101
|
Fathi-Azarbayjani A, Jouyban A. Surface tension in human pathophysiology and its application as a medical diagnostic tool. ACTA ACUST UNITED AC 2015; 5:29-44. [PMID: 25901295 PMCID: PMC4401165 DOI: 10.15171/bi.2015.06] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2014] [Revised: 01/03/2015] [Accepted: 01/26/2015] [Indexed: 12/29/2022]
Abstract
![]()
Introduction: Pathological features of disease appear to be quite different. Despite this diversity, the common feature of various disorders underlies physicochemical and biochemical factors such as surface tension. Human biological fluids comprise various proteins and phospholipids which are capable of adsorption at fluid interfaces and play a vital role in the physiological function of human organs. Surface tension of body fluids correlates directly to the development of pathological states.
Methods: In this review, the variety of human diseases mediated by the surface tension changes of biological phenomena and the failure of biological fluids to remain in their native state are discussed.
Results: Dynamic surface tension measurements of human biological fluids depend on various parameters such as sex, age and changes during pregnancy or certain disease. It is expected that studies of surface tension behavior of human biological fluids will provide additional information and might become useful in medical practice. Theoretical background on surface tension measurement and surface tension values of reference fluids obtained from healthy and sick patients are depicted.
Conclusion: It is well accepted that no single biomarker will be effective in clinical diagnosis. The surface tension measurement combined with routine lab tests may be a novel non-invasive method which can not only facilitate the discovery of diagnostic models for various diseases and its severity, but also be a useful tool for monitoring treatment efficacy. We therefore expect that studies of surface tension behavior of human biological fluids will provide additional useful information in medical practice.
Collapse
Affiliation(s)
| | - Abolghasem Jouyban
- Drug Applied Research Center and Faculty of Pharmacy, Tabriz University of Medical Sciences, Tabriz, Iran
| |
Collapse
|
102
|
Liberio MS, Sadowski MC, Soekmadji C, Davis RA, Nelson CC. Differential effects of tissue culture coating substrates on prostate cancer cell adherence, morphology and behavior. PLoS One 2014; 9:e112122. [PMID: 25375165 PMCID: PMC4223027 DOI: 10.1371/journal.pone.0112122] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Accepted: 10/12/2014] [Indexed: 12/22/2022] Open
Abstract
Weak cell-surface adhesion of cell lines to tissue culture surfaces is a common problem and presents technical limitations to the design of experiments. To overcome this problem, various surface coating protocols have been developed. However, a comparative and precise real-time measurement of their impact on cell behavior has not been conducted. The prostate cancer cell line LNCaP, derived from a patient lymph node metastasis, is a commonly used model system in prostate cancer research. However, the cells’ characteristically weak attachment to the surface of tissue culture vessels and cover slips has impeded their manipulation and analysis and use in high throughput screening. To improve the adherence of LNCaP cells to the culture surface, we compared different coating reagents (poly-l-lysine, poly-l-ornithine, collagen type IV, fibronectin, and laminin) and culturing conditions and analyzed their impact on cell proliferation, adhesion, morphology, mobility and gene expression using real-time technologies. The results showed that fibronectin, poly-l-lysine and poly-l-ornithine improved LNCaP cells adherence and provoked cell morphology alterations, such as increase of nuclear and cellular area. These coating reagents also induced a higher expression of F-actin and reduced cell mobility. In contrast, laminin and collagen type IV did not improve adherence but promoted cell aggregation and affected cell morphology. Cells cultured in the presence of laminin displayed higher mobility than control cells. All the coating conditions significantly affected cell viability; however, they did not affect the expression of androgen receptor-regulated genes. Our comparative findings provide important insight for the selection of the ideal coating reagent and culture conditions for the cancer cell lines with respect to their effect on proliferation rate, attachment, morphology, migration, transcriptional response and cellular cytoskeleton arrangement.
Collapse
Affiliation(s)
- Michelle S. Liberio
- Eskitis Institute for Drug Discovery, Griffith University, Nathan, Australia
- Australian Prostate Cancer Research Centre - Queensland, Institute of Health and Biomedical Innovation, Queensland University of Technology, Princess Alexandra Hospital, Translational Research Institute, Brisbane, Australia
| | - Martin C. Sadowski
- Australian Prostate Cancer Research Centre - Queensland, Institute of Health and Biomedical Innovation, Queensland University of Technology, Princess Alexandra Hospital, Translational Research Institute, Brisbane, Australia
| | - Carolina Soekmadji
- Australian Prostate Cancer Research Centre - Queensland, Institute of Health and Biomedical Innovation, Queensland University of Technology, Princess Alexandra Hospital, Translational Research Institute, Brisbane, Australia
| | - Rohan A. Davis
- Eskitis Institute for Drug Discovery, Griffith University, Nathan, Australia
| | - Colleen C. Nelson
- Australian Prostate Cancer Research Centre - Queensland, Institute of Health and Biomedical Innovation, Queensland University of Technology, Princess Alexandra Hospital, Translational Research Institute, Brisbane, Australia
- * E-mail:
| |
Collapse
|
103
|
Covalent immobilization of hLf1-11 peptide on a titanium surface reduces bacterial adhesion and biofilm formation. Acta Biomater 2014; 10:3522-34. [PMID: 24704699 DOI: 10.1016/j.actbio.2014.03.026] [Citation(s) in RCA: 105] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2013] [Revised: 03/19/2014] [Accepted: 03/24/2014] [Indexed: 01/18/2023]
Abstract
Bacterial infection represents a major cause of implant failure in dentistry. A common approach to overcoming this issue and treating peri-implant infection consists in the use of antibiotics. However, the rise of multidrug-resistant bacteria poses serious concerns to this strategy. A promising alternative is the use of antimicrobial peptides due to their broad-spectrum activity against bacteria and reduced bacterial resistance responses. The aim of the present study was to determine the in vitro antibacterial activity of the human lactoferrin-derived peptide hLf1-11 anchored to titanium surfaces. To this end, titanium samples were functionalized with the hLf1-11 peptide either by silanization methods or physical adsorption. X-ray photoelectron spectroscopy analyses confirmed the successful covalent attachment of the hLf1-11 peptide onto titanium surfaces. Lactate dehydrogenase assay determined that hLf1-11 peptide did not affect fibroblast viability. An outstanding reduction in the adhesion and early stages of biofilm formation of Streptococcus sanguinis and Lactobacillus salivarius was observed on the biofunctionalized surfaces compared to control non-treated samples. Furthermore, samples coated with the hLf1-11 peptide inhibited the early stages of bacterial growth. Thus, this strategy holds great potential to develop antimicrobial biomaterials for dental applications.
Collapse
|
104
|
A review on the wettability of dental implant surfaces I: theoretical and experimental aspects. Acta Biomater 2014; 10:2894-906. [PMID: 24590162 DOI: 10.1016/j.actbio.2014.02.040] [Citation(s) in RCA: 218] [Impact Index Per Article: 21.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2013] [Revised: 02/14/2014] [Accepted: 02/21/2014] [Indexed: 01/31/2023]
Abstract
The surface wettability of biomaterials determines the biological cascade of events at the biomaterial/host interface. Wettability is modulated by surface characteristics, such as surface chemistry and surface topography. However, the design of current implant surfaces focuses mainly on specific micro- and nanotopographical features, and is still far from predicting the concomitant wetting behavior. There is an increasing interest in understanding the wetting mechanisms of implant surfaces and the role of wettability in the biological response at the implant/bone or implant/soft tissue interface. Fundamental knowledge related to the influence of surface roughness (i.e. a quantification of surface topography) on titanium and titanium alloy surface wettability, and the different associated wetting regimes, can improve our understanding of the role of wettability of rough implant surfaces on the biological outcome. Such an approach has been applied to biomaterial surfaces only in a limited way. Focusing on titanium dental and orthopaedic implants, the present study reviews the current knowledge on the wettability of biomaterial surfaces, encompassing basic and applied aspects that include measurement techniques, thermodynamic aspects of wetting and models predicting topographical and roughness effects on the wetting behavior.
Collapse
|
105
|
Varisco M, Khanna N, Brunetto PS, Fromm KM. New antimicrobial and biocompatible implant coating with synergic silver-vancomycin conjugate action. ChemMedChem 2014; 9:1221-30. [PMID: 24799389 DOI: 10.1002/cmdc.201400072] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2014] [Indexed: 12/13/2022]
Abstract
Materials foreign to the body are used ever more frequently, as increasing numbers of patients require implants. As a consequence, the numbers of implant-related infections have grown as well, and with increasing resistance. Treatments often fail; thus, new antibacterial coating strategies are being developed by scientists to avoid, or at least strongly reduce, bacterial adhesion to implant surfaces. In this study, we focused on producing a self-protective coating combining silver(I) ions and a vancomycin-derived molecule, intelligent pyridinate vancomycin (IPV), with a synergetic and effective action against bacteria. These Ag(I) -IPV conjugate-coated surfaces are well characterized and exhibit strong bactericidal activity in vitro against Staphylococci strains. Furthermore, the released quantities of both drugs from the coated surfaces do not affect their biocompatibility and soft tissue integration. These newly developed Ag(I) -IPV conjugate coatings thus represent a possible and efficient protection method against bacterial adhesion and biofilm formation during and after implant surgery.
Collapse
Affiliation(s)
- Massimo Varisco
- Department of Chemistry, University of Fribourg, Chemin du Musée 9, 1700 Fribourg (Switzerland)
| | | | | | | |
Collapse
|
106
|
Lopes TD, Riegel-Vidotti IC, Grein A, Tischer CA, Faria-Tischer PCDS. Bacterial cellulose and hyaluronic acid hybrid membranes: Production and characterization. Int J Biol Macromol 2014; 67:401-8. [PMID: 24704166 DOI: 10.1016/j.ijbiomac.2014.03.047] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Revised: 03/18/2014] [Accepted: 03/19/2014] [Indexed: 10/25/2022]
Abstract
In this study, the effect of the addition of hyaluronic acid (HA) on bacterial cellulose (BC) production, under static conditions was evaluated in terms of the properties of the resulting BC hybrid membranes. HA was added to the fermentation process in three distinct time points: first day (BC-T0), third day (BC-T3) and sixth day (BC-T6). Analyses of FT-IR and CP/MAS (13)C NMR confirmed the presence of HA in bacterial cellulose membranes. The crystal structure, crystallinity index (Ic) surface roughness, thermal stability and hybrophobic/hydrophilic character changed. Membranes with higher roughness were produced with HA added on the first and third day of fermentation process. The surface energy of BC/HA membranes was calculated and more hydrophilic membranes were produced by the addition of HA on the third and sixth day, also resulting in more thermally stable materials. The results demonstrate that bacterial cellulose/hyaluronic acid hybrid membranes can be produced in situ and suggest that HA interacts with the sub-elementary bacterial cellulose fibrils, changing the properties of the membranes. The study and understanding of the factors that affect those properties are of utmost importance for the safe and efficient use of BC as biomaterials in numerous applications, specifically in the biological field.
Collapse
Affiliation(s)
- Tatyane Duran Lopes
- Department of Biochemistry and Biotechnology, CCE, State University of Londrina, PO Box 6001, 86051-990 Londrina, PR, Brazil
| | | | - Aline Grein
- Departamento de Química, Universidade Federal do Paraná (UFPR), CxP 19081, CEP 81531-980 Curitiba, PR, Brazil
| | - Cesar Augusto Tischer
- Department of Biochemistry and Biotechnology, CCE, State University of Londrina, PO Box 6001, 86051-990 Londrina, PR, Brazil.
| | | |
Collapse
|
107
|
Suvannasara P, Tateyama S, Miyasato A, Matsumura K, Shimoda T, Ito T, Yamagata Y, Fujita T, Takaya N, Kaneko T. Biobased Polyimides from 4-Aminocinnamic Acid Photodimer. Macromolecules 2014. [DOI: 10.1021/ma402499m] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Phruetchika Suvannasara
- School
of Materials Science, Japan Advanced Institute of Science and Technology (JAIST), 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
- Program
of Petrochemistry and Polymer Science, Faculty of Science, Chulalongkorn University, Patumwan, Bangkok, 10330 Thailand
| | - Seiji Tateyama
- School
of Materials Science, Japan Advanced Institute of Science and Technology (JAIST), 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
| | - Akio Miyasato
- School
of Materials Science, Japan Advanced Institute of Science and Technology (JAIST), 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
| | - Kazuaki Matsumura
- School
of Materials Science, Japan Advanced Institute of Science and Technology (JAIST), 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
| | - Tatsuya Shimoda
- School
of Materials Science, Japan Advanced Institute of Science and Technology (JAIST), 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
| | - Takashi Ito
- Graduate
School of Life and Environmental Sciences, University of Tsukuba, Tsukuba,
Ibaraki 305-8572, Japan
| | - Yukiho Yamagata
- Graduate
School of Life and Environmental Sciences, University of Tsukuba, Tsukuba,
Ibaraki 305-8572, Japan
| | - Tomoya Fujita
- Graduate
School of Life and Environmental Sciences, University of Tsukuba, Tsukuba,
Ibaraki 305-8572, Japan
| | - Naoki Takaya
- Graduate
School of Life and Environmental Sciences, University of Tsukuba, Tsukuba,
Ibaraki 305-8572, Japan
| | - Tatsuo Kaneko
- School
of Materials Science, Japan Advanced Institute of Science and Technology (JAIST), 1-1 Asahidai, Nomi, Ishikawa 923-1292, Japan
| |
Collapse
|
108
|
Kishore A, Biswas K, N VR, Shunmugam R, Sarma JD. Functionalized single walled carbon nanotubes facilitate efficient differentiation of neuroblastoma cells in vitro. RSC Adv 2014. [DOI: 10.1039/c4ra09540e] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Single-walled carbon nanotubes (SWNTs) have been increasingly used as scaffolds for neuronal growth and differentiation.
Collapse
Affiliation(s)
- Abhinoy Kishore
- Department of Biological Sciences
- Indian Institute of Science Education and Research-Kolkata (IISER-K)
- Nadia, India
| | - Kaushiki Biswas
- Department of Biological Sciences
- Indian Institute of Science Education and Research-Kolkata (IISER-K)
- Nadia, India
| | - Vijaykameswara Rao N
- Polymer Research Center
- Department of Chemical Sciences
- Indian Institute of Science Education and Research-Kolkata (IISER-K)
- Nadia, India
| | - Raja Shunmugam
- Polymer Research Center
- Department of Chemical Sciences
- Indian Institute of Science Education and Research-Kolkata (IISER-K)
- Nadia, India
| | - Jayasri Das Sarma
- Department of Biological Sciences
- Indian Institute of Science Education and Research-Kolkata (IISER-K)
- Nadia, India
| |
Collapse
|
109
|
Woehl MA, Ono L, Riegel Vidotti IC, Wypych F, Schreiner WH, Sierakowski MR. Bioactive nanocomposites of bacterial cellulose and natural hydrocolloids. J Mater Chem B 2014; 2:7034-7044. [DOI: 10.1039/c4tb00706a] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Bacterial cellulose–natural hydrocolloid bionanocomposites were developed as cell growth substrates. The surface free energy of the composites is related to fibroblast viability. Surface properties of the bionanocomposites can be adjusted purely by changing the component proportions.
Collapse
Affiliation(s)
| | - Lucy Ono
- Departamento de Patologia Básica
- Curitiba 81531-980, Brazil
| | | | | | - Wido Herwig Schreiner
- Departamento de Física
- Universidade Federal do Paraná (UFPR)
- Curitiba 81531-980, Brazil
| | | |
Collapse
|
110
|
Inoue Y, Kawaguchi M, Masui I, Horibe H, Rikimaru T, Kuroki M, Katsumata Y, Mori N, Hayakawa T, Fukushima T. Biological and Chemical Assessment of DNA/Chitosan Complex Film. J HARD TISSUE BIOL 2014. [DOI: 10.2485/jhtb.23.399] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
111
|
Bae SH, Son SR, Kumar Sakar S, Nguyen TH, Kim SW, Min YK, Lee BT. Evaluation of the potential anti-adhesion effect of the PVA/Gelatin membrane. J Biomed Mater Res B Appl Biomater 2013; 102:840-9. [DOI: 10.1002/jbm.b.33066] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2013] [Revised: 08/27/2013] [Accepted: 10/20/2013] [Indexed: 11/07/2022]
Affiliation(s)
- Sang-Ho Bae
- Department of Surgery; College of Medicine; Soonchunhyang University Hospital; Cheonan Chungnam 330-090 Republic of Korea
| | - So-Ra Son
- Department of Tissue Regeneration; College of Medicine; Soonchunhyang University; Cheonan Chungnam 330-090 Republic of Korea
| | - Swapan Kumar Sakar
- Department of Tissue Regeneration; College of Medicine; Soonchunhyang University; Cheonan Chungnam 330-090 Republic of Korea
| | - Thi-Hiep Nguyen
- Department of Tissue Regeneration; College of Medicine; Soonchunhyang University; Cheonan Chungnam 330-090 Republic of Korea
| | - Shin-Woo Kim
- Department of Physiology; College of Medicine; Soonchunhyang University; Cheonan Chungnam 330-090 Republic of Korea
| | - Young-Ki Min
- Department of Physiology; College of Medicine; Soonchunhyang University; Cheonan Chungnam 330-090 Republic of Korea
| | - Byong-Taek Lee
- Department of Tissue Regeneration; College of Medicine; Soonchunhyang University; Cheonan Chungnam 330-090 Republic of Korea
| |
Collapse
|
112
|
Generation of Cellular Micropatterns on a Single-Layered Graphene Film. Macromol Biosci 2013; 14:314-9. [DOI: 10.1002/mabi.201300346] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Revised: 09/15/2013] [Indexed: 11/07/2022]
|
113
|
Chen YS, Tsou PC, Lo JM, Tsai HC, Wang YZ, Hsiue GH. Poly(N-isopropylacrylamide) hydrogels with interpenetrating multiwalled carbon nanotubes for cell sheet engineering. Biomaterials 2013; 34:7328-34. [DOI: 10.1016/j.biomaterials.2013.06.017] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2013] [Accepted: 06/11/2013] [Indexed: 10/26/2022]
|
114
|
Choi JS, Messersmith PB, Yoo HS. Decoration of Electrospun Nanofibers with Monomeric Catechols to Facilitate Cell Adhesion. Macromol Biosci 2013; 14:270-9. [DOI: 10.1002/mabi.201300281] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2013] [Revised: 07/20/2013] [Indexed: 11/10/2022]
Affiliation(s)
- Ji Suk Choi
- Department of Biomedical Materials Engineering; Kangwon National University; Chuncheon 200-701 Republic of Korea
- Institute of Bioscience and Bioengineering; Kangwon National University; Republic of Korea
| | - Phillip B. Messersmith
- Department of Biomedical Engineering and Chemistry of Life Processes Institute; Northwestern University; Evanston IL 60208 USA
| | - Hyuk Sang Yoo
- Department of Biomedical Materials Engineering; Kangwon National University; Chuncheon 200-701 Republic of Korea
- Institute of Bioscience and Bioengineering; Kangwon National University; Republic of Korea
| |
Collapse
|
115
|
Zuo J, Huang X, Zhong X, Zhu B, Sun Q, Jin C, Quan H, Tang Z, Chen W. A comparative study of the influence of three pure titanium plates with different micro- and nanotopographic surfaces on preosteoblast behaviors. J Biomed Mater Res A 2013; 101:3278-84. [PMID: 23625827 DOI: 10.1002/jbm.a.34612] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2012] [Revised: 12/06/2012] [Accepted: 01/02/2013] [Indexed: 01/09/2023]
Abstract
There is a great demand for dental implants with the ability to accelerate periimplant bone regeneration. Modification of surface micro- and nanotopographies has been revealed to affect bone cell metabolism. In this study, we utilized dielectric barrier discharge (DBD) technology to modify commercially pure titanium (Ti-tr) surfaces and then investigated the cytocompability of DBD-modified Ti surface when compared with machined (Ti-m) and polished (Ti-p) Ti surfaces. These three kinds of Ti plates exhibited different surface energies and topographies at the micro- and nanoscale levels. The DBD-treated pure Ti surface significantly enhances cell adhesion, spread, and proliferation of MC3T3-E1 preosteoblast cells compared with the Ti-p and Ti-m surfaces, suggesting that Ti-tr has better cytocompatibility compared with the other two surfaces. Preosteoblast cells on Ti-m surface exhibited higher alkaline phosphatase activity than cells on Ti-tr and Ti-p surfaces 14 days after seeding. No significant difference in alkaline phosphatase activity was observed between cells grown on Ti-tr and Ti-p surfaces. Our study demonstrated that DBD modification significantly enhanced cell adhesion, spread, and proliferation of preosteoblasts with no negative effects on cell differentiation. Microtopography and nanotopography of the surfaces of different materials and chemical/energetic properties have a synergistic effect on cell attachment, proliferation, and differentiation.
Collapse
Affiliation(s)
- Jun Zuo
- Department of Oral and Maxillofacial Surgery, Xiangya Hospital School of Stomatology, Central South University, Changsha, 410078, China; Shanghai Key Laboratory of Stomatology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | | | | | | | | | | | | | | | | |
Collapse
|
116
|
Chandra P, Kim J, Rhee SW. Quantitative Analysis of Growth of Cells on Physicochemically Modified Surfaces. B KOREAN CHEM SOC 2013. [DOI: 10.5012/bkcs.2013.34.2.524] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
|
117
|
Zhang X, Wang L, Levänen E. Superhydrophobic surfaces for the reduction of bacterial adhesion. RSC Adv 2013. [DOI: 10.1039/c3ra40497h] [Citation(s) in RCA: 420] [Impact Index Per Article: 38.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
|
118
|
Irie A, Ohno J, Hayakawa T, Kido H, Fukushima T. Transparent Film Formation of DNA/Cationic Polymer Complexes by Hydrothermal Hot Pressing: Observation of Cell Culture on Films and Biodegradation of Films In Vivo. J HARD TISSUE BIOL 2013. [DOI: 10.2485/jhtb.22.105] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
119
|
Karim TB, McKenna GB. Unusual Surface Mechanical Properties of Poly(α-methylstyrene): Surface Softening and Stiffening at Different Temperatures. Macromolecules 2012. [DOI: 10.1021/ma302192b] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Taskin B. Karim
- Department of Chemical
Engineering, Texas Tech University, Lubbock, Texas 79409, United States
| | - Gregory B. McKenna
- Department of Chemical
Engineering, Texas Tech University, Lubbock, Texas 79409, United States
| |
Collapse
|
120
|
Burrows MC, Zamarion VM, Filippin-Monteiro FB, Schuck DC, Toma HE, Campa A, Garcia CRS, Catalani LH. Hybrid Scaffolds Built From PET and Collagen as a Model For Vascular Graft Architecture. Macromol Biosci 2012; 12:1660-70. [DOI: 10.1002/mabi.201200154] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2012] [Revised: 07/23/2012] [Indexed: 11/11/2022]
|
121
|
Baek NS, Kim YH, Han YH, Offenhäusser A, Chung MA, Jung SD. Fine neurite patterns from photocrosslinking of cell-repellent benzophenone copolymer. J Neurosci Methods 2012; 210:161-8. [DOI: 10.1016/j.jneumeth.2012.07.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2012] [Revised: 06/30/2012] [Accepted: 07/18/2012] [Indexed: 11/25/2022]
|
122
|
Sailer M, Lai Wing Sun K, Mermut O, Kennedy TE, Barrett CJ. High-throughput cellular screening of engineered ECM based on combinatorial polyelectrolyte multilayer films. Biomaterials 2012; 33:5841-7. [DOI: 10.1016/j.biomaterials.2012.05.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2012] [Accepted: 05/02/2012] [Indexed: 11/26/2022]
|
123
|
Introzzi L, Fuentes-Alventosa JM, Cozzolino CA, Trabattoni S, Tavazzi S, Bianchi CL, Schiraldi A, Piergiovanni L, Farris S. "Wetting enhancer" pullulan coating for antifog packaging applications. ACS APPLIED MATERIALS & INTERFACES 2012; 4:3692-700. [PMID: 22758352 DOI: 10.1021/am300784n] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
A new antifog coating made of pullulan is described in this work. The antifog properties are discussed in terms of wettability, surface chemistry/morphology, and by quantitative assessment of the optical properties (haze and transparency) before and after fog formation. The work also presents the results of antifog tests simulating the typical storage conditions of fresh foods. In these tests, the antifog efficiency of the pullulan coating was compared with that of two commercial antifog films, whereas an untreated low-density polyethylene (LDPE) film was used as a reference. The obtained results revealed that the pullulan coating behaved as a "wetting enhancer", mainly due to the low water contact angle (∼24°), which in turn can be ascribed to the inherent hydrophilic nature of this polysaccharide, as also suggested by the X-ray photoelectron spectroscopy experiments. Unlike the case of untreated LDPE and commercial antifog samples, no discrete water formations (i.e., droplets or stains) were observed on the antifog pullulan coating on refrigeration during testing. Rather, an invisible, continuous and thin layer of water occurred on the biopolymer surface, which was the reason for the unaltered haze and increased transparency, with the layer of water possibly behaving as an antireflection layer. As confirmed by atomic force microscopy analysis, the even deposition of the coating on the plastic substrate compared to the patchy surfacing of the antifog additives in the commercial films is another important factor dictating the best performance of the antifog pullulan coating.
Collapse
Affiliation(s)
- Laura Introzzi
- DeFENS, Department of Food, Environmental and Nutritional Sciences, Packaging Division, University of Milan , Via Celoria 2, I - 20133 Milan, Italy
| | | | | | | | | | | | | | | | | |
Collapse
|
124
|
El Abed S, Ibnsouda SK, Latrache H, Meftah H, Tahri NJ, Hamadi F. Environmental Scanning Electron Microscopy characterization of the adhesion of conidia from Penicillium expansum to cedar wood substrata at different pH values. World J Microbiol Biotechnol 2012; 28:1707-13. [PMID: 22805953 DOI: 10.1007/s11274-011-0980-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2011] [Accepted: 12/13/2011] [Indexed: 11/29/2022]
Abstract
Initial microbial adhesion to surfaces is a complicated process that is affected by a number of factors. An important property of a solution that may influence adhesion is pH. The surface properties of the cedar wood were characterized by the sessile drop technique. Moreover, the interfacial free energy of surface adhesion to the cedar wood was determined under pH values (2, 3, 5, 7, 9 and 11). The results showed that cedar wood examined at different pH levels could be considered hydrophobic ranged from Giwi = -13.1 mJ/m(2) to Giwi = -75 mJ/m(2). We noted that the electron-donor character of cedar wood was important at both basic and limit acidic conditions (pH 11 and pH 3) and it decreased at intermediate pH (pH 5). The cedar wood substratum presents a weak electron acceptor under various pH's. In addition, the adhesion of conidia from Penicilllium expansum to the cedar wood surfaces at different pH values (2, 3, 5, 7, 9 and 11) was investigated using Environmental Scanning Electron Microscopy and image analysis was assessed with the Mathlab(®) program. The data analysis showed that the conidia from P. expansum were strongly influenced by the pH. The maximum adhesion occurs in the pH 11 and pH 3 and decreased to 24% at pH 5.
Collapse
Affiliation(s)
- Soumya El Abed
- Equipe de recherche, Laboratoire de Biotechnologie Microbienne, Faculté des Sciences et Techniques de Fès- Saïs-Maroc, B.P. 2202, Route d'Imouzzer Fès, Maroc
| | | | | | | | | | | |
Collapse
|
125
|
Saha S, Lo PK, Duan X, Chen H, Wang Q. Breast tumour initiating cell fate is regulated by microenvironmental cues from an extracellular matrix. Integr Biol (Camb) 2012; 4:897-904. [PMID: 22722498 DOI: 10.1039/c2ib20034a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Cancer stem cells, also known as tumour-initiating cells (TICs), are identified as highly tumorigenic population within tumours and hypothesized to be main regulators in tumour growth, metastasis and relapse. Evidence also suggests that a tumour microenvironment plays a critical role in the development and progression of cancer, by constantly modulating cell-matrix interactions. Scientists have tried to characterize and identify the TIC population but the actual combination of extracellular components in deciphering the fate of TICs has not been explored. The basic unanswered question is the phenotypic stability of this TIC population in a tissue extracellular matrix setting. The in vivo complexity makes it difficult to identify parameters in a diverse milieu that affect TICs behaviour. Herein we studied how the TIC population would respond when subjected to a unique microenvironment composed of different extracellular proteins. The TIC-enriched population isolated from a Her2/neu-induced mouse mammary tumour was cultured on collagen, fibronectin and laminin coated substrates for one to two weeks. Our observations indicate that a laminin substrate can maintain the majority of the self-renewing and tumorigenic TIC population, whereas collagen induced a more differentiated phenotype of the cells. Also interestingly, fibronectin substrates dictated an invasive phenotype of TICs as evidenced from the EMT-related gene expression pattern. The results of this study signify that the microenvironmental cues play a considerable role in tumour relapse and progression by altering the cancer stem cell behaviour and thus this knowledge could be used to design novel cancer therapeutics.
Collapse
Affiliation(s)
- Sharmistha Saha
- Department of Chemistry and Biochemistry & Nanocenter, University of South Carolina, Columbia, SC 29208, USA
| | | | | | | | | |
Collapse
|
126
|
Duan X, Qian G, Zhou J, Zhou X, Chen D, Yuan W. Flat interface mediated synthesis of platelet carbon nanofibers on Fe nanoparticles. Catal Today 2012. [DOI: 10.1016/j.cattod.2011.08.032] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
|
127
|
Waugh D, Lawrence J. Modulating calcium phosphate formation using CO2 laser engineering of a polymeric material. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2012. [DOI: 10.1016/j.msec.2011.10.018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
128
|
Amim J, Petri DF. Effect of amino-terminated substrates onto surface properties of cellulose esters and their interaction with lectins. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2012. [DOI: 10.1016/j.msec.2011.11.004] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
129
|
Vanderleyden E, Van Hoorebeke L, Schacht E, Dubruel P. Comparative Study of Collagen and Gelatin Coatings on Titanium Surfaces. ACTA ACUST UNITED AC 2011. [DOI: 10.1002/masy.201100040] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|
130
|
Karim TB, McKenna GB. Evidence of surface softening in polymers and their nanocomposites as determined by spontaneous particle embedment. POLYMER 2011. [DOI: 10.1016/j.polymer.2011.10.045] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
|
131
|
Tonda-Turo C, Gentile P, Saracino S, Chiono V, Nandagiri V, Muzio G, Canuto R, Ciardelli G. Comparative analysis of gelatin scaffolds crosslinked by genipin and silane coupling agent. Int J Biol Macromol 2011; 49:700-6. [DOI: 10.1016/j.ijbiomac.2011.07.002] [Citation(s) in RCA: 92] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2011] [Revised: 06/01/2011] [Accepted: 07/01/2011] [Indexed: 11/26/2022]
|
132
|
Polyacylurethanes as Novel Degradable Cell Carrier Materials for Tissue Engineering. MATERIALS 2011; 4:1705-1727. [PMID: 28824103 PMCID: PMC5448868 DOI: 10.3390/ma4101705] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/10/2011] [Accepted: 09/21/2011] [Indexed: 11/17/2022]
Abstract
Polycaprolactone (PCL) polyester and segmented aliphatic polyester urethanes based on PCL soft segment have been thoroughly investigated as biodegradable scaffolds for tissue engineering. Although proven beneficial as long term implants, these materials degrade very slowly and are therefore not suitable in applications in which scaffold support is needed for a shorter time. A recently developed class of polyacylurethanes (PAUs) is expected to fulfill such requirements. Our aim was to assess in vitro the degradation of PAUs and evaluate their suitability as temporary scaffold materials to support soft tissue repair. With both a mass loss of 2.5–3.0% and a decrease in molar mass of approx. 35% over a period of 80 days, PAUs were shown to degrade via both bulk and surface erosion mechanisms. Fourier Transform Infra Red (FTIR) spectroscopy was successfully applied to study the extent of PAUs microphase separation during in vitro degradation. The microphase separated morphology of PAU1000 (molar mass of the oligocaprolactone soft segment = 1000 g/mol) provided this polymer with mechano-physical characteristics that would render it a suitable material for constructs and devices. PAU1000 exhibited excellent haemocompatibility in vitro. In addition, PAU1000 supported both adhesion and proliferation of vascular endothelial cells and this could be further enhanced by pre-coating of PAU1000 with fibronectin (Fn). The contact angle of PAU1000 decreased both with in vitro degradation and by incubation in biological fluids. In endothelial cell culture medium the contact angle reached 60°, which is optimal for cell adhesion. Taken together, these results support the application of PAU1000 in the field of soft tissue repair as a temporary degradable scaffold.
Collapse
|
133
|
Kim YH, Baek NS, Han YH, Chung MA, Jung SD. Enhancement of neuronal cell adhesion by covalent binding of poly-d-lysine. J Neurosci Methods 2011; 202:38-44. [DOI: 10.1016/j.jneumeth.2011.08.036] [Citation(s) in RCA: 60] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2011] [Revised: 08/23/2011] [Accepted: 08/23/2011] [Indexed: 11/29/2022]
|
134
|
Wang J, Deshpande K, McKenna GB. Determination of the shear modulus of spin-coated lipid multibilayer films by the spontaneous embedment of submicrometer-sized particles. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:6846-6854. [PMID: 21553918 DOI: 10.1021/la2005375] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
A novel submicrometer particle embedment technique has been used to determine the shear modulus of 1,2-dipalmitoyl-sn-glycero-3-phosphotidylcholine (DPPC) lipid multibilayers. The depth of the spontaneous embedment of polystyrene and silica spherical particles of 200 nm nominal size has been determined from atomic force microscopy measurements on colloidal particles dispersed onto the surfaces of the DPPC multibilayers. The standard JKR model was used to relate the shear modulus of the lipid multibilayer films to the depth of embedment of the particles. The thus-determined modulus of the DPPC is within the range of reported literature values. Gold particles are also considered, and it is found that for the smallest particles (13 nm) complete engulfment by the DPPC multibilayer film takes place.
Collapse
Affiliation(s)
- Jinhua Wang
- Department of Chemical Engineering, Texas Tech University, Lubbock, Texas 79409-3121, United States
| | | | | |
Collapse
|
135
|
Nash ME, Carroll WM, Nikoloskya N, Yang R, O'Connell C, Gorelov AV, Dockery P, Liptrot C, Lyng FM, Garcia A, Rochev YA. Straightforward, one-step fabrication of ultrathin thermoresponsive films from commercially available pNIPAm for cell culture and recovery. ACS APPLIED MATERIALS & INTERFACES 2011; 3:1980-90. [PMID: 21534571 DOI: 10.1021/am200204j] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/15/2023]
Abstract
The use of thermoresponsive surfaces as platforms for cell culture and cell regeneration has been explored over the last couple of decades. Poly-N-isopropylacrylamide (pNIPAm) is a well characterized thermoresponsive polymer which has an aqueous lower critical solution temperature (LCST) in a physiologically useful range, which allows it to reversibly attract (T < 32 °C) and repel water (T > 32 °C). It is this phenomenon that is exploited in temperature-controlled cell harvesting. pNIPAm coatings are generally poorly cell compatible and a number of complex or expensive techniques have been developed in order to overcome this issue. This study seeks to design a simple one-step system whereby commercially sourced pNIPAm is used to achieve similar results. Films were deposited using the operationally simple but rheologically complex spin coating technique. Reversible temperature modulated cell adhesion was achieved using a variety of different cell lines. This system offers a simplistic and cheaper alternative to methods used elsewhere.
Collapse
Affiliation(s)
- Maria E Nash
- School of Chemistry, National University of Ireland Galway, Galway, Ireland.
| | | | | | | | | | | | | | | | | | | | | |
Collapse
|
136
|
Brunetto PS, Slenters TV, Fromm KM. In vitro Biocompatibility of New Silver(I) Coordination Compound Coated-Surfaces for Dental Implant Applications. MATERIALS 2011; 4:355-367. [PMID: 28879994 PMCID: PMC5448490 DOI: 10.3390/ma4020355] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/04/2011] [Revised: 01/19/2011] [Accepted: 01/24/2011] [Indexed: 02/05/2023]
Abstract
Biofilm formation on implant materials causes a common problem: resistance to aggressive pharmacological agents as well as host defenses. Therefore, to reduce bacterial adhesion to implant surfaces we propose to use silver(I) coordination networks as it is known that silver is the most powerful antimicrobial inorganic agent. As a model surface, self-assembled monolayers (SAMs) on gold Au(111) was used to permit permanent attachment of our silver(I) coordination networks. The surface coatings showed typical nano-structured surfaces with a good biocompatibility for soft-tissue integration with fibroblast cells.
Collapse
Affiliation(s)
- Priscilla S Brunetto
- University of Fribourg, Department of Chemistry, Chemin du Musée 9, CH-1700 Fribourg, Switzerland
| | - Tünde Vig Slenters
- University of Fribourg, Department of Chemistry, Chemin du Musée 9, CH-1700 Fribourg, Switzerland
| | - Katharina M Fromm
- University of Fribourg, Department of Chemistry, Chemin du Musée 9, CH-1700 Fribourg, Switzerland.
| |
Collapse
|
137
|
Vidyala SD, Asghar W, Iqbal SM. Biocompatible nanolayered polymerization of MEMS devices. ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY. ANNUAL INTERNATIONAL CONFERENCE 2011; 2011:2901-2904. [PMID: 22254947 DOI: 10.1109/iembs.2011.6090799] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Deposition of polymeric and biocompatible nanolayers on the solid-state substrates is done using a simple vacuum chamber. The chemical characteristics of the deposited nanolayer are analyzed using Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy. The surface morphology of the nanolayers is analyzed using contact angle goniometer and scanning electron microscopy. The coated nanolayers show excellent stability in different chemical surroundings including the physiological pH therefore making it applicable in coating 3D MEMS devices and body implants which need medicated coating. A micropore is coated with this approach and results depict uniform coating of the structure.
Collapse
Affiliation(s)
- Sri Divya Vidyala
- Bioengineering Department, Nanotechnology Research and Teaching Facility, University of Texas at Arlington, TX 76019, USA
| | | | | |
Collapse
|
138
|
Vennapusa RR, Aguilar O, Mintong JMB, Helms G, Fritz J, Lahore MF. Biomass-Adsorbent Adhesion Forces as an Useful Indicator of Performance in Expanded Beds. SEP SCI TECHNOL 2010. [DOI: 10.1080/01496395.2010.507664] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
139
|
Pereira EMA, Dario AF, França RFO, Fonseca BAL, Petri DFS. Binding of dengue virus particles and dengue proteins onto solid surfaces. ACS APPLIED MATERIALS & INTERFACES 2010; 2:2602-2610. [PMID: 20715788 DOI: 10.1021/am100442f] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The interaction between dengue virus particles (DENV), sedimentation hemagglutinin particles (SHA), dengue virus envelope protein (Eprot), and solid surfaces was investigated by means of ellipsometry and atomic force microscopy (AFM). The surfaces chosen are bare Si/SiO2 wafers and Si/SiO2 wafers covered with concanavalin A (ConA), jacalin (Jac), polystyrene (PS), or poly(styrene sulfonate) (PSS) films. Adsorption experiments at pH 7.2 and pH 3 onto all surfaces revealed that (i) adsorption of DENV particles took place only onto ConA under pH 7.2, because of specific recognition between glycans on DENV surface and ConA binding site; (ii) DENV particles did not attach to any of the surfaces at pH 3, suggesting the presence of positive charges on DENV surface at this pH, which repel the positively charged lectin surfaces; (iii) SHA particles are positively charged at pH 7.2 and pH 3 because they adhered to negatively charged surfaces at pH 7.2 and repelled positively charged layers at pH 3; and (iv) SHA particles carry polar groups on the surface because they attached to silanol surfaces at pH 3 and avoided hydrophobic PS films at pH 3 and pH 7.2. The adsorption behavior of Eprot at pH 7.2 revealed affinity for ConA>Jac>PSS>PS≈bare Si/SiO2 layers. These findings indicate that selectivity of the Eprot adsorption is higher when it is part of virus structure than when it is free in solution. The correlation between surface energy values determined by means of contact angle measurements and DENV, SHA, or Eprot adsorption behavior was used to understand the intermolecular forces at the interfaces. A direct correlation was not found because the contributions from surface energy were probably surpassed by specific contributions.
Collapse
Affiliation(s)
- Edla M A Pereira
- Instituto de Química, Universidade de São Paulo, P.O. Box 26077, 05513-970 São Paulo, Brazil
| | | | | | | | | |
Collapse
|
140
|
Delivopoulos E, Murray AF, Curtis JC. Effects of parylene-C photooxidation on serum-assisted glial and neuronal patterning. J Biomed Mater Res A 2010; 94:47-58. [PMID: 20091707 DOI: 10.1002/jbm.a.32662] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
The increasing use of patterned neural networks in multielectrode arrays and similar devices drives the constant development and evaluation of new biomaterials. Recently, we presented a promising technique to guide neurons and glia reliably and effectively. Parylene-C, a common hydrophobic polymer, was photolithographically patterned on silicon oxide (SiO(2)) and subsequently activated via immersion in serum. In this article, we explore the effects of ultraviolet (UV)-induced oxidation on parylene's ability to pattern neurons and glia. We exposed parylene-C stripe patterns to increasing levels of UV radiation and found a dose-dependent reduction in the total mass of patterned cells, as well as a gradual loss of glial and neuronal conformity to the patterns. In contrast, nonirradiated patterns had superior patterning results and increased presence of cells. The reduced cell adhesion and patterning after the formation of aldehyde and carboxyl groups on UV-radiated parylene-C supports our hypothesis that cell adhesion and growth on parylene is facilitated by hydrophobic adsorption of serum proteins. We conclude that unlike other cell patterning schemes, our technique does not rely on photooxidation of the polymer. Nonetheless, the precise control of oxygenated groups on parylene could pave the way for the differential binding of proteins and other molecules on the surface, aiding in the adhesion of alternative cell types. (c) 2010 Wiley Periodicals, Inc. J Biomed Mater Res, 2010.
Collapse
Affiliation(s)
- Evangelos Delivopoulos
- Institute for Integrated Micro and Nano Systems, School of Engineering and Electronics, The University of Edinburgh, Edinburgh, United Kingdom.
| | | | | |
Collapse
|
141
|
Cell architecture–cell function dependencies on titanium arrays with regular geometry. Biomaterials 2010; 31:5729-40. [DOI: 10.1016/j.biomaterials.2010.03.073] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2010] [Accepted: 03/29/2010] [Indexed: 11/18/2022]
|
142
|
Dario AF, de Paula RC, Paula HC, Feitosa JP, Petri DF. Effect of solvent on the adsorption behavior and on the surface properties of Sterculia striata polysaccharide. Carbohydr Polym 2010. [DOI: 10.1016/j.carbpol.2010.02.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
143
|
|
144
|
Cai N, Wong CC, Gong YX, Tan SCW, Chan V, Liao K. Modulating cell adhesion dynamics on carbon nanotube monolayer engineered with extracellular matrix proteins. ACS APPLIED MATERIALS & INTERFACES 2010; 2:1038-47. [PMID: 20423124 DOI: 10.1021/am9008117] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Although it has been demonstrated that carbon nanotubes (CNTs) may have potentials for tissue engineering applications because of their unparalleled physical properties, little has been known on the cell adhesion mechanisms on model CNT monolayer pertaining to the design of novel cell therapeutics device. In this study, the adhesion dynamics of primary porcine esophageal fibroblasts (PEFs) on CNT monolayer were elucidated with confocal reflectance interference contrast microscopy (C-RICM) integrating with phase contrast microscopy. Moreover, CNT monolayer (CNT-ML) was functionalized with two typical extracellular matrix (ECM) proteins including collagen type I (COL) and fibronectin (FN) in order to promote its biocompatibility. First, it is shown by atomic force microscopy that the topographical features of CNT-ML were dependent on the types of immobilized ECM protein. Second, significant time lag in adhesion contact evolution (around 10 min) for PEFs was found on both CNT-ML and CNT-COL compared to the negligible time lag on CNT-FN. It was found that adhesion energy of PEFs on the CNT-COL and CNT-FN surfaces reached steady state at 60 and 30 min after cell seeding compared to 70 min on CNT-ML surface. At steady state, the adhesion energy of PEFs on the CNT-COL and CNT-FN surfaces was about twice as much than that on the CNT-ML surface. Moreover, immobilization of collagen or fibronectin on CNT monolayer led to an increase in seeding efficiency and proliferation rate of PEFs. Scanning electron microscopy and immunostaining together demonstrated that PEFs displayed an elongated morphology and highly polarized actin network on both CNT-COL and CNT-FN surfaces, whereas PEFs displayed nonuniform cell morphology and actin organization on the CNT-ML surface. Overall, our results demonstrated that the biophysical responses and biological behavior of PEFs on unmodified or functionalized CNT monolayer were different. Functionalization of CNT through extracellular matrix protein immobilization effectively promotes cell adhesion and proliferation, which may provide information for designing CNT-based biomaterials or novel cell therapeutics devices in biomedical engineering.
Collapse
Affiliation(s)
- Ning Cai
- School of Chemical and Biomedical Engineering, Nanyang Technological University, Singapore
| | | | | | | | | | | |
Collapse
|
145
|
Vlad MD, Valle LJ, Poeată I, López J, Torres R, Barracó M, Fernández E. Biphasic calcium sulfate dihydrate/iron-modified alpha-tricalcium phosphate bone cement for spinal applications:
in vitro
study. Biomed Mater 2010; 5:25006. [DOI: 10.1088/1748-6041/5/2/025006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
146
|
Pereira-Rodrigues N, Poleni PE, Guimard D, Arakawa Y, Sakai Y, Fujii T. Modulation of hepatocarcinoma cell morphology and activity by parylene-C coating on PDMS. PLoS One 2010; 5:e9667. [PMID: 20300511 PMCID: PMC2838777 DOI: 10.1371/journal.pone.0009667] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2009] [Accepted: 02/15/2010] [Indexed: 01/07/2023] Open
Abstract
Background The ability to understand and locally control the morphogenesis of mammalian cells is a fundamental objective of cell and developmental biology as well as tissue engineering research. We present parylene-C (ParC) deposited on polydimethylsiloxane (PDMS) as a new substratum for in vitro advanced cell culture in the case of Human Hepatocarcinoma (HepG2) cells. Principal Findings Our findings establish that the intrinsic properties of ParC-coated PDMS (ParC/PDMS) influence and modulate initial extracellular matrix (ECM; here, type-I collagen) surface architecture, as compared to non-coated PDMS substratum. Morphological changes induced by the presence of ParC on PDMS were shown to directly affect liver cell metabolic activity and the expression of transmembrane receptors implicated in cell adhesion and cell-cell interaction. These changes were characterized by atomic force microscopy (AFM), which elucidated differences in HepG2 cell adhesion, spreading, and reorganization into two- or three-dimensional structures by neosynthesis of ECM components. Local modulation of cell aggregation was successfully performed using ParC/PDMS micropatterns constructed by simple microfabrication. Conclusion/Significance We demonstrated for the first time the modulation of HepG2 cells' behavior in relation to the intrinsic physical properties of PDMS and ParC, enabling the local modulation of cell spreading in a 2D or 3D manner by simple microfabrication techniques. This work will provide promising insights into the development of cell-based platforms that have many applications in the field of in vitro liver tissue engineering, pharmacology and therapeutics.
Collapse
Affiliation(s)
| | - Paul-Emile Poleni
- CIRMM, Institute of Industrial Science, University of Tokyo, Komaba, Meguro-ku, Tokyo, Japan
- LIMMS/CNRS-IIS, Institute of Industrial Science, University of Tokyo, Komaba, Meguro-ku, Tokyo, Japan
- Institute of Industrial Science, University of Tokyo, Komaba, Meguro-ku, Tokyo, Japan
- * E-mail:
| | - Denis Guimard
- Institute of Industrial Science, University of Tokyo, Komaba, Meguro-ku, Tokyo, Japan
| | - Yasuhiko Arakawa
- Institute of Industrial Science, University of Tokyo, Komaba, Meguro-ku, Tokyo, Japan
| | - Yasuyuki Sakai
- LIMMS/CNRS-IIS, Institute of Industrial Science, University of Tokyo, Komaba, Meguro-ku, Tokyo, Japan
- Institute of Industrial Science, University of Tokyo, Komaba, Meguro-ku, Tokyo, Japan
| | - Teruo Fujii
- CIRMM, Institute of Industrial Science, University of Tokyo, Komaba, Meguro-ku, Tokyo, Japan
- LIMMS/CNRS-IIS, Institute of Industrial Science, University of Tokyo, Komaba, Meguro-ku, Tokyo, Japan
| |
Collapse
|
147
|
Casarano R, Bentini R, Bueno VB, Iacovella T, Monteiro FB, Iha FA, Campa A, Petri DF, Jaffe M, Catalani LH. Enhanced fibroblast adhesion and proliferation on electrospun fibers obtained from poly(isosorbide succinate-b-l-lactide) block copolymers. POLYMER 2009. [DOI: 10.1016/j.polymer.2009.10.048] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
148
|
Mao X, Peng H, Ling J, Friis T, Whittaker AK, Crawford R, Xiao Y. Enhanced human bone marrow stromal cell affinity for modified poly(l-lactide) surfaces by the upregulation of adhesion molecular genes. Biomaterials 2009; 30:6903-11. [DOI: 10.1016/j.biomaterials.2009.09.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2009] [Accepted: 09/04/2009] [Indexed: 10/20/2022]
|
149
|
Waugh D, Lawrence J, Morgan D, Thomas C. Interaction of CO2 laser-modified nylon with osteoblast cells in relation to wettability. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2009. [DOI: 10.1016/j.msec.2009.07.020] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
150
|
Lim JI, Lee YK. Oleic acid-added embedding medium for histological analysis of hard tissue. Microsc Res Tech 2009; 72:766-71. [DOI: 10.1002/jemt.20738] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|