1
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Bahatibieke A, Wei S, Feng H, Zhao J, Ma M, Li J, Xie Y, Qiao K, Wang Y, Peng J, Meng H, Zheng Y. Injectable and in situ foaming shape-adaptive porous Bio-based polyurethane scaffold used for cartilage regeneration. Bioact Mater 2024; 39:1-13. [PMID: 38783924 PMCID: PMC11108820 DOI: 10.1016/j.bioactmat.2024.03.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2023] [Revised: 03/05/2024] [Accepted: 03/10/2024] [Indexed: 05/25/2024] Open
Abstract
Irregular articular cartilage injury is a common type of joint trauma, often resulting from intense impacts and other factors that lead to irregularly shaped wounds, the limited regenerative capacity of cartilage and the mismatched shape of the scaffods have contributed to unsatisfactory therapeutic outcomes. While injectable materials are a traditional solution to adapt to irregular cartilage defects, they have limitations, and injectable materials often lack the porous microstructures favorable for the rapid proliferation of cartilage cells. In this study, an injectable porous polyurethane scaffold named PU-BDO-Gelatin-Foam (PUBGF) was prepared. After injection into cartilage defects, PUBGF forms in situ at the site of the defect and exhibits a dynamic microstructure during the initial two weeks. This dynamic microstructure endows the scaffold with the ability to retain substances within its interior, thereby enhancing its capacity to promote chondrogenesis. Furthermore, the chondral repair efficacy of PUBGF was validated by directly injecting it into rat articular cartilage injury sites. The injectable PUBGF scaffold demonstrates a superior potential for promoting the repair of cartilage defects when compared to traditional porous polyurethane scaffolds. The substance retention ability of this injectable porous scaffold makes it a promising option for clinical applications.
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Affiliation(s)
- Abudureheman Bahatibieke
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Shuai Wei
- Institute of Orthopaedics, Chinese PLA General Hospital, Beijing, 100853, China
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, 215004, China
| | - Han Feng
- Institute of Orthopaedics, Chinese PLA General Hospital, Beijing, 100853, China
- Hebei North University, Zhangjiakou, 075000, Hebei Province, China
| | - Jianming Zhao
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Mengjiao Ma
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Junfei Li
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Yajie Xie
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Kun Qiao
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Yanseng Wang
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Jiang Peng
- Institute of Orthopaedics, Chinese PLA General Hospital, Beijing, 100853, China
| | - Haoye Meng
- Institute of Orthopaedics, Chinese PLA General Hospital, Beijing, 100853, China
| | - Yudong Zheng
- School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing, 100083, China
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2
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Behroozi Kohlan T, Wen Y, Mini C, Finne-Wistrand A. Schiff base crosslinked hyaluronic acid hydrogels with tunable and cell instructive time-dependent mechanical properties. Carbohydr Polym 2024; 338:122173. [PMID: 38763720 DOI: 10.1016/j.carbpol.2024.122173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Revised: 03/30/2024] [Accepted: 04/16/2024] [Indexed: 05/21/2024]
Abstract
The dynamic interplay between cells and their native extracellular matrix (ECM) influences cellular behavior, imposing a challenge in biomaterial design. Dynamic covalent hydrogels are viscoelastic and show self-healing ability, making them a potential scaffold for recapitulating native ECM properties. We aimed to implement kinetically and thermodynamically distinct crosslinkers to prepare self-healing dynamic hydrogels to explore the arising properties and their effects on cellular behavior. To do so, aldehyde-substituted hyaluronic acid (HA) was synthesized to generate imine, hydrazone, and oxime crosslinked dynamic covalent hydrogels. Differences in equilibrium constants of these bonds yielded distinct properties including stiffness, stress relaxation, and self-healing ability. The effects of degree of substitution (DS), polymer concentration, crosslinker to aldehyde ratio, and crosslinker functionality on hydrogel properties were evaluated. The self-healing ability of hydrogels was investigated on samples of the same and different crosslinkers and DS to obtain hydrogels with gradient properties. Subsequently, human dermal fibroblasts were cultured in 2D and 3D to assess the cellular response considering the dynamic properties of the hydrogels. Moreover, assessing cell spreading and morphology on hydrogels having similar modulus but different stress relaxation rates showed the effects of matrix viscoelasticity with higher cell spreading in slower relaxing hydrogels.
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Affiliation(s)
- Taha Behroozi Kohlan
- Department of Fibre and Polymer Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Teknikringen, 56-58, SE 10044 Stockholm, Sweden
| | - Yanru Wen
- Department of Fibre and Polymer Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Teknikringen, 56-58, SE 10044 Stockholm, Sweden
| | - Carina Mini
- Department of Fibre and Polymer Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Teknikringen, 56-58, SE 10044 Stockholm, Sweden
| | - Anna Finne-Wistrand
- Department of Fibre and Polymer Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Teknikringen, 56-58, SE 10044 Stockholm, Sweden.
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3
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Rodriguez-Rivera GJ, Green M, Shah V, Leyendecker K, Cosgriff-Hernandez E. A user's guide to degradation testing of polyethylene glycol-based hydrogels: From in vitro to in vivo studies. J Biomed Mater Res A 2024; 112:1200-1212. [PMID: 37715481 DOI: 10.1002/jbm.a.37609] [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: 07/03/2023] [Revised: 08/21/2023] [Accepted: 08/29/2023] [Indexed: 09/17/2023]
Abstract
Poly(ethylene glycol) (PEG)-based hydrogels have gained significant attention in the field of biomedical applications due to their versatility and antifouling properties. Acrylate-derivatized PEG hydrogels (PEGDA) are some of the most widely studied hydrogels; however, there has been debate around the degradation mechanism and predicting resorption rates. Several factors influence the degradation rate of PEG hydrogels, including backbone and endgroup chemistry, macromer molecular weight, and polymer concentration. In addition to hydrogel parameters, it is necessary to understand the influence of biological and environmental conditions (e.g., pH and temperature) on hydrogel degradation. Rigorous methods for monitoring degradation in both in vitro and in vivo settings are also critical to hydrogel design and development. Herein, we provide guidance on tailoring PEG hydrogel chemistry to achieve target hydrolytic degradation kinetics for both resorbable and biostable applications. A detailed overview of accelerated testing methods and hydrogel degradation characterization is provided to aid researchers in experimental design and interpreting in vitro-in vivo correlations necessary for predicting hydrogel device performance.
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Affiliation(s)
| | - Mykel Green
- Department of Biomedical Engineering, The University of Texas, Austin, Texas, USA
| | - Vani Shah
- Department of Biomedical Engineering, The University of Texas, Austin, Texas, USA
| | - Kathleen Leyendecker
- Department of Mechanical Engineering, The University of Texas, Austin, Texas, USA
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4
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Wancura M, Nkansah A, Robinson A, Toubbeh S, Talanker M, Jones S, Cosgriff-Hernandez E. PEG-Based Hydrogel Coatings: Design Tools for Biomedical Applications. Ann Biomed Eng 2024; 52:1804-1815. [PMID: 36774427 DOI: 10.1007/s10439-023-03154-9] [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: 11/08/2022] [Accepted: 01/16/2023] [Indexed: 02/13/2023]
Abstract
Device failure due to undesired biological responses remains a substantial roadblock in the development and translation of new devices into clinical care. Polyethylene glycol (PEG)-based hydrogel coatings can be used to confer antifouling properties to medical devices-enabling minimization of biological responses such as bacterial infection, thrombosis, and foreign body reactions. Application of hydrogel coatings to diverse substrates requires careful consideration of multiple material factors. Herein, we report a systematic investigation of two coating methods: (1) traditional photoinitiated hydrogel coatings; (2) diffusion-mediated, redox-initiated hydrogel coatings. The effects of method, substrate, and compositional variables on the resulting hydrogel coating thickness are presented. To expand the redox-based method to include high molecular weight macromers, a mechanistic investigation of the role of cure rate and macromer viscosity was necessary to balance solution infiltration and gelation. Overall, these structure-property relationships provide users with a toolbox for hydrogel coating design for a broad range of medical devices.
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Affiliation(s)
- Megan Wancura
- Department of Chemistry, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Abbey Nkansah
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Andrew Robinson
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Shireen Toubbeh
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Michael Talanker
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Sarah Jones
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, 78712, USA
| | - Elizabeth Cosgriff-Hernandez
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX, 78712, USA.
- Department of Biomedical Engineering, The University of Texas at Austin, 107 W. Dean Keeton, BME Building, Room 3.503D, Austin, TX, 78712, USA.
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5
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Choe RH, Kuzemchak BC, Kotsanos GJ, Mirdamadi E, Sherry M, Devoy E, Lowe T, Packer JD, Fisher JP. Designing Biomimetic 3D-Printed Osteochondral Scaffolds for Enhanced Load-Bearing Capacity. Tissue Eng Part A 2024; 30:409-420. [PMID: 38481121 DOI: 10.1089/ten.tea.2023.0217] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/19/2024] Open
Abstract
Osteoarthritis is a debilitating chronic joint disorder that affects millions of people worldwide. Since palliative and surgical treatments cannot completely regenerate hyaline cartilage within the articulating joint, osteochondral (OC) tissue engineering has been explored to heal OC defects. Utilizing computational simulations and three-dimensional (3D) printing, we aimed to build rationale around fabricating OC scaffolds with enhanced biomechanics. First, computational simulations revealed that interfacial fibrils within a bilayer alter OC scaffold deformation patterns by redirecting load-induced stresses toward the top of the cartilage layer. Principal component analysis revealed that scaffolds with 800 μm long fibrils (scaffolds 8A-8H) possessed optimal biomechanical properties to withstand compression and shear forces. While compression testing indicated that OC scaffolds with 800 μm fibrils did not have greater compressive moduli than other scaffolds, interfacial shear tests indicated that scaffold 8H possessed the greatest shear strength. Lastly, failure analysis demonstrated that yielding or buckling models describe interfacial fibril failure depending on fibril slenderness S. Specifically for scaffolds with packing density n = 6 and n = 8, the yielding failure model fits experimental loads with S < 10, while the buckling model fitted scaffolds with S < 10 slenderness. The research presented provides critical insights into designing 3D printed interfacial scaffolds with refined biomechanics toward improving OC tissue engineering outcomes.
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Affiliation(s)
- Robert H Choe
- Fischell Department of Bioengineering, University of Maryland, College Park, College Park, Maryland, USA
- Fischell Department of Bioengineering, Center for Engineering Complex Tissues, University of Maryland, College Park, College Park, Maryland, USA
| | - Blake C Kuzemchak
- Fischell Department of Bioengineering, University of Maryland, College Park, College Park, Maryland, USA
- Fischell Department of Bioengineering, Center for Engineering Complex Tissues, University of Maryland, College Park, College Park, Maryland, USA
| | - George J Kotsanos
- Fischell Department of Bioengineering, University of Maryland, College Park, College Park, Maryland, USA
- Fischell Department of Bioengineering, Center for Engineering Complex Tissues, University of Maryland, College Park, College Park, Maryland, USA
| | - Eman Mirdamadi
- Fischell Department of Bioengineering, University of Maryland, College Park, College Park, Maryland, USA
- Department of Oral and Maxillofacial Surgery, University of Maryland School of Dentistry, Baltimore, Maryland, USA
| | - Mary Sherry
- Fischell Department of Bioengineering, University of Maryland, College Park, College Park, Maryland, USA
- Fischell Department of Bioengineering, Center for Engineering Complex Tissues, University of Maryland, College Park, College Park, Maryland, USA
| | - Eoin Devoy
- Fischell Department of Bioengineering, University of Maryland, College Park, College Park, Maryland, USA
- Fischell Department of Bioengineering, Center for Engineering Complex Tissues, University of Maryland, College Park, College Park, Maryland, USA
| | - Tao Lowe
- Fischell Department of Bioengineering, University of Maryland, College Park, College Park, Maryland, USA
- Department of Oral and Maxillofacial Surgery, University of Maryland School of Dentistry, Baltimore, Maryland, USA
| | - Jonathan D Packer
- Department of Orthopedics, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - John P Fisher
- Fischell Department of Bioengineering, University of Maryland, College Park, College Park, Maryland, USA
- Fischell Department of Bioengineering, Center for Engineering Complex Tissues, University of Maryland, College Park, College Park, Maryland, USA
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6
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Ebrahimi M, Arreguín-Campos M, Dookhith AZ, Aldana AA, Lynd NA, Sanoja GE, Baker MB, Pitet LM. Tailoring Network Topology in Mechanically Robust Hydrogels for 3D Printing and Injection. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 38712527 DOI: 10.1021/acsami.4c03209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Tissue engineering and regenerative medicine are confronted with a persistent challenge: the urgent demand for robust, load-bearing, and biocompatible scaffolds that can effectively endure substantial deformation. Given that inadequate mechanical performance is typically rooted in structural deficiencies─specifically, the absence of energy dissipation mechanisms and network uniformity─a crucial step toward solving this problem is generating synthetic approaches that enable exquisite control over network architecture. This work systematically explores structure-property relationships in poly(ethylene glycol)-based hydrogels constructed utilizing thiol-yne chemistry. We systematically vary polymer concentration, constituent molar mass, and cross-linking protocols to understand the impact of architecture on hydrogel mechanical properties. The network architecture was resolved within the molecular model of Rubinstein-Panyukov to obtain the densities of chemical cross-links and entanglements. We employed both nucleophilic and radical pathways, uncovering notable differences in mechanical response, which highlight a remarkable degree of versatility achievable by tuning readily accessible parameters. Our approach yielded hydrogels with good cell viability and remarkably robust tensile and compression profiles. Finally, the hydrogels are shown to be amenable to advanced processing techniques by demonstrating injection- and extrusion-based 3D printing. Tuning the mechanism and network regularity during the cell-compatible formation of hydrogels is an emerging strategy to control the properties and processability of hydrogel biomaterials by making simple and rational design choices.
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Affiliation(s)
- Mahsa Ebrahimi
- Advanced Functional Polymers (AFP) Laboratory, Institute for Materials Research (imo-imomec), Hasselt University, Martelarenlaan 42, Hasselt 3500, Belgium
- Department of Instructive Biomaterials Engineering and Department of Complex Tissue Regeneration, MERLN Institute for Technology Inspired Regenerative Medicine, Maastricht University, Universiteitssingel 40, Maastricht 6229 ET, The Netherlands
| | - Mariana Arreguín-Campos
- Advanced Functional Polymers (AFP) Laboratory, Institute for Materials Research (imo-imomec), Hasselt University, Martelarenlaan 42, Hasselt 3500, Belgium
- Department of Instructive Biomaterials Engineering and Department of Complex Tissue Regeneration, MERLN Institute for Technology Inspired Regenerative Medicine, Maastricht University, Universiteitssingel 40, Maastricht 6229 ET, The Netherlands
| | - Aaliyah Z Dookhith
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Ana A Aldana
- Department of Instructive Biomaterials Engineering and Department of Complex Tissue Regeneration, MERLN Institute for Technology Inspired Regenerative Medicine, Maastricht University, Universiteitssingel 40, Maastricht 6229 ET, The Netherlands
| | - Nathaniel A Lynd
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Gabriel E Sanoja
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, Texas 78712, United States
| | - Matthew B Baker
- Department of Instructive Biomaterials Engineering and Department of Complex Tissue Regeneration, MERLN Institute for Technology Inspired Regenerative Medicine, Maastricht University, Universiteitssingel 40, Maastricht 6229 ET, The Netherlands
| | - Louis M Pitet
- Advanced Functional Polymers (AFP) Laboratory, Institute for Materials Research (imo-imomec), Hasselt University, Martelarenlaan 42, Hasselt 3500, Belgium
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7
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Yu C, Han Z, Sun H, Tong J, Hu Z, Wang Y, Fang X, Yue W, Qian S, Nie G. Balancing mechanical property and swelling behavior of bacterial cellulose film by in-situ adding chitosan oligosaccharide and covalent crosslinking with γ-PGA. Int J Biol Macromol 2024; 267:131280. [PMID: 38640644 DOI: 10.1016/j.ijbiomac.2024.131280] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 03/23/2024] [Accepted: 03/29/2024] [Indexed: 04/21/2024]
Abstract
Bacterial cellulose (BC) is an ideal candidate material for drug delivery, but the disbalance between the swelling behavior and mechanical properties limits its application. In this work, covalent crosslinking of γ-polyglutamic acid (γ-PGA) with the chitosan oligosaccharide (COS) embedded in BC was designed to remove the limitation. As a result, the dosage, time, and batch of COS addition significantly affected the mechanical properties and the yield of bacterial cellulose complex film (BCCF). The addition of 2.25 % COS at the incubation time of 0.5, 1.5, and 2 d increased the Young's modulus and the yield by 5.65 and 1.42 times, respectively, but decreased the swelling behavior to 1774 %, 46 % of that of native BC. Covalent γ-PGA transformed the dendritic structure of BCCF into a spider network, decreasing the porosity and increasing the swelling behavior by 3.46 times. The strategy balanced the swelling behavior and mechanical properties through tunning hydrogen bond, electrostatic interaction, and amido bond. The modified BCCF exhibited a desired behavior of benzalkonium chlorides transport, competent for drug delivery. Thereby, the strategy will be a competent candidate to modify BC for such potential applications as wound dressing, artificial skin, scar-inhibiting patch, and so on.
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Affiliation(s)
- Chenrui Yu
- College of Biological and Food Engineering, Anhui Polytechnic University, 241000 Wuhu, China; College of Biological Science and Medical Engineering, Donghua University, 201620, Shanghai, China
| | - Zhenxing Han
- College of Biological and Food Engineering, Anhui Polytechnic University, 241000 Wuhu, China
| | - Hongxia Sun
- College of Chemistry and Materials Science, Anhui Normal University, 241002 Wuhu, China.
| | - Jie Tong
- College of Biological and Food Engineering, Anhui Polytechnic University, 241000 Wuhu, China
| | - Ziwei Hu
- College of Biological and Food Engineering, Anhui Polytechnic University, 241000 Wuhu, China
| | - Yu Wang
- College of Biological and Food Engineering, Anhui Polytechnic University, 241000 Wuhu, China
| | - Xu Fang
- State Key Laboratory of Microbial Technology, Shandong University, Qingdao, Shandong 266237, China.
| | - Wenjin Yue
- School of Chemical and Environmental Engineering, Anhui Polytechnic University, 241000 Wuhu, China.
| | - Senhe Qian
- College of Biological and Food Engineering, Anhui Polytechnic University, 241000 Wuhu, China.
| | - Guangjun Nie
- College of Biological and Food Engineering, Anhui Polytechnic University, 241000 Wuhu, China.
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8
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Richbourg NR, Irakoze N, Kim H, Peyton SR. Outlook and opportunities for engineered environments of breast cancer dormancy. SCIENCE ADVANCES 2024; 10:eadl0165. [PMID: 38457510 PMCID: PMC10923521 DOI: 10.1126/sciadv.adl0165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/23/2023] [Accepted: 02/01/2024] [Indexed: 03/10/2024]
Abstract
Dormant, disseminated breast cancer cells resist treatment and may relapse into malignant metastases after decades of quiescence. Identifying how and why these dormant breast cancer cells are triggered into outgrowth is a key unsolved step in treating latent, metastatic breast cancer. However, our understanding of breast cancer dormancy in vivo is limited by technical challenges and ethical concerns with triggering the activation of dormant breast cancer. In vitro models avoid many of these challenges by simulating breast cancer dormancy and activation in well-controlled, bench-top conditions, creating opportunities for fundamental insights into breast cancer biology that complement what can be achieved through animal and clinical studies. In this review, we address clinical and preclinical approaches to treating breast cancer dormancy, how precisely controlled artificial environments reveal key interactions that regulate breast cancer dormancy, and how future generations of biomaterials could answer further questions about breast cancer dormancy.
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Affiliation(s)
- Nathan R. Richbourg
- Department of Chemical Engineering, University of Massachusetts Amherst, MA 01003, USA
| | - Ninette Irakoze
- Department of Chemical Engineering, University of Massachusetts Amherst, MA 01003, USA
| | - Hyuna Kim
- Molecular and Cellular Biology Graduate Program, University of Massachusetts Amherst, MA 01003, USA
| | - Shelly R. Peyton
- Department of Chemical Engineering, University of Massachusetts Amherst, MA 01003, USA
- Molecular and Cellular Biology Graduate Program, University of Massachusetts Amherst, MA 01003, USA
- Department of Biomedical Engineering, University of Massachusetts Amherst Amherst, MA 01003, USA
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9
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Mozipo EA, Galindo AN, Khachatourian JD, Harris CG, Dorogin J, Spaulding VR, Ford MR, Singhal M, Fogg KC, Hettiaratchi MH. Statistical optimization of hydrazone-crosslinked hyaluronic acid hydrogels for protein delivery. J Mater Chem B 2024; 12:2523-2536. [PMID: 38344905 PMCID: PMC10916537 DOI: 10.1039/d3tb01588b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2023] [Accepted: 02/01/2024] [Indexed: 02/27/2024]
Abstract
Hydrazone-crosslinked hydrogels are attractive protein delivery vehicles for regenerative medicine. However, each regenerative medicine application requires unique hydrogel properties to achieve an ideal outcome. The properties of a hydrogel can be impacted by numerous factors involved in its fabrication. We used design of experiments (DoE) statistical modeling to efficiently optimize the physicochemical properties of a hyaluronic acid (HA) hydrazone-crosslinked hydrogel for protein delivery for bone regeneration. We modified HA with either adipic acid dihydrazide (HA-ADH) or aldehyde (HA-Ox) functional groups and used DoE to evaluate the interactions of three input variables, the molecular weight of HA (40 or 100 kDa), the concentration of HA-ADH (1-3% w/v), and the concentration of HA-Ox (1-3% w/v), on three output responses, gelation time, compressive modulus, and hydrogel stability over time. We identified 100 kDa HA-ADH3.00HA-Ox2.33 as an optimal hydrogel that met all of our design criteria, including displaying a gelation time of 3.7 minutes, compressive modulus of 62.1 Pa, and minimal mass change over 28 days. For protein delivery, we conjugated affinity proteins called affibodies that were specific to the osteogenic protein bone morphogenetic protein-2 (BMP-2) to HA hydrogels and demonstrated that our platform could control the release of BMP-2 over 28 days. Ultimately, our approach demonstrates the utility of DoE for optimizing hydrazone-crosslinked HA hydrogels for protein delivery.
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Affiliation(s)
- Esther A Mozipo
- Phil and Penny Knight Campus for Accelerating Scientific Impact, University of Oregon, Eugene, OR, USA
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, OR, USA
| | - Alycia N Galindo
- Phil and Penny Knight Campus for Accelerating Scientific Impact, University of Oregon, Eugene, OR, USA
| | - Jenna D Khachatourian
- Phil and Penny Knight Campus for Accelerating Scientific Impact, University of Oregon, Eugene, OR, USA
- Department of Human Physiology, University of Oregon, Eugene, OR, USA
| | - Conor G Harris
- School of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, OR, USA
| | - Jonathan Dorogin
- Phil and Penny Knight Campus for Accelerating Scientific Impact, University of Oregon, Eugene, OR, USA
| | | | - Madeleine R Ford
- Phil and Penny Knight Campus for Accelerating Scientific Impact, University of Oregon, Eugene, OR, USA
- Department of Human Physiology, University of Oregon, Eugene, OR, USA
| | - Malvika Singhal
- Phil and Penny Knight Campus for Accelerating Scientific Impact, University of Oregon, Eugene, OR, USA
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, OR, USA
- Institute of Molecular Biology, University of Oregon, Eugene, OR, USA.
| | - Kaitlin C Fogg
- School of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, OR, USA
| | - Marian H Hettiaratchi
- Phil and Penny Knight Campus for Accelerating Scientific Impact, University of Oregon, Eugene, OR, USA
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, OR, USA
- Institute of Molecular Biology, University of Oregon, Eugene, OR, USA.
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10
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Giorgi Z, Veneruso V, Petillo E, Veglianese P, Perale G, Rossi F. Biomaterials and Cell Therapy Combination in Central Nervous System Treatments. ACS APPLIED BIO MATERIALS 2024; 7:80-98. [PMID: 38158393 PMCID: PMC10792669 DOI: 10.1021/acsabm.3c01058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Revised: 12/07/2023] [Accepted: 12/11/2023] [Indexed: 01/03/2024]
Abstract
Current pharmacological and surgical therapies for the central nervous system (CNS) show a limited capacity to reduce the damage progression; that together with the intrinsic limited capability of the CNS to regenerate greatly reduces the hopes of recovery. Among all the therapies proposed, the tissue engineering strategies supplemented with therapeutic stem cells remain the most promising. Neural tissue engineering strategies are based on the development of devices presenting optimal physical, chemical, and mechanical properties which, once inserted in the injured site, can support therapeutic cells, limiting the effect of a hostile environment and supporting regenerative processes. Thus, this review focuses on the employment of hydrogel and nanofibrous scaffolds supplemented with stem cells as promising therapeutic tools for the central and peripheral nervous systems in preclinical and clinical applications.
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Affiliation(s)
- Zoe Giorgi
- Department
of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, piazza Leonardo da Vinci 32, 20133, Milan, Italy
| | - Valeria Veneruso
- Istituto
di Ricerche Farmacologiche Mario Negri IRCCS, Via Mario Negri 2, 20156 Milan, Italy
- Faculty
of Biomedical Sciences, University of Southern
Switzerland (USI), Via
Buffi 13, 6900 Lugano, Switzerland
| | - Emilia Petillo
- Department
of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, piazza Leonardo da Vinci 32, 20133, Milan, Italy
- Istituto
di Ricerche Farmacologiche Mario Negri IRCCS, Via Mario Negri 2, 20156 Milan, Italy
| | - Pietro Veglianese
- Istituto
di Ricerche Farmacologiche Mario Negri IRCCS, Via Mario Negri 2, 20156 Milan, Italy
- Faculty
of Biomedical Sciences, University of Southern
Switzerland (USI), Via
Buffi 13, 6900 Lugano, Switzerland
| | - Giuseppe Perale
- Faculty
of Biomedical Sciences, University of Southern
Switzerland (USI), Via
Buffi 13, 6900 Lugano, Switzerland
- Ludwig
Boltzmann Institute for Experimental and Clinical Traumatology, Donaueschingenstrasse 13, 1200 Vienna, Austria
| | - Filippo Rossi
- Department
of Chemistry, Materials and Chemical Engineering “Giulio Natta”, Politecnico di Milano, piazza Leonardo da Vinci 32, 20133, Milan, Italy
- Faculty
of Biomedical Sciences, University of Southern
Switzerland (USI), Via
Buffi 13, 6900 Lugano, Switzerland
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11
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Zhang HY, Wang KT, Zhang Y, Cui YL, Wang Q. A self-healing hydrogel wound dressing based on oxidized Bletilla striata polysaccharide and cationic gelatin for skin trauma treatment. Int J Biol Macromol 2023; 253:127189. [PMID: 37783245 DOI: 10.1016/j.ijbiomac.2023.127189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Revised: 09/27/2023] [Accepted: 09/29/2023] [Indexed: 10/04/2023]
Abstract
Skin trauma presents significant treatment challenges in clinical settings. Hydrogels made from naturally-derived polysaccharide have demonstrated great potential in wound healing. Here, a novel in-situ crosslinked self-healing hydrogel was prepared using oxidized Bletilla striata polysaccharide (BSP) and cationic gelatin via a Schiff-base reaction without the need for any chemical crosslinkers. Similar to the natural extracellular matrix, the BSP-gelatin hydrogel (BG-gel) exhibited typical viscoelastic characteristics. The rheological properties, mechanical behavior, porous structure, and degradation performance of BG-gel could be adjusted by changing the aldehyde group content of BSP. Importantly, the hydrogel showed superior hemostatic performance in mouse tail amputation and rat liver incision models. It significantly facilitated wound healing by promoting hair follicles regeneration, blood vessels repair, collagen deposition, and inducing skin tissue remodeling via increased CD31 expression in a full-thickness skin wound rat model. This multifunctional hydrogel holds potential as a wound dressing for skin trauma, offering both hemostasis and expedited healing.
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Affiliation(s)
- Hai-Yun Zhang
- State key laboratory of Component based Chinese Medicine, Haihe Laboratory of Modern Chinese Medicine, Research Center of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China; State Key Laboratory of Advanced Medical Materials and Devices, Engineering Research Center of Pulmonary and Critical Care Medicine Technology and Device, (Ministry of Education), Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Science, Peking Union Medical College, Tianjin 300192, China
| | - Kun-Tang Wang
- State key laboratory of Component based Chinese Medicine, Haihe Laboratory of Modern Chinese Medicine, Research Center of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Yan Zhang
- State Key Laboratory of Advanced Medical Materials and Devices, Engineering Research Center of Pulmonary and Critical Care Medicine Technology and Device, (Ministry of Education), Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Science, Peking Union Medical College, Tianjin 300192, China
| | - Yuan-Lu Cui
- State key laboratory of Component based Chinese Medicine, Haihe Laboratory of Modern Chinese Medicine, Research Center of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China.
| | - Qiangsong Wang
- State Key Laboratory of Advanced Medical Materials and Devices, Engineering Research Center of Pulmonary and Critical Care Medicine Technology and Device, (Ministry of Education), Tianjin Key Laboratory of Biomedical Materials, Institute of Biomedical Engineering, Chinese Academy of Medical Science, Peking Union Medical College, Tianjin 300192, China.
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12
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Muir VG, Fainor M, Orozco BS, Hilliard RL, Boyes M, Smith HE, Mauck RL, Schaer TP, Burdick JA, Gullbrand SE. Injectable Radiopaque Hyaluronic Acid Granular Hydrogels for Intervertebral Disc Repair. Adv Healthc Mater 2023:e2303326. [PMID: 38142300 PMCID: PMC11193841 DOI: 10.1002/adhm.202303326] [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: 09/29/2023] [Revised: 12/10/2023] [Indexed: 12/25/2023]
Abstract
Injectable hydrogels offer minimally-invasive treatment options for degenerative disc disease, a prevalent condition affecting millions annually. Many hydrogels explored for intervertebral disc (IVD) repair suffer from weak mechanical integrity, migration issues, and expulsion. To overcome these limitations, an injectable and radiopaque hyaluronic acid granular hydrogel is developed. The granular structure provides easy injectability and low extrusion forces, while the radiopacity enables direct visualization during injection into the disc and non-invasive monitoring after injection. The radiopaque granular hydrogel is injected into rabbit disc explants to investigate restoration of healthy disc mechanics following needle puncture injury ex vivo and then delivered in a minimally-invasive manner into the intradiscal space in a clinically-relevant in vivo large animal goat model of IVD degeneration initiated through degradation by chondroitinase. The radiopaque granular hydrogel successfully halted loss of disc height due to degeneration. Further, the hydrogel not only enhanced proteoglycan content and reduced collagen content in the nucleus pulposus (NP) region compared to degenerative discs, but also helped to maintain the structural integrity of the disc and promote healthy segregation of the NP and annulus fibrosus regions. Overall, this study demonstrates the great potential of an injectable radiopaque granular hydrogel for treatment of degenerative disc disease.
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Affiliation(s)
- Victoria G Muir
- Department of Bioengineering, School of Engineering and Applied Sciences, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Matthew Fainor
- Department of Orthopaedic Surgery, McKay Orthopaedic Research Laboratory, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Translational Musculoskeletal Research Center, Corporal Michael J. Crescenz VA Medical Center, Philadelphia, PA, 19104, USA
| | - Brianna S Orozco
- Department of Orthopaedic Surgery, McKay Orthopaedic Research Laboratory, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Translational Musculoskeletal Research Center, Corporal Michael J. Crescenz VA Medical Center, Philadelphia, PA, 19104, USA
| | - Rachel L Hilliard
- Department of Clinical Studies, New Bolton Center, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Madeline Boyes
- Department of Clinical Studies, New Bolton Center, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Harvey E Smith
- Department of Orthopaedic Surgery, McKay Orthopaedic Research Laboratory, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Translational Musculoskeletal Research Center, Corporal Michael J. Crescenz VA Medical Center, Philadelphia, PA, 19104, USA
| | - Robert L Mauck
- Department of Bioengineering, School of Engineering and Applied Sciences, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Department of Orthopaedic Surgery, McKay Orthopaedic Research Laboratory, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Translational Musculoskeletal Research Center, Corporal Michael J. Crescenz VA Medical Center, Philadelphia, PA, 19104, USA
| | - Thomas P Schaer
- Department of Clinical Studies, New Bolton Center, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
| | - Jason A Burdick
- Department of Bioengineering, School of Engineering and Applied Sciences, University of Pennsylvania, Philadelphia, PA, 19104, USA
- BioFrontiers Institute, University of Colorado Boulder, Boulder, CO, 80303, USA
- Department of Chemical and Biological Engineering, College of Engineering and Applied Science, University of Colorado Boulder, Boulder, CO, 80303, USA
| | - Sarah E Gullbrand
- Department of Orthopaedic Surgery, McKay Orthopaedic Research Laboratory, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, 19104, USA
- Translational Musculoskeletal Research Center, Corporal Michael J. Crescenz VA Medical Center, Philadelphia, PA, 19104, USA
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13
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Torres-Figueroa AV, de los Santos-Villalobos S, Rodríguez-Félix DE, Moreno-Salazar SF, Pérez-Martínez CJ, Chan-Chan LH, Ochoa-Meza A, del Castillo-Castro T. Physically and Chemically Cross-Linked Poly(vinyl alcohol)/Humic Acid Hydrogels for Agricultural Applications. ACS OMEGA 2023; 8:44784-44795. [PMID: 38046300 PMCID: PMC10688162 DOI: 10.1021/acsomega.3c05868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Revised: 10/13/2023] [Accepted: 10/31/2023] [Indexed: 12/05/2023]
Abstract
The preparation method of hydrogels has a significant effect on their structural and physicochemical properties. In this report, physically and chemically cross-linked poly(vinyl alcohol) (PVA) networks containing humic acid (HA) were alternatively prepared by autoclaving (AC) and through glutaraldehyde (GA) addition, respectively, for agricultural purposes. PVA/HA hydrogels were comparatively characterized by Fourier transform infrared spectroscopy, thermogravimetric analysis, mechanical assays, scanning electron microscopy, swelling kinetics measurements, and water retention tests in soil. AC hydrogels showed a more homogeneous porous microstructure, higher swelling levels, and a better capacity to preserve the humidity of soil than those obtained by adding GA. Both PVA/HA hydrogels exhibited no phytotoxicity on cultivation trials of Sorghum sp., but the plant growth was promoted with the GA-cross-linked network as compared to the effect of the AC sample. The release behavior of urea was modified according to the preparation method of the PVA/HA hydrogels. After 3 days of sustained urea release, 91% of the fertilizer was delivered from the AC hydrogel, whereas a lower amount of 56% was released for the GA-cross-linked hydrogel. Beyond the advantages of applying PVA/HA hydrogels in the agricultural field, an appropriate method of preparing these materials endows them with specific properties according to the requirements of the target crop.
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Affiliation(s)
- Ana V. Torres-Figueroa
- Departamento
de Investigación en Polímeros y Materiales, Universidad de Sonora, Hermosillo 83000, Mexico
| | - Sergio de los Santos-Villalobos
- Laboratorio
de Biotecnología del Recurso Microbiano, Departamento de Ciencias
Agronómicas y Veterinarias, Instituto
Tecnológico de Sonora, 5 de Febrero 818 Sur, Colonia Centro, Obregón 85000, Mexico
| | - Dora E. Rodríguez-Félix
- Departamento
de Investigación en Polímeros y Materiales, Universidad de Sonora, Hermosillo 83000, Mexico
| | - Sergio F. Moreno-Salazar
- Departamento
de Agricultura y Ganadería, Universidad
de Sonora, Carr. Bahía de Kino, Km. 21. Apartado Postal 305, Hermosillo, Sonora 83000, Mexico
| | | | - Lerma H. Chan-Chan
- Departamento
de Física, CONAHCyT, Universidad
de Sonora, Hermosillo 83000, Mexico
| | - Andrés Ochoa-Meza
- Departamento
de Agricultura y Ganadería, Universidad
de Sonora, Carr. Bahía de Kino, Km. 21. Apartado Postal 305, Hermosillo, Sonora 83000, Mexico
| | - Teresa del Castillo-Castro
- Departamento
de Investigación en Polímeros y Materiales, Universidad de Sonora, Hermosillo 83000, Mexico
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14
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Testa A, Spanke HT, Jambon-Puillet E, Yasir M, Feng Y, Küffner AM, Arosio P, Dufresne ER, Style RW, Rebane AA. Surface Passivation Method for the Super-repellence of Aqueous Macromolecular Condensates. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:14626-14637. [PMID: 37797324 PMCID: PMC10586374 DOI: 10.1021/acs.langmuir.3c01886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 09/21/2023] [Indexed: 10/07/2023]
Abstract
Solutions of macromolecules can undergo liquid-liquid phase separation to form droplets with ultralow surface tension. Droplets with such low surface tension wet and spread over common surfaces such as test tubes and microscope slides, complicating in vitro experiments. The development of a universal super-repellent surface for macromolecular droplets has remained elusive because their ultralow surface tension requires low surface energies. Furthermore, the nonwetting of droplets containing proteins poses additional challenges because the surface must remain inert to a wide range of chemistries presented by the various amino acid side chains at the droplet surface. Here, we present a method to coat microscope slides with a thin transparent hydrogel that exhibits complete dewetting (contact angles θ ≈ 180°) and minimal pinning of phase-separated droplets in aqueous solution. The hydrogel is based on a swollen matrix of chemically cross-linked polyethylene glycol diacrylate of molecular weight 12 kDa (PEGDA), and can be prepared with basic chemistry laboratory equipment. The PEGDA hydrogel is a powerful tool for in vitro studies of weak interactions, dynamics, and the internal organization of phase-separated droplets in aqueous solutions.
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Affiliation(s)
- Andrea Testa
- Department
of Materials, ETH Zürich, 8093 Zürich, Switzerland
| | | | - Etienne Jambon-Puillet
- Department
of Materials, ETH Zürich, 8093 Zürich, Switzerland
- LadHyX,
CNRS, Ecole Polytechnique, Institut Polytechnique
de Paris, Palaiseau 91120, France
| | - Mohammad Yasir
- Department
of Materials, ETH Zürich, 8093 Zürich, Switzerland
| | - Yanxia Feng
- Department
of Materials, ETH Zürich, 8093 Zürich, Switzerland
| | - Andreas M. Küffner
- Department
of Chemistry and Applied Biosciences, Institute
for Chemical and Bioengineering, ETH Zürich, 8093 Zürich, Switzerland
| | - Paolo Arosio
- Department
of Chemistry and Applied Biosciences, Institute
for Chemical and Bioengineering, ETH Zürich, 8093 Zürich, Switzerland
| | | | - Robert W. Style
- Department
of Materials, ETH Zürich, 8093 Zürich, Switzerland
| | - Aleksander A. Rebane
- Department
of Materials, ETH Zürich, 8093 Zürich, Switzerland
- Life
Molecules and Materials Laboratory, Programs in Chemistry and in Physics, New York University Abu Dhabi, P.O. Box 129188, Abu Dhabi, United Arab Emirates
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15
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Ursini O, Grieco M, Sappino C, Capodilupo AL, Giannitelli SM, Mauri E, Bucciarelli A, Coricciati C, de Turris V, Gigli G, Moroni L, Cortese B. Modulation of Methacrylated Hyaluronic Acid Hydrogels Enables Their Use as 3D Cultured Model. Gels 2023; 9:801. [PMID: 37888374 PMCID: PMC10606912 DOI: 10.3390/gels9100801] [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: 08/22/2023] [Revised: 09/28/2023] [Accepted: 09/30/2023] [Indexed: 10/28/2023] Open
Abstract
Bioengineered hydrogels represent physiologically relevant platforms for cell behaviour studies in the tissue engineering and regenerative medicine fields, as well as in in vitro disease models. Hyaluronic acid (HA) is an ideal platform since it is a natural biocompatible polymer that is widely used to study cellular crosstalk, cell adhesion and cell proliferation, and is one of the major components of the extracellular matrix (ECM). We synthesised chemically modified HA with photo-crosslinkable methacrylated groups (HA-MA) in aqueous solutions and in strictly monitored pH and temperature conditions to obtain hydrogels with controlled bulk properties. The physical and chemical properties of the different HA-MA hydrogels were investigated via rheological studies, mechanical testing and scanning electron microscopy (SEM) imaging, which allowed us to determine the optimal biomechanical properties and develop a biocompatible scaffold. The morphological evolution processes and proliferation rates of glioblastoma cells (U251-MG) cultured on HA-MA surfaces were evaluated by comparing 2D structures with 3D structures, showing that the change in dimensionality impacted cell functions and interactions. The cell viability assays and evaluation of mitochondrial metabolism showed that the hydrogels did not interfere with cell survival. In addition, morphological studies provided evidence of cell-matrix interactions that promoted cell budding from the spheroids and the invasiveness in the surrounding environment.
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Affiliation(s)
- Ornella Ursini
- National Research Council-Institute of Nanotechnology (CNR Nanotec), c/o Edificio Fermi, University Sapienza, Pz.le Aldo Moro 5, 00185 Rome, Italy
| | - Maddalena Grieco
- National Research Council-Institute of Nanotechnology (CNR Nanotec), c/o Ecotekne, University of Salento, Via Monteroni, 73100 Lecce, Italy; (M.G.); (A.L.C.); (A.B.); (C.C.); (G.G.); (L.M.)
| | - Carla Sappino
- Department of Chemistry, Sapienza University Rome, Pz.le A. Moro 5, 00185 Rome, Italy;
| | - Agostina Lina Capodilupo
- National Research Council-Institute of Nanotechnology (CNR Nanotec), c/o Ecotekne, University of Salento, Via Monteroni, 73100 Lecce, Italy; (M.G.); (A.L.C.); (A.B.); (C.C.); (G.G.); (L.M.)
| | - Sara Maria Giannitelli
- Department of Science and Technology for Sustainable Development and One Health, Università Campus Bio-Medico di Roma, 00128 Rome, Italy;
| | - Emanuele Mauri
- Department of Engineering, Università Campus Bio-Medico di Roma, 00128 Rome, Italy;
- Department of Chemistry, Materials and Chemical Engineering “G. Natta”, Politecnico di Milano, Piazza Leonardo da Vinci 32, 20133 Milan, Italy
| | - Alessio Bucciarelli
- National Research Council-Institute of Nanotechnology (CNR Nanotec), c/o Ecotekne, University of Salento, Via Monteroni, 73100 Lecce, Italy; (M.G.); (A.L.C.); (A.B.); (C.C.); (G.G.); (L.M.)
| | - Chiara Coricciati
- National Research Council-Institute of Nanotechnology (CNR Nanotec), c/o Ecotekne, University of Salento, Via Monteroni, 73100 Lecce, Italy; (M.G.); (A.L.C.); (A.B.); (C.C.); (G.G.); (L.M.)
- Department of Mathematics and Physics “Ennio De Giorgi”, University of Salento, Via Arnesano, 73100 Lecce, Italy
| | - Valeria de Turris
- Center for Life Nano- & Neuro- Science Italian Institute of Technology (IIT), 00161 Rome, Italy;
| | - Giuseppe Gigli
- National Research Council-Institute of Nanotechnology (CNR Nanotec), c/o Ecotekne, University of Salento, Via Monteroni, 73100 Lecce, Italy; (M.G.); (A.L.C.); (A.B.); (C.C.); (G.G.); (L.M.)
- Department of Mathematics and Physics “Ennio De Giorgi”, University of Salento, Via Arnesano, 73100 Lecce, Italy
| | - Lorenzo Moroni
- National Research Council-Institute of Nanotechnology (CNR Nanotec), c/o Ecotekne, University of Salento, Via Monteroni, 73100 Lecce, Italy; (M.G.); (A.L.C.); (A.B.); (C.C.); (G.G.); (L.M.)
- Department of Complex Tissue Regeneration, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, 6200 MD Maastricht, The Netherlands
| | - Barbara Cortese
- National Research Council-Institute of Nanotechnology (CNR Nanotec), c/o Edificio Fermi, University Sapienza, Pz.le Aldo Moro 5, 00185 Rome, Italy
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16
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Richbourg NR, Peppas NA. Structurally decoupled stiffness and solute transport in multi-arm poly(ethylene glycol) hydrogels. Biomaterials 2023; 301:122272. [PMID: 37573839 PMCID: PMC10785603 DOI: 10.1016/j.biomaterials.2023.122272] [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: 03/15/2023] [Revised: 08/01/2023] [Accepted: 08/07/2023] [Indexed: 08/15/2023]
Abstract
Synthetic hydrogels are widely used as artificial 3D environments for cell culture, facilitating the controlled study of cell-environment interactions. However, most hydrogels are limited in their ability to represent the physical properties of biological tissues because stiffness and solute transport properties in hydrogels are closely correlated. Resultingly, experimental investigations of cell-environment interactions in hydrogels are confounded by simultaneous changes in multiple physical properties. Here, we overcame this limitation by simultaneously manipulating four structural parameters to synthesize a library of multi-arm poly (ethylene glycol) (PEG) hydrogel formulations with robustly decoupled stiffness and solute transport. This structural design approach avoids chemical alterations or additions to the network that might have unanticipated effects on encapsulated cells. An algorithm created to statistically evaluate stiffness-transport decoupling within the dataset identified 46 of the 73 synthesized formulations as robustly decoupled. We show that the swollen polymer network model accurately predicts 11 out of 12 structure-property relationships, suggesting that this approach to decoupling stiffness and solute transport in hydrogels is fundamentally validated and potentially broadly applicable. Furthermore, the unprecedented control of hydrogel network structure provided by multi-arm PEG hydrogels confirmed several fundamental modeling assumptions. This study enables nuanced hydrogel design for uncompromised investigation of cell-environment interactions.
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Affiliation(s)
- Nathan R Richbourg
- Department of Biomedical Engineering, University of Texas, Austin, TX, 78712, USA.
| | - Nicholas A Peppas
- Department of Biomedical Engineering, University of Texas, Austin, TX, 78712, USA; McKetta Department of Chemical Engineering, University of Texas, Austin, TX, 78712, USA; Division of Molecular Therapeutics and Drug Delivery, College of Pharmacy, University of Texas, Austin, TX, 78712, USA; Departments of Surgery and Pediatrics, Dell Medical School, University of Texas, Austin, TX, 78712, USA.
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17
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Jung SA, Malyaran H, Demco DE, Manukanc A, Häser LS, Kučikas V, van Zandvoort M, Neuss S, Pich A. Fibrin-Dextran Hydrogels with Tunable Porosity and Mechanical Properties. Biomacromolecules 2023; 24:3972-3984. [PMID: 37574715 DOI: 10.1021/acs.biomac.3c00269] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2023]
Abstract
Hydrogels as scaffolds in tissue engineering have gained increasing attention in recent years. Natural hydrogels, e.g., collagen or fibrin, are limited by their weak mechanical properties and fast degradation, whereas synthetic hydrogels face issues with biocompatibility and biodegradation. Therefore, combining natural and synthetic polymers to design hydrogels with tunable mechanical stability and cell affinity for biomedical applications is of interest. By using fibrin with its excellent cell compatibility and dextran with controllable mechanical properties, a novel bio-based hydrogel can be formed. Here, we synthesized fibrin and dextran-methacrylate (MA)-based hydrogels with tailorable mechanical properties, controllable degradation, variable pore sizes, and ability to support cell proliferation. The hydrogels are formed through in situ gelation of fibrinogen and dextran-MA with thrombin and dithiothreitol. Swelling and nuclear magnetic resonance diffusometry measurements showed that the water uptake and mesh sizes of fabricated hydrogels decrease with increasing dextran-MA concentrations. Cell viability tests confirm that these hydrogels exhibit no cytotoxic effect.
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Affiliation(s)
- Shannon Anna Jung
- DWI-Leibniz Institute for Interactive Materials, RWTH Aachen University, Forckenbeckstraße 50, Aachen 52074, Germany
- Institute for Technical and Macromolecular Chemistry, RWTH Aachen University, Worringerweg 2, Aachen 52074, Germany
| | - Hanna Malyaran
- Helmholtz Institute for Biomedical Engineering, BioInterface Group, RWTH Aachen University, Pauwelsstrasse 20, Aachen 52074, Germany
- Interdisciplinary Centre for Clinical Research, RWTH Aachen University, Pauwelsstrasse 30, Aachen 52074, Germany
| | - Dan Eugen Demco
- DWI-Leibniz Institute for Interactive Materials, RWTH Aachen University, Forckenbeckstraße 50, Aachen 52074, Germany
| | - Anna Manukanc
- DWI-Leibniz Institute for Interactive Materials, RWTH Aachen University, Forckenbeckstraße 50, Aachen 52074, Germany
- Institute for Technical and Macromolecular Chemistry, RWTH Aachen University, Worringerweg 2, Aachen 52074, Germany
| | - Leonie Sophie Häser
- DWI-Leibniz Institute for Interactive Materials, RWTH Aachen University, Forckenbeckstraße 50, Aachen 52074, Germany
- Institute for Technical and Macromolecular Chemistry, RWTH Aachen University, Worringerweg 2, Aachen 52074, Germany
| | - Vytautas Kučikas
- Institute for Molecular Cardiovascular Research (IMCAR), RWTH Aachen University, Pauwelsstrasse 30, Aachen 52074, Germany
| | - Marc van Zandvoort
- Institute for Molecular Cardiovascular Research (IMCAR), RWTH Aachen University, Pauwelsstrasse 30, Aachen 52074, Germany
- Department of Genetics and Cell Biology, GROW, CARIM, MHeNS, Maastricht University, Maastricht 6200 MD, The Netherlands
| | - Sabine Neuss
- Helmholtz Institute for Biomedical Engineering, BioInterface Group, RWTH Aachen University, Pauwelsstrasse 20, Aachen 52074, Germany
- Institute of Pathology, RWTH Aachen University, Pauwelsstrasse 30, Aachen 52074, Germany
| | - Andrij Pich
- DWI-Leibniz Institute for Interactive Materials, RWTH Aachen University, Forckenbeckstraße 50, Aachen 52074, Germany
- Institute for Technical and Macromolecular Chemistry, RWTH Aachen University, Worringerweg 2, Aachen 52074, Germany
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18
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Mozipo EA, Galindo AN, Khachatourian JD, Harris CG, Dorogin J, Spaulding VR, Ford MR, Singhal M, Fogg KC, Hettiaratchi MH. Statistical Optimization of Hydrazone-Crosslinked Hyaluronic Acid Hydrogels for Protein Delivery. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.07.14.549125. [PMID: 37503070 PMCID: PMC10370027 DOI: 10.1101/2023.07.14.549125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/29/2023]
Abstract
Hydrazone-crosslinked hydrogels are attractive protein delivery vehicles for regenerative medicine. However, each regenerative medicine application requires unique hydrogel properties to achieve an ideal outcome. The properties of a hydrogel can be impacted by numerous factors involved in its fabrication. We used design of experiments (DoE) statistical modeling to efficiently optimize the physicochemical properties of a hyaluronic acid (HA) hydrazone-crosslinked hydrogel for protein delivery for bone regeneration. We modified HA with either adipic acid dihydrazide (HA-ADH) or aldehyde (HA-Ox) functional groups and used DoE to evaluate the interactions of three input variables, the molecular weight of HA (40 or 100 kDa), the concentration of HA-ADH (1-3% w/v), and the concentration of HA-Ox (1-3% w/v), on three output responses, gelation time, compressive modulus, and hydrogel stability over time. We identified 100 kDa HA-ADH3.0HA-Ox2.33 as an optimal hydrogel that met all of our design criteria, including displaying a gelation time of 3.7 minutes, compressive modulus of 62.1 Pa, and minimal mass change over 28 days. For protein delivery, we conjugated affinity proteins called affibodies that were specific to the osteogenic protein bone morphogenetic protein-2 (BMP-2) to HA hydrogels and demonstrated that our platform could control the release of BMP-2 over 28 days. Ultimately, our approach demonstrates the utility of DoE for optimizing hydrazone-crosslinked HA hydrogels for protein delivery.
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Affiliation(s)
- Esther A. Mozipo
- Phil and Penny Knight Campus for Accelerating Scientific Impact, University of Oregon, Eugene, OR
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, OR
| | - Alycia, N. Galindo
- Phil and Penny Knight Campus for Accelerating Scientific Impact, University of Oregon, Eugene, OR
| | - Jenna D. Khachatourian
- Phil and Penny Knight Campus for Accelerating Scientific Impact, University of Oregon, Eugene, OR
- Department of Human Physiology, University of Oregon, Eugene, OR
| | - Conor G. Harris
- School of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, OR
| | - Jonathan Dorogin
- Phil and Penny Knight Campus for Accelerating Scientific Impact, University of Oregon, Eugene, OR
| | | | - Madeleine R. Ford
- Phil and Penny Knight Campus for Accelerating Scientific Impact, University of Oregon, Eugene, OR
- Department of Human Physiology, University of Oregon, Eugene, OR
| | - Malvika Singhal
- Phil and Penny Knight Campus for Accelerating Scientific Impact, University of Oregon, Eugene, OR
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, OR
- Institute of Molecular Biology, University of Oregon, Eugene, OR
| | - Kaitlin C. Fogg
- School of Chemical, Biological, and Environmental Engineering, Oregon State University, Corvallis, OR
| | - Marian H. Hettiaratchi
- Phil and Penny Knight Campus for Accelerating Scientific Impact, University of Oregon, Eugene, OR
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, OR
- Institute of Molecular Biology, University of Oregon, Eugene, OR
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19
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Yu C, Naeem A, Liu Y, Guan Y. Ellagic Acid Inclusion Complex-Loaded Hydrogels as an Efficient Controlled Release System: Design, Fabrication and In Vitro Evaluation. J Funct Biomater 2023; 14:jfb14050278. [PMID: 37233388 DOI: 10.3390/jfb14050278] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Revised: 05/06/2023] [Accepted: 05/15/2023] [Indexed: 05/27/2023] Open
Abstract
Oxidants play a crucial role in the development of oxidative stress, which is linked to disease progression. Ellagic acid is an effective antioxidant with applications in the treatment and prevention of several diseases, since it neutralizes free radicals and reduces oxidative stress. However, it has limited application due to its poor solubility and oral bioavailability. Since ellagic acid is hydrophobic, it is difficult to load it directly into hydrogels for controlled release applications. Therefore, the purpose of this study was to first prepare inclusion complexes of ellagic acid (EA) with hydroxypropyl-β-cyclodextrin and then load them into carbopol-934-grafted-2-acrylamido-2-methyl-1-propane sulfonic acid (CP-g-AMPS) hydrogels for orally controlled drug delivery. Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), and differential scanning calorimetry (DSC) were used to validate ellagic acid inclusion complexes and hydrogels. There was slightly higher swelling and drug release at pH 1.2 (42.20% and 92.13%) than at pH 7.4 (31.61% and 77.28%), respectively. Hydrogels had high porosity (88.90%) and biodegradation (9.2% per week in phosphate-buffered saline). Hydrogels were tested for their antioxidant properties in vitro against 2,2-diphenyl-1-picrylhydrazyl (DPPH) and 2,2'-azino-bis (3-ethylbenzothiazoline-6-sulfonic acid) (ABTS). Additionally, the antibacterial activity of hydrogels was demonstrated against Gram-positive bacterial strains (Staphylococcus aureus and Escherichia coli) and Gram-negative bacterial strains (Pseudomonas aeruginosa).
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Affiliation(s)
- Chengqun Yu
- Key Laboratory of Modern Preparation of Traditional Chinese Medicines, Ministry of Education, Jiangxi University of Chinese Medicine, Nanchang 330004, China
| | - Abid Naeem
- Key Laboratory of Modern Preparation of Traditional Chinese Medicines, Ministry of Education, Jiangxi University of Chinese Medicine, Nanchang 330004, China
| | - Yali Liu
- Key Laboratory of Pharmacodynamics and Safety Evaluation, Health Commission of Jiangxi Province, 1688 Meiling Road, Nanchang 330006, China
- Key Laboratory of Pharmacodynamics and Quality Evaluation on Anti-Inflammatory Chinese Herbs, Jiangxi Administration of Traditional Chinese Medicine, Nanchang Medical College, 1688 Meiling Road, Nanchang 330006, China
| | - Yongmei Guan
- Key Laboratory of Modern Preparation of Traditional Chinese Medicines, Ministry of Education, Jiangxi University of Chinese Medicine, Nanchang 330004, China
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20
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Thijssen Q, Quaak A, Toombs J, De Vlieghere E, Parmentier L, Taylor H, Van Vlierberghe S. Volumetric Printing of Thiol-Ene Photo-Cross-Linkable Poly(ε-caprolactone): A Tunable Material Platform Serving Biomedical Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2210136. [PMID: 36827642 DOI: 10.1002/adma.202210136] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 02/10/2023] [Indexed: 05/12/2023]
Abstract
Current thoroughly described biodegradable and cross-linkable polymers mainly rely on acrylate cross-linking. However, despite the swift cross-linking kinetics of acrylates, the concomitant brittleness of the resulting materials limits their applicability. Here, photo-cross-linkable poly(ε-caprolactone) networks through orthogonal thiol-ene chemistry are introduced. The step-growth polymerized networks are tunable, predictable by means of the rubber elasticity theory and it is shown that their mechanical properties are significantly improved over their acrylate cross-linked counterparts. Tunability is introduced to the materials, by altering Mc (or the molar mass between cross-links), and its effect on the thermal properties, mechanical strength and degradability of the materials is evaluated. Moreover, excellent volumetric printability is illustrated and the smallest features obtained via volumetric 3D-printing to date are reported, for thiol-ene systems. Finally, by means of in vitro and in vivo characterization of 3D-printed constructs, it is illustrated that the volumetrically 3D-printed materials are biocompatible. This combination of mechanical stability, tunability, biocompatibility, and rapid fabrication by volumetric 3D-printing charts a new path toward bedside manufacturing of biodegradable patient-specific implants.
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Affiliation(s)
- Quinten Thijssen
- Polymer Chemistry and Biomaterials Group, Centre of Macromolecular Chemistry, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, Ghent, 9000, Belgium
| | - Astrid Quaak
- Polymer Chemistry and Biomaterials Group, Centre of Macromolecular Chemistry, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, Ghent, 9000, Belgium
| | - Joseph Toombs
- Department of Mechanical Engineering, University of California, Berkeley, 6159 Etcheverry Hall, Berkeley, CA, 94720-1740, USA
| | - Elly De Vlieghere
- Polymer Chemistry and Biomaterials Group, Centre of Macromolecular Chemistry, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, Ghent, 9000, Belgium
| | - Laurens Parmentier
- Polymer Chemistry and Biomaterials Group, Centre of Macromolecular Chemistry, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, Ghent, 9000, Belgium
| | - Hayden Taylor
- Department of Mechanical Engineering, University of California, Berkeley, 6159 Etcheverry Hall, Berkeley, CA, 94720-1740, USA
| | - Sandra Van Vlierberghe
- Polymer Chemistry and Biomaterials Group, Centre of Macromolecular Chemistry, Department of Organic and Macromolecular Chemistry, Ghent University, Krijgslaan 281 S4, Ghent, 9000, Belgium
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21
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Hewawasam RS, Blomberg R, Šerbedžija P, Magin CM. Chemical Modification of Human Decellularized Extracellular Matrix for Incorporation into Phototunable Hybrid-Hydrogel Models of Tissue Fibrosis. ACS APPLIED MATERIALS & INTERFACES 2023; 15:15071-15083. [PMID: 36917510 PMCID: PMC11177228 DOI: 10.1021/acsami.2c18330] [Citation(s) in RCA: 16] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Tissue fibrosis remains a serious health condition with high morbidity and mortality rates. There is a critical need to engineer model systems that better recapitulate the spatial and temporal changes in the fibrotic extracellular microenvironment and enable study of the cellular and molecular alterations that occur during pathogenesis. Here, we present a process for chemically modifying human decellularized extracellular matrix (dECM) and incorporating it into a dynamically tunable hybrid-hydrogel system containing a poly(ethylene glycol)-α methacrylate (PEGαMA) backbone. Following modification and characterization, an off-stoichiometry thiol-ene Michael addition reaction resulted in hybrid-hydrogels with mechanical properties that could be tuned to recapitulate many healthy tissue types. Next, photoinitiated, free-radical homopolymerization of excess α-methacrylates increased crosslinking density and hybrid-hydrogel elastic modulus to mimic a fibrotic microenvironment. The incorporation of dECM into the PEGαMA hydrogel decreased the elastic modulus and, relative to fully synthetic hydrogels, increased the swelling ratio, the average molecular weight between crosslinks, and the mesh size of hybrid-hydrogel networks. These changes were proportional to the amount of dECM incorporated into the network. Dynamic stiffening increased the elastic modulus and decreased the swelling ratio, average molecular weight between crosslinks, and the mesh size of hybrid-hydrogels, as expected. Stiffening also activated human fibroblasts, as measured by increases in average cellular aspect ratio (1.59 ± 0.02 to 2.98 ± 0.20) and expression of α-smooth muscle actin (αSMA). Fibroblasts expressing αSMA increased from 25.8 to 49.1% upon dynamic stiffening, demonstrating that hybrid-hydrogels containing human dECM support investigation of dynamic mechanosensing. These results improve our understanding of the biomolecular networks formed within hybrid-hydrogels: this fully human phototunable hybrid-hydrogel system will enable researchers to control and decouple the biochemical changes that occur during fibrotic pathogenesis from the resulting increases in stiffness to study the dynamic cell-matrix interactions that perpetuate fibrotic diseases.
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Affiliation(s)
- Rukshika S Hewawasam
- Department of Bioengineering, University of Colorado, Denver|Anschutz Medical Campus, 2115 Scranton Street, Suite 3010, Aurora, Colorado 80045-2559, United States
| | - Rachel Blomberg
- Department of Bioengineering, University of Colorado, Denver|Anschutz Medical Campus, 2115 Scranton Street, Suite 3010, Aurora, Colorado 80045-2559, United States
| | - Predrag Šerbedžija
- Department of Bioengineering, University of Colorado, Denver|Anschutz Medical Campus, 2115 Scranton Street, Suite 3010, Aurora, Colorado 80045-2559, United States
| | - Chelsea M Magin
- Department of Bioengineering, University of Colorado, Denver|Anschutz Medical Campus, 2115 Scranton Street, Suite 3010, Aurora, Colorado 80045-2559, United States
- Department of Pediatrics, University of Colorado, Anschutz Medical Campus, 2115 Scranton Street, Suite 3010, Aurora, Colorado 80045-2559, United States
- Division of Pulmonary Sciences and Critical Care Medicine, Department of Medicine, University of Colorado, Anschutz Medical Campus, 2115 Scranton Street, Suite 3010, Aurora, Colorado 80045-2559, United States
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22
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Natesan PV, Banerjee SS, Arunachalakasi A, Swaminathan R. Analysis of diffusion of plant metabolites from polyethylene glycol hydrogels using free volume theory. Proc Inst Mech Eng H 2023:9544119231162772. [PMID: 36939171 DOI: 10.1177/09544119231162772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2023]
Abstract
The present work aims to comprehensively analyze the diffusion of plant metabolites from the polyethylene glycol (PEG) hydrogels for controlled release applications. For this study, a mathematical model based on free volume theory has been utilized to simulate the diffusion of low molecular weight plant metabolites. The results demonstrate that the mesh size of the crosslinked network, thereby the diffusion coefficient of the natural compound can be computed using the current framework. The proposed model has also been validated using the experimental data. The diffusion period has been observed to vary within a wide range of 3.42 h for Cinnamaldehyde to 49.25 h for Grandinin. An empirical parametric relationship between the diffusion time and molecular weight of both the hydrogels and natural compounds is established. It appears that the reported modeling approach will be clinically useful for improving the design of the sustained drug delivery systems.
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Affiliation(s)
- Pooja Vardhini Natesan
- Biomedical Engineering Group, Department of Applied Mechanics, Indian Institute of Technology Madras, Chennai, India
| | - Shib Sundar Banerjee
- Biomedical Engineering Group, Department of Applied Mechanics, Indian Institute of Technology Madras, Chennai, India
| | - Arockiarajan Arunachalakasi
- Solid Mechanics Division, Department of Applied Mechanics, Indian Institute of Technology Madras, Chennai, India
| | - Ramakrishnan Swaminathan
- Biomedical Engineering Group, Department of Applied Mechanics, Indian Institute of Technology Madras, Chennai, India
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23
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Hu Z, Liu D, Wang M, Yu C, Han Z, Xu M, Yue W, Nie G. β-Alanine enhancing the crosslink of chitosan/poly-(γ-glutamic acid) hydrogel for a potential alkaline-adapted wound dressing. Int J Biol Macromol 2023; 231:123157. [PMID: 36649867 DOI: 10.1016/j.ijbiomac.2023.123157] [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: 11/05/2022] [Revised: 12/23/2022] [Accepted: 01/02/2023] [Indexed: 01/15/2023]
Abstract
Tiny crosslink in chitosan (CS)/poly-(γ-glutamic acid) (γ-PGA) hydrogel leads to some disadvantages including low mechanical strength and high swelling. To enhance the crosslink of CS/γ-PGA hydrogel, amino acid (AA) was introduced to remove the drawbacks. The results indicated that AA can dramatically increase the crosslink and mechanical properties of CS/γ-PGA hydrogel, and AA chain length and concentration have a drastic effect on them. Particularly, 0.5 % β-Alanine (β-Ala) decreased the hydrogel by 70 % in porosity, 52 % in water solubility, and 30 % in swelling, but increased by 2.2-fold in elastic modulus, 2.08-fold in stress, and 1.53-fold in water retention. The porosity of the hydrogel correlates positively with the elastic modulus but negatively with the crosslinking degree. The effect of pH on CS/β-Ala/γ-PGA hydrogel was investigated in the load and release of benzalkonium chlorides (BAC). β-Ala strengthened pH response of the hydrogel in BAC load and release. The loading capacity increased with pH value, and 0.5 % β-Ala increased the hydrogel by 1.25-fold in the release capacity in alkaline environment, suggesting a good buffering effect of β-Ala on pH variation to accelerate the transportation of BAC. CS/β-Ala/γ-PGA hydrogel will be competently applied as a potential material for wound dressing in alkaline environment.
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Affiliation(s)
- Ziwei Hu
- College of biological and food engineering, Anhui Polytechnic University, 241000 Wuhu, China
| | - Dandan Liu
- College of biological and food engineering, Anhui Polytechnic University, 241000 Wuhu, China
| | - Mengmeng Wang
- College of biological and food engineering, Anhui Polytechnic University, 241000 Wuhu, China
| | - Chenrui Yu
- College of biological and food engineering, Anhui Polytechnic University, 241000 Wuhu, China
| | - Zhenxing Han
- College of biological and food engineering, Anhui Polytechnic University, 241000 Wuhu, China
| | - Maodong Xu
- School of chemical and environmental engineering, Anhui Polytechnic University, 241000 Wuhu, China
| | - Wenjin Yue
- School of chemical and environmental engineering, Anhui Polytechnic University, 241000 Wuhu, China.
| | - Guangjun Nie
- College of biological and food engineering, Anhui Polytechnic University, 241000 Wuhu, China.
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24
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Qian Q, Song J, Chen C, Pu Q, Liu X, Wang H. Recent advances in hydrogels for preventing tumor recurrence. Biomater Sci 2023; 11:2678-2692. [PMID: 36877511 DOI: 10.1039/d3bm00003f] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
Malignant tumors remain a high-risk disease with high mortality all over the world. Among all the cancer treatments, surgery is the primary approach in the clinical treatment of tumors. However, tumor invasion and metastasis pose challenges for complete tumor resection, accompanied by high recurrence rates and reduced quality of life. Hence, there is an urgent need to explore effective adjuvant therapies to prevent postoperative tumor recurrence and relieve the pain of the patients. Nowadays, the booming local drug delivery systems which can be applied as postoperative adjuvant therapies have aroused people's attention, along with the rapid development in the pharmaceutical and biological materials fields. Hydrogels are a kind of unique carrier with prominent biocompatibility among a variety of biomaterials. Due to their high similarity to human tissues, hydrogels which load drugs/growth factors can prevent rejection reactions and promote wound healing. In addition, hydrogels are able to cover the postoperative site and maintain sustained drug release for the prevention of tumor recurrence. In this review, we survey controlled drug delivery hydrogels such as implantable, injectable and sprayable formulations and summarize the properties required for hydrogels used as postoperative adjuvant therapies. The opportunities and challenges in the design and clinical application of these hydrogels are also elaborated.
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Affiliation(s)
- Qiuhui Qian
- National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China.
| | - Jie Song
- National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China.
| | - Chen Chen
- National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China.
| | - Qian Pu
- National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China.
| | - Xingcheng Liu
- National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China.
| | - Huili Wang
- National and Local Joint Engineering Laboratory of Municipal Sewage Resource Utilization Technology, School of Environmental Science and Engineering, Suzhou University of Science and Technology, Suzhou 215009, China.
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25
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Zhu Y, Haghniaz R, Hartel MC, Guan S, Bahari J, Li Z, Baidya A, Cao K, Gao X, Li J, Wu Z, Cheng X, Li B, Emaminejad S, Weiss PS, Khademhosseini A. A Breathable, Passive-Cooling, Non-Inflammatory, and Biodegradable Aerogel Electronic Skin for Wearable Physical-Electrophysiological-Chemical Analysis. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2209300. [PMID: 36576895 PMCID: PMC10006339 DOI: 10.1002/adma.202209300] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2022] [Revised: 12/20/2022] [Indexed: 06/17/2023]
Abstract
Real-time monitoring of human health can be significantly improved by designing novel electronic skin (E-skin) platforms that mimic the characteristics and sensitivity of human skin. A high-quality E-skin platform that can simultaneously monitor multiple physiological and metabolic biomarkers without introducing skin discomfort or irritation is an unmet medical need. Conventional E-skins are either monofunctional or made from elastomeric films that do not include key synergistic features of natural skin, such as multi-sensing, breathability, and thermal management capabilities in a single patch. Herein, a biocompatible and biodegradable E-skin patch based on flexible gelatin methacryloyl aerogel (FGA) for non-invasive and continuous monitoring of multiple biomarkers of interest is engineered and demonstrated. Taking advantage of cryogenic temperature treatment and slow polymerization, FGA is fabricated with a highly interconnected porous structure that displays good flexibility, passive-cooling capabilities, and ultra-lightweight properties that make it comfortable to wear for long periods of time. It also provides numerous permeable capillary channels for thermal-moisture transfer, ensuring its excellent breathability. Therefore, the engineered FGA-based E-skin can simultaneously monitor body temperature, hydration, and biopotentials via electrophysiological sensors and detect glucose, lactate, and alcohol levels via electrochemical sensors. This work offers a previously unexplored materials strategy for next-generation E-skin platforms with superior practicality.
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Affiliation(s)
- Yangzhi Zhu
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90064, USA
| | - Reihaneh Haghniaz
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90064, USA
| | - Martin C Hartel
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90064, USA
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Shenghan Guan
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90064, USA
- Mork Family Department of Chemical Engineering & Materials Science, Viterbi School of Engineering, University of Southern California, Los Angeles, CA, 90007, USA
| | - Jamal Bahari
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90064, USA
| | - Zijie Li
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90064, USA
- Mork Family Department of Chemical Engineering & Materials Science, Viterbi School of Engineering, University of Southern California, Los Angeles, CA, 90007, USA
| | - Avijit Baidya
- Department of Chemical and Biomolecular Engineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Ke Cao
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37830, USA
| | - Xiaoxiang Gao
- Department of Nanoengineering, University of California, San Diego, La Jolla, CA, 92093, USA
| | - Jinghang Li
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90064, USA
| | - Zhuohong Wu
- Department of Nanoengineering, University of California, San Diego, La Jolla, CA, 92093, USA
| | - Xuanbing Cheng
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Bingbing Li
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90064, USA
- Department of Manufacturing Systems Engineering and Management, California State University Northridge, Northridge, CA, 91330, USA
| | - Sam Emaminejad
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
- Department of Electrical and Computer Engineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Paul S Weiss
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
- Department of Chemistry and Biochemistry, Department of Materials Science and Engineering and California NanoSystems Institute, University of California Los Angeles, Los Angeles, CA, 90095, USA
| | - Ali Khademhosseini
- Terasaki Institute for Biomedical Innovation, Los Angeles, CA, 90064, USA
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26
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Tran TM, de Alaniz JR. Controlled Synthesis of a Homopolymer Network Using a Well-Defined Single-Component Diels-Alder Cyclopentadiene Monomer. J Am Chem Soc 2023; 145:3462-3469. [PMID: 36722948 DOI: 10.1021/jacs.2c11416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Cyclopentadiene is known for its high reactivity and propensity to dimerize, making monomer synthesis and polymerization notoriously challenging. In fact, despite its long history and compelling chemistry, only two reports have appeared in the literature since the first attempt to homopolymerize cyclopentadiene by Staudinger in 1926. Herein, we present a strategy not only to synthesize, isolate, and homopolymerize a well-defined tetracyclopentadiene monomer but also to de-cross-link the network homopolymer. Mechanical properties are also investigated, including creep-recovery, shape memory, and tensile behaviors. Interestingly, the tensile test reflects a tough and elastic material, in contrast to prior Cp-based homopolymer networks. This work provides a versatile platform to access and study new cyclopentadiene-based and better-defined homopolymer networks with potential applications ranging from shape memory polymers to degradable thermosets.
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Affiliation(s)
- Thi M Tran
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
| | - Javier Read de Alaniz
- Department of Chemistry and Biochemistry, University of California, Santa Barbara, California 93106, United States
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27
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Delaey J, Parmentier L, Pyl L, Brancart J, Adriaensens P, Dobos A, Dubruel P, Van Vlierberghe S. Solid-State Crosslinkable, Shape-Memory Polyesters Serving Tissue Engineering. Macromol Rapid Commun 2023; 44:e2200955. [PMID: 36755500 DOI: 10.1002/marc.202200955] [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: 01/17/2023] [Indexed: 02/10/2023]
Abstract
Acrylate-endcapped urethane-based precursors constituting a poly(D,L-lactide)/poly(ε-caprolactone) (PDLLA/PCL) random copolymer backbone are synthesized with linear and star-shaped architectures and various molar masses. It is shown that the glass transition and thus the actuation temperature could be tuned by varying the monomer content (0-8 wt% ε-caprolactone, Tg,crosslinked = 10-42 °C) in the polymers. The resulting polymers are analyzed for their physico-chemical properties and viscoelastic behavior (G'max = 9.6-750 kPa). The obtained polymers are subsequently crosslinked and their shape-memory properties are found to be excellent (Rr = 88-100%, Rf = 78-99.5%). Moreover, their potential toward processing via various additive manufacturing techniques (digital light processing, two-photon polymerization and direct powder extrusion) is evidenced with retention of their shape-memory effect. Additionally, all polymers are found to be biocompatible in direct contact in vitro cell assays using primary human foreskin fibroblasts (HFFs) through MTS assay (up to ≈100% metabolic activity relative to TCP) and live/dead staining (>70% viability).
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Affiliation(s)
- Jasper Delaey
- Polymer Chemistry & Biomaterials group (PBM), Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Ghent, 9000, Belgium
| | - Laurens Parmentier
- Polymer Chemistry & Biomaterials group (PBM), Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Ghent, 9000, Belgium
| | - Lincy Pyl
- Department of Mechanics of Materials and Constructions (MeMC), Vrije Universiteit Brussel (VUB), Brussels, 1050, Belgium
| | - Joost Brancart
- Physical Chemistry and Polymer Science (FYSC), Vrije Universiteit Brussel, Brussels, 1050, Belgium
| | - Peter Adriaensens
- Applied and Analytical Chemistry, Institute for Materials Research, Hasselt University, Diepenbeek, 3590, Belgium
| | - Agnes Dobos
- Polymer Chemistry & Biomaterials group (PBM), Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Ghent, 9000, Belgium.,BIO INX BV, Tech Lane 66, Zwijnaarde, 9052, Belgium
| | - Peter Dubruel
- Polymer Chemistry & Biomaterials group (PBM), Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Ghent, 9000, Belgium
| | - Sandra Van Vlierberghe
- Polymer Chemistry & Biomaterials group (PBM), Centre of Macromolecular Chemistry (CMaC), Department of Organic and Macromolecular Chemistry, Ghent University, Ghent, 9000, Belgium.,BIO INX BV, Tech Lane 66, Zwijnaarde, 9052, Belgium
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28
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PEO-PU block copolymer membrane for air dehumidification. Sep Purif Technol 2023. [DOI: 10.1016/j.seppur.2023.123383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
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29
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Richbourg NR, Peppas NA. Solute diffusion and partitioning in multi-arm poly(ethylene glycol) hydrogels. J Mater Chem B 2023; 11:377-388. [PMID: 36511476 DOI: 10.1039/d2tb02004a] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
Abstract
Controlling solute transport in hydrogels is critical for numerous chemical separation applications, tissue engineering, and drug delivery systems. In previous review work, we have pointed out that proposed theoretical models and associated experiments tend to oversimplify the influence of the hydrogel structure on solute transport by addressing only the effects of the polymer volume fraction and mesh size of the networks on solute transport. Here, we reexamine these models by experimenting with a library of multi-arm poly(ethylene glycol) (PEG) hydrogels with simultaneous variations in four independent structural parameters. Standardized, high-throughput fluorescence recovery after photobleaching (FRAP) experiments in hydrogels characterize size-dependent solute diffusion and partitioning in each hydrogel formulation. Solute diffusivity dependence on junction functionality shows an influence from network geometry that is not addressed by mesh size-based models, experimentally validating the use of the geometry-responsive mesh radius in solute diffusivity modeling. Furthermore, the Richbourg-Peppas swollen polymer network (SPN) model accurately predicts how three of the four structural parameters affect solute diffusivity in hydrogels. Comparison with the large pore effective medium (LPEM) model showed that the SPN model better predicts solute size and hydrogel structure effects on diffusivity. This study provides a framework for investigating solute transport in hydrogels that will continue to improve hydrogel design for tissue engineering and drug delivery.
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Affiliation(s)
- Nathan R Richbourg
- Department of Biomedical Engineering, University of Texas, Austin, TX, 78712, USA.
| | - Nicholas A Peppas
- Department of Biomedical Engineering, University of Texas, Austin, TX, 78712, USA. .,McKetta Department of Chemical Engineering, University of Texas, Austin, TX, 78712, USA.,Division of Molecular Therapeutics and Drug Delivery, College of Pharmacy, University of Texas, Austin, TX, 78712, USA.,Departments of Surgery and Pediatrics, Dell Medical School, University of Texas, Austin, TX, 78712, USA
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30
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Kainz MP, Greiner A, Hinrichsen J, Kolb D, Comellas E, Steinmann P, Budday S, Terzano M, Holzapfel GA. Poro-viscoelastic material parameter identification of brain tissue-mimicking hydrogels. Front Bioeng Biotechnol 2023; 11:1143304. [PMID: 37101751 PMCID: PMC10123293 DOI: 10.3389/fbioe.2023.1143304] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 03/27/2023] [Indexed: 04/28/2023] Open
Abstract
Understanding and characterizing the mechanical and structural properties of brain tissue is essential for developing and calibrating reliable material models. Based on the Theory of Porous Media, a novel nonlinear poro-viscoelastic computational model was recently proposed to describe the mechanical response of the tissue under different loading conditions. The model contains parameters related to the time-dependent behavior arising from both the viscoelastic relaxation of the solid matrix and its interaction with the fluid phase. This study focuses on the characterization of these parameters through indentation experiments on a tailor-made polyvinyl alcohol-based hydrogel mimicking brain tissue. The material behavior is adjusted to ex vivo porcine brain tissue. An inverse parameter identification scheme using a trust region reflective algorithm is introduced and applied to match experimental data obtained from the indentation with the proposed computational model. By minimizing the error between experimental values and finite element simulation results, the optimal constitutive model parameters of the brain tissue-mimicking hydrogel are extracted. Finally, the model is validated using the derived material parameters in a finite element simulation.
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Affiliation(s)
- Manuel P. Kainz
- Institute of Biomechanics, Graz University of Technology, Graz, Austria
| | - Alexander Greiner
- Department Mechanical Engineering, Institute of Applied Mechanics, Friedrich Alexander-University Erlangen-Nürnberg, Erlangen, Germany
| | - Jan Hinrichsen
- Department Mechanical Engineering, Institute of Applied Mechanics, Friedrich Alexander-University Erlangen-Nürnberg, Erlangen, Germany
| | - Dagmar Kolb
- Center for Medical Research, Gottfried Schatz Research Center, Core Facility Ultrastructure Analysis, Medical University of Graz, Graz, Austria
- Division of Cell Biology, Histology and Embryology, Gottfried Schatz Research Center, Medical University of Graz, Graz, Austria
| | - Ester Comellas
- Department of Physics, Serra Húnter Fellow, Universitat Politècnica de Catalunya (UPC), Barcelona, Spain
| | - Paul Steinmann
- Department Mechanical Engineering, Institute of Applied Mechanics, Friedrich Alexander-University Erlangen-Nürnberg, Erlangen, Germany
- Glasgow Computational Engineering Centre, University of Glasgow, Glasgow, United Kingdom
| | - Silvia Budday
- Department Mechanical Engineering, Institute of Applied Mechanics, Friedrich Alexander-University Erlangen-Nürnberg, Erlangen, Germany
| | - Michele Terzano
- Institute of Biomechanics, Graz University of Technology, Graz, Austria
| | - Gerhard A. Holzapfel
- Institute of Biomechanics, Graz University of Technology, Graz, Austria
- Department of Structural Engineering, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
- *Correspondence: Gerhard A. Holzapfel,
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31
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Lin J, Yang H, Zhang Y, Zou F, He H, Xie W, Zou Z, Liu R, Xu Q, Zhang J, Zhong G, Li Y, Tang Z, Deng Y, Cai S, Wang L, Huang Y, Zhuo Y, Jiang X, Zhong W. Ferrocene-Based Polymeric Nanoparticles Carrying Doxorubicin for Oncotherapeutic Combination of Chemotherapy and Ferroptosis. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2205024. [PMID: 36398604 DOI: 10.1002/smll.202205024] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 11/01/2022] [Indexed: 06/16/2023]
Abstract
Mono-chemotherapy has significant side effects and unsatisfactory efficacy, limiting its clinical application. Therefore, a combination of multiple treatments is becoming more common in oncotherapy. Chemotherapy combined with the induction of ferroptosis is a potential new oncotherapy. Furthermore, polymeric nanoparticles (NPs) can improve the antitumor efficacy and decrease the toxicity of drugs. Herein, a polymeric NP, mPEG-b-PPLGFc@Dox, is synthesized to decrease the toxicity of doxorubicin (Dox) and enhance the efficacy of chemotherapy by combining it with the induction of ferroptosis. First, mPEG-b-PPLGFc@Dox is oxidized by endogenous H2 O2 and releases Dox, which leads to an increase of H2 O2 by breaking the redox balance. The Fe(II) group of ferrocene converts H2 O2 into ·OH, inducing subsequent ferroptosis. Furthermore, glutathione peroxidase 4, a biomarker of ferroptosis, is suppressed and the lipid peroxidation level is elevated in cells incubated with mPEG-b-PPLGFc@Dox compared to those treated with Dox alone, indicating ferroptosis induction by mPEG-b-PPLGFc@Dox. In vivo, the antitumor efficacy of mPEG-b-PPLGFc@Dox is higher than that of free Dox. Moreover, the loss of body weight in mice treated mPEG-b-PPLGFc@Dox is lower than in those treated with free Dox, indicating that mPEG-b-PPLGFc@Dox is less toxic than free Dox. In conclusion, mPEG-b-PPLGFc@Dox not only has higher antitumor efficacy but it reduces the damage to normal tissue.
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Affiliation(s)
- Jundong Lin
- Department of Urology, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China
| | - Huikang Yang
- Department of Radiology, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China
| | - Yixun Zhang
- Department of Urology, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China
| | - Fen Zou
- Department of Urology, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China
| | - Huichan He
- Urology Key Laboratory of Guangdong Province, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, 510230, China
| | - Wenjie Xie
- Department of Urology, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China
| | - Zhihao Zou
- Urology Key Laboratory of Guangdong Province, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, 510230, China
| | - Ren Liu
- Urology Key Laboratory of Guangdong Province, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, 510230, China
| | - Qianfeng Xu
- Department of Urology, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China
| | - Jie Zhang
- Shenzhen Center for Disease Control and Prevention, Shenzhen, 518000, China
| | - Guowei Zhong
- Department of Urology, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China
| | - Yuejiao Li
- Department of Urology, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China
| | - ZhenFeng Tang
- Urology Key Laboratory of Guangdong Province, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, 510230, China
| | - Yulin Deng
- Urology Key Laboratory of Guangdong Province, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, 510230, China
| | - Shanghua Cai
- Urology Key Laboratory of Guangdong Province, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, 510230, China
| | - Linyao Wang
- Department of Urology, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China
| | - Yugang Huang
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, The NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou, 510180, China
| | - Yangjia Zhuo
- Department of Urology, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China
| | - Xinqing Jiang
- Department of Radiology, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China
| | - Weide Zhong
- Department of Urology, The Second Affiliated Hospital, School of Medicine, South China University of Technology, Guangzhou, 510180, China
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32
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Yu C, Chen X, Zhu W, Li L, Peng M, Zhong Y, Naeem A, Zang Z, Guan Y. Synthesis of Gallic Acid-Loaded Chitosan-Grafted-2-Acrylamido-2-Methylpropane Sulfonic Acid Hydrogels for Oral Controlled Drug Delivery: In Vitro Biodegradation, Antioxidant, and Antibacterial Effects. Gels 2022; 8:gels8120806. [PMID: 36547330 PMCID: PMC9777532 DOI: 10.3390/gels8120806] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2022] [Revised: 12/04/2022] [Accepted: 12/07/2022] [Indexed: 12/14/2022] Open
Abstract
In this study, chitosan (CS) and 2-acrylamido-2-methylpropane sulfonic acid (AMPS)-based hydrogels were formulated by the free radical polymerization technique for the controlled release of gallic acid. Fourier transform infrared spectroscopy (FTIR) confirmed the successful preparation and loading of gallic acid within the hydrogel network. Differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) confirmed the increased thermal stability of the hydrogels following the crosslinking and polymerization of chitosan and AMPS. In X-ray diffraction analysis (XRD), the crystallinity of the raw materials decreased, indicating strong crosslinking of the reagents and the formation of a new polymeric network of hydrogels. Scanning electron microscopy (SEM) revealed that the hydrogel had a rough, dense, and porous surface, which is consistent with the highly polymerized composition of the hydrogel. After 48 h, the hydrogels exhibited higher swelling at pH 1.2 (swelling ratio of 19.93%) than at pH 7.4 (swelling ratio of 15.65%). The drug release was analyzed using ultraviolet-visible (UV-Vis) spectrophotometer and demonstrated that after 48 h, gallic acid release was maximum at pH 1.2 (85.27%) compared to pH 7.4 (75.19%). The percent porosity (78.36%) and drug loading increased with the increasing concentration of chitosan and AMPS, while a decrease was observed with the increasing concentration of ethylene glycol dimethyl methacrylate (EGDMA). Crosslinking of the hydrogels increased with concentrations of chitosan and EGDMA but decreased with AMPS. In vitro studies demonstrated that the developed hydrogels were biodegradable (8.6% degradation/week) and had antimicrobial (zone of inhibition of 21 and 16 mm against Gram-positive bacteria Escherichia coli and Staphylococcus aureus as well as 13 mm against Gram-negative bacteria Pseudomonas aeruginosa, respectively) and antioxidant (73% DPPH and 70% ABTS) properties. Therefore, the prepared hydrogels could be used as an effective controlled drug delivery system.
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33
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Lei L, Huang D, Gao H, He B, Cao J, Peppas NA. Hydrogel-guided strategies to stimulate an effective immune response for vaccine-based cancer immunotherapy. SCIENCE ADVANCES 2022; 8:eadc8738. [PMID: 36427310 PMCID: PMC9699680 DOI: 10.1126/sciadv.adc8738] [Citation(s) in RCA: 27] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 10/07/2022] [Indexed: 05/25/2023]
Abstract
Cancer vaccines have attracted widespread interest in tumor therapy because of the potential to induce an effective antitumor immune response. However, many challenges including weak immunogenicity, off-target effects, and immunosuppressive microenvironments have prevented their broad clinical translation. To overcome these difficulties, effective delivery systems have been designed for cancer vaccines. As carriers in cancer vaccine delivery systems, hydrogels have gained substantial attention because they can encapsulate a variety of antigens/immunomodulators and protect them from degradation. This enables hydrogels to simultaneously reverse immunosuppression and stimulate the immune response. Meanwhile, the controlled release properties of hydrogels allow for precise temporal and spatial release of loads in situ to further enhance the immune response of cancer vaccines. Therefore, this review summarizes the classification of cancer vaccines, highlights the strategies of hydrogel-based cancer vaccines, and provides some insights into the future development of hydrogel-based cancer vaccines.
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Affiliation(s)
- Lei Lei
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu 610064, P. R. China
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, P. R. China
| | - Dennis Huang
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
- Institute for Biomaterials, Drug Delivery, and Regenerative Medicine, The University of Texas at Austin, Austin, TX 78712, USA
| | - Huile Gao
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Engineering Laboratory for Plant-Sourced Drug and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, P. R. China
| | - Bin He
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu 610064, P. R. China
| | - Jun Cao
- National Engineering Research Center for Biomaterials, College of Biomedical Engineering, Sichuan University, Chengdu 610064, P. R. China
| | - Nicholas A. Peppas
- Department of Biomedical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
- Institute for Biomaterials, Drug Delivery, and Regenerative Medicine, The University of Texas at Austin, Austin, TX 78712, USA
- Department of Chemical Engineering, The University of Texas at Austin, Austin, TX 78712, USA
- Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, Austin, TX 78712, USA
- Departments of Pediatrics, Surgery, and Perioperative Care, Dell Medical School, The University of Texas at Austin, Austin, TX 78712, USA
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34
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Cross-linked bio-based hydrogels generated from solutions derived from the deconstruction of sisal fibers. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.120876] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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35
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Sui J. Self-growing nano-liquid-crystal film from dynamic swollen hydrogel substrates. Phys Rev E 2022; 106:054701. [PMID: 36559390 DOI: 10.1103/physreve.106.054701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2022] [Accepted: 11/01/2022] [Indexed: 06/17/2023]
Abstract
A hydrogel which spontaneously swells in an aqueous polymer solution was observed to produce a new hydrogel film coated on its swollen surface. Here, inspired by this phenomenon, we theoretically formulate the dynamics of isotropic-to-nematic (I-N) phase transition caused by swelling a hydrogel substrate (HS) in a dilute nanoplatelet suspension, and quantitatively characterize a self-growing nano-liquid-crystal (NLC) film coated on the swollen HS surface. We show that as the HS gets softer, the resulting NLC film can form earlier and achieve greater thickness (up to hundreds of micrometers). Our results and the existing experiments confirm that the growth dynamics of the NLC film or hydrogel film is exclusively regulated by the swelling behaviors of the HS instead of suspension configurations, e.g., I-N phase transition or sol-gel transition, suggesting a universal signature for the solutes ranging from molecules to colloids. However, both the maximum thickness of the NLC film and the corresponding characteristic time rely highly on the inherent elasticity of the HS and nanoplatelet aspect ratio. We demonstrate that the swelling quasiequilibrium state rather than the equilibrium state of the HS is more qualified to formulate a condition which is practically significant in preestimating the moment when the maximum thickness of the NLC film appears. Our theoretical framework serves as a robust paradigm to extensively rationalize (bio)film coatings which self-integrate with diverse nanostructural configurations via swelling-induced phase transition.
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Affiliation(s)
- Jize Sui
- State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190, China
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36
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Dsouza A, Constantinidou C, Arvanitis TN, Haddleton DM, Charmet J, Hand RA. Multifunctional Composite Hydrogels for Bacterial Capture, Growth/Elimination, and Sensing Applications. ACS APPLIED MATERIALS & INTERFACES 2022; 14:47323-47344. [PMID: 36222596 PMCID: PMC9614723 DOI: 10.1021/acsami.2c08582] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Accepted: 09/20/2022] [Indexed: 06/16/2023]
Abstract
Hydrogels are cross-linked networks of hydrophilic polymer chains with a three-dimensional structure. Owing to their unique features, the application of hydrogels for bacterial/antibacterial studies and bacterial infection management has grown in importance in recent years. This trend is likely to continue due to the rise in bacterial infections and antimicrobial resistance. By exploiting their physicochemical characteristics and inherent nature, hydrogels have been developed to achieve bacterial capture and detection, bacterial growth or elimination, antibiotic delivery, or bacterial sensing. Traditionally, the development of hydrogels for bacterial/antibacterial studies has focused on achieving a single function such as antibiotic delivery, antibacterial activity, bacterial growth, or bacterial detection. However, recent studies demonstrate the fabrication of multifunctional hydrogels, where a single hydrogel is capable of performing more than one bacterial/antibacterial function, or composite hydrogels consisting of a number of single functionalized hydrogels, which exhibit bacterial/antibacterial function synergistically. In this review, we first highlight the hydrogel features critical for bacterial studies and infection management. Then, we specifically address unique hydrogel properties, their surface/network functionalization, and their mode of action for bacterial capture, adhesion/growth, antibacterial activity, and bacterial sensing, respectively. Finally, we provide insights into different strategies for developing multifunctional hydrogels and how such systems can help tackle, manage, and understand bacterial infections and antimicrobial resistance. We also note that the strategies highlighted in this review can be adapted to other cell types and are therefore likely to find applications beyond the field of microbiology.
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Affiliation(s)
- Andrea Dsouza
- Warwick
Manufacturing Group, The University of Warwick, Coventry, United Kingdom CV4 7AL
| | | | - Theodoros N. Arvanitis
- Institute
of Digital Healthcare, Warwick Manufacturing Group, The University of Warwick, Coventry, United Kingdom CV4 7AL
| | - David M. Haddleton
- Department
of Chemistry, The University of Warwick, Coventry, United Kingdom CV4 7AL
| | - Jérôme Charmet
- Warwick
Manufacturing Group, The University of Warwick, Coventry, United Kingdom CV4 7AL
- Warwick
Medical School, The University of Warwick, Coventry, United Kingdom CV4 7AL
- School
of Engineering—HE-Arc Ingénierie, HES-SO University of Applied Sciences Western Switzerland, 2000 Neuchâtel, Switzerland
| | - Rachel A. Hand
- Department
of Chemistry, The University of Warwick, Coventry, United Kingdom CV4 7AL
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37
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Cross-evaluation of stiffness measurement methods for hydrogels. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.125316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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38
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Chen M, Aluunmani R, Bolognesi G, Vladisavljević GT. Facile Microfluidic Fabrication of Biocompatible Hydrogel Microspheres in a Novel Microfluidic Device. Molecules 2022; 27:molecules27134013. [PMID: 35807255 PMCID: PMC9268728 DOI: 10.3390/molecules27134013] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2022] [Revised: 06/20/2022] [Accepted: 06/20/2022] [Indexed: 02/06/2023] Open
Abstract
Poly(ethylene glycol) diacrylate (PEGDA) microgels with tuneable size and porosity find applications as extracellular matrix mimics for tissue-engineering scaffolds, biosensors, and drug carriers. Monodispersed PEGDA microgels were produced by modular droplet microfluidics using the dispersed phase with 49–99 wt% PEGDA, 1 wt% Darocur 2959, and 0–50 wt% water, while the continuous phase was 3.5 wt% silicone-based surfactant dissolved in silicone oil. Pure PEGDA droplets were fully cured within 60 s at the UV light intensity of 75 mW/cm2. The droplets with higher water content required more time for curing. Due to oxygen inhibition, the polymerisation started in the droplet centre and advanced towards the edge, leading to a temporary solid core/liquid shell morphology, confirmed by tracking the Brownian motion of fluorescent latex nanoparticles within a droplet. A volumetric shrinkage during polymerisation was 1–4% for pure PEGDA droplets and 20–32% for the droplets containing 10–40 wt% water. The particle volume increased by 36–50% after swelling in deionised water. The surface smoothness and sphericity of the particles decreased with increasing water content in the dispersed phase. The porosity of swollen particles was controlled from 29.7% to 41.6% by changing the water content in the dispersed phase from 10 wt% to 40 wt%.
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39
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Bercea M. Bioinspired Hydrogels as Platforms for Life-Science Applications: Challenges and Opportunities. Polymers (Basel) 2022; 14:polym14122365. [PMID: 35745941 PMCID: PMC9229923 DOI: 10.3390/polym14122365] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2022] [Revised: 06/08/2022] [Accepted: 06/09/2022] [Indexed: 12/13/2022] Open
Abstract
Hydrogels, as interconnected networks (polymer mesh; physically, chemically, or dynamic crosslinked networks) incorporating a high amount of water, present structural characteristics similar to soft natural tissue. They enable the diffusion of different molecules (ions, drugs, and grow factors) and have the ability to take over the action of external factors. Their nature provides a wide variety of raw materials and inspiration for functional soft matter obtained by complex mechanisms and hierarchical self-assembly. Over the last decade, many studies focused on developing innovative and high-performance materials, with new or improved functions, by mimicking biological structures at different length scales. Hydrogels with natural or synthetic origin can be engineered as bulk materials, micro- or nanoparticles, patches, membranes, supramolecular pathways, bio-inks, etc. The specific features of hydrogels make them suitable for a wide variety of applications, including tissue engineering scaffolds (repair/regeneration), wound healing, drug delivery carriers, bio-inks, soft robotics, sensors, actuators, catalysis, food safety, and hygiene products. This review is focused on recent advances in the field of bioinspired hydrogels that can serve as platforms for life-science applications. A brief outlook on the actual trends and future directions is also presented.
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Affiliation(s)
- Maria Bercea
- "Petru Poni" Institute of Macromolecular Chemistry, 700487 Iasi, Romania
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40
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Gutierrez AM, Frazar EM, X Klaus MV, Paul P, Hilt JZ. Hydrogels and Hydrogel Nanocomposites: Enhancing Healthcare through Human and Environmental Treatment. Adv Healthc Mater 2022; 11:e2101820. [PMID: 34811960 PMCID: PMC8986592 DOI: 10.1002/adhm.202101820] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 11/08/2021] [Indexed: 12/11/2022]
Abstract
Humans are constantly exposed to exogenous chemicals throughout their life, which can lead to a multitude of negative health impacts. Advanced materials can play a key role in preventing or mitigating these impacts through a wide variety of applications. The tunable properties of hydrogels and hydrogel nanocomposites (e.g., swelling behavior, biocompatibility, stimuli responsiveness, functionality, etc.) have deemed them ideal platforms for removal of environmental contaminants, detoxification, and reduction of body burden from exogenous chemical exposures for prevention of disease initiation, and advanced treatment of chronic diseases, including cancer, diabetes, and cardiovascular disease. In this review, three main junctures where the use of hydrogel and hydrogel nanocomposite materials can intervene to positively impact human health are highlighted: 1) preventing exposures to environmental contaminants, 2) prophylactic treatments to prevent chronic disease initiation, and 3) treating chronic diseases after they have developed.
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Affiliation(s)
- Angela M Gutierrez
- Department of Chemical and Materials Engineering, University of Kentucky, 177 F Paul Anderson Tower, Lexington, KY, 40506, USA
- Superfund Research Center, University of Kentucky, Lexington, KY, 40506, USA
| | - Erin Molly Frazar
- Department of Chemical and Materials Engineering, University of Kentucky, 177 F Paul Anderson Tower, Lexington, KY, 40506, USA
- Superfund Research Center, University of Kentucky, Lexington, KY, 40506, USA
| | - Maria Victoria X Klaus
- Department of Chemical and Materials Engineering, University of Kentucky, 177 F Paul Anderson Tower, Lexington, KY, 40506, USA
- Superfund Research Center, University of Kentucky, Lexington, KY, 40506, USA
| | - Pranto Paul
- Department of Chemical and Materials Engineering, University of Kentucky, 177 F Paul Anderson Tower, Lexington, KY, 40506, USA
- Superfund Research Center, University of Kentucky, Lexington, KY, 40506, USA
| | - J Zach Hilt
- Department of Chemical and Materials Engineering, University of Kentucky, 177 F Paul Anderson Tower, Lexington, KY, 40506, USA
- Superfund Research Center, University of Kentucky, Lexington, KY, 40506, USA
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41
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Gilchrist AE, Harley BA. Engineered Tissue Models to Replicate Dynamic Interactions within the Hematopoietic Stem Cell Niche. Adv Healthc Mater 2022; 11:e2102130. [PMID: 34936239 PMCID: PMC8986554 DOI: 10.1002/adhm.202102130] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 11/19/2021] [Indexed: 12/19/2022]
Abstract
Hematopoietic stem cells are the progenitors of the blood and immune system and represent the most widely used regenerative therapy. However, their rarity and limited donor base necessitate the design of ex vivo systems that support HSC expansion without the loss of long-term stem cell activity. This review describes recent advances in biomaterials systems to replicate features of the hematopoietic niche. Inspired by the native bone marrow, these instructive biomaterials provide stimuli and cues from cocultured niche-associated cells to support HSC encapsulation and expansion. Engineered systems increasingly enable study of the dynamic nature of the matrix and biomolecular environment as well as the role of cell-cell signaling (e.g., autocrine feedback vs paracrine signaling between dissimilar cells). The inherent coupling of material properties, biotransport of cell-secreted factors, and cell-mediated remodeling motivate dynamic biomaterial systems as well as characterization and modeling tools capable of evaluating a temporally evolving tissue microenvironment. Recent advances in HSC identification and tracking, model-based experimental design, and single-cell culture platforms facilitate the study of the effect of constellations of matrix, cell, and soluble factor signals on HSC fate. While inspired by the HSC niche, these tools are amenable to the broader stem cell engineering community.
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Affiliation(s)
- Aidan E. Gilchrist
- Department of Materials Science and Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801
| | - Brendan A.C. Harley
- Department of Chemical and Biomolecular Engineering, University of Illinois at Urbana-Champaign, Urbana, IL 61801
- Carl R. Woese Institute for Genomic Biology, University of Illinois at Urbana-Champaign, Urbana, IL 61801
- Cancer Center at Illinois, University of Illinois at Urbana-Champaign, Urbana, IL 61801
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42
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Choe R, Devoy E, Kuzemchak B, Sherry M, Jabari E, Packer JD, Fisher JP. Computational investigation of interface printing patterns within 3D printed multilayered scaffolds for osteochondral tissue engineering. Biofabrication 2022; 14:10.1088/1758-5090/ac5220. [PMID: 35120345 PMCID: PMC8918066 DOI: 10.1088/1758-5090/ac5220] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 02/04/2022] [Indexed: 11/12/2022]
Abstract
Osteoarthritis is a highly prevalent rheumatic musculoskeletal disorder that commonly affects many joints. Repetitive joint overloading perpetuates the damage to the affected cartilage, which undermines the structural integrity of the osteochondral unit. Various tissue engineering strategies have been employed to design multiphasic osteochondral scaffolds that recapitulate layer-specific biomechanical properties, but the inability to fully satisfy mechanical demands within the joint has limited their success. Through computational modeling and extrusion-based bioprinting, we attempted to fabricate a biphasic osteochondral scaffold with improved shear properties and a mechanically strong interface. A 3D stationary solid mechanics model was developed to simulate the effect of lateral shear force on various thermoplastic polymer/hydrogel scaffolds with a patterned interface. Additionally, interfacial shear tests were performed on bioprinted polycaprolactone (PCL)/hydrogel interface scaffolds. The first simulation showed that the PCL/gelatin methacrylate (GelMA) and PCL/polyethylene glycol diacrylate (PEGDA) scaffolds interlocking hydrogel and PCL at interface in a 1:1 ratio possessed the largest average tensile (PCL/GelMA: 80.52 kPa; PCL/PEGDA: 79.75 kPa) and compressive stress (PCL/GelMA: 74.71 kPa; PCL/PEGDA: 73.83 kPa). Although there were significant differences in shear strength between PCL/GelMA and PCL/PEGDA scaffolds, no significant difference was observed among the treatment groups within both scaffold types. Lastly, the hypothetical simulations of potential biphasic 3D printed scaffolds showed that for every order of magnitude decrease in Young's modulus (E) of the soft bioink, all the scaffolds underwent an exponential increase in average displacement at the cartilage and interface layers. The following work provides valuable insights into the biomechanics of 3D printed osteochondral scaffolds, which will help inform future scaffold designs for enhanced regenerative outcomes.
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Affiliation(s)
- Robert Choe
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland 20742, USA,Center for Engineering Complex Tissues, University of Maryland, College Park, Maryland 20742, USA
| | - Eoin Devoy
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland 20742, USA,Center for Engineering Complex Tissues, University of Maryland, College Park, Maryland 20742, USA
| | - Blake Kuzemchak
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland 20742, USA,Center for Engineering Complex Tissues, University of Maryland, College Park, Maryland 20742, USA
| | - Mary Sherry
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland 20742, USA,Center for Engineering Complex Tissues, University of Maryland, College Park, Maryland 20742, USA
| | - Erfan Jabari
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland 20742, USA,Center for Engineering Complex Tissues, University of Maryland, College Park, Maryland 20742, USA
| | - Jonathan D. Packer
- Department of Orthopaedics, University of Maryland School of Medicine, Baltimore, Maryland 21201, USA
| | - John P. Fisher
- Fischell Department of Bioengineering, University of Maryland, College Park, Maryland 20742, USA,Center for Engineering Complex Tissues, University of Maryland, College Park, Maryland 20742, USA
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Peters JT, Wechsler ME, Peppas NA. Advanced biomedical hydrogels: molecular architecture and its impact on medical applications. Regen Biomater 2021; 8:rbab060. [PMID: 34925879 PMCID: PMC8678442 DOI: 10.1093/rb/rbab060] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 09/22/2021] [Accepted: 10/18/2021] [Indexed: 12/13/2022] Open
Abstract
Hydrogels are cross-linked polymeric networks swollen in water, physiological aqueous solutions or biological fluids. They are synthesized by a wide range of polymerization methods that allow for the introduction of linear and branched units with specific molecular characteristics. In addition, they can be tuned to exhibit desirable chemical characteristics including hydrophilicity or hydrophobicity. The synthesized hydrogels can be anionic, cationic, or amphiphilic and can contain multifunctional cross-links, junctions or tie points. Beyond these characteristics, hydrogels exhibit compatibility with biological systems, and can be synthesized to render systems that swell or collapse in response to external stimuli. This versatility and compatibility have led to better understanding of how the hydrogel's molecular architecture will affect their physicochemical, mechanical and biological properties. We present a critical summary of the main methods to synthesize hydrogels, which define their architecture, and advanced structural characteristics for macromolecular/biological applications.
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Affiliation(s)
- Jonathan T Peters
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, 200 E. Dean Keeton, Austin, TX 78712, USA
- Institute for Biomaterials, Drug Delivery, and Regenerative Medicine, The University of Texas at Austin, 107 W. Dean Keeton, Austin, TX 78712, USA
| | - Marissa E Wechsler
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, One UTSA Circle, San Antonio, TX, 78249, USA
| | - Nicholas A Peppas
- McKetta Department of Chemical Engineering, The University of Texas at Austin, Austin, 200 E. Dean Keeton, Austin, TX 78712, USA
- Institute for Biomaterials, Drug Delivery, and Regenerative Medicine, The University of Texas at Austin, 107 W. Dean Keeton, Austin, TX 78712, USA
- Department of Biomedical Engineering, The University of Texas at Austin, 107 W. Dean Keeton, Austin, TX 78712, USA
- Division of Molecular Pharmaceutics and Drug Delivery, College of Pharmacy, The University of Texas at Austin, 107 W. Dean Keeton, Austin, TX 78712, USA
- Department of Surgery and Perioperative Care, and Department of Pediatrics, Dell Medical School, The University of Texas at Austin, 1601 Trinity St., Bldg. B, Austin, TX 78712, USA
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Richbourg NR, Peppas NA. High-Throughput FRAP Analysis of Solute Diffusion in Hydrogels. Macromolecules 2021; 54:10477-10486. [DOI: 10.1021/acs.macromol.1c01752] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nathan R. Richbourg
- Department of Biomedical Engineering, University of Texas, Austin, Texas 78712, United States
| | - Nicholas A. Peppas
- Department of Biomedical Engineering, University of Texas, Austin, Texas 78712, United States
- McKetta Department of Chemical Engineering, University of Texas, Austin, Texas 78712, United States
- Division of Molecular Therapeutics and Drug Delivery, College of Pharmacy, University of Texas, Austin, Texas 78712, United States
- Departments of Surgery and Pediatrics, Dell Medical School, University of Texas, Austin, Texas 78712, United States
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Richbourg NR, Ravikumar A, Peppas NA. Solute Transport Dependence on 3D Geometry of Hydrogel Networks. MACROMOL CHEM PHYS 2021; 222:2100138. [PMID: 34456531 PMCID: PMC8389770 DOI: 10.1002/macp.202100138] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Indexed: 11/11/2022]
Abstract
Hydrogels are used in drug delivery applications, chromatography, and tissue engineering to control the rate of solute transport based on solute size and hydrogel-solute affinity. Ongoing modeling efforts to quantify the relationship between hydrogel properties, solute properties, and solute transport contribute toward an increasingly efficient hydrogel design process and provide fundamental insight into the mechanisms relating hydrogel structure and function. However, here we clarify previous conclusions regarding the use of mesh size in hydrogel transport models. We use 3D geometry and hydrogel network visualizations to show that mesh size and junction functionality both contribute to the mesh radius, which determines whether a solute can diffuse within a hydrogel. Using mesh radius instead of mesh size to model solute transport in hydrogels will correct junction functionality-dependent modeling errors, improving hydrogel design predictions and clarifying mechanisms of solute transport in hydrogels.
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Affiliation(s)
- Nathan R. Richbourg
- Department of Biomedical Engineering, University of Texas, Austin, TX 78712, USA
| | - Akhila Ravikumar
- Department of Biomedical Engineering, University of Texas, Austin, TX 78712, USA
| | - Nicholas A. Peppas
- Department of Biomedical Engineering, University of Texas, Austin, TX 78712, USA
- McKetta Department of Chemical Engineering, University of Texas, Austin, TX 78712, USA
- Division of Molecular Therapeutics and Drug Delivery, College of Pharmacy, University of Texas, Austin, TX 78712, USA
- Departments of Surgery and Pediatrics, Dell Medical School, University of Texas, Austin, TX 78712, USA
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Narasimhan BN, Horrocks MS, Malmström J. Hydrogels with Tunable Physical Cues and Their Emerging Roles in Studies of Cellular Mechanotransduction. ADVANCED NANOBIOMED RESEARCH 2021. [DOI: 10.1002/anbr.202100059] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Affiliation(s)
- Badri Narayanan Narasimhan
- Department of Chemical and Materials Engineering University of Auckland Private Bag 92019 Auckland 1142 New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology Victoria University of Wellington PO Box 600 Wellington 6140 New Zealand
| | - Matthew S. Horrocks
- Department of Chemical and Materials Engineering University of Auckland Private Bag 92019 Auckland 1142 New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology Victoria University of Wellington PO Box 600 Wellington 6140 New Zealand
| | - Jenny Malmström
- Department of Chemical and Materials Engineering University of Auckland Private Bag 92019 Auckland 1142 New Zealand
- MacDiarmid Institute for Advanced Materials and Nanotechnology Victoria University of Wellington PO Box 600 Wellington 6140 New Zealand
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