1
|
Oberlintner A, Shvalya V, Santhosh NM, Košiček M, Jerman I, Huš M, Cvelbar U, Novak U, Likozar B. Janus nanocellulose membrane by nitrogen plasma: Hydrophilicity to hydrophobicity selective switch. Carbohydr Polym 2024; 345:122558. [PMID: 39227097 DOI: 10.1016/j.carbpol.2024.122558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 07/26/2024] [Accepted: 07/29/2024] [Indexed: 09/05/2024]
Abstract
Cellulose nanofibrils are one of the keystone materials for sustainable future, yet their poor water repellency hinders their push into industrial applications. Due to complexity and poor economical outcome and/or processing toxicity of the existing hydrophobization methods, nanocellulose loses against its antagonist plastic in medical and food industries. Herein, we demonstrate for the first time the "one-side selective water-repellency activation" in nanocellulose membranes by the means of mild N2-plasma treatment, exhibiting lowest wettability after 20 s of treatment. Hydrophobicity and accompanying Janus character were justified by the topological, chemical and structural reorganizations in cellulose nanofibrils. The findings suggest that the mechanism behind the hydrophilic/hydrophobic change primarily relies on the interplay between OH removal and appearance of SiCH3, originating from the polysiloxanes-based substrate, as well as complementary CNH2 groups formation. First-principles calculations show that NH2 groups moderately increase hydrophobicity, while various SiCH3 substitutions wholly change the character of the surface to repel water. Using nitrogen is shown to be crucial, as N(H)Si(CH3)3 groups induce greater hydrophobicity than simple OSi(CH3)3. Finally, the obtained materials absorb water on the hydrophilic side, while remaining hydrophobic on the other, exhibit high tensile strength, and protection against UV light, demonstrating applicability over wide range of applications.
Collapse
Affiliation(s)
- Ana Oberlintner
- Department of Catalysis and Chemical Reaction Engineering, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia.
| | - Vasyl Shvalya
- Department of Gaseous Electronics, Institute Jožef Stefan, Jamova 39, SI-1000 Ljubljana, Slovenia
| | - Neelakandan M Santhosh
- Department of Gaseous Electronics, Institute Jožef Stefan, Jamova 39, SI-1000 Ljubljana, Slovenia
| | - Martin Košiček
- Department of Gaseous Electronics, Institute Jožef Stefan, Jamova 39, SI-1000 Ljubljana, Slovenia
| | - Ivan Jerman
- Laboratory for Coating Development, Department of Materials Chemistry, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
| | - Matej Huš
- Department of Catalysis and Chemical Reaction Engineering, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia; Association for Technical Culture of Slovenia (ZOTKS), Zaloška 65, SI-1000 Ljubljana, Slovenia; Institute for the Protection of Cultural Heritage of Slovenia (ZVKDS), Poljanska 40, SI-1000 Ljubljana, Slovenia
| | - Uroš Cvelbar
- Department of Gaseous Electronics, Institute Jožef Stefan, Jamova 39, SI-1000 Ljubljana, Slovenia
| | - Uroš Novak
- Department of Catalysis and Chemical Reaction Engineering, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia.
| | - Blaž Likozar
- Department of Catalysis and Chemical Reaction Engineering, National Institute of Chemistry, Hajdrihova 19, SI-1000 Ljubljana, Slovenia
| |
Collapse
|
2
|
Prasad K, Rifai A, Recek N, Schuessler D, Levchenko I, Murdock A, Mozetič M, Fox K, Alexander K. Nanocarbon-Polymer Composites for Next-Generation Breast Implant Materials. ACS APPLIED MATERIALS & INTERFACES 2024; 16:50251-50266. [PMID: 39264232 DOI: 10.1021/acsami.4c08193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/13/2024]
Abstract
Most breast implants currently used in both reconstructive and cosmetic surgery have a silicone outer shell, which, despite much progress, remains susceptible to mechanical failure, infection, and foreign body response. This study shows that the durability and biocompatibility of breast implant-grade silicone can be enhanced by incorporating carbon nanomaterials of sp2 and sp3 hybridization into the polymer matrix and onto its surface. Plasma treatment of the implant surface can be used to modify platelet adhesion and activation to prevent thrombosis, postoperative infection, and inflammation disorders. The addition of 0.8% graphene flakes resulted in an increase in mechanical strength by 64% and rupture strength by around 77% when compared to pure silicone, whereas when nanodiamond (ND) was used as the additive, the mechanical strength was increased by 19.4% and rupture strength by 37.5%. Composites with a partially embedded surface layer of either graphene or ND showed superior antimicrobial activity and biocompatibility compared to pure silicone. All composite materials were able to sustain the attachment and growth of human dermal fibroblast, with the preferred growth noted on ND-coated surfaces when compared to graphene-coated surfaces. Exposure of these materials to hydrogen plasma for 5, 10, and 20 s led to substantially reduced platelet attachment on the surfaces. Hydrogen-treated pure silicone showed a decrease in platelet attachment for samples treated for 5-20 s, whereas silicone composite showed an almost threefold decrease in platelet attachment for the same plasma treatment times. The absence of platelet activation on the surface of composite materials suggests a significant improvement in hemocompatibility of the material.
Collapse
Affiliation(s)
- Karthika Prasad
- School of Engineering, College of Engineering, Computing and Cybernetics, The Australian National University, Canberra, ACT 2600, Australia
| | - Aaqil Rifai
- School of Biomedical Engineering, University of Technology Sydney Ultimo, NSW 2007, Australia
| | - Nina Recek
- Jozef Stefan Institute, Department of Surface Engineering, Jamova cesta 39, 1000 Ljubljana, Slovenia
| | - David Schuessler
- Product Development, Allergan Aesthetics, 2525 Dupont Drive, Irvine, CA 92612, United States
| | - Igor Levchenko
- Plasma Sources and Application Centre, NIE, Nanyang Technological University, Singapore 637616, Singapore
| | - Adrian Murdock
- Fortescue Future Industries, East Perth, WA 6004, Australia
- CSIRO Manufacturing, 36 Bradfield Road, Lindfield, NSW 2070, Australia
| | - Miran Mozetič
- Jozef Stefan Institute, Department of Surface Engineering, Jamova cesta 39, 1000 Ljubljana, Slovenia
| | - Kate Fox
- School of Engineering, RMIT University, Melbourne, VIC 3000, Australia
| | - Katia Alexander
- School of Engineering, College of Engineering, Computing and Cybernetics, The Australian National University, Canberra, ACT 2600, Australia
- College of Science and Engineering, James Cook University, Townsville 4811, Australia
| |
Collapse
|
3
|
Jacobs TW, Dillon JT, Cohen DJ, Boyan BD, Schwartz Z. Different Methods to Modify the Hydrophilicity of Titanium Implants with Biomimetic Surface Topography to Induce Variable Responses in Bone Marrow Stromal Cells. Biomimetics (Basel) 2024; 9:227. [PMID: 38667238 PMCID: PMC11048143 DOI: 10.3390/biomimetics9040227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Revised: 03/28/2024] [Accepted: 04/08/2024] [Indexed: 04/28/2024] Open
Abstract
The osteoblastic differentiation of bone marrow stromal cells (bMSCs), critical to the osseointegration of titanium implants, is enhanced on titanium surfaces with biomimetic topography, and this is further enhanced when the surfaces are hydrophilic. This is a result of changing the surface free energy to change protein adsorption, improving cell attachment and differentiation, and improving bone-to-implant contact in patients. In this study, we examined different methods of plasma treatment, a well-accepted method of increasing hydrophilicity, and evaluated changes in surface properties as well as the response of bMSCs in vitro. Commercially pure Ti and titanium-aluminum-vanadium (Ti6Al4V) disks were sand-blasted and acid-etched to impart microscale and nanoscale roughness, followed by treatment with various post-processing surface modification methods, including ultraviolet light (UV), dielectric barrier discharge (DBD)-generated plasma, and plasma treatment under an argon or oxygen atmosphere. Surface wettability was based on a sessile water drop measurement of contact angle; the elemental composition was analyzed using XPS, and changes in topography were characterized using scanning electron microscopy (SEM) and confocal imaging. The cell response was evaluated using bMSCs; outcome measures included the production of osteogenic markers, paracrine signaling factors, and immunomodulatory cytokines. All plasma treatments were effective in inducing superhydrophilic surfaces. Small but significant increases in surface roughness were observed following UV, DBD and argon plasma treatment. No other modifications to surface topography were noted. However, the relative composition of Ti, O, and C varied with the treatment method. The cell response to these hydrophilic surfaces depended on the plasma treatment method used. DBD plasma treatment significantly enhanced the osteogenic response of the bMSCs. In contrast, the bMSC response to argon plasma-treated surfaces was varied, with an increase in OPG production but a decrease in OCN production. These results indicate that post-packaging methods that increased hydrophilicity as measured by contact angle did not change the surface free energy in the same way, and accordingly, cells responded differently. Wettability and surface chemistry alone are not enough to declare whether an implant has an improved osteogenic effect and do not fully explain how surface free energy affects cell response.
Collapse
Affiliation(s)
- Thomas W. Jacobs
- Department of Pharmaceutics, Virginia Commonwealth University, Richmond, VA 23298, USA;
| | - Jonathan T. Dillon
- Department of Biomedical Engineering, College of Engineering, Virginia Commonwealth University, 601 West Main Street, Richmond, VA 23284, USA; (J.T.D.); (D.J.C.); (B.D.B.)
| | - David J. Cohen
- Department of Biomedical Engineering, College of Engineering, Virginia Commonwealth University, 601 West Main Street, Richmond, VA 23284, USA; (J.T.D.); (D.J.C.); (B.D.B.)
| | - Barbara D. Boyan
- Department of Biomedical Engineering, College of Engineering, Virginia Commonwealth University, 601 West Main Street, Richmond, VA 23284, USA; (J.T.D.); (D.J.C.); (B.D.B.)
- Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
| | - Zvi Schwartz
- Department of Biomedical Engineering, College of Engineering, Virginia Commonwealth University, 601 West Main Street, Richmond, VA 23284, USA; (J.T.D.); (D.J.C.); (B.D.B.)
- Department of Periodontics, The University of Texas Health Science Center at San Antonio, San Antonio, TX 78229, USA
| |
Collapse
|
4
|
Serino G, Distefano F, Zanetti EM, Pascoletti G, Epasto G. Multiscale Mechanical Characterization of Polyether-2-ketone (PEKK) for Biomedical Application. Bioengineering (Basel) 2024; 11:244. [PMID: 38534517 DOI: 10.3390/bioengineering11030244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2023] [Revised: 02/01/2024] [Accepted: 02/23/2024] [Indexed: 03/28/2024] Open
Abstract
Polyether-ether-2-ketone (PEKK) is a high-performance thermoplastic polymer used in various fields, from aerospace to medical applications, due to its exceptional mechanical and thermal properties. Nonetheless, the mechanical behavior of 3D-printed PEKK still deserves to be more thoroughly investigated, especially in view of its production by 3D printing, where mechanical properties measured at different scales are likely to be correlated to one another and to all play a major role in determining biomechanical properties, which include mechanical strength on one side and osteointegration ability on the other side. This work explores the mechanical behavior of 3D-printed PEKK through a multiscale approach, having performed both nanoindentation tests and standard tensile and compression tests, where a detailed view of strain distribution was achieved through Digital Image Correlation (DIC) techniques. Furthermore, for specimens tested up to failure, their fractured surfaces were analyzed through Scanning Electron Microscopy (SEM) to clearly outline fracture modes. Additionally, the internal structure of 3D-printed PEKK was explored through Computed Tomography (CT) imaging, providing a three-dimensional view of the internal structure and the presence of voids and other imperfections. Finally, surface morphology was analyzed through confocal microscopy. The multiscale approach adopted in the present work offers information about the global and local behavior of the PEKK, also assessing its material properties down to the nanoscale. Due to its novelty as a polymeric material, no previous studies have approached a multiscale analysis of 3D-printed PEKK. The findings of this study contribute to a comprehensive understanding of 3D-printed PEKK along with criteria for process optimization in order to customize its properties to meet specific application requirements. This research not only advances the knowledge of PEKK as a 3D-printing material but also provides insights into the multifaceted nature of multiscale material characterization.
Collapse
Affiliation(s)
- Gianpaolo Serino
- Department of Mechanical and Aerospace Engineering (DIMEAS), Politecnico di Torino, 10129 Turin, Italy
- PolitoBIOMed Laboratory, Politecnico di Torino, 10129 Torino, Italy
| | - Fabio Distefano
- Department of Engineering, University of Messina, Contrada Di Dio, 98166 Messina, Italy
| | | | - Giulia Pascoletti
- Department of Engineering, University of Perugia, 06125 Perugia, Italy
| | - Gabriella Epasto
- Department of Engineering, University of Messina, Contrada Di Dio, 98166 Messina, Italy
| |
Collapse
|
5
|
Khomutova UV, Korzhova AG, Bryuzgina AA, Laput OA, Vasenina IV, Akhmadeev YH, Shugurov VV, Azhazha II, Shapovalova YG, Chernyavskii AV, Kurzina IA. Nitrogen Plasma Treatment of Composite Materials Based on Polylactic Acid and Hydroxyapatite. Polymers (Basel) 2024; 16:627. [PMID: 38475310 DOI: 10.3390/polym16050627] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 02/13/2024] [Accepted: 02/22/2024] [Indexed: 03/14/2024] Open
Abstract
The effect of surface modification by an arc discharge plasma in a nitrogen flow with treatment durations of 5 and 10 min on the physicochemical properties and biocompatibility of the surface of composites based on polylactic acid and hydroxyapatite (PLA/HA) with different mass ratios (80/20, 70/30, 60/40) has been investigated. The aim of this work was to show the correlation between the changes of the physicochemical characteristics (chemical compound, morphology, wettability) of the surface layer of the PLA/HA composites and the cell viability (macrophages) in the presence of the plasma-modified materials. The dependence of alterations of the functional properties (wettability, biocompatibility) on the change in the chemical composition under the plasma exposure has been established. The chemical composition was studied using X-ray photoelectron spectroscopy (XPS), the surface morphology was researched with scanning electron microscopy (SEM), and the wettability of the composite's surface was analyzed by measuring the contact angle and surface energy calculation. In addition, the viability of macrophages was investigated when the macrophages from three donors interacted with a modified PLA/HA surface. It was found that the formation of the new functional groups, -C-N and N-C=O/C=O, improves the wettability of the surface of the composites and promotes the viability of macrophages in the presence of the composite materials. The fundamental principles for obtaining promising materials with the required properties for eliminating bone defects have been created.
Collapse
Affiliation(s)
- Ulyana V Khomutova
- Chemical Department, National Research Tomsk State University, 36 Lenin Ave., Tomsk 634050, Russia
| | - Alena G Korzhova
- Chemical Department, National Research Tomsk State University, 36 Lenin Ave., Tomsk 634050, Russia
| | - Anastasia A Bryuzgina
- Chemical Department, National Research Tomsk State University, 36 Lenin Ave., Tomsk 634050, Russia
| | - Olesya A Laput
- Chemical Department, National Research Tomsk State University, 36 Lenin Ave., Tomsk 634050, Russia
| | - Irina V Vasenina
- P.N. Lebedev Physical Institute, 53 Leninsky Prospekt, Moscow 119333, Russia
| | - Yuriy H Akhmadeev
- Institute of High Current Electronics, 2/3 Akademichesky Ave., Tomsk 634055, Russia
| | - Vladimir V Shugurov
- Institute of High Current Electronics, 2/3 Akademichesky Ave., Tomsk 634055, Russia
| | - Ivan I Azhazha
- Institute of High Current Electronics, 2/3 Akademichesky Ave., Tomsk 634055, Russia
| | - Yelena G Shapovalova
- Chemical Department, National Research Tomsk State University, 36 Lenin Ave., Tomsk 634050, Russia
| | - Aleksandr V Chernyavskii
- Nanocenter MIREA, MIREA-Russian Technological University, 78 Vernadskogo Ave., Moscow 119454, Russia
| | - Irina A Kurzina
- Chemical Department, National Research Tomsk State University, 36 Lenin Ave., Tomsk 634050, Russia
| |
Collapse
|
6
|
Drożdż K, Gołda-Cępa M, Chytrosz-Wróbel P, Kotarba A, Brzychczy-Włoch M. Improving Biocompatibility of Polyurethanes Apply in Medicine Using Oxygen Plasma and Its Negative Effect on Increased Bacterial Adhesion. Int J Biomater 2024; 2024:5102603. [PMID: 38434098 PMCID: PMC10907100 DOI: 10.1155/2024/5102603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 02/09/2024] [Accepted: 02/12/2024] [Indexed: 03/05/2024] Open
Abstract
Polyurethanes (PUs) are versatile polymers used in medical applications due to their high flexibility and fatigue resistance. PUs are widely used for synthetic blood vessels, wound dressings, cannulas, and urinary and cardiovascular catheters. Many scientific reports indicate that surface wettability is crucial for biocompatibility and bacterial adhesion. The use of oxygen plasma to modify PUs is advantageous because of its effectiveness in introducing oxygen-containing functional groups, thereby altering surface wettability. The purpose of this study was to investigate the effect of the modification of the oxygen plasma of polyurethane on its biocompatibility with lung tissue (A549 cell line) and the adhesion of Gram-positive bacteria (S. aureus and S. epidermidis). The results showed that the modification of polyurethane by oxygen plasma allowed the introduction of functional groups containing oxygen (-OH and -COOH), which significantly increased its hydrophilicity (change from 105° ± 2° to 9° ± 2°) of PUs. Surface analysis by atomic force microscopy (AFM) showed changes in PU topography (change in maximum height from ∼110.3 nm to ∼32.1 nm). Moreover, biocompatibility studies on A549 cells showed that on the PU-modified surface, the cells exhibited altered morphology (increases in cell surface area and length, and thus reduced circularity) without concomitant effects on cell viability. However, serial dilution and plate count and microscopic methods confirmed that plasma modification significantly increased the adhesion of S. aureus and S. epidermidis bacteria. This study indicate the important role of surface hydrophilicity in biocompatibility and bacterial adhesion, which is important in the design of new medical biomaterials.
Collapse
Affiliation(s)
- Kamil Drożdż
- Department of Molecular Medical Microbiology, Chair of Microbiology, Faculty of Medicine, Jagiellonian University Medical College, Krakow 31-121, Poland
| | - Monika Gołda-Cępa
- Faculty of Chemistry, Jagiellonian University, Krakow 31-007, Poland
| | | | - Andrzej Kotarba
- Faculty of Chemistry, Jagiellonian University, Krakow 31-007, Poland
| | - Monika Brzychczy-Włoch
- Department of Molecular Medical Microbiology, Chair of Microbiology, Faculty of Medicine, Jagiellonian University Medical College, Krakow 31-121, Poland
| |
Collapse
|
7
|
Abdelrasoul A, Zhu N, Shoker A. Investigation on Human Serum Protein Depositions Inside Polyvinylidene Fluoride-Based Dialysis Membrane Layers Using Synchrotron Radiation Micro-Computed Tomography (SR-μCT). MEMBRANES 2023; 13:117. [PMID: 36676924 PMCID: PMC9864633 DOI: 10.3390/membranes13010117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2022] [Revised: 12/29/2022] [Accepted: 01/01/2023] [Indexed: 06/17/2023]
Abstract
Hemodialysis (HD) membrane fouling with human serum proteins is a highly undesirable process that results in blood activations with further severe consequences for HD patients. Polyvinylidene fluoride (PVDF) membranes possess a great extent of protein adsorption due to hydrophobic interaction between the membrane surface and non-polar regions of proteins. In this study, a PVDF membrane was modified with a zwitterionic (ZW) polymeric structure based on a poly (maleic anhydride-alt-1-decene), 3-(dimethylamino)-1-propylamine derivative and 1,3-propanesultone. Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), and zeta potential analyses were used to determine the membrane's characteristics. Membrane fouling with human serum proteins (human serum albumin (HSA), fibrinogen (FB), and transferrin (TRF)) was investigated with synchrotron radiation micro-computed tomography (SR-μCT), which allowed us to trace the protein location layer by layer inside the membrane. Both membranes (PVDF and modified PVDF) were detected to possess the preferred FB adsorption due to the Vroman effect, resulting in an increase in FB content in the adsorbed protein compared to FB content in the protein mixture solution. Moreover, FB was shown to only replace HSA, and no significant role of TRF in the Vroman effect was detected; i.e., TRF content was nearly the same both in the adsorbed protein layer and in the protein mixture solution. Surface modification of the PVDF membrane resulted in increased FB adsorption from both the protein mixture and the FB single solution, which is supposed to be due to the presence of an uncompensated negative charge that is located at the COOH group in the ZW polymer.
Collapse
Affiliation(s)
- Amira Abdelrasoul
- Department of Chemical and Biological Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK S7N 5A9, Canada
- Division of Biomedical Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, SK S7N 5A9, Canada
| | - Ning Zhu
- Canadian Light Source, 44 Innovation Blvd, Saskatoon, SK S7N 2V3, Canada
| | - Ahmed Shoker
- Nephrology Division, College of Medicine, University of Saskatchewan, 107 Wiggins Rd, Saskatoon, SK S7N 5E5, Canada
- Saskatchewan Transplant Program, St. Paul’s Hospital, 1702 20th Street West, Saskatoon, SK S7M 0Z9, Canada
| |
Collapse
|
8
|
Szafran K, Jurak M, Mroczka R, Wiącek AE. Surface Properties of the Polyethylene Terephthalate (PET) Substrate Modified with the Phospholipid-Polypeptide-Antioxidant Films: Design of Functional Biocoatings. Pharmaceutics 2022; 14:2815. [PMID: 36559307 PMCID: PMC9780983 DOI: 10.3390/pharmaceutics14122815] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 11/27/2022] [Accepted: 12/08/2022] [Indexed: 12/23/2022] Open
Abstract
Surface properties of polyethylene terephthalate (PET) coated with the ternary monolayers of the phospholipid 1,2-dioleoyl-sn-glycero-3-phosphocholine (DOPC), the immunosuppressant cyclosporine A (CsA), and the antioxidant lauryl gallate (LG) were examined. The films were deposited, by means of the Langmuir-Blodgett (LB) technique, on activated by air low temperature plasma PET plates (PETair). Their topography and surface chemistry were determined with the help of atomic force microscopy (AFM) and time-of-flight secondary ion mass spectrometry (TOF-SIMS), respectively, while wettability was evaluated by the contact angle measurements. Then, the surface free energy and its components were calculated from the Lifshitz-van der Waals/Acid-Base (LWAB) approach. The AFM imaging showed that the Langmuir monolayers were transferred effectively and yielded smoothing of the PETair surface. Mass spectrometry confirmed compatibility of the quantitative and qualitative compositions of the monolayers before and after the transfer onto the substrate. Moreover, the molecular arrangement in the LB films and possible mechanisms of DOPC-CsA-LG interactions were determined. The wettability studies provided information on the type and magnitude of the interactions that can occur between the biocoatings and the liquids imitating different environments. It was found that the changes from open to closed conformation of CsA molecules are driven by the hydrophobic environment ensured by the surrounding DOPC and LG molecules. This process is of significance to drug delivery where the CsA molecules can be released directly from the biomaterial surface by passive diffusion. The obtained results showed that the chosen techniques are complementary for the characterization of the molecular organization of multicomponent LB films at the polymer substrate as well as for designing biocompatible coatings with precisely defined wettability.
Collapse
Affiliation(s)
- Klaudia Szafran
- Department of Interfacial Phenomena, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Skłodowska University, 20-031 Lublin, Poland
| | - Małgorzata Jurak
- Department of Interfacial Phenomena, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Skłodowska University, 20-031 Lublin, Poland
| | - Robert Mroczka
- Laboratory of X-ray Optics, Department of Chemistry, Institute of Biological Sciences, Faculty of Medicine, The John Paul II Catholic University of Lublin, 20-708 Lublin, Poland
| | - Agnieszka Ewa Wiącek
- Department of Interfacial Phenomena, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Skłodowska University, 20-031 Lublin, Poland
| |
Collapse
|
9
|
Sishi Z, Bahig J, Kalugin D, Shoker A, Zhu N, Abdelrasoul A. Influence of Clinical Hemodialysis Membrane Morphology and Chemistry on Protein Adsorption and Inflammatory Biomarkers Released: In-Situ Synchrotron Imaging, Clinical and Computational Studies. BIOMEDICAL ENGINEERING ADVANCES 2022. [DOI: 10.1016/j.bea.2022.100070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
|
10
|
Shaw P, Vanraes P, Kumar N, Bogaerts A. Possible Synergies of Nanomaterial-Assisted Tissue Regeneration in Plasma Medicine: Mechanisms and Safety Concerns. NANOMATERIALS (BASEL, SWITZERLAND) 2022; 12:3397. [PMID: 36234523 PMCID: PMC9565759 DOI: 10.3390/nano12193397] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/05/2022] [Accepted: 09/06/2022] [Indexed: 06/16/2023]
Abstract
Cold atmospheric plasma and nanomedicine originally emerged as individual domains, but are increasingly applied in combination with each other. Most research is performed in the context of cancer treatment, with only little focus yet on the possible synergies. Many questions remain on the potential of this promising hybrid technology, particularly regarding regenerative medicine and tissue engineering. In this perspective article, we therefore start from the fundamental mechanisms in the individual technologies, in order to envision possible synergies for wound healing and tissue recovery, as well as research strategies to discover and optimize them. Among these strategies, we demonstrate how cold plasmas and nanomaterials can enhance each other's strengths and overcome each other's limitations. The parallels with cancer research, biotechnology and plasma surface modification further serve as inspiration for the envisioned synergies in tissue regeneration. The discovery and optimization of synergies may also be realized based on a profound understanding of the underlying redox- and field-related biological processes. Finally, we emphasize the toxicity concerns in plasma and nanomedicine, which may be partly remediated by their combination, but also partly amplified. A widespread use of standardized protocols and materials is therefore strongly recommended, to ensure both a fast and safe clinical implementation.
Collapse
Affiliation(s)
- Priyanka Shaw
- Research Group PLASMANT, Department of Chemistry, University of Antwerp, 2610 Antwerp, Belgium
| | - Patrick Vanraes
- Research Group PLASMANT, Department of Chemistry, University of Antwerp, 2610 Antwerp, Belgium
| | - Naresh Kumar
- Department of Medical Devices, National Institute of Pharmaceutical Education and Research, Guwahati 781125, Assam, India
| | - Annemie Bogaerts
- Research Group PLASMANT, Department of Chemistry, University of Antwerp, 2610 Antwerp, Belgium
| |
Collapse
|
11
|
Jurak M, Szafran K, Cea P, Martín S. Characteristics of Phospholipid-Immunosuppressant-Antioxidant Mixed Langmuir-Blodgett Films. J Phys Chem B 2022; 126:6936-6947. [PMID: 36066119 PMCID: PMC9483916 DOI: 10.1021/acs.jpcb.2c03300] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Hemocompatibility is one of the major criteria for the successful cardiovascular applicability of novel biomaterials. In this context, monolayers of certain biomolecules can be used to improve surface biocompatibility. To this end, biocoatings incorporating a phospholipid (1,2-dioleoyl-sn-glycero-3-phosphocholine, DOPC), an immunosuppressant (cyclosporine A, CsA), and an antioxidant material (lauryl gallate, LG) were fabricated by depositing Langmuir films onto gold or mica substrates using the Langmuir-Blodgett (LB) technique. These LB monolayers were thoroughly characterized by means of quartz crystal microbalance (QCM), atomic force microscopy (AFM), cyclic voltammetry (CV), and contact angle (CA) measurements. The obtained results indicate that the properties of these LB films are modulated by the monolayer composition. The presence of LG in the three-component systems (DOPC-CsA-LG) increases the molecular packing and the surface coverage of the substrate, which affects the wettability of the biocoating. From the different compositions studied here, we conclude that DOPC-CsA-LG monolayers with a DOPC/CsA ratio of 1:1 and LG molar fractions of 0.50 and 0.75 exhibit improved surface biocompatible characteristics. These results open up new perspectives on our knowledge and better understanding of phenomena at the biomaterial/host interface.
Collapse
Affiliation(s)
- Małgorzata Jurak
- Department of Interfacial Phenomena, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Skłodowska University, 20031 Lublin, Poland
| | - Klaudia Szafran
- Department of Interfacial Phenomena, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Skłodowska University, 20031 Lublin, Poland
| | - Pilar Cea
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain.,Departamento de Química Física, Facultad de Ciencias, Universidad de Zaragoza, 50009 Zaragoza, Spain.,Laboratorio de Microscopias Avanzadas, LMA, C/Mariano Esquilor s/n, 50018 Zaragoza, Spain
| | - Santiago Martín
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain.,Departamento de Química Física, Facultad de Ciencias, Universidad de Zaragoza, 50009 Zaragoza, Spain.,Laboratorio de Microscopias Avanzadas, LMA, C/Mariano Esquilor s/n, 50018 Zaragoza, Spain
| |
Collapse
|
12
|
Nanocoating of CsgA protein for enhanced cell adhesion and proliferation. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.08.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
|
13
|
Xie C, Sun B, Liu R, Qu K, Zhang W, Weng Z, Wang Z. Facile fabrication of micropattern surfaces with controlled wettability on PDMS-modified fiber membranes for cell patterning. ANALYTICAL METHODS : ADVANCING METHODS AND APPLICATIONS 2022; 14:1820-1826. [PMID: 35481818 DOI: 10.1039/d2ay00209d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Various cell culture substrates have been developed for cell patterning to control cell distributions and orientations in tissue engineering, drug screening and regenerative medicine. In this study, a preparation method of modified fiber membranes was applied in the field of cell patterning, and the obtained fiber membranes guided the cell distributions and orientations flexibly. The aligned electrospinning fiber membranes were dip-coated with polydimethylsiloxane (PDMS) to improve the stability of wettability, and then it was treated with oxygen plasma with a photomask to obtain a hydrophilic-hydrophobic surface micropattern. The morphologies, wettabilities and chemical structures of the membranes were analyzed by using a scanning electron microscope (SEM), drop shape analysis instrument, energy dispersive spectrometer (EDS) and Fourier transform infrared (FTIR) spectrometer. The L929 cells were cultured on the obtained membranes to observe the controlled cell distributions and orientations by using a SEM and fluorescence microscope. The results indicate that the treated membranes have the ability to control both cell distributions and orientations simultaneously. This method offers a novel approach to develop cell culture substrates for cell patterning in tissue engineering.
Collapse
Affiliation(s)
- Chenchen Xie
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China.
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China
| | - Baishun Sun
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China.
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China
| | - Ri Liu
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China.
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China
- Zhongshan Institute, Changchun University of Science and Technology, Zhongshan 528437, China
| | - Kaige Qu
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China.
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China
| | - Wenxiao Zhang
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China.
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China
| | - Zhankun Weng
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China.
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China
- Zhongshan Institute, Changchun University of Science and Technology, Zhongshan 528437, China
| | - Zuobin Wang
- International Research Centre for Nano Handling and Manufacturing of China, Changchun University of Science and Technology, Changchun 130022, China.
- Ministry of Education Key Laboratory for Cross-Scale Micro and Nano Manufacturing, Changchun University of Science and Technology, Changchun 130022, China
- Zhongshan Institute, Changchun University of Science and Technology, Zhongshan 528437, China
- JR3CN, IRAC, University of Bedfordshire, Luton LU1 3JU, UK
| |
Collapse
|
14
|
Westphalen H, Kalugin D, Abdelrasoul A. Structure, function, and adsorption of highly abundant blood proteins and its critical influence on hemodialysis patients: A critical review. BIOMEDICAL ENGINEERING ADVANCES 2021. [DOI: 10.1016/j.bea.2021.100021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
|
15
|
Jurak M, Wiącek AE, Ładniak A, Przykaza K, Szafran K. What affects the biocompatibility of polymers? Adv Colloid Interface Sci 2021; 294:102451. [PMID: 34098385 DOI: 10.1016/j.cis.2021.102451] [Citation(s) in RCA: 62] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2021] [Revised: 05/21/2021] [Accepted: 05/22/2021] [Indexed: 02/07/2023]
Abstract
In recent decades synthetic polymers have gained increasing popularity, and nowadays they are an integral part of people's daily lives. In addition, owing to their competitive advantage and being susceptible to modification, polymers have stimulated the fast development of innovative technologies in many areas of science. Biopolymers are of particular interest in various branches of medicine, such as implantology of bones, cartilage and skin tissues as well as blood vessels. Biomaterials with such specific applications must have appropriate mechanical and strength characteristics and above all they must be compatible with the surrounding tissues, human blood and its components, i.e. exhibit high hemo- and biocompatibility, low or no thrombo- and carcinogenicity, foreign body response (host response), appropriate osteoconduction, osteoinduction and mineralization. For biocompatibility improvement many surface treatment techniques have been utilized leading to fabricate the polymer biomaterials of required properties, also at nanoscale. This review paper discusses the most important physicochemical and biological factors that affect the biocompatibility, thus the reaction of the living organism after insertion of the polymer-based biomaterials, i.e. surface modification and/or degradation, surface composition (functional groups and charge), size and shapes, hydrophilic-hydrophobic character, wettability and surface free energy, topography (roughness, stiffness), crystalline and amorphous structure, nanostructure, cell adhesion and proliferation, cellular uptake. Particularly, the application of polysaccharides (chitosan, cellulose, starch) in the tissue engineering is emphasized.
Collapse
|
16
|
Hutterer J, Proll G, Fechner P, Gauglitz G. Parallelized label-free monitoring of cell adhesion on extracellular matrix proteins measured by single colour reflectometry. Anal Bioanal Chem 2021; 414:575-585. [PMID: 34272591 PMCID: PMC8748377 DOI: 10.1007/s00216-021-03522-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 06/25/2021] [Accepted: 06/30/2021] [Indexed: 11/26/2022]
Abstract
The understanding of the initial cell adhesion to biomaterials is crucial for the survival of implants. The manifold possibilities to tailor an implant surface and the diverse requirements for different implant applications necessitate a timesaving and highly parallelized analytical methodology. Due to its intrinsic advantages (label-free, time-resolved, robust against temperature fluctuations, and particularly the multiplexing possibilities), single colour reflectometry (SCORE) is used for the first time to investigate cell adhesion to different extracellular matrix protein-coated surfaces. The excellent correlation between the novel SCORE technology and well-established reference methods proves that the results obtained by using this direct optical method are able to reflect the cell binding processes at the transducer surface. Additionally, the high time resolution of SCORE revealed the differences in the adhesion behaviour of the cells on the different extracellular matrix protein-coated glass slides during the initial adsorption phase and during the spreading of the cells on the surfaces. Therefore, we conclude that SCORE is a perfectly suited methodology for studying the entire cell adsorption process, including morphological changes, and shows great potential for other cell-based sensing applications.
Collapse
Affiliation(s)
- Johanna Hutterer
- Institute of Physical and Theoretical Chemistry (IPTC), Eberhard Karls University Tuebingen, Auf der Morgenstelle 18, 72076, Tuebingen, Germany.
| | - Günther Proll
- Institute of Physical and Theoretical Chemistry (IPTC), Eberhard Karls University Tuebingen, Auf der Morgenstelle 18, 72076, Tuebingen, Germany
- BioCopy GmbH, Elzstrasse 27, 79312, Emmendingen, Germany
| | - Peter Fechner
- Institute of Physical and Theoretical Chemistry (IPTC), Eberhard Karls University Tuebingen, Auf der Morgenstelle 18, 72076, Tuebingen, Germany
- BioCopy GmbH, Elzstrasse 27, 79312, Emmendingen, Germany
| | - Günter Gauglitz
- Institute of Physical and Theoretical Chemistry (IPTC), Eberhard Karls University Tuebingen, Auf der Morgenstelle 18, 72076, Tuebingen, Germany
| |
Collapse
|
17
|
Strohbach A, Maess F, Wulf K, Petersen S, Grabow N, Schmitz KP, Felix SB, Busch R. The Role of Biodegradable Poly-(L-lactide)-Based Polymers in Blood Cell Activation and Platelet-Monocyte Interaction. Int J Mol Sci 2021; 22:ijms22126340. [PMID: 34199303 PMCID: PMC8231768 DOI: 10.3390/ijms22126340] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2021] [Revised: 05/26/2021] [Accepted: 06/07/2021] [Indexed: 01/23/2023] Open
Abstract
The main purpose of new stent technologies is to overcome unfavorable material-related incompatibilities by producing bio- and hemo-compatible polymers with anti-inflammatory and anti-thrombogenic properties. In this context, wettability is an important surface property, which has a major impact on the biological response of blood cells. However, the influence of local hemodynamic changes also influences blood cell activation. Therefore, we investigated biodegradable polymers with different wettability to identify possible aspects for a better prediction of blood compatibility. We applied shear rates of 100 s−1 and 1500 s−1 and assessed platelet and monocyte activation as well as the formation of CD62P+ monocyte-bound platelets via flow cytometry. Aggregation of circulating platelets induced by collagen was assessed by light transmission aggregometry. Via live cell imaging, leukocytes were tracked on biomaterial surfaces to assess their average velocity. Monocyte adhesion on biomaterials was determined by fluorescence microscopy. In response to low shear rates of 100 s−1, activation of circulating platelets and monocytes as well as the formation of CD62P+ monocyte-bound platelets corresponded to the wettability of the underlying material with the most favorable conditions on more hydrophilic surfaces. Under high shear rates, however, blood compatibility cannot only be predicted by the concept of wettability. We assume that the mechanisms of blood cell-polymer interactions do not allow for a rule-of-thumb prediction of the blood compatibility of a material, which makes extensive in vitro testing mandatory.
Collapse
Affiliation(s)
- Anne Strohbach
- Department of Internal Medicine B Cardiology, University Medicine Greifswald, Ferdinand-Sauerbruch-Str., 17475 Greifswald, Germany; (F.M.); (S.B.F.); (R.B.)
- DZHK (German Centre for Cardiovascular Research), Partner Site Greifswald, Fleischmannstr. 42-44, 17489 Greifswald, Germany
- Correspondence:
| | - Friedemann Maess
- Department of Internal Medicine B Cardiology, University Medicine Greifswald, Ferdinand-Sauerbruch-Str., 17475 Greifswald, Germany; (F.M.); (S.B.F.); (R.B.)
| | - Katharina Wulf
- Institute for Biomedical Engineering, Rostock University Medical Center, Friedrich-Barnewitz-Str. 4, 18119 Rostock, Germany; (K.W.); (S.P.); (N.G.); (K.-P.S.)
| | - Svea Petersen
- Institute for Biomedical Engineering, Rostock University Medical Center, Friedrich-Barnewitz-Str. 4, 18119 Rostock, Germany; (K.W.); (S.P.); (N.G.); (K.-P.S.)
- Faculty of Engineering and Computer Science, University of Applied Sciences, Albrechtstr. 30, 49076 Osnabrück, Germany
| | - Niels Grabow
- Institute for Biomedical Engineering, Rostock University Medical Center, Friedrich-Barnewitz-Str. 4, 18119 Rostock, Germany; (K.W.); (S.P.); (N.G.); (K.-P.S.)
| | - Klaus-Peter Schmitz
- Institute for Biomedical Engineering, Rostock University Medical Center, Friedrich-Barnewitz-Str. 4, 18119 Rostock, Germany; (K.W.); (S.P.); (N.G.); (K.-P.S.)
| | - Stephan B. Felix
- Department of Internal Medicine B Cardiology, University Medicine Greifswald, Ferdinand-Sauerbruch-Str., 17475 Greifswald, Germany; (F.M.); (S.B.F.); (R.B.)
- DZHK (German Centre for Cardiovascular Research), Partner Site Greifswald, Fleischmannstr. 42-44, 17489 Greifswald, Germany
| | - Raila Busch
- Department of Internal Medicine B Cardiology, University Medicine Greifswald, Ferdinand-Sauerbruch-Str., 17475 Greifswald, Germany; (F.M.); (S.B.F.); (R.B.)
- DZHK (German Centre for Cardiovascular Research), Partner Site Greifswald, Fleischmannstr. 42-44, 17489 Greifswald, Germany
| |
Collapse
|
18
|
Berger MB, Bosh KB, Cohen DJ, Boyan BD, Schwartz Z. Benchtop plasma treatment of titanium surfaces enhances cell response. Dent Mater 2021; 37:690-700. [PMID: 33589272 PMCID: PMC7981249 DOI: 10.1016/j.dental.2021.01.026] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2020] [Accepted: 01/20/2021] [Indexed: 11/30/2022]
Abstract
OBJECTIVE Modifications to implant surface properties, including topography, chemistry, and wettability, alter immune response, osteoblast differentiation of bone marrow stromal cells (MSCs), and implant integration in vivo. Dielectric barrier discharge (DBD) plasma treatment has been used to sterilize surfaces and remove adsorbed carbon, improving wettability. However, unless it is used immediately prior to placement, ambient atmospheric hydrocarbons rapidly adhere to the surface, thereby reducing its hydrophilicity. Moreover, this method is not practical in many clinical settings. The aim of this study was to evaluate the effectiveness of an on-site benchtop modification technique for implants at time of placement, consisting of a DBD plasma that is used to sterilize implants that are pre-packaged in a vacuum. Effects of the plasma-treatment on implant surface properties and cellular response of MSCs and osteoblasts were assessed in vitro. METHODS Titanium-aluminum-vanadium implant surfaces were grit-blasted (GB) or grit-blasted and acid-etched (AE), and packaged under vacuum. AE surfaces were also plasma-treated using the benchtop device (GB + AE) and then removed from the vacuum. GB surface morphology was altered with AE but AE microroughness was not changed with the plasma-treatment. Plasma-treatment increased the surface wettability, but did not alter surface atomic concentrations of titanium, oxygen, or carbon. RESULTS MSCs and osteoblast-like cells (MG63 s) produced increased concentrations of osteocalcin, osteopontin, and osteoprotegerin after plasma-treatment of AE surfaces compared to non-plasma-treated AE surfaces; production of IL6 was reduced and IL10 was. Aging GB + AE surfaces for 7 days after plasma-treatment but still in the vacuum environment reduced the effectiveness of plasma on cellular response. SIGNIFICANCE Overall, these data suggest that application of benchtop plasma at the time of implant placement can alter the surface free energy of an implant surface without modifying surface chemical composition and enhance the differentiation and activity of MSCs and osteoblasts that are in contact with these implant surfaces.
Collapse
Affiliation(s)
- Michael B Berger
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA, USA.
| | - Kyla B Bosh
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA, USA.
| | - D Joshua Cohen
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA, USA.
| | - Barbara D Boyan
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA, USA; Wallace H. Coulter Department of Biomedical Engineering at Georgia Tech and Emory University, Georgia Institute of Technology, Atlanta, GA, USA.
| | - Zvi Schwartz
- Department of Biomedical Engineering, Virginia Commonwealth University, Richmond, VA, USA; Department of Periodontology, University of Texas Health Science Center at San Antonio, San Antonio, TX, USA.
| |
Collapse
|
19
|
Antonova OY, Kochetkova OY, Shlyapnikov YM. ECM-Mimetic Nylon Nanofiber Scaffolds for Neurite Growth Guidance. NANOMATERIALS (BASEL, SWITZERLAND) 2021; 11:516. [PMID: 33670540 PMCID: PMC7922859 DOI: 10.3390/nano11020516] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 02/13/2021] [Accepted: 02/15/2021] [Indexed: 12/19/2022]
Abstract
Numerous nanostructured synthetic scaffolds mimicking the architecture of the natural extracellular matrix (ECM) have been described, but the polymeric nanofibers comprising the scaffold were substantially thicker than the natural collagen nanofibers of neural ECM. Here, we report neuron growth on electrospun scaffolds of nylon-4,6 fibers with an average diameter of 60 nm, which closely matches the diameter of collagen nanofibers of neural ECM, and compare their properties with the scaffolds of thicker 300 nm nanofibers. Previously unmodified nylon was not regarded as an independent nanostructured matrix for guided growth of neural cells; however, it is particularly useful for ultrathin nanofiber production. We demonstrate that, while both types of fibers stimulate directed growth of neuronal processes, ultrathin fibers are more efficient in promoting and accelerating neurite elongation. Both types of scaffolds also improved synaptogenesis and the formation of connections between hippocampal neurons; however, the mechanisms of interaction of neurites with the scaffolds were substantially different. While ultrathin fibers formed numerous weak immature β1-integrin-positive focal contacts localized over the entire cell surface, scaffolds of submicron fibers formed β1-integrin focal adhesions only on the cell soma. This indicates that the scaffold nanotopology can influence focal adhesion assembly involving various integrin subunits. The fabricated nanostructured scaffolds demonstrated high stability and resistance to biodegradation, as well as absence of toxic compound release after 1 month of incubation with live cells in vitro. Our results demonstrate the high potential of this novel type of nanofibers for clinical application as substrates facilitating regeneration of nervous tissue.
Collapse
Affiliation(s)
- Olga Y. Antonova
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, 142290 Moscow, Russia; (O.Y.K.); (Y.M.S.)
| | | | | |
Collapse
|
20
|
Li P, Gao Z, Tan Z, Xiao J, Wei L, Chen Y. New developments in anti-biofilm intervention towards effective management of orthopedic device related infections (ODRI's). BIOFOULING 2021; 37:1-35. [PMID: 33618584 DOI: 10.1080/08927014.2020.1869725] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2020] [Revised: 12/15/2020] [Accepted: 12/20/2020] [Indexed: 06/12/2023]
Abstract
Orthopedic device related infections (ODRI's) represent a difficult to treat situation owing to their biofilm based nature. Biofilm infections once established are difficult to eradicate even with an aggressive treatment regimen due to their recalcitrance towards antibiotics and immune attack. The involvement of antibiotic resistant pathogens as the etiological agent further worsens the overall clinical picture, pressing on the need to look into alternative treatment strategies. The present review highlightes the microbiological challenges associated with treatment of ODRI's due to biofilm formation on the implant surface. Further, it details the newer anti-infective modalities that work either by preventing biofilm formation and/or through effective disruption of the mature biofilms formed on the medical implant. The study, therefore aims to provide a comprehensive insight into the newer anti-biofilm interventions (non-antibiotic approaches) and a better understanding of their mechanism of action essential for improved management of orthopedic implant infections.
Collapse
Affiliation(s)
- Ping Li
- Department of Orthopedics, Ya'an People's Hospital, Yaan City, China
| | - Zhenwu Gao
- Department of Orthopedics, Shanxi Bethune Hospital, Taiyuan City, China
| | - Zhenwei Tan
- Department of Orthopedics, Western Theater Air Force Hospital of PLA, Chengdu, China
| | - Jun Xiao
- Department of Orthopedics, Ya'an People's Hospital, Yaan City, China
| | - Li Wei
- Nursing Department, Three Gorges Hospital Affiliated to Chongqing University, Chongqing, China
| | - Yirui Chen
- Department of Orthopedics, Three Gorges Hospital Affiliated to Chongqing University, Chongqing, China
| |
Collapse
|
21
|
Zhu W, Nie X, Tao Q, Yao H, Wang DA. Interactions at engineered graft-tissue interfaces: A review. APL Bioeng 2020; 4:031502. [PMID: 32844138 PMCID: PMC7443169 DOI: 10.1063/5.0014519] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 07/27/2020] [Indexed: 02/06/2023] Open
Abstract
The interactions at the graft-tissue interfaces are critical for the results of engraftments post-implantation. To improve the success rate of the implantations, as well as the quality of the patients' life, understanding the possible reactions between artificial materials and the host tissues is helpful in designing new generations of material-based grafts aiming at inducing specific responses from surrounding tissues for their own reparation and regeneration. To help researchers understand the complicated interactions that occur after implantations and to promote the development of better-designed grafts with improved biocompatibility and patient responses, in this review, the topics will be discussed from the basic reactions that occur chronologically at the graft-tissue interfaces after implantations to the existing and potential applications of the mechanisms of such reactions in designing of grafts. It offers a chance to bring up-to-date advances in the field and new strategies of controlling the graft-tissue interfaces.
Collapse
Affiliation(s)
- Wenzhen Zhu
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457
| | - Xiaolei Nie
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, Singapore 637457
| | - Qi Tao
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225009, Jiangsu, People's Republic of China
| | - Hang Yao
- School of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou 225009, Jiangsu, People's Republic of China
| | - Dong-An Wang
- Authors to whom correspondence should be addressed: and
| |
Collapse
|
22
|
Fajstavr D, Neznalová K, Slepičková Kasálková N, Rimpelová S, Kubičíková K, Švorčík V, Slepička P. Nanostructured Polystyrene Doped with Acetylsalicylic Acid and Its Antibacterial Properties. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E3609. [PMID: 32824068 PMCID: PMC7475827 DOI: 10.3390/ma13163609] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 08/11/2020] [Accepted: 08/12/2020] [Indexed: 12/19/2022]
Abstract
Homogeneous polystyrene foils doped with different concentrations of acetylsalicylic acid were prepared by the solvent casting method. The surface morphology and surface chemistry of as-prepared foils were characterized in detail. Excimer laser (krypton fluoride, a wavelength of 248 nm) was used for surface nanopatterning of doped polystyrene foils. Certain combinations of laser fluence and number of laser pulses led to formation of laser-induced periodic surface structures (LIPSS) on the exposed surface. Formation of the pattern was affected by the presence of a dopant in the polystyrene structure. Significant differences in surface chemistry and morphology of laser-treated foils compared to both pristine and doped polystyrene were detected. The pattern width and height were both affected by selection of input excimer exposure conditions, and the amount of 6000 pulses was determined as optimal. The possibility of nanostructuring of a honeycomb-like pattern doped with acetylsalicylic acid was also demonstrated. Selected nanostructured surfaces were used for study the antibacterial properties for a model bacteria strain of S. aureus. The combination of altered surface chemistry and morphology of polystyrene was confirmed to have an excellent antibacterial properties.
Collapse
Affiliation(s)
- Dominik Fajstavr
- Department of Solid State Engineering, University of Chemistry and Technology Prague, 16628 Prague, Czech Republic; (D.F.); (K.N.); (N.S.K.); (K.K.); (V.Š.)
| | - Klára Neznalová
- Department of Solid State Engineering, University of Chemistry and Technology Prague, 16628 Prague, Czech Republic; (D.F.); (K.N.); (N.S.K.); (K.K.); (V.Š.)
| | - Nikola Slepičková Kasálková
- Department of Solid State Engineering, University of Chemistry and Technology Prague, 16628 Prague, Czech Republic; (D.F.); (K.N.); (N.S.K.); (K.K.); (V.Š.)
| | - Silvie Rimpelová
- Department of Biochemistry and Microbiology, University of Chemistry and Technology Prague, 16628 Prague, Czech Republic;
| | - Kateřina Kubičíková
- Department of Solid State Engineering, University of Chemistry and Technology Prague, 16628 Prague, Czech Republic; (D.F.); (K.N.); (N.S.K.); (K.K.); (V.Š.)
| | - Václav Švorčík
- Department of Solid State Engineering, University of Chemistry and Technology Prague, 16628 Prague, Czech Republic; (D.F.); (K.N.); (N.S.K.); (K.K.); (V.Š.)
| | - Petr Slepička
- Department of Solid State Engineering, University of Chemistry and Technology Prague, 16628 Prague, Czech Republic; (D.F.); (K.N.); (N.S.K.); (K.K.); (V.Š.)
| |
Collapse
|
23
|
Steinman NY, Domb AJ. Injectable Pasty Biodegradable Polyesters Derived from Castor Oil and Hydroxyl-Acid Lactones. J Pharmacol Exp Ther 2019; 370:736-741. [DOI: 10.1124/jpet.119.259077] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 05/14/2019] [Indexed: 12/17/2022] Open
|
24
|
Lin WC, Mohd Razali NA. Temporary Wettability Tuning of PCL/PDMS Micro Pattern Using the Plasma Treatments. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E644. [PMID: 30791678 PMCID: PMC6416562 DOI: 10.3390/ma12040644] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 02/01/2019] [Accepted: 02/16/2019] [Indexed: 11/17/2022]
Abstract
Surface wettability plays an important role in determining the function of a wound dressing. Dressings with hydrophobic surfaces are suitable for bacterial adsorption, however, a hydrophilic surface is needed to improve cell attachment for most anchorage-dependent cell types. Furthermore, the hydrophobicity/hydrophilicity of the surface can be used to direct cellular processes such as cell initial attachment, adhesion, and migration during wound healing. Thus, a surface with an ability to switch their surface wettability improves the practicality of the dressing. In this study, we propose a temporary surface wettability tuning for surface patterning utilizing plasma treatment. Polycaprolactone (PCL) and polydimethylsiloxane (PDMS) surfaces were treated with tetrafluoromethane (CF₄), sulphur hexafluoride (SF₆), and oxygen (O₂) plasma, and the effects on the surface wettability, roughness, and chemical composition were investigated. Based on the contact angle measurement, CF₄ plasma altered surface wettability of PCL and PDMS films to hydrophobic and hydrophilic, respectively. After CF₄ treatment, better attachment of primary mouse embryonic fibroblast cell (3T3) was observed on the treated PDMS surface. Embedding PCL into PDMS generated a hydrophobic-hydrophilic pattern mixture surface, which offers great potential in the tissue engineering field such as cell patterning and guidance.
Collapse
Affiliation(s)
- Wei-Chih Lin
- Department of Mechanical and Electro-mechanical Engineering, National Sun Yat-sen University, Kaohsiung 80424, Taiwan.
| | - Nur Adila Mohd Razali
- Department of Mechanical and Electro-mechanical Engineering, National Sun Yat-sen University, Kaohsiung 80424, Taiwan.
| |
Collapse
|
25
|
Mozetič M. Surface Modification to Improve Properties of Materials. MATERIALS (BASEL, SWITZERLAND) 2019; 12:E441. [PMID: 30709009 PMCID: PMC6384733 DOI: 10.3390/ma12030441] [Citation(s) in RCA: 52] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Accepted: 01/30/2019] [Indexed: 12/17/2022]
Abstract
Surface properties of modern materials are usually inadequate in terms of wettability, adhesion properties, biocompatibility etc., so they should be modified prior to application or any further processing such as coating with functional materials. Both the morphological properties and chemical structure/composition should be modified in order to obtain a desired surface finish. Various treatment procedures have been employed, and many are based on the application of non-equilibrium gaseous media, especially gaseous plasma. Although such treatments have been studied extensively in past decades and actually commercialized, the exact mechanisms of interaction between reactive gaseous species and solid materials is still inadequately understood. This special issue provides recent trends in nanostructuring and functionalization of solid materials with the goal of improving their functional properties.
Collapse
Affiliation(s)
- Miran Mozetič
- Department of Surface Engineering, Jozef Stefan Institute, Jamova cesta 39, 1000 Ljubljana, Slovenia.
| |
Collapse
|