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Pan Z, Dorogin J, Lofts A, Randhawa G, Xu F, Slick R, Abraha M, Tran C, Lawlor M, Hoare T. Injectable and Dynamically Crosslinked Zwitterionic Hydrogels for Anti-Fouling and Tissue Regeneration Applications. Adv Healthc Mater 2024; 13:e2304397. [PMID: 38684223 DOI: 10.1002/adhm.202304397] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 03/29/2024] [Indexed: 05/02/2024]
Abstract
A zwitterionic injectable and degradable hydrogel based on hydrazide and aldehyde-functionalized [2-(methacryloyloxy)ethyl] dimethyl-(3-sulfopropyl)ammonium hydroxide (DMAPS) precursor polymers that can address practical in vivo needs is reported. Zwitterion fusion interactions between the zwitterionic precursor polymers create a secondary physically crosslinked network to enable much more rapid gelation than previously reported with other synthetic polymers, facilitating rapid gelation at much lower polymer concentrations or degrees of functionalization than previously accessible in addition to promoting zero swelling and long-term degradation responses and significantly stiffer mechanics than are typically accessed with previously reported low-viscosity precursor gelation systems. The hydrogels maintain the highly anti-fouling properties of conventional zwitterionic hydrogels against proteins, mammalian cells, and bacteria while also promoting anti-fibrotic tissue responses in vivo. Furthermore, the use of the hydrogels for effective delivery and subsequent controlled release of viable cells with tunable profiles both in vitro and in vivo is demonstrated, including the delivery of myoblasts in a mouse skeletal muscle defect model for reducing the time between injury and functional mobility recovery. The combination of the injectability, degradability, and tissue compatibility achieved offers the potential to expand the utility of zwitterionic hydrogels in minimally invasive therapeutic applications.
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Affiliation(s)
- Zhicheng Pan
- Department of Polymer Materials and Engineering, School of Chemical Engineering and Technology, Hebei University of Technology, Tianjin, 300130, China
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S 4L8, Canada
| | - Jonathan Dorogin
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S 4L8, Canada
| | - Andrew Lofts
- Department of Biomedical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S 4L8, Canada
| | - Gurpreet Randhawa
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S 4L8, Canada
- Department of Biomedical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S 4L8, Canada
| | - Fei Xu
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S 4L8, Canada
| | - Rebecca Slick
- Department of Pathology and Laboratory Medicine and Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
| | - Mosana Abraha
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S 4L8, Canada
| | - Cecilia Tran
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S 4L8, Canada
| | - Michael Lawlor
- Department of Pathology and Laboratory Medicine and Neuroscience Research Center, Medical College of Wisconsin, Milwaukee, WI, 53226, USA
| | - Todd Hoare
- Department of Chemical Engineering, McMaster University, 1280 Main Street West, Hamilton, Ontario, L8S 4L8, Canada
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Havens A, El-Shaer E, Garcia L, Godino JL, Thompson RS. Protein Adsorption on Mixed Self-Assembled Monolayers: Influence of Chain Length and Terminal Group. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:16712-16720. [PMID: 37960859 DOI: 10.1021/acs.langmuir.3c01250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
Mixed self-assembled monolayers (SAMs) are often used as highly tunable substrates for biomedical and biosensing applications. It is well documented, however, that mixed SAMs can be highly disordered at the molecular level and do not pack as closely or homogeneously as single-component SAMs, particularly when the chain lengths and head groups of the SAM thiol components are significantly different. In this study, we explore the impact of SAM structure and mixing ratio (-OH and -CH3 termini) on the weak physisorption behavior of bovine serum albumin (BSA), which adsorbs more readily to hydrophobic, methyl-terminated SAMs. Our results suggest that once the mixture includes 50% or more of the methyl terminus, the mixing ratio alone is a relatively good predictor of adsorption, regardless of the relative chain lengths of the thiols used in the mixture. This trend persists at any mixing ratio for SAMs where methyl- and hydroxyl-terminated groups are the same length or where the hydroxyl-terminated thiol is longer. The only variance observed is at low mixing ratios (<50% methyl-terminated) for a mixed SAM where the methyl-terminated component has a longer chain length. Relative protein adsorption increases on these mixtures, perhaps due to the disordered exposure of the excess alkane backbone. Taken together, however, we do not find significant evidence that varying chain lengths for mixed SAMs prepared on polycrystalline substrates and analyzed in air have an outsized influence on nanoscopic adsorption behavior, despite molecular-level disorder in the SAM itself.
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Affiliation(s)
- Alyssa Havens
- Department of Chemistry, St. Edward's University, 3000 S. Congress Avenue, Austin, Texas 78704, United States
| | - Emily El-Shaer
- Department of Chemistry, St. Edward's University, 3000 S. Congress Avenue, Austin, Texas 78704, United States
| | - Liliana Garcia
- Department of Chemistry, St. Edward's University, 3000 S. Congress Avenue, Austin, Texas 78704, United States
| | - John Luke Godino
- Department of Chemistry, St. Edward's University, 3000 S. Congress Avenue, Austin, Texas 78704, United States
| | - Rebecca S Thompson
- Department of Chemistry, St. Edward's University, 3000 S. Congress Avenue, Austin, Texas 78704, United States
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Rahimi E, Imani A, Lekka M, Andreatta F, Gonzalez-Garcia Y, Mol JMC, Asselin E, Fedrizzi L. Morphological and Surface Potential Characterization of Protein Nanobiofilm Formation on Magnesium Alloy Oxide: Their Role in Biodegradation. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:10854-10866. [PMID: 35994730 PMCID: PMC9454254 DOI: 10.1021/acs.langmuir.2c01540] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 08/15/2022] [Indexed: 06/15/2023]
Abstract
The formation of a protein nanobiofilm on the surface of degradable biomaterials such as magnesium (Mg) and its alloys influences metal ion release, cell adhesion/spreading, and biocompatibility. During the early stage of human body implantation, competition and interaction between inorganic species and protein molecules result in a complex film containing Mg oxide and a protein layer. This film affects the electrochemical properties of the metal surface, the protein conformational arrangement, and the electronic properties of the protein/Mg oxide interface. In this study, we discuss the impact of various simulated body fluids, including sodium chloride (NaCl), phosphate-buffered saline (PBS), and Hanks' solutions on protein adsorption, electrochemical interactions, and electrical surface potential (ESP) distribution at the adsorbed protein/Mg oxide interface. After 10 min of immersion in NaCl, atomic force microscopy (AFM) and scanning Kelvin probe force microscopy (SKPFM) showed a higher surface roughness related to enhanced degradation and lower ESP distribution on a Mg-based alloy than those in other solutions. Furthermore, adding bovine serum albumin (BSA) to all solutions caused a decline in the total surface roughness and ESP magnitude on the Mg alloy surface, particularly in the NaCl electrolyte. Using SKPFM surface analysis, we detected a protein nanobiofilm (∼10-20 nm) with an aggregated and/or fibrillary morphology only on the Mg surface exposed in Hanks' and PBS solutions; these surfaces had a lower ESP value than the oxide layer.
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Affiliation(s)
- Ehsan Rahimi
- Polytechnic
Department of Engineering and Architecture, University of Udine, 33100 Udine, Italy
- Department
of Materials Science and Engineering, Delft
University of Technology, Mekelweg 2, 2628 CD Delft, The Netherlands
| | - Amin Imani
- Department
of Materials Engineering, The University
of British Columbia, Vancouver, BC, V6T 1Z4, Canada
| | - Maria Lekka
- CIDETEC,
Basque Research and Technology Alliance (BRTA), Po. Miramón 196, 20014 Donostia-San Sebastián, Spain
| | - Francesco Andreatta
- Polytechnic
Department of Engineering and Architecture, University of Udine, 33100 Udine, Italy
| | - Yaiza Gonzalez-Garcia
- Department
of Materials Science and Engineering, Delft
University of Technology, Mekelweg 2, 2628 CD Delft, The Netherlands
| | - Johannes M. C. Mol
- Department
of Materials Science and Engineering, Delft
University of Technology, Mekelweg 2, 2628 CD Delft, The Netherlands
| | - Edouard Asselin
- Department
of Materials Engineering, The University
of British Columbia, Vancouver, BC, V6T 1Z4, Canada
| | - Lorenzo Fedrizzi
- Polytechnic
Department of Engineering and Architecture, University of Udine, 33100 Udine, Italy
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Kawaguchi H, Imanaka H, Imamura K, Ishida N. Direct measurements of interaction forces of bovine serum albumin and lysozyme with stainless steel by atomic force microscopy. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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5
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Jeon SI, Jeong JH, Kim JE, Haque MR, Kim J, Byun Y, Ahn CH. Synthesis of PEG-dendron for surface modification of pancreatic islets and suppression of the immune response. J Mater Chem B 2021; 9:2631-2640. [PMID: 33683280 DOI: 10.1039/d1tb00069a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Islet cell transplantation has been an effective method for the treatment of type 1 diabetes. The transplanted islets release insulin in response to changes in blood glucose levels. The clinical application of islet transplantation, however, has been hindered because of some critical problems including immune responses to grafted islets and side effects caused by overdosed immunosuppressive drugs. Herein, surface modification technology using poly(ethylene glycol) (PEG)-dendron was proposed to safeguard islets from the host immune system. PEG-dendron was synthesized by a divergent polymerization method and utilized to cover the islet antigen surface. Successful conjugation of PEG-dendron on the islet surface was achieved without affecting islet morphology, viability, and functionality at a concentration of 1.00%. Surface modification using PEG-dendron effectively prevented protein absorption and immune activation. Foremost, it improved the survival rate of islet grafts in vivo when combined with a low dose of immunosuppressive drugs. In conclusion, PEG-dendron is a potential candidate for the surface modification of pancreatic islets to mitigate immune responses after transplantation.
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Affiliation(s)
- Seong Ik Jeon
- Research Institute of Advanced Materials (RIAM), Department of Materials Science and Engineering, Seoul National University, 1 Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea.
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Klok O, Igual Munoz A, Mischler S. An Overview of Serum Albumin Interactions with Biomedical Alloys. MATERIALS (BASEL, SWITZERLAND) 2020; 13:E4858. [PMID: 33138286 PMCID: PMC7662596 DOI: 10.3390/ma13214858] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 10/25/2020] [Accepted: 10/27/2020] [Indexed: 01/23/2023]
Abstract
Understanding the interactions between biomedical alloys and body fluids is of importance for the successful and safe performance of implanted devices. Albumin, as the first protein that comes in contact with an implant surface, can determine the biocompatibility of biomedical alloys. The interaction of albumin with biomedical alloys is a complex process influenced by numerous factors. This literature overview aims at presenting the current understanding of the mechanisms of serum albumin (both Bovine Serum Albumin, BSA, and Human Serum Albumin, HSA) interactions with biomedical alloys, considering only those research works that present a mechanistic description of the involved phenomena. Widely used biomedical alloys, such as 316L steel, CoCrMo and Titanium alloys are specifically addressed in this overview. Considering the literature analysis, four albumin-related phenomena can be distinguished: adsorption, reduction, precipitation, and protein-metal binding. The experimental techniques used to understand and quantify those phenomena are described together with the studied parameters influencing them. The crucial effect of the electrochemical potential on those phenomena is highlighted. The effect of the albumin-related phenomena on corrosion behavior of biomedical materials also is discussed.
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Affiliation(s)
- Oksana Klok
- Tribology and Interfacial Chemistry Group, Ecole Polytechnique Fédérale de Lausanne (EPFL), 1015 Lausanne, Switzerland; (A.I.M.); (S.M.)
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Samajdar RN, Kumar C, Viswanath P, Bhattacharyya AJ. Studying Hemoglobin and a Bare Metal–Porphyrin Complex Immobilized on Functionalized Silicon Surfaces Using Synchrotron X-ray Reflectivity. J Phys Chem B 2019; 123:7492-7503. [DOI: 10.1021/acs.jpcb.9b03085] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Rudra N. Samajdar
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bengaluru 560012, India
| | - Chandan Kumar
- Center for Nano and Soft Matter Science, Bengaluru 560013, India
| | - P. Viswanath
- Center for Nano and Soft Matter Science, Bengaluru 560013, India
| | - Aninda J. Bhattacharyya
- Solid State and Structural Chemistry Unit, Indian Institute of Science, Bengaluru 560012, India
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Wood MH, Humphreys EK, Welbourn RJL. Structural Changes in Adsorbed Cytochrome c upon Applied Potential Characterized by Neutron Reflectometry. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:6055-6063. [PMID: 30966748 DOI: 10.1021/acs.langmuir.9b00691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The structural behavior of an electron-transfer protein, cytochrome c, at the 316L stainless steel electrode/aqueous interface was investigated over a range of applied potentials using neutron reflectometry supported by solution depletion isotherms, X-ray reflectometry, and quartz crystal microbalance measurements. A custom-made electrochemical cell allowed in situ observation of the adsorbed protein across a range of applied potentials; models fitted to the NR data showed a compact inner protein layer at the metal/electrolyte interface and a further thicker but highly diffuse layer that could be removed by rinsing. The overall amount adsorbed was found to be strongly dependent on the applied potential and buffer pH. Subtle but significant changes in the structure of the adsorbed protein layer were seen as the potential was swept between ±0.40 V, reflecting changing attractive/repulsive interactions between the protein's charged side groups and the surface. At greater applied potentials, irreversible changes in the stainless steel film structure were also observed and attributed to deuterium absorption into the metal.
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Affiliation(s)
- Mary H Wood
- School of Chemistry , University of Birmingham , Birmingham B15 2TT , U.K
| | - Elizabeth K Humphreys
- Department of Chemistry , University of Cambridge , Lensfield Road , Cambridge CB3 1EW , U.K
| | - Rebecca J L Welbourn
- ISIS Neutron & Muon Source, Rutherford Appleton Laboratory , Didcot OX11 0QX , U.K
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