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Zhao Y, Kang J, Cui Y, Ji S, Nian R, Yu W, Sun Y. Mechanically tunable, antibacterial and bioactive mussel adhesive protein/hyaluronic acid coacervates as bioadhesives. Int J Biol Macromol 2023; 247:125773. [PMID: 37437673 DOI: 10.1016/j.ijbiomac.2023.125773] [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: 04/16/2023] [Revised: 06/05/2023] [Accepted: 07/07/2023] [Indexed: 07/14/2023]
Abstract
In this work a bioadhesive was developed based on coacervates composed of recombinant mussel adhesive protein (MAP) and dopamine grafted hyaluronic acid (HA). Dopamine profoundly affected rheological attributes of the coacervates, leading to reduced rigidity, enhanced chain flexibility, more sol-like and fluid character and higher tolerance against structural collapse. The coacervates were rendered flowability, injectability, and adaptability, benefiting convenient delivery and making good contact with the skin to provide firm sealing for wounds of various shape and depth. It is the first time reported that MAP/HA coacervates are inherently antibacterial with 100 % growth inhibition against Gram-positive bacteria Staphylococcus aureus and Gram-negative bacteria Escherichia coli. The antibacterial capability was disclosed to be positively related to catechol content. To further enhance the coacervates bioactivity, a small bioactive peptide thymosin was added and was revealed to promote fibroblasts migration. The coacervates hold great potential as practical bioadhesives both from the perspective of rheological properties and biological activities.
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Affiliation(s)
- Yang Zhao
- CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, No. 189 Songling Road, Qingdao 266101, China; Shandong Energy Institute, No. 189 Songling Road, Qingdao 266101, China; Qingdao New Energy Shandong Laboratory, No. 189 Songling Road, Qingdao 266101, China; University of Chinese Academy of Sciences, No. 19(A) Yuquan Road, Beijing 100049, China
| | - Jia Kang
- CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, No. 189 Songling Road, Qingdao 266101, China; Shandong Energy Institute, No. 189 Songling Road, Qingdao 266101, China; Qingdao New Energy Shandong Laboratory, No. 189 Songling Road, Qingdao 266101, China
| | - Yuting Cui
- CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, No. 189 Songling Road, Qingdao 266101, China; Shandong Energy Institute, No. 189 Songling Road, Qingdao 266101, China; Qingdao New Energy Shandong Laboratory, No. 189 Songling Road, Qingdao 266101, China
| | - Shengli Ji
- ReaLi Tide Biological Technology (Weihai) Co., Ltd, South Yangguang Road&East Longhai Road, Nanhai New District, Weihai 264402, China
| | - Rui Nian
- CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, No. 189 Songling Road, Qingdao 266101, China; Shandong Energy Institute, No. 189 Songling Road, Qingdao 266101, China; Qingdao New Energy Shandong Laboratory, No. 189 Songling Road, Qingdao 266101, China
| | - Wenfa Yu
- CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, No. 189 Songling Road, Qingdao 266101, China; Shandong Energy Institute, No. 189 Songling Road, Qingdao 266101, China; Qingdao New Energy Shandong Laboratory, No. 189 Songling Road, Qingdao 266101, China.
| | - Yue Sun
- CAS Key Laboratory of Biobased Materials, Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Sciences, No. 189 Songling Road, Qingdao 266101, China; Shandong Energy Institute, No. 189 Songling Road, Qingdao 266101, China; Qingdao New Energy Shandong Laboratory, No. 189 Songling Road, Qingdao 266101, China.
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Jiao S, Zhang X, Cai H, Wu S, Ou X, Han G, Zhao J, Li Y, Guo W, Liu T, Qu W. Recent advances in biomimetic hemostatic materials. Mater Today Bio 2023; 19:100592. [PMID: 36936399 PMCID: PMC10020683 DOI: 10.1016/j.mtbio.2023.100592] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2022] [Revised: 02/21/2023] [Accepted: 02/22/2023] [Indexed: 02/26/2023] Open
Abstract
Although the past decade has witnessed unprecedented medical advances, achieving rapid and effective hemostasis remains challenging. Uncontrolled bleeding and wound infections continue to plague healthcare providers, increasing the risk of death. Various types of hemostatic materials are nowadays used during clinical practice but have many limitations, including poor biocompatibility, toxicity and biodegradability. Recently, there has been a burgeoning interest in organisms that stick to objects or produce sticky substances. Indeed, applying biological adhesion properties to hemostatic materials remains an interesting approach. This paper reviews the biological behavior, bionics, and mechanisms related to hemostasis. Furthermore, this paper covers the benefits, challenges and prospects of biomimetic hemostatic materials.
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Affiliation(s)
- Simin Jiao
- Department of Gastrointestinal Nutrition and Hernia Surgery, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, 130041, PR China
| | - Xi Zhang
- Department of Burn Surgery, The First Hospital of Jilin University, 71 Xinmin Street, Changchun, 130021, PR China
| | - Hang Cai
- Department of Pharmacy, The Second Hospital of Jilin University, Changchun, 130041, PR China
| | - Siyu Wu
- Department of Hand Surgery, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, 130041, PR China
| | - Xiaolan Ou
- Department of Hand Surgery, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, 130041, PR China
| | - Guangda Han
- Department of Gastrointestinal Nutrition and Hernia Surgery, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, 130041, PR China
| | - Jie Zhao
- Key Laboratory of Bionic Engineering, Ministry of Education, Jilin University, Changchun, 130022, PR China
| | - Yan Li
- Trauma and Reparative Medicine, Karolinska University Hospital, Stockholm, Sweden
- The Division of Orthopedics and Biotechnology, Department of Clinical Science, Intervention and Technology (CLINTEC), Karolinska Institutet, Stockholm, Sweden
| | - Wenlai Guo
- Department of Hand Surgery, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, 130041, PR China
- Corresponding author.
| | - Tianzhou Liu
- Department of Gastrointestinal Nutrition and Hernia Surgery, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, 130041, PR China
- Corresponding author.
| | - Wenrui Qu
- Department of Hand Surgery, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, 130041, PR China
- Corresponding author.
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Mantsou A, Papachristou E, Keramidas P, Lamprou P, Pavlidis A, Papi RM, Dimitriou K, Aggeli A, Choli-Papadopoulou T. A Novel Drastic Peptide Genetically Adapted to Biomimetic Scaffolds "Delivers" Osteogenic Signals to Human Mesenchymal Stem Cells. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:1236. [PMID: 37049329 PMCID: PMC10096854 DOI: 10.3390/nano13071236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Revised: 03/28/2023] [Accepted: 03/29/2023] [Indexed: 06/19/2023]
Abstract
This work describes the design, preparation, and deep investigation of "intelligent nanobiomaterials" that fulfill the safety rules and aim to serve as "signal deliverers" for osteogenesis, harboring a specific peptide that promotes and enhances osteogenesis at the end of their hydrogel fibers. The de novo synthesized protein fibers, besides their mechanical properties owed to their protein constituents from elastin, silk fibroin and mussel-foot adhesive protein-1 as well as to cell-attachment peptides from extracellular matrix glycoproteins, incorporate the Bone Morphogenetic Protein-2 (BMP2) peptide (AISMLYLDEN) that, according to our studies, serves as "signal deliverer" for osteogenesis. The osteogenetic capacity of the biomaterial has been evidenced by investigating the osteogenic marker genes ALP, RUNX2, Osteocalcin, COL1A1, BMPR1A, and BMPR2, which were increased drastically in cells cultured on scaffold-BMP2 for 21 days, even in the absence of osteogenesis medium. In addition, the induction of phosphorylation of intracellular Smad-1/5 and Erk-1/2 proteins clearly supported the osteogenetic capacity of the biomaterial.
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Affiliation(s)
- Aglaia Mantsou
- Laboratory of Biochemistry, School of Chemistry, Faculty of Sciences, Aristotle University of Thessaloniki, University Campus, 54124 Thessaloniki, Greece; (A.M.); (E.P.); (P.K.); (P.L.); (A.P.); (R.M.P.)
| | - Eleni Papachristou
- Laboratory of Biochemistry, School of Chemistry, Faculty of Sciences, Aristotle University of Thessaloniki, University Campus, 54124 Thessaloniki, Greece; (A.M.); (E.P.); (P.K.); (P.L.); (A.P.); (R.M.P.)
| | - Panagiotis Keramidas
- Laboratory of Biochemistry, School of Chemistry, Faculty of Sciences, Aristotle University of Thessaloniki, University Campus, 54124 Thessaloniki, Greece; (A.M.); (E.P.); (P.K.); (P.L.); (A.P.); (R.M.P.)
| | - Paraskevas Lamprou
- Laboratory of Biochemistry, School of Chemistry, Faculty of Sciences, Aristotle University of Thessaloniki, University Campus, 54124 Thessaloniki, Greece; (A.M.); (E.P.); (P.K.); (P.L.); (A.P.); (R.M.P.)
| | - Alexandros Pavlidis
- Laboratory of Biochemistry, School of Chemistry, Faculty of Sciences, Aristotle University of Thessaloniki, University Campus, 54124 Thessaloniki, Greece; (A.M.); (E.P.); (P.K.); (P.L.); (A.P.); (R.M.P.)
| | - Rigini M. Papi
- Laboratory of Biochemistry, School of Chemistry, Faculty of Sciences, Aristotle University of Thessaloniki, University Campus, 54124 Thessaloniki, Greece; (A.M.); (E.P.); (P.K.); (P.L.); (A.P.); (R.M.P.)
| | - Katerina Dimitriou
- Laboratory of Chemical Engineering A’, School of Chemical Engineering, Faculty of Engineering, Aristotle University of Thessaloniki, University Campus, 54124 Thessaloniki, Greece; (K.D.); (A.A.)
| | - Amalia Aggeli
- Laboratory of Chemical Engineering A’, School of Chemical Engineering, Faculty of Engineering, Aristotle University of Thessaloniki, University Campus, 54124 Thessaloniki, Greece; (K.D.); (A.A.)
| | - Theodora Choli-Papadopoulou
- Laboratory of Biochemistry, School of Chemistry, Faculty of Sciences, Aristotle University of Thessaloniki, University Campus, 54124 Thessaloniki, Greece; (A.M.); (E.P.); (P.K.); (P.L.); (A.P.); (R.M.P.)
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Yu Y, Lv B, Wu J, Chen W. Mussel-Based Biomimetic Strategies in Musculoskeletal Disorder Treatment: From Synthesis Principles to Diverse Applications. Int J Nanomedicine 2023; 18:455-472. [PMID: 36718191 PMCID: PMC9884062 DOI: 10.2147/ijn.s386635] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2022] [Accepted: 12/03/2022] [Indexed: 01/26/2023] Open
Abstract
Musculoskeletal disorders are the second leading cause of disability worldwide, posing a huge global burden to the public sanitation system. Currently, tissue engineering-based approaches act as effective strategies, which are, however, challenging in limited application scenarios. Mussel-based biomimetic materials, exhibit numerous unique properties such as intense adhesion, biocompatibility, moisture resistance, and injectability, to name only a few, and have attracted extensive research interest. In particular, featuring state-of-the-art properties, mussel-inspired biomaterials have been widely explored in innumerable musculoskeletal disorder treatments including osteochondral defects, osteosarcoma, osteoarthritis, ligament rupture, and osteoporosis. Nevertheless, a comprehensive and timely discussion of their applications in musculoskeletal disorders is insufficient. In this review, we emphasize on (1) the main categories and characteristics of mussel foot proteins and their fundamental mechanisms for the spectacular adhesion in mussels; (2) the diverse synthetic methods and modification of various polymers; and (3) the emerging applications of mussel-biomimetic materials, the future perspectives, and challenges, especially in the area of musculoskeletal disorder. We envision that this review will provide a unique and insightful perspective to improve the development of a new generation of mussel biomimetic strategies.
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Affiliation(s)
- Yajie Yu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China,Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People’s Republic of China,Hubei Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation, Huazhong University of Science and Technology, Wuhan, 430030, People’s Republic of China
| | - Bin Lv
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Juntao Wu
- Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, People’s Republic of China
| | - Wei Chen
- Department of Pharmacology, School of Basic Medicine, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430030, People’s Republic of China,Hubei Key Laboratory for Drug Target Researches and Pharmacodynamic Evaluation, Huazhong University of Science and Technology, Wuhan, 430030, People’s Republic of China,Correspondence: Wei Chen, Email
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El Abbadi A, Erni P. Rheology and tribology of chitosan/ Acacia gum complex coacervates. SOFT MATTER 2022; 18:7804-7813. [PMID: 36193837 DOI: 10.1039/d2sm00881e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Acacia gum (Gum Arabic; GA) and chitosan (CTS) form complex coacervates in acidic environments, providing a polymer-rich aqueous material with interesting bio-lubricant properties. We investigate the interplay of the tribology and rheology of these coacervates, demonstrating that they dramatically reduce the friction coefficient between lubricated soft model surfaces as compared to solutions of the individual polymers. We characterize the phase separation behavior using microscopy, electrophoretic mobility and thermogravimetric analysis. The macroscopic rheological behaviour is predominantly viscous and ranges from weakly to strongly shear thinning: viscosity levels and strength of shear thinning increase with decreasing ionic strength, but no apparent yield stress or predominant elasticity were observed even in the absence of salt. Conversely, friction coefficients measured between soft and rough surfaces increase with a rise in ionic strength and can be scaled onto a Stribeck-type master curve across varying ionic strength and pH in the mixed and hydrodynamic lubrication regimes.
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Affiliation(s)
- Amal El Abbadi
- Research Division, Materials Science Department, Firmenich SA, Rue de la Bergère 7, 1217 Meyrin/Geneva, Switzerland.
| | - Philipp Erni
- Research Division, Materials Science Department, Firmenich SA, Rue de la Bergère 7, 1217 Meyrin/Geneva, Switzerland.
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6
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Bernstein JH, Filippidi E, Herbert Waite J, Valentine MT. Effects of sea water pH on marine mussel plaque maturation. SOFT MATTER 2020; 16:9339-9346. [PMID: 32936183 DOI: 10.1039/d0sm01237h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Marine mussel plaques are an exceptional model for wet adhesives. Despite advances in understanding their protein composition and strategies for molecular bonding, the process by which these soluble proteins are rapidly processed into load-bearing structures remains poorly understood. Here, we examine the effects of seawater pH on the time evolution of the internal microstructures in plaques harvested from Mytilus californianus. Experimentally, plaques deposited by mussels on glass and acrylic surfaces were collected immediately after foot retraction without plaque separation from the surface, placed into pH-adjusted artificial seawater for varying times, and characterized using scanning electron microscopy and tensile testing. We found a pH dependent transition from a liquid-like state to a porous solid within 30 min for pH ≥ 6.7; these plaques are load-bearing. By contrast, samples maintained at pH 3.0 showed no porosity and no measurable strength. Interestingly, we found cuticle development within 15 min regardless of pH, suggesting that cuticle formation occurs prior to pore assembly. Our results suggest that sea water infusion after deposition by and disengagement of the foot is critical to the rapid formation of internal structures, which in turn plays an important role in the plaques' mechanical performance.
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Affiliation(s)
- Justin H Bernstein
- College of Creative Studies, University of California - Santa Barbara, Santa Barbara, CA 93106, USA
| | - Emmanouela Filippidi
- Materials Research Laboratory, University of California - Santa Barbara, Santa Barbara, CA 93106, USA. and Department of Mechanical Engineering, University of California - Santa Barbara, Santa Barbara, CA 93106, USA
| | - J Herbert Waite
- Department of Mechanical Engineering, University of California - Santa Barbara, Santa Barbara, CA 93106, USA and Molecular, Cellular and Developmental Biology, University of California - Santa Barbara, Santa Barbara, CA 93106, USA
| | - Megan T Valentine
- Materials Research Laboratory, University of California - Santa Barbara, Santa Barbara, CA 93106, USA. and Department of Mechanical Engineering, University of California - Santa Barbara, Santa Barbara, CA 93106, USA
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Guo Q, Chen J, Wang J, Zeng H, Yu J. Recent progress in synthesis and application of mussel-inspired adhesives. NANOSCALE 2020; 12:1307-1324. [PMID: 31907498 DOI: 10.1039/c9nr09780e] [Citation(s) in RCA: 158] [Impact Index Per Article: 39.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The rapid and robust adhesion of marine mussels to diverse solid surfaces in wet environments is mediated by the secreted mussel adhesive proteins which are abundant in a catecholic amino acid, l-3,4-dihydroxyphenylalanine (Dopa). Over the last two decades, enormous efforts have been devoted to the development of synthetic mussel-inspired adhesives with water-resistant adhesion and cohesion properties by modifying polymer systems with Dopa and its analogues. In the present review, an overview of the unique features of various mussel foot proteins is provided in combination with an up-to-date understanding of catechol chemistry, which contributes to the strong interfacial binding via balancing a variety of covalent and noncovalent interactions including oxidative cross-linking, electrostatic interaction, metal-catechol coordination, hydrogen bonding, hydrophobic interactions and π-π/cation-π interactions. The recent developments of novel Dopa-containing adhesives with on-demand mechanical properties and other functionalities are then summarized under four broad categories: viscous coacervated adhesives, soft adhesive hydrogels, smart adhesives, and stiff adhesive polyesters, where their emerging applications in engineering, biological and biomedical fields are discussed. Limitations of the developed adhesives are identified and future research perspectives in this field are proposed.
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Affiliation(s)
- Qi Guo
- School of Materials Science and Engineering, Nanyang Technological University, Singapore.
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Liu X, Xie X, Du Z, Li B, Wu L, Li W. Aqueous self-assembly of arginine and K 8SiW 11O 39: fine-tuning the formation of a coacervate intended for sprayable anticorrosive coatings. SOFT MATTER 2019; 15:9178-9186. [PMID: 31584062 DOI: 10.1039/c9sm01511f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Coacervates are commonly thought to be formed from the liquid-liquid phase separation of macromolecules, such as oppositely charged polyelectrolytes, proteins or peptides. Unlike conventional systems, we here show an entirely novel coacervate obtained from the self-assembly of arginine (Arg) and K8[α-SiW11O39] (SiW11) in water. The formation of the coacervate Arg/SiW11 is confirmed by combined techniques, including turbidity, rheology, optical microscopy, and scanning and transmission electron microscopy. Assessment of the rheological response reveals that the complex coacervate exhibits shear thinning behaviour. X-ray photoelectron spectroscopy (XPS), Fourier transform infrared (FT-IR) spectroscopy, elemental analysis and thermogravimetric analysis are used to characterize the coacervate. The thermodynamic parameters of the coacervation are monitored by isothermal titration calorimetry (ITC), which identifies that the formation of the coacervate by mixing of Arg and SiW11 is driven by a combination of entropic and enthalpic effects. The resultant coacervate shows a typical upper critical solution temperature (UCST) phenomenon, which is strongly dependent on the concentration of the species. Furthermore, we demonstrate that the coacervation could be tuned by stoichiometry and pH. A phase diagram for the complexation of Arg and SiW11 thus has been constructed using turbidity measurements. Such a phase diagram is a very useful tool for the preparation of coacervates from a specific combination of Arg and SiW11. Finally, the acid induced gelation of the coacervate has been explored to fabricate an anticorrosive coating to protect a copper plate from exposure to acid vapour.
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Affiliation(s)
- Xiaohuan Liu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Qianjin Avenue 2699, Changchun 130012, China.
| | - Xiaoming Xie
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Qianjin Avenue 2699, Changchun 130012, China.
| | - Zhanglei Du
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Qianjin Avenue 2699, Changchun 130012, China.
| | - Bao Li
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Qianjin Avenue 2699, Changchun 130012, China.
| | - Lixin Wu
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Qianjin Avenue 2699, Changchun 130012, China.
| | - Wen Li
- State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, Qianjin Avenue 2699, Changchun 130012, China.
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Horn JM, Kapelner RA, Obermeyer AC. Macro- and Microphase Separated Protein-Polyelectrolyte Complexes: Design Parameters and Current Progress. Polymers (Basel) 2019; 11:E578. [PMID: 30960562 PMCID: PMC6523202 DOI: 10.3390/polym11040578] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 03/18/2019] [Accepted: 03/23/2019] [Indexed: 01/02/2023] Open
Abstract
Protein-containing polyelectrolyte complexes (PECs) are a diverse class of materials, composed of two or more oppositely charged polyelectrolytes that condense and phase separate near overall charge neutrality. Such phase-separation can take on a variety of morphologies from macrophase separated liquid condensates, to solid precipitates, to monodispersed spherical micelles. In this review, we present an overview of recent advances in protein-containing PECs, with an overall goal of defining relevant design parameters for macro- and microphase separated PECs. For both classes of PECs, the influence of protein characteristics, such as surface charge and patchiness, co-polyelectrolyte characteristics, such as charge density and structure, and overall solution characteristics, such as salt concentration and pH, are considered. After overall design features are established, potential applications in food processing, biosensing, drug delivery, and protein purification are discussed and recent characterization techniques for protein-containing PECs are highlighted.
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Affiliation(s)
- Justin M Horn
- Department of Chemical Engineering, Columbia University, New York, NY 10027, USA.
| | - Rachel A Kapelner
- Department of Chemical Engineering, Columbia University, New York, NY 10027, USA.
| | - Allie C Obermeyer
- Department of Chemical Engineering, Columbia University, New York, NY 10027, USA.
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Muiznieks LD, Sharpe S, Pomès R, Keeley FW. Role of Liquid–Liquid Phase Separation in Assembly of Elastin and Other Extracellular Matrix Proteins. J Mol Biol 2018; 430:4741-4753. [DOI: 10.1016/j.jmb.2018.06.010] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Revised: 05/29/2018] [Accepted: 06/01/2018] [Indexed: 10/14/2022]
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11
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DeMartini DG, Errico JM, Sjoestroem S, Fenster A, Waite JH. A cohort of new adhesive proteins identified from transcriptomic analysis of mussel foot glands. J R Soc Interface 2018; 14:rsif.2017.0151. [PMID: 28592662 DOI: 10.1098/rsif.2017.0151] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Accepted: 05/16/2017] [Indexed: 11/12/2022] Open
Abstract
The adaptive attachment of marine mussels to a wide range of substrates in a high-energy, saline environment has been explored for decades and is a significant driver of bioinspired wet adhesion research. Mussel attachment relies on a fibrous holdfast known as the byssus, which is made by a specialized appendage called the foot. Multiple adhesive and structural proteins are rapidly synthesized, secreted and moulded by the foot into holdfast threads. About 10 well-characterized proteins, namely the mussel foot proteins (Mfps), the preCols and the thread matrix proteins, are reported as representing the bulk of these structures. To explore how robust this proposition is, we sequenced the transcriptome of the glandular tissues that produce and secrete the various holdfast components using next-generation sequencing methods. Surprisingly, we found around 15 highly expressed genes that have not previously been characterized, but bear key similarities to the previously defined mussel foot proteins, suggesting additional contribution to byssal function. We verified the validity of these transcripts by polymerase chain reaction, cloning and Sanger sequencing as well as confirming their presence as proteins in the byssus. These newly identified proteins greatly expand the palette of mussel holdfast biochemistry and provide new targets for investigation into bioinspired wet adhesion.
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Affiliation(s)
- Daniel G DeMartini
- Marine Science Institute, University of California-Santa Barbara, Santa Barbara, CA 93106-6150, USA
| | - John M Errico
- Marine Science Institute, University of California-Santa Barbara, Santa Barbara, CA 93106-6150, USA
| | - Sebastian Sjoestroem
- Marine Science Institute, University of California-Santa Barbara, Santa Barbara, CA 93106-6150, USA
| | - April Fenster
- Marine Science Institute, University of California-Santa Barbara, Santa Barbara, CA 93106-6150, USA
| | - J Herbert Waite
- Marine Science Institute, University of California-Santa Barbara, Santa Barbara, CA 93106-6150, USA
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Hwang MP, Ding X, Gao J, Acharya AP, Little SR, Wang Y. A biocompatible betaine-functionalized polycation for coacervation. SOFT MATTER 2018; 14:387-395. [PMID: 29147712 PMCID: PMC5771809 DOI: 10.1039/c7sm01763d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
The aqueous nature of complex coacervates provides a biologically-relevant context for various therapeutic applications. In this sense, biological applications demand a corresponding level of biocompatibility from the polyelectrolytes that participate in complex coacervation. Continued development with naturally-occurring polyelectrolytes such as heparin and chitosan underscore such aims. Herein, we design a synthetic polycation, in which betaine is conjugated to a biodegradable polyester backbone. Betaine is a naturally-occurring methylated amino acid that is ubiquitously present in human plasma. Inspired by its vast range of benefits - including but not limited to anti-inflammation, anti-cancer, anti-bacterial, anti-oxidant, protein stabilization, and cardiovascular health - we aim to impart additional functionality to a polycation for eventual use in a complex coacervate with heparin. We report on its in vitro and in vivo biocompatibility, in vitro and in vivo effect on angiogenesis, in vitro effect on microbial growth, and ability to form complex coacervates with heparin.
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Affiliation(s)
- Mintai P Hwang
- Meinig School of Biomedical Engineering, Cornell University, Ithaca, NY 14853, USA.
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13
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Biller JR, Barnes R, Han S. Perspective of Overhauser dynamic nuclear polarization for the study of soft materials. Curr Opin Colloid Interface Sci 2018. [DOI: 10.1016/j.cocis.2018.02.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Kaminker I, Wei W, Schrader AM, Talmon Y, Valentine MT, Israelachvili JN, Waite JH, Han S. Simple peptide coacervates adapted for rapid pressure-sensitive wet adhesion. SOFT MATTER 2017; 13:9122-9131. [PMID: 29192930 PMCID: PMC5744669 DOI: 10.1039/c7sm01915g] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
We report here that a dense liquid formed by spontaneous condensation, also known as simple coacervation, of a single mussel foot protein-3S-mimicking peptide exhibits properties critical for underwater adhesion. A structurally homogeneous coacervate is deposited on underwater surfaces as micrometer-thick layers, and, after compression, displays orders of magnitude higher underwater adhesion at 2 N m-1 than that reported from thin films of the most adhesive mussel-foot-derived peptides or their synthetic mimics. The increase in adhesion efficiency does not require nor rely on post-deposition curing or chemical processing, but rather represents an intrinsic physical property of the single-component coacervate. Its wet adhesive and rheological properties correlate with significant dehydration, tight peptide packing and restriction in peptide mobility. We suggest that such dense coacervate liquids represent an essential adaptation for the initial priming stages of mussel adhesive deposition, and provide a hitherto untapped design principle for synthetic underwater adhesives.
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Affiliation(s)
- Ilia Kaminker
- Department of Chemistry and Biochemistry, University of California Santa Barbara, CA 93106, USA.
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15
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Kim HJ, Yang B, Park TY, Lim S, Cha HJ. Complex coacervates based on recombinant mussel adhesive proteins: their characterization and applications. SOFT MATTER 2017; 13:7704-7716. [PMID: 29034934 DOI: 10.1039/c7sm01735a] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Complex coacervates are a dense liquid phase of oppositely charged polyions formed by the associative separation of a mixture of polyions. Coacervates have been widely employed in many fields including the pharmaceutical, cosmetic, and food industries due to their intriguing interfacial and bulk material properties. More recently, attempts to develop an effective underwater adhesive have been made using complex coacervates that are based on recombinant mussel adhesive proteins (MAPs) due to the water immiscibility of complex coacervates and the adhesiveness of MAPs. MAP-based complex coacervates contribute to our understanding of the physical nature of complex coacervates and they provide a promising alternative to conventional invasive surgical repairs. Here, this review provides an overview of recombinant MAP-based complex coacervations, with an emphasis on their characterization and the uses of such materials for applications in the fields of biomedicine and tissue engineering.
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Affiliation(s)
- Hyo Jeong Kim
- Department of Chemical Engineering, Pohang University of Science and Technology, 37673, Pohang, Korea.
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16
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Kim S, Yoo HY, Huang J, Lee Y, Park S, Park Y, Jin S, Jung YM, Zeng H, Hwang DS, Jho Y. Salt Triggers the Simple Coacervation of an Underwater Adhesive When Cations Meet Aromatic π Electrons in Seawater. ACS NANO 2017; 11:6764-6772. [PMID: 28614666 DOI: 10.1021/acsnano.7b01370] [Citation(s) in RCA: 106] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Adhesive systems in many marine organisms are postulated to form complex coacervates (liquid-liquid phase separation) through a process involving oppositely charged polyelectrolytes. Despite this ubiquitous speculation, most well-characterized mussel adhesive proteins are cationic and polyphenolic, and the pursuit of the negatively charged proteins required for bulk complex coacervation formation internally remains elusive. In this study, we provide a clue for unraveling this paradox by showing the bulky fluid/fluid separation of a single cationic recombinant mussel foot protein, rmfp-1, with no additional anionic proteins or artificial molecules, that is triggered by a strong cation-π interaction in natural seawater conditions. With the similar condition of salt concentration at seawater level (>0.7 M), the electrostatic repulsion between positively charged residues of mfp-1 is screened significantly, whereas the strong cation-π interaction remains unaffected, which leads to the macroscopic phase separation (i.e., bulky coacervate formation). The single polyelectrolyte coacervate shows interesting mechanical properties including low friction, which facilitates the secretion process of the mussel. Our findings reveal that the cation-π interaction modulated by salt is a key mechanism in the mussel adhesion process, providing new insights into the basic understanding of wet adhesion, self-assembly processes, and biological phenomena that are mediated by strong short-range attractive forces in water.
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Affiliation(s)
| | | | - Jun Huang
- Department of Chemical and Materials Engineering, University of Alberta , Edmonton, AB T6G 2 V4, Canada
| | - Yongjin Lee
- Asia Pacific Center for Theoretical Physics , Pohang 37673, Republic of Korea
| | | | - Yeonju Park
- Department of Chemistry, Kangwon National University , Chunchon 200-701, Republic of Korea
| | - Sila Jin
- Department of Chemistry, Kangwon National University , Chunchon 200-701, Republic of Korea
| | - Young Mee Jung
- Department of Chemistry, Kangwon National University , Chunchon 200-701, Republic of Korea
| | - Hongbo Zeng
- Department of Chemical and Materials Engineering, University of Alberta , Edmonton, AB T6G 2 V4, Canada
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17
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Costagliola G, Bosia F, Pugno NM. Hierarchical Spring-Block Model for Multiscale Friction Problems. ACS Biomater Sci Eng 2017; 3:2845-2852. [PMID: 33418707 DOI: 10.1021/acsbiomaterials.6b00709] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A primary issue in biomaterials science is to design materials with ad hoc properties, depending on the specific application. Among these properties, friction is recognized as a fundamental aspect characterizing materials for many practical purposes. Recently, new and unexpected frictional properties have been obtained by exploiting hierarchical multiscale structures, inspired by those observed in many biological systems. In order to understand the emergent frictional behavior of these materials at the macroscale, it is fundamental to investigate their hierarchical structure, spanning across different length scales. In this article, we introduce a statistical multiscale approach, based on a one-dimensional formulation of the spring-block model, in which friction is modeled at each hierarchical scale through the classical Amontons-Coulomb force with statistical dispersion on the friction coefficients of the microscopic components. By means of numerical simulations, we deduce the global statistical distributions of the elementary structure at micrometric scale and use them as input distributions for the simulations at the next scale levels. We thus study the influence of microscopic artificial patterning on macroscopic friction coefficients. We show that it is possible to tune the friction properties of a hierarchical surface and provide some insight on the mechanisms involved at different length scales.
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Affiliation(s)
- Gianluca Costagliola
- Department of Physics and Nanostructured Interfaces and Surfaces inter-departmental Center, University of Torino, Via Pietro Giuria 1, 10125, Torino, Italy
| | - Federico Bosia
- Department of Physics and Nanostructured Interfaces and Surfaces inter-departmental Center, University of Torino, Via Pietro Giuria 1, 10125, Torino, Italy
| | - Nicola M Pugno
- Laboratory of Bio-Inspired & Graphene Nanomechanics, Department of Civil, Environmental and Mechanical Engineering, University of Trento, Via Mesiano, 77, 38123 Trento, Italy.,School of Engineering and Materials Science, Queen Mary University of London, Mile End Road, London E1 4NS, U.K.,Ket-Lab Italian Space Agency, Via del Politecnico snc, 00133 Rome, Italy
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18
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Patil NJ, Rishikesan S, Nikogeorgos N, Guzzi R, Lee S, Zappone B. Complexation and synergistic boundary lubrication of porcine gastric mucin and branched poly(ethyleneimine) in neutral aqueous solution. SOFT MATTER 2017; 13:590-599. [PMID: 27976775 DOI: 10.1039/c6sm01801g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Lubrication of soft polydimethylsiloxane (PDMS) elastomer interfaces was studied in aqueous mixtures of porcine gastric mucin (PGM) and branched polyethyleneimine (b-PEI) at neutral pH and various ionic strengths (0.1-1.0 M). While neither PGM nor b-PEI improved lubrication compared to polymer-free buffer solution, their mixtures produced a synergistic lubricating effect by reducing friction coefficients by nearly two orders of magnitude, especially at slow sliding speed in the boundary lubrication regime. An array of spectroscopic studies revealed that small cationic b-PEI molecules were able to strongly bind and penetrate into large anionic PGM molecules, producing an overall contraction of the randomly coiled PGM conformation. The interaction also affected the structure of the folded PGM protein terminals, decreased the surface potential and increased light absorbance in PGM:b-PEI mixtures. Adding an electrolyte (NaCl) weakened the aggregation between PGM and b-PEI, and degraded the lubrication synergy, indicating that electrostatic interactions drive PGM:b-PEI complexation.
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Affiliation(s)
- Navinkumar J Patil
- Dipartimento di Fisica, Università della Calabria, Cubo 31/C, Rende, CS 87036, Italy
| | | | - Nikolaos Nikogeorgos
- Department of Mechanical Engineering, Technical University of Denmark, DK-2800, Kgs. Lyngby, Denmark.
| | - Rita Guzzi
- Dipartimento di Fisica, Università della Calabria, Cubo 31/C, Rende, CS 87036, Italy
| | - Seunghwan Lee
- Department of Mechanical Engineering, Technical University of Denmark, DK-2800, Kgs. Lyngby, Denmark.
| | - Bruno Zappone
- Consiglio Nazionale delle Ricerche - Istituto di Nanotecnologia (CNR-Nanotec), SS Cosenza - LICRYL, c/o Dipartimento di Fisica, Università della Calabria, Cubo 33/B, Rende, CS 87036, Italy.
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19
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Shin M, Park SG, Oh BC, Kim K, Jo S, Lee MS, Oh SS, Hong SH, Shin EC, Kim KS, Kang SW, Lee H. Complete prevention of blood loss with self-sealing haemostatic needles. NATURE MATERIALS 2017; 16:147-152. [PMID: 27698353 DOI: 10.1038/nmat4758] [Citation(s) in RCA: 178] [Impact Index Per Article: 25.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2015] [Accepted: 08/23/2016] [Indexed: 06/06/2023]
Abstract
Bleeding is largely unavoidable following syringe needle puncture of biological tissues and, while inconvenient, this typically causes little or no harm in healthy individuals. However, there are certain circumstances where syringe injections can have more significant side effects, such as uncontrolled bleeding in those with haemophilia, coagulopathy, or the transmission of infectious diseases through contaminated blood. Herein, we present a haemostatic hypodermic needle able to prevent bleeding following tissue puncture. The surface of the needle is coated with partially crosslinked catechol-functionalized chitosan that undergoes a solid-to-gel phase transition in situ to seal punctured tissues. Testing the capabilities of these haemostatic needles, we report complete prevention of blood loss following intravenous and intramuscular injections in animal models, and 100% survival in haemophiliac mice following syringe puncture of the jugular vein. Such self-sealing haemostatic needles and adhesive coatings may therefore help to prevent complications associated with bleeding in more clinical settings.
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Affiliation(s)
- Mikyung Shin
- The Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Sung-Gurl Park
- Predictive Model Research Center, Korea Institute of Toxicology (KIT), Daejeon 34114, Republic of Korea
| | - Byung-Chang Oh
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Keumyeon Kim
- R&D Center, InnoTherapy Inc., Seoul 07327, Republic of Korea
| | - Seongyeon Jo
- R&D Center, InnoTherapy Inc., Seoul 07327, Republic of Korea
| | - Moon Sue Lee
- R&D Center, InnoTherapy Inc., Seoul 07327, Republic of Korea
| | - Seok Song Oh
- Meta-Biomed Co., Cheongju, Chungbuk 28161, Republic of Korea
| | - Seon-Hui Hong
- Laboratory of Immunology and Infectious Diseases, Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Eui-Cheol Shin
- Laboratory of Immunology and Infectious Diseases, Graduate School of Medical Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
| | - Ki-Suk Kim
- Predictive Model Research Center, Korea Institute of Toxicology (KIT), Daejeon 34114, Republic of Korea
- Department of Human and Environmental Toxicology, University of Science and Technology, Daejeon 34113, Republic of Korea
| | - Sun-Woong Kang
- Predictive Model Research Center, Korea Institute of Toxicology (KIT), Daejeon 34114, Republic of Korea
- Department of Human and Environmental Toxicology, University of Science and Technology, Daejeon 34113, Republic of Korea
| | - Haeshin Lee
- The Graduate School of Nanoscience and Technology, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Republic of Korea
- R&D Center, InnoTherapy Inc., Seoul 07327, Republic of Korea
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20
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Jho Y, Yoo HY, Lin Y, Han S, Hwang DS. Molecular and structural basis of low interfacial energy of complex coacervates in water. Adv Colloid Interface Sci 2017; 239:61-73. [PMID: 27499328 DOI: 10.1016/j.cis.2016.07.003] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2016] [Revised: 07/12/2016] [Accepted: 07/14/2016] [Indexed: 12/26/2022]
Abstract
Complex coacervate refers to a phase-separated fluid, typically of two oppositely charged polyelectrolytes in solution, representing a complex fluid system that has been shown to be of essential interest to biological systems, as well as for soft materials processing owing to the expectation of superior underwater coating or adhesion properties. The significance and interest in complex coacervate fluids critically rely on its low interfacial tension with respect to water that, in turn, facilitates the wetting of macromolecular or material surfaces under aqueous conditions, provided there is attractive interaction between the polyelectrolyte constituents and the surface. However, the molecular and structural bases of these properties remain unclear. Recent studies propose that the formation of water-filled and bifluidic sponge-like nanostructured network, driven by the tuning of electrostatic interactions between the polyelectrolyte constituents or their complexes may be a common feature of complex coacervate fluids that display low fluid viscosity and low interfacial tension, but more studies are needed to verify the generality of these observations. In this review, we summarize representative studies of interfacial tension and ultrastructures of complex coacervate fluids. We highlight that a consensus property of the complex coacervate fluid is the observation of high or even bulk-like water dynamics within the dense complex coacervate phase that is consistent with a low cohesive energy fluid. Our own studies on this subject are enabled by the application of magnetic resonance relaxometry methods relying on spin labels tethered to polyelectrolyte constituents or added as spin labeled probe molecules that partition into the dense versus the equilibrium coacervate phase, permitting the extraction of information on local polymer dynamics, polymer packing and local water dynamics. We conclude with a snapshot of our current perspective on the molecular and structural bases of the low interfacial tension of complex coacervate fluids.
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Affiliation(s)
- YongSeok Jho
- Center for Soft and Living Matter, Institute for Basic Science (IBS), Ulsan 44919, Republic of Korea
| | - Hee Young Yoo
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea
| | - Yanxian Lin
- Biomolecular Science and Engineering, University of California Santa Barbara, Santa Barbara, CA 93106, USA
| | - Songi Han
- Department of Chemistry and Biochemistry, University of California Santa Barbara, Santa Barbara, CA 93106, USA; Department of Chemical Engineering, University of California Santa Barbara, Santa Barbara, CA 93106, USA.
| | - Dong Soo Hwang
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea; School of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang 37673, Republic of Korea.
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21
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Kord Forooshani P, Lee BP. Recent approaches in designing bioadhesive materials inspired by mussel adhesive protein. JOURNAL OF POLYMER SCIENCE. PART A, POLYMER CHEMISTRY 2017; 55:9-33. [PMID: 27917020 PMCID: PMC5132118 DOI: 10.1002/pola.28368] [Citation(s) in RCA: 349] [Impact Index Per Article: 49.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Accepted: 09/03/2016] [Indexed: 12/11/2022]
Abstract
Marine mussels secret protein-based adhesives, which enable them to anchor to various surfaces in a saline, intertidal zone. Mussel foot proteins (Mfps) contain a large abundance of a unique, catecholic amino acid, Dopa, in their protein sequences. Catechol offers robust and durable adhesion to various substrate surfaces and contributes to the curing of the adhesive plaques. In this article, we review the unique features and the key functionalities of Mfps, catechol chemistry, and strategies for preparing catechol-functionalized polymers. Specifically, we reviewed recent findings on the contributions of various features of Mfps on interfacial binding, which include coacervate formation, surface drying properties, control of the oxidation state of catechol, among other features. We also summarized recent developments in designing advanced biomimetic materials including coacervate-forming adhesives, mechanically improved nano- and micro-composite adhesive hydrogels, as well as smart and self-healing materials. Finally, we review the applications of catechol-functionalized materials for the use as biomedical adhesives, therapeutic applications, and antifouling coatings. © 2016 The Authors. Journal of Polymer Science Part A: Polymer Chemistry Published by Wiley Periodicals, Inc. J. Polym. Sci., Part A: Polym. Chem. 2017, 55, 9-33.
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Affiliation(s)
- Pegah Kord Forooshani
- Department of Biomedical EngineeringMichigan Technological UniversityHoughtonMichigan49931
| | - Bruce P. Lee
- Department of Biomedical EngineeringMichigan Technological UniversityHoughtonMichigan49931
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22
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Vieregg JR, Tang TYD. Polynucleotides in cellular mimics: Coacervates and lipid vesicles. Curr Opin Colloid Interface Sci 2016. [DOI: 10.1016/j.cocis.2016.09.004] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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23
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Muiznieks LD, Keeley FW. Biomechanical Design of Elastic Protein Biomaterials: A Balance of Protein Structure and Conformational Disorder. ACS Biomater Sci Eng 2016; 3:661-679. [DOI: 10.1021/acsbiomaterials.6b00469] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Lisa D. Muiznieks
- Molecular
Structure and Function Program, Research Institute, The Hospital for Sick Children, 686 Bay Street, Toronto, Ontario, Canada M5G 0A4
| | - Fred W. Keeley
- Molecular
Structure and Function Program, Research Institute, The Hospital for Sick Children, 686 Bay Street, Toronto, Ontario, Canada M5G 0A4
- Department
of Biochemistry and Department of Laboratory Medicine and Pathobiology, 1 King’s College Circle, University of Toronto, Toronto, Ontario, Canada M5S 1A8
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24
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Huang KY, Yoo HY, Jho Y, Han S, Hwang DS. Bicontinuous Fluid Structure with Low Cohesive Energy: Molecular Basis for Exceptionally Low Interfacial Tension of Complex Coacervate Fluids. ACS NANO 2016; 10:5051-5062. [PMID: 27152954 DOI: 10.1021/acsnano.5b07787] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
An exceptionally low interfacial tension of a dense fluid of concentrated polyelectrolyte complexes, phase-separated from a biphasic fluid known as complex coacervates, represents a unique and highly sought-after materials property that inspires novel applications from superior coating to wet adhesion. Despite extensive studies and broad interest, the molecular and structural bases for the unique properties of complex coacervates are unclear. Here, a microphase-separated complex coacervate fluid generated by mixing a recombinant mussel foot protein-1 (mfp-1) as the polycation and hyaluronic acid (HA) as the polyanion at stoichiometric ratios was macroscopically phase-separated into a dense complex coacervate and a dilute supernatant phase to enable separate characterization of the two fluid phases. Surprisingly, despite up to 4 orders of magnitude differing density of the polyelectrolytes, the diffusivity of water in these two phases was found to be indistinguishable. The presence of unbound, bulk-like, water in the dense fluid can be reconciled with a water population that is only weakly perturbed by the polyelectrolyte interface and network. This hypothesis was experimentally validated by cryo-TEM of the macroscopically phase-separated dense complex coacervate phase that was found to be a bicontinuous and biphasic nanostructured network, in which one of the phases was confirmed by staining techniques to be water and the other polyelectrolyte complexes. We conclude that a weak cohesive energy between water-water and water-polyelectrolytes manifests itself in a bicontinuous network, and is responsible for the exceptionally low interfacial energy of this complex fluid phase with respect to virtually any surface within an aqueous medium.
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Affiliation(s)
- Kuo-Ying Huang
- Department of Chemistry and Biochemistry, University of California Santa Barbara , Santa Barbara, California 93106, United States
| | - Hee Young Yoo
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology (POSTECH) , Pohang 37673, Republic of Korea
| | - YongSeok Jho
- Center for Soft and Living Matter, Institute for Basic Science (IBS) , Ulsan 44919, Republic of Korea
- Asia-Pacific Center for Theoretical Physics , Pohang 37673, Republic of Korea
| | - Songi Han
- Department of Chemistry and Biochemistry, University of California Santa Barbara , Santa Barbara, California 93106, United States
| | - Dong Soo Hwang
- Division of Integrative Biosciences and Biotechnology, Pohang University of Science and Technology (POSTECH) , Pohang 37673, Republic of Korea
- School of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH) , Pohang 37673, Republic of Korea
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