1
|
Fujii T, Watanabe S, Uga M, Matsui Y, Sakaki K, Matsukawa N, Machida T, Kurihara M, Tashiro Y, Okamoto E, Yauchi T, Suzuki S, Koyama S. Analysis of lens cloudiness during endoscopic submucosal dissection procedures: Effects of a novel lens cleaner. DEN OPEN 2025; 5:e416. [PMID: 39077550 PMCID: PMC11284122 DOI: 10.1002/deo2.416] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/03/2024] [Revised: 07/08/2024] [Accepted: 07/14/2024] [Indexed: 07/31/2024]
Abstract
Objectives We aimed to identify independent factors for intraoperative endoscopic lens cloudiness during gastric and colorectal endoscopic submucosal dissections, investigate the effectiveness of Cleastay, an endoscope anti-fog solution, and examine factors associated with severe submucosal fat deposition. Methods A total of 220 patients who underwent gastric or colorectal endoscopic submucosal dissections in two institutions between January 2022 and October 2023 were included. Significant factors related to cloudiness were determined using univariate and multivariate analyses. Patient background and tumor characteristics related to severe submucosal fat deposition were investigated, and the degree of intraoperative endoscopic lens cloudiness and outcomes were compared between the Cleash and Cleastay groups. Results In the multivariate analysis, factors increasing lens cloudiness included long procedure time (odds ratio [OR], 17.51; 95% confidence interval [CI], 1.52-202.08), stomach (vs. colon; OR, 5.08; 95% CI, 1.99-12.96), and severe submucosal fat deposition (OR, 12.19; 95% CI, 5.02-29.60). Conversely, the use of Cleastay (vs. Cleash; OR, 0.066; 95% CI, 0.021-0.21) was identified as a factor reducing cloudiness. Location analysis revealed that severe submucosal fat deposition was more common in the upper stomach and right colon. Conclusions It was suggested that Cleastay is more useful for endoscopic submucosal dissection of the upper stomach and right colon, where severe submucosal fat deposition is expected.
Collapse
Affiliation(s)
- Takashi Fujii
- Department of GastroenterologyTokyo Metropolitan Hiroo HospitalTokyoJapan
| | - Sho Watanabe
- Department of GastroenterologySoka Municipal HospitalSaitamaJapan
| | - Misugi Uga
- Department of GastroenterologySoka Municipal HospitalSaitamaJapan
| | - Yuuki Matsui
- Department of GastroenterologyTokyo Metropolitan Hiroo HospitalTokyoJapan
| | - Kazuomi Sakaki
- Department of GastroenterologyTokyo Metropolitan Hiroo HospitalTokyoJapan
| | - Naoki Matsukawa
- Department of GastroenterologySoka Municipal HospitalSaitamaJapan
| | - Tomoyo Machida
- Department of GastroenterologySoka Municipal HospitalSaitamaJapan
| | | | - Yoshihiro Tashiro
- Department of GastroenterologyTokyo Metropolitan Hiroo HospitalTokyoJapan
| | - Eiko Okamoto
- Department of GastroenterologyTokyo Metropolitan Hiroo HospitalTokyoJapan
| | - Tsunehito Yauchi
- Department of GastroenterologySoka Municipal HospitalSaitamaJapan
| | - Shinji Suzuki
- Department of GastroenterologyTokyo Metropolitan Hiroo HospitalTokyoJapan
| | - Shigeru Koyama
- Department of EndoscopyTokyo Metropolitan Hiroo HospitalTokyoJapan
| |
Collapse
|
2
|
Cui H, Liu Y, Yu Y, Lv D, Ma S, Gao M, Yang Y, Yuan C, Liu Y, Wang C. Panax notoginseng saponins and acetylsalicylic acid co-delivered liposomes for targeted treatment of ischemic stroke. Int J Pharm 2024:124782. [PMID: 39349224 DOI: 10.1016/j.ijpharm.2024.124782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2024] [Revised: 08/27/2024] [Accepted: 09/28/2024] [Indexed: 10/02/2024]
Abstract
In this study, we aimed to develop brain-targeted co-delivery liposomes for the concurrent delivery of Panax notoginseng saponins (PNS) and acetylsalicylic acid (ASA) for the treatment of ischemic stroke. Within this system, PNS served as a cholesterol substitute, integrating into the phospholipid bilayer of the liposomes, while ASA was encapsulated internally. A poly-2-methacryloyloxyethyl phosphorylcholine (PMPC) polymer was synthesized and incorporated into the liposome surface. This formulation demonstrated an enhanced PNS-loading capacity and facilitated the synchronized delivery of key saponin components. Following PMPC modification, the liposomes exhibited prolonged circulation and improved transport across the blood-brain barrier (BBB) through acetylcholine receptor-mediated pathways. Furthermore, the co-delivery system exhibited enhanced therapeutic efficacy in a rat model of cerebral ischemia-reperfusion injury via the phosphoinositide 3-kinase/protein kinase C pathway. Additional analyses revealed significant effects on the metabolism of neurotransmitters, amino acids, folate, and various other pathways, indicating a multi-faceted therapeutic effect. Overall, this study presents an innovative research strategy for the comprehensive delivery of diverse components in traditional Chinese medicine formulations, highlighting the potential for synergistic treatments that combine traditional Chinese medicine with chemical agents.
Collapse
Affiliation(s)
- Hao Cui
- School of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China; Key Laboratory of Sustainable Utilization of Panax Notoginseng Resources of Yunnan Province, Kunming 650500, China
| | - Yanchi Liu
- School of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China; Key Laboratory of Sustainable Utilization of Panax Notoginseng Resources of Yunnan Province, Kunming 650500, China
| | - Ying Yu
- School of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China; Key Laboratory of Sustainable Utilization of Panax Notoginseng Resources of Yunnan Province, Kunming 650500, China
| | - Dong Lv
- School of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China; Key Laboratory of Sustainable Utilization of Panax Notoginseng Resources of Yunnan Province, Kunming 650500, China
| | - Sha Ma
- School of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China; Key Laboratory of Sustainable Utilization of Panax Notoginseng Resources of Yunnan Province, Kunming 650500, China
| | - Mingju Gao
- Wenshan University, Wenshan 663099, China
| | - Ye Yang
- School of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China; Key Laboratory of Sustainable Utilization of Panax Notoginseng Resources of Yunnan Province, Kunming 650500, China
| | - Cheng Yuan
- School of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
| | - Yuan Liu
- School of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China; Key Laboratory of Sustainable Utilization of Panax Notoginseng Resources of Yunnan Province, Kunming 650500, China.
| | - Chengxiao Wang
- School of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China; Key Laboratory of Sustainable Utilization of Panax Notoginseng Resources of Yunnan Province, Kunming 650500, China.
| |
Collapse
|
3
|
Uchida K, Masuda T, Hara S, Matsuo Y, Liu Y, Aoki H, Asano Y, Miyata K, Fukuma T, Ono T, Isoyama T, Takai M. Stability Enhancement by Hydrophobic Anchoring and a Cross-Linked Structure of a Phospholipid Copolymer Film for Medical Devices. ACS APPLIED MATERIALS & INTERFACES 2024; 16:39104-39116. [PMID: 39036941 DOI: 10.1021/acsami.4c07752] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/23/2024]
Abstract
Surface modification using zwitterionic 2-methacryloyloxyethylphosphorylcholine (MPC) polymers is one of the most reasonable ways to prepare medical devices that can suppress undesired biological reactions such as blood coagulation. Usable MPC polymers are hydrophilic and water soluble, and their surface modification strategy involves exploiting the copolymer structures by adding physical or chemical bonding moieties. In this study, we developed copolymers composed of MPC, hydrophobic anchoring moiety, and chemical cross-linking unit to clarify the role of hydrophobic interactions in achieving biocompatible and long-term stable coatings. The four kinds of MPC copolymers with cross-linking units, such as 3-methacryloxypropyl trimethoxysilane (MPTMSi), and four different hydrophobic anchoring moieties, such as 3-(methacryloyloxy)propyltris(trimethylsiloxy)silane (MPTSSi) named as PMMMSi, n-butyl methacrylate (BMA) as PMBSi, 2-ethylhexyl methacrylate (EHMA) as PMESi, and lauryl methacrylate as PMLSi, were synthesized and coated on polydimethylsiloxane, polypropylene (PP), and polymethyl pentene. These copolymers were uniformly coated on the substrate materials PP and poly(methyl pentene) (PMP), to achieve hydrophilic and electrically neutral coatings. The results of the antibiofouling test showed that PMBSi repelled the adsorption of fluorescence-labeled bovine serum albumin the most, whereas PMLSi repelled it the least. Notably, all four copolymers suppressed platelet adhesion similarly. The variations in protein adsorption quantities among the four copolymer coatings were attributed to their distinct swelling behaviors in aqueous environments. Further investigations, including 3D scanning force microscopy and neutron reflectivity measurements, revealed that the PMLSi coating exhibited a higher water intake under aqueous conditions in comparison to the other coatings. Consequently, all copolymer coatings effectively prevented the invasion of platelets but the proteins penetrated the PMLSi network. Subsequently, the dynamic stability required to induce shear stress was evaluated using a circulation system. The results demonstrated that the PMMMSi and PMLSi coatings on PMP and PP exhibited exceptional platelet repellency and maintained high stability during circulation. This study highlights the potential of hydrophobic moieties to improve hemocompatibility and stability, offering potential applications in medical devices.
Collapse
Affiliation(s)
- Kazuto Uchida
- Department of Bioengineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Tsukuru Masuda
- Department of Bioengineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Shintaro Hara
- Department of Bioengineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- Department of Clinical Engineering, Tokyo Women's Medical University, 8-1, Kawada-cho, Shinjuku-ku, Tokyo 162-8666, Japan
| | - Youichi Matsuo
- Department of Bioengineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yuwei Liu
- Institute of Materials Structure Science, High Energy Accelerator Research Organization, 203-1, Shirakata, Tokai, Ibaraki 319-1106, Japan
| | - Hiroyuki Aoki
- Institute of Materials Structure Science, High Energy Accelerator Research Organization, 203-1, Shirakata, Tokai, Ibaraki 319-1106, Japan
- Materials and Life Science Division, J-PARC Center, Japan Atomic Energy Agency, 2-4, Shirakata, Tokai, Ibaraki 319-1195, Japan
| | - Yoshihiko Asano
- Division of Electrical Engineering and Computer Science, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Kazuki Miyata
- Division of Electrical Engineering and Computer Science, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
- WPI Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Takeshi Fukuma
- Division of Electrical Engineering and Computer Science, Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
- WPI Nano Life Science Institute (WPI-NanoLSI), Kanazawa University, Kakuma-machi, Kanazawa 920-1192, Japan
| | - Toshiya Ono
- Department of Biomedical Engineering, School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Takashi Isoyama
- Department of Biomedical Engineering, School of Medicine, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
- Department of Clinical Engineering, Kyorin University, 5-4-1 Shimorenjuku, Mitaka-shi, Tokyo 181-8612, Japan
| | - Madoka Takai
- Department of Bioengineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| |
Collapse
|
4
|
Jurku̅nas M, Talaikis M, Klimkevičius V, Pudžaitis V, Niaura G, Makuška R. Diblock Copolymers of Methacryloyloxyethyl Phosphorylcholine and Dopamine Methacrylamide: Synthesis and Real-Time Adsorption Dynamics by SEIRAS and RAIRS. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2024; 40:5945-5958. [PMID: 38456424 PMCID: PMC10956495 DOI: 10.1021/acs.langmuir.3c03925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Revised: 02/18/2024] [Accepted: 02/23/2024] [Indexed: 03/09/2024]
Abstract
Amphiphilic diblock copolymers containing a block of 2-methacryloyloxyethyl phosphorylcholine (MPC) with unique properties to prevent nonspecific protein adsorption and enhance lubrication in aqueous media and a block of dopamine methacrylamide (DOPMA) distinguished by excellent adhesion performance were synthesized by reversible addition fragmentation chain transfer (RAFT) polymerization for the first time. The DOPMA monomer with an acetonide-protected catechol group (acetonide-protected dopamine methacrylamide (ADOPMA)) was used, allowing the prevention of undesirable side reactions during polymerization and oxidation during storage. The adsorption behavior of the diblock copolymers with protected and unprotected catechol groups on gold surfaces was probed using attenuated total reflection (ATR)-Fourier transform infrared (FTIR) spectroscopy, surface-enhanced infrared absorption spectroscopy (SEIRAS), and reflection-absorption infrared spectroscopy (RAIRS). The copolymers pMPC-b-pADOPMA demonstrated physisorption with rapid adsorption and ultrasound-assisted desorption, while the copolymers pMPC-b-DOPMA exhibited chemical adsorption with slower dynamics but a stronger interaction with the gold surface. SEIRAS and RAIRS allowed proving the reorientation of the diblock copolymers during adsorption, demonstrating the exposure of the pMPC block toward the aqueous phase.
Collapse
Affiliation(s)
- Marijus Jurku̅nas
- Institute
of Chemistry, Vilnius University, Naugarduko Str. 24, 03225 Vilnius, Lithuania
| | - Martynas Talaikis
- Department
of Organic Chemistry, Center for Physical
Sciences and Technology (FTMC), Sauletekio Ave. 3, 10257 Vilnius, Lithuania
| | - Vaidas Klimkevičius
- Institute
of Chemistry, Vilnius University, Naugarduko Str. 24, 03225 Vilnius, Lithuania
| | - Vaidas Pudžaitis
- Department
of Organic Chemistry, Center for Physical
Sciences and Technology (FTMC), Sauletekio Ave. 3, 10257 Vilnius, Lithuania
| | - Gediminas Niaura
- Department
of Organic Chemistry, Center for Physical
Sciences and Technology (FTMC), Sauletekio Ave. 3, 10257 Vilnius, Lithuania
| | - Ričardas Makuška
- Institute
of Chemistry, Vilnius University, Naugarduko Str. 24, 03225 Vilnius, Lithuania
| |
Collapse
|
5
|
He K, Cai P, Ji S, Tang Z, Fang Z, Li W, Yu J, Su J, Luo Y, Zhang F, Wang T, Wang M, Wan C, Pan L, Ji B, Li D, Chen X. An Antidehydration Hydrogel Based on Zwitterionic Oligomers for Bioelectronic Interfacing. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2024; 36:e2311255. [PMID: 38030137 DOI: 10.1002/adma.202311255] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/26/2023] [Revised: 11/27/2023] [Indexed: 12/01/2023]
Abstract
Hydrogels are ideal interfacing materials for on-skin healthcare devices, yet their susceptibility to dehydration hinders their practical use. While incorporating hygroscopic metal salts can prevent dehydration and maintain ionic conductivity, concerns arise regarding metal toxicity due to the passage of small ions through the skin barrier. Herein, an antidehydration hydrogel enabled by the incorporation of zwitterionic oligomers into its network is reported. This hydrogel exhibits exceptional water retention properties, maintaining ≈88% of its weight at 40% relative humidity, 25 °C for 50 days and about 84% after being heated at 50 °C for 3 h. Crucially, the molecular weight design of the embedded oligomers prevents their penetration into the epidermis, as evidenced by experimental and molecular simulation results. The hydrogel allows stable signal acquisition in electrophysiological monitoring of humans and plants under low-humidity conditions. This research provides a promising strategy for the development of epidermis-safe and biocompatible antidehydration hydrogel interfaces for on-skin devices.
Collapse
Affiliation(s)
- Ke He
- Innovative Centre for Flexible Devices (iFLEX), Max Planck-NTU Joint Lab for Artificial Senses, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Pingqiang Cai
- Innovative Centre for Flexible Devices (iFLEX), Max Planck-NTU Joint Lab for Artificial Senses, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Shaobo Ji
- Innovative Centre for Flexible Devices (iFLEX), Max Planck-NTU Joint Lab for Artificial Senses, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Zihan Tang
- Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province, Department of Engineering Mechanics, Zhejiang University, Hangzhou, 310027, China
| | - Zhou Fang
- Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province, Department of Engineering Mechanics, Zhejiang University, Hangzhou, 310027, China
| | - Wenlong Li
- Innovative Centre for Flexible Devices (iFLEX), Max Planck-NTU Joint Lab for Artificial Senses, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Innovis, #08-03, Singapore, 138634, Singapore
| | - Jing Yu
- Institute for Digital Molecular Analytics and Science (IDMxS), Nanyang Technological University, 59 Nanyang Drive, Singapore, 636921, Singapore
| | - Jiangtao Su
- Innovative Centre for Flexible Devices (iFLEX), Max Planck-NTU Joint Lab for Artificial Senses, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Yifei Luo
- Innovative Centre for Flexible Devices (iFLEX), Max Planck-NTU Joint Lab for Artificial Senses, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
- Institute of Materials Research and Engineering (IMRE), Agency for Science, Technology and Research (A*STAR), 2 Fusionopolis Way, Innovis, #08-03, Singapore, 138634, Singapore
| | - Feilong Zhang
- Innovative Centre for Flexible Devices (iFLEX), Max Planck-NTU Joint Lab for Artificial Senses, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Ting Wang
- Innovative Centre for Flexible Devices (iFLEX), Max Planck-NTU Joint Lab for Artificial Senses, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Ming Wang
- Innovative Centre for Flexible Devices (iFLEX), Max Planck-NTU Joint Lab for Artificial Senses, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Changjin Wan
- Innovative Centre for Flexible Devices (iFLEX), Max Planck-NTU Joint Lab for Artificial Senses, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Liang Pan
- Innovative Centre for Flexible Devices (iFLEX), Max Planck-NTU Joint Lab for Artificial Senses, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
| | - Baohua Ji
- Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province, Department of Engineering Mechanics, Zhejiang University, Hangzhou, 310027, China
| | - Dechang Li
- Key Laboratory of Soft Machines and Smart Devices of Zhejiang Province, Department of Engineering Mechanics, Zhejiang University, Hangzhou, 310027, China
| | - Xiaodong Chen
- Innovative Centre for Flexible Devices (iFLEX), Max Planck-NTU Joint Lab for Artificial Senses, School of Materials Science and Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore
- Institute for Digital Molecular Analytics and Science (IDMxS), Nanyang Technological University, 59 Nanyang Drive, Singapore, 636921, Singapore
| |
Collapse
|
6
|
Zhou S, Miao D, Wen J, Zhang Q, Hu D, Liu N, Li J, Zhang Y, Wang K, Chen Y. Microcin C7-laden modified gelatin based biocomposite hydrogel for the treatment of periodontitis. Int J Biol Macromol 2024; 258:128293. [PMID: 38000587 DOI: 10.1016/j.ijbiomac.2023.128293] [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: 07/12/2023] [Revised: 11/14/2023] [Accepted: 11/18/2023] [Indexed: 11/26/2023]
Abstract
Periodontitis is an oral disease with the highest incidence globally, and plaque control is the key to its treatment. In this study, Microcin C7 was used to treat periodontitis, and a novel injectable temperature-sensitive sustained-release hydrogel was synthesized as an environmentally sensitive carrier for drug delivery. First, modified gelatin was formed from gelatin and glycidyl methacrylate. Then, Microcin C7-laden hydrogel was formed from cross-linking with double bonds between modified gelatin, N-isopropyl acrylamide, and 2-Methacryloyloxyethyl phosphorylcholine through radical polymerization, and the model drug Microcin C7 was loaded by electrostatic adsorption. The hydrogel has good temperature sensitivity, self-healing, and injectable properties. In vitro results showed that the hydrogel could slowly and continuously release Microcin C7 with good biocompatibility and biodegradability, with a remarkable antibacterial effect on Porphyromonas gingivalis. It also confirmed the antibacterial and anti-inflammatory effects of Microcin C7-laden hydrogel in a periodontitis rat model. The results showed that Microcin C7-laden hydrogel is a promising candidate for local drug delivery systems in periodontitis.
Collapse
Affiliation(s)
- Shuo Zhou
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an 710061, China; Department of Periodontology, College of Stomatology, Xi'an Jiaotong University, Xi'an 710061, China; Department of Stomatology, Xi'an People's Hospital, Xi'an Fourth Hospital, Xi'an 710004, China
| | - Di Miao
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an 710061, China; Department of Periodontology, College of Stomatology, Xi'an Jiaotong University, Xi'an 710061, China
| | - Jinpeng Wen
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an 710061, China
| | - Qianqian Zhang
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an 710061, China; Department of Orthodontics, College of Stomatology, Xi'an Jiaotong University, Xi'an 710061, China
| | - Datao Hu
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an 710061, China
| | - Na Liu
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an 710061, China; Department of Periodontology, College of Stomatology, Xi'an Jiaotong University, Xi'an 710061, China
| | - Jinyang Li
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an 710061, China; Department of Periodontology, College of Stomatology, Xi'an Jiaotong University, Xi'an 710061, China
| | - Yifan Zhang
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an 710061, China; Department of Periodontology, College of Stomatology, Xi'an Jiaotong University, Xi'an 710061, China
| | - Ke Wang
- School of Pharmacy, Health Science Center, Xi'an Jiaotong University, Xi'an 710061, China.
| | - Yue Chen
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an 710061, China; Department of Periodontology, College of Stomatology, Xi'an Jiaotong University, Xi'an 710061, China.
| |
Collapse
|
7
|
Khunsuk PO, Pongma C, Palaga T, Hoven VP. Zwitterionic Polymer-Decorated Lipid Nanoparticles for mRNA Delivery in Mammalian Cells. Biomacromolecules 2023; 24:5654-5665. [PMID: 37956106 DOI: 10.1021/acs.biomac.3c00649] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
Lipid nanoparticles (LNPs) play a key role in the effective transport of mRNA into cells for protein translation. Despite the stealthiness of poly(ethylene glycol) (PEG) that helps protect LNPs from protein absorption and blood clearance, the generation of anti-PEG antibodies resulting in PEG allergies remains a challenge for the development of an mRNA vaccine. Herein, a non-PEG lipid was developed by conjugating 1,2-dipalmitoyl-sn-glycero-3-phosphoethanolamine (DPPE) with an antifouling zwitterionic polymer, poly(2-methyacryloyloxyethyl phosphorylcholine) (PMPC), of different chain lengths. The PMPC-LNPs formulated from DPPE-PMPC were spherical (diameter ≈ 144-255 nm), neutral in charge, and stable at 4 °C for up to 28 days. Their fraction of stealthiness being close to 1 emphasized the antifouling characteristics of PMPC decorated on LNPs. The PMPC-LNPs were nontoxic to HEK293T cells, did not induce inflammatory responses in THP-1 cells, and exhibited an mRNA transfection efficiency superior to that of PEG-LNPs. This work demonstrated the potential of the developed zwitterionic polymer-conjugated LNPs as promising mRNA carriers.
Collapse
Affiliation(s)
- Phim-On Khunsuk
- Program in Petrochemistry and Polymer Science, Faculty of Science, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Chitsuda Pongma
- Graduate Program in Biotechnology, Faculty of Science, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Tanapat Palaga
- Department of Microbiology, Faculty of Science, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand
- Center of Excellence in Materials and Bio-interfaces, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| | - Voravee P Hoven
- Center of Excellence in Materials and Bio-interfaces, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand
- Department of Chemistry, Faculty of Science, Chulalongkorn University, Phayathai Road, Pathumwan, Bangkok 10330, Thailand
| |
Collapse
|
8
|
Iwasaki Y. Photoassisted Surface Modification with Zwitterionic Phosphorylcholine Polymers for the Fabrication of Ideal Biointerfaces. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:15417-15430. [PMID: 37899752 DOI: 10.1021/acs.langmuir.3c02696] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/31/2023]
Abstract
Surface modification using zwitterionic 2-methacryloyloxyethyl phosphorylcholine (MPC) polymers is commonly performed to fabricate interfaces that reduce nonspecific fouling by biomolecules and cells. Accordingly, several clinically used devices, such as guide wires, stents, oxygenators, left ventricular assist devices, and microcatheters have been modified using MPC polymers. The specific types of surface modifications vary across substrates and applications. Recently, photoreactions have garnered attention for surface modification due to their stability and tunability. This review highlights various studies that employed photoreactions to modify surfaces using MPC polymers, especially photoinduced graft polymerization of MPC. In addition to antifouling materials, several micromanipulated, long-lasting hydrophilic, and super antiwear surfaces are summarized. Furthermore, several photoreactive MPC polymers that can be used to control interactions between biomolecules and materials are presented along with their potential to form selective recognition surfaces that target biomolecules for biosensors and diagnostic devices.
Collapse
Affiliation(s)
- Yasuhiko Iwasaki
- Department of Chemistry and Materials Engineering, Faculty of Chemistry, Materials and Bioengineering, Kansai University 3-3-35 Yamate-cho, Suita-shi, Osaka 564-8680, Japan
| |
Collapse
|
9
|
Bui HL, Chen YL, Chuang YC, Ou K, Tsai YC, Huang CJ. Betainization of Polydopamine/Polyethylenimine Coating for Universal Zwitterionization. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:13169-13177. [PMID: 37680107 DOI: 10.1021/acs.langmuir.3c01585] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/09/2023]
Abstract
Biofoulants can adhere to multiple surfaces, degrading the performance of medical devices and industrial facilities and/or causing nosocomial infection. The surface immobilization of zwitterionic materials can prevent the initial attachment of the foulants but lacks extensive implementation. Herein, we propose a facile, universal, two-step surface modification strategy to improve fouling resistance. In the first step, the substrates were immersed in a codeposition solution containing dopamine and branched polyethylenimine (PEI) to form a "primer" layer (PDA/PEI). In the second step, the primer layers were treated with 1,3-propane sultone to betainize primary/secondary/tertiary amine moieties of PEI, generating zwitterions on substrates. After betainization, PS-grafted PDA/PEI (PDA/PEI/S) via a ring-opening alkylation reaction manifested changes in wettability. X-ray photoelectron spectroscopy revealed the presence of zwitterionic moieties on the PDA/PEI/S surfaces. Further investigations using ellipsometry and atomic force microscopy were conducted to scrutinize the relation among the PEI content, film thickness, primer stability, and betainization. As a result, zwitterion-decorated substrates prepared under optimal conditions can exhibit high resistance against bacterial fouling, achieving a 98.5% reduction in bacterial attachment. In addition, the method shows a substrate-independent property, capable of successfully applying it on organic and inorganic substrates. Finally, the newly developed approach shows excellent biocompatibility, displaying no significant difference compared with blank control samples. Overall, we envision that the facile surface modification strategy can further promote the preparation of zwitterion-decorated materials in the future.
Collapse
Affiliation(s)
- Hoang Linh Bui
- Department of Biomedical Sciences and Engineering, National Central University, Jhong-li, Taoyuan 32023, Taiwan
| | - Yin-Lin Chen
- Department of Chemical and Materials Engineering, National Central University, Jhong-li, Taoyuan 32023, Taiwan
| | - Ying-Chieh Chuang
- Department of Chemical and Materials Engineering, National Central University, Jhong-li, Taoyuan 32023, Taiwan
| | - Kai Ou
- Department of Chemical and Materials Engineering, National Central University, Jhong-li, Taoyuan 32023, Taiwan
| | - Yao-Chou Tsai
- Department of Surgery, Taipei Tzuchi Hospital, Buddhist Tzu Chi Medical Foundation, New Taipei 23142, Taiwan
- Department of Urology, Tzu Chi University, Medical College, Hualien 97004, Taiwan
| | - Chun-Jen Huang
- Department of Chemical and Materials Engineering, National Central University, Jhong-li, Taoyuan 32023, Taiwan
- R&D Center for Membrane Technology, Chung Yuan Christian University, Jhongli, Taoyuan 32023, Taiwan
- NCU-Covestro Research Center, National Central University, Jhong-Li, Taoyuan 32023, Taiwan
| |
Collapse
|
10
|
Ishihara K, Shi X, Fukazawa K, Yamaoka T, Yao G, Wu JY. Biomimetic-Engineered Silicone Hydrogel Contact Lens Materials. ACS APPLIED BIO MATERIALS 2023; 6:3600-3616. [PMID: 37616500 PMCID: PMC10521029 DOI: 10.1021/acsabm.3c00296] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2023] [Accepted: 08/16/2023] [Indexed: 08/26/2023]
Abstract
Contact lenses are one of the most successful applications of biomaterials. The chemical structure of the polymers used in contact lenses plays an important role in determining the function of contact lenses. Different types of contact lenses have been developed based on the chemical structure of polymers. When designing contact lenses, materials scientists consider factors such as mechanical properties, processing properties, optical properties, histocompatibility, and antifouling properties, to ensure long-term wear with minimal discomfort. Advances in contact lens materials have addressed traditional issues such as oxygen permeability and biocompatibility, improving overall comfort, and duration of use. For example, silicone hydrogel contact lenses with high oxygen permeability were developed to extend the duration of use. In addition, controlling the surface properties of contact lenses in direct contact with the cornea tissue through surface polymer modification mimics the surface morphology of corneal tissue while maintaining the essential properties of the contact lens, a significant improvement for long-term use and reuse of contact lenses. This review presents the material science elements required for advanced contact lenses of the future and summarizes the chemical methods for achieving these goals.
Collapse
Affiliation(s)
- Kazuhiko Ishihara
- Division
of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Xinfeng Shi
- Alcon
Research, LLC, Fort Worth, Texas 76134, United States
| | - Kyoko Fukazawa
- National
Cerebral and Cardiovascular Center Research Institute, Suita, Osaka 564-8565, Japan
| | - Tetsuji Yamaoka
- National
Cerebral and Cardiovascular Center Research Institute, Suita, Osaka 564-8565, Japan
| | - George Yao
- Alcon
Research, LLC, Duluth, Georgia 30097, United States
| | | |
Collapse
|
11
|
Filipecka-Szymczyk K, Makowska-Janusik M, Marczak W. Molecular Dynamics Simulation of Hydrogels Based on Phosphorylcholine-Containing Copolymers for Soft Contact Lens Applications. Molecules 2023; 28:6562. [PMID: 37764338 PMCID: PMC10535866 DOI: 10.3390/molecules28186562] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Revised: 09/04/2023] [Accepted: 09/06/2023] [Indexed: 09/29/2023] Open
Abstract
The structure and dynamics of copolymers of 2-hydroxyethyl methacrylate (HEMA) with 2-methacryloyloxyethyl phosphorylcholine (MPC) were studied by molecular dynamics simulations. In total, 20 systems were analyzed. They differed in numerical fractions of the MPC in the copolymer chain, equal to 0.26 and 0.74, in the sequence of mers, block and random, and the water content, from 0 to 60% by mass. HEMA side chains proved relatively rigid and stable in all considered configurations. MPC side chains, in contrast, were mobile and flexible. Water substantially influenced their dynamics. The copolymer swelling caused by water resulted in diffusion channels, pronounced in highly hydrated systems. Water in the hydrates existed in two states: those that bond to the polymer chain and the free one; the latter was similar to bulk water but with a lower self-diffusion coefficient. The results proved that molecular dynamics simulations could facilitate the preliminary selection of the polymer materials for specific purposes before their synthesis.
Collapse
Affiliation(s)
| | | | - Wojciech Marczak
- Faculty of Science and Technology, Jan Dlugosz University, Al. Armii Krajowej 13/15, 42-200 Częstochowa, Poland; (K.F.-S.); (M.M.-J.)
| |
Collapse
|
12
|
Qian S, Lin HA, Pan Q, Zhang S, Zhang Y, Geng Z, Wu Q, He Y, Zhu B. Chemically revised conducting polymers with inflammation resistance for intimate bioelectronic electrocoupling. Bioact Mater 2023; 26:24-51. [PMID: 36875055 PMCID: PMC9975642 DOI: 10.1016/j.bioactmat.2023.02.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 01/26/2023] [Accepted: 02/10/2023] [Indexed: 02/23/2023] Open
Abstract
Conducting polymers offer attractive mixed ionic-electronic conductivity, tunable interfacial barrier with metal, tissue matchable softness, and versatile chemical functionalization, making them robust to bridge the gap between brain tissue and electronic circuits. This review focuses on chemically revised conducting polymers, combined with their superior and controllable electrochemical performance, to fabricate long-term bioelectronic implants, addressing chronic immune responses, weak neuron attraction, and long-term electrocommunication instability challenges. Moreover, the promising progress of zwitterionic conducting polymers in bioelectronic implants (≥4 weeks stable implantation) is highlighted, followed by a comment on their current evolution toward selective neural coupling and reimplantable function. Finally, a critical forward look at the future of zwitterionic conducting polymers for in vivo bioelectronic devices is provided.
Collapse
Affiliation(s)
- Sihao Qian
- State Key Laboratory for Modification of Chemical Fibers and Polymer Materials, College of Materials Science and Engineering, Donghua University, Shanghai, 201620, China.,School of Materials Science and Engineering & Shanghai Engineering Research Center of Organ Repair, Shanghai University, Shanghai, 200444, China
| | - Hsing-An Lin
- School of Materials Science and Engineering & Shanghai Engineering Research Center of Organ Repair, Shanghai University, Shanghai, 200444, China
| | - Qichao Pan
- School of Materials Science and Engineering & Shanghai Engineering Research Center of Organ Repair, Shanghai University, Shanghai, 200444, China
| | - Shuhua Zhang
- School of Materials Science and Engineering & Shanghai Engineering Research Center of Organ Repair, Shanghai University, Shanghai, 200444, China
| | - Yunhua Zhang
- School of Materials Science and Engineering & Shanghai Engineering Research Center of Organ Repair, Shanghai University, Shanghai, 200444, China
| | - Zhi Geng
- School of Materials Science and Engineering & Shanghai Engineering Research Center of Organ Repair, Shanghai University, Shanghai, 200444, China
| | - Qing Wu
- School of Materials Science and Engineering & Shanghai Engineering Research Center of Organ Repair, Shanghai University, Shanghai, 200444, China
| | - Yong He
- Innovation Center for Textile Science and Technology, Donghua University, Shanghai, 201620, China
| | - Bo Zhu
- School of Materials Science and Engineering & Shanghai Engineering Research Center of Organ Repair, Shanghai University, Shanghai, 200444, China
| |
Collapse
|
13
|
Harris V, Pifer R, Shannon P, Crary M. Comparative Evaluation of Pseudomonas aeruginosa Adhesion to a Poly-(2-Methacryloyloxyethyl Phosphorylcholine)-Modified Silicone Hydrogel Contact Lens. Vision (Basel) 2023; 7:vision7010027. [PMID: 36977307 PMCID: PMC10056565 DOI: 10.3390/vision7010027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 03/17/2023] [Accepted: 03/19/2023] [Indexed: 03/30/2023] Open
Abstract
Pseudomonas aeruginosa is the most common causative agent associated with microbial keratitis. During contact lens wear, pathogens may be introduced into the ocular environment, which might cause adverse events. Lehfilcon A is a recently developed contact lens with a water gradient surface composed of polymeric 2-methacryloyloxyethyl phosphorylcholine (MPC). MPC is re-ported to impart anti-biofouling properties onto modified substrates. Therefore, in this in vitro experimental study, we tested the capability of lehfilcon A to resist adhesion by P. aeruginosa. Quantitative bacterial adhesion assays using five strains of P. aeruginosa were conducted to compare the adherence properties of lehfilcon A to five currently marketed silicone hydrogel (SiHy) contact lenses (comfilcon A, fanfilcon A, senofilcon A, senofilcon C, and samfilcon A). Compared to lehfilcon A, we observed 26.7 ± 8.8 times (p = 0.0028) more P. aeruginosa binding to comfilcon A, 30.0 ± 10.8 times (p = 0.0038) more binding to fanfilcon A, 18.2 ± 6.2 times (p = 0.0034) more binding to senofilcon A, 13.6 ± 3.9 times (p = 0.0019) more binding to senofilcon C, and 29.5 ± 11.8 times (p = 0.0057) more binding to samfilcon A. These results demonstrate that, for various strains of P. aeruginosa, lehfilcon A reduces bacterial adhesion compared to other contact lens materials.
Collapse
Affiliation(s)
| | - Reed Pifer
- Alcon Research, LLC, Fort Worth, TX 76134, USA
| | | | | |
Collapse
|
14
|
Noda T, Matsuda M, Suzuki H, Okawa Y, Mitani M. Effective Blocking and Stabilizing Methods Using Synthetic Polymer on ELISA. Methods Mol Biol 2023; 2612:59-71. [PMID: 36795359 DOI: 10.1007/978-1-0716-2903-1_5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/17/2023]
Abstract
In ELISA, blocking reagents and stabilizers are important to improve the sensitivity and/or quantitative nature of the measurement system. Usually, biological substances such as bovine serum albumin and casein are used, but they still have problems such as lot-to-lot differences and biohazard. Here, we describe the methods using a chemically synthesized polymer, BIOLIPIDURE®, as a new blocking agent and stabilizer that can solve these problems.
Collapse
Affiliation(s)
- Tomozumi Noda
- NOF CORPORATION, Life Science Products Division, Tokyo, Japan
| | - Masaru Matsuda
- NOF CORPORATION, Life Science Products Division, Tokyo, Japan
| | - Hirotaka Suzuki
- NOF CORPORATION, Life Science Products Division, Tokyo, Japan
| | - Yusuke Okawa
- NOF CORPORATION, Life Science Products Division, Tokyo, Japan
| | - Motohiro Mitani
- NOF CORPORATION, Life Science Products Division, Tokyo, Japan
| |
Collapse
|
15
|
Yang L, Zhao X, Liao X, Wang R, Fan Z, Ma S, Zhou F. Biomimetic chitosan-derived bifunctional lubricant with superior antibacterial and hydration lubrication performances. J Colloid Interface Sci 2023; 629:859-870. [PMID: 36202029 DOI: 10.1016/j.jcis.2022.09.098] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 09/18/2022] [Accepted: 09/19/2022] [Indexed: 11/25/2022]
Abstract
The lubrication deficiency in joints is a major cause of osteoarthritis. One of the most commonly used treatment means is to inject artificial lubricants, but there is a potential risk of infection during the injection process. Therefore, developing artificial lubricants with dual functions of friction-reduction and antibacterial is urgent. In this work, a novel polysaccharide-derived lubricant with simultaneous anti-bacteria and water-lubrication properties, called CS-MPC-N, is developed by grafting 2‑methacryloyloxylethyl phosphorylcholine (MPC) and nisin peptide onto backbone of chitosan (CS). Compared to the control CS, CS-MPC-N exhibits good lubrication and friction-reduction properties because of its excellent water solubility. Especially, CS-MPC-N shows low friction coefficient (0.03 ∼ 0.05) at the sliding interfaces of artificial joints materials or even natural articular cartilages. Moreover, CS-MPC-N can effectively inhibit the proliferation of Staphylococcus aureu, exhibiting excellent antibacterial effect. This kind of novel polysaccharide-derived lubricant is expected to be used in treating infectious arthritis.
Collapse
Affiliation(s)
- Lumin Yang
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China; Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaoduo Zhao
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China; Shandong Laboratory of Yantai Advanced Materials and Green Manufacture, Yantai Zhongke Research Institute of Advanced Materials and Green Chemical Engineering, Yantai 264006, China
| | - Xiaozhu Liao
- School of the Stomatology and Second Hospital, Lanzhou University, Lanzhou 730000, China
| | - Rui Wang
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China; Shandong Laboratory of Yantai Advanced Materials and Green Manufacture, Yantai Zhongke Research Institute of Advanced Materials and Green Chemical Engineering, Yantai 264006, China
| | - Zengjie Fan
- School of the Stomatology and Second Hospital, Lanzhou University, Lanzhou 730000, China
| | - Shuanhong Ma
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China; Shandong Laboratory of Yantai Advanced Materials and Green Manufacture, Yantai Zhongke Research Institute of Advanced Materials and Green Chemical Engineering, Yantai 264006, China.
| | - Feng Zhou
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.
| |
Collapse
|
16
|
Synthesis of Superhydrophilic Gradient-Like Copolymers: Kinetics of the RAFT Copolymerization of Methacryloyloxyethyl Phosphorylcholine with PEO Methacrylate. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
|
17
|
Nie L, Li Y, Liu Y, Shi L, Chen H. Recent Applications of Contact Lenses for Bacterial Corneal Keratitis Therapeutics: A Review. Pharmaceutics 2022; 14:2635. [PMID: 36559128 PMCID: PMC9786638 DOI: 10.3390/pharmaceutics14122635] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2022] [Revised: 11/23/2022] [Accepted: 11/25/2022] [Indexed: 11/30/2022] Open
Abstract
Corneal keratitis is a common but severe infectious disease; without immediate and efficient treatment, it can lead to vision loss within a few days. With the development of antibiotic resistance, novel approaches have been developed to combat corneal keratitis. Contact lenses were initially developed to correct vision. Although silicon hydrogel-based contact lenses protect the cornea from hypoxic stress from overnight wear, wearing contact lenses was reported as an essential cause of corneal keratitis. With the development of technology, contact lenses are integrated with advanced functions, and functionalized contact lenses are used for killing bacteria and preventing infectious corneal keratitis. In this review, we aim to examine the current applications of contact lenses for anti-corneal keratitis.
Collapse
Affiliation(s)
- Linyan Nie
- Department of Ophthalmology, The People’s Hospital of Yuhuan, Yuhuan 317600, China
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
| | - Yuanfeng Li
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
| | - Yong Liu
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
| | - Linqi Shi
- Oujiang Laboratory (Zhejiang Lab for Regenerative Medicine, Vision and Brain Health), Wenzhou Institute, University of Chinese Academy of Sciences, Wenzhou 325001, China
| | - Huiyun Chen
- Department of Ophthalmology, The People’s Hospital of Yuhuan, Yuhuan 317600, China
| |
Collapse
|
18
|
Van der Waals interactions regulating the hydration of 2-methacryloyloxyethyl phosphorylcholine, the constructing monomer of biocompatible polymers. Sci Rep 2022; 12:20393. [PMID: 36437358 PMCID: PMC9701782 DOI: 10.1038/s41598-022-24841-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Accepted: 11/21/2022] [Indexed: 11/29/2022] Open
Abstract
Van der Waals (VDW) interactions provide fantastic properties for biological systems that function at room temperature. The VDW interaction, which primarily contributes to weak hydrogen bonding, is expected to play a key role in regulating hydrophobic hydration to express the biologically inert biocompatible function of polymerized MPCs (2-methacryloyloxyethyl phosphorylcholine). This report explores at the molecular level the biologically inert function of polymerized MPCs through an array of vibrational spectroscopic and computational characterization of MPC monomers, as temperature-dependent change of intramolecular weak hydrogen bonding. Synchrotron Fourier transform infrared microspectroscopy and terahertz time-domain spectroscopy were used to investigate temperature-dependent spectral changes in the low frequency vibrations of the MPC over the temperature range from cryogenic to room temperature, and the results were analysed by highly reliable well-established density functional theory (DFT) calculations. Complicated spectral features in the low frequency energy region and the uncertain conformations of the MPC in the amorphous powder state are clearly resolved under a polarizable continuum model and dispersion correction to pure DFT calculations.
Collapse
|
19
|
Improvement of Oral Absorption of Poorly Water-Soluble Drugs by Solid Dispersions with Amphiphilic Phospholipid Polymer. J Pharm Sci 2022; 111:3141-3148. [PMID: 36028136 DOI: 10.1016/j.xphs.2022.08.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Revised: 07/22/2022] [Accepted: 08/07/2022] [Indexed: 12/14/2022]
Abstract
Solid dispersions are one of methods for solubilizing water-insoluble drugs. To enhance the bioavailability, maintenance of the supersaturated state and absorption of the dissolved drug in the gastrointestinal tract are important. We designed and synthesized amphiphilic 2-methacryloyloxyethyl phosphorylcholine (MPC) copolymers as carriers for solid dispersions and evaluated the dissolution behavior in test solutions with different pH and additives. Solid dispersion of troglitazone with amphiphilic MPC copolymers having both aromatic rings and urethane bonds in the side chains showed rapid dissolution and excellent supersaturation maintenance. It was indicated that the balance between the interactions with drug molecules and the water affinity of the polymer should be considered when carriers for solid dispersions are designed. In addition, cell membrane permeability of the solid dispersion with the amphiphilic MPC copolymer was evaluated by the Dissolution / Permeation system, which consists of two liquid chambers and a monolayer of epithelial cells that mimics the intestinal dissolution and permeation process. Further, blood concentration of the drug when solid dispersions were orally administered in mice was also evaluated. The cell membrane permeability and oral absorbability were significantly improved, compared to the solid dispersions with poly(N-vinylpyrrolidone) and suspension or solution of crystalline troglitazone.
Collapse
|
20
|
Damsongsang P, Yusa SI, Hoven VP. Zwitterionic nano-objects having functionalizable hydrophobic core: Formation via polymerization-induced self-assembly and their morphology. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
21
|
Ishihara K. Biomimetic materials based on zwitterionic polymers toward human-friendly medical devices. SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS 2022; 23:498-524. [PMID: 36117516 PMCID: PMC9481090 DOI: 10.1080/14686996.2022.2119883] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 08/26/2022] [Accepted: 08/28/2022] [Indexed: 06/01/2023]
Abstract
This review summarizes recent research on the design of polymer material systems based on biomimetic concepts and reports on the medical devices that implement these systems. Biomolecules such as proteins, nucleic acids, and phospholipids, present in living organisms, play important roles in biological activities. These molecules are characterized by heterogenic nature with hydrophilicity and hydrophobicity, and a balance of positive and negative charges, which provide unique reaction fields, interfaces, and functionality. Incorporating these molecules into artificial systems is expected to advance material science considerably. This approach to material design is exceptionally practical for medical devices that are in contact with living organisms. Here, it is focused on zwitterionic polymers with intramolecularly balanced charges and introduce examples of their applications in medical devices. Their unique properties make these polymers potential surface modification materials to enhance the performance and safety of conventional medical devices. This review discusses these devices; moreover, new surface technologies have been summarized for developing human-friendly medical devices using zwitterionic polymers in the cardiovascular, cerebrovascular, orthopedic, and ophthalmology fields.
Collapse
Affiliation(s)
- Kazuhiko Ishihara
- Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University, Osaka, Japan
| |
Collapse
|
22
|
Wesley G, Giedd B, Hines B, Bickle K, Pearson C, Lorentz H. Safety and Efficacy of a New Water Gradient Biomimetic Monthly Replacement Spherical Contact Lens Material (Lehfilcon A). Clin Ophthalmol 2022; 16:2873-2884. [PMID: 36065354 PMCID: PMC9440676 DOI: 10.2147/opth.s362926] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 08/15/2022] [Indexed: 11/25/2022] Open
Abstract
Purpose The objective of this study was to evaluate the safety and performance of the investigational lens, lehfilcon A, when worn in a daily wear modality and replaced monthly as compared to the commercially available comfilcon A contact lens. Methods This was a multicenter, prospective, controlled, double-masked, randomized, parallel-group clinical study with bilateral lens wear for 3 months. In all, 115 subjects completed the study (77 with test lehfilcon A and 38 with control comfilcon A contact lenses). Distance visual acuity (VA) was assessed using Snellen VA. Lens performance was assessed by examining lens fit/movement, centration, front surface wettability and front/back surface deposits using slit-lamp biomicroscopy. Results At the 3-month follow-up visit, all eyes had a distance VA of 20/20 or better. Further, lens fit/movement was assessed as optimal in 92.9% of the eyes with lehfilcon A and 89.2% with comfilcon A. There were no ratings of unacceptably tight or loose fits for either contact lens material. Lens centration was assessed as optimal in 98.7% of eyes with lehfilcon A and 94.6% with comfilcon A. For front and back surface deposits, both materials showed minimal lens surface deposits. Front surface wettability was assessed as grade 0 or 1 for most of the study lenses in both lens groups across all attended study visits. There were no ocular adverse events related to the study lenses. Conclusion Overall, lehfilcon A showed excellent VA, optimal lens fitting characteristics, a clean surface, high wettability, and low risk for adverse events after 3 months of lens wear.
Collapse
Affiliation(s)
| | - Brad Giedd
- Kindred Optics at Maitland Vision, Maitland, FL, USA
| | | | | | | | - Holly Lorentz
- Alcon Research, LLC, Johns Creek, GA, USA
- Correspondence: Holly Lorentz, Alcon Research, LLC, 11460 Johns Creek Pkwy, Johns Creek, GA, 30097, USA, Tel +1 678 415 5272, Email
| |
Collapse
|
23
|
|
24
|
Ma G, Ji F, Lin W, Chen S. Determination of non-freezing water in different nonfouling materials by differential scanning calorimetry. JOURNAL OF BIOMATERIALS SCIENCE. POLYMER EDITION 2022; 33:1012-1024. [PMID: 35073220 DOI: 10.1080/09205063.2022.2034285] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Nonfouling materials have attracted increasing interest for their excellent biocompatibility and low immunogenicity. Strong hydration is believed to be the key reason for their resisting capability to nonspecific protein adsorption. However, little attention has been paid to quantifying their strong water binding capacity. In this study, we synthesized four zwitterionic polymers, including poly(sulfobetaine methacrylate) (pSBMA), poly(carboxybetaine methacrylate) (pCBMA), poly(carboxybetaine acrylamide) (pCBAA) and poly(2-methacryloyloxyethyl phosphorylcholine) (pMPC), and compared non-freezing water of these zwitterionic polymers with typical antifouling polymer poly(ethylene glycol) (PEG) using differential scanning calorimetry (DSC). Non-freezing water of their monomers was also investigated. The non-freezing water of the polymers (per unit) is pMPC (10.7 ± 1.4) ≈ pCBAA (10.8 ± 1.5) > pCBMA (9.0 ± 0.6) > pSBMA (6.6 ± 0.4) > PEG20000 (0.60 ± 0.04). Similar trend is observed for their monomers. For all studied zwitterionic materials, they showed higher binding capacity than PEG. We attribute the stronger hydration of zwitterionic polymers to their strong electrostatic interactions.
Collapse
Affiliation(s)
- Guanglong Ma
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, PR China.,Centre for Cancer Immunology, Faculty of Medicine, University of Southampton, Southampton, UK
| | - Fangqin Ji
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, PR China.,Taizhou Technician College, Taizhou, PR China
| | - Weifeng Lin
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, PR China.,Department of Molecular Chemistry and Materials Science, Weizmann Institute of Science, Rehovot, Israel
| | - Shengfu Chen
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou, PR China
| |
Collapse
|
25
|
Moriwaki S, Yoshizaki Y, Konno T. Phospholipid polymer hydrogels with rapid dissociation for reversible cell immobilization. J Mater Chem B 2022; 10:2628-2636. [PMID: 35015009 DOI: 10.1039/d1tb02316k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A reversible and cytocompatible cell immobilization polymer matrix with a rapid dissociation rate was prepared using a zwitterionic phospholipid polymer bearing phenylboronic acid and poly(vinyl alcohol) (PVA). A reversible and spontaneously forming phospholipid polymer hydrogel is reported for use as a cell immobilization matrix which caused no invasive damage to the cells. To improve the possibility of applying the hydrogels as a reversible cell immobilization matrix, the stimuli-responsive dissociation rate of polymer hydrogels was designed to have a more rapid rate to ease the recovery of the immobilized cells. In this study, a phospholipid polymer containing 3-methacrylamide phenylboronic acid (MAPBA) as the phenylboronic acid unit was synthesized. The water-soluble phospholipid polymer (PMB-MAPBA) can spontaneously form polymer hydrogels after mixing with PVA solution under normal pressure, room temperature, and neutral pH conditions. Also, the dissociation of the hydrogels after the addition of D-sorbitol completely occurred within 10 minutes. The cells were easily immobilized on the hydrogels during the preparation process. Also, the recovery ratio of the immobilized cells was improved due to the rapid dissociation of the hydrogels. The reversible and spontaneously formed phospholipid polymer hydrogels are promising for use as soft materials for platforms for cell engineering.
Collapse
Affiliation(s)
- Sachi Moriwaki
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3, Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan.
| | - Yuta Yoshizaki
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3, Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan.
| | - Tomohiro Konno
- Graduate School of Pharmaceutical Sciences, Tohoku University, 6-3, Aoba, Aramaki, Aoba-ku, Sendai 980-8578, Japan.
| |
Collapse
|
26
|
Qian Y, Zhao J, Liu L, Hu H, Wang B, Zhang H. Bioinspired Phosphorylcholine Coating for Surface Functionalization of Interventional Biomedical Implants with Bacterial Resistance and Anti-Encrustation Properties. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2022; 38:3597-3606. [PMID: 35266725 DOI: 10.1021/acs.langmuir.2c00263] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Enhancing the lubrication property and bacterial resistance is extremely important for interventional biomedical implants to avoid soft tissue damage and biofilm formation. In this study, a zwitterionic phosphorylcholine coating (PMPC) was successfully developed to achieve surface functionalization of a polyurethane (PU)-based ureteral stent via subsurface "grafting from" photopolymerization. Typical surface characterizations such as Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and surface wettability and morphology analyses examined by scanning electron microscopy, atomic force microscopy, and transmission electron microscopy demonstrated that the phosphorylcholine polymer was grafted on the substrate with a thickness of 180 nm. Additionally, the tribological experiment performed by a universal material tester showed that the lubrication performance of PU-PMPC was significantly improved compared with that of PU. The in vitro experiments indicated that the PMPC coating was biocompatible and stably modified on the surface of the substrate with an excellent bacterial resistance rate of >90%. Furthermore, the result of the in vivo experiment showed that the anti-encrustation performance of the surface-functionalized ureteral stent was better than that of the bare ureteral stent. The great enhancement in the lubrication, bacterial resistance, and anti-encrustation properties of the phosphorylcholine coating was thought to be due to the hydration effects of the zwitterionic charges. In summary, the bioinspired zwitterionic phosphorylcholine coating developed herein achieved significantly improved lubrication, bacterial resistance, and anti-encrustation performances and could be used as a convenient approach for surface functionalization of interventional biomedical implants.
Collapse
Affiliation(s)
- Yifu Qian
- School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
- State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
| | - Jing Zhao
- Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
| | - Long Liu
- School of Chemical Engineering and Technology, Hainan University, Haikou 570228, China
| | - Hao Hu
- Department of Urology, Peking University People's Hospital, Beijing 100044, China
| | - Bo Wang
- School of Chemical and Biological Engineering, Shandong University of Science and Technology, Qingdao 266590, China
| | - Hongyu Zhang
- State Key Laboratory of Tribology, Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China
| |
Collapse
|
27
|
Nekrasova T, Nazarova O, Vlasova E, Fischer A, Zolotova Y, Bezrukova M, Panarin E. Interpolymer Complexes of Poly(methacryloyloxyethyl phosphorylcholine) and Polyacids. Polymers (Basel) 2022; 14:407. [PMID: 35160398 PMCID: PMC8839767 DOI: 10.3390/polym14030407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 01/13/2022] [Accepted: 01/17/2022] [Indexed: 11/25/2022] Open
Abstract
It has been shown that macromolecules of poly(methacryloyloxyethyl phosphorylcholine) can form hydrogen bonded interpolymer complexes with homo- and copolymers of carboxylic acids and with poly(vinylphosphonic) acid in aqueous solutions. Polarized luminescence and IR spectroscopy were applied in the investigation. Nanosecond relaxation times characterizing the mobility of the chain fragments for the initial luminescent labeled polymers were determined and their changes by a factor of 2-50 were established during the formation of an interpolymer complex. Hydrogen bonds play a dominant role in the formation of these complexes. Hydrophobic interactions serve as an additional stabilizing factor. It is established that poly(methacryloyloxyethyl phosphorylcholine)/poly(vinylphosphonic acid) complex forms a looser structure in comparison with those for polycarboxylic acids as result of electrostatic repulsion between charged groups.
Collapse
Affiliation(s)
- Tatiana Nekrasova
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Bolshoi Pr. 31, 199004 St Petersburg, Russia; (O.N.); (E.V.); (A.F.); (M.B.); (E.P.)
| | | | | | | | - Yuliya Zolotova
- Institute of Macromolecular Compounds, Russian Academy of Sciences, Bolshoi Pr. 31, 199004 St Petersburg, Russia; (O.N.); (E.V.); (A.F.); (M.B.); (E.P.)
| | | | | |
Collapse
|
28
|
Chang WH, Liu PY, Lin DE, Jiang YT, Lu CJ, Hsu YHH. Dynamic Protein Adsorption-Desorption Analysis of Contact Lenses in a Three-Dimensional-Printed Eye Model. Macromol Res 2022. [DOI: 10.1007/s13233-022-0003-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
29
|
Seetasang S, Xu Y. Recent progress and perspectives in applications of 2-methacryloyloxyethyl phosphorylcholine polymers in biodevices at small scales. J Mater Chem B 2022; 10:2323-2337. [DOI: 10.1039/d1tb02675e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bioinspired materials have attracted attention in a wide range of fields. Among these materials, a polymer family containing 2-methacryloyloxyethyl phosphorylcholine (MPC), which has a zwitterionic phosphorylcholine headgroup inspired by the...
Collapse
|
30
|
Ishihara K, Narita Y, Teramura Y, Fukazawa K. Preparation of Magnetic Hydrogel Microparticles with Cationic Surfaces and Their Cell-Assembling Performance. ACS Biomater Sci Eng 2021; 7:5107-5117. [PMID: 34677934 DOI: 10.1021/acsbiomaterials.1c01150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Cationic magnetic hydrogel microparticles with high retention on cell surfaces were prepared using a two-step procedure. Using these magnetic hydrogel microparticles, cells were clustered with each other, and cell aggregates were prepared effectively. Cross-linked poly(vinyl alcohol) (PVA) hydrogel microparticles containing iron oxide nanoparticles were prepared. The diameter of the microparticles was in the range of 200-500 nm. Water-soluble cationic polymers containing both trimethyl ammonium (TMA) groups and phenylboronic acid (PBA) groups were synthesized for the surface modification of the microparticles. To regulate the composition, electrically neutral phosphorylcholine groups were introduced into the polymer. Covalent bonds were formed between the hydroxy groups of PVA microparticles and PBA groups in the polymer. The surface zeta potential of the microparticles reflected the composition of the TMA groups. The particles responded to an external magnetic field and clustered rapidly. Microparticles were adsorbed on the floating cell surface and induced cell aggregation quickly when a magnetic field was applied. Under the most effective conditions, the diameter of the cell aggregates increased to approximately 1 mm after 30 min. Denser cell aggregates were formed by the synergistic effects of the magnetic field and the properties of the microparticles. The formed cell aggregates continued to grow for more than 4 days under an applied magnetic field, indicating that the ability of the cells in the aggregate to proliferate was well maintained.
Collapse
Affiliation(s)
- Kazuhiko Ishihara
- Department of Materials Engineering, School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan.,Department of Bioengineering, School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yusuke Narita
- Department of Materials Engineering, School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Yuji Teramura
- Department of Bioengineering, School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Kyoko Fukazawa
- Department of Materials Engineering, School of Engineering, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| |
Collapse
|
31
|
Chiu CY, Chang Y, Liu TH, Chou YN, Yen TJ. Convergent charge interval spacing of zwitterionic 4-vinylpyridine carboxybetaine structures for superior blood-inert regulation in amphiphilic phases. J Mater Chem B 2021; 9:8437-8450. [PMID: 34542146 DOI: 10.1039/d1tb01374b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Antifouling materials are indispensable in the biomedical field, but their high hydrophilicity and surface free energy provoke contamination on surfaces under atmospheric conditions, thus limiting their applicability in medical devices. This study proposes a new zwitterionic structure, 4-vinylpyridine carboxybetaine (4VPCB), that results in lower surface free energy and increases biological inertness. In the design of 4VPCB, one to three carbon atoms are inserted between the positive charge and negative charge (carbon space length, CSL) of the pyridyl-containing side chain to adjust hydration with water molecules. The pyridine in the 4VPCB structure provides the hydrophobicity of the zwitterionic functional group, and thus it can have a lower free energy in the gas phase but maintain higher hydrophilicity in the liquid phase environment. Surface plasmon resonance and confocal microscopy were used to analyze the antiprotein adsorption and anti-blood cell adhesion properties of the P4VPCB brush surface. The results showed that the CSL in the P4VPCB structure affected the biological inertness of the surface. The protein adsorption on the surface of P4VPCB2 (CSL= 2) is lower than that on the surfaces of P4VPCB1 (CSL = 1) and P4VPCB3 (CSL = 3), and the optimal resistance to protein adsorption can be reduced to 7.5 ng cm-2. The surface of P4VPCB2 can also exhibit excellent blood-inert function in the adhesion test with various human blood cells, offering a potential possibility for the future design of a new generation of blood-inert medical materials.
Collapse
Affiliation(s)
- Chieh-Yang Chiu
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan.
| | - Yung Chang
- R&D Center for Membrane Technology and Department of Chemical Engineering, Chung Yuan Christian University, Chung-Li, Taoyuan 320, Taiwan.
| | - Tzu-Hao Liu
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan.
| | - Ying-Nien Chou
- R&D Center for Membrane Technology and Department of Chemical Engineering, Chung Yuan Christian University, Chung-Li, Taoyuan 320, Taiwan.
| | - Ta-Jen Yen
- Department of Materials Science and Engineering, National Tsing Hua University, Hsinchu 30013, Taiwan.
| |
Collapse
|
32
|
Nanoparticle shell structural cues drive in vitro transport properties, tissue distribution and brain accessibility in zebrafish. Biomaterials 2021; 277:121085. [PMID: 34461457 DOI: 10.1016/j.biomaterials.2021.121085] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2021] [Revised: 07/26/2021] [Accepted: 08/23/2021] [Indexed: 01/14/2023]
Abstract
Zwitterion polymers with strong antifouling properties have been suggested as the prime alternative to polyethylene glycol (PEG) for drug nanocarriers surface coating. It is believed that PEG coating shortcomings, such as immune responses and incomplete protein repellency, could be overcome by zwitterionic polymers. However, no systematic study has been conducted so far to complete a comparative appraisal of PEG and zwitterionic-coating effects on nanoparticles (NPs) stealthness, cell uptake, cell barrier translocation and biodistribution in the context of nanocarriers brain targeting. Core-shell polymeric particles with identical cores and a shell of either PEG or poly(2-methacryloyloxyethyl phosphorylcholine (PMPC) were prepared by impinging jet mixer nanoprecipitation. NPs with similar size and surface potential were systematically compared using in vitro and in vivo assays. NPs behavior differences were rationalized based on their protein-particles interactions. PMPC-coated NPs were significantly more endocytosed by mouse macrophages or brain resident macrophages compared to PEGylated NPs but exhibited the remarkable ability to cross the blood-brain barrier in in vitro models. Nanoscale flow cytometry assays showed significantly more adsorbed proteins on PMPC-coated NPs than PEG-coated NPs. In vivo, distribution in zebrafish larvae, showed a strong propensity for PMPC-coated NPs to adhere to the vascular endothelium, while PEG-coated NPs were able to circulate for a longer time and escape the bloodstream to penetrate deep into the cerebral tissue. The stark differences between these two types of particles, besides their similarities in size and surface potential, points towards the paramount role of surface chemistry in controlling NPs fate likely via the formation of distinct protein corona for each coating.
Collapse
|
33
|
Stabilization of Lipid Lamellar Bilayer Structure of Stratum Corneum Modulated by Poly (2-methacryloyloxyethyl phosphorylcholine) in Relation to Skin Hydration and Skin Protection. Tissue Eng Regen Med 2021; 18:953-962. [PMID: 34460064 DOI: 10.1007/s13770-021-00379-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2020] [Revised: 07/14/2021] [Accepted: 07/16/2021] [Indexed: 10/20/2022] Open
Abstract
BACKGROUND One crucial factor in skin tissue engineering is to understand the hydration and barrier property of skin. We investigated the skin hydration and stabilization strategy of inter-lamellar structure of stratum corneum (SC) using poly (2-methacryloyloxyethyl phosphorylcholine) (PMPC). METHODS The unique hydration and stabilization potency of PMPC on the barrier function of the SC examined using freshly excised hairless mouse skin as a model membrane and the relationship between the stabilization of the lipid lamellar bilayer (LLB) and its enhanced water holding capacity was established. RESULTS Differential scanning calorimeter based on the phase-transition temperature of lipid domain of SC demonstrated that PMPC stabilized the LLB. The ratio of the heat of lipid phase transition (△H) of SC exposed to water and PMPC for 24 h was 1.51. X-ray crystallography showed the presence of well- organized lipids in intercellular membranes exhibiting short and long periodicity of lamellar phases. The peak at 4.4 nm attributed to the long periodicity phase (LPP) was missing in water-treated SC, where, the presence of 4.2- 4.4 nm peak in PMPC treated SC indicated that PMPC stabilized LPP. Transmission electron microscopy study demonstrated that the LLB structure became more rigid and orderly in PMPC treated SC. CONCLUSION The unique ion paired structure of PMPC enhances the barrier function of the SC by stabilizing LLB structure and hydration by inducing weakly bound water. The unique hydration state and stabilization effect from extended water exposure could provide a valuable information to prepare reliable artificial skin matrix and skin tissue.
Collapse
|
34
|
Adler A, Inoue Y, Sato Y, Ishihara K, Ekdahl KN, Nilsson B, Teramura Y. Synthesis of poly(2-methacryloyloxyethyl phosphorylcholine)-conjugated lipids and their characterization and surface properties of modified liposomes for protein interactions. Biomater Sci 2021; 9:5854-5867. [PMID: 34286724 DOI: 10.1039/d1bm00570g] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Poly(ethylene glycol) (PEG) is frequently used for liposomal surface modification. However, as PEGylated liposomes are cleared rapidly from circulation upon repeated injections, substitutes of PEG are being sought. We focused on a water-soluble polymer composed of 2-methacryloyloxyethyl phosphorylcholine (MPC) units, and synthesized poly(MPC) (PMPC)-conjugated lipid (PMPC-lipid) with degrees of MPC polymerization ranging from 10 to 100 (calculated molecular weight: 3 to 30 kDa). In addition, lipids with three different alkyl chains, myristoyl, palmitoyl, and stearoyl, were applied for liposomal surface coating. We studied the interactions of PMPC-lipids with plasma albumin, human complement protein C3 and fibrinogen using a quartz crystal microbalance with energy dissipation, and found that adsorption of albumin, C3 and fibrinogen could be suppressed by coating with PMPC-lipids. In particular, the effect was more pronounced for PMPC chains with higher molecular weight. We evaluated the size, polydispersity index, surface charge, and membrane fluidity of the PMPC-lipid-modified liposomes. We found that the effect of the coating on the dispersion stability was maintained over a long period (98 days). Furthermore, we also demonstrated that the anti-PEG antibody did not interact with PMPC-lipids. Thus, our findings suggest that PMPC-lipids can be used for liposomal coating.
Collapse
Affiliation(s)
- Anna Adler
- Department of Immunology, Genetics and Pathology (IGP), Uppsala University, Dag Hammarskjölds väg 20, SE-751 85, Uppsala, Sweden.
| | | | | | | | | | | | | |
Collapse
|
35
|
Poly 2-methacryloyloxyethyl Phosphorylcholine Protects Corneal Cells and Contact Lenses from Desiccation Damage. Optom Vis Sci 2021; 98:159-169. [PMID: 33534380 DOI: 10.1097/opx.0000000000001642] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
SIGNIFICANCE Contact lens (CL) wearing may cause discomfort and eye dryness. We describe here the efficacy of a synthetic polymer in protecting both the corneal epithelial cells and the CL from desiccation damage. Artificial tears containing this polymer might be helpful to treat or prevent ocular surface damage in CL wearers. PURPOSE We aimed to investigate the protective effects of the synthetic polymer 2-methacryloyloxyethyl phosphorylcholine (poly-MPC) on corneal epithelial cells and CLs subjected to desiccation damage. METHODS The interaction of poly-MPC with the cell membrane was evaluated on human primary corneal epithelial cells (HCE-F) by the sodium dodecyl sulfate damage protection assay or the displacement of the cell-binding lectin concanavalin A (ConA). Survival in vitro of HCE-F cells and ex vivo of porcine corneas exposed to desiccating conditions after pre-treatment with poly-MPC or hyaluronic acid (HA), hypromellose (HPMC), and trehalose was evaluated by a colorimetric assay. Soft CLs were soaked overnight in a solution of poly-MPC/HPMC and then let dry in ambient air. Contact lens weight, morphology, and transparency were periodically registered until complete dryness. RESULTS Polymer 2-methacryloyloxyethyl phosphorylcholine and HPMC were retained on the HCE-F cell membrane more than trehalose or HA. Polymer 2-methacryloyloxyethyl phosphorylcholine, HA, and HPMC either alone or in association protected corneal cells from desiccation significantly better than did trehalose alone or in association with HA. Contact lens permeation by poly-MPC/HPMC preserved better their shape and transparency than did saline. CONCLUSIONS Polymer 2-methacryloyloxyethyl phosphorylcholine coats and protects corneal epithelial cells and CLs from desiccation damage more efficiently compared with trehalose and as good as other reference compounds.
Collapse
|
36
|
Chemical Structural Effects of Amphipathic and Water-soluble Phospholipid Polymers on Formulation of Solid Dispersions. J Pharm Sci 2021; 110:2966-2973. [PMID: 33831441 DOI: 10.1016/j.xphs.2021.03.025] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2020] [Revised: 03/01/2021] [Accepted: 03/23/2021] [Indexed: 11/23/2022]
Abstract
For the polymeric carriers of solid dispersions, it is important that carriers themselves dissolve quickly and maintain the supersaturated state of amorphous drugs during their dissolution period to improve bioavailability. Amphipathic 2-methacryloyloxyethyl phosphorylcholine (MPC) polymers can be dissolved in water, owing to the extremely high hydrophilicity of the MPC units, and are used as an ideal feeder for drug molecules to form aggregates in aqueous conditions. We synthesized amphipathic MPC copolymers with different hydrophobic side chains and molar ratios of MPC units, and evaluated the effect of the polymers on dissolution rate and supersaturation maintenance of solid dispersions of indomethacin. In most of the water-soluble amphipathic MPC copolymers, "spring-parachute"-like dissolution behavior was observed, where the drug initially became supersaturated followed by slow precipitation. In particular, MPC copolymers with aromatic rings in their side chains or polymers with a high percentage of hydrophobic units remained in a supersaturated state for a longer period. In contrast, urethane groups, which form hydrogen bonds with drug molecules, could also interact with water and were not conducive to maintaining supersaturation. In addition, water solubility of the polymer is important for rapid dissolution.
Collapse
|
37
|
Ishihara K, Fukazawa K, Sharma V, Liang S, Shows A, Dunbar DC, Zheng Y, Ge J, Zhang S, Hong Y, Shi X, Wu JY. Antifouling Silicone Hydrogel Contact Lenses with a Bioinspired 2-Methacryloyloxyethyl Phosphorylcholine Polymer Surface. ACS OMEGA 2021; 6:7058-7067. [PMID: 33748619 PMCID: PMC7970573 DOI: 10.1021/acsomega.0c06327] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 02/03/2021] [Indexed: 05/24/2023]
Abstract
Inspired by the cell membrane surface as well as the ocular tissue, a novel and clinically applicable antifouling silicone hydrogel contact lens material was developed. The unique chemical and biological features on the surface on a silicone hydrogel base substrate were achieved by a cross-linked polymer layer composed of 2-methacryloyloxyethyl phosphorylcholine (MPC), which was considered important for optimal on-eye performance. The effects of the polymer layer on adsorption of biomolecules, such as lipid and proteins, and adhesion of cells and bacteria were evaluated and compared with several conventional silicone hydrogel contact lens materials. The MPC polymer layer provided significant resistance to lipid deposition as visually demonstrated by the three-dimensional confocal images of whole contact lenses. Also, fibroblast cell adhesion was decreased to a 1% level compared with that on the conventional silicone hydrogel contact lenses. The movement of the cells on the surface of the MPC polymer-modified lens material was greater compared with other silicone hydrogel contact lenses indicating that lubrication of the contact lenses on ocular tissue might be improved. The superior hydrophilic nature of the MPC polymer layer provides improved surface properties compared to the underlying silicone hydrogel base substrate.
Collapse
Affiliation(s)
- Kazuhiko Ishihara
- Department
of Materials Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Kyoko Fukazawa
- Department
of Materials Engineering, School of Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan
| | - Vinay Sharma
- Alcon
Vision LLC, Fort Worth, Texas 76134, United States
| | - Shuang Liang
- Alcon
Vision LLC, Fort Worth, Texas 76134, United States
| | - Amanda Shows
- Alcon
Vision LLC, Fort Worth, Texas 76134, United States
| | | | - Yang Zheng
- Alcon
Vision LLC, Duluth, Georgia 30097, United
States
| | - Junhao Ge
- Alcon
Vision LLC, Duluth, Georgia 30097, United
States
| | - Steve Zhang
- Alcon
Vision LLC, Duluth, Georgia 30097, United
States
| | - Ye Hong
- Alcon
Vision LLC, Duluth, Georgia 30097, United
States
| | - Xinfeng Shi
- Alcon
Vision LLC, Fort Worth, Texas 76134, United States
| | | |
Collapse
|
38
|
Schönemann E, Koc J, Karthäuser JF, Özcan O, Schanzenbach D, Schardt L, Rosenhahn A, Laschewsky A. Sulfobetaine Methacrylate Polymers of Unconventional Polyzwitterion Architecture and Their Antifouling Properties. Biomacromolecules 2021; 22:1494-1508. [PMID: 33709699 DOI: 10.1021/acs.biomac.0c01705] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Combining high hydrophilicity with charge neutrality, polyzwitterions are intensely explored for their high biocompatibility and low-fouling properties. Recent reports indicated that in addition to charge neutrality, the zwitterion's segmental dipole orientation is an important factor for interacting with the environment. Accordingly, a series of polysulfobetaines with a novel architecture was designed, in which the cationic and anionic groups of the zwitterionic moiety are placed at equal distances from the backbone. They were investigated by in vitro biofouling assays, covering proteins of different charges and model marine organisms. All polyzwitterion coatings reduced the fouling effectively compared to model polymer surfaces of poly(butyl methacrylate), with a nearly equally good performance as the reference polybetaine poly(3-(N-(2-(methacryloyloxy)ethyl)-N,N-dimethylammonio)propanesulfonate). The specific fouling resistance depended on the detailed chemical structure of the polyzwitterions. Still, while clearly affecting the performance, the precise dipole orientation of the sulfobetaine group in the polyzwitterions seems overall to be only of secondary importance for their antifouling behavior.
Collapse
Affiliation(s)
- Eric Schönemann
- Department of Chemistry, Universität Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam-Golm, Germany
| | - Julian Koc
- Analytical Chemistry - Biointerfaces, Ruhr University Bochum, 44780 Bochum, Germany
| | - Jana F Karthäuser
- Analytical Chemistry - Biointerfaces, Ruhr University Bochum, 44780 Bochum, Germany
| | - Onur Özcan
- Analytical Chemistry - Biointerfaces, Ruhr University Bochum, 44780 Bochum, Germany
| | - Dirk Schanzenbach
- Department of Chemistry, Universität Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam-Golm, Germany
| | - Lisa Schardt
- Analytical Chemistry - Biointerfaces, Ruhr University Bochum, 44780 Bochum, Germany
| | - Axel Rosenhahn
- Analytical Chemistry - Biointerfaces, Ruhr University Bochum, 44780 Bochum, Germany
| | - André Laschewsky
- Department of Chemistry, Universität Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam-Golm, Germany.,Fraunhofer Institute of Applied Polymer Research IAP, Geiselbergstr. 69, 14476 Potsdam-Golm, Germany
| |
Collapse
|
39
|
Kang S, Park S, Baek I, Song Y, Kim S, Choi D, Kim J, Lee Y. Development of poly(D,L-lactic-co-glycolic acid) films coated with biomembrane-mimicking polymers for anti-adhesion activity. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 120:111780. [PMID: 33545908 DOI: 10.1016/j.msec.2020.111780] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 11/12/2020] [Accepted: 11/26/2020] [Indexed: 12/19/2022]
Abstract
A physical barrier is one of the most effective strategies to alleviate excessive postoperative adhesion (POA) between tissues at an injury site. To overcome the limitations of current polymeric film-type physical barriers, we suggest a film of poly(lactic-co-glycolic acid) (PLGA) that is non-covalently coated with poly(2-methacryloyloxyethyl phosphorylcholine (MPC)-co-n-butyl methacrylate (BMA)) (PMB). While maintaining the degradability and mechanical properties of PLGA, the PMB coating introduces strong anti-adhesive properties to the film by forming a zwitterionic MPC-based surface through the hydrophobic interactions between BMA moieties and PLGA. Compared to SurgiWrap®, the commercially available poly(lactic acid)-based anti-adhesive film against POA, the PMB-coated PLGA film is much more inhibitory against protein adsorption and fibroblast adhesion, processes that are crucial to the POA process. PMB coating also inhibits the expression of fibronectin containing extra domain A (FN-EDA), α-smooth muscle actin (α-SMA), and collagen type IV alpha 2 (COL4A2), which are marker genes and proteins involved in fibroblast activation and excessive fibrosis during POA. Such inhibitory activities are clearly observed in a 3-dimensional culture of fibroblasts within a collagen matrix, which mimics the in vivo environment of an injury site, as well as in a 2-dimensional culture. The kinetics and the stability of the PMB coating suggest potential future clinical use to coat PLGA films to create a film-type anti-adhesion barrier that overcomes the limitations of current products.
Collapse
Affiliation(s)
- Sunah Kang
- Department of Chemistry, College of Natural Sciences, Seoul National University, 1, Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Sohyun Park
- Department of Chemistry, College of Natural Sciences, Seoul National University, 1, Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Insu Baek
- SOLSION Biomedical, Inc., 25, Gasan digital 1-ro, Geumcheon-gu, Seoul 08594, Republic of Korea
| | - Youngjun Song
- Department of Chemistry, College of Natural Sciences, Seoul National University, 1, Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Sungwhan Kim
- Department of Chemistry, College of Natural Sciences, Seoul National University, 1, Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Dongkil Choi
- Department of Chemistry, College of Natural Sciences, Seoul National University, 1, Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Jungah Kim
- Department of Chemistry, College of Natural Sciences, Seoul National University, 1, Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea
| | - Yan Lee
- Department of Chemistry, College of Natural Sciences, Seoul National University, 1, Gwanak-ro, Gwanak-gu, Seoul 08826, Republic of Korea.
| |
Collapse
|
40
|
Saha P, Palanisamy AR, Santi M, Ganguly R, Mondal S, Singha NK, Pich A. Thermoresponsive zwitterionic poly(phosphobetaine) microgels: Effect of
macro‐RAFT
chain length and cross‐linker molecular weight on their antifouling properties. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5214] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Pabitra Saha
- DWI – Leibniz‐Institute for Interactive Materials e.V Aachen Germany
- Institute of Technical and Macromolecular Chemistry RWTH Aachen University Aachen Germany
| | - Anand Raj Palanisamy
- DWI – Leibniz‐Institute for Interactive Materials e.V Aachen Germany
- Rubber Technology Centre Indian Institute of Technology Kharagpur Kharagpur India
| | - Marta Santi
- DWI – Leibniz‐Institute for Interactive Materials e.V Aachen Germany
- Institute of Technical and Macromolecular Chemistry RWTH Aachen University Aachen Germany
| | - Ritabrata Ganguly
- Rubber Technology Centre Indian Institute of Technology Kharagpur Kharagpur India
| | - Somashree Mondal
- DWI – Leibniz‐Institute for Interactive Materials e.V Aachen Germany
- Department of Chemical Engineering Indian Institute of Technology Guwahati Guwahati India
| | - Nikhil K. Singha
- Rubber Technology Centre Indian Institute of Technology Kharagpur Kharagpur India
| | - Andrij Pich
- DWI – Leibniz‐Institute for Interactive Materials e.V Aachen Germany
- Institute of Technical and Macromolecular Chemistry RWTH Aachen University Aachen Germany
- Aachen Maastricht Institute for Biobased Materials (AMIBM) Maastricht University Geleen the Netherlands
| |
Collapse
|
41
|
Shi X, Cantu-Crouch D, Sharma V, Pruitt J, Yao G, Fukazawa K, Wu JY, Ishihara K. Surface characterization of a silicone hydrogel contact lens having bioinspired 2-methacryloyloxyethyl phosphorylcholine polymer layer in hydrated state. Colloids Surf B Biointerfaces 2021; 199:111539. [PMID: 33387797 DOI: 10.1016/j.colsurfb.2020.111539] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 12/14/2020] [Accepted: 12/15/2020] [Indexed: 01/08/2023]
Abstract
A silicone hydrogel contact lens material, with a unique chemical and physical structure has been designed for long-term ocular performance. Enhancement of this silicone hydrogel contact lens material was achieved through surface modification using a cross-linkable bioinspired 2-methacryloyloxyethyl phosphorylcholine (MPC) polymer, which creates a soft surface gel layer on the silicone hydrogel base material. The surface properties of this MPC polymer-modified lens were characterized under hydrated condition revealing, inter alia, its unique polymer structure, excellent hydrophilicity, lubricity, and flexibility. Analysis of the MPC polymer layer in a hydrated state was performed using a combination of a high-resolution environmental scanning electron microscopy and atomic force microscopy. Compared to the silicone hydrogel base material, this surface had a higher captive bubble contact angle, which corresponds to higher hydrophilicity of the surface. In addition, the hydrated MPC polymer layer exhibited an extremely soft surface and reduced the coefficient of friction by more than 80 %. These characteristics were attributed to the hydration state of the MPC polymer layer on the surface of the silicone hydrogel base material. Also, interaction force of protein deposition was lowered on the surface. Such superior surface properties are anticipated to contribute to excellent ocular performance.
Collapse
Affiliation(s)
- Xinfeng Shi
- Alcon Vision, LLC, Fort Worth, TX, 76134, USA
| | | | | | | | - George Yao
- Alcon Vision, LLC, Duluth, GA, 30097, USA
| | - Kyoko Fukazawa
- Department of Materials Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan
| | | | - Kazuhiko Ishihara
- Department of Materials Engineering, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 113-8656, Japan.
| |
Collapse
|
42
|
Damsongsang P, Hoven VP, Yusa SI. Core-functionalized nanoaggregates: preparation via polymerization-induced self-assembly and their applications. NEW J CHEM 2021. [DOI: 10.1039/d1nj01791h] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Core-functionalized nanoaggregates can be prepared by a combination of polymerization-induced self-assembly (PISA) and post-polymerization modification.
Collapse
Affiliation(s)
- Panittha Damsongsang
- Department of Chemistry
- Faculty of Science
- Chulalongkorn University
- Bangkok 10330
- Thailand
| | - Voravee P. Hoven
- Department of Chemistry
- Faculty of Science
- Chulalongkorn University
- Bangkok 10330
- Thailand
| | - Shin-ichi Yusa
- Department of Applied Chemistry
- Graduate School of Engineering
- University of Hyogo
- Himeji
- Japan
| |
Collapse
|
43
|
Peng YY, Cheng Q, Wang W, Wu M, Diaz-Dussan D, Kumar P, Narain R. Multi-responsive, injectable, and self-healing hydrogels based on benzoxaborole–tannic acid complexation. Polym Chem 2021. [DOI: 10.1039/d1py00692d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
A bio-inspired, multi-responsive, injectable, and self-healing hydrogel was developed via the interaction of tannic acid (TA) and benzoxaborole-based linear copolymers.
Collapse
Affiliation(s)
- Yi-Yang Peng
- Department of Chemical and Material Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Qiuli Cheng
- Chemical Engineering and Phamaceutics School, Henan University of Science and Technology, Luoyang 471023, P. R. China
| | - Wenda Wang
- Department of Chemical and Material Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Meng Wu
- Department of Chemical and Material Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Diana Diaz-Dussan
- Department of Chemical and Material Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| | - Piyush Kumar
- Department of Oncology, University of Alberta, Cross Cancer Institute, Edmonton, T6G 1Z2, Alberta, Canada
| | - Ravin Narain
- Department of Chemical and Material Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
| |
Collapse
|
44
|
Qi H, Wang Y, Yuan X, Li P, Yang L. Selective extracellular arginine deprivation by a single injection of cellular non-uptake arginine deiminase nanocapsules for sustained tumor inhibition. NANOSCALE 2020; 12:24030-24043. [PMID: 33291128 DOI: 10.1039/d0nr06823c] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The metabolic enzyme-based arginine deprivation represents a tremendous opportunity to treat argininosuccinate synthetase (ASS1)-deficient tumors. Arginine deiminase (ADI), a typical representative, has aroused great interest. To date, the functional modification of ADI, such as PEGylation, has been applied to improve its weakness significantly, reducing its immunogenicity and extending its blood circulation time. However, the advantages of ADI, such as the cellular non-uptake property, are often deprived by current modification methods. The cellular non-uptake property of ADI only renders extracellular arginine degradation that negligibly influences normal cells. However, current-functionalized ADIs can be readily phagocytized by cells, causing the imbalance of intracellular amino acids and the consequent damage to normal cells. Therefore, it is necessary to exploit a new method that can simultaneously improve the weakness of ADI and maintain its advantage of cellular non-uptake. Here, we utilized a kind of phosphorylcholine (PC)-rich nanocapsule to load ADI. These nanocapsules possessed extremely weak cellular interaction and could avoid uptake by endothelial cells (HUVEC), immune cells (RAW 264.7), and tumor cells (H22), selectively depriving extracellular arginine. Besides, these nanocapsules increased the blood half-life time of ADI from the initial 2 h to 90 h and efficiently avoided its immune or inflammatory responses. After a single injection of ADI nanocapsules into H22 tumor-bearing mice, tumors were stably suppressed for 25 d without any detectable side effects. This new strategy first realizes the selective extracellular arginine deprivation for the treatment of ASS1-deficient tumors, potentially promoting the clinical translation of metabolic enzyme-based amino acid deprivation therapy. Furthermore, the research reminds us that the functionalization of drugs can not only improve its weakness but also maintain its advantages.
Collapse
Affiliation(s)
- Hongzhao Qi
- Institute of Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao 266021, China.
| | | | | | | | | |
Collapse
|
45
|
Jumai’an E, Garcia E, Herrera-Alonso M, Bevan MA. Specific Ion Effects on Adsorbed Zwitterionic Copolymers. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01815] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Eugenie Jumai’an
- Chemical & Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States
| | - Elena Garcia
- Chemical & Biological Engineering, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Margarita Herrera-Alonso
- Chemical & Biological Engineering, Colorado State University, Fort Collins, Colorado 80523, United States
| | - Michael A. Bevan
- Chemical & Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland 21218, United States
| |
Collapse
|
46
|
Ishihara K, Suzuki K, Inoue Y, Fukazawa K. Effects of molecular architecture of photoreactive phospholipid polymer on adsorption and reaction on substrate surface under aqueous condition. JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION 2020; 32:419-437. [PMID: 33075239 DOI: 10.1080/09205063.2020.1839340] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
Water-soluble photoreactive polymers with both phosphorylcholine and benzophenone groups were synthesized for the reaction between the polymers and the substrate in aqueous medium. To control the polymer architecture, the living radical polymerization method was applied to the copolymerization of 2-methacryloyloxyethyl phosphorylcholine and benzophenone methacrylates. These polymers possess various architectures, such as linear polymers, polymers with hydrophobic terminals, and 4-armed star-like polymers, that could promote their adsorption on the substrate surfaces. Additionally, two types of benzophenone groups were examined. Due to the bulky phosphorylcholine group, tetra(ethylene oxide) group as a spacer between polymer main chain and benzophenone group was considered. These polymers could adsorb on the surface in an aqueous medium, followed by reaction on the surface via photoirradiation depending on the chemical structure of the benzophenone group. The thickness of the polymer layer depended on the polymer architecture, i.e. a polymer with a hydrophobic terminal could form a thick layer. After modification, the contact angle by air in the aqueous medium decreased, compared to that on the base substrate. This was due to the hydrophilic nature based on the phosphorylcholine groups at the surface. The amount of proteins adsorbed on the surface also decreased because of the surface modification. These findings indicated that these water-soluble photoreactive polymers could be applied for the safer and effective surface modification of substrates via conventional photoirradiation without using an organic solvent.
Collapse
Affiliation(s)
- Kazuhiko Ishihara
- Department of Materials Engineering, School of Engineering, The University of Tokyo, Tokyo, Japan.,Department of Bioengineering, School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Kohei Suzuki
- Department of Bioengineering, School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Yuuki Inoue
- Department of Materials Engineering, School of Engineering, The University of Tokyo, Tokyo, Japan
| | - Kyoko Fukazawa
- Department of Materials Engineering, School of Engineering, The University of Tokyo, Tokyo, Japan
| |
Collapse
|
47
|
Yoshie K, Yada S, Ando S, Ishihara K. Effects of inner polarity and viscosity of amphiphilic phospholipid polymer aggregates on the solubility enhancement of poorly water-soluble drugs. Colloids Surf B Biointerfaces 2020; 195:111215. [DOI: 10.1016/j.colsurfb.2020.111215] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 06/22/2020] [Accepted: 06/23/2020] [Indexed: 02/05/2023]
|
48
|
Reduction of Physical Strength and Enhancement of Anti-Protein and Anti-Lipid Adsorption Abilities of Contact Lenses by Adding 2-Methacryloyloxyethyl Phosphorylcholine. Macromol Res 2020. [DOI: 10.1007/s13233-020-8149-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
|
49
|
Beattie DL, Mykhaylyk OO, Armes SP. Enthalpic incompatibility between two steric stabilizer blocks provides control over the vesicle size distribution during polymerization-induced self-assembly in aqueous media. Chem Sci 2020; 11:10821-10834. [PMID: 33209249 PMCID: PMC7654191 DOI: 10.1039/d0sc01320j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2020] [Accepted: 06/19/2020] [Indexed: 01/05/2023] Open
Abstract
Over the past two decades, block copolymer vesicles have been widely used by many research groups to encapsulate small molecule drugs, genetic material, nanoparticles or enzymes. They have also been used to design examples of autonomous self-propelled nanoparticles. Traditionally, such vesicles are prepared via post-polymerization processing using a water-miscible co-solvent such as DMF or THF. However, such protocols are invariably conducted in dilute solution, which is a significant disadvantage. In addition, the vesicle size distribution is often quite broad, whereas aqueous dispersions of relatively small vesicles with narrow size distributions are highly desirable for potential biomedical applications. Alternatively, concentrated dispersions of block copolymer vesicles can be directly prepared via polymerization-induced self-assembly (PISA). Moreover, using a binary mixture of a relatively long and a relatively short steric stabilizer block enables the convenient PISA synthesis of relatively small vesicles with reasonably narrow size distributions in alcoholic media (C. Gonzato et al., JACS, 2014, 136, 11100-11106). Unfortunately, this approach has not yet been demonstrated for aqueous media, which would be much more attractive for commercial applications. Herein we show that this important technical objective can be achieved by judicious use of two chemically distinct, enthalpically incompatible steric stabilizer blocks, which ensures the desired microphase separation across the vesicle membrane. This leads to the formation of well-defined vesicles of around 200 nm diameter (size polydispersity = 13-16%) in aqueous media at 10% w/w solids as judged by transmission electron microscopy, dynamic light scattering and small-angle X-ray scattering.
Collapse
Affiliation(s)
- Deborah L Beattie
- Department of Chemistry , University of Sheffield , Dainton Building, Brook Hill , Sheffield , South Yorkshire, S3 7HF , UK . ;
| | - Oleksandr O Mykhaylyk
- Department of Chemistry , University of Sheffield , Dainton Building, Brook Hill , Sheffield , South Yorkshire, S3 7HF , UK . ;
| | - Steven P Armes
- Department of Chemistry , University of Sheffield , Dainton Building, Brook Hill , Sheffield , South Yorkshire, S3 7HF , UK . ;
| |
Collapse
|
50
|
Kreuzer LP, Widmann T, Aldosari N, Bießmann L, Mangiapia G, Hildebrand V, Laschewsky A, Papadakis CM, Müller-Buschbaum P. Cyclic Water Storage Behavior of Doubly Thermoresponsive Poly(sulfobetaine)-Based Diblock Copolymer Thin Films. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01335] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lucas P. Kreuzer
- Lehrstuhl für Funktionelle Materialien, Physik Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | - Tobias Widmann
- Lehrstuhl für Funktionelle Materialien, Physik Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | - Nawarah Aldosari
- Lehrstuhl für Funktionelle Materialien, Physik Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | - Lorenz Bießmann
- Lehrstuhl für Funktionelle Materialien, Physik Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | - Gaetano Mangiapia
- Helmholtz-Zentrum Geesthacht at Heinz Maier-Leibnitz Zentrum, Lichtenbergstr. 1, 85747 Garching, Germany
| | - Viet Hildebrand
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam-Golm, Germany
| | - André Laschewsky
- Institut für Chemie, Universität Potsdam, Karl-Liebknecht-Str. 24-25, 14476 Potsdam-Golm, Germany
- Fraunhofer Institut für Angewandte Polymerforschung, Geiselbergstr. 69, 14476 Potsdam-Golm, Germany
| | - Christine M. Papadakis
- Fachgebiet Physik weicher Materie, Physik Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
| | - Peter Müller-Buschbaum
- Lehrstuhl für Funktionelle Materialien, Physik Department, Technische Universität München, James-Franck-Str. 1, 85748 Garching, Germany
- Heinz Maier-Leibnitz Zentrum (MLZ), Technische Universität München, Lichtenbergstr. 1, 85748 Garching, Germany
| |
Collapse
|