1
|
Shindler S, Yang R. Hydrolysis of Poly(fluoroacrylate) Thin Films Synthesized from the Vapor Phase. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:1215-1226. [PMID: 36621891 DOI: 10.1021/acs.langmuir.2c03005] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/17/2023]
Abstract
The post-synthesis surface reaction of vapor-deposited polymer thin films is a promising technique in engineering heterogeneous surface chemistry. Because the existing research has neglected marginally reactive precursor films in preference of their highly reactive counterparts, our knowledge of kinetics and loss of film integrity during the reaction are limited. To address these limitations, we characterize hydrolysis of two fluoroacrylates, poly(1H,1H,2H,2H-perfluorooctyl acrylate) (pPFOA) and poly(2,2,3,4,4,4-hexafluorobutyl acrylate) (pHFBA), with sodium hydroxide using X-ray photoelectron spectroscopy. Without crosslinking with di(ethylene glycol)divinyl ether (DEGDVE) and grafting with trichlorovinyl silane, the films degrade rapidly during hydrolysis. An SN2 mechanism describes hydrolysis well, with rate constants of 0.0029 ± 0.0004 and 0.011 ± 0.001 L mol-1s-1 at 30 °C for p(PFOA-co-DEGDVE) and p(HFBA-co-DEGDVE), respectively. Our detailed study of hydrolysis kinetics of marginally reactive fluoroacrylates demonstrates the full capability and limitations of the post-synthesis reaction. Importantly, copolymers are characterized using a density correction new to polymer chemical vapor deposition.
Collapse
Affiliation(s)
- Simon Shindler
- Robert Frederick Smith School of Chemical & Biomolecular Engineering, Cornell University, 120 Olin Hall, Ithaca, New York14853, United States
| | - Rong Yang
- Robert Frederick Smith School of Chemical & Biomolecular Engineering, Cornell University, 120 Olin Hall, Ithaca, New York14853, United States
| |
Collapse
|
2
|
Vapor Sublimation and Deposition to Fabricate a Porous Methyl Propiolate-Functionalized Poly- p-xylylene Material for Copper-Free Click Chemistry. Polymers (Basel) 2021; 13:polym13050786. [PMID: 33806497 PMCID: PMC7961469 DOI: 10.3390/polym13050786] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 02/27/2021] [Accepted: 02/28/2021] [Indexed: 11/26/2022] Open
Abstract
Conventional porous materials are mostly synthesized in solution-based methods involving solvents and initiators, and the functionalization of these porous materials usually requires additional and complex steps. In the current study, a methyl propiolate-functionalized porous poly-p-xylylene material was fabricated based on a unique vapor sublimation and deposition process. The process used a water solution and ice as the template with a customizable shape and dimensions, and the conventional chemical vapor deposition (CVD) polymerization of poly-p-xylylene on such an ice template formed a three-dimensional, porous poly-p-xylylene material with interconnected porous structures. More importantly, the functionality of methyl propiolate was well preserved by using methyl propiolate-substituted [2,2]-paracyclophane during the vapor deposition polymerization process and was installed in one step on the final porous poly-p-xylylene products. This functionality exhibited an intact structure and reactivity during the proposed vapor sublimation and deposition process and was proven to have no decomposition or side products after further characterization and conjugation experiments. The electron-withdrawing methyl propiolate group readily provided efficient alkynes as click azide-terminated molecules under copper-free and mild conditions at room temperature and in environmentally friendly solvents, such as water. The resulting methyl propiolate-functionalized porous poly-p-xylylene exhibited interface properties with clickable specific covalent attachment toward azide-terminated target molecules, which are widely available for drugs and biomolecules. The fabricated functional porous materials represent an advanced material featuring porous structures, a straightforward synthetic approach, and precise and controlled interface click chemistry, rendering long-term stability and efficacy to conjugate target functionalities that are expected to attract a variety of new applications.
Collapse
|
3
|
Hsu YT, Wu CY, Guan ZY, Sun HY, Mei C, Chen WC, Cheng NC, Yu J, Chen HY. Characterization of Mechanical Stability and Immunological Compatibility for Functionalized Modification Interfaces. Sci Rep 2019; 9:7644. [PMID: 31113975 PMCID: PMC6529445 DOI: 10.1038/s41598-019-43999-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 05/07/2019] [Indexed: 11/17/2022] Open
Abstract
Surface modification layers are performed on the surfaces of biomaterials and have exhibited promise for decoupling original surface properties from bulk materials and enabling customized and advanced functional properties. The physical stability and the biological compatibility of these modified layers are equally important to ensure minimized delamination, debris, leaching of molecules, and other problems that are related to the failure of the modification layers and thus can provide a long-term success for the uses of these modified layers. A proven surface modification tool of the functionalized poly-para-xylylene (PPX) system was used as an example, and in addition to the demonstration of their chemical conjugation capabilities and the functional properties that have been well-documented, in the present report, we additionally devised the characterization protocols to examine stability properties, including thermostability and adhesive strength, as well as the biocompatibility, including cell viability and the immunological responses, for the modified PPX layers. The results suggested a durable coating stability for PPXs and firmly attached biomolecules under these stability and compatibility tests. The durable and stable modification layers accompanied by the native properties of the PPXs showed high cell viability against fibroblast cells and macrophages (MΦs), and the resulting immunological activities created by the MΦs exhibited excellent compatibility with non-activated immunological responses and no indication of inflammation.
Collapse
Affiliation(s)
- Yao-Tsung Hsu
- Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan
| | - Chih-Yu Wu
- Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan.
| | - Zhen-Yu Guan
- Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan
| | - Ho-Yi Sun
- Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan
| | - Chieh Mei
- Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan
| | - Wen-Chien Chen
- Department of Orthopedic Surgery, Chang Gung Memorial Hospital, College of Medicine Chang Gung University, Taoyuan, 333, Taiwan
| | - Nai-Chen Cheng
- Department of Surgery, National Taiwan University Hospital, Taipei, 10018, Taiwan
| | - Jiashing Yu
- Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan.
| | - Hsien-Yeh Chen
- Department of Chemical Engineering, National Taiwan University, Taipei, 10617, Taiwan.
| |
Collapse
|
4
|
Chen ST, Wu CY, Chen HY. Enhanced Growth Activities of Stem Cell Spheroids Based on a Durable and Chemically Defined Surface Modification Coating. ACS APPLIED MATERIALS & INTERFACES 2018; 10:31882-31891. [PMID: 30168707 DOI: 10.1021/acsami.8b09103] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Surface modification layers are needed for the precise definition of surface chemistries and are equally important for durable and stable adhesive properties to ensure long-term stability and effective performance for biotechnological applications. This study demonstrates a robust modification layer that is synthesized based on chemical vapor deposition copolymerization, and the resultant coating layer is composed of the side-by-side presentation of N-hydroxysuccinimide ester and maleimide functionalities with a controlled ratio to define the immobilization accessibility of chitosan and growth factor protein (FGF-2) molecules on the substrate surface for enhancing cellular activities of stem cells. Characterizations of the copolymer modification layer showed excellent durability, including adhesive strength and thermal stability, and the layer is free of concerns for delamination and/or unacceptable deformation/debris formation that can cause potential toxicity to the surrounding biological environment. Modifications using the copolymer layer on the cell culture surface have demonstrated synergistic activity by chitosan to support the formation of spheroids and by FGF-2 to enhance the proliferation of human adipose-derived stem cells (ADSCs) within the spheroids while increasing the spheroid size and cell numbers. Healthy and flourishing growth activities were discovered for ADSCs on the modified culture surfaces, and the results are useful for potential and related stem cell research and the interfaces of biomaterials.
Collapse
Affiliation(s)
- Shih-Ting Chen
- Department of Chemical Engineering , National Taiwan University , Taipei 10617 , Taiwan
| | - Chih-Yu Wu
- Department of Chemical Engineering , National Taiwan University , Taipei 10617 , Taiwan
| | - Hsien-Yeh Chen
- Department of Chemical Engineering , National Taiwan University , Taipei 10617 , Taiwan
| |
Collapse
|
5
|
Feng W, Ueda E, Levkin PA. Droplet Microarrays: From Surface Patterning to High-Throughput Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2018; 30:e1706111. [PMID: 29572971 DOI: 10.1002/adma.201706111] [Citation(s) in RCA: 107] [Impact Index Per Article: 17.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Revised: 11/29/2017] [Indexed: 05/09/2023]
Abstract
High-throughput screening of live cells and chemical reactions in isolated droplets is an important and growing method in areas ranging from studies of gene functions and the search for new drug candidates, to performing combinatorial chemical reactions. Compared with microfluidics and well plates, the facile fabrication, high density, and open structure endow droplet microarrays on planar surfaces with great potential in the development of next-generation miniaturized platforms for high-throughput applications. Surfaces with special wettability have served as substrates to generate and/or address droplets microarrays. Here, the formation of droplet microarrays with designed geometry on chemically prepatterned surfaces is briefly described and some of the newer and emerging applications of these microarrays that are currently being explored are highlighted. Next, some of the available technologies used to add (bio-)chemical libraries to each droplet in parallel are introduced. Current challenges and future prospects that would benefit from using such droplet microarrays are also discussed.
Collapse
Affiliation(s)
- Wenqian Feng
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology, Hermann-von-Helmholtz Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Erica Ueda
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology, Hermann-von-Helmholtz Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
| | - Pavel A Levkin
- Institute of Toxicology and Genetics, Karlsruhe Institute of Technology, Hermann-von-Helmholtz Platz 1, 76344, Eggenstein-Leopoldshafen, Germany
- Institute of Organic Chemistry, Karlsruhe Institute of Technology, 76131, Karlsruhe, Germany
| |
Collapse
|
6
|
Lenz S, Horx P, Geyer A. The stereodynamics of macrocyclic succinimide-thioethers. J Pept Sci 2018; 24:e3075. [PMID: 29582500 DOI: 10.1002/psc.3075] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2017] [Revised: 02/20/2018] [Accepted: 02/21/2018] [Indexed: 12/23/2022]
Abstract
Maleimide-thiol coupling is a popular bioconjugation strategy, but little is known about the stereoselectivity and the stereodynamics of the succinimide thioether formed in a biopolymer environment. We used thiol 1,4-addition for the macrocyclisation of 5 designed pentapeptides with the ringsize of hexapeptides because they incorporate the succinimide thioether (4-8). Both succinimide diastereomers are observed in the constrained macrocyclic rings in each case. In spite of the low diastereoselectivity of the macrocyclisation reaction, there is a significant influence of the amino acid environment on the epimerization rate of the succinimide. Its half life can be as short as several hours at room temperature when Gly is the amino acid following the succinimide (peptide 8). On the contrary, no epimerization is detectable even after several weeks in the case of d-Phe C-terminal to the succinimide in peptide 4. Already the small selection of examples shows how big the differences in epimerization rates can be and that the local environment has a significant influence. The variation of amino acids in the vicinity of the ligation site points the way towards the synthesis of bioconjugates which are obtained as stable and separable diastereomers.
Collapse
Affiliation(s)
- Stefan Lenz
- Institute of Chemistry, Philipps-University Marburg, Hans-Meerwein-Straße, 35032, Marburg, Germany
| | - Philip Horx
- Institute of Chemistry, Philipps-University Marburg, Hans-Meerwein-Straße, 35032, Marburg, Germany
| | - Armin Geyer
- Institute of Chemistry, Philipps-University Marburg, Hans-Meerwein-Straße, 35032, Marburg, Germany
| |
Collapse
|
7
|
Chen PR, Wang TC, Chen ST, Chen HY, Tsai WB. Development of Antifouling Hyperbranched Polyglycerol Layers on Hydroxyl Poly-p-xylylene Coatings. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:14657-14662. [PMID: 29191017 DOI: 10.1021/acs.langmuir.7b02826] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Antifouling surfaces that are resistant to protein adsorption and cell adhesion are desirable for many biomedical devices, such as diagnostic devices, biosensors, and implants. In this study, we developed an antifouling hyperbranched polyglycerol (hPG) surface on hydroxyl poly-p-xylylene (PPX-OH). PPX-OH was deposited via chemical vapor deposition (CVD), and an hPG film was then developed via the ring-opening reaction of glycidol. The hPG film greatly reduced the adhesion of L929 cells and platelets as well as protein adsorption. The addition of alkenyl groups in the hPG layer allows the conjugation of biomolecules, such as peptides and biotin, and elicits specific biological interactions. Since the CVD deposition of PPX-OH could be applied to most types of materials, our approach makes it possible to decorate an antifouling hPG film on most types of materials. Our method could be applied to biosensors, diagnostics, and biomedical devices in the future.
Collapse
Affiliation(s)
- Pei-Ru Chen
- Department of Chemical Engineering, National Taiwan University , No. 1, Sec. 4, Roosevelt Rd., Taipei 106, Taiwan
| | - Ting-Ching Wang
- Department of Chemical Engineering, National Taiwan University , No. 1, Sec. 4, Roosevelt Rd., Taipei 106, Taiwan
| | - Shih-Ting Chen
- Department of Chemical Engineering, National Taiwan University , No. 1, Sec. 4, Roosevelt Rd., Taipei 106, Taiwan
| | - Hsien-Yeh Chen
- Department of Chemical Engineering, National Taiwan University , No. 1, Sec. 4, Roosevelt Rd., Taipei 106, Taiwan
| | - Wei-Bor Tsai
- Department of Chemical Engineering, National Taiwan University , No. 1, Sec. 4, Roosevelt Rd., Taipei 106, Taiwan
| |
Collapse
|
8
|
Chang CW, Guan ZY, Kan MY, Lee LW, Chen HY, Kang DY. Vapor-phase synthesis of poly( p -xylylene) membranes for gas separations. J Memb Sci 2017. [DOI: 10.1016/j.memsci.2017.05.058] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
9
|
Tsai YT, Wu CY, Guan ZY, Sun HY, Cheng NC, Yeh SY, Chen HY. Topologically Controlled Cell Differentiation Based on Vapor-Deposited Polymer Coatings. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2017; 33:8943-8949. [PMID: 28825482 DOI: 10.1021/acs.langmuir.7b01984] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In addition to the widely adopted method of controlling cell attachment for cell patterning, pattern formation via cell proliferation and differentiation is demonstrated using precisely defined interface chemistry and spatial topology. The interface platform is created using a maleimide-functionalized parylene coating (maleimide-PPX) that provides two routes for controlled conjugation accessibility, including the maleimide-thiol coupling reaction and the thiol-ene click reaction, with a high reaction specificity under mild conditions. The coating technology is a prime tool for the immobilization of sensitive molecules, such as growth factor proteins. Conjugation of fibroblast growth factor 2 (FGF-2) and bone morphogenetic protein (BMP-2) was performed on the coating surface by elegantly manipulating the reaction routes, and confining the conjugation reaction to selected areas was accomplished using microcontact printing (μCP) and/or UV irradiation photopatterning. The modified interface provides chemically and topologically defined signals that are recognized by cultured murine preosteoblast cells for proliferation (by FGF-2) and osteogenesis (by BMP-2) activities in specific locations. The reported technique additionally enabled synergistic pattern formation for both osteogenesis and proliferation activities on the same interface, which is difficult to perform using conventional cell attachment patterns. Because of the versatility of the coating, which can be applied to a wide range of materials and on curved and complex devices, the proposed technology is extendable to other prospective biomaterial designs and material interface modifications.
Collapse
Affiliation(s)
- Ya-Ting Tsai
- Department of Chemical Engineering, National Taiwan University , Taipei, 10617 Taiwan
| | - Chih-Yu Wu
- Department of Chemical Engineering, National Taiwan University , Taipei, 10617 Taiwan
| | - Zhen-Yu Guan
- Department of Chemical Engineering, National Taiwan University , Taipei, 10617 Taiwan
| | - Ho-Yi Sun
- Department of Chemical Engineering, National Taiwan University , Taipei, 10617 Taiwan
| | - Nai-Chen Cheng
- Department of Surgery, National Taiwan University Hospital , Taipei, 10018 Taiwan
| | - Shu-Yun Yeh
- Department of Chemical Engineering, National Taiwan University , Taipei, 10617 Taiwan
| | - Hsien-Yeh Chen
- Department of Chemical Engineering, National Taiwan University , Taipei, 10617 Taiwan
| |
Collapse
|
10
|
Supercritical carbon dioxide versus toluene as reaction media in silica functionalisation: Synthesis and characterisation of bonded aminopropyl silica intermediate. J Chromatogr A 2017; 1501:18-25. [DOI: 10.1016/j.chroma.2017.04.030] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 03/29/2017] [Accepted: 04/12/2017] [Indexed: 11/24/2022]
|
11
|
Gunnoo SB, Madder A. Chemical Protein Modification through Cysteine. Chembiochem 2016; 17:529-53. [DOI: 10.1002/cbic.201500667] [Citation(s) in RCA: 242] [Impact Index Per Article: 30.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Indexed: 12/15/2022]
Affiliation(s)
- Smita B. Gunnoo
- Organic & Biomimetic Chemistry Research Group; Department of Organic and Macromolecular Chemistry; Ghent University; Krijgslaan 281 9000 Gent Belgium
| | - Annemieke Madder
- Organic & Biomimetic Chemistry Research Group; Department of Organic and Macromolecular Chemistry; Ghent University; Krijgslaan 281 9000 Gent Belgium
| |
Collapse
|
12
|
Fabrication of multipotent poly-para-xylylene particles in controlled nanoscopic dimensions. Colloids Surf B Biointerfaces 2016; 139:259-68. [DOI: 10.1016/j.colsurfb.2015.12.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2015] [Revised: 12/06/2015] [Accepted: 12/14/2015] [Indexed: 12/15/2022]
|
13
|
Sun TP, Tai CH, Wu JT, Wu CY, Liang WC, Chen HY. Multifaceted and route-controlled “click” reactions based on vapor-deposited coatings. Biomater Sci 2016; 4:265-71. [DOI: 10.1039/c5bm00417a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Multifaceted and route-controlled click reactions are realized using functionalized poly-para-xylylene coatings, and the concurrent display of orthogonal interface properties is demonstrated.
Collapse
Affiliation(s)
- Ting-Pi Sun
- Department of Chemical Engineering
- National Taiwan University
- Taipei 10617
- Taiwan
| | - Ching-Heng Tai
- Department of Chemical Engineering
- National Taiwan University
- Taipei 10617
- Taiwan
| | - Jyun-Ting Wu
- Department of Chemical Engineering
- National Taiwan University
- Taipei 10617
- Taiwan
| | - Chih-Yu Wu
- Department of Chemical Engineering
- National Taiwan University
- Taipei 10617
- Taiwan
| | - Wei-Chieh Liang
- Department of Chemical Engineering
- National Taiwan University
- Taipei 10617
- Taiwan
| | - Hsien-Yeh Chen
- Department of Chemical Engineering
- National Taiwan University
- Taipei 10617
- Taiwan
| |
Collapse
|
14
|
Abstract
The cellular microenvironment is extremely complex, and a plethora of materials and methods have been employed to mimic its properties in vitro. In particular, scientists and engineers have taken an interdisciplinary approach in their creation of synthetic biointerfaces that replicate chemical and physical aspects of the cellular microenvironment. Here the focus is on the use of synthetic materials or a combination of synthetic and biological ligands to recapitulate the defined surface chemistries, microstructure, and function of the cellular microenvironment for a myriad of biomedical applications. Specifically, strategies for altering the surface of these environments using self-assembled monolayers, polymer coatings, and their combination with patterned biological ligands are explored. Furthermore, methods for augmenting an important physical property of the cellular microenvironment, topography, are highlighted, and the advantages and disadvantages of these approaches are discussed. Finally, the progress of materials for prolonged stem cell culture, a key component in the translation of stem cell therapeutics for clinical use, is featured.
Collapse
Affiliation(s)
- A.M. Ross
- Institute of Functional Interfaces, Karlsruhe Institute of Technology, Eggenstein-Leopoldshafen 76344, Germany
| | - J. Lahann
- Institute of Functional Interfaces, Karlsruhe Institute of Technology, Eggenstein-Leopoldshafen 76344, Germany
- Biointerfaces Institute,
- Department of Chemical Engineering,
- Department of Materials Science and Engineering, and
- Department of Biomedical Engineering, University of Michigan, Ann Arbor, Michigan 48109
| |
Collapse
|
15
|
Ross A, Durmaz H, Cheng K, Deng X, Liu Y, Oh J, Chen Z, Lahann J. Selective and Reversible Binding of Thiol-Functionalized Biomolecules on Polymers Prepared via Chemical Vapor Deposition Polymerization. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2015; 31:5123-5129. [PMID: 25869214 DOI: 10.1021/acs.langmuir.5b00654] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
We use chemical vapor deposition polymerization to prepare a novel dibromomaleimide-functionalized polymer for selective and reversible binding of thiol-containing biomolecules on a broad range of substrates. We report the synthesis and CVD polymerization of 4-(3,4-dibromomaleimide)[2.2]paracyclophane to yield nanometer thick polymer coatings. Fourier transformed infrared spectroscopy and X-ray photoelectron spectroscopy confirmed the chemical composition of the polymer coating. The reactivity of the polymer coating toward thiol-functionalized molecules was confirmed using fluorescent ligands. As a proof of concept, the binding and subsequent release of cysteine-modified peptides from the polymer coating were also demonstrated via sum frequency generation spectroscopy. This reactive polymer coating provides a flexible surface modification approach to selectively and reversibly bind biomolecules on a broad range of materials, which could open up new opportunities in many biomedical sensing and diagnostic applications where specific binding and release of target analytes are desired.
Collapse
Affiliation(s)
- Aftin Ross
- †Institute of Functional Interfaces, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Hakan Durmaz
- ‡Department of Chemistry, Istanbul Technical University, Maslak, 34469 Istanbul, Turkey
| | | | | | | | | | | | - Joerg Lahann
- †Institute of Functional Interfaces, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| |
Collapse
|
16
|
Liang Y, Deng X, Senkevich JJ, Ding H, Lahann J. Thermal and environmental stability of poly(4-ethynyl-p-xylylene-co-p-xylylene) thin films. CHINESE CHEM LETT 2015. [DOI: 10.1016/j.cclet.2015.01.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
|
17
|
Chen YC, Sun TP, Su CT, Wu JT, Lin CY, Yu J, Huang CW, Chen CJ, Chen HY. Sustained immobilization of growth factor proteins based on functionalized parylenes. ACS APPLIED MATERIALS & INTERFACES 2014; 6:21906-21910. [PMID: 25434778 DOI: 10.1021/am5071865] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Protein molecules immobilized on biomaterial surfaces are performed based on oriented conjugation or replaced mimicking peptides. The sustainable immobilization of growth factor proteins using functionalized parylene coatings is demonstrated in this study. Site-specific and nonspecific immobilization approaches are realized to conjugate bone morphogenetic protein (BMP-2). The binding affinities and conformational changes of BMP-2 are confirmed by QCM and SPR characterizations. Osteoinduction of stem cells is examined by ALP activity on the BMP-2 modified surfaces. Finally, immobilizations and equally sustained biological functions of vascular endothelial growth factor (VEGF) and a mimicking peptide of KLTWQELYQLKYKG (QK) are also examined and confirmed.
Collapse
Affiliation(s)
- Yung-Chih Chen
- Department of Chemical Engineering, National Taiwan University , Taipei 10617, Taiwan
| | | | | | | | | | | | | | | | | |
Collapse
|
18
|
Chien HW, Keng MC, Wang MJ, Chen HY, Huang ST, Tsai WB. Conjugation of monocarboxybetaine molecules on amino-poly-p-xylylene films to reduce protein adsorption and cell adhesion. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2014; 30:14257-14262. [PMID: 25377994 DOI: 10.1021/la502813n] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
A surface that resists protein adsorption and cell adhesion is highly desirable for many biomedical applications such as blood-contact devices and biosensors. In this study, we fabricated a carboxybetaine-containing surface and evaluated its antifouling efficacy. First, an amine-containing substrate was created by chemical vapor deposition of 4-aminomethyl-p-xylylene-co-p-xylylene (Amino-PPX). Aldehyde-ended carboxybetaine molecules were synthesized and conjugated onto Amino-PPX. The carboxybetaine-PPX surface greatly reduced protein adsorption and cell adhesion. The attachment of L929 cells on the carboxybetaine-PPX surface was reduced by 87% compared to the cell adhesion on Amino-PPX. Furthermore, RGD peptides could be conjugated on carboxybetaine-PPX to mediate specific cell adhesion. In conclusion, we demonstrate that a surface decoration with monocarboxybetaine molecules is useful for antifouling applications.
Collapse
Affiliation(s)
- Hsiu-Wen Chien
- Department of Chemical Engineering, National Taiwan University , No. 1, Sec. 4,Roosevelt, Rd., Taipei 106, Taiwan
| | | | | | | | | | | |
Collapse
|
19
|
Yang YJ, Tsai MY, Liang WC, Chen HY, Hsu CC. Ultra-low-cost and flexible paper-based microplasma generation devices for maskless patterning of poly(ethylene oxide)-like films. ACS APPLIED MATERIALS & INTERFACES 2014; 6:12550-12555. [PMID: 25026477 DOI: 10.1021/am502468q] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
This work presents the use of an ultra-low-cost and flexible paper-based microplasma array to perform maskless patterning of poly(ethylene oxide)-like (PEO-like) thin films with a feature size down to submillimeter scale. In this process, the liquid precursor was directly applied to the paper substrate, gradually vaporized, and dissociated in the microplasma cavity, which leads to plasma polymerization. The FTIR and XPS spectra of the deposited film confirm the PEO-like structures. The protein adsorption test using the absorption of fluorescence-labeled fibrinogen conjugates on the treated surface shows the deposited films possessed the antifouling property with decent pattern transfer fidelity defined by the geometry of the microplasma array.
Collapse
Affiliation(s)
- Yao-Jhen Yang
- Department of Chemical Engineering, National Taiwan University , Number 1, Section 4, Roosevelt Road, Taipei, Taiwan
| | | | | | | | | |
Collapse
|
20
|
Deng X, Lahann J. Orthogonal surface functionalization through bioactive vapor-based polymer coatings. J Appl Polym Sci 2014. [DOI: 10.1002/app.40315] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Xiaopei Deng
- Biointerfaces Institute, Department of Chemical Engineering; University of Michigan; Ann Arbor Michigan 48109
| | - Joerg Lahann
- Biointerfaces Institute, Department of Chemical Engineering; University of Michigan; Ann Arbor Michigan 48109
- Institute for Functional Interfaces, Karlsruhe Institute of Technology; 76344 Eggenstein-Leopoldshafen Germany
| |
Collapse
|
21
|
Gołda-Cępa M, Aminlashgari N, Hakkarainen M, Engvall K, Kotarba A. LDI-MS examination of oxygen plasma modified polymer for designing tailored implant biointerfaces. RSC Adv 2014. [DOI: 10.1039/c4ra02656j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A versatile parylene C coating for biomaterials was fabricated by the mild oxygen plasma treatment and examined by the use of LDI-MS..
Collapse
Affiliation(s)
- M. Gołda-Cępa
- Faculty of Chemistry
- Jagiellonian University
- 30-060 Krakow, Poland
| | - N. Aminlashgari
- Department of Fibre and Polymer Technology
- KTH Royal Institute of Technology
- SE-100 44 Stockholm, Sweden
| | - M. Hakkarainen
- Department of Fibre and Polymer Technology
- KTH Royal Institute of Technology
- SE-100 44 Stockholm, Sweden
| | - K. Engvall
- Department of Chemical Engineering and Technology
- KTH Royal Institute of Technology
- SE-100 44 Stockholm, Sweden
| | - A. Kotarba
- Faculty of Chemistry
- Jagiellonian University
- 30-060 Krakow, Poland
| |
Collapse
|
22
|
Peng F, Liu Y, Li X, Sun L, Zhao D, Wang Q, Ma G, Su Z. PEGylation of G-CSF in organic solvent markedly increase the efficacy and reactivity through protein unfolding, hydrolysis inhibition and solvent effect. J Biotechnol 2014; 170:42-9. [DOI: 10.1016/j.jbiotec.2013.10.037] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2013] [Revised: 10/16/2013] [Accepted: 10/31/2013] [Indexed: 01/08/2023]
|
23
|
Tang W, Becker ML. “Click” reactions: a versatile toolbox for the synthesis of peptide-conjugates. Chem Soc Rev 2014; 43:7013-39. [DOI: 10.1039/c4cs00139g] [Citation(s) in RCA: 271] [Impact Index Per Article: 27.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Peptides that comprise the functional subunits of proteins have been conjugated to versatile materials (biomolecules, polymers, surfaces and nanoparticles) in an effort to modulate cell responses, specific binding affinity and/or self-assembly behavior.
Collapse
Affiliation(s)
- Wen Tang
- Department of Polymer Science
- The University of Akron
- Akron, USA
| | - Matthew L. Becker
- Department of Polymer Science
- The University of Akron
- Akron, USA
- Department of Biomedical Engineering
- The University of Akron
| |
Collapse
|
24
|
Chen HY, Lin TJ, Tsai MY, Su CT, Yuan RH, Hsieh CC, Yang YJ, Hsu CC, Hsiao HM, Hsu YC. Vapor-based tri-functional coatings. Chem Commun (Camb) 2013; 49:4531-3. [PMID: 23575991 DOI: 10.1039/c3cc41491d] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The tri-functional coating synthesized via CVD copolymerization is comprised of distinguished anchoring sites of acetylene, maleimide, and ketone that can synergically undergo specific conjugation reactions to render surfaces with distinct biological functions, simultaneously. In addition, these tri-functional coatings can be fabricated in a micro-structured fashion on non-conventional surfaces.
Collapse
Affiliation(s)
- Hsien-Yeh Chen
- Department of Chemical Engineering, National Taiwan University, Taipei 10617, Taiwan.
| | | | | | | | | | | | | | | | | | | |
Collapse
|