliferation of NC cell populations was further enhanced in hypoxia (2%) and phenotypic retention was improved on 0.5 kPa culture surfaces. DISCUSSION Our model has demonstrated an optimized system in which NC cell populations may be expanded while retaining a notochordal phenotype. Application of this optimized culture system will enable NC cell expansion for detailed phenotypic and functional study, a major advantage over current culture methods described in the literature. Furthermore, the similarities identified between porcine and human NC cells suggest this system will be applicable in human NC cell culture for investigation of their therapeutic potential.
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Affiliation(s)
- Matthew D. Humphreys
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and HealthUniversity of ManchesterManchesterUK
| | - Lizzy Ward
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and HealthUniversity of ManchesterManchesterUK
| | - Stephen M. Richardson
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and HealthUniversity of ManchesterManchesterUK
| | - Judith A. Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and HealthUniversity of ManchesterManchesterUK
- NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester Foundation Trust, Manchester Academic Health Science CentreManchesterUK
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34
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Buckley CT, Hoyland JA, Fujii K, Pandit A, Iatridis JC, Grad S. Critical aspects and challenges for intervertebral disc repair and regeneration-Harnessing advances in tissue engineering. JOR Spine 2018; 1:e1029. [PMID: 30895276 PMCID: PMC6400108 DOI: 10.1002/jsp2.1029] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Revised: 06/30/2018] [Accepted: 07/02/2018] [Indexed: 02/06/2023] Open
Abstract
Low back pain represents the highest burden of musculoskeletal diseases worldwide and intervertebral disc degeneration is frequently associated with this painful condition. Even though it remains challenging to clearly recognize generators of discogenic pain, tissue regeneration has been accepted as an effective treatment option with significant potential. Tissue engineering and regenerative medicine offer a plethora of exploratory pathways for functional repair or prevention of tissue breakdown. However, the intervertebral disc has extraordinary biological and mechanical demands that must be met to assure sustained success. This concise perspective review highlights the role of the disc microenvironment, mechanical and clinical design considerations, function vs mimicry in biomaterial‐based and cell engineering strategies, and potential constraints for clinical translation of regenerative therapies for the intervertebral disc.
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Affiliation(s)
- Conor T Buckley
- Trinity Centre for Bioengineering, Trinity Biomedical Sciences Institute Trinity College Dublin, The University of Dublin Dublin Ireland.,School of Engineering, Trinity College Dublin The University of Dublin Dublin Ireland.,Advanced Materials and Bioengineering Research (AMBER) Centre Royal College of Surgeons in Ireland & Trinity College Dublin, The University of Dublin Dublin Ireland
| | - Judith A Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine University of Manchester Manchester UK.,NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester Foundation Trust Manchester Academic Health Science Centre Manchester UK
| | - Kengo Fujii
- Leni & Peter W. May Department of Orthopaedics Icahn School of Medicine at Mount Sinai New York New York USA.,Department of Orthopaedic Surgery University of Tsukuba Tsukuba Japan
| | - Abhay Pandit
- Centre for Research in Medical Devices (CÚRAM) National University of Ireland Galway Ireland
| | - James C Iatridis
- Leni & Peter W. May Department of Orthopaedics Icahn School of Medicine at Mount Sinai New York New York USA
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35
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Wychowaniec JK, Iliut M, Zhou M, Moffat J, Elsawy MA, Pinheiro WA, Hoyland JA, Miller AF, Vijayaraghavan A, Saiani A. Designing Peptide/Graphene Hybrid Hydrogels through Fine-Tuning of Molecular Interactions. Biomacromolecules 2018; 19:2731-2741. [PMID: 29672029 DOI: 10.1021/acs.biomac.8b00333] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A recent strategy that has emerged for the design of increasingly functional hydrogels is the incorporation of nanofillers in order to exploit their specific properties to either modify the performance of the hydrogel or add functionality. The emergence of carbon nanomaterials in particular has provided great opportunity for the use of graphene derivatives (GDs) in biomedical applications. The key challenge when designing hybrid materials is the understanding of the molecular interactions between the matrix (peptide nanofibers) and the nanofiller (here GDs) and how these affect the final properties of the bulk material. For the purpose of this work, three gelling β-sheet-forming, self-assembling peptides with varying physiochemical properties and five GDs with varying surface chemistries were chosen to formulate novel hybrid hydrogels. First the peptide hydrogels and the GDs were characterized; subsequently, the molecular interaction between peptides nanofibers and GDs were probed before formulating and mechanically characterizing the hybrid hydrogels. We show how the interplay between electrostatic interactions, which can be attractive or repulsive, and hydrophobic (and π-π in the case of peptide containing phenylalanine) interactions, which are always attractive, play a key role on the final properties of the hybrid hydrogels. The shear modulus of the hydrid hydrogels is shown to be related to the strength of fiber adhesion to the flakes, the overall hydrophobicity of the peptides, as well as the type of fibrillar network formed. Finally, the cytotoxicity of the hybrid hydrogel formed at pH 6 was also investigated by encapsulating and culturing human mesemchymal stem cells (hMSC) over 14 days. This work clearly shows how interactions between peptides and GDs can be used to tailor the mechanical properties of the resulting hydrogels, allowing the incorporation of GD nanofillers in a controlled way and opening the possibility to exploit their intrinsic properties to design novel hybrid peptide hydrogels for biomedical applications.
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Affiliation(s)
- Jacek K Wychowaniec
- School of Materials , The University of Manchester , Oxford Road , M13 9PL , Manchester , United Kingdom.,Manchester Institute of Biotechnology , The University of Manchester , Oxford Road , M13 9PL , Manchester , United Kingdom
| | - Maria Iliut
- School of Materials , The University of Manchester , Oxford Road , M13 9PL , Manchester , United Kingdom.,National Graphene Institute , The University of Manchester , Booth Street East , M13 9PL , Manchester , United Kingdom
| | - Mi Zhou
- Division of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology, Medicine and Health , The University of Manchester , M13 9PL , Manchester , United Kingdom
| | - Jonathan Moffat
- UK Asylum Research, An Oxford Instruments Company , Halifax Road , HP12 3SE , High Wycombe , United Kingdom
| | - Mohamed A Elsawy
- School of Materials , The University of Manchester , Oxford Road , M13 9PL , Manchester , United Kingdom.,Manchester Institute of Biotechnology , The University of Manchester , Oxford Road , M13 9PL , Manchester , United Kingdom
| | - Wagner A Pinheiro
- School of Materials , The University of Manchester , Oxford Road , M13 9PL , Manchester , United Kingdom.,Military Institute of Engineering , Praça Gen Tibúrcio 80 , Urca, Rio de Janeiro , Rio de Janeiro 22290-270 , Brazil
| | - Judith A Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology, Medicine and Health , The University of Manchester , M13 9PL , Manchester , United Kingdom.,NIHR Manchester Musculoskeletal Biomedical Research Centre, Manchester Academic Health Science Centre , Central Manchester NHS Foundation Trust , Manchester M23 9LT , United Kingdom
| | - Aline F Miller
- Manchester Institute of Biotechnology , The University of Manchester , Oxford Road , M13 9PL , Manchester , United Kingdom.,School of Chemical Engineering and Analytical Sciences , The University of Manchester, M13 9PL , Manchester , United Kingdom
| | - Aravind Vijayaraghavan
- School of Materials , The University of Manchester , Oxford Road , M13 9PL , Manchester , United Kingdom.,National Graphene Institute , The University of Manchester , Booth Street East , M13 9PL , Manchester , United Kingdom
| | - Alberto Saiani
- School of Materials , The University of Manchester , Oxford Road , M13 9PL , Manchester , United Kingdom.,Manchester Institute of Biotechnology , The University of Manchester , Oxford Road , M13 9PL , Manchester , United Kingdom
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36
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Disney CM, Lee PD, Hoyland JA, Sherratt MJ, Bay BK. A review of techniques for visualising soft tissue microstructure deformation and quantifying strain Ex Vivo. J Microsc 2018; 272:165-179. [PMID: 29655273 DOI: 10.1111/jmi.12701] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2018] [Revised: 03/08/2018] [Accepted: 03/16/2018] [Indexed: 12/16/2022]
Abstract
Many biological tissues have a complex hierarchical structure allowing them to function under demanding physiological loading conditions. Structural changes caused by ageing or disease can lead to loss of mechanical function. Therefore, it is necessary to characterise tissue structure to understand normal tissue function and the progression of disease. Ideally intact native tissues should be imaged in 3D and under physiological loading conditions. The current published in situ imaging methodologies demonstrate a compromise between imaging limitations and maintaining the samples native mechanical function. This review gives an overview of in situ imaging techniques used to visualise microstructural deformation of soft tissue, including three case studies of different tissues (tendon, intervertebral disc and artery). Some of the imaging techniques restricted analysis to observational mechanics or discrete strain measurement from invasive markers. Full-field local surface strain measurement has been achieved using digital image correlation. Volumetric strain fields have successfully been quantified from in situ X-ray microtomography (micro-CT) studies of bone using digital volume correlation but not in soft tissue due to low X-ray transmission contrast. With the latest developments in micro-CT showing in-line phase contrast capability to resolve native soft tissue microstructure, there is potential for future soft tissue mechanics research where 3D local strain can be quantified. These methods will provide information on the local 3D micromechanical environment experienced by cells in healthy, aged and diseased tissues. It is hoped that future applications of in situ imaging techniques will impact positively on the design and testing of potential tissue replacements or regenerative therapies. LAY DESCRIPTION: The soft tissues in our bodies, such as tendons, intervertebral discs and arteries, have evolved to have complicated structures which deform and bear load during normal function. Small changes in these structures can occur with age and disease which then leads to loss of function. Therefore, it is important to image tissue microstructure in 3D and under functional conditions. This paper gives an overview of imaging techniques used to record the deformation of soft tissue microstructures. Commonly there are compromises between obtaining the best imaging result and retaining the samples native structure and function. For example, invasive markers and dissecting samples damages the tissues natural structure, and staining or clearing (making the tissue more transparent) can distort tissue structure. Structural deformation has been quantified from 2D imaging techniques (digital image correlation) to create surface strain maps which help identify local tissue mechanics. When extended to 3D (digital volume correlation), deformation measurement has been limited to bone samples using X-ray micro-CT. Recently it has been possible to image the 3D structure of soft tissue using X-ray micro-CT meaning that there is potential for internal soft tissue mechanics to be mapped in 3D. Future application of micro-CT and digital volume correlation will be important for soft tissue mechanics studies particularly to understand normal function, progression of disease and in the design of tissue replacements.
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Affiliation(s)
- C M Disney
- Centre for Doctoral Training in Regenerative Medicine, University of Manchester, Manchester, U.K.,Division of Cell Matrix Biology and Regenerative Medicine, University of Manchester, Manchester, U.K
| | - P D Lee
- School of Materials, University of Manchester, Manchester, U.K
| | - J A Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, University of Manchester, Manchester, U.K.,NIHR Manchester Biomedical Research Centre, Manchester Academic Health Science Centre, Central Manchester University Hospitals NHS Foundation Trust, Manchester, U.K
| | - M J Sherratt
- Division of Cell Matrix Biology and Regenerative Medicine, University of Manchester, Manchester, U.K
| | - B K Bay
- School of Mechanical, Industrial and Manufacturing Engineering, Oregon State University, Corvallis, Oregon, U.S.A
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37
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Martin JT, Gullbrand SE, Fields AJ, Purmessur D, Diwan AD, Oxland TR, Chiba K, Guilak F, Hoyland JA, Iatridis JC. Publication trends in spine research from 2007 to 2016: Comparison of the Orthopaedic Research Society Spine Section and the International Society for the Study of the Lumbar Spine. JOR Spine 2018; 1:e1006. [PMID: 29770804 PMCID: PMC5944392 DOI: 10.1002/jsp2.1006] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2018] [Revised: 02/14/2018] [Accepted: 02/17/2018] [Indexed: 11/06/2022] Open
Abstract
This study investigated current trends in spine publications of the membership of Orthopaedic Research Society Spine Section (ORS3) and the more global and clinically focused International Society for the Study of the Lumbar Spine (ISSLS). The PubMed database was probed to quantify trends in the overall number of articles published, the number of journals these articles were published in, and the number of active scientists producing new manuscripts. We also evaluated trends in flagship spine journals (Spine, European Spine Journal, and The Spine Journal) and in the Journal of Orthopaedic Research. The total number of active ORS3 and ISSLS authors and articles published have increased over the last 10 years. These articles are being published in hundreds of distinct journals; the number of journals is also increasing. Members of both societies published their work in Spine more than any other journal. Yet, publications in Spine decreased over the last 5 years for both ORS3 and ISSLS members, while those in European Spine Journal, and The Spine Journal remained unchanged. Furthermore, members of both societies have published in Journal of Orthopaedic Research at a consistent level. The increasing number of manuscripts and journals reflects a characteristic intrinsic to science as a whole—the global scientific workforce and output are growing and new journals are being created to accommodate the demand. These data suggest that existing spine journals do not fully serve the diverse publication needs of ORS3 and ISSLS members and highlight an unmet need for consolidating the premiere basic and translational spine research in an open access spine‐specific journal. This analysis was an important part of a decision process by the ORS to introduce JOR Spine.
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Affiliation(s)
- John T Martin
- Department of Orthopaedic Surgery Duke University Durham North Carolina USA
| | - Sarah E Gullbrand
- Department of Orthopaedic Surgery University of Pennsylvania Philadelphia Pennsylvania USA
| | - Aaron J Fields
- Department of Orthopaedic Surgery University of California San Francisco California USA
| | - Devina Purmessur
- Department of Biomedical Engineering The Ohio State University Columbus Ohio USA
| | - Ashish D Diwan
- Spine Service, St. George and Sutherland Clinical School The University of New South Wales Kogarah Australia
| | - Thomas R Oxland
- Departments of Orthopaedics and Mechanical Engineering The University of British Columbia Vancouver Canada.,International Collaboration on Repair Discoveries (ICORD) The University of British Columbia Vancouver Canada
| | - Kazuhiro Chiba
- Department of Orthopaedic Surgery National Defense Medical College Saitama Japan
| | - Farshid Guilak
- Department of Orthopaedic Surgery Washington University in St. Louis and Shriners Hospitals for Children St. Louis Missouri USA
| | - Judith A Hoyland
- Faculty of Biology, Medicine and Health, Division of Cell Matrix Biology and Regenerative Medicine The University of Manchester Manchester UK
| | - James C Iatridis
- Leni and Peter W. May Department of Orthopaedics Icahn School of Medicine at Mount Sinai New York New York USA
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38
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Hodson NW, Patel S, Richardson SM, Hoyland JA, Gilbert HTJ. Degenerate intervertebral disc-like pH induces a catabolic mechanoresponse in human nucleus pulposus cells. JOR Spine 2018; 1:e1004. [PMID: 31463436 PMCID: PMC6711490 DOI: 10.1002/jsp2.1004] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 01/22/2018] [Accepted: 02/12/2018] [Indexed: 11/07/2022] Open
Abstract
Mechanical stimulation is known to influence intervertebral disc (IVD) cell behavior and function, but the effect on disc cells is routinely considered in isolation from other microenvironmental factors. Acidic pH has been shown to be a prominent and detrimental microenvironmental factor present in degenerate IVDs, but its influence on the human disc cell mechanoresponse has never been studied. We investigated the response of agarose-encapsulated human nucleus pulposus (NP) cells to 0.004 MPa, 1.0 Hz and 1 hour of compression (Flexcell FX4000 Compression System) under pH conditions representative of nondegenerate (pH 7.1) and degenerate (pH 6.5) IVDs. Cell viability, extracellular matrix production, and expression of anabolic/anti-catabolic and catabolic genes were assessed. We report that preculture of NP cells in agarose gels was required in order for cells to be mechanoresponsive, and this correlated with increased type VI collagen, α5β1 integrin, and fibronectin expression. Furthermore, the matrix homeostatic response observed at pH 7.1 (representative of nondegenerate IVDs; increased aggrecan [AGC], tissue inhibitor of metalloproteinases-1 [TIMP1], matrix metalloproteinase-3 [MMP3], a disintegrin and metalloproteinase with thrombospondin motif-5 [ADAMTS5] gene expression) was RGD-integrin dependent, whereas only MMP3 remained mechanoresponsive at pH 6.5, and this was independent of RGD-integrins. Our findings suggest differential mechanotransduction pathways operating for specific genes, with RGD-integrin dependent AGC expression, but not RGD-independent MMP3 expression, inhibited at pH representative of degenerate IVDs (pH 6.5), which could contribute to the catabolic phenotype observed during IVD degeneration. CLINICAL SIGNIFICANCE Characterizing the influence of the mechanical and chemical intervertebral disc microenvironment on disc cells, particularly in disc degeneration, could help develop future therapeutic strategies for the treatment of discogenic back pain.
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Affiliation(s)
- Nathan W. Hodson
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and HealthUniversity of ManchesterManchesterUK
| | - Sonal Patel
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and HealthUniversity of ManchesterManchesterUK
| | - Stephen M. Richardson
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and HealthUniversity of ManchesterManchesterUK
| | - Judith A. Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and HealthUniversity of ManchesterManchesterUK
- NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester NHS Foundation TrustManchester Academic Health Science CentreManchesterUK
| | - Hamish T. J. Gilbert
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and HealthUniversity of ManchesterManchesterUK
- Wellcome Trust Centre for Cell‐Matrix Research, Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and HealthUniversity of ManchesterManchesterUK
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39
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Craddock RJ, Hodson NW, Ozols M, Shearer T, Hoyland JA, Sherratt MJ, Sherratt MJ. Extracellular matrix fragmentation in young, healthy cartilaginous tissues. Eur Cell Mater 2018; 35:34-53. [PMID: 29424418 DOI: 10.22203/ecm.v035a04] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023] Open
Abstract
Although the composition and structure of cartilaginous tissues is complex, collagen II fibrils and aggrecan are the most abundant assemblies in both articular cartilage (AC) and the nucleus pulposus (NP) of the intervertebral disc (IVD). Whilst structural heterogeneity of intact aggrecan ( containing three globular domains) is well characterised, the extent of aggrecan fragmentation in healthy tissues is poorly defined. Using young, yet skeletally mature (18-30 months), bovine AC and NP tissues, it was shown that, whilst the ultrastructure of intact aggrecan was tissue-dependent, most molecules (AC: 95 %; NP: 99.5 %) were fragmented (lacking one or more globular domains). Fragments were significantly smaller and more structurally heterogeneous in the NP compared with the AC (molecular area; AC: 8543 nm2; NP: 4625 nm2; p < 0.0001). In contrast, fibrillar collagen appeared structurally intact and tissue-invariant. Molecular fragmentation is considered indicative of a pathology; however, these young, skeletally mature tissues were histologically and mechanically (reduced modulus: AC: ≈ 500 kPa; NP: ≈ 80 kPa) comparable to healthy tissues and devoid of notable gelatinase activity (compared with rat dermis). As aggrecan fragmentation was prevalent in neonatal bovine AC (99.5 % fragmented, molecular area: 5137 nm2) as compared with mature AC (95.0 % fragmented, molecular area: 8667 nm2), it was hypothesised that targeted proteolysis might be an adaptive process that modified aggrecan packing (as simulated computationally) and, hence, tissue charge density, mechanical properties and porosity. These observations provided a baseline against which pathological and/or age-related fragmentation of aggrecan could be assessed and suggested that new strategies might be required to engineer constructs that mimic the mechanical properties of native cartilaginous tissues.
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Affiliation(s)
| | | | | | | | | | - M J Sherratt
- Faculty of Biology Medicine and Health, University of Manchester, Oxford Road, Manchester, M13 9PT,
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40
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Wang QG, Wimpenny I, Dey RE, Zhong X, Youle PJ, Downes S, Watts DC, Budd PM, Hoyland JA, Gough JE. The unique calcium chelation property of poly(vinyl phosphonic acid-co-acrylic acid) and effects on osteogenesis in vitro. J Biomed Mater Res A 2018; 106:168-179. [PMID: 28884508 PMCID: PMC5725684 DOI: 10.1002/jbm.a.36223] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 08/14/2017] [Accepted: 08/22/2017] [Indexed: 12/27/2022]
Abstract
There is a clear clinical need for a bioactive bone graft substitute. Poly(vinyl phosphonic acid-co-acrylic acid) (PVPA-co-AA) has been identified as a promising candidate for bone regeneration but there is little evidence to show its direct osteogenic effect on progenitor or mature cells. In this study mature osteoblast-like cells (SaOS-2) and human bone marrow-derived mesenchymal stem cells (hBM-MSCs) were cultured with PVPA-co-AA polymers with different VPA:AA ratio and at different concentrations in vitro. We are the first to report the direct osteogenic effect of PVPA-co-AA polymer on bone cells and, more importantly, this effect was dependent on VPA:AA ratio and concentration. Under the optimized conditions, PVPA-co-AA polymer not only has an osteoconductive effect, enhancing SaOS-2 cell mineralization, but also has an osteoinductive effect to promote hBM-MSCs' osteogenic differentiation. Notably, the same PVPA-co-AA polymer at different concentrations could lead to differential osteogenic effects on both SaOS-2 and hBM-MSCs in vitro. This study furthers knowledge of the PVPA-co-AA polymer in osteogenic studies, which is critical when utilizing the PVPA-co-AA polymer for the design of novel bioactive polymeric tissue engineering scaffolds for future clinical applications. © 2017 The Authors Journal of Biomedical Materials Research Part A Published by Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 168-179, 2018.
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Affiliation(s)
- Qi Guang Wang
- National Engineering Research Center for BiomaterialsSichuan UniversityChengdu610064China
- Division of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology, Medicine and HealthThe University of ManchesterManchesterM13 9PLUnited Kingdom
| | - Ian Wimpenny
- School of MaterialsThe University of ManchesterManchesterM13 9PLUnited Kingdom
| | - Rebecca E. Dey
- School of ChemistryUniversity of ManchesterManchesterM13 9PLUnited Kingdom
| | - Xia Zhong
- School of ChemistryUniversity of ManchesterManchesterM13 9PLUnited Kingdom
| | - Peter J. Youle
- School of ChemistryUniversity of ManchesterManchesterM13 9PLUnited Kingdom
| | - Sandra Downes
- School of MaterialsThe University of ManchesterManchesterM13 9PLUnited Kingdom
| | - David C. Watts
- Division of Dentistry, School of Medical Sciences and Photon Science InstituteUniversity of ManchesterManchesterM13 9PLUnited Kingdom
| | - Peter M. Budd
- School of ChemistryUniversity of ManchesterManchesterM13 9PLUnited Kingdom
| | - Judith A. Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology, Medicine and HealthThe University of ManchesterManchesterM13 9PLUnited Kingdom
- NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester Foundation Trust, Manchester Academic Health Science CentreManchesterUnited Kingdom
| | - Julie E. Gough
- School of MaterialsThe University of ManchesterManchesterM13 9PLUnited Kingdom
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41
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Macdougall LJ, Pérez-Madrigal MM, Shaw JE, Inam M, Hoyland JA, O'Reilly R, Richardson SM, Dove AP. Self-healing, stretchable and robust interpenetrating network hydrogels. Biomater Sci 2018; 6:2932-2937. [DOI: 10.1039/c8bm00872h] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A self-healable, mechanically strong and stretchable hydrogel network that supports cell encapsulation is reported to be achieved by creation of an interpenetrating network approach between PEG and natural polymers.
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Affiliation(s)
| | | | - Joshua E. Shaw
- Division of Cell Matrix Biology and Regenerative Medicine
- School of Biological Sciences
- Faculty of Biology
- Medicine and Health
- Manchester Academic Health Science Centre
| | - Maria Inam
- Department of Chemistry
- University of Warwick
- Coventry
- UK
| | - Judith A. Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine
- School of Biological Sciences
- Faculty of Biology
- Medicine and Health
- Manchester Academic Health Science Centre
| | | | - Stephen M. Richardson
- Division of Cell Matrix Biology and Regenerative Medicine
- School of Biological Sciences
- Faculty of Biology
- Medicine and Health
- Manchester Academic Health Science Centre
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42
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Disney CM, Madi K, Bodey AJ, Lee PD, Hoyland JA, Sherratt MJ. Visualising the 3D microstructure of stained and native intervertebral discs using X-ray microtomography. Sci Rep 2017; 7:16279. [PMID: 29176563 PMCID: PMC5701246 DOI: 10.1038/s41598-017-16354-w] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2017] [Accepted: 11/10/2017] [Indexed: 01/31/2023] Open
Abstract
Intervertebral disc degeneration (IVDD) is linked to low back pain. Microstructural changes during degeneration have previously been imaged using 2D sectioning techniques and 3D methods which are limited to small specimens and prone to inducing artefacts from sample preparation. This study explores micro computed X-ray tomography (microCT) methods with the aim of resolving IVD 3D microstructure whilst minimising sample preparation artefacts. Low X-ray absorption contrast in non-mineralised tissue can be enhanced using staining and phase contrast techniques. A step-wise approach, including comparing three stains, was used to develop microCT for bovine tail IVD using laboratory and synchrotron sources. Staining successfully contrasted collagenous structures; however not all regions were stained and the procedure induced macroscopic structural changes. Phase contrast microCT of chemically fixed yet unstained samples resolved the nucleus pulposus, annulus fibrosus and constituent lamellae, and finer structures including collagen bundles and cross-bridges. Using the same imaging methods native tissue scans were of slightly lower contrast but free from sample processing artefacts. In the future these methods may be used to characterise structural remodelling in soft (non-calcified) tissues and to conduct in situ studies of native loaded tissues and constructs to characterise their 3D mechanical properties.
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Affiliation(s)
- C M Disney
- Centre for Doctoral Training in Regenerative Medicine, University of Manchester, Manchester, UK.,Division of Cell Matrix Biology and Regenerative Medicine, University of Manchester, Manchester, UK
| | - K Madi
- School of Materials, University of Manchester, Manchester, UK
| | - A J Bodey
- Diamond Light Source, Harwell Science and Innovation Campus, Oxfordshire, UK
| | - P D Lee
- School of Materials, University of Manchester, Manchester, UK
| | - J A Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, University of Manchester, Manchester, UK.,NIHR Manchester Biomedical Research Centre, Central Manchester University Hospitals NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, UK
| | - M J Sherratt
- Division of Cell Matrix Biology and Regenerative Medicine, University of Manchester, Manchester, UK.
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43
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Zhu M, Lu D, Wu S, Lian Q, Wang W, Milani AH, Cui Z, Nguyen NT, Chen M, Lyon LA, Adlam DJ, Freemont AJ, Hoyland JA, Saunders BR. Responsive Nanogel Probe for Ratiometric Fluorescent Sensing of pH and Strain in Hydrogels. ACS Macro Lett 2017; 6:1245-1250. [PMID: 35650778 DOI: 10.1021/acsmacrolett.7b00709] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this study a new pH-responsive nanogel probe containing a complementary nonradiative resonance energy transfer (NRET) fluorophore pair is investigated and its ability to act as a versatile probe of network-related changes in three hydrogels demonstrated. Fluorescent sensing using NRET is a powerful method for studying relationships between Angstrom length-scale structure and macroscopic properties of soft matter. Unfortunately, inclusion of NRET fluorophores into such materials requires material-specific chemistry. Here, low concentrations of preformed nanogel probes were included into hydrogel hosts. Ratiometric photoluminescence (PL) data for the gels labeled with the nanogel probes enabled pH-triggered swelling and deswelling to be studied as well as Ca2+-triggered collapse and solute release. PL measurements during compression of a nanogel probe-labeled nanocomposite gel demonstrated mechanochromic behavior and strain sensing. The new nanogel probes have excellent potential for investigating the internal structures of gels and provide a versatile ratiometric fluorescent platform for studying pH and strain.
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Affiliation(s)
- Mingning Zhu
- School
of Materials, University of Manchester, MSS Tower, Manchester M13 9PL, U.K
| | - Dongdong Lu
- School
of Materials, University of Manchester, MSS Tower, Manchester M13 9PL, U.K
| | - Shanglin Wu
- School
of Materials, University of Manchester, MSS Tower, Manchester M13 9PL, U.K
| | - Qing Lian
- School
of Materials, University of Manchester, MSS Tower, Manchester M13 9PL, U.K
| | - Wenkai Wang
- School
of Materials, University of Manchester, MSS Tower, Manchester M13 9PL, U.K
| | - Amir H. Milani
- School
of Materials, University of Manchester, MSS Tower, Manchester M13 9PL, U.K
| | - Zhengxing Cui
- School
of Materials, University of Manchester, MSS Tower, Manchester M13 9PL, U.K
| | - Nam T. Nguyen
- School
of Materials, University of Manchester, MSS Tower, Manchester M13 9PL, U.K
| | - Mu Chen
- School
of Materials, University of Manchester, MSS Tower, Manchester M13 9PL, U.K
| | - L. Andrew Lyon
- Schmid
College of Science and Technology, Chapman University, Orange, California 92866, United States
| | - Daman J. Adlam
- Division
of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology,
Medicine and Health, University of Manchester, Oxford Road, Manchester M13 9PT, U.K
| | - Anthony J. Freemont
- Division
of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology,
Medicine and Health, University of Manchester, Oxford Road, Manchester M13 9PT, U.K
- NIHR
Manchester Musculoskeletal Biomedical Research Unit, Central Manchester
Foundation Trust, Manchester Academic Health Science Centre, Manchester, U.K
| | - Judith A. Hoyland
- Division
of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology,
Medicine and Health, University of Manchester, Oxford Road, Manchester M13 9PT, U.K
- NIHR
Manchester Musculoskeletal Biomedical Research Unit, Central Manchester
Foundation Trust, Manchester Academic Health Science Centre, Manchester, U.K
| | - Brian R. Saunders
- School
of Materials, University of Manchester, MSS Tower, Manchester M13 9PL, U.K
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Smith CA, Board TN, Rooney P, Eagle MJ, Richardson SM, Hoyland JA. Correction: Human decellularized bone scaffolds from aged donors show improved osteoinductive capacity compared to young donor bone. PLoS One 2017; 12:e0187783. [PMID: 29095911 PMCID: PMC5667768 DOI: 10.1371/journal.pone.0187783] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
[This corrects the article DOI: 10.1371/journal.pone.0177416.].
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Wiet MG, Piscioneri A, Khan SN, Ballinger MN, Hoyland JA, Purmessur D. Mast Cell-Intervertebral disc cell interactions regulate inflammation, catabolism and angiogenesis in Discogenic Back Pain. Sci Rep 2017; 7:12492. [PMID: 28970490 PMCID: PMC5624870 DOI: 10.1038/s41598-017-12666-z] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2017] [Accepted: 09/19/2017] [Indexed: 01/07/2023] Open
Abstract
Low back pain (LBP) is a widespread debilitating disorder of significant socio-economic importance and intervertebral disc (IVD) degeneration has been implicated in its pathogenesis. Despite its high prevalence the underlying causes of LBP and IVD degeneration are not well understood. Recent work in musculoskeletal degenerative diseases such as osteoarthritis have revealed a critical role for immune cells, specifically mast cells in their pathophysiology, eluding to a potential role for these cells in the pathogenesis of IVD degeneration. This study sought to characterize the presence and role of mast cells within the IVD, specifically, mast cell-IVD cell interactions using immunohistochemistry and 3D in-vitro cell culture methods. Mast cells were upregulated in painful human IVD tissue and induced an inflammatory, catabolic and pro-angiogenic phenotype in bovine nucleus pulposus and cartilage endplate cells at the gene level. Healthy bovine annulus fibrosus cells, however, demonstrated a protective role against key inflammatory (IL-1β and TNFα) and pro-angiogenic (VEGFA) genes expressed by mast cells, and mitigated neo-angiogenesis formation in vitro. In conclusion, mast cells can infiltrate and elicit a degenerate phenotype in IVD cells, enhancing key disease processes that characterize the degenerate IVD, making them a potential therapeutic target for LBP.
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Affiliation(s)
- Matthew G Wiet
- Department of Biomedical Engineering, The Ohio State University, Columbus Ohio, 201 Davis Heart and Lung Research Institute, 473 W 12th Avenue, Columbus, Ohio, 43210, USA
| | - Andrew Piscioneri
- Department of Biomedical Engineering, The Ohio State University, Columbus Ohio, 201 Davis Heart and Lung Research Institute, 473 W 12th Avenue, Columbus, Ohio, 43210, USA
| | - Safdar N Khan
- Department of Orthopedics, The Ohio State University Wexner Medical Center, 1070 OSU CarePoint East, 543 Taylor Avenue, Columbus, Ohio, 43203, USA
| | - Megan N Ballinger
- Department of Internal Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, The Ohio State University, 201 Davis Heart and Lung Research Institute, 473 West 12th Avenue, Columbus, Ohio, 43210, USA
| | - Judith A Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, The University of Manchester, Stopford Building, Oxford Road, Manchester, M13 9PT, United Kingdom
- NIHR Manchester Musculoskeletal Biomedical Research Centre, Manchester Academic Health Science Centre, Central Manchester NHS Foundation Trust, Manchester, United Kingdom
| | - Devina Purmessur
- Department of Biomedical Engineering, The Ohio State University, Columbus Ohio, 201 Davis Heart and Lung Research Institute, 473 W 12th Avenue, Columbus, Ohio, 43210, USA.
- Department of Orthopedics, The Ohio State University Wexner Medical Center, 1070 OSU CarePoint East, 543 Taylor Avenue, Columbus, Ohio, 43203, USA.
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Coverdale BDM, Gough JE, Sampson WW, Hoyland JA. Use of lecithin to control fiber morphology in electrospun poly (ɛ-caprolactone) scaffolds for improved tissue engineering applications. J Biomed Mater Res A 2017; 105:2865-2874. [PMID: 28608414 PMCID: PMC5601215 DOI: 10.1002/jbm.a.36139] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Accepted: 06/01/2017] [Indexed: 12/02/2022]
Abstract
We elucidate the effects of incorporating surfactants into electrospun poly (ɛ‐caprolactone) (PCL) scaffolds on network homogeneity, cellular adherence and osteogenic differentiation. Lecithin was added with a range of concentrations to PCL solutions, which were electrospun to yield functionalized scaffolds. Addition of lecithin yielded a dose‐dependent reduction in scaffold hydrophobicity, whilst reducing fiber width and hence increasing specific surface area. These changes in scaffold morphology were associated with increased cellular attachment of Saos‐2 osteoblasts 3‐h postseeding. Furthermore, cells on scaffolds showed comparable proliferation over 14 days of incubation to TCP controls. Through model‐based interpretation of image analysis combined with gravimetric estimates of porosity, lecithin is shown to reduce scaffold porosity and mean pore size. Additionally, lecithin incorporation is found to reduce fiber curvature, resulting in increased scaffold specific elastic modulus. Low concentrations of lecithin were found to induce upregulation of several genes associated with osteogenesis in primary mesenchymal stem cells. The results demonstrate that functionalization of electrospun PCL scaffolds with lecithin can increase the biocompatibility and regenerative potential of these networks for bone tissue engineering applications. © 2017 The Authors Journal of Biomedical Materials Research Part A Published by Wiley Periodicals, Inc. J Biomed Mater Res Part A: 105A: 2865–2874, 2017.
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Affiliation(s)
| | - Julie E Gough
- School of Materials, The University of Manchester, Manchester, M13 9PL, United Kingdom
| | - William W Sampson
- School of Materials, The University of Manchester, Manchester, M13 9PL, United Kingdom
| | - Judith A Hoyland
- The Stopford Building, School of Biological Sciences, Division of Cell Matrix and Regenerative Medicine, The University of Manchester, Manchester, M13 9TP, United Kingdom.,NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester NHS Foundation Trust, Manchester Academic Health Science Centre, Manchester, United Kingdom
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Smith CA, Board TN, Rooney P, Eagle MJ, Richardson SM, Hoyland JA. Human decellularized bone scaffolds from aged donors show improved osteoinductive capacity compared to young donor bone. PLoS One 2017; 12:e0177416. [PMID: 28505164 PMCID: PMC5432108 DOI: 10.1371/journal.pone.0177416] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Accepted: 04/26/2017] [Indexed: 01/15/2023] Open
Abstract
To improve the safe use of allograft bone, decellularization techniques may be utilized to produce acellular scaffolds. Such scaffolds should retain their innate biological and biomechanical capacity and support mesenchymal stem cell (MSC) osteogenic differentiation. However, as allograft bone is derived from a wide age-range, this study aimed to determine whether donor age impacts on the ability an osteoinductive, acellular scaffold produced from human bone to promote the osteogenic differentiation of bone marrow MSCs (BM-MSC). BM-MSCs from young and old donors were seeded on acellular bone cubes from young and old donors undergoing osteoarthritis related hip surgery. All combinations resulted in increased osteogenic gene expression, and alkaline phosphatase (ALP) enzyme activity, however BM-MSCs cultured on old donor bone displayed the largest increases. BM-MSCs cultured in old donor bone conditioned media also displayed higher osteogenic gene expression and ALP activity than those exposed to young donor bone conditioned media. ELISA and Luminex analysis of conditioned media demonstrated similar levels of bioactive factors between age groups; however, IGF binding protein 1 (IGFBP1) concentration was significantly higher in young donor samples. Additionally, structural analysis of old donor bone indicated an increased porosity compared to young donor bone. These results demonstrate the ability of a decellularized scaffold produced from young and old donors to support osteogenic differentiation of cells from young and old donors. Significantly, the older donor bone produced greater osteogenic differentiation which may be related to reduced IGFBP1 bioavailability and increased porosity, potentially explaining the excellent clinical results seen with the use of allograft from aged donors.
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Affiliation(s)
- Christopher A. Smith
- Divsion of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
| | | | - Paul Rooney
- National Health Service (NHS) Blood and Tissue Transplant Services, Speke, Liverpool, United Kingdom
| | - Mark J. Eagle
- National Health Service (NHS) Blood and Tissue Transplant Services, Speke, Liverpool, United Kingdom
| | - Stephen M. Richardson
- Divsion of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
| | - Judith A. Hoyland
- Divsion of Cell Matrix Biology and Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, United Kingdom
- NIHR Manchester Musculoskeletal Biomedical Research Unit, Central Manchester Foundation Trust, Manchester Academic Health Science Centre, Manchester, United Kingdom
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Dudek M, Yang N, Ruckshanthi JPD, Williams J, Borysiewicz E, Wang P, Adamson A, Li J, Bateman JF, White MR, Boot-Handford RP, Hoyland JA, Meng QJ. The intervertebral disc contains intrinsic circadian clocks that are regulated by age and cytokines and linked to degeneration. Ann Rheum Dis 2017; 76:576-584. [PMID: 27489225 PMCID: PMC5446006 DOI: 10.1136/annrheumdis-2016-209428] [Citation(s) in RCA: 109] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Revised: 06/06/2016] [Accepted: 07/09/2016] [Indexed: 12/11/2022]
Abstract
OBJECTIVES The circadian clocks are internal timing mechanisms that drive ∼24-hour rhythms in a tissue-specific manner. Many aspects of the physiology of the intervertebral disc (IVD) show clear diurnal rhythms. However, it is unknown whether IVD tissue contains functional circadian clocks and if so, how their dysregulation is implicated in IVD degeneration. METHODS Clock gene dynamics in ex vivo IVD explants (from PER2:: luciferase (LUC) reporter mice) and human disc cells (transduced with lentivirus containing Per2::luc reporters) were monitored in real time by bioluminescence photon counting and imaging. Temporal gene expression changes were studied by RNAseq and quantitative reverse transcription (qRT)-PCR. IVD pathology was evaluated by histology in a mouse model with tissue-specific deletion of the core clock gene Bmal1. RESULTS Here we show the existence of the circadian rhythm in mouse IVD tissue and human disc cells. This rhythm is dampened with ageing in mice and can be abolished by treatment with interleukin-1β but not tumour necrosis factor α. Time-series RNAseq revealed 607 genes with 24-hour patterns of expression representing several essential pathways in IVD physiology. Mice with conditional knockout of Bmal1 in their disc cells demonstrated age-related degeneration of IVDs. CONCLUSIONS We have established autonomous circadian clocks in mouse and human IVD cells which respond to age and cytokines, and control key pathways involved in the homeostasis of IVDs. Genetic disruption to the mouse IVD molecular clock predisposes to IVD degeneration. These results support the concept that disruptions to circadian rhythms may be a risk factor for degenerative IVD disease and low back pain.
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Affiliation(s)
- Michal Dudek
- Faculty of Life Sciences, University of Manchester, Manchester, UK
- Wellcome Trust Centre for Cell Matrix Research, University of Manchester, Manchester, UK
| | - Nan Yang
- Faculty of Life Sciences, University of Manchester, Manchester, UK
- Wellcome Trust Centre for Cell Matrix Research, University of Manchester, Manchester, UK
| | - Jayalath PD Ruckshanthi
- Faculty of Life Sciences, University of Manchester, Manchester, UK
- Wellcome Trust Centre for Cell Matrix Research, University of Manchester, Manchester, UK
| | - Jack Williams
- Faculty of Life Sciences, University of Manchester, Manchester, UK
- Wellcome Trust Centre for Cell Matrix Research, University of Manchester, Manchester, UK
| | | | - Ping Wang
- Faculty of Life Sciences, University of Manchester, Manchester, UK
| | - Antony Adamson
- Faculty of Life Sciences, University of Manchester, Manchester, UK
| | - Jian Li
- Faculty of Life Sciences, University of Manchester, Manchester, UK
| | - John F Bateman
- Murdoch Children's Research Institute, Parkville, Victoria, Australia
| | - Michael R White
- Faculty of Life Sciences, University of Manchester, Manchester, UK
| | | | - Judith A Hoyland
- Faculty of Medical and Human Sciences, Centre for Tissue Injury and Repair, University of Manchester, Manchester, UK
- NIHR Manchester Musculoskeletal Biomedical Research Unit, Manchester Academic Health Science Centre, Manchester, UK
| | - Qing-Jun Meng
- Faculty of Life Sciences, University of Manchester, Manchester, UK
- Wellcome Trust Centre for Cell Matrix Research, University of Manchester, Manchester, UK
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Milani AH, Saunders JM, Nguyen NT, Ratcliffe LPD, Adlam DJ, Freemont AJ, Hoyland JA, Armes SP, Saunders BR. Synthesis of polyacid nanogels: pH-responsive sub-100 nm particles for functionalisation and fluorescent hydrogel assembly. Soft Matter 2017; 13:1554-1560. [PMID: 28120992 DOI: 10.1039/c6sm02713j] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Nanogels are crosslinked polymer particles with a swollen size between 1 and 100 nm. They are of major interest for advanced surface coatings, drug delivery, diagnostics and biomaterials. Synthesising polyacid nanogels that show triggered swelling using a scalable approach is a key objective of polymer colloid chemistry. Inspired by the ability of polar surfaces to enhance nanoparticle stabilisation, we report the first examples of pH-responsive polyacid nanogels containing high -COOH contents prepared by a simple, scalable, aqueous method. To demonstrate their functionalisation potential, glycidyl methacrylate was reacted with the -COOH chemical handles and the nanogels were converted to macro-crosslinkers. The concentrated (functionalised) nanogel dispersions retained their pH-responsiveness, were shear-thinning and formed physical gels at pH 7.4. The nanogels were covalently interlinked via free-radical coupling at 37 °C to form transparent, ductile, hydrogels. Mixing of the functionalised nanogels with polymer dots enabled covalent assembly of fluorescent hydrogels.
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Affiliation(s)
- Amir H Milani
- School of Materials, University of Manchester, Manchester, M13 9PL, UK.
| | | | - Nam T Nguyen
- School of Materials, University of Manchester, Manchester, M13 9PL, UK.
| | - Liam P D Ratcliffe
- Department of Chemistry, The University of Sheffield, Dainton Building, Brook Hill, Sheffield, South Yorkshire S3 7HF, UK
| | - Daman J Adlam
- Division of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Anthony J Freemont
- Division of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, M13 9PL, UK
| | - Judith A Hoyland
- Division of Cell Matrix Biology and Regenerative Medicine, Faculty of Biology, Medicine and Health, University of Manchester, Oxford Road, Manchester, M13 9PL, UK and NIHR Manchester Musculoskeletal Biomedical Research Unit, Manchester Academic Health Science Centre, Manchester, UK
| | - Steven P Armes
- Department of Chemistry, The University of Sheffield, Dainton Building, Brook Hill, Sheffield, South Yorkshire S3 7HF, UK
| | - Brian R Saunders
- School of Materials, University of Manchester, Manchester, M13 9PL, UK.
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50
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Rodrigues‐Pinto R, Berry A, Piper‐Hanley K, Hanley N, Richardson SM, Hoyland JA. Spatiotemporal analysis of putative notochordal cell markers reveals CD24 and keratins 8, 18, and 19 as notochord-specific markers during early human intervertebral disc development. J Orthop Res 2016; 34:1327-40. [PMID: 26910849 PMCID: PMC5021113 DOI: 10.1002/jor.23205] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2015] [Accepted: 02/17/2016] [Indexed: 02/04/2023]
Abstract
In humans, the nucleus pulposus (NP) is composed of large vacuolated notochordal cells in the fetus but, soon after birth, becomes populated by smaller, chondrocyte-like cells. Although animal studies indicate that notochord-derived cells persist in the adult NP, the ontogeny of the adult human NP cell population is still unclear. As such, identification of unique notochordal markers is required. This study was conducted to determine the spatiotemporal expression of putative human notochordal markers to aid in the elucidation of the ontogeny of adult human NP cells. Human embryos and fetuses (3.5-18 weeks post-conception (WPC)) were microdissected to isolate the spine anlagens (notochord and somites/sclerotome). Morphology of the developing IVD was assessed using hematoxylin and eosin. Expression of keratin (KRT) 8, KRT18, KRT19, CD24, GAL3, CD55, BASP1, CTGF, T, CD90, Tie2, and E-cadherin was assessed using immunohistochemistry. KRT8, KRT18, KRT19 were uniquely expressed by notochordal cells at all spine levels at all stages studied; CD24 was expressed at all stages except 3.5 WPC. While GAL3, CD55, BASP1, CTGF, and T were expressed by notochordal cells at specific stages, they were also co-expressed by sclerotomal cells. CD90, Tie2, and E-cadherin expression was not detectable in developing human spine cells at any stage. This study has identified, for the first time, the consistent expression of KRT8, KRT18, KRT19, and CD24 as human notochord-specific markers during early IVD development. Thus, we propose that these markers can be used to help ascertain the ontogeny of adult human NP cells. © 2016 The Authors. Journal of Orthopaedic Research Published by Wiley Periodicals, Inc. J Orthop Res 34:1327-1340, 2016.
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Affiliation(s)
- Ricardo Rodrigues‐Pinto
- Centre For Tissue Injury and Repair, Institute of Inflammation and Repair, Faculty of Medical and Human SciencesUniversity of ManchesterStopford Building, Oxford RoadManchesterM13 9PTUnited Kingdom
- Department of OrthopaedicsCentro Hospitalar do Porto—Hospital de Santo AntónioLargo Prof. Abel SalazarPorto4099‐001Portugal
| | - Andrew Berry
- Centre for Endocrinology and Diabetes, Institute of Human Development, Faculty of Medical and Human SciencesUniversity of ManchesterAV Hill Building—3rd Floor, Oxford RoadManchesterM13 9PTUnited Kingdom
| | - Karen Piper‐Hanley
- Centre for Endocrinology and Diabetes, Institute of Human Development, Faculty of Medical and Human SciencesUniversity of ManchesterAV Hill Building—3rd Floor, Oxford RoadManchesterM13 9PTUnited Kingdom
| | - Neil Hanley
- Centre for Endocrinology and Diabetes, Institute of Human Development, Faculty of Medical and Human SciencesUniversity of ManchesterAV Hill Building—3rd Floor, Oxford RoadManchesterM13 9PTUnited Kingdom
| | - Stephen M. Richardson
- Centre For Tissue Injury and Repair, Institute of Inflammation and Repair, Faculty of Medical and Human SciencesUniversity of ManchesterStopford Building, Oxford RoadManchesterM13 9PTUnited Kingdom
| | - Judith A. Hoyland
- Centre For Tissue Injury and Repair, Institute of Inflammation and Repair, Faculty of Medical and Human SciencesUniversity of ManchesterStopford Building, Oxford RoadManchesterM13 9PTUnited Kingdom
- NIHR Manchester Musculoskeletal Biomedical Research UnitManchester Academic Health Science CentreManchesterUnited Kingdom
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