1
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Su B, Chi T, Chen W, Xian S, Liu D, Addonizio CJ, Xiang Y, Webber MJ. Using a biocatalyzed reaction cycle for transient and pH-dependent host-guest supramolecular hydrogels. J Mater Chem B 2024; 12:4666-4672. [PMID: 38647183 PMCID: PMC11095629 DOI: 10.1039/d4tb00545g] [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: 03/13/2024] [Accepted: 04/15/2024] [Indexed: 04/25/2024]
Abstract
The formation of transient structures plays important roles in biological processes, capturing temporary states of matter through influx of energy or biological reaction networks catalyzed by enzymes. These natural transient structures inspire efforts to mimic this elegant mechanism of structural control in synthetic analogues. Specifically, though traditional supramolecular materials are designed on the basis of equilibrium formation, recent efforts have explored out-of-equilibrium control of these materials using both direct and indirect mechanisms; the preponderance of such works has been in the area of low molecular weight gelators. Here, a transient supramolecular hydrogel is realized through cucurbit[7]uril host-guest physical crosslinking under indirect control from a biocatalyzed network that regulates and oscillates pH. The duration of transient hydrogel formation, and resulting mechanical properties, are tunable according to the dose of enzyme, substrate, or pH stimulus. This tunability enables control over emergent functions, such as the programmable burst release of encapsulated model macromolecular payloads.
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Affiliation(s)
- Bo Su
- Department of Chemcial & Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana, USA.
| | - Teng Chi
- Department of Chemcial & Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana, USA.
| | - Weike Chen
- Department of Chemcial & Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana, USA.
| | - Sijie Xian
- Department of Chemcial & Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana, USA.
| | - Dongping Liu
- Department of Chemcial & Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana, USA.
| | - Christopher J Addonizio
- Department of Chemcial & Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana, USA.
| | - Yuanhui Xiang
- Department of Chemcial & Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana, USA.
| | - Matthew J Webber
- Department of Chemcial & Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana, USA.
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2
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D’Elia A, Jones OL, Canziani G, Sarkar B, Chaiken I, Rodell CB. Injectable Granular Hydrogels Enable Avidity-Controlled Biotherapeutic Delivery. ACS Biomater Sci Eng 2024; 10:1577-1588. [PMID: 38357739 PMCID: PMC10934254 DOI: 10.1021/acsbiomaterials.3c01906] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2023] [Revised: 01/29/2024] [Accepted: 01/31/2024] [Indexed: 02/16/2024]
Abstract
Protein therapeutics represent a rapidly growing class of pharmaceutical agents that hold great promise for the treatment of various diseases such as cancer and autoimmune dysfunction. Conventional systemic delivery approaches, however, result in off-target drug exposure and a short therapeutic half-life, highlighting the need for more localized and controlled delivery. We have developed an affinity-based protein delivery system that uses guest-host complexation between β-cyclodextrin (CD, host) and adamantane (Ad, guest) to enable sustained localized biomolecule presentation. Hydrogels were formed by the copolymerization of methacrylated CD and methacrylated dextran. Extrusion fragmentation of bulk hydrogels yielded shear-thinning and self-healing granular hydrogels (particle diameter = 32.4 ± 16.4 μm) suitable for minimally invasive delivery and with a high host capacity for the retention of guest-modified proteins. Bovine serum albumin (BSA) was controllably conjugated to Ad via EDC chemistry without affecting the affinity of the Ad moiety for CD (KD = 12.0 ± 1.81 μM; isothermal titration calorimetry). The avidity of Ad-BSA conjugates was directly tunable through the number of guest groups attached, resulting in a fourfold increase in the complex half-life (t1/2 = 5.07 ± 1.23 h, surface plasmon resonance) that enabled a fivefold reduction in protein release at 28 days. Furthermore, we demonstrated that the conjugation of Ad to immunomodulatory cytokines (IL-4, IL-10, and IFNγ) did not detrimentally affect cytokine bioactivity and enabled their sustained release. Our strategy of avidity-controlled delivery of protein-based therapeutics is a promising approach for the sustained local presentation of protein therapeutics and can be applied to numerous biomedical applications.
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Affiliation(s)
- Arielle
M. D’Elia
- School
of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, Pennsylvania 19104, United States
| | - Olivia L. Jones
- School
of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, Pennsylvania 19104, United States
| | - Gabriela Canziani
- Department
of Biochemistry and Molecular Biology, Drexel
University College of Medicine, Philadelphia, Pennsylvania 19102, United States
| | - Biplab Sarkar
- School
of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, Pennsylvania 19104, United States
| | - Irwin Chaiken
- Department
of Biochemistry and Molecular Biology, Drexel
University College of Medicine, Philadelphia, Pennsylvania 19102, United States
| | - Christopher B. Rodell
- School
of Biomedical Engineering, Science and Health Systems, Drexel University, Philadelphia, Pennsylvania 19104, United States
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3
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Janssen ML, Liu T, Özel M, Bril M, Prasad Thelu HV, E Kieltyka R. Dynamic Exchange in 3D Cell Culture Hydrogels Based on Crosslinking of Cyclic Thiosulfinates. Angew Chem Int Ed Engl 2024; 63:e202314738. [PMID: 38055926 DOI: 10.1002/anie.202314738] [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: 10/01/2023] [Revised: 11/29/2023] [Accepted: 12/06/2023] [Indexed: 12/08/2023]
Abstract
Dynamic polymer materials are highly valued substrates for 3D cell culture due to their viscoelasticity, a time-dependent mechanical property that can be tuned to resemble the energy dissipation of native tissues. Herein, we report the coupling of a cyclic thiosulfinate, mono-S-oxo-4-methyl asparagusic acid, to a 4-arm PEG-OH to prepare a disulfide-based dynamic covalent hydrogel with the addition of 4-arm PEG-thiol. Ring opening of the cyclic thiosulfinate by nucleophilic substitution results in the rapid formation of a network showing a viscoelastic fluid-like behaviour and relaxation rates modulated by thiol content through thiol-disulfide exchange, whereas its viscoelastic behaviour upon application as a small molecule linear crosslinker is solid-like. Further introduction of 4-arm PEG-vinylsulfone in the network yields a hydrogel with weeks-long cell culture stability, permitting 3D culture of cell types that lack robust proliferation, such as human pluripotent stem cell-derived cardiomyocytes (hPSC-CMs). These cells display native behaviours such as cell elongation and spontaneous beating as a function of the hydrogel's mechanical properties. We demonstrate that the mode of dynamic cyclic thiosulfinate crosslinker presentation within the network can result in different stress relaxation profiles, opening the door to model tissues with disparate mechanics in 3D cell culture.
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Affiliation(s)
- Merel L Janssen
- Department of Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, P.O. Box 9502, 2300 RA, Leiden, The Netherlands
| | - Tingxian Liu
- Department of Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, P.O. Box 9502, 2300 RA, Leiden, The Netherlands
| | - Mertcan Özel
- Department of Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, P.O. Box 9502, 2300 RA, Leiden, The Netherlands
| | - Maaike Bril
- Department of Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, P.O. Box 9502, 2300 RA, Leiden, The Netherlands
| | - Hari Veera Prasad Thelu
- Department of Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, P.O. Box 9502, 2300 RA, Leiden, The Netherlands
| | - Roxanne E Kieltyka
- Department of Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, P.O. Box 9502, 2300 RA, Leiden, The Netherlands
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4
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Li Y, Chen R, Zhou B, Dong Y, Liu D. Rational Design of DNA Hydrogels Based on Molecular Dynamics of Polymers. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2307129. [PMID: 37820719 DOI: 10.1002/adma.202307129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Revised: 10/03/2023] [Indexed: 10/13/2023]
Abstract
In recent years, DNA has emerged as a fascinating building material to engineer hydrogel due to its excellent programmability, which has gained considerable attention in biomedical applications. Understanding the structure-property relationship and underlying molecular determinants of DNA hydrogel is essential to precisely tailor its macroscopic properties at molecular level. In this review, the rational design principles of DNA molecular networks based on molecular dynamics of polymers on the temporal scale, which can be engineered via the backbone rigidity and crosslinking kinetics, are highlighted. By elucidating the underlying molecular mechanisms and theories, it is aimed to provide a comprehensive overview of how the tunable DNA backbone rigidity and the crosslinking kinetics lead to desirable macroscopic properties of DNA hydrogels, including mechanical properties, diffusive permeability, swelling behaviors, and dynamic features. Furthermore, it is also discussed how the tunable macroscopic properties make DNA hydrogels promising candidates for biomedical applications, such as cell culture, tissue engineering, bio-sensing, and drug delivery.
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Affiliation(s)
- Yujie Li
- Engineering Research Center of Advanced Rare Earth Materials, (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
| | - Ruofan Chen
- Engineering Research Center of Advanced Rare Earth Materials, (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
| | - Bini Zhou
- Engineering Research Center of Advanced Rare Earth Materials, (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
| | - Yuanchen Dong
- CAS Key Laboratory of Colloid, Interface and Chemical Thermodynamics, Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Dongsheng Liu
- Engineering Research Center of Advanced Rare Earth Materials, (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing, 100084, P. R. China
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5
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Zarkesh I, Movahedi F, Sadeghi-Abandansari H, Pahlavan S, Soleimani M, Baharvand H. ROS scavenging activity of polydopamine nanoparticle-loaded supramolecular gelatin-based hydrogel promoted cardiomyocyte proliferation. Int J Biol Macromol 2024; 259:129228. [PMID: 38184051 DOI: 10.1016/j.ijbiomac.2024.129228] [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: 09/15/2023] [Revised: 01/01/2024] [Accepted: 01/02/2024] [Indexed: 01/08/2024]
Abstract
Reactive oxygen species (ROS) play essential roles in cellular functions, but maintaining ROS balance is crucial for effective therapeutic interventions, especially during cell therapy. In this study, we synthesized an injectable gelatin-based hydrogel, in which polydopamine nanoparticles were entrapped using supramolecular interactions. The surfaces of the nanoparticles were modified using adamantane, enabling their interactions with β-cyclodextrin-conjugated with gelatin. We evaluated the cytotoxicity and antioxidant properties of the hydrogel on neonatal rat cardiomyocytes (NRCM), where it demonstrated the ability to increase the metabolic activity of NRCMs exposed to hydrogen peroxide (H2O2) after 5 days. Hydrogel-entrapped nanoparticle exhibited a high scavenging capability against hydroxyl radical, 1'-diphenyl-2-picrylhydrazyl radicals, and H2O2, surpassing the effectiveness of ascorbic acid solution. Notably, the presence of polydopamine nanoparticles within the hydrogel promoted the proliferation activity of NRCMs, even in the absence of excessive ROS due to H2O2 treatment. Additionally, when the hydrogel with nanoparticles was injected into an air pouch model, it reduced inflammation and infiltration of immune cells. Notably, the levels of anti-inflammatory factors, IL-10 and IL-4, were significantly increased, while the pro-inflammatory factor TNF-α was suppressed. Therefore, this novel ROS-scavenging hydrogel holds promise for both efficient cell delivery into inflamed tissue and promoting tissue repair.
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Affiliation(s)
- Ibrahim Zarkesh
- Department of Tissue Engineering and Regenerative Medicine, Faculty of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Iran; Department of Cell engineering, Cell Science Research Center, Royan Institute, ACECR, Tehran, Iran
| | - Fatemeh Movahedi
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute, ACECR, Tehran, Iran
| | - Hamid Sadeghi-Abandansari
- Department of Cell engineering, Cell Science Research Center, Royan Institute, ACECR, Tehran, Iran; Department of Cancer Medicine, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Babol, Iran
| | - Sara Pahlavan
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute, ACECR, Tehran, Iran
| | - Mansoureh Soleimani
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran; Anatomy Department, School of Medicine, Iran University of Medical Sciences (IUMS), Tehran, Iran.
| | - Hossein Baharvand
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute, ACECR, Tehran, Iran; Department of Developmental Biology, School of Basic Sciences and Advanced Technologies in Biology, University of Science and Culture, Tehran, Iran.
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6
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Fan F, Su B, Kolodychak A, Ekwueme E, Alderfer L, Saha S, Webber MJ, Hanjaya-Putra D. Hyaluronic Acid Hydrogels with Phototunable Supramolecular Cross-Linking for Spatially Controlled Lymphatic Tube Formation. ACS APPLIED MATERIALS & INTERFACES 2023; 15:58181-58195. [PMID: 38065571 PMCID: PMC10739586 DOI: 10.1021/acsami.3c12514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 11/23/2023] [Accepted: 11/27/2023] [Indexed: 12/22/2023]
Abstract
The dynamics of the extracellular matrix (ECM) influences stem cell differentiation and morphogenesis into complex lymphatic networks. While dynamic hydrogels with stress relaxation properties have been developed, many require detailed chemical processing to tune viscoelasticity, offering a limited opportunity for in situ and spatiotemporal control. Here, a hyaluronic acid (HA) hydrogel is reported with viscoelasticity that is controlled and spatially tunable using UV light to direct the extent of supramolecular and covalent cross-linking interactions. This is achieved using UV-mediated photodimerization of a supramolecular ternary complex of pendant trans-Brooker's Merocyanine (BM) guests and a cucurbit[8]uril (CB[8]) macrocycle. The UV-mediated conversion of this supramolecular complex to its covalent photodimerized form is catalyzed by CB[8], offering a user-directed route to spatially control hydrogel dynamics in combination with orthogonal photopatterning by UV irradiation through photomasks. This material thus achieves spatial heterogeneity of substrate dynamics, recreating features of native ECM without the need for additional chemical reagents. Moreover, these dynamic hydrogels afford spatial control of substrate mechanics to direct human lymphatic endothelial cells (LECs) to form lymphatic cord-like structures (CLS). Specifically, cells cultured on viscoelastic supramolecular hydrogels have enhanced formation of CLS, arising from increased expression of key lymphatic markers, such as LYVE-1, Podoplanin, and Prox1, compared to static elastic hydrogels prepared from fully covalent cross-linking. Viscoelastic hydrogels promote lymphatic CLS formation through the expression of Nrp2, VEGFR2, and VEGFR3 to enhance the VEGF-C stimulation. Overall, viscoelastic supramolecular hydrogels offer a facile route to spatially control lymphatic CLS formation, providing a tool for future studies of basic lymphatic biology and tissue engineering applications.
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Affiliation(s)
- Fei Fan
- Bioengineering
Graduate Program, Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Bo Su
- Chemical
and Biomolecular Engineering, University
of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Alexander Kolodychak
- Chemical
and Biomolecular Engineering, University
of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Ephraim Ekwueme
- Bioengineering
Graduate Program, Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Laura Alderfer
- Bioengineering
Graduate Program, Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Sanjoy Saha
- Bioengineering
Graduate Program, Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Matthew J. Webber
- Chemical
and Biomolecular Engineering, University
of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Donny Hanjaya-Putra
- Bioengineering
Graduate Program, Aerospace and Mechanical Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
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7
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Zhang Y, Li R, Trick TC, Nosiglia MA, Palmquist MS, Wong ML, Dorsainvil JM, Tran SL, Danielson MK, Barnes JC. Saltwater-Induced Rapid Gelation of Photoredox-Responsive Mucomimetic Hydrogels. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023:e2307356. [PMID: 38124527 DOI: 10.1002/adma.202307356] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Revised: 12/06/2023] [Indexed: 12/23/2023]
Abstract
Shear-thinning hydrogels represent an important class of injectable soft materials that are often used in a wide range of biomedical applications. Creation of new shear-thinning materials often requires that factors such as viscosity, injection rate/force, and needle gauge be evaluated to achieve efficient delivery, while simultaneously protecting potentially sensitive cargo. Here, a new approach to establishing shear-thinning hydrogels is reported where a host-guest cross-linked network initially remains soluble in deionized water but is kinetically trapped as a viscous hydrogel once exposed to saltwater. The shear-thinning properties of the hydrogel is then "switched on" in response to heating or exposure to visible light. These hydrogels consist of polynorbornene-based bottlebrush copolymers with porphyrin- and oligoviologen-containing side chains that are cross-linked through the reversible formation of β-cyclodextrin-adamantane inclusion complexes. The resultant viscous hydrogels display broad adhesive properties across polar and nonpolar substrates, mimicking that of natural mucous and thus making it easier to distribute onto a wide range of surfaces. Additional control over the hydrogel's mechanical properties (storage/loss moduli) and performance (adhesion) is achieved post-injection using a low-energy (blue light) photoinduced electron-transfer process. This work envisions these injectable copolymers and multimodal hydrogels can serve as versatile next-generation biomaterials capable of light-based mechanical manipulation post-injection.
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Affiliation(s)
- Yipei Zhang
- Department of Chemistry, Washington University, St. Louis, MO 63130, USA
| | - Ruihan Li
- Department of Chemistry, Washington University, St. Louis, MO 63130, USA
| | - Tarryn C Trick
- Department of Chemistry, Washington University, St. Louis, MO 63130, USA
| | - Mark A Nosiglia
- Department of Chemistry, Washington University, St. Louis, MO 63130, USA
| | - Mark S Palmquist
- Department of Chemistry, Washington University, St. Louis, MO 63130, USA
| | - Mason L Wong
- Department of Chemistry, Washington University, St. Louis, MO 63130, USA
| | | | - Sheila L Tran
- Department of Chemistry, Washington University, St. Louis, MO 63130, USA
| | - Mary K Danielson
- Department of Chemistry, Washington University, St. Louis, MO 63130, USA
| | - Jonathan C Barnes
- Department of Chemistry, Washington University, St. Louis, MO 63130, USA
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8
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Gharios R, Francis RM, DeForest CA. Chemical and Biological Engineering Strategies to Make and Modify Next-Generation Hydrogel Biomaterials. MATTER 2023; 6:4195-4244. [PMID: 38313360 PMCID: PMC10836217 DOI: 10.1016/j.matt.2023.10.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2024]
Abstract
There is a growing interest in the development of technologies to probe and direct in vitro cellular function for fundamental organoid and stem cell biology, functional tissue and metabolic engineering, and biotherapeutic formulation. Recapitulating many critical aspects of the native cellular niche, hydrogel biomaterials have proven to be a defining platform technology in this space, catapulting biological investigation from traditional two-dimensional (2D) culture into the 3D world. Seeking to better emulate the dynamic heterogeneity characteristic of all living tissues, global efforts over the last several years have centered around upgrading hydrogel design from relatively simple and static architectures into stimuli-responsive and spatiotemporally evolvable niches. Towards this end, advances from traditionally disparate fields including bioorthogonal click chemistry, chemoenzymatic synthesis, and DNA nanotechnology have been co-opted and integrated to construct 4D-tunable systems that undergo preprogrammed functional changes in response to user-defined inputs. In this Review, we highlight how advances in synthetic, semisynthetic, and bio-based chemistries have played a critical role in the triggered creation and customization of next-generation hydrogel biomaterials. We also chart how these advances stand to energize the translational pipeline of hydrogels from bench to market and close with an outlook on outstanding opportunities and challenges that lay ahead.
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Affiliation(s)
- Ryan Gharios
- Department of Chemical Engineering, University of Washington, Seattle WA 98105, USA
| | - Ryan M. Francis
- Department of Chemical Engineering, University of Washington, Seattle WA 98105, USA
| | - Cole A. DeForest
- Department of Chemical Engineering, University of Washington, Seattle WA 98105, USA
- Department of Bioengineering, University of Washington, Seattle WA 98105, USA
- Department of Chemistry, University of Washington, Seattle WA 98105, USA
- Institute of Stem Cell & Regenerative Medicine, University of Washington, Seattle WA 98109, USA
- Molecular Engineering & Sciences Institute, University of Washington, Seattle WA 98105, USA
- Institute for Protein Design, University of Washington, Seattle WA 98105, USA
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9
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McGuire K, He S, Gracie J, Bryson C, Zheng D, Clark AW, Koehnke J, France DJ, Nau WM, Lee TC, Peveler WJ. Supramolecular Click Chemistry for Surface Modification of Quantum Dots Mediated by Cucurbit[7]uril. ACS NANO 2023; 17:21585-21594. [PMID: 37922402 PMCID: PMC10655248 DOI: 10.1021/acsnano.3c06601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/05/2023]
Abstract
Cucurbiturils (CBs), barrel-shaped macrocyclic molecules, are capable of self-assembling at the surface of nanomaterials in their native state, via their carbonyl-ringed portals. However, the symmetrical two-portal structure typically leads to aggregated nanomaterials. We demonstrate that fluorescent quantum dot (QD) aggregates linked with CBs can be broken-up, retaining CBs adsorbed at their surface, via inclusion of guests in the CB cavity. Simultaneously, the QD surface is modified by a functional tail on the guest, thus the high affinity host-guest binding (logKa > 9) enables a non-covalent, click-like modification of the nanoparticles in aqueous solution. We achieved excellent modification efficiency in several functional QD conjugates as protein labels. Inclusion of weaker-binding guests (logKa = 4-6) enables subsequent displacement with stronger binders, realising modular switchable surface chemistries. Our general "hook-and-eye" approach to host-guest chemistry at nanomaterial interfaces will lead to divergent routes for nano-architectures with rich functionalities for theranostics and photonics in aqueous systems.
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Affiliation(s)
- Katie McGuire
- School
of Chemistry, Joseph Black Building, University
of Glasgow, Glasgow, G12 8QQ, United
Kingdom
| | - Suhang He
- School
of Science, Constructor University, Campus Ring 1, 28759 Bremen, Germany
| | - Jennifer Gracie
- School
of Chemistry, Joseph Black Building, University
of Glasgow, Glasgow, G12 8QQ, United
Kingdom
| | - Charlotte Bryson
- School
of Chemistry, Joseph Black Building, University
of Glasgow, Glasgow, G12 8QQ, United
Kingdom
| | - Dazhong Zheng
- School
of Chemistry, Joseph Black Building, University
of Glasgow, Glasgow, G12 8QQ, United
Kingdom
| | - Alasdair W. Clark
- James
Watt School of Engineering, Advanced Research Centre, University of Glasgow, Glasgow, G11 6EW, United
Kingdom
| | - Jesko Koehnke
- School
of Chemistry, Joseph Black Building, University
of Glasgow, Glasgow, G12 8QQ, United
Kingdom
- Institut
für Lebensmittelchemie, Leibniz Universität
Hannover, Callinstr 5, 30167 Hannover, Germany
| | - David J. France
- School
of Chemistry, Joseph Black Building, University
of Glasgow, Glasgow, G12 8QQ, United
Kingdom
| | - Werner M. Nau
- School
of Science, Constructor University, Campus Ring 1, 28759 Bremen, Germany
| | - Tung-Chun Lee
- Institute
for Materials Discovery, University College
London, London, WC1H 0AJ, United Kingdom
- Department
of Chemistry, University College London, London, WC1H 0AJ, United Kingdom
| | - William J. Peveler
- School
of Chemistry, Joseph Black Building, University
of Glasgow, Glasgow, G12 8QQ, United
Kingdom
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10
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Widener AE, Roberts A, Phelps EA. Single versus dual microgel species for forming guest-host microporous annealed particle PEG-MAL hydrogel. J Biomed Mater Res A 2023; 111:1379-1389. [PMID: 37010360 PMCID: PMC10909382 DOI: 10.1002/jbm.a.37540] [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: 10/16/2022] [Revised: 03/03/2023] [Accepted: 03/20/2023] [Indexed: 04/04/2023]
Abstract
Inter-particle secondary crosslinks allow microporous annealed particle (MAP) hydrogels to be formed. Methods to introduce secondary crosslinking networks in MAP hydrogels include particle jamming, annealing with covalent bonds, and reversible noncovalent interactions. Here, we investigate the effect of two different approaches to secondary crosslinking of polyethylene glycol (PEG) microgels via reversible guest-host interactions. We generated a dual-particle MAP-PEG hydrogel using two species of PEG microgels, one functionalized with the guest molecule, adamantane, and the other with the host molecule, β-cyclodextrin (Inter-MAP-PEG). In a different approach, a mono-particle MAP-PEG hydrogel was generated using one species of microgel functionalized with both guest and host molecules (Intra-MAP-PEG). The Intra-MAP-PEG formed a homogenous distribution due to the single type of microgels used. We then compared the mechanical properties of these two types of MAP-PEG hydrogels and found that Intra-MAP-PEG resulted in significantly softer gels with lower yield stress. We investigated the effect of intra-particle guest-host interactions through titrated weight percentage and the concentration of functional groups added to the hydrogel. We found that there was an ideal concentration of guest-host molecules that enables intra- and inter-particle guest-host interactions with sufficient covalent crosslinking. Based on these studies, Intra-MAP-PEG provides a homogeneous guest-host hydrogel that is shear-thinning with reversible secondary crosslinking.
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Affiliation(s)
- Adrienne E. Widener
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA
| | - Abilene Roberts
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA
| | - Edward A. Phelps
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA
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11
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Hafeez S, Aldana AA, Duimel H, Ruiter FAA, Decarli MC, Lapointe V, van Blitterswijk C, Moroni L, Baker MB. Molecular Tuning of a Benzene-1,3,5-Tricarboxamide Supramolecular Fibrous Hydrogel Enables Control over Viscoelasticity and Creates Tunable ECM-Mimetic Hydrogels and Bioinks. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2207053. [PMID: 36858040 DOI: 10.1002/adma.202207053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/03/2022] [Revised: 02/13/2023] [Indexed: 06/16/2023]
Abstract
Traditional synthetic covalent hydrogels lack the native tissue dynamics and hierarchical fibrous structure found in the extracellular matrix (ECM). These dynamics and fibrous nanostructures are imperative in obtaining the correct cell/material interactions. Consequently, the challenge to engineer functional dynamics in a fibrous hydrogel and recapitulate native ECM properties remains a bottle-neck to biomimetic hydrogel environments. Here, the molecular tuning of a supramolecular benzene-1,3,5-tricarboxamide (BTA) hydrogelator via simple modulation of hydrophobic substituents is reported. This tuning results in fibrous hydrogels with accessible viscoelasticity over 5 orders of magnitude, while maintaining a constant equilibrium storage modulus. BTA hydrogelators are created with systematic variations in the number of hydrophobic carbon atoms, and this is observed to control the viscoelasticity and stress-relaxation timescales in a logarithmic fashion. Some of these BTA hydrogels are shear-thinning, self-healing, extrudable, and injectable, and can be 3D printed into multiple layers. These hydrogels show high cell viability for chondrocytes and human mesenchymal stem cells, establishing their use in tissue engineering applications. This simple molecular tuning by changing hydrophobicity (with just a few carbon atoms) provides precise control over the viscoelasticity and 3D printability in fibrillar hydrogels and can be ported onto other 1D self-assembling structures. The molecular control and design of hydrogel network dynamics can push the field of supramolecular chemistry toward the design of new ECM-mimicking hydrogelators for numerous cell-culture and tissue-engineering applications and give access toward highly biomimetic bioinks for bioprinting.
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Affiliation(s)
- Shahzad Hafeez
- Department of Complex Tissue Regeneration, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, P.O. Box 616, Maastricht, 6200 MD, The Netherlands
| | - Ana A Aldana
- Department of Complex Tissue Regeneration, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, P.O. Box 616, Maastricht, 6200 MD, The Netherlands
| | - Hans Duimel
- Maastricht MultiModal Molecular Imaging (M4I) Institute, Maastricht University, P.O. Box 616, Maastricht, 6200 MD, The Netherlands
| | - Floor A A Ruiter
- Department of Complex Tissue Regeneration, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, P.O. Box 616, Maastricht, 6200 MD, The Netherlands
- Department of Cell Biology-Inspired Tissue Engineering, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, P.O. Box 616, Maastricht, 6200 MD, The Netherlands
| | - Monize Caiado Decarli
- Department of Complex Tissue Regeneration, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, P.O. Box 616, Maastricht, 6200 MD, The Netherlands
| | - Vanessa Lapointe
- Department of Cell Biology-Inspired Tissue Engineering, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, P.O. Box 616, Maastricht, 6200 MD, The Netherlands
| | - Clemens van Blitterswijk
- Department of Complex Tissue Regeneration, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, P.O. Box 616, Maastricht, 6200 MD, The Netherlands
| | - Lorenzo Moroni
- Department of Complex Tissue Regeneration, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, P.O. Box 616, Maastricht, 6200 MD, The Netherlands
| | - Matthew B Baker
- Department of Complex Tissue Regeneration, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, P.O. Box 616, Maastricht, 6200 MD, The Netherlands
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12
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Su B, Chi T, Ye Z, Xiang Y, Dong P, Liu D, Addonizio CJ, Webber MJ. Transient and Dissipative Host-Guest Hydrogels Regulated by Consumption of a Reactive Chemical Fuel. Angew Chem Int Ed Engl 2023; 62:e202216537. [PMID: 36598411 DOI: 10.1002/anie.202216537] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/22/2022] [Accepted: 01/04/2023] [Indexed: 01/05/2023]
Abstract
The transient self-assembly of molecules under the direction of a consumable fuel source is fundamental to biological processes such as cellular organization and motility. Such biomolecular assemblies exist in an out-of-equilibrium state, requiring continuous consumption of high energy molecules. At the same time, the creation of bioinspired supramolecular hydrogels has traditionally focused on associations occurring at the thermodynamic equilibrium state. Here, hydrogels are prepared from cucurbit[7]uril host-guest supramolecular interactions through transient physical crosslinking driven by the consumption of a reactive chemical fuel. Upon action from this fuel, the affinity and dynamics of CB[7]-guest recognition are altered. In this way, the lifetime of transient hydrogel formation and the dynamic modulus obtained are governed by fuel consumption, rather than being directed by equilibrium complex formation.
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Affiliation(s)
- Bo Su
- Department of Chemical & Biomolecular Engineering, University of Notre Dame, 46556, Notre Dame, IN, USA
| | - Teng Chi
- Department of Chemical & Biomolecular Engineering, University of Notre Dame, 46556, Notre Dame, IN, USA
| | - Zhou Ye
- Department of Chemical & Biomolecular Engineering, University of Notre Dame, 46556, Notre Dame, IN, USA
| | - Yuanhui Xiang
- Department of Chemical & Biomolecular Engineering, University of Notre Dame, 46556, Notre Dame, IN, USA
| | - Ping Dong
- Department of Chemical & Biomolecular Engineering, University of Notre Dame, 46556, Notre Dame, IN, USA
| | - Dongping Liu
- Department of Chemical & Biomolecular Engineering, University of Notre Dame, 46556, Notre Dame, IN, USA
| | - Christopher J Addonizio
- Department of Chemical & Biomolecular Engineering, University of Notre Dame, 46556, Notre Dame, IN, USA
| | - Matthew J Webber
- Department of Chemical & Biomolecular Engineering, University of Notre Dame, 46556, Notre Dame, IN, USA
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13
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Sun XR, Yang HP, Zhang W, Zhang S, Hu JH, Liu M, Zeng X, Li Q, Redshaw C, Tao Z, Xiao X. Supramolecular Room-Temperature Phosphorescent Hydrogel Based on Hexamethyl Cucurbit[5]uril for Cell Imaging. ACS APPLIED MATERIALS & INTERFACES 2023; 15:4668-4676. [PMID: 36640109 DOI: 10.1021/acsami.2c17891] [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] [Indexed: 06/17/2023]
Abstract
The host-guest interaction between hexamethyl cucurbit[5]uril (HmeQ[5]) and 1,4-diaminobenzene (DB) was investigated, and a new low-molecular-weight supramolecular gel was prepared by a simple heating/mixing cooling method. The structure and properties of the supramolecular gel were characterized. Results revealed that DB molecules did not enter the cavity of HmeQ[5] and that hydrogen bonding between the carbonyl group at the HmeQ[5] port and the DB amino groups, together with dipole-dipole interactions and outer wall interactions, were the main driving forces for the formation of the supramolecular gel. The HmeQ[5]/DB gel system exhibits temperature sensitivity. The phosphor 6-bromo-2-naphthol (BrNp) was embedded in the gel to give the gel fluorescent phosphorescence double emission. The double emission ability at room temperature can be attributed to the ordered microstructure of the supramolecular gel, which effectively avoids the nonradiative transition of BrNp. Meanwhile, HmeQ[5]/DB-BrNp has good biocompatibility and low biotoxicity, which is compatible with HeLa cells to achieve cytoplasmic staining of HeLa in the red channel. The supramolecular gels constructed by this supramolecular assembly strategy not only have good temperature sensitivity but also extend the application of Q[n]s in biomedical fields.
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Affiliation(s)
- Xi-Ran Sun
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Applied Chemistry, Guizhou University, Guiyang 550025, China
| | - Hai-Ping Yang
- Department of Nephrology, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China
| | - Wei Zhang
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Applied Chemistry, Guizhou University, Guiyang 550025, China
| | - Shuai Zhang
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Applied Chemistry, Guizhou University, Guiyang 550025, China
| | - Jian-Hang Hu
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Applied Chemistry, Guizhou University, Guiyang 550025, China
| | - Ming Liu
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Applied Chemistry, Guizhou University, Guiyang 550025, China
| | - Xi Zeng
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Applied Chemistry, Guizhou University, Guiyang 550025, China
| | - Qiu Li
- Department of Nephrology, Children's Hospital of Chongqing Medical University, National Clinical Research Center for Child Health and Disorders, Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing Key Laboratory of Pediatrics, Chongqing 400014, China
| | - Carl Redshaw
- Chemistry, School of Natural Sciences, University of Hull, Hull HU6 7RX, U.K
| | - Zhu Tao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Applied Chemistry, Guizhou University, Guiyang 550025, China
| | - Xin Xiao
- Key Laboratory of Macrocyclic and Supramolecular Chemistry of Guizhou Province, Applied Chemistry, Guizhou University, Guiyang 550025, China
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14
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Clauss ZS, Meudom R, Su B, VandenBerg MA, Saini SS, Webber MJ, Chou DHC, Kramer JR. Supramolecular Protein Stabilization with Zwitterionic Polypeptide-Cucurbit[7]uril Conjugates. Biomacromolecules 2023; 24:481-488. [PMID: 36512327 DOI: 10.1021/acs.biomac.2c01319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Protein aggregation is an obstacle for the development of new biopharmaceuticals, presenting challenges in shipping and storage of vital therapies. Though a variety of materials and methods have been explored, the need remains for a simple material that is biodegradable, nontoxic, and highly efficient at stabilizing protein therapeutics. In this work, we investigated zwitterionic polypeptides prepared using a rapid and scalable polymerization technique and conjugated to a supramolecular macrocycle host, cucurbit[7]uril, for the ability to inhibit aggregation of model protein therapeutics insulin and calcitonin. The polypeptides are based on the natural amino acid methionine, and zwitterion sulfonium modifications were compared to analogous cationic and neutral structures. Each polymer was end-modified with a single cucurbit[7]uril macrocycle to afford supramolecular recognition and binding to terminal aromatic amino acids on proteins. Only conjugates prepared from zwitterionic structures of sufficient chain lengths were efficient inhibitors of insulin aggregation and could also inhibit aggregation of calcitonin. This polypeptide exhibited no cytotoxicity in human cells even at concentrations that were five-fold of the intended therapeutic regime. We explored treatment of the zwitterionic polypeptides with a panel of natural proteases and found steady biodegradation as expected, supporting eventual clearance when used as a protein formulation additive.
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Affiliation(s)
- Zachary S Clauss
- Department of Biomedical Engineering, University of Utah, Salt Lake City, Utah 84112, United States
| | - Rolande Meudom
- Department of Pediatrics, Division of Diabetes and Endocrinology, Stanford University, Palo Alto, California 94304, United States
| | - Bo Su
- Department of Chemical Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Michael A VandenBerg
- Department of Chemical Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Simranpreet S Saini
- Department of Biomedical Engineering, University of Utah, Salt Lake City, Utah 84112, United States
| | - Matthew J Webber
- Department of Chemical Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Danny Hung-Chieh Chou
- Department of Pediatrics, Division of Diabetes and Endocrinology, Stanford University, Palo Alto, California 94304, United States
| | - Jessica R Kramer
- Department of Biomedical Engineering, University of Utah, Salt Lake City, Utah 84112, United States
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15
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Dai Y, Zhang Y, Zhang L, Song Z. Synthesis and Biological Evaluation of Paclitaxel-aminoguanidine Conjugates for Suppressing Breast Cancer. Curr Org Synth 2023; 20:890-896. [PMID: 36974410 DOI: 10.2174/1570179420666230327090545] [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: 09/23/2022] [Revised: 01/13/2023] [Accepted: 01/23/2023] [Indexed: 03/29/2023]
Abstract
BACKGROUND A combination of paclitaxel with antineoplastic agents or paclitaxel alone was used clinically for the treatment of metastatic breast cancer. However, paclitaxel has poor water solubility and limited effect on some metastatic breast cancers. Hence, novel paclitaxel derivatives are in demand. In addition, the inducible nitric oxide synthase inhibitor, and aminoguanidine has a synergistic antitumor effect with chemotherapeutics. OBJECTIVE This study aims to design and synthesize the paclitaxel-aminoguanidine conjugates. Upon cellular internalization, the novel paclitaxel-aminoguanidine conjugates could release paclitaxel and aminoguanidine with the aid of esterase and weak acids in cancer cells. METHODS Paclitaxel-aminoguanidine conjugates were synthesized using click chemistry. The biological activity of paclitaxel-aminoguanidine conjugates was evaluated by MTT assay, determination of nitric oxide, analysis of apoptosis and cell cycle, and wound healing assay. RESULTS Here, a novel paclitaxel-aminoguanidine conjugate was synthesized using click chemistry. Compared with paclitaxel, the water solubility of paclitaxel-aminoguanidine conjugates increased obviously. Upon cellular internalization, the novel paclitaxel-aminoguanidine conjugates released paclitaxel and aminoguanidine to synergistically inhibit the proliferation and metastasis of breast cancer cells with the aid of esterase and weak acids in cancer cells. The results of the MTT assay showed that compared with paclitaxel or the mixture of paclitaxel and aminoguanidine, the cytotoxicity of compound 4 against 4T1 cells was enhanced. As for apoptosis induced by these compounds, the paclitaxel-aminoguanidine conjugates also had a stronger ability to induce apoptosis than paclitaxel or the mixture of paclitaxel and aminoguanidine. The results of the scratch test showed that the anti-metastatic effect of the conjugate was the strongest among these tested compounds. CONCLUSION These findings indicate that paclitaxel-aminoguanidine conjugate is a promising anticancer agent worthy of further study.
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Affiliation(s)
- Yi Dai
- College of Pharmaceutical Science, Anhui Xinhua University, Hefei, 230088, China
| | - Yang Zhang
- The first affiliated hospital of the University of Science and Technology of China, Hefei, 230031, China
| | - Lvfeng Zhang
- College of Pharmaceutical Science, Anhui Xinhua University, Hefei, 230088, China
| | - Zurong Song
- College of Pharmaceutical Science, Anhui Xinhua University, Hefei, 230088, China
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16
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Xian S, VandenBerg MA, Xiang Y, Yu S, Webber MJ. Glucose-Responsive Injectable Thermogels via Dynamic-Covalent Cross-Linking of Pluronic Micelles. ACS Biomater Sci Eng 2022; 8:4873-4885. [DOI: 10.1021/acsbiomaterials.2c00979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Sijie Xian
- Department of Chemical & Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Michael A. VandenBerg
- Department of Chemical & Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Yuanhui Xiang
- Department of Chemical & Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Sihan Yu
- Department of Chemical & Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Matthew J. Webber
- Department of Chemical & Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
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17
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Ahmadi M, Nicolella P, Seiffert S. Network Percolation in Transient Polymer Networks with Temporal Hierarchy of Energy Dissipation. Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Mostafa Ahmadi
- Department of Chemistry, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Paola Nicolella
- Department of Chemistry, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
| | - Sebastian Seiffert
- Department of Chemistry, Johannes Gutenberg-Universität Mainz, Duesbergweg 10-14, D-55128 Mainz, Germany
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18
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Ye Z, Xiang Y, Monroe T, Yu S, Dong P, Xian S, Webber MJ. Polymeric Microneedle Arrays with Glucose-Sensing Dynamic-Covalent Bonding for Insulin Delivery. Biomacromolecules 2022; 23:4401-4411. [PMID: 36173091 DOI: 10.1021/acs.biomac.2c00878] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The ongoing rise in diabetes incidence necessitates improved therapeutic strategies to enable precise blood glucose control with convenient device form factors. Microneedle patches are one such device platform capable of achieving therapeutic delivery through the skin. In recent years, polymeric microneedle arrays have been reported using methods of in situ polymerization and covalent crosslinking in microneedle molds. In spite of promising results, in situ polymerization carries a risk of exposure to toxic unreacted precursors remaining in the device. Here, a polymeric microneedle patch is demonstrated that uses dynamic-covalent phenylboronic acid (PBA)-diol bonds in a dual role affording both network crosslinking and glucose sensing. By this approach, a pre-synthesized and purified polymer bearing pendant PBA motifs is combined with a multivalent diol crosslinker to prepare dynamic-covalent hydrogel networks. The ability of these dynamic hydrogels to shear-thin and self-heal enables their loading to a microneedle mold by centrifugation. Subsequent drying then yields a patch of uniformly shaped microneedles with the requisite mechanical properties to penetrate skin. Insulin release from these materials is accelerated in the presence of glucose. Moreover, short-term blood glucose control in a diabetic rat model following application of the device to the skin confirms insulin activity and bioavailability. Accordingly, dynamic-covalent crosslinking facilitates a route for fabricating microneedle arrays circumventing the toxicity concerns of in situ polymerization, offering a convenient device form factor for therapeutic insulin delivery.
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Affiliation(s)
- Zhou Ye
- Department of Chemical & Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556 United States
| | - Yuanhui Xiang
- Department of Chemical & Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556 United States
| | - Thomas Monroe
- Department of Chemical & Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556 United States
| | - Sihan Yu
- Department of Chemical & Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556 United States
| | - Ping Dong
- Department of Chemical & Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556 United States
| | - Sijie Xian
- Department of Chemical & Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556 United States
| | - Matthew J Webber
- Department of Chemical & Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556 United States
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19
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Cai P, Su B, Zou L, Webber MJ, Heilshorn SC, Spakowitz AJ. Rheological Characterization and Theoretical Modeling Establish Molecular Design Rules for Tailored Dynamically Associating Polymers. ACS CENTRAL SCIENCE 2022; 8:1318-1327. [PMID: 36188349 PMCID: PMC9523779 DOI: 10.1021/acscentsci.2c00432] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Indexed: 05/15/2023]
Abstract
Dynamically associating polymers have long been of interest due to their highly tunable viscoelastic behavior. Many applications leverage this tunability to create materials that have specific rheological properties, but designing such materials is an arduous, iterative process. Current models for dynamically associating polymers are phenomenological, assuming a structure for the relationship between association kinetics and network relaxation. We present the Brachiation model, a molecular-level theory of a polymer network with dynamic associations that is rooted in experimentally controllable design parameters, replacing the iterative experimental process with a predictive model for how experimental modifications to the polymer will impact rheological behavior. We synthesize hyaluronic acid chains modified with supramolecular host-guest motifs to serve as a prototypical dynamic network exhibiting tunable physical properties through control of polymer concentration and association rates. We use dynamic light scattering microrheology to measure the linear viscoelasticity of these polymers across six decades in frequency and fit our theory parameters to the measured data. The parameters are then altered by a magnitude corresponding to changes made to the experimental parameters and used to obtain new rheological predictions that match the experimental results well, demonstrating the ability for this theory to inform the design process of dynamically associating polymeric materials.
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Affiliation(s)
- Pamela
C. Cai
- Department
of Chemical Engineering, Stanford University, Stanford, California 94305, United States
| | - Bo Su
- Department
of Chemical & Biomolecular Engineering, University of Notre Dame, Notre
Dame, Indiana 46556, United States
| | - Lei Zou
- Department
of Chemical & Biomolecular Engineering, University of Notre Dame, Notre
Dame, Indiana 46556, United States
| | - Matthew J. Webber
- Department
of Chemical & Biomolecular Engineering, University of Notre Dame, Notre
Dame, Indiana 46556, United States
| | - Sarah C. Heilshorn
- Department
of Materials Science and Engineering, Stanford
University, Stanford, California 94305, United States
| | - Andrew J. Spakowitz
- Department
of Chemical Engineering, Stanford University, Stanford, California 94305, United States
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20
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Diboronate crosslinking: Introducing glucose specificity in glucose-responsive dynamic-covalent networks. J Control Release 2022; 348:601-611. [PMID: 35714732 DOI: 10.1016/j.jconrel.2022.06.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 05/24/2022] [Accepted: 06/10/2022] [Indexed: 11/21/2022]
Abstract
Dynamic-covalent motifs are increasingly used for hydrogel crosslinking, leveraging equilibrium-governed reversible bonds to prepare viscoelastic materials with dynamic properties and self-healing character. The bonding between aryl boronates and diols is one dynamic-covalent chemistry of interest. The extent of network crosslinking using this motif may be subject to competition from ambient diols such as glucose; this approach has long been explored for glucose-directed release of insulin to control diabetes. However, the majority of such work has used phenylboronic acids (PBAs) that suffer from low-affinity glucose binding, limiting material responsiveness. Moreover, many PBA chemistries also bind with higher affinity to certain non-glucose analytes like fructose and lactate than they do to glucose, limiting their specificity of sensing and therapeutic deployment. Here, dynamic-covalent hydrogels are prepared that, for the first time, use a new diboronate motif with enhanced glucose binding-and importantly improved glucose specificity-leveraging the ability of rigid diboronates to simultaneously bind two sites on a single glucose molecule. Compared to long-used PBA-based approaches, diboronate hydrogels offer more glucose-responsive insulin release that is minimally impacted by non-glucose analytes. Improved responsiveness translates to more rapid blood glucose correction in a rodent diabetes model. Accordingly, this new dynamic-covalent crosslinking chemistry is useful in realizing more sensitive and specific glucose-responsive materials.
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21
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Braegelman AS, Ollier RC, Su B, Addonizio CJ, Zou L, Cole SL, Webber MJ. Macromolecular Solute Transport in Supramolecular Hydrogels Spanning Dynamic to Quasi-Static States. ACS APPLIED BIO MATERIALS 2022; 5:10.1021/acsabm.2c00165. [PMID: 35623099 PMCID: PMC10019485 DOI: 10.1021/acsabm.2c00165] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Hydrogels prepared from supramolecular cross-linking motifs are appealing for use as biomaterials and drug delivery technologies. The inclusion of macromolecules (e.g., protein therapeutics) in these materials is relevant to many of their intended uses. However, the impact of dynamic network cross-linking on macromolecule diffusion must be better understood. Here, hydrogel networks with identical topology but disparate cross-link dynamics are explored. These materials are prepared from cross-linking with host-guest complexes of the cucurbit[7]uril (CB[7]) macrocycle and two guests of different affinity. Rheology confirms differences in bulk material dynamics arising from differences in cross-link thermodynamics. Fluorescence recovery after photobleaching (FRAP) provides insight into macromolecule diffusion as a function of probe molecular weight and hydrogel network dynamics. Together, both rheology and FRAP enable the estimation of the mean network mesh size, which is then related to the solute hydrodynamic diameters to further understand macromolecule diffusion. Interestingly, the thermodynamics of host-guest cross-linking are correlated with a marked deviation from classical diffusion behavior for higher molecular weight probes, yielding solute aggregation in high-affinity networks. These studies offer insights into fundamental macromolecular transport phenomena as they relate to the association dynamics of supramolecular networks. Translation of these materials from in vitro to in vivo is also assessed by bulk release of an encapsulated macromolecule. Contradictory in vitro to in vivo results with inverse relationships in release between the two hydrogels underscores the caution demanded when translating supramolecular biomaterials into application.
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Affiliation(s)
- Adam S. Braegelman
- University of Notre Dame, Department of Chemical & Biomolecular Engineering, Notre Dame, IN 46556 USA
- University of Notre Dame, Bioengineering PhD Program, Notre Dame, IN 46556 USA
| | - Rachel C. Ollier
- University of Notre Dame, Department of Chemical & Biomolecular Engineering, Notre Dame, IN 46556 USA
| | - Bo Su
- University of Notre Dame, Department of Chemical & Biomolecular Engineering, Notre Dame, IN 46556 USA
| | - Christopher J. Addonizio
- University of Notre Dame, Department of Chemical & Biomolecular Engineering, Notre Dame, IN 46556 USA
| | - Lei Zou
- University of Notre Dame, Department of Chemical & Biomolecular Engineering, Notre Dame, IN 46556 USA
| | - Sara L. Cole
- University of Notre Dame, Integrated Imaging Facility, Notre Dame, IN 46556 USA
| | - Matthew J. Webber
- University of Notre Dame, Department of Chemical & Biomolecular Engineering, Notre Dame, IN 46556 USA
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22
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Madl AC, Myung D. Supramolecular Host-Guest Hydrogels for Corneal Regeneration. Gels 2021; 7:163. [PMID: 34698163 PMCID: PMC8544529 DOI: 10.3390/gels7040163] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2021] [Revised: 09/28/2021] [Accepted: 09/30/2021] [Indexed: 12/12/2022] Open
Abstract
Over 6.2 million people worldwide suffer from moderate to severe vision loss due to corneal disease. While transplantation with allogenic donor tissue is sight-restoring for many patients with corneal blindness, this treatment modality is limited by long waiting lists and high rejection rates, particularly in patients with severe tissue damage and ocular surface pathologies. Hydrogel biomaterials represent a promising alternative to donor tissue for scalable, nonimmunogenic corneal reconstruction. However, implanted hydrogel materials require invasive surgeries and do not precisely conform to tissue defects, increasing the risk of patient discomfort, infection, and visual distortions. Moreover, most hydrogel crosslinking chemistries for the in situ formation of hydrogels exhibit off-target effects such as cross-reactivity with biological structures and/or result in extractable solutes that can have an impact on wound-healing and inflammation. To address the need for cytocompatible, minimally invasive, injectable tissue substitutes, host-guest interactions have emerged as an important crosslinking strategy. This review provides an overview of host-guest hydrogels as injectable therapeutics and highlights the potential application of host-guest interactions in the design of corneal stromal tissue substitutes.
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Affiliation(s)
- Amy C. Madl
- Department of Chemical Engineering, Stanford University, Stanford, CA 94305, USA;
| | - David Myung
- Department of Chemical Engineering, Stanford University, Stanford, CA 94305, USA;
- Byers Eye Institute, Stanford University School of Medicine, Palo Alto, CA 94303, USA
- VA Palo Alto Health Care System, Palo Alto, CA 94304, USA
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23
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Chen H, Zhang J, Yu W, Cao Y, Cao Z, Tan Y. Control Viscoelasticity of Polymer Networks with Crosslinks of Superposed Fast and Slow Dynamics. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202105112] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Hao Chen
- School of Chemistry and Chemical Engineering Shandong University Jinan 250100 P. R. China
- The Key Laboratory of Special Functional Aggregated Materials Ministry of Education Shandong University Jinan 250100 P. R. China
| | - Jin Zhang
- School of Chemistry and Chemical Engineering Shandong University Jinan 250100 P. R. China
- The Key Laboratory of Special Functional Aggregated Materials Ministry of Education Shandong University Jinan 250100 P. R. China
| | - Wenting Yu
- Collaborative Innovation Center of Advanced Microstructures National Laboratory of Solid State Microstructure, and Department of Physics Nanjing University Nanjing 210093 P. R. China
| | - Yi Cao
- Collaborative Innovation Center of Advanced Microstructures National Laboratory of Solid State Microstructure, and Department of Physics Nanjing University Nanjing 210093 P. R. China
| | - Zhaozhen Cao
- School of Chemistry and Chemical Engineering Shandong University Jinan 250100 P. R. China
| | - Yebang Tan
- School of Chemistry and Chemical Engineering Shandong University Jinan 250100 P. R. China
- The Key Laboratory of Special Functional Aggregated Materials Ministry of Education Shandong University Jinan 250100 P. R. China
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24
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Chen H, Zhang J, Yu W, Cao Y, Cao Z, Tan Y. Control Viscoelasticity of Polymer Networks with Crosslinks of Superposed Fast and Slow Dynamics. Angew Chem Int Ed Engl 2021; 60:22332-22338. [PMID: 34008254 DOI: 10.1002/anie.202105112] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Revised: 05/17/2021] [Indexed: 11/10/2022]
Abstract
Depending on the dynamics of the crosslinks, polymer networks can have distinct bulk mechanical behaviors, from viscous liquids to tough solids. Here, by means of designing a crosslink with variable molecular dynamics, we show the control of viscoelasticity of polymer networks in a broad range quantitatively. The hexanoate-isoquinoline@cucurbit[7]uril (HIQ@CB[7]) crosslink exhibits in a combination of protonated and deprotonated states of similar association affinity but distinct molecular dynamics. The molecular property of this crosslink is contributed by linear combination of the parameters at the two states, which is precisely tuned by pH. Using this crosslink, we achieve the quantitative control of viscoelasticity of quasi-ideal networks in 5 orders of magnitude, and we show the reversible control of mechanical response, such as stiffness, strength and extensibility, of tough random polymer networks. This strategy offers a way to tailor the mechanical properties of polymer networks at the molecular level and paves the way for engineering "smart" responsive materials.
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Affiliation(s)
- Hao Chen
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China.,The Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, Shandong University, Jinan, 250100, P. R. China
| | - Jin Zhang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China.,The Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, Shandong University, Jinan, 250100, P. R. China
| | - Wenting Yu
- Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructure, and Department of Physics, Nanjing University, Nanjing, 210093, P. R. China
| | - Yi Cao
- Collaborative Innovation Center of Advanced Microstructures, National Laboratory of Solid State Microstructure, and Department of Physics, Nanjing University, Nanjing, 210093, P. R. China
| | - Zhaozhen Cao
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China
| | - Yebang Tan
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China.,The Key Laboratory of Special Functional Aggregated Materials, Ministry of Education, Shandong University, Jinan, 250100, P. R. China
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25
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Addonizio CJ, Gates BD, Webber MJ. Supramolecular "Click Chemistry" for Targeting in the Body. Bioconjug Chem 2021; 32:1935-1946. [PMID: 34415139 DOI: 10.1021/acs.bioconjchem.1c00326] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The fields of precision imaging and drug delivery have revealed a number of tools to improve target specificity and increase efficacy in diagnosing and treating disease. Biological molecules, such as antibodies, continue to be the primary means of assuring active targeting of various payloads. However, molecular-scale recognition motifs have emerged in recent decades to achieve specificity through the design of interacting chemical motifs. In this regard, an assortment of bioorthogonal covalent conjugations offer possibilities for in situ complexation under physiological conditions. Herein, a related concept is discussed that leverages interactions from noncovalent or supramolecular motifs to facilitate in situ recognition and complex formation in the body. Classic supramolecular motifs based on host-guest complexation offer one such means of facilitating recognition. In addition, synthetic bioinspired motifs based on oligonucleotide hybridization and coiled-coil peptide bundles afford other routes to form complexes in situ. The architectures to include recognition of these various motifs for targeting enable both monovalent and multivalent presentation, seeking high affinity or engineered avidity to facilitate conjugation even under dilute conditions of the body. Accordingly, supramolecular "click chemistry" offers a complementary tool in the growing arsenal targeting improved healthcare efficacy.
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Affiliation(s)
- Christopher J Addonizio
- University of Notre Dame, Department of Chemical & Biomolecular Engineering, Notre Dame, Indiana 46556 United States
| | - Brant D Gates
- University of Notre Dame, Department of Chemical & Biomolecular Engineering, Notre Dame, Indiana 46556 United States
| | - Matthew J Webber
- University of Notre Dame, Department of Chemical & Biomolecular Engineering, Notre Dame, Indiana 46556 United States
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26
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Maikawa CL, d’Aquino AI, Vuong ET, Su B, Zou L, Chen PC, Nguyen LT, Autzen AAA, Mann JL, Webber MJ, Appel EA. Affinity-Directed Dynamics of Host-Guest Motifs for Pharmacokinetic Modulation via Supramolecular PEGylation. Biomacromolecules 2021; 22:3565-3573. [PMID: 34314146 PMCID: PMC8627827 DOI: 10.1021/acs.biomac.1c00648] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Proteins are an impactful class of therapeutics but can exhibit suboptimal therapeutic performance, arising from poor control over the timescale of clearance. Covalent PEGylation is one established strategy to extend circulation time but often at the cost of reduced activity and increased immunogenicity. Supramolecular PEGylation may afford similar benefits without necessitating that the protein be permanently modified with a polymer. Here, we show that insulin pharmacokinetics can be modulated by tuning the affinity-directed dynamics of a host-guest motif used to non-covalently endow insulin with a poly(ethylene glycol) (PEG) chain. When administered subcutaneously, supramolecular PEGylation with higher binding affinities extends the time of total insulin exposure systemically. Pharmacokinetic modeling reveals that the extension in the duration of exposure arises specifically from decreased absorption from the subcutaneous depot governed directly by the affinity and dynamics of host-guest exchange. The lifetime of the supramolecular interaction thus dictates the rate of absorption, with negligible impact attributed to association of the PEG upon rapid dilution of the supramolecular complex in circulation. This modular approach to supramolecular PEGylation offers a powerful tool to tune protein pharmacokinetics in response to the needs of different disease applications.
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Affiliation(s)
- Caitlin L. Maikawa
- Department of Bioengineering, Stanford University, Stanford, CA, 94305, USA
| | - Andrea I. d’Aquino
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA
| | - Eric T. Vuong
- Department of Bioengineering, Stanford University, Stanford, CA, 94305, USA
| | - Bo Su
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Lei Zou
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Peyton C. Chen
- Department of Bioengineering, Stanford University, Stanford, CA, 94305, USA
| | - Leslee T. Nguyen
- Department of Biochemistry, Stanford University, Stanford, CA, 94305, USA
| | - Anton A. A. Autzen
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA
- Department of Science and Technology, Aarhus University, 8000 Aarhus, Denmark
| | - Joseph L. Mann
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA
| | - Matthew J. Webber
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Eric A. Appel
- Department of Bioengineering, Stanford University, Stanford, CA, 94305, USA
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA
- Department of Endocrinology (Pediatrics), Stanford University, Stanford, CA, 94305, USA
- ChEM-H Institute, Stanford University, Stanford, CA, 94305, USA
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27
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Pan Z, Bui L, Yadav V, Fan F, Chang HC, Hanjaya-Putra D. Conformal single cell hydrogel coating with electrically induced tip streaming of an AC cone. Biomater Sci 2021; 9:3284-3292. [PMID: 33949367 PMCID: PMC8127873 DOI: 10.1039/d0bm02100h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Encapsulation of single cells in a thin hydrogel provides a more precise control of stem cell niches and better molecular transport. Despite the recent advances in microfluidic technologies to allow encapsulation of single cells, existing methods rely on special crosslinking agents that are pre-coated on the cell surface and subject to the variation of the cell membrane, which limits their widespread adoption. This work reports a high-throughput single-cell encapsulation method based on the "tip streaming" mode of alternating current (AC) electrospray, with encapsulation efficiencies over 80% after tuned centrifugation. Dripping with multiple cells is curtailed due to gating by the sharp conic meniscus of the tip streaming mode that only allows one cell to be ejected at a time. Moreover, the method can be universally applied to both natural and synthetic hydrogels, as well as various cell types, including human multipotent mesenchymal stromal cells (hMSCs). Encapsulated hMSCs maintain good cell viability over an extended culture period and exhibit robust differentiation potential into osteoblasts and adipocytes. Collectively, electrically induced tip streaming enables high-throughput encapsulation of single cells with high efficiency and universality, which is applicable for various applications in cell therapy, pharmacokinetic studies, and regenerative medicine.
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Affiliation(s)
- Zehao Pan
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, IN 46556, USA.
| | - Loan Bui
- Department of Aerospace and Mechanical Engineering, Bioengineering Graduate Program, University of Notre Dame, IN 46556, USA
| | - Vivek Yadav
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, IN 46556, USA.
| | - Fei Fan
- Department of Aerospace and Mechanical Engineering, Bioengineering Graduate Program, University of Notre Dame, IN 46556, USA
| | - Hsueh-Chia Chang
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, IN 46556, USA. and Department of Aerospace and Mechanical Engineering, Bioengineering Graduate Program, University of Notre Dame, IN 46556, USA and Harper Cancer Research Institute, University of Notre Dame, IN 46556, USA
| | - Donny Hanjaya-Putra
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, IN 46556, USA. and Department of Aerospace and Mechanical Engineering, Bioengineering Graduate Program, University of Notre Dame, IN 46556, USA and Harper Cancer Research Institute, University of Notre Dame, IN 46556, USA
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28
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Webber MJ, Pashuck ET. (Macro)molecular self-assembly for hydrogel drug delivery. Adv Drug Deliv Rev 2021; 172:275-295. [PMID: 33450330 PMCID: PMC8107146 DOI: 10.1016/j.addr.2021.01.006] [Citation(s) in RCA: 68] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Revised: 12/29/2020] [Accepted: 01/04/2021] [Indexed: 01/15/2023]
Abstract
Hydrogels prepared via self-assembly offer scalable and tunable platforms for drug delivery applications. Molecular-scale self-assembly leverages an interplay of attractive and repulsive forces; drugs and other active molecules can be incorporated into such materials by partitioning in hydrophobic domains, affinity-mediated binding, or covalent integration. Peptides have been widely used as building blocks for self-assembly due to facile synthesis, ease of modification with bioactive molecules, and precise molecular-scale control over material properties through tunable interactions. Additional opportunities are manifest in stimuli-responsive self-assembly for more precise drug action. Hydrogels can likewise be fabricated from macromolecular self-assembly, with both synthetic polymers and biopolymers used to prepare materials with controlled mechanical properties and tunable drug release. These include clinical approaches for solubilization and delivery of hydrophobic drugs. To further enhance mechanical properties of hydrogels prepared through self-assembly, recent work has integrated self-assembly motifs with polymeric networks. For example, double-network hydrogels capture the beneficial properties of both self-assembled and covalent networks. The expanding ability to fabricate complex and precise materials, coupled with an improved understanding of biology, will lead to new classes of hydrogels specifically tailored for drug delivery applications.
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Affiliation(s)
- Matthew J Webber
- University of Notre Dame, Department of Chemical & Biomolecular Engineering, Notre Dame, IN 46556, USA.
| | - E Thomas Pashuck
- Lehigh University, Department of Bioengineering, Bethlehem, PA 18015, USA.
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29
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Abstract
Hydrogels comprise a class of soft materials which are extremely useful in a number of contexts, for example as matrix-mimetic biomaterials for applications in regenerative medicine and drug delivery. One particular subclass of hydrogels consists of materials prepared through non-covalent physical crosslinking afforded by supramolecular recognition motifs. The dynamic, reversible, and equilibrium-governed features of these molecular-scale motifs often transcend length-scales to endow the resulting hydrogels with these same properties on the bulk scale. In efforts to engineer hydrogels of all types with more precise or application-specific uses, inclusion of stimuli-responsive sol-gel transformations has been broadly explored. In the context of biomedical uses, temperature is an interesting stimulus which has been the focus of numerous hydrogel designs, supramolecular or otherwise. Most supramolecular motifs are inherently temperature-sensitive, with elevated temperatures commonly disfavoring motif formation and/or accelerating its dissociation. In addition, supramolecular motifs have also been incorporated for physical crosslinking in conjunction with polymeric or macromeric building blocks which themselves exhibit temperature-responsive changes to their properties. Through molecular-scale engineering of supramolecular recognition, and selection of a particular motif or polymeric/macromeric backbone, it is thus possible to devise a number of supramolecular hydrogel materials to empower a variety of future biomedical applications.
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Affiliation(s)
- Sijie Xian
- Department of Chemical & Biomolecular Engineering, University of Notre Dame, Notre Dame, IN 46556, USA.
| | - Matthew J Webber
- Department of Chemical & Biomolecular Engineering, University of Notre Dame, Notre Dame, IN 46556, USA.
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30
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Bernhard S, Tibbitt MW. Supramolecular engineering of hydrogels for drug delivery. Adv Drug Deliv Rev 2021; 171:240-256. [PMID: 33561451 DOI: 10.1016/j.addr.2021.02.002] [Citation(s) in RCA: 118] [Impact Index Per Article: 39.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2020] [Revised: 01/27/2021] [Accepted: 02/03/2021] [Indexed: 02/06/2023]
Abstract
Supramolecular binding motifs are increasingly employed in the design of biomaterials. The ability to rationally engineer specific yet reversible associations into polymer networks with supramolecular chemistry enables injectable or sprayable hydrogels that can be applied via minimally invasive administration. In this review, we highlight two main areas where supramolecular binding motifs are being used in the design of drug delivery systems: engineering network mechanics and tailoring drug-material affinity. Throughout, we highlight many of the established and emerging chemistries or binding motifs that are useful for the design of supramolecular hydrogels for drug delivery applications.
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31
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Realizing tissue integration with supramolecular hydrogels. Acta Biomater 2021; 124:1-14. [PMID: 33508507 DOI: 10.1016/j.actbio.2021.01.034] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2020] [Revised: 01/04/2021] [Accepted: 01/21/2021] [Indexed: 12/17/2022]
Abstract
Biomaterial matrices must permit tissue growth and maturation for the success of tissue regeneration strategies. Naturally, this accommodation is achieved via the dynamic remodeling of a cell's extracellular matrix (ECM). Synthetically, hydrolytic or enzymatic degradation are often engineered into materials for this purpose. More recently, supramolecular interactions have been used to provide a biomimetic and tunable mechanism to facilitate tissue formation via their dynamic and reversible non-covalent interactions. By engineering the mechanical and bioactive properties of a material, supramolecular chemists are able to design permissivity into the construct and facilitate tissue integration in-vivo. Furthermore, via the reversibility of non-covalent interactions, injectability and responsiveness can be designed for enhanced delivery and spatio-temporal control. In this review, we delineate the basic considerations needed when designing permissive supramolecular hydrogels for tissue engineering with an eye toward tissue growth and integration. We highlight three archetypal hydrogel systems that have shown well-documented tissue integration in vivo, and provide avenues to assess tissue in-growth. Careful design and assessment of the biomedical potential of a supramolecular hydrogels can inspire the creation of robust and dynamic implants for new tissue engineering applications.
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32
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Widener AE, Bhatta M, Angelini TE, Phelps EA. Guest-host interlinked PEG-MAL granular hydrogels as an engineered cellular microenvironment. Biomater Sci 2021; 9:2480-2493. [PMID: 33432940 DOI: 10.1039/d0bm01499k] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
We report the development of a polyethylene glycol (PEG) hydrogel scaffold that provides the advantages of conventional bulk PEG hydrogels for engineering cellular microenvironments and allows for rapid cell migration. PEG microgels were used to assemble a densely packed granular system with an intrinsic interstitium-like negative space. In this material, guest-host molecular interactions provide reversible non-covalent linkages between discrete PEG microgel particles to form a cohesive bulk material. In guest-host chemistry, different guest molecules reversibly and non-covalently interact with their cyclic host molecules. Two species of PEG microgels were made, each with one functional group at the end of the four arm PEG-MAL functionalized using thiol click chemistry. The first was functionalized with the host molecule β-cyclodextrin, a cyclic oligosaccharide of repeating d-glucose units, and the other functionalized with the guest molecule adamantane. These two species provide a reversible guest-host interaction between microgel particles when mixed, generating an interlinked network with a percolated interstitium. We showed that this granular configuration, unlike conventional bulk PEG hydrogels, enabled the rapid migration of THP-1 monocyte cells. The guest-host microgels also exhibited shear-thinning behavior, providing a unique advantage over current bulk PEG hydrogels.
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Affiliation(s)
- Adrienne E Widener
- J. Crayton Pruitt Family Department of Biomedical Engineering, University of Florida, Gainesville, FL, USA.
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33
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Dennis JM, Savage AM, Mrozek RA, Lenhart JL. Stimuli‐responsive mechanical properties in polymer glasses: challenges and opportunities for defense applications. POLYM INT 2020. [DOI: 10.1002/pi.6154] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Joseph M Dennis
- United States Army Research Laboratory Aberdeen Proving Ground Adelphi MD USA
| | - Alice M Savage
- United States Army Research Laboratory Aberdeen Proving Ground Adelphi MD USA
| | - Randy A Mrozek
- United States Army Research Laboratory Aberdeen Proving Ground Adelphi MD USA
| | - Joseph L Lenhart
- United States Army Research Laboratory Aberdeen Proving Ground Adelphi MD USA
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34
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Lopez Hernandez H, Souza JW, Appel EA. A Quantitative Description for Designing the Extrudability of Shear-Thinning Physical Hydrogels. Macromol Biosci 2020; 21:e2000295. [PMID: 33164332 DOI: 10.1002/mabi.202000295] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 10/19/2020] [Indexed: 12/12/2022]
Abstract
Physically associated hydrogels (PHs) capable of reversible transitions between solid and liquid-like states have enabled novel strategies for 3D printing, therapeutic drug and cell delivery, and regenerative medicine. Among the many design criteria (e.g., viscoelasticity, cargo diffusivity, biocompatibility) for these applications, engineering PHs for extrudability is a necessary and critical design criterion for the successful application of these materials. As the development of many distinct PH material systems continues, a strategy to determine the extrudability of PHs a priori will be exceedingly useful for reducing costly and time-consuming trial-and-error experimentation. Here, a strategy to determine the property-function relationships for PHs in injectable drug delivery applications at clinically relevant flow rates is presented. This strategy-validated with two chemically and physically distinct PHs-reveals material design spaces in the form of Ashby-style plots that highlight acceptable, application-specific material properties. It is shown that the flow behavior of PHs does not obey a single shear-thinning power law and the implications for injectable drug delivery are discussed. This approach for generating design criteria has potential for streamlining the screening of PHs and their utility in applications with varying geometrical (i.e., needle diameter) and process (i.e., flow rate) constraints.
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Affiliation(s)
| | - Jason W Souza
- Materials Science and Engineering, Stanford University, Stanford, CA, 94305, USA
| | - Eric A Appel
- Department of Bioengineering, Stanford University, Stanford, CA, 94305, USA.,ChEM-H Institute, Stanford University, Stanford, CA, 94305, USA
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35
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Olson JE, Braegelman AS, Zou L, Webber MJ, Camden JP. Capture of Phenylalanine and Phenylalanine-Terminated Peptides Using a Supramolecular Macrocycle for Surface-Enhanced Raman Scattering Detection. APPLIED SPECTROSCOPY 2020; 74:1374-1383. [PMID: 32508116 DOI: 10.1177/0003702820937333] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The cucurbit[n]uril (CB[n]) family of macrocycles are known to bind a variety of small molecules with high affinity. These motifs thus have promise in an ever-growing list of trace detection methods. Surface-enhanced Raman scattering (SERS) detection schemes employing CB[n] motifs exhibit increased sensitivity due to selective concentration of the analyte at the nanoparticle surface, coupled with the ability of CB[n] to facilitate the formation of well-defined electromagnetic hot spots. Herein, we report a CB[7] SERS assay for quantification of phenylalanine (Phe) and further demonstrate its utility for detecting peptides with an N-terminal Phe. The CB[7]-guest interaction improves the sensitivity 5-25-fold over direct detection of Phe using citrate-capped silver nanoparticle aggregates, enabling use of a portable Raman system. We further illustrate detection of insulin via binding of CB[7] to the N-terminal Phe residue on its B-chain, suggesting a general strategy for detecting Phe-terminated peptides of clinically relevant biomolecules.
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Affiliation(s)
- Jacob E Olson
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, USA
| | - Adam S Braegelman
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, USA
| | - Lei Zou
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, USA
| | - Matthew J Webber
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, USA
| | - Jon P Camden
- Department of Chemistry and Biochemistry, University of Notre Dame, Notre Dame, USA
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36
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Lee SC, Gillispie G, Prim P, Lee SJ. Physical and Chemical Factors Influencing the Printability of Hydrogel-based Extrusion Bioinks. Chem Rev 2020; 120:10834-10886. [PMID: 32815369 PMCID: PMC7673205 DOI: 10.1021/acs.chemrev.0c00015] [Citation(s) in RCA: 80] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Bioprinting researchers agree that "printability" is a key characteristic for bioink development, but neither the meaning of the term nor the best way to experimentally measure it has been established. Furthermore, little is known with respect to the underlying mechanisms which determine a bioink's printability. A thorough understanding of these mechanisms is key to the intentional design of new bioinks. For the purposes of this review, the domain of printability is defined as the bioink requirements which are unique to bioprinting and occur during the printing process. Within this domain, the different aspects of printability and the factors which influence them are reviewed. The extrudability, filament classification, shape fidelity, and printing accuracy of bioinks are examined in detail with respect to their rheological properties, chemical structure, and printing parameters. These relationships are discussed and areas where further research is needed, are identified. This review serves to aid the bioink development process, which will continue to play a major role in the successes and failures of bioprinting, tissue engineering, and regenerative medicine going forward.
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Affiliation(s)
- Sang Cheon Lee
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina 27157 , USA
- Department of Maxillofacial Biomedical Engineering and Institute of Oral Biology, School of Dentistry, Kyung Hee University, Seoul 02447, Republic of Korea
| | - Gregory Gillispie
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina 27157 , USA
- School of Biomedical Engineering and Sciences, Wake Forest University-Virginia Tech, Winston-Salem, North Carolina 27157, USA
| | - Peter Prim
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina 27157 , USA
| | - Sang Jin Lee
- Wake Forest Institute for Regenerative Medicine, Wake Forest School of Medicine, Winston-Salem, North Carolina 27157 , USA
- School of Biomedical Engineering and Sciences, Wake Forest University-Virginia Tech, Winston-Salem, North Carolina 27157, USA
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37
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Zou L, Addonizio CJ, Su B, Sis MJ, Braegelman AS, Liu D, Webber MJ. Supramolecular Hydrogels via Light-Responsive Homoternary Cross-Links. Biomacromolecules 2020; 22:171-182. [PMID: 32804483 DOI: 10.1021/acs.biomac.0c00950] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Host-guest physical cross-linking has been used to prepare supramolecular hydrogels for various biomedical applications. More recent efforts to endow these materials with stimuli-responsivity offers an opportunity to precisely tune their function for a target use. In the context of light-responsive materials, azobenzenes are one prevailing motif. Here, an asymmetric azobenzene was explored for its ability to form homoternary complexes with the cucurbit[8]uril macrocycle, exhibiting an affinity (Keq) of 6.21 × 1010 M-2 for sequential binding, though having negative cooperativity. Copolymers were first prepared from different and tunable ratios of NIPAM and DMAEA, and DMAEA groups were then postsynthetically modified with this asymmetric azobenzene. Upon macrocycle addition, these polymers formed supramolecular hydrogels; relaxation dynamics increased with temperature due to temperature-dependent affinity reduction for the ternary complex. Application of UV light disrupted the supramolecular motif through azobenzene photoisomerization, prompting a gel-to-sol transition in the hydrogel. Excitingly, within several minutes at room temperature, thermal relaxation of azobenzene to its trans state afforded rapid hydrogel recovery. By revealing this supramolecular motif and employing facile means for its attachment onto pre-synthesized polymers, the approach described here may further enable stimuli-directed control of supramolecular hydrogels for a number of applications.
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Affiliation(s)
- Lei Zou
- University of Notre Dame, Department of Chemical & Biomolecular Engineering, Notre Dame, Indiana 46556, United States
| | - Christopher J Addonizio
- University of Notre Dame, Department of Chemical & Biomolecular Engineering, Notre Dame, Indiana 46556, United States
| | - Bo Su
- University of Notre Dame, Department of Chemical & Biomolecular Engineering, Notre Dame, Indiana 46556, United States
| | - Matthew J Sis
- University of Notre Dame, Department of Chemical & Biomolecular Engineering, Notre Dame, Indiana 46556, United States
| | - Adam S Braegelman
- University of Notre Dame, Department of Chemical & Biomolecular Engineering, Notre Dame, Indiana 46556, United States
| | - Dongping Liu
- University of Notre Dame, Department of Chemical & Biomolecular Engineering, Notre Dame, Indiana 46556, United States
| | - Matthew J Webber
- University of Notre Dame, Department of Chemical & Biomolecular Engineering, Notre Dame, Indiana 46556, United States
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38
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Morgan FLC, Moroni L, Baker MB. Dynamic Bioinks to Advance Bioprinting. Adv Healthc Mater 2020; 9:e1901798. [PMID: 32100963 DOI: 10.1002/adhm.201901798] [Citation(s) in RCA: 89] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2019] [Revised: 01/31/2020] [Indexed: 01/06/2023]
Abstract
The development of bioinks for bioprinting of cell-laden constructs remains a challenge for tissue engineering, despite vigorous investigation. Hydrogels to be used as bioinks must fulfill a demanding list of requirements, mainly focused around printability and cell function. Recent advances in the use of supramolecular and dynamic covalent chemistry (DCvC) provide paths forward to develop bioinks. These dynamic hydrogels enable tailorability, higher printing performance, and the creation of more life-like environments for ultimate tissue maturation. This review focuses on the exploration and benefits of dynamically cross-linked bioinks for bioprinting, highlighting recent advances, benefits, and challenges in this emerging area. By incorporating internal dynamics, many benefits can be imparted to the material, providing design elements for next generation bioinks.
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Affiliation(s)
- Francis L. C. Morgan
- Department of Complex Tissue RegenerationMERLN InstituteMaastricht University 6200 MD Maastricht The Netherlands
| | - Lorenzo Moroni
- Department of Complex Tissue RegenerationMERLN InstituteMaastricht University 6200 MD Maastricht The Netherlands
| | - Matthew B. Baker
- Department of Complex Tissue RegenerationMERLN InstituteMaastricht University 6200 MD Maastricht The Netherlands
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FitzSimons TM, Oentoro F, Shanbhag TV, Anslyn EV, Rosales AM. Preferential Control of Forward Reaction Kinetics in Hydrogels Crosslinked with Reversible Conjugate Additions. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00335] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Thomas M. FitzSimons
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712-1589, United States
| | - Felicia Oentoro
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712-1589, United States
| | - Tej V. Shanbhag
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712-1589, United States
| | - Eric V. Anslyn
- Department of Chemistry, University of Texas at Austin, Austin, Texas 78712-1224, United States
| | - Adrianne M. Rosales
- McKetta Department of Chemical Engineering, University of Texas at Austin, Austin, Texas 78712-1589, United States
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40
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Maikawa CL, Smith AAA, Zou L, Roth GA, Gale EC, Stapleton LM, Baker SW, Mann JL, Yu AC, Correa S, Grosskopf AK, Liong CS, Meis CM, Chan D, Troxell M, Maahs DM, Buckingham BA, Webber MJ, Appel EA. A co-formulation of supramolecularly stabilized insulin and pramlintide enhances mealtime glucagon suppression in diabetic pigs. Nat Biomed Eng 2020; 4:507-517. [PMID: 32393892 PMCID: PMC7274092 DOI: 10.1038/s41551-020-0555-4] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Accepted: 04/03/2020] [Indexed: 02/06/2023]
Abstract
Treatment of patients with diabetes with insulin and pramlintide (an amylin analogue) is more effective than treatment with insulin only. However, because mixtures of insulin and pramlintide are unstable and have to be injected separately, amylin analogues are only used by 1.5% of people with diabetes needing rapid-acting insulin. Here, we show that the supramolecular modification of insulin and pramlintide with cucurbit[7]uril-conjugated polyethylene glycol improves the pharmacokinetics of the dual-hormone therapy and enhances postprandial glucagon suppression in diabetic pigs. The co-formulation is stable for over 100 h at 37 °C under continuous agitation, whereas commercial formulations of insulin analogues aggregate after 10 h under similar conditions. In diabetic rats, the administration of the stabilized co-formulation increased the area-of-overlap ratio of the pharmacokinetic curves of pramlintide and insulin from 0.4 ± 0.2 to 0.7 ± 0.1 (mean ± s.d.) for the separate administration of the hormones. The co-administration of supramolecularly stabilized insulin and pramlintide better mimics the endogenous kinetics of co-secreted insulin and amylin, and holds promise as a dual-hormone replacement therapy.
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Affiliation(s)
- Caitlin L Maikawa
- Department of Bioengineering, Stanford University, Stanford, CA, USA
| | - Anton A A Smith
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA
- Department of Science and Technology, Aarhus University, Aarhus, Denmark
| | - Lei Zou
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN, USA
| | - Gillie A Roth
- Department of Bioengineering, Stanford University, Stanford, CA, USA
| | - Emily C Gale
- Department of Biochemistry, Stanford University, Stanford, CA, USA
| | | | - Sam W Baker
- Department of Comparative Medicine, Stanford University, Stanford, CA, USA
| | - Joseph L Mann
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA
| | - Anthony C Yu
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA
| | - Santiago Correa
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA
| | | | - Celine S Liong
- Department of Bioengineering, Stanford University, Stanford, CA, USA
| | - Catherine M Meis
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA
| | - Doreen Chan
- Department of Chemistry, Stanford University, Stanford, CA, USA
| | - Megan Troxell
- Department of Pathology, Stanford University, Stanford, CA, USA
| | - David M Maahs
- Department of Pediatrics (Endocrinology), Stanford University, Stanford, CA, USA
- Diabetes Research Center, Stanford University, Stanford, CA, USA
| | - Bruce A Buckingham
- Department of Pediatrics (Endocrinology), Stanford University, Stanford, CA, USA
- Diabetes Research Center, Stanford University, Stanford, CA, USA
| | - Matthew J Webber
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN, USA
| | - Eric A Appel
- Department of Bioengineering, Stanford University, Stanford, CA, USA.
- Department of Materials Science and Engineering, Stanford University, Stanford, CA, USA.
- Department of Pediatrics (Endocrinology), Stanford University, Stanford, CA, USA.
- Diabetes Research Center, Stanford University, Stanford, CA, USA.
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41
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Madl AC, Madl CM, Myung D. Injectable Cucurbit[8]uril-Based Supramolecular Gelatin Hydrogels for Cell Encapsulation. ACS Macro Lett 2020; 9:619-626. [PMID: 32523800 DOI: 10.1021/acsmacrolett.0c00184] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Recent efforts to develop hydrogel biomaterials have focused on better recapitulating the dynamic properties of the native extracellular matrix. In hydrogel biomaterials, binding thermodynamics and cross-link kinetics directly affect numerous bulk dynamic properties such as strength, stress relaxation, and material clearance. However, despite the broad range of bulk dynamic properties observed in biological tissues, present strategies to incorporate dynamic linkages in cell-encapsulating hydrogels rely on a relatively small number of dynamic covalent chemical reactions and host-guest interactions. To expand this toolkit, we report the preparation of supramolecular gelatin hydrogels with cucurbit[8]uril (CB[8])-based cross-links that form on demand via thiol-ene reactions between preassembled CB[8]·FGGC peptide ternary complexes and grafted norbornenes. Human fibroblast cells encapsulated within these optically transparent, shear thinning, injectable hydrogels remained highly viable and exhibited a well-spread morphology in culture. These CB[8]-based gelatin hydrogels are anticipated to be useful in applications ranging from bioprinting to cell and drug delivery.
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Affiliation(s)
| | | | - David Myung
- Byers Eye Institute at Stanford University School of Medicine, Palo Alto, California 94303, United States
- VA Palo Alto Health Care System, Palo Alto, California 94304, United States
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42
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Ooi HW, Kocken JMM, Morgan FLC, Malheiro A, Zoetebier B, Karperien M, Wieringa PA, Dijkstra PJ, Moroni L, Baker MB. Multivalency Enables Dynamic Supramolecular Host-Guest Hydrogel Formation. Biomacromolecules 2020; 21:2208-2217. [PMID: 32243138 PMCID: PMC7284802 DOI: 10.1021/acs.biomac.0c00148] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
![]()
Supramolecular
and dynamic biomaterials hold promise to recapitulate
the time-dependent properties and stimuli-responsiveness of the native
extracellular matrix (ECM). Host–guest chemistry is one of
the most widely studied supramolecular bonds, yet the binding characteristics
of host–guest complexes (β-CD/adamantane) in relevant
biomaterials have mostly focused on singular host–guest interactions
or nondiscrete multivalent pendent polymers. The stepwise synergistic
effect of multivalent host–guest interactions for the formation
of dynamic biomaterials remains relatively unreported. In this work,
we study how a series of multivalent adamantane (guest) cross-linkers
affect the overall binding affinity and ability to form supramolecular
networks with alginate-CD (Alg-CD). These binding constants of the
multivalent cross-linkers were determined via NMR titrations and showed
increases in binding constants occurring with multivalent constructs.
The higher multivalent cross-linkers enabled hydrogel formation; furthermore,
an increase in binding and gelation was observed with the inclusion
of a phenyl spacer to the cross-linker. A preliminary screen shows
that only cross-linking Alg-CD with an 8-arm-multivalent guest results
in robust gel formation. These cytocompatible hydrogels highlight
the importance of multivalent design for dynamically cross-linked
hydrogels. These materials hold promise for development toward cell-
and small molecule-delivery platforms and allow discrete and fine-tuning
of network properties.
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Affiliation(s)
- Huey Wen Ooi
- Department of Complex Tissue Regeneration, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, 6211 LK Maastricht, The Netherlands
| | - Jordy M M Kocken
- Department of Complex Tissue Regeneration, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, 6211 LK Maastricht, The Netherlands
| | - Francis L C Morgan
- Department of Complex Tissue Regeneration, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, 6211 LK Maastricht, The Netherlands
| | - Afonso Malheiro
- Department of Complex Tissue Regeneration, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, 6211 LK Maastricht, The Netherlands
| | - Bram Zoetebier
- Department of Developmental BioEngineering, Tech Med Centre, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Marcel Karperien
- Department of Developmental BioEngineering, Tech Med Centre, University of Twente, P.O. Box 217, 7500 AE Enschede, The Netherlands
| | - Paul A Wieringa
- Department of Complex Tissue Regeneration, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, 6211 LK Maastricht, The Netherlands
| | - Pieter J Dijkstra
- Department of Complex Tissue Regeneration, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, 6211 LK Maastricht, The Netherlands
| | - Lorenzo Moroni
- Department of Complex Tissue Regeneration, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, 6211 LK Maastricht, The Netherlands
| | - Matthew B Baker
- Department of Complex Tissue Regeneration, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, 6211 LK Maastricht, The Netherlands
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43
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Yu B, Zhan A, Liu Q, Ye H, Huang X, Shu Y, Yang Y, Liu H. A designed supramolecular cross-linking hydrogel for the direct, convenient, and efficient administration of hydrophobic drugs. Int J Pharm 2020; 578:119075. [PMID: 31991187 DOI: 10.1016/j.ijpharm.2020.119075] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 01/15/2020] [Accepted: 01/21/2020] [Indexed: 10/25/2022]
Abstract
Hydrogels formed through reversible supramolecular interactions may attain self-healing in the in situ environment. However, the low grafting degree of functional groups and steric hindrance effect of polymer backbones significantly reduced the self-healing efficacy and kinetics. To overcome these deficiencies, we designed a novel hydrogel via non-covalent host-guest interaction between β-cyclodextrin modified hyaluronic acid (HA-CD) and adamantane modified 4-arm-PEG (4-arm-PEG-Ad). The multi-armed monomer enabled to increase the number of functional groups and avoid steric hindrance effects, offering more efficient host-guest interaction. The insoluble dexamethasone could be loaded in the β-CDs' hydrophobic cavities. The designed hydrogels exhibited excellent self-healing properties. The mechanical strengths, swelling rate and release of dexamethasone could be adjusted by adding 4-arm-PEG-Ad. The novel hydrogels significantly improved the therapeutic effect of the dexamethasone in burn wound healing. Herein, these hydrogels had great potential for direct, convenient, and efficient delivery of hydrophobic drugs and improved their therapeutic effects.
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Affiliation(s)
- Bohong Yu
- Wuya College of Innovation, Shenyang Pharmaceutical University, No.103, Wenhua Road, Shenyang 110016, China
| | - Aiyan Zhan
- Wuya College of Innovation, Shenyang Pharmaceutical University, No.103, Wenhua Road, Shenyang 110016, China
| | - Qi Liu
- Wuya College of Innovation, Shenyang Pharmaceutical University, No.103, Wenhua Road, Shenyang 110016, China
| | - Hao Ye
- Wuya College of Innovation, Shenyang Pharmaceutical University, No.103, Wenhua Road, Shenyang 110016, China
| | - Xiuqing Huang
- Wuya College of Innovation, Shenyang Pharmaceutical University, No.103, Wenhua Road, Shenyang 110016, China
| | - Yue Shu
- Wuya College of Innovation, Shenyang Pharmaceutical University, No.103, Wenhua Road, Shenyang 110016, China
| | - Yang Yang
- Collage of Pharmacy, Shenyang Pharmaceutical University, No.103, Wenhua Road, Shenyang 110016, China.
| | - Hongzhuo Liu
- Wuya College of Innovation, Shenyang Pharmaceutical University, No.103, Wenhua Road, Shenyang 110016, China.
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44
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Maikawa CL, Smith AAA, Zou L, Meis CM, Mann JL, Webber MJ, Appel EA. Stable Monomeric Insulin Formulations Enabled by Supramolecular PEGylation of Insulin Analogues. ADVANCED THERAPEUTICS 2020; 3:1900094. [PMID: 32190729 PMCID: PMC7079736 DOI: 10.1002/adtp.201900094] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Indexed: 12/17/2022]
Abstract
Current "fast-acting" insulin analogues contain amino acid modifications meant to inhibit dimer formation and shift the equilibrium of association states toward the monomeric state. However, the insulin monomer is highly unstable and current formulation techniques require insulin to primarily exist as hexamers to prevent aggregation into inactive and immunogenic amyloids. Insulin formulation excipients have thus been traditionally selected to promote insulin association into the hexameric form to enhance formulation stability. This study exploits a novel excipient for the supramolecular PEGylation of insulin analogues, including aspart and lispro, to enhance the stability and maximize the prevalence of insulin monomers in formulation. Using multiple techniques, it is demonstrated that judicious choice of formulation excipients (tonicity agents and parenteral preservatives) enables insulin analogue formulations with 70-80% monomer and supramolecular PEGylation imbued stability under stressed aging for over 100 h without altering the insulin association state. Comparatively, commercial "fast-acting" formulations contain less than 1% monomer and remain stable for only 10 h under the same stressed aging conditions. This simple and effective formulation approach shows promise for next-generation ultrafast insulin formulations with a short duration of action that can reduce the risk of post-prandial hypoglycemia in the treatment of diabetes.
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Affiliation(s)
- Caitlin L Maikawa
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA
| | - Anton A A Smith
- Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA
| | - Lei Zou
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Catherine M Meis
- Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA
| | - Joseph L Mann
- Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA
| | - Matthew J Webber
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, IN 46556, USA
| | - Eric A Appel
- Department of Bioengineering, Stanford University, Stanford, CA 94305, USA
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45
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Zhang J, Hou S, Chen Y, Zhou J, Chen H, Tan Y. Dual-cross-linked dynamic hydrogels with cucurbit[8]uril and imine linkages. SOFT MATTER 2019; 15:9797-9804. [PMID: 31746924 DOI: 10.1039/c9sm01597c] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The strategy of dual cross-linking was investigated by enhancing the performance of dynamic hydrogels. To this end, phenylalanine modified ε-polylysine was synthesized and employed as the polymer backbone of hydrogels. The phenylalanine moieties and amine groups of the polymer could be cross-linked with cucurbit[8]uril (CB[8]) and the dialdehyde cross-linker, respectively. Single CB[8] linkage with fast dynamics led to an increase in the viscosity of the polymer solution, and single imine linkage with slow dynamics led to the formation of weak and brittle hydrogels. However, the two linkages were combined together to form a dual-cross-linked hydrogel and the performance of the hydrogel could be well enhanced. Compared with the single imine cross-linked hydrogel, the dual-cross-linked hydrogel demonstrated a higher mechanical strength, better extensibility and faster self-healing rate. It is anticipated that this line of research could provide a useful method to enhance the performance of dynamic hydrogels.
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Affiliation(s)
- Jin Zhang
- School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, China
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46
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Zou L, Su B, Addonizio CJ, Pramudya I, Webber MJ. Temperature-Responsive Supramolecular Hydrogels by Ternary Complex Formation with Subsequent Photo-Cross-linking to Alter Network Dynamics. Biomacromolecules 2019; 20:4512-4521. [DOI: 10.1021/acs.biomac.9b01267] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Lei Zou
- University of Notre Dame, Department of Chemical & Biomolecular Engineering, Notre Dame, Indiana 46556, United States
| | - Bo Su
- University of Notre Dame, Department of Chemical & Biomolecular Engineering, Notre Dame, Indiana 46556, United States
| | - Christopher J. Addonizio
- University of Notre Dame, Department of Chemical & Biomolecular Engineering, Notre Dame, Indiana 46556, United States
| | - Irawan Pramudya
- University of Notre Dame, Department of Chemical & Biomolecular Engineering, Notre Dame, Indiana 46556, United States
| | - Matthew J. Webber
- University of Notre Dame, Department of Chemical & Biomolecular Engineering, Notre Dame, Indiana 46556, United States
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47
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Leonhard AC, Whitmer JK. Accurate Determination of Cavitand Binding Free Energies via Unrestrained Advanced Sampling. J Chem Theory Comput 2019; 15:5761-5768. [DOI: 10.1021/acs.jctc.9b00348] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Anne C. Leonhard
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
| | - Jonathan K. Whitmer
- Department of Chemical and Biomolecular Engineering, University of Notre Dame, Notre Dame, Indiana 46556, United States
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48
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Zou L, Braegelman AS, Webber MJ. Spatially Defined Drug Targeting by in Situ Host-Guest Chemistry in a Living Animal. ACS CENTRAL SCIENCE 2019; 5:1035-1043. [PMID: 31263763 PMCID: PMC6598162 DOI: 10.1021/acscentsci.9b00195] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Indexed: 05/31/2023]
Abstract
Ensuring effective drug concentration specifically at sites of need, while limiting systemic side effects, remains a challenge in the discovery and use of new drug molecules. Carriers targeted through biological affinity (e.g., antibodies) afford a common means of drug localization, yet often deliver considerably less than 1% of an administered drug to a desired site in the body. We report on an alternative targeting paradigm using pendant guest motifs to direct molecules to sites distinguished by a hydrogel bearing a high density of a complementary cucurbituril supramolecular host. Host-guest affinity (K eq) of 1012 M-1 serves to spatially localize ∼4% of a model small molecule within hours of its administration in mice. These high-affinity interactions furthermore ensure long-lasting retention of the model compound at the site of interest, and the site can be serially targeted upon repeated dosing. This supramolecular homing axis extends the localization of small molecule payloads beyond injectable hydrogels, enabling targeting of modified biomaterials. This approach also has promising therapeutic utility, improving efficacy of a guest-modified chemotherapeutic agent in a tumor model.
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49
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Braegelman AS, Webber MJ. Integrating Stimuli-Responsive Properties in Host-Guest Supramolecular Drug Delivery Systems. Theranostics 2019; 9:3017-3040. [PMID: 31244940 PMCID: PMC6567965 DOI: 10.7150/thno.31913] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 03/27/2019] [Indexed: 12/17/2022] Open
Abstract
Host-guest motifs are likely the most recognizable manifestation of supramolecular chemistry. These complexes are characterized by the organization of small molecules on the basis of preferential association of a guest within the portal of a host. In the context of their therapeutic use, the primary application of these complexes has been as excipients which enhance the solubility or improve the stability of drug formulations, primarily in a vial. However, there may be opportunities to go significantly beyond such a role and leverage key features of the affinity, specificity, and dynamics of the interaction itself toward "smarter" therapeutic designs. One approach in this regard would seek stimuli-responsive host-guest recognition, wherein a complex forms in a manner that is sensitive to, or can be governed by, externally applied triggers, disease-specific proteins and analytes, or the presence of a competing guest. This review will highlight the general and phenomenological design considerations governing host-guest recognition and the specific types of chemistry which have been used and are available for different applications. Finally, a discussion of the molecular engineering and design approaches which enable sensitivity to a variety of different stimuli are highlighted. Ultimately, these molecular-scale approaches offer an assortment of new chemistry and material design tools toward improving precision in drug delivery.
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Affiliation(s)
| | - Matthew J. Webber
- Department of Chemical & Biomolecular Engineering, University of Notre Dame, Notre Dame, IN 46556 USA
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50
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Zou L, Webber MJ. Reversible hydrogel dynamics by physical–chemical crosslink photoswitching using a supramolecular macrocycle template. Chem Commun (Camb) 2019; 55:9931-9934. [DOI: 10.1039/c9cc04748d] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Host–guest supramolecular hydrogels are prepared from light-responsive guests within a CB[8] cavitand, and the complex catalyzes reversible guest photodimerization.
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Affiliation(s)
- Lei Zou
- Department of Chemical & Biomolecular Engineering
- University of Notre Dame
- Notre Dame
- USA
| | - Matthew J. Webber
- Department of Chemical & Biomolecular Engineering
- University of Notre Dame
- Notre Dame
- USA
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