1
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Angelova L, Daskalova A, Filipov E, Vila XM, Tomasch J, Avdeev G, Teuschl-Woller AH, Buchvarov I. Optimizing the Surface Structural and Morphological Properties of Silk Thin Films via Ultra-Short Laser Texturing for Creation of Muscle Cell Matrix Model. Polymers (Basel) 2022; 14:polym14132584. [PMID: 35808630 PMCID: PMC9269134 DOI: 10.3390/polym14132584] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 06/21/2022] [Accepted: 06/23/2022] [Indexed: 02/04/2023] Open
Abstract
Temporary scaffolds that mimic the extracellular matrix’s structure and provide a stable substratum for the natural growth of cells are an innovative trend in the field of tissue engineering. The aim of this study is to obtain and design porous 2D fibroin-based cell matrices by femtosecond laser-induced microstructuring for future applications in muscle tissue engineering. Ultra-fast laser treatment is a non-contact method, which generates controlled porosity—the creation of micro/nanostructures on the surface of the biopolymer that can strongly affect cell behavior, while the control over its surface characteristics has the potential of directing the growth of future muscle tissue in the desired direction. The laser structured 2D thin film matrices from silk were characterized by means of SEM, EDX, AFM, FTIR, Micro-Raman, XRD, and 3D-roughness analyses. A WCA evaluation and initial experiments with murine C2C12 myoblasts cells were also performed. The results show that by varying the laser parameters, a different structuring degree can be achieved through the initial lifting and ejection of the material around the area of laser interaction to generate porous channels with varying widths and depths. The proper optimization of the applied laser parameters can significantly improve the bioactive properties of the investigated 2D model of a muscle cell matrix.
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Affiliation(s)
- Liliya Angelova
- Institute of Electronics, Bulgarian Academy of Sciences, 72 Tzarigradsko Shousse Blvd., 1784 Sofia, Bulgaria; (A.D.); (E.F.)
- Correspondence:
| | - Albena Daskalova
- Institute of Electronics, Bulgarian Academy of Sciences, 72 Tzarigradsko Shousse Blvd., 1784 Sofia, Bulgaria; (A.D.); (E.F.)
| | - Emil Filipov
- Institute of Electronics, Bulgarian Academy of Sciences, 72 Tzarigradsko Shousse Blvd., 1784 Sofia, Bulgaria; (A.D.); (E.F.)
| | - Xavier Monforte Vila
- Department Life Science Engineering, University of Applied Sciences Technikum Wien, Höchstädtplatz 6, 1200 Vienna, Austria; (X.M.V.); (J.T.); (A.H.T.-W.)
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
| | - Janine Tomasch
- Department Life Science Engineering, University of Applied Sciences Technikum Wien, Höchstädtplatz 6, 1200 Vienna, Austria; (X.M.V.); (J.T.); (A.H.T.-W.)
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
| | - Georgi Avdeev
- Institute of Physical Chemistry, Bulgarian Academy of Sciences, Akad. G. Bonchev Str., 1113 Sofia, Bulgaria;
| | - Andreas H. Teuschl-Woller
- Department Life Science Engineering, University of Applied Sciences Technikum Wien, Höchstädtplatz 6, 1200 Vienna, Austria; (X.M.V.); (J.T.); (A.H.T.-W.)
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
| | - Ivan Buchvarov
- Faculty of Physics, St. Kliment Ohridski University of Sofia, 5 James Bourchier Blvd., 1164 Sofia, Bulgaria;
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Zhang Y, Zhang C, Chen S, Hu J, Shen L, Yu Y. Research Progress Concerning a Novel Intraocular Lens for the Prevention of Posterior Capsular Opacification. Pharmaceutics 2022; 14:pharmaceutics14071343. [PMID: 35890240 PMCID: PMC9318653 DOI: 10.3390/pharmaceutics14071343] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2022] [Revised: 06/12/2022] [Accepted: 06/23/2022] [Indexed: 11/24/2022] Open
Abstract
Posterior capsular opacification (PCO) is the most common complication resulting from cataract surgery and limits the long-term postoperative visual outcome. Using Nd:YAG laser-assisted posterior capsulotomy for the clinical treatment of symptomatic PCO increases the risks of complications, such as glaucoma, retinal diseases, uveitis, and intraocular lens (IOL) pitting. Therefore, finding how to prevent PCO development is the subject of active investigations. As a replacement organ, the IOL is implanted into the lens capsule after cataract surgery, but it is also associated with the occurrence of PCO. Using IOL as a medium for PCO prophylaxis is a more facile and efficient method that has demonstrated various clinical application prospects. Thus, scientists have conducted a lot of research on new intraocular lens fabrication methods, such as optimizing IOL materials and design, and IOL surface modification (including plasma/ultraviolet/ozone treatment, chemical grafting, drug loading, coating modification, and layer-by-layer self-assembly methods). This paper summarizes the research progress for different types of intraocular lenses prepared by different surface modifications, including anti-biofouling IOLs, enhanced-adhesion IOLs, micro-patterned IOLs, photothermal IOLs, photodynamic IOLs, and drug-loading IOLs. These modified intraocular lenses inhibit PCO development by reducing the residual intraoperative lens epithelial cells or by regulating the cellular behavior of lens epithelial cells. In the future, more works are needed to improve the biosecurity and therapeutic efficacy of these modified IOLs.
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Affiliation(s)
- Yidong Zhang
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, China; (Y.Z.); (C.Z.); (S.C.); (J.H.); (L.S.)
| | - Chengshou Zhang
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, China; (Y.Z.); (C.Z.); (S.C.); (J.H.); (L.S.)
| | - Silong Chen
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, China; (Y.Z.); (C.Z.); (S.C.); (J.H.); (L.S.)
| | - Jianghua Hu
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, China; (Y.Z.); (C.Z.); (S.C.); (J.H.); (L.S.)
- Jiande Branch, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, China
| | - Lifang Shen
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, China; (Y.Z.); (C.Z.); (S.C.); (J.H.); (L.S.)
| | - Yibo Yu
- Eye Center, The Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310058, China; (Y.Z.); (C.Z.); (S.C.); (J.H.); (L.S.)
- Correspondence:
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Jun I, Li N, Shin J, Park J, Kim YJ, Jeon H, Choi H, Cho JG, Chan Choi B, Han HS, Song JJ. Synergistic stimulation of surface topography and biphasic electric current promotes muscle regeneration. Bioact Mater 2022; 11:118-129. [PMID: 34938917 PMCID: PMC8665271 DOI: 10.1016/j.bioactmat.2021.10.015] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 09/27/2021] [Accepted: 10/14/2021] [Indexed: 12/18/2022] Open
Abstract
Developing a universal culture platform that manipulates cell fate is one of the most important tasks in the investigation of the role of the cellular microenvironment. This study focuses on the application of topographical and electrical field stimuli to human myogenic precursor cell (hMPC) cultures to assess the influences of the adherent direction, proliferation, and differentiation, and induce preconditioning-induced therapeutic benefits. First, a topographical surface of commercially available culture dishes was achieved by femtosecond laser texturing. The detachable biphasic electrical current system was then applied to the hMPCs cultured on laser-textured culture dishes. Laser-textured topographies were remarkably effective in inducing the assembly of hMPC myotubes by enhancing the orientation of adherent hMPCs compared with flat surfaces. Furthermore, electrical field stimulation through laser-textured topographies was found to promote the expression of myogenic regulatory factors compared with nonstimulated cells. As such, we successfully demonstrated that the combined stimulation of topographical and electrical cues could effectively enhance the myogenic maturation of hMPCs in a surface spatial and electrical field-dependent manner, thus providing the basis for therapeutic strategies.
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Affiliation(s)
- Indong Jun
- Environmental Safety Group, Korea Institute of Science & Technology Europe (KIST-EUROPE), Saarbrücken, 66123, Germany
| | - Na Li
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, 02841, Republic of Korea
| | - Jaehee Shin
- Department of Medical Sciences, Graduate School of Medicine, Korea University, Seoul, 02841, Republic of Korea
| | - Jaeho Park
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science & Technology (KIST), Seoul, 02792, Republic of Korea
| | - Young Jun Kim
- Environmental Safety Group, Korea Institute of Science & Technology Europe (KIST-EUROPE), Saarbrücken, 66123, Germany
| | - Hojeong Jeon
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science & Technology (KIST), Seoul, 02792, Republic of Korea
| | - Hyuk Choi
- Department of Medical Sciences, Graduate School of Medicine, Korea University, Seoul, 02841, Republic of Korea
| | - Jae-Gu Cho
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, 02841, Republic of Korea
| | - Byoung Chan Choi
- Laser Surface Texturing Group, AYECLUS, Gyeonggi-do, 14255, Republic of Korea
| | - Hyung-Seop Han
- Center for Biomaterials, Biomedical Research Institute, Korea Institute of Science & Technology (KIST), Seoul, 02792, Republic of Korea
| | - Jae-Jun Song
- Department of Otorhinolaryngology-Head and Neck Surgery, Korea University College of Medicine, Seoul, 02841, Republic of Korea
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Tan XC, Xu JD, Jian JM, Dun GH, Cui TR, Yang Y, Ren TL. Programmable Sensitivity Screening of Strain Sensors by Local Electrical and Mechanical Properties Coupling. ACS NANO 2021; 15:20590-20599. [PMID: 34859997 DOI: 10.1021/acsnano.1c09288] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Owing to the canonical trade-off between the gauge factor and the working range, there is an emergent need for strain sensors with customizable sensitivity for various applications of different deformation ranges. However, current optimization strategies typically allow possessing either, not both, high-sensing performance or customizable sensing performance. Here, a laser-programmed heterogeneous strain sensor featured locally coupled electrical and mechanical properties (named an LCoup sensor) is developed to access customized sensor performance. Coupled electromechanical properties enable the applied strain to be mainly experienced by the higher sensitivity regions when stretched. By optimizing the parameters of laser processes, the gauge factor can systematically screen within 2 orders of magnitude (from 7.8 to 266.6) while maintaining good stretchability (50%). To prove the potential in human-machine interaction, the real-time monitoring and recognition of set hand gestures (left-click, right-click, and double-click) are demonstrated, representing the traditional input patterns of the computer mouse. Multiscale programming of material properties can further achieve excellent and tailored device performances, offering more opportunities for the design of a broad range of flexible electronics.
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Affiliation(s)
- Xi-Chao Tan
- School of Integrated Circuits and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
| | - Jian-Dong Xu
- School of Integrated Circuits and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
| | - Jin-Ming Jian
- School of Integrated Circuits and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
| | - Guan-Hua Dun
- School of Integrated Circuits and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
| | - Tian-Rui Cui
- School of Integrated Circuits and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
| | - Yi Yang
- School of Integrated Circuits and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
| | - Tian-Ling Ren
- School of Integrated Circuits and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China
- Center for Flexible Electronics Technology, Tsinghua University, Beijing 100084, P.R. China
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5
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Korotcenkov G. Electrospun Metal Oxide Nanofibers and Their Conductometric Gas Sensor Application. Part 2: Gas Sensors and Their Advantages and Limitations. NANOMATERIALS 2021; 11:nano11061555. [PMID: 34204655 PMCID: PMC8231294 DOI: 10.3390/nano11061555] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/07/2021] [Revised: 06/07/2021] [Accepted: 06/08/2021] [Indexed: 01/09/2023]
Abstract
Electrospun metal oxide nanofibers, due to their unique structural and electrical properties, are now being considered as materials with great potential for gas sensor applications. This critical review attempts to assess the feasibility of these perspectives. This article discusses approaches to the manufacture of nanofiber-based gas sensors, as well as the results of analysis of the performances of these sensors. A detailed analysis of the disadvantages that can limit the use of electrospinning technology in the development of gas sensors is also presented in this article. It also proposes some approaches to solving problems that limit the use of nanofiber-based gas sensors. Finally, the summary provides an insight into the future prospects of electrospinning technology for the development of gas sensors aimed for the gas sensor market.
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Affiliation(s)
- Ghenadii Korotcenkov
- Department of Theoretical Physics, Moldova State University, 2009 Chisinau, Moldova
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6
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Cai Z, Fan L, Wang H, Lamon S, Alexander SE, Lin T, Edwards SL. Constructing 3D Macroporous Microfibrous Scaffolds with a Featured Surface by Heat Welding and Embossing. Biomacromolecules 2021; 22:1867-1874. [PMID: 33881832 DOI: 10.1021/acs.biomac.0c01654] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Three-dimensional (3D) microfibrous scaffolds hold great promise for biomedical applications due to their good mechanical properties and biomimetic structure similar to that of the fibrous natural extracellular matrix. However, the large diameter and smooth surface of microfibers provide limited cues for regulating cell activity and behaviors. In this work, we report a facile heat-welding-and-embossing strategy to develop 3D macroporous microfibrous scaffolds with a featured surface topography. Here, solid monosodium glutamate (MSG) particles with crystalline ridge-like surface features play a key role as templates in both the formation of scaffold pores and the surface embossing of scaffold fibers when short thermoplastic polypropylene microfibers were heat-welded. The embossing process can be programmed by adjusting heating temperatures and MSG/fiber ratios. Compared to traditional 3D microfibrous scaffolds, the as-welded 3D scaffolds show higher compressive strength and modulus. Taking mouse C2C12 myoblasts as a model cell line, the scaffolds with embossed surface features significantly promoted the growth of cells, interactions of cells and scaffolds, and formation of myotubes. The findings indicate that the as-prepared 3D scaffolds are a good platform for cell culture study. The facile strategy can be applied to fabricate different fibrous scaffolds by changing the combination of templates and thermoplastic polymer fibers with a melting temperature lower than that of the template. The obtained insights in this work could provide a guide and inspiration for the design and fabrication of functional 3D fibrous scaffolds.
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Affiliation(s)
- Zengxiao Cai
- Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia.,CSIRO Manufacturing, Geelong Technology Precinct, Geelong, Victoria 3216, Australia
| | - Linpeng Fan
- Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia
| | - Hongxia Wang
- Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia
| | - Séverine Lamon
- Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Geelong, Victoria 3216, Australia
| | - Sarah Elizabeth Alexander
- Institute for Physical Activity and Nutrition (IPAN), School of Exercise and Nutrition Sciences, Deakin University, Geelong, Victoria 3216, Australia
| | - Tong Lin
- Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia
| | - Sharon L Edwards
- CSIRO Manufacturing, Geelong Technology Precinct, Geelong, Victoria 3216, Australia
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7
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Biazar E, Kamalvand M, Avani F. Recent advances in surface modification of biopolymeric nanofibrous scaffolds. INT J POLYM MATER PO 2021. [DOI: 10.1080/00914037.2020.1857383] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Affiliation(s)
- Esmaeil Biazar
- Department of Biomaterials Engineering, Tonekabon Branch, Islamic Azad University, Tonekabon, Iran
| | - Mahshad Kamalvand
- Department of Biomaterials Engineering, Tonekabon Branch, Islamic Azad University, Tonekabon, Iran
| | - Farzaneh Avani
- Biomedical Engineering Faculty, Amirkabir University of Technology (Tehran Polytechnic), Tehran, Iran
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8
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Seo Y, Kim S, Lee HS, Park J, Lee K, Jun I, Seo H, Kim YJ, Yoo Y, Choi BC, Seok HK, Kim YC, Ok MR, Choi J, Joo CK, Jeon H. Femtosecond laser induced nano-textured micropatterning to regulate cell functions on implanted biomaterials. Acta Biomater 2020; 116:138-148. [PMID: 32890750 DOI: 10.1016/j.actbio.2020.08.044] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 08/26/2020] [Accepted: 08/27/2020] [Indexed: 12/15/2022]
Abstract
Posterior capsular opacification (PCO) is the most common complication of cataract surgery. PCO is due to the proliferation, migration, and epithelial-to-mesenchymal transition of the residual lens epithelial cells (LECs) within the lens capsule. As surface topography influences cellular response, we investigated the effect of modulating the dimensions of periodic nano-textured patterns on the surface of an intraocular lens material to regulate lens epithelial cell functions such as cell adhesion, migration, orientation, and proliferation. Patterned poly(HEMA) samples were prepared by a femtosecond laser microfabrication, and the behaviors of human B-3 LECs were observed on groove/ridge patterns with widths varying from 5 to 40 µm. In the presence of ridge and groove patterns, the adherent cells elongated along the direction of the patterns, and f-actin of the cells was spread to a lesser extent on the nano-textured groove surfaces. Both single and collective cell migrations were significantly inhibited in the perpendicular direction of the patterns on the nano-textured micro-patterned samples. We also fabricated the patterns on the curved surface of a commercially available intraocular lens for in vivo evaluation. In vivo results showed that a patterned IOL could help suppress the progression of PCO by inhibiting cell migration from the edge to the center of the IOL. Our reports demonstrate that nano- and microscale topographical patterns on a biomaterial surface can regulate cellular behavior when it is implanted into animals.
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Affiliation(s)
- Youngmin Seo
- Center for Biomaterials, Korea Institute of Science & Technology, Seoul 02792, Republic of Korea
| | - Saeromi Kim
- Center for Biomaterials, Korea Institute of Science & Technology, Seoul 02792, Republic of Korea
| | - Hyun Soo Lee
- Catholic Institute of Visual Science, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea; Department of Ophthalmology, Catholic Institute for Visual Science, Seoul St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul 06591, Republic of Korea
| | - Jaeho Park
- Center for Biomaterials, Korea Institute of Science & Technology, Seoul 02792, Republic of Korea
| | - Kyungwoo Lee
- Center for Biomaterials, Korea Institute of Science & Technology, Seoul 02792, Republic of Korea; School of Integrative Engineering, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Indong Jun
- Environmental Safety Group, Korea Institute of Science and Technology Europe Forschungsgesellschaft mbH, Saarbrucken 66123, Germany
| | - Hyunseon Seo
- Center for Biomaterials, Korea Institute of Science & Technology, Seoul 02792, Republic of Korea
| | - Young Jin Kim
- Public Problem Research Team, National Institute of Mathematical and Sciences, Daejeon 34037, Republic of Korea
| | - Youngsik Yoo
- Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul 06351, Republic of Korea
| | | | - Hyun-Kwang Seok
- Center for Biomaterials, Korea Institute of Science & Technology, Seoul 02792, Republic of Korea; Division of Bio-Medical Science and Technology, Korea Institute of Science and Technology School, Korea University of Science and Technology, Seoul 02792, Republic of Korea
| | - Yu-Chan Kim
- Center for Biomaterials, Korea Institute of Science & Technology, Seoul 02792, Republic of Korea; Division of Bio-Medical Science and Technology, Korea Institute of Science and Technology School, Korea University of Science and Technology, Seoul 02792, Republic of Korea
| | - Myoung-Ryul Ok
- Center for Biomaterials, Korea Institute of Science & Technology, Seoul 02792, Republic of Korea
| | - Jonghoon Choi
- School of Integrative Engineering, Chung-Ang University, Seoul 06974, Republic of Korea
| | - Choun-Ki Joo
- CK Saint Mary's Eye Center, Seoul 06531, Republic of Korea.
| | - Hojeong Jeon
- Center for Biomaterials, Korea Institute of Science & Technology, Seoul 02792, Republic of Korea; Division of Bio-Medical Science and Technology, Korea Institute of Science and Technology School, Korea University of Science and Technology, Seoul 02792, Republic of Korea.
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9
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Wu T, Xue J, Xia Y. Engraving the Surface of Electrospun Microfibers with Nanoscale Grooves Promotes the Outgrowth of Neurites and the Migration of Schwann Cells. Angew Chem Int Ed Engl 2020; 59:15626-15632. [PMID: 32168409 PMCID: PMC7487060 DOI: 10.1002/anie.202002593] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 03/08/2020] [Indexed: 12/21/2022]
Abstract
We report a simple method based upon coaxial electrospinning for the fabrication of aligned microfibers engraved with nanoscale grooves to promote neurite outgrowth and cell migration. The success of this method relies on the immiscibility between poly(ϵ-caprolactone) (PCL) and poly(vinyl pyrrolidone) (PVP) in 2,2,2-trifluoroethanol (TFE) for the generation of PVP/TFE pockets on the surface of a PCL jet. The pockets are stretched and elongated along with the jet, eventually resulting in the formation of nanoscale grooves upon the removal of PVP. The presence of nanoscale grooves greatly enhances the outgrowth of neurites from both PC12 cells and chick embryonic dorsal root ganglia (DRG) bodies, as well as the migration of Schwann cells. The enhancements can be maximized by optimizing the dimensions of the grooves for potential use in applications involving neurite extension and wound closure.
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Affiliation(s)
- Tong Wu
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332, USA
| | - Jiajia Xue
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332, USA
| | - Younan Xia
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, GA 30332, USA
- School of Chemistry and Biochemistry, School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, GA 30332, USA
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10
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Abstract
Self-cleaning surfaces may have wide applications such as microfluidic devices, lab-on-a-chip, sensors, microreactors, air purification, and antimicrobial fields. In this article, by using a combination of femtosecond (fs) laser irradiation and fluorination technique, self-cleaning stainless steel surfaces with unique antifouling property were obtained. New insight is developed through a detailed analysis of the antifouling behavior of the self-cleaning surfaces. The surface free energy and its polar and disperse components were calculated by using the Owens–Wendt-–Rabel–Kaelble (OWRK) method. X-ray photoelectron spectroscopy was employed to analyse the surface elemental compositions and functional groups. The antifouling property of the surface was recorded by using a high speed camera. Water sliding angles (SAs) were reduced by fluorination treatment, resulting in low adhesive superhydrophobic surfaces with the self-cleaning property. The influences of micro/nanostructures, fluorination, and their combination on the surface free energy were investigated. The interaction process between water droplets and pollutants (inorganic and organic particles) on the treated surface was explored. The antifouling property of an optimized specimen (CA = 162° and SA = 1°) was tested and compared with the untreated sample.
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11
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Wang Z, Cui W. Two Sides of Electrospun Fiber in Promoting and Inhibiting Biomedical Processes. ADVANCED THERAPEUTICS 2020. [DOI: 10.1002/adtp.202000096] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Zhen Wang
- Shanghai Institute of Traumatology and Orthopaedics Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases Ruijin Hospital Shanghai Jiao Tong University School of Medicine 197 Ruijin 2nd Road Shanghai 200025 P. R. China
| | - Wenguo Cui
- Shanghai Institute of Traumatology and Orthopaedics Shanghai Key Laboratory for Prevention and Treatment of Bone and Joint Diseases Ruijin Hospital Shanghai Jiao Tong University School of Medicine 197 Ruijin 2nd Road Shanghai 200025 P. R. China
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12
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Yang W, Sun L, Cai S, Chen Y, Liang W, Zhou P, Yu H, Wang Y, Liu L. Dynamically directing cell organization via micro-hump structure patterned cell-adhered interfaces. LAB ON A CHIP 2020; 20:2447-2452. [PMID: 32542258 DOI: 10.1039/d0lc00477d] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Cell adhesion plays an important role in cell communication, organ formation and tissue maintenance. Spatial microstructure patterning has the capability to regulate cell functions such as cell adhesion and cell proliferation as well as cellular mechanical properties. In this study, we present a simple method to fabricate micro-hump patterned interfaces based on electrohydrodynamic jet (E-jet) printing to control and direct cell organization. Micro-hump structures were rapidly fabricated by E-jet printing and arbitrary cell patterns can be achieved by selective cell adhesion induced by this surface topography. Furthermore, cellular mechanical properties were regulated by changing the density of microstructures. The technique we proposed could dynamically direct cell organization in a controlled manner, providing help for exploring the fundamental mechanism of cell adhesion and sensing.
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Affiliation(s)
- Wenguang Yang
- School of Electromechanical and Automotive Engineering, Yantai University, China.
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13
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Wu T, Xue J, Xia Y. Engraving the Surface of Electrospun Microfibers with Nanoscale Grooves Promotes the Outgrowth of Neurites and the Migration of Schwann Cells. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202002593] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Tong Wu
- The Wallace H. Coulter Department of Biomedical Engineering Georgia Institute of Technology and Emory University Atlanta GA 30332 USA
| | - Jiajia Xue
- The Wallace H. Coulter Department of Biomedical Engineering Georgia Institute of Technology and Emory University Atlanta GA 30332 USA
| | - Younan Xia
- The Wallace H. Coulter Department of Biomedical Engineering Georgia Institute of Technology and Emory University Atlanta GA 30332 USA
- School of Chemistry and Biochemistry School of Chemical and Biomolecular Engineering Georgia Institute of Technology Atlanta GA 30332 USA
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14
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Xu W, Yi P, Gao J, Deng Y, Peng L, Lai X. Large-Area Stable Superhydrophobic Poly(dimethylsiloxane) Films Fabricated by Thermal Curing via a Chemically Etched Template. ACS APPLIED MATERIALS & INTERFACES 2020; 12:3042-3050. [PMID: 31860263 DOI: 10.1021/acsami.9b19677] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Inspired by nature, large-area stable superhydrophobic poly(dimethylsiloxane) (PDMS) films have generated extensive interest for various applications such as self-cleaning, corrosion protection, liquid transport, optical services, and flexible electronics. However, the current methods used to prepare such films are difficult to apply for efficient large-area fabrication. In this article, an effective technique for fabricating low adhesive superhydrophobic films based on the use of a chemically etched template followed by a thermal curing process is introduced. On the basis of this approach, the importance of chemical solution concentration as well as etching time is discussed to outline the specific rules required for forming different surface topographies of the templates. Then, PDMS films with varying wettabilities can be fabricated in which one can achieve CA > 160° and SA < 10°. Finally, for engineering needs and actual preparation, large-area PDMS films are obtained via a roll-to-roll (R2R) process, which show a superhydrophobic property even after high-intensity friction and have excellent acid and alkaline resistance, UV resistance, and optical transparency. The prepared large-area stable superhydrophobic PDMS films have the potential to be used in the aerospace field in the future because of their excellent anti-icing performance.
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Affiliation(s)
- Weitian Xu
- State Key Laboratory of Mechanical System and Vibration and Shanghai Key Laboratory of Digital Manufacture for Thin-Walled Structures , Shanghai Jiao Tong University , Shanghai 200240 , P. R. China
| | - Peiyun Yi
- State Key Laboratory of Mechanical System and Vibration and Shanghai Key Laboratory of Digital Manufacture for Thin-Walled Structures , Shanghai Jiao Tong University , Shanghai 200240 , P. R. China
| | - Jie Gao
- State Key Laboratory of Mechanical System and Vibration and Shanghai Key Laboratory of Digital Manufacture for Thin-Walled Structures , Shanghai Jiao Tong University , Shanghai 200240 , P. R. China
| | - Yujun Deng
- State Key Laboratory of Mechanical System and Vibration and Shanghai Key Laboratory of Digital Manufacture for Thin-Walled Structures , Shanghai Jiao Tong University , Shanghai 200240 , P. R. China
| | - Linfa Peng
- State Key Laboratory of Mechanical System and Vibration and Shanghai Key Laboratory of Digital Manufacture for Thin-Walled Structures , Shanghai Jiao Tong University , Shanghai 200240 , P. R. China
| | - Xinmin Lai
- State Key Laboratory of Mechanical System and Vibration and Shanghai Key Laboratory of Digital Manufacture for Thin-Walled Structures , Shanghai Jiao Tong University , Shanghai 200240 , P. R. China
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Shin YM, Yang HS, Chun HJ. Directional Cell Migration Guide for Improved Tissue Regeneration. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2020; 1249:131-140. [DOI: 10.1007/978-981-15-3258-0_9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/04/2022]
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16
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Gong HY, Park J, Kim W, Kim J, Lee JY, Koh WG. A Novel Conductive and Micropatterned PEG-Based Hydrogel Enabling the Topographical and Electrical Stimulation of Myoblasts. ACS APPLIED MATERIALS & INTERFACES 2019; 11:47695-47706. [PMID: 31794187 DOI: 10.1021/acsami.9b16005] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
In this study, we designed a cell-adhesive poly(ethylene glycol) (PEG)-based hydrogel that simultaneously provides topographical and electrical stimuli to C2C12 myoblasts. Specifically, PEG hydrogels with microgroove structures of 3 μm ridges and 3 μm grooves were prepared by micromolding; in situ polymerization of poly(3,4-ethylenedioxythiophene) (PEDOT) was then performed within the micropatterned PEG hydrogels to create a microgrooved conductive hydrogel (CH/P). The CH/P had clear replica patterns of the silicone mold and a conductivity of 2.49 × 10-3 S/cm, with greater than 85% water content. In addition, the CH exhibited Young's modulus (45.84 ± 7.12 kPa) similar to that of a muscle tissue. The surface of the CH/P was further modified via covalent bonding with cell-adhesive peptides to facilitate cell adhesion without affecting conductivity. An in vitro cell assay revealed that the CH/P was cytocompatible and enhanced the cell alignment and elongation of C2C12 myoblasts. The microgrooves and conductivity of the CH/P had the greatest positive effect on the myogenesis of C2C12 myoblasts compared to the other PEG hydrogel samples without conductivity or/and microgrooves, even in the absence of electrical stimulation. Electrical stimulation studies indicated that the combination of topographical and electrical cues maximized the differentiation of C2C12 myoblasts into myotubes, confirming the synergetic effect of incorporating microgroove surface features and a conductive PEDOT component into hydrogels.
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Affiliation(s)
| | - Junggeon Park
- School of Materials Science and Engineering , Gwangju Institute of Science and Technology (GIST) , Gwangju 61105 , South Korea
| | | | | | - Jae Young Lee
- School of Materials Science and Engineering , Gwangju Institute of Science and Technology (GIST) , Gwangju 61105 , South Korea
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Abstract
Electrospinning is a versatile and viable technique for generating ultrathin fibers. Remarkable progress has been made with regard to the development of electrospinning methods and engineering of electrospun nanofibers to suit or enable various applications. We aim to provide a comprehensive overview of electrospinning, including the principle, methods, materials, and applications. We begin with a brief introduction to the early history of electrospinning, followed by discussion of its principle and typical apparatus. We then discuss its renaissance over the past two decades as a powerful technology for the production of nanofibers with diversified compositions, structures, and properties. Afterward, we discuss the applications of electrospun nanofibers, including their use as "smart" mats, filtration membranes, catalytic supports, energy harvesting/conversion/storage components, and photonic and electronic devices, as well as biomedical scaffolds. We highlight the most relevant and recent advances related to the applications of electrospun nanofibers by focusing on the most representative examples. We also offer perspectives on the challenges, opportunities, and new directions for future development. At the end, we discuss approaches to the scale-up production of electrospun nanofibers and briefly discuss various types of commercial products based on electrospun nanofibers that have found widespread use in our everyday life.
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Affiliation(s)
- Jiajia Xue
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
| | - Tong Wu
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
| | - Yunqian Dai
- School of Chemistry and Chemical Engineering, Southeast University, Nanjing, Jiangsu 211189, People’s Republic of China
| | - Younan Xia
- The Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Georgia 30332, United States
- School of Chemistry and Biochemistry, School of Chemical and Biomolecular Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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Rega R, Gennari O, Mecozzi L, Pagliarulo V, Bramanti A, Ferraro P, Grilli S. Maskless Arrayed Nanofiber Mats by Bipolar Pyroelectrospinning. ACS APPLIED MATERIALS & INTERFACES 2019; 11:3382-3387. [PMID: 30609347 DOI: 10.1021/acsami.8b12513] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The numerous advantages of micro- and nanostructures produced by electrospinning (ES) have stimulated enormous interest in this technology with potential application in several fields. However, ES still has some limitations in controlling the geometrical arrangement of the fiber mats so that expensive and time-consuming technologies are usually employed for producing ordered geometries. Here we present a technique that we call "bipolar pyroelectrospinning" (b-PES) for generating ordered arrays of fiber mats in a direct manner by using the bipolar pyroelectric field produced by a periodically poled lithium niobate crystal (PPLN). The b-PES is free from expensive electrodes, nozzles, and masks because it makes use simply of the structured pyroelectric field produced by the PPLN crystal used as collector. The results show clearly the reliability of the technique in producing a wide variety of arrayed fiber mats that could find application in bioengineering or many other fields. Preliminary results of live cells patterning under controlled geometrical constraints is also reported and discussed in order to show potential exploitation as a scaffold in tissue engineering.
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Affiliation(s)
- Romina Rega
- National Research Council (CNR) , Institute of Applied Sciences & Intelligent Systems (ISASI) 'E. Caianiello' , Via Campi Flegrei 34 , 80078 Pozzuoli ( NA ), Italy
| | - Oriella Gennari
- National Research Council (CNR) , Institute of Applied Sciences & Intelligent Systems (ISASI) 'E. Caianiello' , Via Campi Flegrei 34 , 80078 Pozzuoli ( NA ), Italy
| | - Laura Mecozzi
- National Research Council (CNR) , Institute of Applied Sciences & Intelligent Systems (ISASI) 'E. Caianiello' , Via Campi Flegrei 34 , 80078 Pozzuoli ( NA ), Italy
| | - Vito Pagliarulo
- National Research Council (CNR) , Institute of Applied Sciences & Intelligent Systems (ISASI) 'E. Caianiello' , Via Campi Flegrei 34 , 80078 Pozzuoli ( NA ), Italy
| | - Alessia Bramanti
- National Research Council (CNR) , Institute of Applied Sciences & Intelligent Systems (ISASI) 'E. Caianiello' , Via Campi Flegrei 34 , 80078 Pozzuoli ( NA ), Italy
- IRCCS Centro Neurolesi "Bonino-Pulejo" , Contrada Casazza SS113 , 98124 Messina , Italy
| | - Pietro Ferraro
- National Research Council (CNR) , Institute of Applied Sciences & Intelligent Systems (ISASI) 'E. Caianiello' , Via Campi Flegrei 34 , 80078 Pozzuoli ( NA ), Italy
| | - Simonetta Grilli
- National Research Council (CNR) , Institute of Applied Sciences & Intelligent Systems (ISASI) 'E. Caianiello' , Via Campi Flegrei 34 , 80078 Pozzuoli ( NA ), Italy
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Denchai A, Tartarini D, Mele E. Cellular Response to Surface Morphology: Electrospinning and Computational Modeling. Front Bioeng Biotechnol 2018; 6:155. [PMID: 30406098 PMCID: PMC6207584 DOI: 10.3389/fbioe.2018.00155] [Citation(s) in RCA: 48] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2018] [Accepted: 10/08/2018] [Indexed: 12/16/2022] Open
Abstract
Surface properties of biomaterials, such as chemistry and morphology, have a major role in modulating cellular behavior and therefore impact on the development of high-performance devices for biomedical applications, such as scaffolds for tissue engineering and systems for drug delivery. Opportunely-designed micro- and nanostructures provides a unique way of controlling cell-biomaterial interaction. This mini-review discusses the current research on the use of electrospinning (extrusion of polymer nanofibers upon the application of an electric field) as effective technique to fabricate patterns of micro- and nano-scale resolution, and the corresponding biological studies. The focus is on the effect of morphological cues, including fiber alignment, porosity and surface roughness of electrospun mats, to direct cell migration and to influence cell adhesion, differentiation and proliferation. Experimental studies are combined with computational models that predict and correlate the surface composition of a biomaterial with the response of cells in contact with it. The use of predictive models can facilitate the rational design of new bio-interfaces.
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Affiliation(s)
- Anna Denchai
- Department of Materials, Loughborough University, Loughborough, United Kingdom
| | - Daniele Tartarini
- Department of Civil Engineering, University of Sheffield, Sheffield, United Kingdom
| | - Elisa Mele
- Department of Materials, Loughborough University, Loughborough, United Kingdom
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20
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Kim BJ, Park M, Park JH, Joo S, Kim MH, Kang K, Choi IS. Pioneering Effects and Enhanced Neurite Complexity of Primary Hippocampal Neurons on Hierarchical Neurotemplated Scaffolds. Adv Healthc Mater 2018; 7:e1800289. [PMID: 30088694 DOI: 10.1002/adhm.201800289] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 05/27/2018] [Indexed: 12/14/2022]
Abstract
In this work, the use of scaffolds is reported, templated from live neurons as an advanced culture platform for primary neurons. Hippocampal neurons cultured on neurotemplated scaffolds exhibit an affinity for templated somas, revealing a preference for micrometric structures amidst nanotopographical features. It is also reported, for the first time, that neurite complexity can be topographically controlled by increasing the density of nanometric features on neurotemplated scaffolds. Neurotemplated scaffolds are versatile, hierarchical topographies that feature biologically relevant structures, in both form and scale, and capture the true complexity of an in vivo environment. The introduction and implementation of neurotemplated scaffolds is sure to advance research in the fields of neurodevelopment, network development, and neuroregeneration.
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Affiliation(s)
- Beom Jin Kim
- Center for Cell-Encapsulation Research; Department of Chemistry; KAIST; Daejeon 34141 Republic of Korea
| | - Matthew Park
- Center for Cell-Encapsulation Research; Department of Chemistry; KAIST; Daejeon 34141 Republic of Korea
| | - Ji Hun Park
- Department of Science Education; Ewha Womans University; Seoul 03760 Republic of Korea
| | - Sunghoon Joo
- Center for Cell-Encapsulation Research; Department of Chemistry; KAIST; Daejeon 34141 Republic of Korea
| | - Mi-Hee Kim
- Center for Cell-Encapsulation Research; Department of Chemistry; KAIST; Daejeon 34141 Republic of Korea
| | - Kyungtae Kang
- Department of Applied Chemistry; Kyung Hee University; Yongin Gyeonggi 17104 Republic of Korea
| | - Insung S. Choi
- Center for Cell-Encapsulation Research; Department of Chemistry; KAIST; Daejeon 34141 Republic of Korea
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Arefin A, Mcculloch Q, Martinez R, Martin SA, Singh R, Ishak OM, Higgins EM, Haffey KE, Huang JH, Iyer S, Nath P, Iyer R, Harris JF. Micromachining of Polyurethane Membranes for Tissue Engineering Applications. ACS Biomater Sci Eng 2018; 4:3522-3533. [DOI: 10.1021/acsbiomaterials.8b00578] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Ayesha Arefin
- Nanoscience and Microsystems Department, University of New Mexico, MSC01 1120, 1 University of New Mexico, Albuquerque, New Mexico 87131, United States
- Bioscience Division, Los Alamos National Laboratory, P.O. Box 1663 MS M888, Los Alamos, New Mexico 87545, United States
| | - Quinn Mcculloch
- Nanoscience and Microsystems Department, University of New Mexico, MSC01 1120, 1 University of New Mexico, Albuquerque, New Mexico 87131, United States
- MPA-CINT: Center for Integrated Nanotechnologies, Los Alamos National Laboratory, P.O.
Box 1663 MS K771, Los Alamos, New Mexico 87545, United States
| | - Ricardo Martinez
- MPA-CINT: Center for Integrated Nanotechnologies, Los Alamos National Laboratory, P.O.
Box 1663 MS K771, Los Alamos, New Mexico 87545, United States
| | - Simona A. Martin
- Bioscience Division, Los Alamos National Laboratory, P.O. Box 1663 MS M888, Los Alamos, New Mexico 87545, United States
| | - Rohan Singh
- C-PCS: Physical Chemistry & Applied Spectroscopy, Los Alamos National Laboratory, P.O. Box 1663 MS J567, Los Alamos, New Mexico 87545, United States
| | - Omar M. Ishak
- Bioscience Division, Los Alamos National Laboratory, P.O. Box 1663 MS M888, Los Alamos, New Mexico 87545, United States
| | - Erin M. Higgins
- Applied Modern Physics Division, Los Alamos National Laboratory, P.O. Box 1663 MS D454, Los Alamos, New Mexico 87545, United States
| | - Kiersten E. Haffey
- Applied Modern Physics Division, Los Alamos National Laboratory, P.O. Box 1663 MS D454, Los Alamos, New Mexico 87545, United States
| | - Jen-Huang Huang
- Bioscience Division, Los Alamos National Laboratory, P.O. Box 1663 MS M888, Los Alamos, New Mexico 87545, United States
| | - Srinivas Iyer
- Bioscience Division, Los Alamos National Laboratory, P.O. Box 1663 MS M888, Los Alamos, New Mexico 87545, United States
| | - Pulak Nath
- Applied Modern Physics Division, Los Alamos National Laboratory, P.O. Box 1663 MS D454, Los Alamos, New Mexico 87545, United States
| | - Rashi Iyer
- Systems Analysis and Surveillance Division, Los Alamos National Laboratory, P.O. Box
1663 MS C921, Los Alamos, New Mexico 87545, United States
| | - Jennifer F. Harris
- Bioscience Division, Los Alamos National Laboratory, P.O. Box 1663 MS M888, Los Alamos, New Mexico 87545, United States
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23
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Chen S, Li R, Li X, Xie J. Electrospinning: An enabling nanotechnology platform for drug delivery and regenerative medicine. Adv Drug Deliv Rev 2018; 132:188-213. [PMID: 29729295 DOI: 10.1016/j.addr.2018.05.001] [Citation(s) in RCA: 201] [Impact Index Per Article: 33.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2018] [Revised: 04/03/2018] [Accepted: 05/01/2018] [Indexed: 02/06/2023]
Abstract
Electrospinning provides an enabling nanotechnology platform for generating a rich variety of novel structured materials in many biomedical applications including drug delivery, biosensing, tissue engineering, and regenerative medicine. In this review article, we begin with a thorough discussion on the method of producing 1D, 2D, and 3D electrospun nanofiber materials. In particular, we emphasize on how the 3D printing technology can contribute to the improvement of traditional electrospinning technology for the fabrication of 3D electrospun nanofiber materials as drug delivery devices/implants, scaffolds or living tissue constructs. We then highlight several notable examples of electrospun nanofiber materials in specific biomedical applications including cancer therapy, guiding cellular responses, engineering in vitro 3D tissue models, and tissue regeneration. Finally, we finish with conclusions and future perspectives of electrospun nanofiber materials for drug delivery and regenerative medicine.
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Jun I, Kim K, Chung YW, Shin HJ, Han HS, Edwards JR, Ok MR, Kim YC, Seok HK, Shin H, Jeon H. Effect of spatial arrangement and structure of hierarchically patterned fibrous scaffolds generated by a femtosecond laser on cardiomyoblast behavior. J Biomed Mater Res A 2018; 106:1732-1742. [DOI: 10.1002/jbm.a.36374] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Revised: 02/09/2018] [Accepted: 02/14/2018] [Indexed: 12/16/2022]
Affiliation(s)
- Indong Jun
- Center for Biomaterials; Korea Institute of Science and Technology (KIST); Seoul 02792 Republic of Korea
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences (NDORMS); University of Oxford; Oxford OX3 7LD United Kingdom
| | - Kyeongsoo Kim
- Center for Biomaterials; Korea Institute of Science and Technology (KIST); Seoul 02792 Republic of Korea
| | - Yong-Woo Chung
- Center for Biomaterials; Korea Institute of Science and Technology (KIST); Seoul 02792 Republic of Korea
| | - Hyeok Jun Shin
- Department of Bioengineering; Hanyang University; Seoul 04763 Republic of Korea
| | - Hyung-Seop Han
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences (NDORMS); University of Oxford; Oxford OX3 7LD United Kingdom
| | - James R. Edwards
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences (NDORMS); University of Oxford; Oxford OX3 7LD United Kingdom
| | - Myoung-Ryul Ok
- Center for Biomaterials; Korea Institute of Science and Technology (KIST); Seoul 02792 Republic of Korea
| | - Yu-Chan Kim
- Center for Biomaterials; Korea Institute of Science and Technology (KIST); Seoul 02792 Republic of Korea
- Division of Bio-Medical Science and Technology; KIST School, Korea University of Science and Technology; Seoul 02792 Republic of Korea
| | - Hyun-Kwang Seok
- Center for Biomaterials; Korea Institute of Science and Technology (KIST); Seoul 02792 Republic of Korea
- Division of Bio-Medical Science and Technology; KIST School, Korea University of Science and Technology; Seoul 02792 Republic of Korea
| | - Heungsoo Shin
- Department of Bioengineering; Hanyang University; Seoul 04763 Republic of Korea
| | - Hojeong Jeon
- Center for Biomaterials; Korea Institute of Science and Technology (KIST); Seoul 02792 Republic of Korea
- Division of Bio-Medical Science and Technology; KIST School, Korea University of Science and Technology; Seoul 02792 Republic of Korea
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Jun I, Han HS, Edwards JR, Jeon H. Electrospun Fibrous Scaffolds for Tissue Engineering: Viewpoints on Architecture and Fabrication. Int J Mol Sci 2018; 19:E745. [PMID: 29509688 PMCID: PMC5877606 DOI: 10.3390/ijms19030745] [Citation(s) in RCA: 247] [Impact Index Per Article: 41.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 02/26/2018] [Accepted: 03/03/2018] [Indexed: 12/23/2022] Open
Abstract
Electrospinning has been used for the fabrication of extracellular matrix (ECM)-mimicking fibrous scaffolds for several decades. Electrospun fibrous scaffolds provide nanoscale/microscale fibrous structures with interconnecting pores, resembling natural ECM in tissues, and showing a high potential to facilitate the formation of artificial functional tissues. In this review, we summarize the fundamental principles of electrospinning processes for generating complex fibrous scaffold geometries that are similar in structural complexity to the ECM of living tissues. Moreover, several approaches for the formation of three-dimensional fibrous scaffolds arranged in hierarchical structures for tissue engineering are also presented.
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Affiliation(s)
- Indong Jun
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences (NDORMS), University of Oxford, Oxford OX3 7LD, UK.
| | - Hyung-Seop Han
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences (NDORMS), University of Oxford, Oxford OX3 7LD, UK.
- Center for Biomaterials, Korea Institute of Science & Technology (KIST), Seoul 02792, Korea.
| | - James R Edwards
- Botnar Research Centre, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences (NDORMS), University of Oxford, Oxford OX3 7LD, UK.
| | - Hojeong Jeon
- Center for Biomaterials, Korea Institute of Science & Technology (KIST), Seoul 02792, Korea.
- Division of Bio-Medical Science & Technology, KIST School, Korea University of Science and Technology, Seoul 02792, Korea.
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26
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Zhang J, Sun Y, Zhao Y, Wei B, Xu C, He L, Oliveira CLP, Wang H. Centrifugation-induced fibrous orientation in fish-sourced collagen matrices. SOFT MATTER 2017; 13:9220-9228. [PMID: 29199311 DOI: 10.1039/c7sm01871a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Orientation of fibrous collagen structures plays an important role not only in the native function of various biological tissues but also in the development of next-generation tissue engineering scaffolds. However, the controlled assembly of collagen in vitro into an anisotropic structure, avoiding complex technical procedures and specialized apparatus, remains a challenge. Here, an oriented collagen matrix was fabricated at the macroscale by simple centrifugation, and the aligned topographical features of the resulting collagen matrix were revealed by scanning electron microscopy (SEM), transmission electron microscopy (TEM), and small angle X-ray scattering. The aligned matrix exhibited a higher ultimate tensile strength and strain than a random matrix. Centrifugation had an impact on the diameter and density of the collagen fibrils, while it had no effect on their native D-periodicity and thermal stability. Additionally, structural anisotropy of the collagen matrix facilitated the proliferation and migration of NIH/3T3 fibroblasts, compared with the random one. This simple and cost-effective method could lead to mass production of aligned collagen matrices and future possibilities for different applications in tissue engineering.
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Affiliation(s)
- Juntao Zhang
- School of Chemical and Environmental Engineering, Wuhan Polytechnic University, Wuhan, Hubei, China.
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Shin YM, Shin HJ, Yang DH, Koh YJ, Shin H, Chun HJ. Advanced capability of radially aligned fibrous scaffolds coated with polydopamine for guiding directional migration of human mesenchymal stem cells. J Mater Chem B 2017; 5:8725-8737. [PMID: 32264266 DOI: 10.1039/c7tb01758h] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
In a large tissue defect, faster migration of adjacent tissue toward the defect shortens the tissue regeneration time. Little has been explored on guiding of directional migration from all fronts of the defect boundary towards the center in tissue engineering. This paper demonstrates the effect of radially aligned fibrous scaffolds (RAFSs) coated with polydopamine in order to guide directional migration of human mesenchymal stem cells (hMSCs). RAFSs were electrospun using a collector with a set of electrodes, each constructed with a metallic ring and a point. The polydopamine was then coated by dipping the scaffolds in a dopamine solution (PD-RAFS). The RAFSs exhibited radial distribution of the fibers from the peripheral region toward the center, and polydopamine was uniformly coated over the entire surface by presenting characteristics of the aromatic ring from dopamine. When hMSCs were seeded on the scaffolds, cells grew in an elongated form toward the center along the fiber direction. In particular, the polydopamine coating improved adhesion and spreading of hMSCs on the scaffolds while preserving initial cell orientation. The hMSCs migrated toward the center of the scaffolds at the border of the seeded area; it was enhanced in the order of PD-RAFS > RAFS > random fibrous scaffolds. Therefore, PD-RAFSs can be utilized as an alternate scaffold that can lead to fast and directional migration of cells for finally facilitating tissue regeneration.
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Affiliation(s)
- Young Min Shin
- Institute of Cell & Tissue Engineering, College of Medicine, The Catholic University of Korea, 222 Banpo-daero, Seocho-gu, Seoul, 06591, Republic of Korea.
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Taskin MB, Xia D, Besenbacher F, Dong M, Chen M. Nanotopography featured polycaprolactone/polyethyleneoxide microfibers modulate endothelial cell response. NANOSCALE 2017; 9:9218-9229. [PMID: 28654129 DOI: 10.1039/c7nr03326e] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Among many physical properties, surface nanotopography has been found to strongly affect cell adhesion, migration and other functions. Accurate biological interpretation requires the nanotopography to be presented in a three-dimensional (3D) micro-environment. Herein, immiscible blends of polycaprolactone (PCL)/polyethyleneoxide (PEO) were electrospun into a grounded coagulation bath, resulting in macroporous microfibers with nanotopography featured surfaces. Variations in PCL/PEO ratios enabled tunable surface nanotopographic structures, from longitudinal submicron grooves to transverse nano-lamellae. Chemical composition, crystallinity and quantitative nanomechanical analysis confirmed that the interplay of the two semi-crystalline immiscible polymers and the pairing of miscible solvents/non-solvents in both the electrospinning solution and the bath solution were critical for the formation of the secondary structure. It was found that the nanotopography features promoted the proliferation of human umbilical vein endothelial cells (HUVECs) compared with their smooth film counterparts. An analysis of the cell adhesion related markers, vinculin and phosphorylated focal adhesion kinase (pFAK), further revealed that the nanotopographies enhanced the nascent adhesion complex formation compared with smooth PCL fibers, even in the scaffolds with a high PEO content, which is often considered as a non-adhesive material.
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Affiliation(s)
- Mehmet Berat Taskin
- Interdisiplinary Nanoscience Center (iNANO), Aarhus University, DK-8000 Aarhus C, Denmark.
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Shin YM, Shin HJ, Heo Y, Jun I, Chung YW, Kim K, Lim YM, Jeon H, Shin H. Engineering an aligned endothelial monolayer on a topologically modified nanofibrous platform with a micropatterned structure produced by femtosecond laser ablation. J Mater Chem B 2017; 5:318-328. [DOI: 10.1039/c6tb02258h] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Laser ablated nanofibers with micropattern regulated adhesion and orientation of HUVEC and also contributed to generate an aligned endothelial monolayer.
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Affiliation(s)
- Young Min Shin
- Department of Bioengineering
- Hanyang University
- Seongdong-gu
- Republic of Korea
- Institute of Cell & Tissue Engineering
| | - Hyeok Jun Shin
- Department of Bioengineering
- Hanyang University
- Seongdong-gu
- Republic of Korea
- BK21 Plus Future Biopharmaceutical Human Resources Training and Research Team
| | - Yunhoe Heo
- Department of Bioengineering
- Hanyang University
- Seongdong-gu
- Republic of Korea
- BK21 Plus Future Biopharmaceutical Human Resources Training and Research Team
| | - Indong Jun
- Center for Biomaterials
- Biomedical Research Institute
- Korea Institute of Science and Technology (KIST)
- Seoul
- Republic of Korea
| | - Yong-Woo Chung
- Center for Biomaterials
- Biomedical Research Institute
- Korea Institute of Science and Technology (KIST)
- Seoul
- Republic of Korea
| | - Kyeongsoo Kim
- Department of Bioengineering
- Hanyang University
- Seongdong-gu
- Republic of Korea
- BK21 Plus Future Biopharmaceutical Human Resources Training and Research Team
| | - Youn Mook Lim
- Research Division for Industry and Environment
- Advanced Radiation Technology Institute
- Korea Atomic Energy Research Institute
- Jeongeup
- Republic of Korea
| | - Hojeong Jeon
- Center for Biomaterials
- Biomedical Research Institute
- Korea Institute of Science and Technology (KIST)
- Seoul
- Republic of Korea
| | - Heungsoo Shin
- Department of Bioengineering
- Hanyang University
- Seongdong-gu
- Republic of Korea
- BK21 Plus Future Biopharmaceutical Human Resources Training and Research Team
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Manabe K, Matsubayashi T, Tenjimbayashi M, Moriya T, Tsuge Y, Kyung KH, Shiratori S. Controllable Broadband Optical Transparency and Wettability Switching of Temperature-Activated Solid/Liquid-Infused Nanofibrous Membranes. ACS NANO 2016; 10:9387-9396. [PMID: 27662461 DOI: 10.1021/acsnano.6b04333] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Inspired by biointerfaces, such as the surfaces of lotus leaves and pitcher plants, researchers have developed innovative strategies for controlling surface wettability and transparency. In particular, great success has been achieved in obtaining low adhesion and high transmittance via the introduction of a liquid layer to form liquid-infused surfaces. Furthermore, smart surfaces that can change their surface properties according to external stimuli have recently attracted substantial interest. As some of the best-performing smart surface materials, slippery liquid-infused porous surfaces (SLIPSs), which are super-repellent, demonstrate the successful achievement of switchable adhesion and tunable transparency that can be controlled by a graded mechanical stimulus. However, despite considerable efforts, producing temperature-responsive, super-repellent surfaces at ambient temperature and pressure remains difficult because of the use of nonreactive lubricant oil as a building block in previously investigated repellent surfaces. Therefore, the present study focused on developing multifunctional materials that dynamically adapt to temperature changes. Here, we demonstrate temperature-activated solidifiable/liquid paraffin-infused porous surfaces (TA-SLIPSs) whose transparency and control of water droplet movement at room temperature can be simultaneously controlled. The solidification of the paraffin changes the surface morphology and the size of the light-transmission inhibitor in the lubricant layer; as a result, the control over the droplet movement and the light transmittance at different temperatures is dependent on the solidifiable/liquid paraffin mixing ratio. Further study of such temperature-responsive, multifunctional systems would be valuable for antifouling applications and the development of surfaces with tunable optical transparency for innovative medical applications, intelligent windows, and other devices.
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Affiliation(s)
- Kengo Manabe
- Center for Material Design Science, School of Integrated Design Engineering, Keio University , 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Takeshi Matsubayashi
- Center for Material Design Science, School of Integrated Design Engineering, Keio University , 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Mizuki Tenjimbayashi
- Center for Material Design Science, School of Integrated Design Engineering, Keio University , 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Takeo Moriya
- Center for Material Design Science, School of Integrated Design Engineering, Keio University , 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Yosuke Tsuge
- Center for Material Design Science, School of Integrated Design Engineering, Keio University , 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
| | - Kyu-Hong Kyung
- SNT Co., Ltd., 7-1 Shinkawasaki, Saiwai-ku, Kawasaki, Kanagawa 212-0032, Japan
| | - Seimei Shiratori
- Center for Material Design Science, School of Integrated Design Engineering, Keio University , 3-14-1 Hiyoshi, Kohoku-ku, Yokohama, Kanagawa 223-8522, Japan
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31
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Guo J, Liu L, Liu H, Gan K, Liu X, Song X, Niu D, Chen T. Influence of femtosecond laser on the osteogenetic efficiency of polyetheretherketone and its composite. HIGH PERFORM POLYM 2016. [DOI: 10.1177/0954008316667460] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Objective: This study aimed to evaluate the effect of a femtosecond laser on the osteogenetic efficiency of polyetheretherketone (PEEK) and its composite for clinical applications. Methods: One hundred pieces of PEEK and its composite (6 × 4 × 2 mm3) were randomly divided into four groups and treated as follows: group A1, PEEK; group A2, PEEK + femtosecond laser; group B1, PEEK composite; and group B2, PEEK composite + femtosecond. The surface morphology of the pieces of each group was observed through scanning electron microscopy. The surface roughness and wettability, which were considered as the main parameters affecting cell adhesion characteristics of implants, were measured. The animals whose mandibles were implanted with the four groups of materials were killed at the end of 6 and 12 weeks. Various characterization tests, such as Cone Beam Computed Tomography (CBCT), push-out test, microscope test, and bone implant contact , were conducted to investigate the healing effect between materials and bones. Results: In group B1, the nanoparticles in PEEK were uniformly distributed. In groups A2 and B2, many periodic nanostructures were observed. The surface roughness and wettability of group B2 were significantly increased compared to those of the other groups ( p < 0.05). At each time point, the number of trabecular bones, contact strength, and BIC of group B2 were higher than those of the three other groups ( p < 0.05). Compared with those of group A1, the test results of group B1 were significantly improved. Conclusion: Femtosecond lasers can effectively enhance the biological activity of PEEK and its composite; PEEK composite exhibits better biological activity than PEEK.
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Affiliation(s)
- Jing Guo
- School and Hospital of Stomatology, Jilin University, Changchun, People’s Republic of China
| | - Lijun Liu
- School and Hospital of Stomatology, Jilin University, Changchun, People’s Republic of China
| | - Hong Liu
- School and Hospital of Stomatology, Jilin University, Changchun, People’s Republic of China
| | - Kang Gan
- School and Hospital of Stomatology, Jilin University, Changchun, People’s Republic of China
| | - Xiuju Liu
- School and Hospital of Stomatology, Jilin University, Changchun, People’s Republic of China
| | - Xiaoqing Song
- School and Hospital of Stomatology, Jilin University, Changchun, People’s Republic of China
| | - Deli Niu
- School and Hospital of Stomatology, Jilin University, Changchun, People’s Republic of China
| | - Tianjie Chen
- School and Hospital of Stomatology, Jilin University, Changchun, People’s Republic of China
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32
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Tian H, Shao J, Hu H, Wang L, Ding Y. Generation of Hierarchically Ordered Structures on a Polymer Film by Electrohydrodynamic Structure Formation. ACS APPLIED MATERIALS & INTERFACES 2016; 8:16419-16427. [PMID: 27268135 DOI: 10.1021/acsami.6b03406] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The extensive applications of hierarchical structures in optoelectronics, micro/nanofluidics, energy conservation, etc., have led to the development of a variety of approaches for their fabrication, which can be categorized as bottom-up or top-down strategies. Current bottom-up and top-down strategies bear a complementary relationship to each other due to their processing characteristics, i.e., the advantages of one method correspond to the disadvantages of the other, and vice versa. Here we propose a novel method based on electrohydrodynamic structure formation, aimed at combining the main advantages of the two strategies. The method allows the fabrication of a hierarchically ordered structure with well-defined geometry and high mechanical durability on a polymer film, through a simple and low-cost process also suitable for mass-production. In this approach, upon application of an electric field between a template and a substrate sandwiching an air gap and a polymer film, the polymer is pulled toward the template and further flows into the template cavities, resulting in a hierarchical structure with primary and secondary patterns determined by electrohydrodynamic instability and by the template features, respectively. In this work, the fabrication of a hierarchical structure by electrohydrodynamic structure formation is studied using numerical simulations and experimental tests. The proposed method is then employed for the one-step fabrication of a hierarchical structure exhibiting a gradual transition in the periodicity of the primary structure using a slant template and a flat polymer film, which presents an excellent performance on controllable wettability.
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Affiliation(s)
- Hongmiao Tian
- Micro- and Nano-technology Research Center, State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University , 28 Xianning Road, Xi'an, 710049, P. R. China
| | - Jinyou Shao
- Micro- and Nano-technology Research Center, State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University , 28 Xianning Road, Xi'an, 710049, P. R. China
| | - Hong Hu
- Micro- and Nano-technology Research Center, State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University , 28 Xianning Road, Xi'an, 710049, P. R. China
| | - Li Wang
- Micro- and Nano-technology Research Center, State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University , 28 Xianning Road, Xi'an, 710049, P. R. China
| | - Yucheng Ding
- Micro- and Nano-technology Research Center, State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University , 28 Xianning Road, Xi'an, 710049, P. R. China
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33
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Nam J, Huang Y, Agarwal S, Lannutti J. Improved cellular infiltration in electrospun fiber via engineered porosity. TISSUE ENGINEERING 2007; 13:2249-57. [PMID: 17536926 PMCID: PMC4948987 DOI: 10.1089/ten.2006.0306] [Citation(s) in RCA: 329] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Small pore sizes inherent to electrospun matrices can hinder efficient cellular ingrowth. To facilitate infiltration while retaining its extracellular matrix-like character, electrospinning was combined with salt leaching to produce a scaffold having deliberate, engineered delaminations. We made elegant use of a specific randomizing component of the electrospinning process, the Taylor Cone and the falling fiber beneath it, to produce a uniform, well-spread distribution of salt particles. After 3 weeks of culture, up to 4 mm of cellular infiltration was observed, along with cellular coverage of up to 70% within the delaminations. To our knowledge, this represents the first observation of extensive cellular infiltration of electrospun matrices. Infiltration appears to be driven primarily by localized proliferation rather than coordinated cellular locomotion. Cells also moved from the salt-generated porosity into the surrounding electrospun fiber matrix. Given that the details of salt deposition (amount, size, and number density) are far from optimized, the result provides a convincing illustration of the ability of mammalian cells to interact with appropriately tailored electrospun matrices. These layered structures can be precisely fabricated by varying the deposition interval and particle size conceivably to produce in vivo-like gradients in porosity such that the resulting scaffolds better resemble the desired final structure.
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Affiliation(s)
- Jin Nam
- Department of Materials Science and Engineering, The Ohio State University, Columbus, Ohio 43210, USA
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