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Ma J, Majmudar A, Tian B. Bridging the Gap-Thermofluidic Designs for Precision Bioelectronics. Adv Healthc Mater 2023:e2302431. [PMID: 37975642 DOI: 10.1002/adhm.202302431] [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: 07/28/2023] [Revised: 10/22/2023] [Indexed: 11/19/2023]
Abstract
Bioelectronics, the merging of biology and electronics, can monitor and modulate biological behaviors across length and time scales with unprecedented capability. Current bioelectronics research largely focuses on devices' mechanical properties and electronic designs. However, the thermofluidic control is often overlooked, which is noteworthy given the discipline's importance in almost all bioelectronics processes. It is believed that integrating thermofluidic designs into bioelectronics is essential to align device precision with the complexity of biofluids and biological structures. This perspective serves as a mini roadmap for researchers in both fields to introduce key principles, applications, and challenges in both bioelectronics and thermofluids domains. Important interdisciplinary opportunities for the development of future healthcare devices and precise bioelectronics will also be discussed.
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Affiliation(s)
- Jingcheng Ma
- The James Franck Institute, University of Chicago, Chicago, IL, 60637, USA
| | - Aman Majmudar
- The College, University of Chicago, Chicago, IL, 60637, USA
| | - Bozhi Tian
- The James Franck Institute, University of Chicago, Chicago, IL, 60637, USA
- Department of Chemistry, University of Chicago, Chicago, IL, 60637, USA
- The Institute for Biophysical Dynamics, University of Chicago, Chicago, IL, 60637, USA
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2
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Parbat D, Jana N, Dhar M, Manna U. Reactive Multilayer Coating As Versatile Nanoarchitectonics for Customizing Various Bioinspired Liquid Wettabilities. ACS APPLIED MATERIALS & INTERFACES 2023; 15:25232-25247. [PMID: 35730600 DOI: 10.1021/acsami.2c04759] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
In last few decades, multilayer coatings have achieved enormous attention owing to their unique ability to tune thickness, topography, and chemical composition for developing various functional materials. Such multilayer coatings were mostly and conventionally derived by following a simple layer-by-layer (LbL) deposition process through the strategic use of electrostatic interactions, hydrogen bonding, host-guest interactions, covalent bonding, etc. In the conventional design of multilayer coatings, the chemical composition and morphology of coatings are modulated during the process of multilayer constructions. In such an approach, the postmodulations of the porous multilayers with different and desired chemistries are challenging to achieve due to the lack of availability of readily and selectively reactive moieties. Recently, the design of readily and selectively reactive multilayer coatings (RMLCs) provided a facile basis for postmodulating the prepared coating with various desired chemistries. In fact, by taking advantage of the inherent ability of co-optimizing the topography and various chemistries in porous RMLCs, different durable bioinspired liquid wettabilities (i.e., superhydrophobicity, underwater superoleophobicity, underwater superoleophilicity, slippery property, etc.) were successfully derived. Such interfaces have enormous potential in various prospective applications. In this review, we intend to give an overview of the evolution of LbL multilayer coatings and their synthetic strategies and discuss the key advantages of porous RMLCs in terms of achieving and controlling wettability properties. Recent attempts toward various applications of such multilayer coatings that are strategically embedded with different desired liquid wettabilities will be emphasized.
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Affiliation(s)
- Dibyangana Parbat
- Bio-Inspired Polymeric Materials Lab, Department of Chemistry, Indian Institute of Technology─Guwahati, Kamrup, Assam 781039, India
| | - Nirban Jana
- Bio-Inspired Polymeric Materials Lab, Department of Chemistry, Indian Institute of Technology─Guwahati, Kamrup, Assam 781039, India
| | - Manideepa Dhar
- Bio-Inspired Polymeric Materials Lab, Department of Chemistry, Indian Institute of Technology─Guwahati, Kamrup, Assam 781039, India
| | - Uttam Manna
- Bio-Inspired Polymeric Materials Lab, Department of Chemistry, Indian Institute of Technology─Guwahati, Kamrup, Assam 781039, India
- Centre for Nanotechnology, Indian Institute of Technology─Guwahati, Kamrup, Assam 781039, India
- School of Health Science and Technology, Indian Institute of Technology─Guwahati, Kamrup, Assam 781039, India
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3
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Zhao W, Wang Y, Han M, Xu J, Tam KC. Surface Modification, Topographic Design and Applications of Superhydrophobic Systems. Chemistry 2022; 28:e202202657. [PMID: 36315127 DOI: 10.1002/chem.202202657] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2022] [Indexed: 11/27/2022]
Abstract
Superhydrophobic surfaces with expanded wetting behaviors, like tunable adhesion, hybrid surface hydrophobicity and smart hydrophobic switching have attracted increasing attention due to their broad applications. Herein, the construction methods, mechanisms and advanced applications of special superhydrophobicity are reviewed, and hydro/superhydrophobic modifications are categorized and discussed based on their surface chemistry, and topographic design. The formation and maintenance of special superhydrophobicity in the metastable state are also examined and explored. In addition, particular attention is paid to the use of special wettability in various applications, such as membrane distillation, droplet-based electricity generators and anti-fogging surfaces. Finally, the challenges for practical applications and future research directions are discussed.
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Affiliation(s)
- Weinan Zhao
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, N2L 3G1, Canada
| | - Yi Wang
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, N2L 3G1, Canada
| | - Mei Han
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, N2L 3G1, Canada
| | - Jiaxin Xu
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, N2L 3G1, Canada
| | - Kam Chiu Tam
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario, N2L 3G1, Canada
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4
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Shome A, Das A, Borbora A, Dhar M, Manna U. Role of chemistry in bio-inspired liquid wettability. Chem Soc Rev 2022; 51:5452-5497. [PMID: 35726911 DOI: 10.1039/d2cs00255h] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Chemistry and topography are the two distinct available tools for customizing different bio-inspired liquid wettability including superhydrophobicity, superamphiphobicity, underwater superoleophobicity, underwater superoleophilicity, and liquid infused slippery property. In nature, various living species possessing super and special liquid wettability inherently comprises of distinctly patterned surface topography decorated with low/high surface energy. Inspired from the topographically diverse natural species, the variation in surface topography has been the dominant approach for constructing bio-inspired antiwetting interfaces. However, recently, the modulation of chemistry has emerged as a facile route for the controlled tailoring of a wide range of bio-inspired liquid wettability. This review article aims to summarize the various reports published over the years that has elaborated the distinctive importance of both chemistry and topography in imparting and modulating various bio-inspired wettability. Moreover, this article outlines some obvious advantages of chemical modulation approach over topographical variation. For example, the strategic use of the chemical approach has allowed the facile, simultaneous, and independent tailoring of both liquid wettability and other relevant physical properties. We have also discussed the design of different antiwetting patterned and stimuli-responsive interfaces following the strategic and precise alteration of chemistry for various prospective applications.
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Affiliation(s)
- Arpita Shome
- Bio-Inspired Polymeric Materials Lab, Department of Chemistry, Indian Institute of Technology Guwahati, Kamrup, Assam-781039, India.
| | - Avijit Das
- Bio-Inspired Polymeric Materials Lab, Department of Chemistry, Indian Institute of Technology Guwahati, Kamrup, Assam-781039, India.
| | - Angana Borbora
- Bio-Inspired Polymeric Materials Lab, Department of Chemistry, Indian Institute of Technology Guwahati, Kamrup, Assam-781039, India.
| | - Manideepa Dhar
- Bio-Inspired Polymeric Materials Lab, Department of Chemistry, Indian Institute of Technology Guwahati, Kamrup, Assam-781039, India.
| | - Uttam Manna
- Bio-Inspired Polymeric Materials Lab, Department of Chemistry, Indian Institute of Technology Guwahati, Kamrup, Assam-781039, India. .,Centre for Nanotechnology, Indian Institute of Technology Guwahati, Kamrup, Assam-781039, India.,Jyoti and Bhupat Mehta School of Health Science and Technology, Indian Institute of Technology Guwahati, Kamrup, Assam-781039, India
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5
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Sun L, Guo J, Chen H, Zhang D, Shang L, Zhang B, Zhao Y. Tailoring Materials with Specific Wettability in Biomedical Engineering. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2100126. [PMID: 34369090 PMCID: PMC8498887 DOI: 10.1002/advs.202100126] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 06/22/2021] [Indexed: 05/02/2023]
Abstract
As a fundamental feature of solid surfaces, wettability is playing an increasingly important role in our daily life. Benefitting from the inspiration of biological paradigms and the development in manufacturing technology, numerous wettability materials with elaborately designed surface topology and chemical compositions have been fabricated. Based on these advances, wettability materials have found broad technological implications in various fields ranging from academy, industry, agriculture to biomedical engineering. Among them, the practical applications of wettability materials in biomedical-related fields are receiving remarkable researches during the past decades because of the increasing attention to healthcare. In this review, the research progress of materials with specific wettability is discussed. After briefly introducing the underlying mechanisms, the fabrication strategies of artificial materials with specific wettability are described. The emphasis is put on the application progress of wettability biomaterials in biomedical engineering. The prospects for the future trend of wettability materials are also presented.
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Affiliation(s)
- Lingyu Sun
- Institute of Translational MedicineDepartment of RadiologyThe Affiliated Drum Tower Hospital of Nanjing University Medical SchoolNanjing210002China
- State Key Laboratory of BioelectronicsSchool of Biological Science and Medical EngineeringSoutheast UniversityNanjing210096China
| | - Jiahui Guo
- State Key Laboratory of BioelectronicsSchool of Biological Science and Medical EngineeringSoutheast UniversityNanjing210096China
| | - Hanxu Chen
- State Key Laboratory of BioelectronicsSchool of Biological Science and Medical EngineeringSoutheast UniversityNanjing210096China
| | - Dagan Zhang
- Institute of Translational MedicineDepartment of RadiologyThe Affiliated Drum Tower Hospital of Nanjing University Medical SchoolNanjing210002China
| | - Luoran Shang
- Zhongshan‐Xuhui Hospitalthe Shanghai Key Laboratory of Medical EpigeneticsInstitutes of Biomedical SciencesFudan UniversityShanghai200032China
| | - Bing Zhang
- Institute of Translational MedicineDepartment of RadiologyThe Affiliated Drum Tower Hospital of Nanjing University Medical SchoolNanjing210002China
| | - Yuanjin Zhao
- Institute of Translational MedicineDepartment of RadiologyThe Affiliated Drum Tower Hospital of Nanjing University Medical SchoolNanjing210002China
- State Key Laboratory of BioelectronicsSchool of Biological Science and Medical EngineeringSoutheast UniversityNanjing210096China
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6
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Hu S, Shi Z, Zheng R, Ye W, Gao X, Zhao W, Yang G. Superhydrophobic Liquid-Solid Contact Triboelectric Nanogenerator as a Droplet Sensor for Biomedical Applications. ACS APPLIED MATERIALS & INTERFACES 2020; 12:40021-40030. [PMID: 32805893 DOI: 10.1021/acsami.0c10097] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Superhydrophobic surfaces repel water and other liquids such as tissue fluid, blood, urine, and pus, which can open up a new avenue for the development of biomedical devices and has led to promising advances across diverse fields, including plasma separator devices, blood-repellent sensors, vascular stents, and heart valves. Here, the fabrication of superhydrophobic liquid-solid contact triboelectric nanogenerators (TENGs) and their biomedical applications as droplet sensors are reported. Triboelectrification energy can be captured and released when droplets are colliding or slipping on the superhydrophobic layer. The developed superhydrophobic TENG possesses multiple advantages in terms of simple fabrication, bendability, self-cleaning, self-adhesiveness, high sensitivity, and repellency to not only water but also a variety of solutions, including blood with a contact angle of 158.6°. As a self-powered sensor, the developed prototypes of a drainage bottle droplet sensor and a smart intravenous injection monitor based on the superhydrophobic liquid-solid contact TENG can monitor the clinical drainage operation and intravenous infusion in real time, respectively. These prototypes suggest the potential merit of this superhydrophobic liquid-solid contact TENG in clinical application, paving the way for accurately monitoring clinical drainage operations and intravenous injection or blood transfusion in the future.
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Affiliation(s)
- Sanming Hu
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Zhijun Shi
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Ruizhu Zheng
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Weiliang Ye
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Xing Gao
- Research Centre for Medical Robotics and Minimally Invasive Surgical Devices, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518055, China
| | - Weiwei Zhao
- School of Mechanical and Electronic Engineering, Wuhan University of Technology, Wuhan 430070, China
| | - Guang Yang
- College of Life Science and Technology, Huazhong University of Science and Technology, Wuhan 430074, China
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7
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Rather AM, Shome A, Bhunia BK, Panuganti A, Mandal BB, Manna U. Simultaneous and controlled release of two different bioactive small molecules from nature inspired single material. J Mater Chem B 2018; 6:7692-7702. [DOI: 10.1039/c8tb02406e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Simultaneous and extended (over 6 months) release of two different bioactive small molecules from single polymeric material was successfully achieved through strategic use of metastable trapped air for the first time.
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Affiliation(s)
- Adil M. Rather
- Department of Chemistry
- Indian Institute of Technology-Guwahati
- Kamrup
- India
| | - Arpita Shome
- Department of Chemistry
- Indian Institute of Technology-Guwahati
- Kamrup
- India
| | - Bibhas K. Bhunia
- Department of Chemistry
- Indian Institute of Technology-Guwahati
- Kamrup
- India
| | - Aparna Panuganti
- Department of Chemistry
- Indian Institute of Technology-Guwahati
- Kamrup
- India
| | - Biman B. Mandal
- Department of Chemistry
- Indian Institute of Technology-Guwahati
- Kamrup
- India
| | - Uttam Manna
- Department of Chemistry
- Indian Institute of Technology-Guwahati
- Kamrup
- India
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8
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Pan Z, Cheng F, Zhao B. Bio-Inspired Polymeric Structures with Special Wettability and Their Applications: An Overview. Polymers (Basel) 2017; 9:E725. [PMID: 30966026 PMCID: PMC6418807 DOI: 10.3390/polym9120725] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2017] [Revised: 12/08/2017] [Accepted: 12/14/2017] [Indexed: 12/15/2022] Open
Abstract
It is not unusual for humans to be inspired by natural phenomena to develop new advanced materials; such materials are called bio-inspired materials. Interest in bio-inspired polymeric superhydrophilic, superhydrophobic, and superoleophobic materials has substantially increased over the last few decades, as has improvement in the related technologies. This review reports the latest developments in bio-inspired polymeric structures with desired wettability that have occurred by mimicking the structures of lotus leaf, rose petals, and the wings and shells of various creatures. The intrinsic role of surface chemistry and structure on delivering superhydrophilicity, superhydrophobicity, and superoleophobicity has been extensively explored. Typical polymers, commonly used structures, and techniques involved in developing bio-inspired surfaces with desired wettability are discussed. Additionally, the latest applications of bio-inspired structures with desired wettability in human activities are also introduced.
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Affiliation(s)
- Zihe Pan
- Institute of Resources and Environmental Engineering, Shanxi University, 92 Wucheng Road, Xiaodian District, Taiyuan 030006, Shanxi, China.
- Shanxi Collaborative Innovation Center of High Value-Added Utilization of Coal-Related Wastes, Taiyuan 030006, Shanxi, China.
- Department of Chemical Engineering, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada.
- Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada.
| | - Fangqin Cheng
- Institute of Resources and Environmental Engineering, Shanxi University, 92 Wucheng Road, Xiaodian District, Taiyuan 030006, Shanxi, China.
- Shanxi Collaborative Innovation Center of High Value-Added Utilization of Coal-Related Wastes, Taiyuan 030006, Shanxi, China.
| | - Boxin Zhao
- Department of Chemical Engineering, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada.
- Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada.
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9
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Rather AM, Mahato S, Maji K, Gogoi N, Manna U. 'Reactive' nano-complex coated medical cotton: a facile avenue for tailored release of small molecules. NANOSCALE 2017; 9:16154-16165. [PMID: 28809421 DOI: 10.1039/c7nr03990e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Controlled and sustained release of drug-like small molecules in an aqueous medium still remains a challenging problem due to rapid infiltration of liquid water in most reported drug release systems. However, internal-superhydrophobicity with an antifouling property extending beyond the surface of a material recently has been recognized as a potential avenue for sustained and extended release of drug-like small molecules. Sluggish removal of metastable trapped air in a superhyrophobic material provides a basis to achieve extended release of encapsulated small molecules. In this article, naturally abundant medical-cotton-extensively used in wound management including control of bleeding, absorbance of secretions and protecting wounds from contamination-is strategically exploited in tailoring (from rapid to extended) the release of small molecules by appropriate modulation of liquid water wettability. Modulation included bio-mimicked adhesive and non-adhesive superhydrophobicity of the medical cotton without erosion of any polymeric material. In this process, amine 'reactive' nano-complexes (RNC) were prepared by just mixing branched poly(ethylenimine) (BPEI) with dipentaerythritol pentaacrylate (5Acl) in ethanol with appropriate compositions. Then they were covalently immobilized on fibrous medical-cotton through a facile and robust 1,4-conjugated addition reaction. Residual acrylate moieties in the immobilized RNC provide an opportunity to tailor water wettability through strategic and appropriate post-chemical modification of RNC-coated medical cotton with a primary amine containing various small molecules. This medical-cotton with tunable wettability was exploited further to control the release rate of small molecules from rapid (<24 h) to sustained (>100 days) times. A volatile solvent induced transient and reversible switching of anti-fouling properties which allowed further varying the amount of post-loading small molecules into the medical cotton up to 2.36 wt% without compromising the embedded anti-wetting property. Thus, our current approach has immense potential to develop appropriate materials for a sustained and controlled release of small molecules from a clinically relevant substrate (i.e., medical-cotton) and may be useful in various bio-medical applications including improving wound management, preventing bacterial infections, better pain management, etc.
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Affiliation(s)
- Adil Majeed Rather
- Department of Chemistry, Indian Institute of Technology-Guwahati, Kamrup, Assam 781039, India.
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10
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Kratochvil MJ, Manna U, Lynn DM. Superhydrophobic polymer multilayers for the filtration‐ and absorption‐based separation of oil/water mixtures. ACTA ACUST UNITED AC 2017. [DOI: 10.1002/pola.28691] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Michael J. Kratochvil
- Department of Chemistry1101 University Avenue, University of WisconsinMadison Wisconsin53706
| | - Uttam Manna
- Department of Chemical and Biological Engineering, 1415 Engineering DriveUniversity of WisconsinMadison Wisconsin53706
| | - David M. Lynn
- Department of Chemistry1101 University Avenue, University of WisconsinMadison Wisconsin53706
- Department of Chemical and Biological Engineering, 1415 Engineering DriveUniversity of WisconsinMadison Wisconsin53706
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11
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Zayas-Gonzalez YM, Ortiz BJ, Lynn DM. Layer-by-Layer Assembly of Amine-Reactive Multilayers Using an Azlactone-Functionalized Polymer and Small-Molecule Diamine Linkers. Biomacromolecules 2017; 18:1499-1508. [PMID: 28332831 PMCID: PMC5462121 DOI: 10.1021/acs.biomac.7b00043] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
We report the reactive layer-by-layer assembly of amine-reactive polymer multilayers using an azlactone-functionalized polymer and small-molecule diamine linkers. This approach yields cross-linked polymer/linker-type films that can be further functionalized, after fabrication, by treatment with functional primary amines, and provides opportunities to incorporate other useful functionality that can be difficult to introduce using other polyamine building blocks. Films fabricated using poly(2-vinyl-4,4-dimethylazlactone) (PVDMA) and three model nondegradable aliphatic diamine linkers yielded reactive thin films that were stable upon incubation in physiologically relevant media. By contrast, films fabricated using PVDMA and varying amounts of the model disulfide-containing diamine linker cystamine were stable in normal physiological media, but were unstable and eroded rapidly upon exposure to chemical reducing agents. We demonstrate that this approach can be used to fabricate functionalized polymer microcapsules that degrade in reducing environments, and that rates of erosion, extents of capsule swelling, and capsule degradation can be tuned by control over the relative concentration of cystamine linker used during fabrication. The polymer/linker approach used here expands the range of properties and functions that can be designed into reactive PVDMA-based coatings, including functionality that can degrade, erode, and undergo triggered destruction in aqueous environments. We therefore anticipate that these approaches will be useful for the functionalization, patterning, and customization of coatings, membranes, capsules, and interfaces of potential utility in biotechnical or biomedical contexts and other areas where degradation and transience are desired. The proof of concept strategies reported here are likely to be general, and should prove useful for the design of amine-reactive coatings containing other functional structures by judicious control of the structures of the linkers used during assembly.
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Affiliation(s)
- Yashira M Zayas-Gonzalez
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison , 1415 Engineering Drive, Madison, Wisconsin 53706, United States
| | - Benjamín J Ortiz
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison , 1415 Engineering Drive, Madison, Wisconsin 53706, United States
| | - David M Lynn
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison , 1415 Engineering Drive, Madison, Wisconsin 53706, United States
- Department of Chemistry, University of Wisconsin-Madison , 1101 University Avenue, Madison, Wisconsin 53706, United States
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12
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Falde EJ, Yohe ST, Colson YL, Grinstaff MW. Superhydrophobic materials for biomedical applications. Biomaterials 2016; 104:87-103. [PMID: 27449946 PMCID: PMC5136454 DOI: 10.1016/j.biomaterials.2016.06.050] [Citation(s) in RCA: 191] [Impact Index Per Article: 23.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2016] [Revised: 06/16/2016] [Accepted: 06/20/2016] [Indexed: 12/14/2022]
Abstract
Superhydrophobic surfaces are actively studied across a wide range of applications and industries, and are now finding increased use in the biomedical arena as substrates to control protein adsorption, cellular interaction, and bacterial growth, as well as platforms for drug delivery devices and for diagnostic tools. The commonality in the design of these materials is to create a stable or metastable air layer at the material surface, which lends itself to a number of unique properties. These activities are catalyzing the development of new materials, applications, and fabrication techniques, as well as collaborations across material science, chemistry, engineering, and medicine given the interdisciplinary nature of this work. The review begins with a discussion of superhydrophobicity, and then explores biomedical applications that are utilizing superhydrophobicity in depth including material selection characteristics, in vitro performance, and in vivo performance. General trends are offered for each application in addition to discussion of conflicting data in the literature, and the review concludes with the authors' future perspectives on the utility of superhydrophobic biomaterials for medical applications.
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Affiliation(s)
- Eric J Falde
- Departments of Biomedical Engineering, Chemistry and Medicine, Boston University, 590 Commonwealth Avenue, Boston, MA, 02215, USA
| | - Stefan T Yohe
- Departments of Biomedical Engineering, Chemistry and Medicine, Boston University, 590 Commonwealth Avenue, Boston, MA, 02215, USA
| | - Yolonda L Colson
- Division of Thoracic Surgery, Department of Surgery Brigham and Women's Hospital, Boston, MA, 02115, USA
| | - Mark W Grinstaff
- Departments of Biomedical Engineering, Chemistry and Medicine, Boston University, 590 Commonwealth Avenue, Boston, MA, 02215, USA.
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13
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Zayas-Gonzalez YM, Lynn DM. Degradable Amine-Reactive Coatings Fabricated by the Covalent Layer-by-Layer Assembly of Poly(2-vinyl-4,4-dimethylazlactone) with Degradable Polyamine Building Blocks. Biomacromolecules 2016; 17:3067-75. [PMID: 27525718 DOI: 10.1021/acs.biomac.6b00975] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
We report the fabrication of reactive and degradable cross-linked polymer multilayers by the reactive/covalent layer-by-layer assembly of a non-degradable azlactone-functionalized polymer [poly(2-vinyl-4,4-dimethylazlactone), PVDMA] with hydrolytically or enzymatically degradable polyamine building blocks. Fabrication of multilayers using PVDMA and a hydrolytically degradable poly(β-amino ester) (PBAE) containing primary amine side chains yielded multilayers (∼100 nm thick) that degraded over ∼12 days in physiologically relevant media. Physicochemical characterization and studies on stable films fabricated using PVDMA and an analogous non-degradable poly(amidoamine) suggested that erosion occurred by chemical hydrolysis of backbone esters in the PBAE components of these assemblies. These degradable assemblies also contained residual amine-reactive azlactone functionality that could be used to impart new functionality to the coatings post-fabrication. Cross-linked multilayers fabricated using PVDMA and the enzymatically degradable polymer poly(l-lysine) were structurally stable for prolonged periods in physiological media, but degraded over ∼24 h when the enzyme trypsin was added. Past studies demonstrate that multilayers fabricated using PVDMA and non-degradable polyamines [e.g., poly(ethylenimine)] enable the design and patterning of useful nano/biointerfaces and other materials that are structurally stable in physiological media. The introduction of degradable functionality into PVDMA-based multilayers creates opportunities to exploit the reactivity of azlactone groups for the design of reactive materials and functional coatings that degrade or erode in environments that are relevant in biomedical, biotechnological, and environmental contexts. This "degradable building block" strategy should be general; we anticipate that this approach can also be extended to the design of amine-reactive multilayers that degrade upon exposure to specific chemical triggers, selective enzymes, or contact with cells by judicious design of the degradable polyamine building blocks used to fabricate the coatings.
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Affiliation(s)
- Yashira M Zayas-Gonzalez
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison , 1415 Engineering Drive, Madison, Wisconsin 53706, United States , and
| | - David M Lynn
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison , 1415 Engineering Drive, Madison, Wisconsin 53706, United States , and.,Department of Chemistry, University of Wisconsin-Madison , 1101 University Avenue, Madison, Wisconsin 53706, United States
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14
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Kratochvil MJ, Welsh MA, Manna U, Ortiz BJ, Blackwell HE, Lynn DM. Slippery Liquid-Infused Porous Surfaces that Prevent Bacterial Surface Fouling and Inhibit Virulence Phenotypes in Surrounding Planktonic Cells. ACS Infect Dis 2016; 2:509-17. [PMID: 27626103 PMCID: PMC5198836 DOI: 10.1021/acsinfecdis.6b00065] [Citation(s) in RCA: 68] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Surfaces that can both prevent bacterial biofouling and inhibit the expression of virulence phenotypes in surrounding planktonic bacteria are of interest in a broad range of contexts. Here, we report new slippery-liquid infused porous surfaces (SLIPS) that resist bacterial colonization (owing to inherent "slippery" surface character) and also attenuate virulence phenotypes in non-adherent cells by gradually releasing small-molecule quorum sensing inhibitors (QSIs). QSIs active against Pseudomonas aeruginosa can be loaded into SLIPS without loss of their slippery and antifouling properties, and imbedded agents can be released into surrounding media over hours to days depending on the structures of the loaded agent. This controlled-release approach is useful for inhibiting virulence factor production and can also inhibit bacterial biofilm formation on nearby, non-SLIPS-coated surfaces. Finally, we demonstrate that this approach is compatible with the simultaneous release of more than one type of QSI, enabling greater control over virulence and suggesting new opportunities to tune the antifouling properties of these slippery surfaces.
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Affiliation(s)
- Michael J Kratochvil
- Department of Chemistry and ‡Department of Chemical and Biological Engineering, University of Wisconsin-Madison , Madison, Wisconsin 53706, United States
| | - Michael A Welsh
- Department of Chemistry and ‡Department of Chemical and Biological Engineering, University of Wisconsin-Madison , Madison, Wisconsin 53706, United States
| | - Uttam Manna
- Department of Chemistry and ‡Department of Chemical and Biological Engineering, University of Wisconsin-Madison , Madison, Wisconsin 53706, United States
| | - Benjamín J Ortiz
- Department of Chemistry and ‡Department of Chemical and Biological Engineering, University of Wisconsin-Madison , Madison, Wisconsin 53706, United States
| | - Helen E Blackwell
- Department of Chemistry and ‡Department of Chemical and Biological Engineering, University of Wisconsin-Madison , Madison, Wisconsin 53706, United States
| | - David M Lynn
- Department of Chemistry and ‡Department of Chemical and Biological Engineering, University of Wisconsin-Madison , Madison, Wisconsin 53706, United States
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15
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Manna U, Raman N, Welsh MA, Zayas-Gonzalez YM, Blackwell HE, Palecek SP, Lynn DM. Slippery Liquid-Infused Porous Surfaces that Prevent Microbial Surface Fouling and Kill Non-Adherent Pathogens in Surrounding Media: A Controlled Release Approach. ADVANCED FUNCTIONAL MATERIALS 2016; 26:3599-3611. [PMID: 28713229 PMCID: PMC5507623 DOI: 10.1002/adfm.201505522] [Citation(s) in RCA: 78] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
Many types of slippery liquid-infused porous surfaces (or 'SLIPS') can resist adhesion and colonization by microorganisms. These 'slippery' materials thus offer new approaches to prevent fouling on a range of commercial and industrial surfaces, including biomedical devices. However, while SLIPS can prevent fouling on surfaces to which they are applied, they can currently do little to prevent the proliferation of non-adherent (planktonic) organisms, stop them from colonizing other surfaces, or prevent them from engaging in other behaviors that could lead to infection and associated burdens. Here, we report an approach to the design of multi-functional SLIPS that addresses these issues and expands the potential utility of slippery surfaces in antimicrobial contexts. Our approach is based on the incorporation and controlled release of small-molecule antimicrobial agents from the porous matrices used to host infused slippery oil phases. We demonstrate that SLIPS fabricated using nanoporous polymer multilayers can prevent short- and longer-term colonization and biofilm formation by four common fungal and bacterial pathogens (Candida albicans, Pseudomonas aeruginosa, Escherichia coli, and Staphylococcus aureus), and that the polymer and oil phases comprising these materials can be exploited to load and sustain the release of triclosan, a model hydrophobic and broad-spectrum antimicrobial agent, into surrounding media. This approach both improves the inherent anti-fouling properties of these materials and endows them with the ability to efficiently kill planktonic pathogens. Finally, we show that this approach can be used to fabricate dual-action SLIPS on complex surfaces, including the luminal surfaces of flexible catheter tubes. This strategy has the potential to be general; we anticipate that the materials, strategies, and concepts reported here will enable new approaches to the design of slippery surfaces with improved anti-fouling properties and open the door to new applications of slippery liquid-infused materials that host or promote the release of a variety of other active agents.
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Affiliation(s)
- Uttam Manna
- Department of Chemical & Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, WI 53706, USA
| | - Namrata Raman
- Department of Chemical & Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, WI 53706, USA
| | - Michael A Welsh
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706, USA
| | - Yashira M Zayas-Gonzalez
- Department of Chemical & Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, WI 53706, USA
| | - Helen E Blackwell
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706, USA
| | - Sean P Palecek
- Department of Chemical & Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, WI 53706, USA
| | - David M Lynn
- Department of Chemical & Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, WI 53706, USA
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16
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Wang J, Kaplan JA, Colson YL, Grinstaff MW. Stretch-Induced Drug Delivery from Superhydrophobic Polymer Composites: Use of Crack Propagation Failure Modes for Controlling Release Rates. Angew Chem Int Ed Engl 2016; 55:2796-800. [PMID: 26804182 PMCID: PMC4899983 DOI: 10.1002/anie.201511052] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2015] [Indexed: 12/14/2022]
Abstract
The concept of using crack propagation in polymeric materials to control drug release and its first demonstration are reported. The composite drug delivery system consists of highly-textured superhydrophobic electrosprayed microparticle coatings, composed of biodegradable and biocompatible polymers poly(caprolactone) and poly(glycerol monostearate carbonate-co-caprolactone), and a cellulose/polyester core. The release of entrapped agents is controlled by the magnitude of applied strain, resulting in a graded response from water infiltration through the propagating patterned cracks in the coating. Strain-dependent delivery of the anticancer agents cisplatin and 7-ethyl-10-hydroxycamptothecin to esophageal cancer cells (OE33) in vitro is observed. Finally the device is integrated with an esophageal stent to demonstrate delivery of fluorescein diacetate, using applied tension, to an ex vivo esophagus.
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Affiliation(s)
- Julia Wang
- Departments of Biomedical Engineering and Chemistry, Boston University, Boston, MA, 02215, USA
| | - Jonah A Kaplan
- Departments of Biomedical Engineering and Chemistry, Boston University, Boston, MA, 02215, USA
| | - Yolonda L Colson
- Division of Thoracic Surgery, Department of Surgery, Brigham and Women's Hospital, Boston, MA, 02115, USA
| | - Mark W Grinstaff
- Departments of Biomedical Engineering and Chemistry, Boston University, Boston, MA, 02215, USA.
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17
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Wang J, Kaplan JA, Colson YL, Grinstaff MW. Stretch‐Induced Drug Delivery from Superhydrophobic Polymer Composites: Use of Crack Propagation Failure Modes for Controlling Release Rates. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201511052] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Julia Wang
- Departments of Biomedical Engineering and Chemistry Boston University Boston MA 02215 USA
| | - Jonah A. Kaplan
- Departments of Biomedical Engineering and Chemistry Boston University Boston MA 02215 USA
| | - Yolonda L. Colson
- Division of Thoracic Surgery Department of Surgery Brigham and Women's Hospital Boston MA 02115 USA
| | - Mark W. Grinstaff
- Departments of Biomedical Engineering and Chemistry Boston University Boston MA 02215 USA
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18
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Kaplan JA, Liu R, Freedman JD, Padera R, Schwartz J, Colson YL, Grinstaff MW. Prevention of lung cancer recurrence using cisplatin-loaded superhydrophobic nanofiber meshes. Biomaterials 2015; 76:273-81. [PMID: 26547283 DOI: 10.1016/j.biomaterials.2015.10.060] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2015] [Revised: 10/20/2015] [Accepted: 10/26/2015] [Indexed: 02/02/2023]
Abstract
For early stage lung cancer patients, local cancer recurrence after surgical resection is a significant concern and stems from microscopic disease left behind after surgery. Here we apply a local drug delivery strategy to combat local lung cancer recurrence after resection using non-woven, biodegradable nanofiber meshes loaded with cisplatin. The meshes are fabricated using a scalable electrospinning process from two biocompatible polymers--polycaprolactone and poly(glycerol monostearate-co-caprolactone)--to afford favorable mechanical properties for use in a dynamic tissue such as the lung. Owing to their rough nanostructure and hydrophobic polymer composition, these meshes exhibit superhydrophobicity, and it is this non-wetting nature that sustains the release of cisplatin in a linear fashion over ∼90 days, with anti-cancer efficacy demonstrated using an in vitro Lewis Lung carcinoma (LLC) cell assay. The in vivo evaluation of cisplatin-loaded superhydrophobic meshes in the prevention of local cancer recurrence in a murine model of LLC surgical resection demonstrated a statistically significant increase (p = 0.0006) in median recurrence-free survival to >23 days, compared to standard intraperitoneal cisplatin therapy of equivalent dose. These results emphasize the importance of supplementing cytoreductive surgery with local drug delivery strategies to improve prognosis for lung cancer patients undergoing tumor resection.
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Affiliation(s)
- Jonah A Kaplan
- Department of Biomedical Engineering, Boston University, 590 Commonwealth Ave., Boston, MA 02215, USA; Department of Chemistry, Boston University, 590 Commonwealth Ave., Boston, MA 02215, USA; Department of Medicine, Boston University, 590 Commonwealth Ave., Boston, MA 02215, USA
| | - Rong Liu
- Department of Surgery, Brigham and Women's Hospital, 75 Francis St., Boston, MA 02115, USA
| | - Jonathan D Freedman
- Department of Biomedical Engineering, Boston University, 590 Commonwealth Ave., Boston, MA 02215, USA; Department of Chemistry, Boston University, 590 Commonwealth Ave., Boston, MA 02215, USA; Department of Medicine, Boston University, 590 Commonwealth Ave., Boston, MA 02215, USA
| | - Robert Padera
- Department of Pathology, Brigham and Women's Hospital, 75 Francis Street, Boston, MA 02115, USA
| | - John Schwartz
- AcuityBio Corp., 200 Upland Rd., Newton, MA 02460, USA
| | - Yolonda L Colson
- Department of Surgery, Brigham and Women's Hospital, 75 Francis St., Boston, MA 02115, USA.
| | - Mark W Grinstaff
- Department of Biomedical Engineering, Boston University, 590 Commonwealth Ave., Boston, MA 02215, USA; Department of Chemistry, Boston University, 590 Commonwealth Ave., Boston, MA 02215, USA; Department of Medicine, Boston University, 590 Commonwealth Ave., Boston, MA 02215, USA.
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19
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Kaplan J, Grinstaff M. Fabricating Superhydrophobic Polymeric Materials for Biomedical Applications. J Vis Exp 2015:e53117. [PMID: 26383018 DOI: 10.3791/53117] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
Superhydrophobic materials, with surfaces possessing permanent or metastable non-wetted states, are of interest for a number of biomedical and industrial applications. Here we describe how electrospinning or electrospraying a polymer mixture containing a biodegradable, biocompatible aliphatic polyester (e.g., polycaprolactone and poly(lactide-co-glycolide)), as the major component, doped with a hydrophobic copolymer composed of the polyester and a stearate-modified poly(glycerol carbonate) affords a superhydrophobic biomaterial. The fabrication techniques of electrospinning or electrospraying provide the enhanced surface roughness and porosity on and within the fibers or the particles, respectively. The use of a low surface energy copolymer dopant that blends with the polyester and can be stably electrospun or electrosprayed affords these superhydrophobic materials. Important parameters such as fiber size, copolymer dopant composition and/or concentration, and their effects on wettability are discussed. This combination of polymer chemistry and process engineering affords a versatile approach to develop application-specific materials using scalable techniques, which are likely generalizable to a wider class of polymers for a variety of applications.
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Affiliation(s)
- Jonah Kaplan
- Department of Biomedical Engineering, Boston University
| | - Mark Grinstaff
- Departments of Biomedical Engineering, Chemistry, and Medicine, Boston University;
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20
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Kratochvil MJ, Tal-Gan Y, Yang T, Blackwell HE, Lynn DM. Nanoporous Superhydrophobic Coatings that Promote the Extended Release of Water-Labile Quorum Sensing Inhibitors and Enable Long-Term Modulation of Quorum Sensing in Staphylococcus aureus. ACS Biomater Sci Eng 2015; 1:1039-1049. [PMID: 26501126 PMCID: PMC4604486 DOI: 10.1021/acsbiomaterials.5b00313] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Accepted: 08/26/2015] [Indexed: 11/30/2022]
Abstract
![]()
Materials and coatings that inhibit
bacterial colonization are
of interest in a broad range of biomedical, environmental, and industrial
applications. In view of the rapid increase in bacterial resistance
to conventional antibiotics, the development of new strategies that
target nonessential pathways in bacterial pathogens—and that
thereby limit growth and reduce virulence through nonbiocidal means—has
attracted considerable attention. Bacterial quorum sensing (QS) represents
one such target, and is intimately connected to virulence in many
human pathogens. Here, we demonstrate that the properties of nanoporous,
polymer-based superhydrophobic coatings can be exploited to host and
subsequently sustain the extended release of potent and water-labile
peptide-based inhibitors of QS (QSIs) in Staphylococcus aureus. Our results demonstrate that these peptidic QSIs can be released
into surrounding media for periods of at least 8 months, and that
they strongly inhibit agr-based QS in S. aureus for
at least 40 days. These results also suggest that these extremely
nonwetting coatings can confer protection against the rapid hydrolysis
of these water-labile peptides, thereby extending their useful lifetimes.
Finally, we demonstrate that these peptide-loaded superhydrophobic
coatings can strongly modulate the QS-controlled formation of biofilm
in wild-type S. aureus. These nanoporous superhydrophobic
films provide a new, useful, and nonbiocidal approach to the design
of coatings that attenuate bacterial virulence. This approach has
the potential to be general, and could prove suitable for the encapsulation,
protection, and release of other classes of water-sensitive agents.
We anticipate that the materials, strategies, and concepts reported
here will enable new approaches to the long-term attenuation of QS
and associated bacterial phenotypes in a range of basic research and
applied contexts.
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Affiliation(s)
- Michael J Kratochvil
- Department of Chemistry, 1101 University Avenue, University of Wisconsin - Madison , Madison, Wisconsin 53706, United States
| | - Yftah Tal-Gan
- Department of Chemistry, 1101 University Avenue, University of Wisconsin - Madison , Madison, Wisconsin 53706, United States
| | - Tian Yang
- Department of Chemistry, 1101 University Avenue, University of Wisconsin - Madison , Madison, Wisconsin 53706, United States
| | - Helen E Blackwell
- Department of Chemistry, 1101 University Avenue, University of Wisconsin - Madison , Madison, Wisconsin 53706, United States
| | - David M Lynn
- Department of Chemistry, 1101 University Avenue, University of Wisconsin - Madison , Madison, Wisconsin 53706, United States ; Department of Chemical and Biological Engineering, 1415 Engineering Drive, University of Wisconsin - Madison , Madison, Wisconsin 53706, United States
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21
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Falde EJ, Freedman JD, Herrera VLM, Yohe ST, Colson YL, Grinstaff MW. Layered superhydrophobic meshes for controlled drug release. J Control Release 2015; 214:23-9. [PMID: 26160309 DOI: 10.1016/j.jconrel.2015.06.042] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Accepted: 06/30/2015] [Indexed: 01/08/2023]
Abstract
Layered superhydrophobic electrospun meshes composed of poly(ε-caprolactone) (PCL) and poly(glycerol monostearate-co-ε-caprolactone) (PGC-C18) are described as a local source of chemotherapeutic delivery. Specifically, the chemotherapeutic agent SN-38 is incorporated into a central 'core' layer, between two 'shield' layers of mesh without drug. This mesh is resistant to wetting of the surface and throughout the bulk due to the pronounced hydrophobicity imparted by the high roughness of a hydrophobic polymer, PGC-C18. In serum solution, these meshes exhibit slow initial drug release over 10days corresponding to media infiltrating the shield layer, followed by steady release over >30days, as the drug-loaded core layer is wetted. This sequence of events is supported by X-ray computed tomography imaging of a contrast agent solution infiltrating the mesh. In vitro cytotoxicity data collected with Lewis Lung Carcinoma (LLC) cells are consistent with this release profile, remaining cytotoxic for over 20days, longer than the unlayered version. Finally, after subcutaneous implantation in rats, histology of meshes with and without drug demonstrated good integration and lack of adverse reaction over 28days. The drug release rates, robust superhydrophobicity, in vitro cytotoxicity of SN-38 loaded meshes, and compatibility provide key design parameters for the development of an implantable chemotherapeutic-loaded device for the prevention of local lung cancer recurrence following surgical resection.
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Affiliation(s)
- Eric J Falde
- Department of Biomedical Engineering, Boston University, Boston, MA, United States
| | | | - Victoria L M Herrera
- Division of Cardiovascular Medicine, Boston University School of Medicine, Boston, MA, United States
| | - Stefan T Yohe
- Department of Biomedical Engineering, Boston University, Boston, MA, United States; Department of Pharmacology, Boston University, Boston, MA, United States
| | - Yolonda L Colson
- Division of Thoracic Surgery, Department of Surgery, Brigham and Women's Hospital, Boston, MA, United States
| | - Mark W Grinstaff
- Department of Biomedical Engineering, Boston University, Boston, MA, United States; Department of Chemistry, Boston University, Boston, MA, United States.
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22
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Bucatariu F, Ghiorghita CA, Dragan ES. Sorption/release of bioactive species in/from cross-linked poly(ethyleneimine)/poly(N-isopropylacrylamide) films constructed onto solid surfaces. HIGH PERFORM POLYM 2015. [DOI: 10.1177/0954008315584174] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Multilayer thin films are useful materials in the fabrication of controlled drug delivery systems and in controlling drug release processes. Herein, we report the step-by-step deposition of polymer multilayers based on poly(ethyleneimine) (PEI) and poly( N-isopropylacrylamide) (PNIPAAm) mediated by pyromellitic dianhydride (PM), as cross-linker of PEI chains, onto Daisogel silica microparticles. The sorption/release properties of the resulting composite microparticles for indomethacin (IDM), diclofenac sodium salt (DS), and Ponceau SS (PSS) were followed as a function of PM concentration. The sorption properties of the [(PEI-PM)/PNIPAAm] n multilayer films for all anionic species (IDM, DS, and PSS) were influenced by the number of polymer layers and the weight ratio between cross-linker and Daisogel microparticles during the cross-linking steps. It was found that the sorbed amount of anionic compounds increased with the number of polymer layers and with the decrease of PM concentration. The Langmuir and Sips model isotherms fitted well the sorption equilibrium data. The maximum equilibrium sorption capacity ( qm) evaluated by the Langmuir model, at 25°C, was 41 mg IDM g−1 of Daisogel//[(PEI-PM)/PNIPAAm]8.5 and 40 mg PSS g−1 of Daisogel//[(PEI-PM)/PNIPAAm]8.5, for a weight percentage of PM/silica of 0.1% w/w. Cumulative release of IDM was faster and higher than PSS in the first 5 h, while PSS was desorbed with a constant rate for 30 h, supporting a sustained release from Daisogel//[(PEI-PM)/PNIPAAm] n composite microparticles.
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Affiliation(s)
- Florin Bucatariu
- “Petru Poni” Institute of Macromolecular Chemistry, Iasi, Romania
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23
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Hwang J, Ahn Y. Fabrication of Superhydrophobic Silica Nanoparticles and Nanocomposite Coating on Glass Surfaces. B KOREAN CHEM SOC 2015. [DOI: 10.1002/bkcs.10025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jisu Hwang
- Department of Chemistry, GRRC; Dankook University; Yongin 448-701 Korea
| | - Yonghyun Ahn
- Department of Chemistry, GRRC; Dankook University; Yongin 448-701 Korea
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24
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Storm WL, Youn J, Reighard KP, Worley BV, Lodaya HM, Shin JH, Schoenfisch MH. Superhydrophobic nitric oxide-releasing xerogels. Acta Biomater 2014; 10:3442-8. [PMID: 24797527 DOI: 10.1016/j.actbio.2014.04.029] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2014] [Revised: 03/20/2014] [Accepted: 04/25/2014] [Indexed: 12/13/2022]
Abstract
Superhydrophobic nitric oxide (NO)-releasing xerogels were prepared by spray-coating a fluorinated silane/silica composite onto N-diazeniumdiolate NO donor-modified xerogels. The thickness of the superhydrophobic layer was used to extend NO release durations from 59 to 105h. The resulting xerogels were stable, maintaining superhydrophobicity for up to 1month (the longest duration tested) when immersed in solution, with no leaching of silica or undesirable fragmentation detected. The combination of superhydrophobicity and NO release reduced viable Pseudomonas aeruginosa adhesion by >2-logs. The killing effect of NO was demonstrated at longer bacterial contact times, with superhydrophobic NO-releasing xerogels resulting in 3.8-log reductions in adhered viable bacteria vs. controls. With no observed toxicity to L929 murine fibroblasts, NO-releasing superhydrophobic membranes may be valuable antibacterial coatings for implants as they both reduce adhesion and kill bacteria that do adhere.
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25
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Kaplan J, Lei H, Liu R, Padera R, Colson YL, Grinstaff MW. Imparting superhydrophobicity to biodegradable poly(lactide-co-glycolide) electrospun meshes. Biomacromolecules 2014; 15:2548-54. [PMID: 24901038 PMCID: PMC4215912 DOI: 10.1021/bm500410h] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2014] [Revised: 05/28/2014] [Indexed: 01/28/2023]
Abstract
The synthesis of a family of new poly(lactic acid-co-glycerol monostearate) (PLA-PGC18) copolymers and their use as biodegradable polymer dopants is reported to enhance the hydrophobicity of poly(lactic acid-co-glycolic acid) (PLGA) nonwoven meshes. Solutions of PLGA are doped with PLA-PGC18 and electrospun to form meshes with micrometer-sized fibers. Fiber diameter, percent doping, and copolymer composition influence the nonwetting nature of the meshes and alter their mechanical (tensile) properties. Contact angles as high as 160° are obtained with 30% polymer dopant. Lastly, these meshes are nontoxic, as determined by an NIH/3T3 cell biocompatibility assay, and displayed a minimal foreign body response when implanted in mice. In summary, a general method for constructing biodegradable fibrous meshes with tunable hydrophobicity is described for use in tissue engineering and drug delivery applications.
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Affiliation(s)
- Jonah
A. Kaplan
- Departments
of Biomedical Engineering and Chemistry, Boston University, Boston, Massachusetts 02215, United States
| | - Hongyi Lei
- Department of Surgery and Department of Pathology, Brigham and Women’s Hospital, 75 Francis Street, Boston, Massachusetts 02115, United States
| | - Rong Liu
- Department of Surgery and Department of Pathology, Brigham and Women’s Hospital, 75 Francis Street, Boston, Massachusetts 02115, United States
| | - Robert Padera
- Department of Surgery and Department of Pathology, Brigham and Women’s Hospital, 75 Francis Street, Boston, Massachusetts 02115, United States
| | - Yolonda L. Colson
- Department of Surgery and Department of Pathology, Brigham and Women’s Hospital, 75 Francis Street, Boston, Massachusetts 02115, United States
| | - Mark W. Grinstaff
- Departments
of Biomedical Engineering and Chemistry, Boston University, Boston, Massachusetts 02215, United States
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