1
|
Bu W, Wu Y, Ghaemmaghami AM, Sun H, Mata A. Rational design of hydrogels for immunomodulation. Regen Biomater 2022; 9:rbac009. [PMID: 35668923 PMCID: PMC9160883 DOI: 10.1093/rb/rbac009] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 01/21/2022] [Accepted: 01/30/2022] [Indexed: 11/13/2022] Open
Abstract
Abstract
The immune system protects organisms against endogenous and exogenous harm and plays a key role in tissue development, repair, and regeneration. Traditional immunomodulatory biologics exhibit limitations including degradation by enzymes, short half-life, and lack of targeting ability. Encapsulating or binding these biologics within biomaterials is an effective way to address these problems. Hydrogels are promising immunomodulatory materials because of their prominent biocompatibility, tuneability, and versatility. However, to take advantage of these opportunities and optimize material performance, it is important to more specifically elucidate, and leverage on, how hydrogels affect and control the immune response. Here, we summarize how key physical and chemical properties of hydrogels affect the immune response. We first provide an overview of underlying steps of the host immune response upon exposure to biomaterials. Then, we discuss recent advances in immunomodulatory strategies where hydrogels play a key role through a) physical properties including dimensionality, stiffness, porosity, and topography; b) chemical properties including wettability, electric property, and molecular presentation; and c) the delivery of bioactive molecules via chemical or physical cues. Thus, this review aims to build a conceptual and practical toolkit for the design of immune-instructive hydrogels capable of modulating the host immune response.
Collapse
Affiliation(s)
- Wenhuan Bu
- Liaoning Provincial Key Laboratory of Oral Diseases, School of Stomatology, China Medical University, Shenyang, 110001, China
- Department of Dental Materials, School of Stomatology, China Medical University, Shenyang, 110001, China
- Department of Center Laboratory, School of Stomatology, China Medical University, Shenyang, 110001, China
- School of Pharmacy, University of Nottingham, Nottingham, NG7 2RD, UK
- Biodiscovery Institute, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Yuanhao Wu
- School of Pharmacy, University of Nottingham, Nottingham, NG7 2RD, UK
- Biodiscovery Institute, University of Nottingham, Nottingham, NG7 2RD, UK
| | - Amir M Ghaemmaghami
- Division of Immunology, School of Life Sciences, University of Nottingham, Nottingham, NG7 2RD, UK
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90024, USA
| | - Hongchen Sun
- Liaoning Provincial Key Laboratory of Oral Diseases, School of Stomatology, China Medical University, Shenyang, 110001, China
| | - Alvaro Mata
- School of Pharmacy, University of Nottingham, Nottingham, NG7 2RD, UK
- Biodiscovery Institute, University of Nottingham, Nottingham, NG7 2RD, UK
- Department of Chemical and Environmental Engineering, University of Nottingham, Nottingham, NG7 2RD, UK
| |
Collapse
|
2
|
Al-Hejailan RS, Bakheet RH, Al-Saud MM, Al-Jufan MB, Al-Hindas HM, Al-Qattan SM, Al-Muhanna MK, Parhar RS, Conca W, Hansmann J, Collison KS, Walles H, Al-Mohanna FA. Toward allogenizing a xenograft: Xenogeneic cardiac scaffolds recellularized with human-induced pluripotent stem cells do not activate human naïve neutrophils. J Biomed Mater Res B Appl Biomater 2021; 110:691-701. [PMID: 34619017 DOI: 10.1002/jbm.b.34948] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 08/31/2021] [Accepted: 09/22/2021] [Indexed: 11/12/2022]
Abstract
The limited availability of human donor organs suitable for transplantation has resulted in ever-increasing patient waiting lists globally. Xenotransplantation is considered a potential option, but is yet to reach clinical practice. Although remarkable progress has been made in overcoming immunological rejection, issues with functionality are still to be resolved. Bioengineering approaches have been used to create cardiac tissues with optimized functions. The use of decellularized xenogeneic cardiac tissues seeded with donor-derived cardiac cells may prove to be a viable strategy as supporting structures of the native tissue such as vasculature can be utilized. Here we used sequential perfusion to decellularize adult rat hearts. The acellular scaffolds were reseeded with human endothelial cells, human fibroblasts, human mesenchymal stem cells, and cardiac cells derived from human-induced pluripotent stem cells. The ability of the resultant recellularized rat scaffolds to activate human naïve neutrophils in vitro was investigated to measure xenogeneic recognition. Our results demonstrate that in contrast to cadaveric xenogeneic hearts, acellular and recellularized xenogeneic scaffolds did not activate human naïve neutrophils and suggest that decellularization removes the xenogeneic antigens that lead to human naïve neutrophil activation thus allowing human cells to populate the now "allogenized" xenogeneic scaffolds.
Collapse
Affiliation(s)
- Reem S Al-Hejailan
- Department of Cell Biology, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia.,Department of Heart Centre, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Razan H Bakheet
- Department of Cell Biology, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Mashael M Al-Saud
- Department of Cell Biology, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | | | - Hussain M Al-Hindas
- Department of Cell Biology, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Somaya M Al-Qattan
- Department of Cell Biology, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Muhanna K Al-Muhanna
- Tissue Engineering and Regenerative Medicine (TERM), Würzburg University, Würzburg, Germany
| | - Ranjit S Parhar
- Department of Cell Biology, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Walter Conca
- Department of Cell Biology, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Jan Hansmann
- Department of Heart Centre, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Kate S Collison
- Department of Cell Biology, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Heike Walles
- Department of Heart Centre, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| | - Futwan A Al-Mohanna
- Department of Cell Biology, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia
| |
Collapse
|
3
|
Aoyama S, Nakagawa R, Mulé JJ, Mailloux AW. Inducible Tertiary Lymphoid Structures: Promise and Challenges for Translating a New Class of Immunotherapy. Front Immunol 2021; 12:675538. [PMID: 34054863 PMCID: PMC8160316 DOI: 10.3389/fimmu.2021.675538] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 04/27/2021] [Indexed: 12/12/2022] Open
Abstract
Tertiary lymphoid structures (TLS) are ectopically formed aggregates of organized lymphocytes and antigen-presenting cells that occur in solid tissues as part of a chronic inflammation response. Sharing structural and functional characteristics with conventional secondary lymphoid organs (SLO) including discrete T cell zones, B cell zones, marginal zones with antigen presenting cells, reticular stromal networks, and high endothelial venues (HEV), TLS are prominent centers of antigen presentation and adaptive immune activation within the periphery. TLS share many signaling axes and leukocyte recruitment schemes with SLO regarding their formation and function. In cancer, their presence confers positive prognostic value across a wide spectrum of indications, spurring interest in their artificial induction as either a new form of immunotherapy, or as a means to augment other cell or immunotherapies. Here, we review approaches for inducible (iTLS) that utilize chemokines, inflammatory factors, or cellular analogues vital to TLS formation and that often mirror conventional SLO organogenesis. This review also addresses biomaterials that have been or might be suitable for iTLS, and discusses remaining challenges facing iTLS manufacturing approaches for clinical translation.
Collapse
Affiliation(s)
- Shota Aoyama
- Department of Surgery, Institute of Gastroenterology, Tokyo Women’s Medical University, Tokyo, Japan
| | - Ryosuke Nakagawa
- Department of Surgery, Institute of Gastroenterology, Tokyo Women’s Medical University, Tokyo, Japan
| | - James J. Mulé
- Immunology Program, Moffitt Cancer Center, Tampa, FL, United States
- Cutaneous Oncology Program, Moffitt Cancer Center, Tampa, FL, United States
| | - Adam W. Mailloux
- Department of Microbiology and Immunology, University of Iowa, Iowa City, IA, United States
| |
Collapse
|
4
|
Negrescu AM, Cimpean A. The State of the Art and Prospects for Osteoimmunomodulatory Biomaterials. MATERIALS (BASEL, SWITZERLAND) 2021; 14:1357. [PMID: 33799681 PMCID: PMC7999637 DOI: 10.3390/ma14061357] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 03/04/2021] [Accepted: 03/08/2021] [Indexed: 12/14/2022]
Abstract
The critical role of the immune system in host defense against foreign bodies and pathogens has been long recognized. With the introduction of a new field of research called osteoimmunology, the crosstalk between the immune and bone-forming cells has been studied more thoroughly, leading to the conclusion that the two systems are intimately connected through various cytokines, signaling molecules, transcription factors and receptors. The host immune reaction triggered by biomaterial implantation determines the in vivo fate of the implant, either in new bone formation or in fibrous tissue encapsulation. The traditional biomaterial design consisted in fabricating inert biomaterials capable of stimulating osteogenesis; however, inconsistencies between the in vitro and in vivo results were reported. This led to a shift in the development of biomaterials towards implants with osteoimmunomodulatory properties. By endowing the orthopedic biomaterials with favorable osteoimmunomodulatory properties, a desired immune response can be triggered in order to obtain a proper bone regeneration process. In this context, various approaches, such as the modification of chemical/structural characteristics or the incorporation of bioactive molecules, have been employed in order to modulate the crosstalk with the immune cells. The current review provides an overview of recent developments in such applied strategies.
Collapse
Affiliation(s)
| | - Anisoara Cimpean
- Department of Biochemistry and Molecular Biology, Faculty of Biology, University of Bucharest, 91-95 Splaiul Independentei, 050095 Bucharest, Romania;
| |
Collapse
|
5
|
El Kholy K, Buser D, Wittneben JG, Bosshardt DD, Van Dyke TE, Kowolik MJ. Investigating the Response of Human Neutrophils to Hydrophilic and Hydrophobic Micro-Rough Titanium Surfaces. MATERIALS 2020; 13:ma13153421. [PMID: 32756413 PMCID: PMC7435731 DOI: 10.3390/ma13153421] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 07/29/2020] [Accepted: 07/30/2020] [Indexed: 01/19/2023]
Abstract
Various treatments have been used to change both the topography and chemistry of titanium surfaces, aiming to enhance tissue response and reduce healing times of endosseous implants. Most studies to date focused on bone healing around dental implants occurring later during the healing cascade. However, the impact of the initial inflammatory response in the surgical wound site on the success and healing time of dental implants is crucial for implant integration and success, yet it is still poorly understood. The purpose of this study was to investigate the effect of titanium surface hydrophilicity on the response of human neutrophils by monitoring oxygen radical production, which was measured as chemiluminescence activity. Materials and Methods: Neutrophils were isolated from human donors’ blood buffy coats using the double sucrose gradient method. Neutrophils were exposed to both hydrophilic and hydrophobic titanium surfaces with identical topographies in the presence and absence of human serum. This resulted in six experimental groups including two different implant surfaces, with and without exposure to human serum, and two control groups including an active control with cells alone and a passive control with no cells. Two samples from each group were fixed and analyzed by SEM. Comparisons between surface treatments for differences in chemiluminescence values were performed using analysis of variance ANOVA. Results and Conclusion: In the absence of exposure to serum, there was no significant difference noted between the reaction of neutrophils to hydrophilic and hydrophobic surfaces. However, there was a significant reduction in the mean and active chemiluminescence activity of neutrophils to serum-coated hydrophilic titanium surfaces than to serum-coated hydrophobic titanium surfaces. This suggests that surface hydrophilicity promotes enhanced adsorption of serum proteins, which leads to decreased provocation of initial immune cells and reduction of local oxygen radical production during wound healing. This can help explain the faster osseointegration demonstrated by hydrophilic titanium implants.
Collapse
Affiliation(s)
- Karim El Kholy
- Department of Oral Medicine, Infection and Immunity, Harvard University School of Dental Medicine, Boston, MA 02115, USA
- Center of Clinical and Translational Research, The Forsyth Institute, Cambridge, MA 02142, USA
| | - Daniel Buser
- Department of Oral Surgery and Stomatology, University of Bern School of Dental Medicine, 3010 Bern, Switzerland
| | - Julia-Gabriella Wittneben
- Department of Reconstructive Dentistry and Gerodontology, University of Bern School of Dental Medicine, 3010 Bern, Switzerland
| | - Dieter D Bosshardt
- Department of Oral Surgery and Stomatology, University of Bern School of Dental Medicine, 3010 Bern, Switzerland
| | - Thomas E Van Dyke
- Department of Oral Medicine, Infection and Immunity, Harvard University School of Dental Medicine, Boston, MA 02115, USA
- Center of Clinical and Translational Research, The Forsyth Institute, Cambridge, MA 02142, USA
| | - Michael J Kowolik
- Department of Periodontics, Indiana University School of Dentistry, Indianapolis, IN 46202, USA
| |
Collapse
|
6
|
Bachhuka A, Madathiparambil Visalakshan R, Law CS, Santos A, Ebendorff-Heidepriem H, Karnati S, Vasilev K. Modulation of Macrophages Differentiation by Nanoscale-Engineered Geometric and Chemical Features. ACS APPLIED BIO MATERIALS 2020; 3:1496-1505. [DOI: 10.1021/acsabm.9b01125] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- A. Bachhuka
- ARC Center of Excellence for Nanoscale BioPhotonics (CNBP), The University of Adelaide, Adelaide, South Australia 5005, Australia
- Institute for Photonics and Advanced Sensing (IPAS), The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - R. Madathiparambil Visalakshan
- Future Industries Institute, University of South Australia, Mawson Lakes Campus, Adelaide, South Australia 5095, Australia
| | - C. S. Law
- ARC Center of Excellence for Nanoscale BioPhotonics (CNBP), The University of Adelaide, Adelaide, South Australia 5005, Australia
- Institute for Photonics and Advanced Sensing (IPAS), The University of Adelaide, Adelaide, South Australia 5005, Australia
- School of Chemical Engineering, University of Adelaide, Engineering North Building, Adelaide, South Australia 5005, Australia
| | - A. Santos
- ARC Center of Excellence for Nanoscale BioPhotonics (CNBP), The University of Adelaide, Adelaide, South Australia 5005, Australia
- Institute for Photonics and Advanced Sensing (IPAS), The University of Adelaide, Adelaide, South Australia 5005, Australia
- School of Chemical Engineering, University of Adelaide, Engineering North Building, Adelaide, South Australia 5005, Australia
| | - H. Ebendorff-Heidepriem
- ARC Center of Excellence for Nanoscale BioPhotonics (CNBP), The University of Adelaide, Adelaide, South Australia 5005, Australia
- Institute for Photonics and Advanced Sensing (IPAS), The University of Adelaide, Adelaide, South Australia 5005, Australia
| | - S. Karnati
- Institute for Anatomy and Cell Biology, Julius Maximilians University, Koellikerstrasse 6, Wuerzburg 97070, Germany
| | - K. Vasilev
- Future Industries Institute, University of South Australia, Mawson Lakes Campus, Adelaide, South Australia 5095, Australia
- School of Engineering, University of South Australia, Mawson Lakes Campus, Adelaide, South Australia 5095, Australia
| |
Collapse
|
7
|
Frazão LP, Vieira de Castro J, Neves NM. In Vivo Evaluation of the Biocompatibility of Biomaterial Device. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1250:109-124. [PMID: 32601941 DOI: 10.1007/978-981-15-3262-7_8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Biomaterials are widely used to produce devices for regenerative medicine. After its implantation, an interaction between the host immune system and the implanted biomaterial occurs, leading to biomaterial-specific cellular and tissue responses. These responses may include inflammatory, wound healing responses, immunological and foreign-body reactions, and even fibrous encapsulation of the implanted biomaterial device. In fact, the cellular and molecular events that regulate the success of the implant and tissue regeneration are played at the interface between the foreign body and the host inflammation, determined by innate and adaptive immune responses. This chapter focuses on host responses that must be taken into consideration in determining the biocompatibility of biomaterial devices when implanted in vivo of animal models.
Collapse
Affiliation(s)
- L P Frazão
- I3B's - Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho: 3Bs Research Group, Guimarães, Portugal
- ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - J Vieira de Castro
- I3B's - Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho: 3Bs Research Group, Guimarães, Portugal
- ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal
| | - Nuno M Neves
- I3B's - Research Institute on Biomaterials, Biodegradables and Biomimetics of University of Minho: 3Bs Research Group, Guimarães, Portugal.
- ICVS/3B's - PT Government Associate Laboratory, Braga/Guimarães, Portugal.
| |
Collapse
|
8
|
Biomaterials: Foreign Bodies or Tuners for the Immune Response? Int J Mol Sci 2019; 20:ijms20030636. [PMID: 30717232 PMCID: PMC6386828 DOI: 10.3390/ijms20030636] [Citation(s) in RCA: 321] [Impact Index Per Article: 64.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 01/22/2019] [Accepted: 01/28/2019] [Indexed: 12/11/2022] Open
Abstract
The perspectives of regenerative medicine are still severely hampered by the host response to biomaterial implantation, despite the robustness of technologies that hold the promise to recover the functionality of damaged organs and tissues. In this scenario, the cellular and molecular events that decide on implant success and tissue regeneration are played at the interface between the foreign body and the host inflammation, determined by innate and adaptive immune responses. To avoid adverse events, rather than the use of inert scaffolds, current state of the art points to the use of immunomodulatory biomaterials and their knowledge-based use to reduce neutrophil activation, and optimize M1 to M2 macrophage polarization, Th1 to Th2 lymphocyte switch, and Treg induction. Despite the fact that the field is still evolving and much remains to be accomplished, recent research breakthroughs have provided a broader insight on the correct choice of biomaterial physicochemical modifications to tune the reaction of the host immune system to implanted biomaterial and to favor integration and healing.
Collapse
|
9
|
Bachhuka A, Hayball JD, Smith LE, Vasilev K. The Interplay between Surface Nanotopography and Chemistry Modulates Collagen I and III Deposition by Human Dermal Fibroblasts. ACS APPLIED MATERIALS & INTERFACES 2017; 9:5874-5884. [PMID: 28156094 DOI: 10.1021/acsami.6b15932] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
The events within the foreign body response are similar to, but ultimately different than, the wound healing cascade. Collagen production by fibroblasts is known to play a vital role in wound healing and device fibrous encapsulation. However, the influence of surface nanotopography on collagen deposition by these cells has not been reported so far. To address this gap, we have developed model substrata having surface nanotopography of controlled height of 16, 38, and 68 nm and tailored outermost surface chemistry of amines, carboxyl acid, and pure hydrocarbon. Fibroblast adhesion was reduced on nanotopographically modified surfaces compared to the smooth control. Furthermore, amine and acid functionalized surfaces showed increased cell proliferation over hydrophobic hydrocarbon surfaces. Collagen III production increased from day 3 to day 8 and then decreased from day 8 to day 16 on all surfaces, while collagen I deposition increased throughout the duration of 16 days. Our data show that the initial collagen I and III deposition can be modulated by selecting desired combinations of surface nanotopography and chemistry. This study provides useful knowledge that could help in tuning fibrous capsule formation and in turn govern the fate of implantable biomaterial devices.
Collapse
Affiliation(s)
- Akash Bachhuka
- ARC Centre of Excellence for Nanoscale Biophotonics, Institute for Photonics and Advanced Sensing, School of Physical Sciences, The University of Adelaide , Adelaide, SA 5005, Australia
| | - John Dominic Hayball
- Experimental Therapeutics Laboratory, Sansom Institute and Hanson Institute, School of Pharmacy and Medical Science, University of South Australia , Adelaide, SA 5000, Australia
| | | | | |
Collapse
|
10
|
Kafrouni L, Savadogo O. Recent progress on magnetic nanoparticles for magnetic hyperthermia. Prog Biomater 2016; 5:147-160. [PMID: 27995583 PMCID: PMC5304434 DOI: 10.1007/s40204-016-0054-6] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2016] [Accepted: 08/19/2016] [Indexed: 01/06/2023] Open
Abstract
Recent advances in nanomaterials science contributed to develop new micro- and nano-devices as potential diagnostic and therapeutic tools in the field of oncology. The synthesis of superparamagnetic nanoparticles (SPMNPs) has been intensively studied, and the use of these particles in magnetic hyperthermia therapy has demonstrated successes in treatment of cancer. However, some physical limitations have been found to impact the heating efficiency required to kill cancer cells. Moreover, the bio-safety of NPs remains largely unexplored. The primary goals of this review are to summarize the recent progress in the development of magnetic nanoparticles (MNPs) for hyperthermia, and discuss the limitations and advances in the synthesis of these particles. Based on this knowledge, new perspectives on development of new biocompatible and biofunctional nanomaterials for magnetic hyperthermia are discussed.
Collapse
Affiliation(s)
- Lina Kafrouni
- Department of Chemical Engineering, Polytechnique Montréal, C.P. 6079, Succursale Centre-ville, Montreal, QC, H3C 3A7, Canada
- Laboratory of New Materials for Energy and Electrochemistry Systems (LaNoMat), Montreal, Canada
| | - Oumarou Savadogo
- Department of Chemical Engineering, Polytechnique Montréal, C.P. 6079, Succursale Centre-ville, Montreal, QC, H3C 3A7, Canada.
- Laboratory of New Materials for Energy and Electrochemistry Systems (LaNoMat), Montreal, Canada.
| |
Collapse
|
11
|
Lorenzetti M, Bernardini G, Luxbacher T, Santucci A, Kobe S, Novak S. Surface properties of nanocrystalline TiO2 coatings in relation to the in vitro plasma protein adsorption. ACTA ACUST UNITED AC 2015. [PMID: 26225819 DOI: 10.1088/1748-6041/10/4/045012] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
This study reports on the selective adsorption of whole plasma proteins on hydrothermally (HT) grown TiO2-anatase coatings and its dependence on the three main surface properties: surface charge, wettability and roughness. The influence of the photo-activation of TiO2 by UV irradiation was also evaluated. Even though the protein adhesion onto Ti-based substrates was only moderate, better adsorption of any protein (at pH = 7.4) occurred for the most negatively charged and hydrophobic substrate (Ti non-treated) and for the most nanorough and hydrophilic surface (HT Ti3), indicating that the mutual action of the surface characteristics is responsible for the attraction and adhesion of the proteins. The HT coatings showed a higher adsorption of certain proteins (albumin 'passivation' layer, apolipoproteins, vitamin D-binding protein, ceruloplasmin, α-2-HS-glycoprotein) and higher ratios of albumin to fibrinogen and albumin to immunoglobulin γ-chains. The UV pre-irradiation affected the surface properties and strongly reduced the adsorption of the proteins. These results provide in-depth knowledge about the characterization of nanocrystalline TiO2 coatings for body implants and provide a basis for future studies on the hemocompatibility and biocompatibility of such surfaces.
Collapse
Affiliation(s)
- M Lorenzetti
- Department for Nanostructured Materials, Jožef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia. Jožef Stefan International Postgraduate School, Jamova cesta 39, Ljubljana 1000, Slovenia
| | | | | | | | | | | |
Collapse
|
12
|
Innate Immunity and Biomaterials at the Nexus: Friends or Foes. BIOMED RESEARCH INTERNATIONAL 2015; 2015:342304. [PMID: 26247017 PMCID: PMC4515263 DOI: 10.1155/2015/342304] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Revised: 06/15/2015] [Accepted: 06/22/2015] [Indexed: 01/04/2023]
Abstract
Biomaterial implants are an established part of medical practice, encompassing a broad range of devices that widely differ in function and structural composition. However, one common property amongst biomaterials is the induction of the foreign body response: an acute sterile inflammatory reaction which overlaps with tissue vascularisation and remodelling and ultimately fibrotic encapsulation of the biomaterial to prevent further interaction with host tissue. Severity and clinical manifestation of the biomaterial-induced foreign body response are different for each biomaterial, with cases of incompatibility often associated with loss of function. However, unravelling the mechanisms that progress to the formation of the fibrotic capsule highlights the tightly intertwined nature of immunological responses to a seemingly noncanonical “antigen.” In this review, we detail the pathways associated with the foreign body response and describe possible mechanisms of immune involvement that can be targeted. We also discuss methods of modulating the immune response by altering the physiochemical surface properties of the biomaterial prior to implantation. Developments in these areas are reliant on reproducible and effective animal models and may allow a “combined” immunomodulatory approach of adapting surface properties of biomaterials, as well as treating key immune pathways to ultimately reduce the negative consequences of biomaterial implantation.
Collapse
|
13
|
Vitkov L, Krautgartner WD, Obermayer A, Stoiber W, Hannig M, Klappacher M, Hartl D. The initial inflammatory response to bioactive implants is characterized by NETosis. PLoS One 2015; 10:e0121359. [PMID: 25798949 PMCID: PMC4370506 DOI: 10.1371/journal.pone.0121359] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Accepted: 01/30/2015] [Indexed: 01/08/2023] Open
Abstract
Implants trigger an inflammatory response, which is important for osseointegration. Here we studied neutrophil extracellular trap (NET) release of human neutrophils in response to sandblasted large-grit acid etched (SLA) implants using fluorescent, confocal laser scanning and scanning electron microscopy. Our studies demonstrate that human neutrophils rapidly adhered to SLA surfaces, which triggered histone citrullination and NET release. Further studies showed that albumin or acetylsalicylic acid had no significant effects on the inflammatory response to SLA surfaces. In contrast to bioinert materials, which do not osseointegrate, the bioactivity of SLA surfaces is coupled with the ability to release NETs. Further investigations are necessary for clarifying the role of NETosis for osseointegration.
Collapse
Affiliation(s)
- Ljubomir Vitkov
- Department of Zoological Structure Research, Cell Biology, University of Salzburg, Salzburg, Austria
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, Saarland University, Homburg, Germany
- * E-mail: (DH); (LV)
| | | | - Astrid Obermayer
- Department of Zoological Structure Research, Cell Biology, University of Salzburg, Salzburg, Austria
| | - Walter Stoiber
- Department of Zoological Structure Research, Cell Biology, University of Salzburg, Salzburg, Austria
| | - Matthias Hannig
- Clinic of Operative Dentistry, Periodontology and Preventive Dentistry, Saarland University, Homburg, Germany
| | - Michaela Klappacher
- Department of Zoological Structure Research, Cell Biology, University of Salzburg, Salzburg, Austria
| | - Dominik Hartl
- Children’s Hospital and Interdisciplinary Center for Infectious Diseases, University of Tuebingen, Tuebingen, Germany
- * E-mail: (DH); (LV)
| |
Collapse
|
14
|
Animal Test Models for Implant-Associated Inflammation and Infections. BIOMEDICAL TECHNOLOGY 2015. [DOI: 10.1007/978-3-319-10981-7_12] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
|
15
|
Ahmed F, Choudhury NR, Dutta NK, Brito e Abreu S, Zannettino A, Duncan E. Interaction of Platelets with Poly(vinylidene fluoride-co-hexafluoropropylene) Electrospun Surfaces. Biomacromolecules 2014; 15:744-55. [DOI: 10.1021/bm4015396] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Furqan Ahmed
- Ian
Wark Research Institute, University of South Australia, Mawson Lakes
Campus, South Australia, Australia
| | - Namita Roy Choudhury
- Ian
Wark Research Institute, University of South Australia, Mawson Lakes
Campus, South Australia, Australia
| | - Naba K. Dutta
- Ian
Wark Research Institute, University of South Australia, Mawson Lakes
Campus, South Australia, Australia
| | - Susana Brito e Abreu
- Ian
Wark Research Institute, University of South Australia, Mawson Lakes
Campus, South Australia, Australia
| | - Andrew Zannettino
- Myeloma
Research Laboratory, School of Medical Science, University of Adelaide, South
Australia, Australia
| | - Elizabeth Duncan
- Myeloma
Research Laboratory, School of Medical Science, University of Adelaide, South
Australia, Australia
| |
Collapse
|
16
|
Lin TH, Tamaki Y, Pajarinen J, Waters HA, Woo DK, Yao Z, Goodman SB. Chronic inflammation in biomaterial-induced periprosthetic osteolysis: NF-κB as a therapeutic target. Acta Biomater 2014; 10:1-10. [PMID: 24090989 DOI: 10.1016/j.actbio.2013.09.034] [Citation(s) in RCA: 146] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Revised: 09/23/2013] [Accepted: 09/24/2013] [Indexed: 02/08/2023]
Abstract
Biomaterial-induced tissue responses in patients with total joint replacement are associated with the generation of wear particles, which may lead to chronic inflammation and local bone destruction (periprosthetic osteolysis). Inflammatory reactions associated with wear particles are mediated by several important signaling pathways, the most important of which involves the transcription factor NF-κB. NF-κB activation is essential for macrophage recruitment and maturation, as well as the production of pro-inflammatory cytokines and chemokines such as TNF-α, IL-1β, IL-6 and MCP1. In addition, NF-κB activation contributes to osteoclast differentiation and maturation via RANK/RANKL signaling, which increases bone destruction and reduces bone formation. Targeting individual downstream cytokines directly (such as TNF-α or IL-1β) may not effectively prevent wear particle induced osteolysis. A more logical upstream therapeutic approach may be provided by direct modulation of the core IκB/IKKα/β/NF-κB signaling pathway in the local environment. However, the timing, dose and strategy for administration should be considered. Suppression of chronic inflammation via inhibition of NF-κB activity in patients with malfunctioning joint replacements may be an effective strategy to mitigate wear particle induced periprosthetic osteolysis.
Collapse
Affiliation(s)
- Tzu-hua Lin
- Department of Orthopaedic Surgery, Stanford University, Stanford, CA, USA
| | | | | | | | | | | | | |
Collapse
|
17
|
Renò F, Paul G, Rizzi M, Gatti G, Marchese L. Poly (D,L) lactic acid blending with vitamin E increases polymer hemocompatibility: An hydrophilic effect. J Appl Polym Sci 2012. [DOI: 10.1002/app.38841] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
18
|
Abrikossova N, Skoglund C, Ahrén M, Bengtsson T, Uvdal K. Effects of gadolinium oxide nanoparticles on the oxidative burst from human neutrophil granulocytes. NANOTECHNOLOGY 2012; 23:275101. [PMID: 22706406 DOI: 10.1088/0957-4484/23/27/275101] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We have previously shown that gadolinium oxide (Gd(2)O(3)) nanoparticles are promising candidates to be used as contrast agents in magnetic resonance (MR) imaging applications. In this study, these nanoparticles were investigated in a cellular system, as possible probes for visualization and targeting intended for bioimaging applications. We evaluated the impact of the presence of Gd(2)O(3) nanoparticles on the production of reactive oxygen species (ROS) from human neutrophils, by means of luminol-dependent chemiluminescence. Three sets of Gd(2)O(3) nanoparticles were studied, i.e. as synthesized, dialyzed and both PEG-functionalized and dialyzed Gd(2)O(3) nanoparticles. In addition, neutrophil morphology was evaluated by fluorescent staining of the actin cytoskeleton and fluorescence microscopy. We show that surface modification of these nanoparticles with polyethylene glycol (PEG) is essential in order to increase their biocompatibility. We observed that the as synthesized nanoparticles markedly decreased the ROS production from neutrophils challenged with prey (opsonized yeast particles) compared to controls without nanoparticles. After functionalization and dialysis, more moderate inhibitory effects were observed at a corresponding concentration of gadolinium. At lower gadolinium concentration the response was similar to that of the control cells. We suggest that the diethylene glycol (DEG) present in the as synthesized nanoparticle preparation is responsible for the inhibitory effects on the neutrophil oxidative burst. Indeed, in the present study we also show that even a low concentration of DEG, 0.3%, severely inhibits neutrophil function. In summary, the low cellular response upon PEG-functionalized Gd(2)O(3) nanoparticle exposure indicates that these nanoparticles are promising candidates for MR-imaging purposes.
Collapse
Affiliation(s)
- Natalia Abrikossova
- Division of Molecular Surface Physics and Nanoscience, Department of Physics, Chemistry and Biology, Linköping University, SE-581 83 Linköping, Sweden.
| | | | | | | | | |
Collapse
|
19
|
Free Radical Production in Immune Cell Systems Induced by Ti, Ti6Al4V and SS Assessed by Chemiluminescence Probe Pholasin Assay. Int J Biomater 2012; 2012:380845. [PMID: 22778739 PMCID: PMC3388343 DOI: 10.1155/2012/380845] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2012] [Accepted: 05/13/2012] [Indexed: 12/13/2022] Open
Abstract
The oxidative burst of human blood cells in the presence of different metal materials was investigated using chemiluminescence assay. Commercial pure titanium (Ti), titanium alloy (Ti6Al4V), and stainless steel 316L (SS) in particulate form with <20 μm in size were used. The effect of particulate materials opsonisation on the upregulation of the respiratory burst production by blood cells was also assessed. The largest chemiluminescence response was achieved after simultaneous injection of the stimulants fMLP+PMA. Moreover, Ti and SS induced a greater inflammatory reaction compared to Ti6Al4V, since the respiratory burst mounted was higher for both materials after opsonisation treatment. These results suggest that in vitro chemiluminescence response and respiratory burst measurements proved to be composition and treatment dependent.
Collapse
|
20
|
Renò F, Rizzi M, Cannas M. Gelatin-based anionic hydrogel as biocompatible substrate for human keratinocyte growth. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2012; 23:565-571. [PMID: 22160746 DOI: 10.1007/s10856-011-4519-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2011] [Accepted: 12/06/2011] [Indexed: 05/31/2023]
Abstract
Ionic hydrogels are biocompatible candidates for skin tissue engineering. Two hydrogels synthesized by crosslinking gelatin with polylysine (positively charged HG1) or polyglutamic acid (negatively charged HG2) were tested using spontaneously immortalized human keratinocytes (HaCaT). HaCaT cells displayed higher adhesion and proliferation onto HG2, forming a continuous and stratified epithelium after 7 days. Moreover HaCaT cells grown onto HG2 showed a decreased Epilysin and Filaggrin expression, while transglutaminase-1 expression was increased. Those data indicate that human keratinocyte can form a stratified epithelium onto HG2 that could therefore be an useful tool for skin tissue engineering.
Collapse
Affiliation(s)
- Filippo Renò
- Research Centre for Biocompatibility and Tissue Engineering, Department of Experimental and Clinical Medicine, University of Eastern Piedmont A. Avogadro, Novara, Italy.
| | | | | |
Collapse
|
21
|
Gonçalves IC, Martins MCL, Barbosa JN, Oliveira P, Barbosa MA, Ratner BD. Platelet and leukocyte adhesion to albumin binding self-assembled monolayers. JOURNAL OF MATERIALS SCIENCE. MATERIALS IN MEDICINE 2011; 22:2053-2063. [PMID: 21755398 DOI: 10.1007/s10856-011-4381-9] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/25/2011] [Accepted: 06/14/2011] [Indexed: 05/31/2023]
Abstract
This study reports the use of tetraethylene glycol-terminated self-assembled monolayers (EG(4) SAMs) as a background non-fouling surface to study the effect of an 18 carbon ligand (C18) on albumin selective and reversible adsorption and subsequent platelet and leukocyte adhesion. Surface characterization techniques revealed an efficient immobilization of different levels of C18 ligand on EG(4) SAMs and an increase of surface thickness and hydrophobicity with the increase of C18 ligands. Albumin adsorption increased as the percentage of C18 ligands on the surface increased, but only 2.5%C18 SAMs adsorbed albumin in a selective and reversible way. Adherent platelets also increased with the amount of immobilized C18. Pre-immersion of samples in albumin before contact with platelets demonstrated an 80% decrease in platelet adhesion. Pre-immersion in plasma was only relevant for 2.5%C18 SAMs since this was the only surface to have less platelet adhesion compared to buffer pre-immersion. EG(4) SAMs adhered negligible amounts of leukocytes, but surfaces with C18 ligands have some adherent leukocytes. Except for 10%C18 SAMs, which increased leukocyte adhesion after albumin pre-adhesion, protein pre-immersion did not influence leukocyte adhesion. It has been shown that a surface with a specific surface concentration of albumin-binding ligands (2.5%C18 SAMs) can recruit albumin selectively and reversibly and minimize the adhesion of platelets, despite still adhering some leukocytes.
Collapse
Affiliation(s)
- Inês C Gonçalves
- INEB-Instituto de Engenharia Biomédica, Universidade do Porto, Porto, Portugal.
| | | | | | | | | | | |
Collapse
|
22
|
Franz S, Rammelt S, Scharnweber D, Simon JC. Immune responses to implants - a review of the implications for the design of immunomodulatory biomaterials. Biomaterials 2011; 32:6692-709. [PMID: 21715002 DOI: 10.1016/j.biomaterials.2011.05.078] [Citation(s) in RCA: 888] [Impact Index Per Article: 68.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2011] [Accepted: 05/26/2011] [Indexed: 12/11/2022]
Abstract
A key for long-term survival and function of biomaterials is that they do not elicit a detrimental immune response. As biomaterials can have profound impacts on the host immune response the concept emerged to design biomaterials that are able to trigger desired immunological outcomes and thus support the healing process. However, engineering such biomaterials requires an in-depth understanding of the host inflammatory and wound healing response to implanted materials. One focus of this review is to outline the up-to-date knowledge on immune responses to biomaterials. Understanding the complex interactions of host response and material implants reveals the need for and also the potential of "immunomodulating" biomaterials. Based on this knowledge, we discuss strategies of triggering appropriate immune responses by functional biomaterials and highlight recent approaches of biomaterials that mimic the physiological extracellular matrix and modify cellular immune responses.
Collapse
Affiliation(s)
- Sandra Franz
- Department of Dermatology, Venerology and Allergology, University Leipzig, 04103 Leipzig, Germany.
| | | | | | | |
Collapse
|
23
|
Svensson O, Arnebrant T. Mucin layers and multilayers — Physicochemical properties and applications. Curr Opin Colloid Interface Sci 2010. [DOI: 10.1016/j.cocis.2010.05.015] [Citation(s) in RCA: 73] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
24
|
Sandberg T, Karlsson Ott M, Carlsson J, Feiler A, Caldwell KD. Potential use of mucins as biomaterial coatings. II. Mucin coatings affect the conformation and neutrophil-activating properties of adsorbed host proteins--toward a mucosal mimic. J Biomed Mater Res A 2010; 91:773-85. [PMID: 19051307 DOI: 10.1002/jbm.a.32315] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
In continuation of our recent fractionation and characterization study on mucins of bovine salivary (BSM), porcine gastric (PGM), and human salivary (MG1) origin, this study evaluates the effect of mucin precoating on the conformation and neutrophil-activating properties of host proteins adsorbed to a polyethylene terephthalate-based model biomaterial. Microscopy combined with assays for the neutrophil releases of reactive oxygen species and human neutrophil lipocalin showed that mucin precoating greatly reduced the strong immune-response normally induced by adsorbed immunoglobulin G (IgG) and secretory immunoglobulin A (sIgA), respectively. A similar finding was made for the proinflammatory fibrinogen. Although the total uptakes of these proteins depended on the mucin surface concentration, a detailed composite analysis suggested the fraction of surface-exposed protein to be a stronger determinant of coating performance. The unexpectedly low neutrophil activation showed by composites containing near-monolayer concentrations of exposed IgG and sIgA, respectively, suggested that these act synergistically with mucin on the surface. In support of this hypothesis, quartz crystal microbalance with dissipation monitoring measurements revealed that a preadsorbed BSM layer stabilizes IgG through complexation on a polymeric model surface. Our findings link well to the complex in vivo situation and suggest that functional mucosal mimics can be created in situ for improved biomaterials performance.
Collapse
Affiliation(s)
- Tomas Sandberg
- Division of Surface Biotechnology, Department of Physical and Analytical Chemistry, BMC, Uppsala University, Uppsala SE-751 23, Sweden
| | | | | | | | | |
Collapse
|
25
|
Surface analysis of pure and complex mucin coatings on a real-type substrate using individual and combined mBCA, ELLA, and ELISA. J Colloid Interface Sci 2009; 333:180-7. [DOI: 10.1016/j.jcis.2009.01.069] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2008] [Revised: 01/20/2009] [Accepted: 01/24/2009] [Indexed: 11/21/2022]
|
26
|
The response of endothelial cells to polymer surface composed of nanometric micelles. N Biotechnol 2009; 25:235-43. [PMID: 19429543 DOI: 10.1016/j.nbt.2009.01.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2008] [Revised: 01/08/2009] [Accepted: 01/08/2009] [Indexed: 11/22/2022]
Abstract
The response of endothelial cells (ECs) to a polyurethane (PU) characteristic of surface micelles ( approximately 89nm in diameter) and two novel nanocomposites (PU-Au) and (PU-Ag) containing smaller surface micelles ( approximately 14-22nm in diameter) was investigated. The molecular mechanism by which ECs reacted to nanometric surface micelles was examined. On PU-Au and PU-Ag, cell migration rate was promoted. This was accompanied by the upregulation of endothelial nitric oxide synthase (eNOS) and phosphorylated-Akt (p-Akt) expression. The induced eNOS and p-Akt expression was inhibited by LY294002, indicating that the effect of nanocomposites could be attributed to the PI3K pathway. An elevation of intracellular calcium concentration was noted. Additionally, more actin fibers were induced by PU-Au and PU-Ag. Reduction of actin expression upon addition of Y-27632 (an inhibitor of Rho-GTPase) and SU-1498 (an inhibitor of VEGF-R2) was observed. It was concluded that the nanometric micelles on PU surface may interact with ECs and accelerate their migration by increasing cytoplasmic Ca(2+) and stimulating the PI3K/Akt/eNOS signaling pathway.
Collapse
|
27
|
Barbosa JN, Martins MCL, Freitas SC, Gonçalves IC, Águas AP, Barbosa MA. Adhesion of human leukocytes on mixtures of hydroxyl- and methyl-terminated self-assembled monolayers: Effect of blood protein adsorption. J Biomed Mater Res A 2009; 93:12-9. [DOI: 10.1002/jbm.a.32480] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
|
28
|
Zelisko PM, Flora KK, Brennan JD, Brook MA. Water-in-Silicone Oil Emulsion Stabilizing Surfactants Formed From Native Albumin and α,ω-Triethoxysilylpropyl-Polydimethylsiloxane. Biomacromolecules 2008; 9:2153-61. [PMID: 18627199 DOI: 10.1021/bm800226z] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Paul M. Zelisko
- McMaster University, Department of Chemistry 1280 Main Street West, Hamilton, Ontario, Canada L8S 4M1
| | - Kulwinder K. Flora
- McMaster University, Department of Chemistry 1280 Main Street West, Hamilton, Ontario, Canada L8S 4M1
| | - John D. Brennan
- McMaster University, Department of Chemistry 1280 Main Street West, Hamilton, Ontario, Canada L8S 4M1
| | - Michael A. Brook
- McMaster University, Department of Chemistry 1280 Main Street West, Hamilton, Ontario, Canada L8S 4M1
| |
Collapse
|
29
|
Skoglund C, Wetterö J, Skogh T, Sjöwall C, Tengvall P, Bengtsson T. C‐reactive protein and C1q regulate platelet adhesion and activation on adsorbed immunoglobulin G and albumin. Immunol Cell Biol 2008; 86:466-74. [DOI: 10.1038/icb.2008.9] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Caroline Skoglund
- Department of Physics, Chemistry and Biology, Materials in Medicine, Division of Applied Physics, Linköping UniversityLinköpingSweden
- Department of Medical Sciences, Division of Pharmacology, Cardiovascular Inflammation Research Center, Linköping UniversityLinköpingSweden
| | - Jonas Wetterö
- Department of Clinical and Experimental Medicine, Division of Rheumatology/Autoimmunity and Immune Regulation Unit, Linköping UniversityLinköpingSweden
| | - Thomas Skogh
- Department of Clinical and Experimental Medicine, Division of Rheumatology/Autoimmunity and Immune Regulation Unit, Linköping UniversityLinköpingSweden
| | - Christopher Sjöwall
- Department of Clinical and Experimental Medicine, Division of Rheumatology/Autoimmunity and Immune Regulation Unit, Linköping UniversityLinköpingSweden
| | - Pentti Tengvall
- Department of Physics, Chemistry and Biology, Materials in Medicine, Division of Applied Physics, Linköping UniversityLinköpingSweden
| | - Torbjorn Bengtsson
- Department of Physics, Chemistry and Biology, Materials in Medicine, Division of Applied Physics, Linköping UniversityLinköpingSweden
- Department of Medical Sciences, Division of Pharmacology, Cardiovascular Inflammation Research Center, Linköping UniversityLinköpingSweden
| |
Collapse
|
30
|
In vitro evaluation of the behaviour of human polymorphonuclear neutrophils in direct contact with chitosan-based membranes. J Biotechnol 2007; 132:218-26. [DOI: 10.1016/j.jbiotec.2007.07.497] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2007] [Revised: 06/22/2007] [Accepted: 07/06/2007] [Indexed: 11/22/2022]
|
31
|
Renò F, Traina V, Cannas M. Haemocompatibility of vitamin-E-enriched poly(D,L-lactic acid). JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2007; 18:785-97. [PMID: 17623558 DOI: 10.1163/156856207781034098] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Poly(D,L-lactic acid) (P(D,L)LA) is a biocompatible and biodegradable polymer whose use is limited to orthopaedic applications. In fact, the mechanical properties of P(D,L)LA are not usually utilized for cardiovascular applications, as the polymer has been proven to activate both granulocyte- and platelet-causing inflammation. In order to improve P(D,L)LA haemocompatibility vitamin E (alpha-tocoferol, 10-30% (w/w)), a natural biological anti-oxidant and anti-inflammatory agent, was added during the solvent casting of P(D,L)LA film. The P(D,L)LA films obtained were then analysed using FT-IR analysis to assess vitamin E presence; polymer surface wettability and human plasma protein adsorption were measured by sessile drop test, spectrophotometric protein quantification and Western blot, respectively, and polymer haemocompatibility was assessed measuring platelet and granulocyte adhesion and whole blood coagulation. Vitamin E presence caused an increase in polymer surface wettability and human plasma protein adsorption. The combination of both effects may account for the decrease in platelet and granulocyte adhesion and for the doubling of whole blood clotting time measured onto vitamin-E-enriched P(D,L)LA compared to control P(D,L)LA. Our results indicate that vitamin E addition improves P(D,L)LA haemocompatibility, making this polymer suitable for cardiovascular application.
Collapse
Affiliation(s)
- Filippo Renò
- Human Anatomy Laboratory, Research Center for Biocompatibility Tissue Engineering, Experimental and Clinical Medicine Department, University of Eastern Piedmont A. Avogadro, Via Solaroli 17, 28100 Novara, Italy
| | | | | |
Collapse
|
32
|
Wilhelm L, Zippel R, von Woedtke T, Kenk H, Hoene A, Patrzyk M, Schlosser M. Immune response against polyester implants is influenced by the coating substances. J Biomed Mater Res A 2007; 83:104-13. [PMID: 17385232 DOI: 10.1002/jbm.a.31209] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
The aim of this study was to evaluate the influence of the coating of polymer implants upon the individual humoral immune response to the polymer matrix. Intramuscular implantation and explantation of samples from three different polyester vascular prostheses coated with collagen, gelatin, or human serum albumin was performed in LEW.1A rats and subsequently compared to sham operated control animals. Antibodies in serum samples were detected by means of enzyme immunoassays employing particles of pure polyester and the respective prosthesis, or solid phase bound coating substances as targets. In contrast to the controls, all animals with implants demonstrated a high antipolyester antibody response with a broad individual variability graduated according to the prosthesis coatings: gelatin > albumin > collagen. This was further significantly increased after the second implantation/first explantation and declined following the last explantation. Only animals with albumin-coated implants revealed specific antibodies to the coating as well as the strongest overall immunological reaction against the prosthesis already on day 8. Specificity of polymer antibodies was demonstrated by competitive inhibition of median antibody binding. Our results showed a specific immune reaction as a result of the applied polymer, which varied due to the surface-coating and individual factors.
Collapse
Affiliation(s)
- Lutz Wilhelm
- Department of Surgery, University of Greifswald, Greifswald D-17487, Germany
| | | | | | | | | | | | | |
Collapse
|
33
|
Sandberg T, Carlsson J, Ott MK. Mucin Coatings Suppress Neutrophil Adhesion to a Polymeric Model Biomaterial. Microsc Res Tech 2007; 70:864-8. [PMID: 17576123 DOI: 10.1002/jemt.20489] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Following our recent study on the fractionation, characterization, and model adsorption of mucins derived from bovine salivary glands (BSM), porcine stomach scrapings (PGM), and human whole saliva (MG1), we here present a microscopic evaluation of the interactions between mucin-coated substrates and human neutrophils. Our results show that surface-coating with BSM, PGM, and MG1 can be effectively used to suppress the adhesion of neutrophils to a polymeric model biomaterial (Thermanox). Neutrophil morphologies found on Thermanox substrates coated with mucins resemble those observed for nonactivated neutrophils found in circulation. Notably, low neutrophil adhesion can be obtained at a significantly lower coating concentration (0.125 mg/mL) for the compositionally complex MG1 mucin than for the relatively pure BSM and PGM mucins (1 mg/mL). Furthermore, since coating at a low BSM and PGM concentration (0.25 mg/mL) results in higher cell counts and more spread cells than in the high-concentration case, we suggest that dense mucin surface packing is critical for good coating performance. In conclusion, the present study demonstrates how mucins from three different sources, of different compositional and structural status, efficiently can be used to suppress neutrophil adhesion and activation. This finding makes them potent candidates for use as biomaterial coatings.
Collapse
Affiliation(s)
- Tomas Sandberg
- Division of Surface Biotechnology, Department of Physical and Analytical Chemistry, BMC, Uppsala University, SE-751 23 Uppsala, Sweden.
| | | | | |
Collapse
|
34
|
Lilius EME, Nuutila JTJ. Particle-induced myeloperoxidase release in serially diluted whole blood quantifies the number and the phagocytic activity of blood neutrophils and opsonization capacity of plasma. LUMINESCENCE 2006; 21:148-58. [PMID: 16502478 DOI: 10.1002/bio.899] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Luminol-amplified chemiluminescence (CL) from phagocytes has previously been shown to be almost completely dependent on the release of myeloperoxidase (MPO) from azurophilic granules. We measured the luminol-amplified chemiluminescence response (WBCL) by using serially diluted whole blood. In these experiments, non-opsonized and serum-opsonized zymosan (NWBCL and OWBCL, respectively) were used concurrently as phagocytosable particles. We found two whole-blood dilution ranges with clinical significance: first, <0.04% of whole blood in the reaction volume, where MPO released by the zymosan-activated leukocyte population came almost totally from neutrophils and the OWBCL response could be exploited as a measure of a neutrophil count in a given blood specimen, despite the pathophysiological state of the host. In contrast, the NWBCL response was two-fold in blood samples from bacterial infection patients compared to those of controls and patients with viral infection, suggesting the use of NWBCL for the differential diagnosis of bacterial infections from viral infections; second, 0.16-1.2% of whole blood in the reaction volume, where the opsonization capacity of plasma (OC(50)) can be determined. We also found that at whole blood content >0.04%, erythrocytes quickly start to absorb chemiluminescence light, and that at whole blood content >1.2%, plasma proteins, most probably albumin and fibrinogen, start to inhibit MPO release.
Collapse
Affiliation(s)
- Esa-Matti Eino Lilius
- University of Turku, Department of Biochemistry, Vatselankatu 2, 20014 Turku, Finland.
| | | |
Collapse
|
35
|
Sandeman SR, Howell CA, Phillips GJ, Lloyd AW, Davies JG, Mikhalovsky SV, Tennison SR, Rawlinson AP, Kozynchenko OP, Owen HLH, Gaylor JDS, Rouse JJ, Courtney JM. Assessing the in vitro biocompatibility of a novel carbon device for the treatment of sepsis. Biomaterials 2005; 26:7124-31. [PMID: 15967498 DOI: 10.1016/j.biomaterials.2005.05.019] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2005] [Accepted: 05/06/2005] [Indexed: 10/25/2022]
Abstract
The aim of the present study was to conduct a preliminary investigation into the blood biocompatibility of a novel, uncoated carbon for use in a filtration/adsorption device for the treatment of sepsis. Carbon well prototypes were manufactured from phenol-formaldehyde-aniline-based pyrolysed carbons using monolithic polymer technology. Inflammatory blood cell and plasma protein mediation of the inflammatory response were evaluated using the novel carbon prototypes and compared with dialyser membrane and tissue culture plate controls. Assays determining monocyte and granulocyte adhesion, platelet adhesion and activation, granulocyte activation and complement activation were performed. Preliminary findings suggest an adsorptive but passivating carbon surface. Moderate levels of monocyte and granulocytes adhesion were seen in conjunction with adsorption of plasma proteins to the carbon surface. Activation of granulocyte and adherent platelets was not detected and the complement cascade was not activated by the carbons, indicating a surface compatible with blood contact. The results support the further development of the proposed carbon-based device for the treatment of sepsis.
Collapse
Affiliation(s)
- Susan R Sandeman
- Biomedical Materials Research Group, School of Pharmacy and Biomolecular Sciences, University of Brighton, UK
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
36
|
Nilsdotter-Augustinsson A, Claesson C, Lindgren PE, Lundqvist-Gustafsson H, Ohman L. Adherence of Staphylococcus epidermidis to extracellular matrix proteins and effects of fibrinogen-bound bacteria on oxidase activity and apoptosis in neutrophils. APMIS 2005; 113:361-73. [PMID: 16011663 DOI: 10.1111/j.1600-0463.2005.apm_113508.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Staphylococcus epidermidis often causes foreign-body infections such as those associated with hip prostheses, but the underlying pathogenic mechanisms are not fully understood. We performed spectrophotometry to study the ability of S. epidermidis to bind to immobilised fibrinogen, fibronectin, vitronectin, and collagen. The strains were isolated from infected hip prostheses or from normal flora and the well-known protein-binding strain Staphylococcus aureus Cowan was used as positive control. We also analysed the interaction between neutrophils and a fibrinogen-bound prosthesis-derived strain of S. epidermidisby measuring chemiluminescence to determine the neutrophil oxidative response and binding of annexin V to indicate neutrophil apoptosis. We found that binding of S. epidermidis to extracellular matrix proteins varied under different growth conditions, and that prosthesis isolates adhered better to vitronectin than did strains from normal flora. The oxidative response caused by fibrinogen-bound S. epidermidis was not above the background level, which was in marked contrast to the distinct response induced by fibrinogen-associated S. aureus Cowan. Furthermore, fibrinogen-adhering S. epidermidis retarded neutrophil apoptosis. We conclude that surface-bound S. epidermidis induces only a weak inflammatory response, which in combination with the ability of the adherent bacteria to retard neutrophil apoptosis may contribute to low-grade inflammation and loosening of prostheses.
Collapse
Affiliation(s)
- Asa Nilsdotter-Augustinsson
- Divisions of Infectious Diseases, Department of Molecular and Clinical Medicine, Linköping University, Linköping, Sweden
| | | | | | | | | |
Collapse
|
37
|
Renò F, Lombardi F, Cannas M. Polystyrene surface coated with vitamin E modulates human granulocyte adhesion and MMP-9 release. ACTA ACUST UNITED AC 2005; 21:73-80. [PMID: 15113561 DOI: 10.1016/j.bioeng.2003.11.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2003] [Revised: 11/03/2003] [Accepted: 11/19/2003] [Indexed: 10/26/2022]
Abstract
Vitamin E (Vit.E, alpha-tocopherol) is a natural biological antioxidant and antinflammatory agent, which protects cells from the effects of free radicals and inhibits inflammation. For such properties Vit.E has been used to improve the biocompatibility of materials such as cellulose membrane for hemodialysis. In this study granulocytes adhesion and activation have been studied after contact with normal cell culture grade polystyrene (PS) and Vit.E-coated polystyrene (Vit.E 0.1 and 0.3% (v/v)) using optical microscopy, flow cytometry and substrate zymography. Vit.E increased the number of adherent granulocytes both at 0.1% (11470 +/- 1064 cells/cm(2), P < 0.01) and 0.3% ( 13706 +/-818) cells/cm(2), P < 0.001) concentration compared to normal PS (5529+/-692 cells/cm(2)). The morphology of granulocytes adherent to Vit.E-PS appeared lightly altered and no differences have been observed in their respiratory burst compared to control granulocyte, while matrix metalloproteinase 9 or gelatinase B (MMP-9) release and activation were increased compared to the normal PS samples. Our data indicate that Vit.E-coated surface induced an increase in granulocytes adhesion and MMP-9 release in the absence of the typical oxidative stress, hallmark of granulocytes activation. A possible explanation of the phenomenon is that Vit.E modifies the surface protein adsorption thus increasing cell adhesion and in turn MMP-9 releasing.
Collapse
Affiliation(s)
- F Renò
- Department of Medical Sciences, University of Eastern Piedmont "A.Avogadro", Via Solaroli 17, 28100 Novara, Italy
| | | | | |
Collapse
|
38
|
Jansson E, Tengvall P. Adsorption of albumin and IgG to porous and smooth titanium. Colloids Surf B Biointerfaces 2004; 35:45-51. [PMID: 15261055 DOI: 10.1016/j.colsurfb.2004.02.007] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2002] [Accepted: 02/16/2004] [Indexed: 11/22/2022]
Abstract
The possibility to load submicrometer porous titanium surfaces with relatively small proteins, albumin and immunoglobulin G (IgG) was investigated. The loading ability is of interest due to the possibility of slow release of molecules from biomaterial surfaces, and may be important for the manipulation of wound healing around prostheses. Iodine-125 (125I) labeled albumin and IgG were adsorbed onto smooth and to porous titanium with a pore diameter of 200-300 nm. The smooth and porous surfaces were divided into three groups: hydrophilic, hydrophobic, or to amine-terminated silane (3-aminopropyltriethoxysilane) that bound proteins via glutaraldehyde. The protein solution pH and protein concentrations were varied, and the adsorption experiments made without or in the presence of calcium and magnesium ions. The adsorbed amounts were quantified with a gamma counter. Two to eleven times more proteins adsorbed onto porous than smooth surfaces and the adsorbed amounts increased with increasing protein concentration (0.1-10 mg/ml) during a constant incubation time. The elutability by sodium dodecyl sulphate (SDS) was incomplete on porous surfaces.
Collapse
Affiliation(s)
- Eva Jansson
- Laboratory of Applied Physics, Department of Physics and Measurement Technology, Linköping University, SE-581 83 Linköping, Sweden
| | | |
Collapse
|
39
|
Schmalstieg FC, Zwischenberger JB. The Artificial Lung/Inflammatory Interface: A Refocus of the Problem. ASAIO J 2004; 50:6-8. [PMID: 14763485 DOI: 10.1097/01.mat.0000107299.32593.5d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Affiliation(s)
- Frank C Schmalstieg
- Department of Pediatrics, The University of Texas Medical Branch, Galveston, Texas 77555-0369, USA.
| | | |
Collapse
|
40
|
Nimeri G, Majeed M, Elwing H, Ohman L, Wetterö J, Bengtsson T. Oxygen radical production in neutrophils interacting with platelets and surface-immobilized plasma proteins: Role of tyrosine phosphorylation. J Biomed Mater Res A 2003; 67:439-47. [PMID: 14566784 DOI: 10.1002/jbm.a.10081] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
The interaction between neutrophil granulocytes and platelets is considered to play an important role in the inflammatory process induced by an implanted foreign material. However, the cellular mechanisms involved remain incompletely understood. We used a luminol-dependent chemiluminescence (CL) technique to analyze the generation of reactive oxygen species (ROS) in human neutrophils interacting with different plasma protein-coated surfaces in the presence or absence of unstimulated or stimulated platelets. The role of tyrosine phosphorylation in the regulation of NADPH oxidase activity was evaluated with quantitative fluorescence microscopy and the specific tyrosine kinase inhibitor genistein. We found that the ROS-production is 2 to 3 times higher in neutrophils on immunoglobulin G (IgG)-coated surfaces than in cells interacting with albumin- or fibrinogen-coated surfaces. Incubation with superoxide dismutase and catalase revealed that about 45% of the ROS was released extracellularly on IgG surfaces whereas corresponding values were 90% and 85% in neutrophils interacting with albumin and fibrinogen, respectively. The presence of platelets markedly increased the extracellular generation of ROS, mainly in neutrophils interacting with IgG- or fibrinogen-coated surfaces whereas the intracellular production was only modestly affected. Quantitative fluorescence microscopy of neutrophils stained with FITC-conjugated anti-phosphotyrosine antibodies showed a correlation between tyrosine phosphorylation, cell spreading, and ROS production. Platelets markedly amplified the anti-phosphotyrosine staining on both fibrinogen- and IgG-coated surfaces whereas the low level of tyrosine phosphorylation in neutrophils on albumin-coated surfaces was not further elevated by platelets. Furthermore, the tyrosine kinase inhibitor genistein inhibited both extra- and intracellular ROS production in neutrophils regardless of the presence of platelets. We demonstrate that plasma protein coating and the presence of platelets are crucial for the inflammatory response of adhering neutrophils and that the oxidative response correlates with the extent of tyrosine phosphorylation of proteins in focal contacts.
Collapse
Affiliation(s)
- Ghada Nimeri
- Division of Medical Microbiology, Department of Molecular and Clinical Medicine, Faculty of Health Sciences, Linköping University, SE-581 85 Linköping, Sweden
| | | | | | | | | | | |
Collapse
|
41
|
Renò F, Lombardi F, Cannas M. UHMWPE oxidation increases granulocytes activation: a role in tissue response after prosthesis implant. Biomaterials 2003; 24:2895-900. [PMID: 12742728 DOI: 10.1016/s0142-9612(03)00128-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Ultra-high molecular weight polyethylene (UHMWPE), a biopolymer widely used in orthopaedic implants, is oxidized during gamma-ray sterilization; such surface oxidation is considered as major responsible for inflammation and prosthesis failure. As granulocytes are involved in first contact inflammation, we have measured their oxidative burst by flow cytometry using dihydrorhodamine 123 (DRH) to evaluate their activation following contact with normal and oxidized UHMWPE. Peripheral blood cells (obtained by lysed blood) were loaded with DRH, seeded onto polystyrene, normal and heat-oxidized UHMWPE disks for 30min and then collected for analysis. Granulocytes were individuated using FSC and SSC signals and their cell associated green fluorescence was analyzed. Both normal and oxidized UHMWPE stimulated granulocytes activation as showed by the mean fluorescence emitted (109.3+/-3.8 and 150.1+/-9.2, respectively) compared to control samples (81.6+/-0.3). Moreover oxidized UHMWPE activated a significantly higher percentage of granulocytes (73.35+/-5.2%) compared to not-oxidized UHMWPE (21.5+/-3.8%). UHMWPE surface oxidation responsible for increased granulocyte activation seems to play a role in tissue response to implants.
Collapse
Affiliation(s)
- F Renò
- Department of Medical Sciences, Human Anatomy Laboratory, Research Center for Biocompatibility, University of Eastern Piedmont A. Avogadro, Via Solaroli 17, 28100 Novara, Italy
| | | | | |
Collapse
|
42
|
Wetterö J, Askendal A, Tengvall P, Bengtsson T. Interactions between surface-bound actin and complement, platelets, and neutrophils. J Biomed Mater Res A 2003; 66:162-75. [PMID: 12833443 DOI: 10.1002/jbm.a.10591] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Actin exists as globular (G) monomers or polymeric filaments (F) in the cytoplasm of eukaryotic cells, mediating cell morphologic changes and motility. Large amounts of this protein may be released out to the extracellular compartment during tissue injury, but little is known about its role in biomaterial-related inflammation. We immobilized actin to methylated glass, methylated and aminated silicon, and gold model surfaces and studied the subsequent blood serum deposition and complement activation, generation of reactive oxygen species (ROS), and adhesion and aggregation of neutrophils and platelets. Null ellipsometry showed that approximately one monolayer of G-actin can be immobilized onto the model surfaces and that actin in buffer polymerized on top of this by the addition of K(+) and Mg(2+) ions to form a thicker layer of firmly bound F-actin. After serum incubation, F-actin bound low amounts of anti-complement factor 1q (anti-C1q). Cell responses upon contact with actin-coated surfaces were analyzed by luminol-amplified chemiluminescence, lumi-aggregometry, and fluorescence microscopy. It was shown that surface-triggered aggregation, spreading, and generation of ROS are down-regulated and comparable to the response by adsorbed albumin. However, F-actin on gold surfaces recruited platelets in a C1q-dependent manner. We conclude that in vitro adsorbed actin is a weak complement, platelet, and neutrophil activator, but that F-actin associates with both C1q and platelets.
Collapse
Affiliation(s)
- Jonas Wetterö
- Division of Applied Physics, Department of Physics and Measurement Technology, Biology and Chemistry, Linköping University, SE-581 83 Linköping, Sweden.
| | | | | | | |
Collapse
|
43
|
Wetterö J, Tengvall P, Bengtsson T. Platelets stimulated by IgG-coated surfaces bind and activate neutrophils through a selectin-dependent pathway. Biomaterials 2003; 24:1559-73. [PMID: 12559816 DOI: 10.1016/s0142-9612(02)00543-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Blood platelets bind rapidly to foreign surfaces and interact with adsorbed proteins and neutrophil granulocytes. We demonstrate by use of luminol-amplified chemiluminescence under stirred and non-stirred conditions that platelets at IgG-coated surfaces amplify the neutrophil extracellular release of reactive oxygen species (ROS). The neutrophil response involved tyrosine phosphorylation, but was only in part induced by neutrophil F(c gamma)-receptor stimulation. The platelet mediated effects were contact-dependent since the respiratory burst was inhibited when the IgG-stimulated platelets were removed by filtration, but not when they were fixed in paraformaldehyde. Bodipyphallacidin-staining of filamentous actin (F-actin) revealed that an actin-dependent platelet adhesion supported the subsequent adhesion and spreading of neutrophils. The neutrophil ROS-response was lowered when the interaction between platelet P-selectin (CD62P) and neutrophil P-selectin glycoprotein ligand-l (PSGL-1 or CD162) was inhibited. The blocking of L-selectin (CD62L) or blocking of the interaction between platelet glycoprotein (Gp) IIb/IIIa and neutrophil complement receptor 3 (CR3) showed no effect. We conclude that platelet activation on immobilized IgG trigger a contact-dependent "frustrated" phagocytosis by neutrophils, associated with a release of toxic ROS.
Collapse
Affiliation(s)
- Jonas Wetterö
- Division of Applied Physics, Department of Physics and Measurement Technology, Biology and Chemistry, Linköping University, SE-581 83 Linköping, Sweden.
| | | | | |
Collapse
|