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Gayathri K, Abhinand P, Gayathri V, Prasanna Lakshmi V, Chamundeeswari D, Jiang L, Tian Z, Malathi N. Computational analysis of phytocompounds in Centella asiatica for its antifibrotic and drug-likeness properties - Herb to drug study. Heliyon 2024; 10:e33762. [PMID: 39027607 PMCID: PMC11255509 DOI: 10.1016/j.heliyon.2024.e33762] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2024] [Revised: 06/24/2024] [Accepted: 06/26/2024] [Indexed: 07/20/2024] Open
Abstract
Oral submucous fibrosis (OSMF) is a potentially malignant disorder with no permanent cure that affects the quality of life due to trismus. Computational pharmacology has accelerated the discovery of drug candidates for the treatment of incurable diseases. The present study aimed to screen the compounds of the miracle herb Centella asiatica with drug-likeness properties based on the absorption, distribution, metabolism, and excretion (ADME) properties. The pharmacological actions of these screened compounds against OSMF were identified by network pharmacology, gene ontology, pathway enrichment analysis, molecular docking, and simulation. Fifteen drug-like ligands were identified after virtual screening viz; asiatic acid, kaempferol, quercetin, luteolin, apigenin, bayogenin, gallic acid, isothankunic acid, madecassic acid, madasiatic acid, arjunolic acid, terminolic acid, catechin, epicatechin, and nobiletin. 850 potential targets were predicted for the ligands, which were analyzed against 354 proteins associated with OSMF. Compound pathway analysis and disease pathway analysis identified 53 common proteins. The GO enrichment analysis identified 472 biological process terms, 76 molecular function terms, and 44 cellular component terms. Pathway enrichment analysis predicted 142 KEGG pathways, 35 Biocarta pathways, and 236 Reactome pathways for the target proteins. The analysis revealed that the herb targets crucial events of fibrosis such as inflammation, oxidative stress, apoptosis, collagen deposition, and epithelial-mesenchymal transition. The common 53 proteins were used for protein-protein interaction (PPI) network analysis, which revealed 4 key proteins interacting with the phytocompounds viz; transforming growth factor-β1 (TGF-β1), mothers against decapentaplegic-3 (SMAD-3), mitogen-activated protein kinase-1 (MAPK-1) and proto-oncogene tyrosine-protein kinase (SRC). Molecular docking revealed that all ligands had a good binding affinity to the target proteins. Bayogenin had the highest binding affinity towards MAPK-1 (-9.7 kcal/mol), followed by isothankunic acid towards SRC protein (-9.3 kcal/mol). Madasiatic acid had the highest binding affinity to SMAD-3 (-7.6 kcal/mol) and TGF-β1 (-7.1 kcal/mol). Molecular dynamics simulation demonstrated stable ligand protein interactions of bayogenin and MAPK complex, isothankunic acid and SRC complex. This in silico study is the first to identify potential phytochemicals present in Centella asiatica and their target molecules, which might be responsible for reversing OSMF.
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Affiliation(s)
- K. Gayathri
- Faculty of Biomedical Sciences, Sri Ramachandra Institute of Higher Education and Research, Porur, Chennai, 600116, India
- Department of Oral Pathology and Microbiology, Sri Ramachandra Dental College, Sri Ramachandra Institute of Higher Education and Research, Porur, Chennai, 600116, India
| | - P.A. Abhinand
- Department of Bioinformatics, Faculty of Engineering and Technology, Sri Ramachandra Institute of Higher Education & Research, Porur, Chennai, 600116, India
| | - V. Gayathri
- Centre for Toxicology and Developmental Research, Sri Ramachandra Institute of Higher Education and Research, Porur, Chennai, 600116, India
| | - V. Prasanna Lakshmi
- Department of Bioinformatics, Faculty of Engineering and Technology, Sri Ramachandra Institute of Higher Education & Research, Porur, Chennai, 600116, India
| | - D. Chamundeeswari
- Faculty of Pharmacy, Meenakshi Academy of Higher Education and Research, Chennai, India
| | - Li Jiang
- Department of Oral Pathology, The Ninth People's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Zhen Tian
- Department of Oral Pathology, The Ninth People's Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - N. Malathi
- Department of Oral Pathology and Microbiology, Sri Ramachandra Dental College, Sri Ramachandra Institute of Higher Education and Research, Porur, Chennai, 600116, India
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D'Amico L, Svetlove A, Longo E, Meyer R, Senigagliesi B, Saccomano G, Nolte P, Wagner WL, Wielpütz MO, Leitz DHW, Duerr J, Mall MA, Casalis L, Köster S, Alves F, Tromba G, Dullin C. Characterization of transient and progressive pulmonary fibrosis by spatially correlated phase contrast microCT, classical histopathology and atomic force microscopy. Comput Biol Med 2024; 169:107947. [PMID: 38211385 DOI: 10.1016/j.compbiomed.2024.107947] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2023] [Revised: 12/07/2023] [Accepted: 01/01/2024] [Indexed: 01/13/2024]
Abstract
Pulmonary fibrosis (PF) is a severe and progressive condition in which the lung becomes scarred over time resulting in pulmonary function impairment. Classical histopathology remains an important tool for micro-structural tissue assessment in the diagnosis of PF. A novel workflow based on spatial correlated propagation-based phase-contrast micro computed tomography (PBI-microCT), atomic force microscopy (AFM) and histopathology was developed and applied to two different preclinical mouse models of PF - the commonly used and well characterized Bleomycin-induced PF and a novel mouse model for progressive PF caused by conditional Nedd4-2 KO. The aim was to integrate structural and mechanical features from hallmarks of fibrotic lung tissue remodeling. PBI-microCT was used to assess structural alteration in whole fixed and paraffin embedded lungs, allowing for identification of fibrotic foci within the 3D context of the entire organ and facilitating targeted microtome sectioning of planes of interest for subsequent histopathology. Subsequently, these sections of interest were subjected to AFM to assess changes in the local tissue stiffness of previously identified structures of interest. 3D whole organ analysis showed clear morphological differences in 3D tissue porosity between transient and progressive PF and control lungs. By integrating the results obtained from targeted AFM analysis, it was possible to discriminate between the Bleomycin model and the novel conditional Nedd4-2 KO model using agglomerative cluster analysis. As our workflow for 3D spatial correlation of PBI, targeted histopathology and subsequent AFM is tailored around the standard procedure of formalin-fixed paraffin-embedded (FFPE) tissue specimens, it may be a powerful tool for the comprehensive tissue assessment beyond the scope of PF and preclinical research.
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Affiliation(s)
- Lorenzo D'Amico
- University of Trieste, Department of Physics, Via Alfonso Valerio 2, Trieste, 34127, Italy; Elettra Sincrotrone Trieste S.C.p.A., s.s. 14 km 163, 500 in Area Science Park, Basovizza, 34149, Italy
| | - Angelika Svetlove
- Translational Molecular Imaging, Max-Plank-Institute for Multidisciplinary Sciences, Hermann-Rein-Straße 3, Göttingen, 37075, Germany; Cluster of Excellence "Multiscale Bioimaging: from Molecular Machines to Networks of Excitable Cells" (MBExC), Robert-Koch-Str. 40, Göttingen, 37075, Germany
| | - Elena Longo
- Elettra Sincrotrone Trieste S.C.p.A., s.s. 14 km 163, 500 in Area Science Park, Basovizza, 34149, Italy
| | - Ruth Meyer
- Institute for X-ray Physics, University of Göttingen, Friedrich-Hund-Platz 1, Göttingen, 37077, Germany
| | - Beatrice Senigagliesi
- Interdisciplinary Institute for Neuroscience, University of Bordeaux-UMR 5297 and CNRS, 146 Rue Léo Saignat, Bordeaux, 33000, France
| | - Giulia Saccomano
- Elettra Sincrotrone Trieste S.C.p.A., s.s. 14 km 163, 500 in Area Science Park, Basovizza, 34149, Italy; University of Trieste, Department of Architecture and Engineering, Via Alfonso Valerio 6/1, Trieste, 34127, Italy
| | - Philipp Nolte
- Faculty of Engineering and Health, University of Applied Sciences and Arts, Göttingen, 37085, Germany; Institute for Diagnostic and Interventional Radiology, University Medical Center, Göttingen, 37075, Germany
| | - Willi L Wagner
- Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg, Germany
| | - Mark O Wielpütz
- Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg, Germany
| | - Dominik H W Leitz
- Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine, Charite - University Hospital Berlin, Berlin, 13353, Germany; German Center for Lung Research (DZL), associated partner site, Berlin, Germany; Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Berlin, 10117, Germany
| | - Julia Duerr
- Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine, Charite - University Hospital Berlin, Berlin, 13353, Germany; German Center for Lung Research (DZL), associated partner site, Berlin, Germany; Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Berlin, 10117, Germany
| | - Marcus A Mall
- Department of Pediatric Respiratory Medicine, Immunology and Critical Care Medicine, Charite - University Hospital Berlin, Berlin, 13353, Germany; German Center for Lung Research (DZL), associated partner site, Berlin, Germany; Berlin Institute of Health at Charité - Universitätsmedizin Berlin, Berlin, 10117, Germany
| | - Loredana Casalis
- Elettra Sincrotrone Trieste S.C.p.A., s.s. 14 km 163, 500 in Area Science Park, Basovizza, 34149, Italy
| | - Sarah Köster
- Cluster of Excellence "Multiscale Bioimaging: from Molecular Machines to Networks of Excitable Cells" (MBExC), Robert-Koch-Str. 40, Göttingen, 37075, Germany; Institute for X-ray Physics, University of Göttingen, Friedrich-Hund-Platz 1, Göttingen, 37077, Germany
| | - Frauke Alves
- Translational Molecular Imaging, Max-Plank-Institute for Multidisciplinary Sciences, Hermann-Rein-Straße 3, Göttingen, 37075, Germany; Cluster of Excellence "Multiscale Bioimaging: from Molecular Machines to Networks of Excitable Cells" (MBExC), Robert-Koch-Str. 40, Göttingen, 37075, Germany; Institute for Diagnostic and Interventional Radiology, University Medical Center, Göttingen, 37075, Germany; Department for Haematology and Medical Oncology, University Medical Center, Göttingen, 37075, Germany
| | - Giuliana Tromba
- Elettra Sincrotrone Trieste S.C.p.A., s.s. 14 km 163, 500 in Area Science Park, Basovizza, 34149, Italy
| | - Christian Dullin
- Elettra Sincrotrone Trieste S.C.p.A., s.s. 14 km 163, 500 in Area Science Park, Basovizza, 34149, Italy; Translational Molecular Imaging, Max-Plank-Institute for Multidisciplinary Sciences, Hermann-Rein-Straße 3, Göttingen, 37075, Germany; Institute for Diagnostic and Interventional Radiology, University Medical Center, Göttingen, 37075, Germany; Diagnostic and Interventional Radiology, University Hospital Heidelberg, Heidelberg, Germany.
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Cho DH, Aguayo S, Cartagena-Rivera AX. Atomic force microscopy-mediated mechanobiological profiling of complex human tissues. Biomaterials 2023; 303:122389. [PMID: 37988897 PMCID: PMC10842832 DOI: 10.1016/j.biomaterials.2023.122389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 10/30/2023] [Accepted: 11/04/2023] [Indexed: 11/23/2023]
Abstract
Tissue mechanobiology is an emerging field with the overarching goal of understanding the interplay between biophysical and biochemical responses affecting development, physiology, and disease. Changes in mechanical properties including stiffness and viscosity have been shown to describe how cells and tissues respond to mechanical cues and modify critical biological functions. To quantitatively characterize the mechanical properties of tissues at physiologically relevant conditions, atomic force microscopy (AFM) has emerged as a highly versatile biomechanical technology. In this review, we describe the fundamental principles of AFM, typical AFM modalities used for tissue mechanics, and commonly used elastic and viscoelastic contact mechanics models to characterize complex human tissues. Furthermore, we discuss the application of AFM-based mechanobiology to characterize the mechanical responses within complex human tissues to track their developmental, physiological/functional, and diseased states, including oral, hearing, and cancer-related tissues. Finally, we discuss the current outlook and challenges to further advance the field of tissue mechanobiology. Altogether, AFM-based tissue mechanobiology provides a mechanistic understanding of biological processes governing the unique functions of tissues.
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Affiliation(s)
- David H Cho
- Section on Mechanobiology, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD, USA
| | - Sebastian Aguayo
- Dentistry School, Faculty of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile; Schools of Engineering, Medicine, and Biological Sciences, Institute for Biological and Medical Engineering, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Alexander X Cartagena-Rivera
- Section on Mechanobiology, National Institute of Biomedical Imaging and Bioengineering, National Institutes of Health, Bethesda, MD, USA.
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Xu HQ, Guo ZX, Yan JF, Wang SY, Gao JL, Han XX, Qin WP, Lu WC, Gao CH, Zhu WW, Fu YT, Jiao K. Fibrotic Matrix Induces Mesenchymal Transformation of Epithelial Cells in Oral Submucous Fibrosis. THE AMERICAN JOURNAL OF PATHOLOGY 2023; 193:1208-1222. [PMID: 37328100 DOI: 10.1016/j.ajpath.2023.05.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Revised: 05/17/2023] [Accepted: 05/30/2023] [Indexed: 06/18/2023]
Abstract
Oral submucous fibrosis (OSF) is a potentially malignant disorder of the oral mucosa; however, whether and how the fibrotic matrix of OSF is involved in the malignant transformation of epithelial cells remains unknown. Herein, oral mucosa tissue from patients with OSF, OSF rat models, and their controls were used to observe the extracellular matrix changes and epithelial-mesenchymal transformation (EMT) in fibrotic lesions. Compared with controls, oral mucous tissues from patients with OSF showed an increased number of myofibroblasts, a decreased number of blood vessels, and increased type I and type III collagen levels. In addition, the oral mucous tissues from humans and OSF rats showed increased stiffness, accompanied by increased EMT activities of epithelial cells. The EMT activities of stiff construct-cultured epithelial cells were increased significantly by exogenous piezo-type mechanosensitive ion channel component 1 (Piezo1) activation, and decreased by yes-associated protein (YAP) inhibition. During ex vivo implantation, oral mucosal epithelial cells of the stiff group showed increased EMT activities and increased levels of Piezo1 and YAP compared with those in the sham and soft groups. These results indicate that increased stiffness of the fibrotic matrix in OSF led to increased proliferation and EMT of mucosal epithelial cells, in which the Piezo1-YAP signal transduction is important.
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Affiliation(s)
- Hao-Qing Xu
- The College of Life Science, Northwest University, Xi'an, China; Department of Stomatology, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China; State Key Laboratory of Stomatognathic Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Zhen-Xing Guo
- Department of Stomatology, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China; State Key Laboratory of Stomatognathic Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Jian-Fei Yan
- Department of Stomatology, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China; State Key Laboratory of Stomatognathic Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Shu-Yan Wang
- Department of Stomatology, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China; State Key Laboratory of Stomatognathic Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Jia-Lu Gao
- Department of Stomatology, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China; State Key Laboratory of Stomatognathic Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Xiao-Xiao Han
- The College of Life Science, Northwest University, Xi'an, China; Department of Stomatology, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China; State Key Laboratory of Stomatognathic Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Wen-Pin Qin
- Department of Stomatology, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China; State Key Laboratory of Stomatognathic Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Wei-Cheng Lu
- Department of Stomatology, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China; State Key Laboratory of Stomatognathic Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Chang-He Gao
- Department of Stomatology, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China; State Key Laboratory of Stomatognathic Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, School of Stomatology, The Fourth Military Medical University, Xi'an, China; The Third Affiliated Hospital of Xinxiang Medical University, Xinxiang, China
| | - Wei-Wei Zhu
- The College of Life Science, Northwest University, Xi'an, China; Department of Stomatology, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China; State Key Laboratory of Stomatognathic Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Yu-Tong Fu
- The College of Life Science, Northwest University, Xi'an, China; Department of Stomatology, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China; State Key Laboratory of Stomatognathic Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, School of Stomatology, The Fourth Military Medical University, Xi'an, China
| | - Kai Jiao
- Department of Stomatology, Tangdu Hospital, The Fourth Military Medical University, Xi'an, China; State Key Laboratory of Stomatognathic Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, School of Stomatology, The Fourth Military Medical University, Xi'an, China.
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Lacoste-Ferré MH, Ober C, Samouillan V. Viscoelastic behavior of oral mucosa. A rheological study using small-amplitude oscillatory shear tests. J Mech Behav Biomed Mater 2023; 143:105898. [PMID: 37156074 DOI: 10.1016/j.jmbbm.2023.105898] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Revised: 05/02/2023] [Accepted: 05/04/2023] [Indexed: 05/10/2023]
Abstract
The purpose of this work was to determine the viscoelastic behavior of porcine and human oral mucosa under physiological conditions of temperature, hydration and chewing. The linear elastic and viscous shear moduli of these soft tissues were determined by small-amplitude oscillatory shear (SAOS) tests at masticatory frequency using a stress-controlled rheometer equipped with an immersion cell on punched biopsies 8 mm in diameter. Non physiological conditions of temperature were also used to access other parameters such as the denaturation temperature of collagen. First, the different parameters such as normal force, frequency and maximal strain were adjusted to obtain reliable data on porcine mucosa. The optimal normal force was 0.1N and the linear viscoelastic limit was found for a strain amplitude of 0.5% for both 0.1 and 1 Hz. The storage moduli of porcine mucosa, ranging from 5 to 16 kPa, were in the same range as cutaneous tissues determined by SAOS at equivalent frequencies. The storage modulus, superior to the loss modulus G″, indicates a predominant elastic contribution to shear stress in chewing conditions. Second, this protocol evidenced an influence of the anatomic site of the mouth on the viscoelastic behavior of porcine mucosa, mandibular biopsies having higher storage moduli than maxillary biopsies. Temperature scans showed the mechanical manifestation of collagen denaturation in the 60-70 °C range as previous calorimetric analyses. Finally, this mechanical protocol was successfully adapted to characterize human mucosa in an elderly population. It was shown that the elastic modulus is impacted by local inflammation (gingivitis), decreasing significantly from 6 ± 1.4 kPa to 2.5 ± 0.3 kPa.
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Affiliation(s)
- Marie-Hélène Lacoste-Ferré
- CIRIMAT UMR 5085, Université de Toulouse, Université Paul Sabatier, 118 Route de Narbonne, 3106, Toulouse Cedex, France; Gérontopôle- CHU Toulouse, Hôpital Garonne, 224 Avenue de Casselardit, TSA 40031, 31059, Toulouse Cedex 9, France
| | - Camille Ober
- CIRIMAT UMR 5085, Université de Toulouse, Université Paul Sabatier, 118 Route de Narbonne, 3106, Toulouse Cedex, France
| | - Valérie Samouillan
- CIRIMAT UMR 5085, Université de Toulouse, Université Paul Sabatier, 118 Route de Narbonne, 3106, Toulouse Cedex, France.
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Haluszka D, Aminmansour S, Tóth P, Aminmansour S, Kellermayer M. Nanomechanical and Nonlinear Optical Properties of Glycated Dental Collagen. J Dent Res 2022; 101:1510-1516. [PMID: 35722958 DOI: 10.1177/00220345221100404] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Nonenzymatic glycation is a multistep, slow reaction between reducing sugars and free amino groups of long-lived proteins, which affects the structural and mechanical properties of collagen-rich tissues via accumulation of advanced glycation end products (AGEs). Dental collagen is exposed to glycation as part of the natural aging process. However, in case of chronically high blood glucose, the process can be accelerated, resulting in premature stiffening of dentin, leading to tooth fragility. The molecular mechanisms whereby collagen glycation evokes the loss of mechanical stability in teeth are currently unknown. In this study, we used 2-photon and atomic force microscopies to correlate structural and mechanical changes in dental collagen induced by in vitro glycation. Young tooth samples were demineralized and cut longitudinally into 30-µm sections, then artificially glycated in 0.5 M ribose solution for 10 wk. Two-photon microscopy analysis showed that both the autofluorescence and second harmonic-generated (SHG) signal intensities of glycated samples were significantly greater than those of the controls. Regarding the structural alteration of individual collagen fibers, a remarkable increase could be measured in fiber length of ribose-treated sections. Furthermore, nanoindentation of intertubular dentin regions revealed significantly higher stiffness in the ribose-treated samples, which points at a significant accumulation of AGEs. Thus, collagen glycation occurring during sustained exposure to reducing sugars leads to profound structural and mechanical changes in dentin. Besides the numerous oral complications associated with type 2 diabetes, the premature structural and mechanical deterioration of dentin may also play an important role in dental pathology.
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Affiliation(s)
- D Haluszka
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - S Aminmansour
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - P Tóth
- Department of Biophysics, University of Pécs, Faculty of Medicine, Pécs, Hungary
| | - S Aminmansour
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
| | - M Kellermayer
- Department of Biophysics and Radiation Biology, Semmelweis University, Budapest, Hungary
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Baldwin A, Hartl M, Tschaikowsky M, Balzer BN, Booth BW. Degradation and release of tannic acid from an injectable tissue regeneration bead matrix in vivo. J Biomed Mater Res B Appl Biomater 2021; 110:1165-1177. [PMID: 34904786 DOI: 10.1002/jbm.b.34990] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 11/03/2021] [Accepted: 11/27/2021] [Indexed: 12/26/2022]
Abstract
The development of multifunctional biomaterials as both tissue regeneration and drug delivery devices is currently a major focus in biomedical research. Tannic Acid (TA), a naturally occurring plant polyphenol, displays unique medicinal abilities as an antioxidant, an antibiotic, and as an anticancer agent. TA has applications in biomaterials acting as a crosslinker in polymer hydrogels improving thermal stability and mechanical properties. We have developed injectable cell seeded collagen beads crosslinked with TA for breast reconstruction and anticancer activity following lumpectomy. This study determined the longevity of the bead implants by establishing a degradation time line and TA release profile in vivo. Beads crosslinked with 0.1% TA and 1% TA were compared to observe the differences in TA concentration on degradation and release. We found collagen/TA beads degrade at similar rates in vivo, yet are resistant to complete degradation after 16 weeks. TA is released over time in vivo through diffusion and cellular activity. Changes in mechanical properties in collagen/TA beads before implantation to after 8 weeks in vivo also indicate loss of TA over a longer period of time. Elastic moduli decreased uniformly in both 0.1% and 1% TA beads. This study establishes that collagen/TA materials can act as a drug delivery system, rapidly releasing TA within the first week following implantation. However, the beads retain TA long term allowing them to resist degradation and remain in situ acting as a cell scaffold and tissue filler. This confirms its potential use as an anticancer and minimally invasive breast reconstructive device following lumpectomy.
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Affiliation(s)
- Andrew Baldwin
- Department of Bioengineering, Clemson University, Clemson, South Carolina, USA
| | | | - Mathaeus Tschaikowsky
- Institue of Physical Chemistry, University of Freiburg, Freiburg, Germany.,G.E.R.N. Center for Tissue Replacement, Regeneration & Neogenesis, Department of Orthopedics and Trauma Surgery, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Bizan N Balzer
- Institue of Physical Chemistry, University of Freiburg, Freiburg, Germany.,Cluster of Excellence livMatS @ FIT - Freiburg Center for Interactive Materials and Bioinspired Technologies, Freiburg, Germany.,Freiburg Materials Research Center (FMF), Albert Ludwig University of Freiburg, Freiburg, Germany
| | - Brian W Booth
- Department of Bioengineering, Clemson University, Clemson, South Carolina, USA
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Quantitative nanomechanical properties evaluation of a family of β-sheet peptide fibres using rapid bimodal AFM. J Mech Behav Biomed Mater 2021; 124:104776. [PMID: 34479107 DOI: 10.1016/j.jmbbm.2021.104776] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 07/16/2021] [Accepted: 08/10/2021] [Indexed: 11/20/2022]
Abstract
Self-assembling peptides have become important building blocks for materials design (e.g. hydrogels) and play a crucial role in a range of diseases including Alzheimer and Parkinson. In this context, accessing the nanomechanical properties of ubiquitous β-sheet rich nanofibres (e.g.: amyloids) is key to the formulation of materials and design of therapies. Although the bulk mechanical properties of hydrogels can easily be accessed using common techniques and equipment, the mechanical properties of their constituent fibres, in particular if with radii in the nanometre scale, are more challenging to measure and estimate. In this work we show for the first time how the rapid nanomechanical mapping technique: amplitude modulation-frequency modulation (AM-FM), can be used to determine the heights, Young's moduli and viscosity coefficients of a series of β-sheet peptide nanofibres with high statistical confidence. Our results show how peptide sequence and in particular length, charge and interaction with the substrate affect the viscoelastic properties of the peptide fibres.
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Role of Yes-associated protein and transcriptional coactivator with PDZ-binding motif in the malignant transformation of oral submucous fibrosis. Arch Oral Biol 2021; 128:105164. [PMID: 34044344 DOI: 10.1016/j.archoralbio.2021.105164] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 05/18/2021] [Accepted: 05/19/2021] [Indexed: 02/07/2023]
Abstract
OBJECTIVE(S) The objective of the present manuscript is to elucidate the role of matrix stiffness in the malignant transformation of oral submucous fibrosis. DESIGN The role of matrix stiffness in several cancers including oral cancer was reviewed with a tailored search strategy using relevant keywords as per the Medline format. The role of molecular mediators, Yes-associated protein 1 (YAP) and transcriptional coactivator with PDZ-binding motif (TAZ) was weighed in the context of OSF along two distinct pathways. RESULTS Increased matrix stiffness activates the transcriptional coactivators, YAP and TAZ shuttling between the nucleus and cytoplasm. YAP and TAZ, serve as mechanical transducers in promoting cell migration, invasion and epithelial-mesenchymal transition (EMT). The hypoxic microenvironment in the advanced stage of OSF promotes the migratory phenotype through mechanical memory. CONCLUSIONS Reprogramming of a stiff matrix has the potential to restore the Hippo-YAP/TAZ tumor suppressor pathway and reverse fibrosis-associated tumor development.
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Nawn D, Pratiher S, Chattoraj S, Chakraborty D, Pal M, Paul RR, Dutta S, Chatterjee J. Multifractal Alterations in Oral Sub-Epithelial Connective Tissue During Progression of Pre-Cancer and Cancer. IEEE J Biomed Health Inform 2021; 25:152-162. [PMID: 32750913 DOI: 10.1109/jbhi.2020.2997875] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Bright-field microscopy (BFM) encrypts the optical transillumination profile of the transmitted light attenuated by the complex micro-structural tissue convolutions, manifested by the dense and compact regions of the specimen under examination. The connotations of idiosyncratic tissue interaction dynamics with the onset of pre-cancerous activity are encoded in the BFM acquired oral mucosa histopathological images (OMHI). In the present study, our analysis is focused on the sub-epithelium region of the oral mucosa, which has high clinical significance but sparsely explored in the literature from the textural domain. Histopathology being the gold-standard technique till date, we have used the light microscopic histopathology images for tissue characterization. The tissue-index transmission patches (TITP) from the sub-epithelium region are cropped under the guidance of oral onco-pathologists. After that, the TITPs are characterized for its multi-scale spatial-deformation dynamics, while keeping the intrinsic anisotropic geometry, and local contour connectivity within tolerable limits. With recent studies exhibiting multifractal's potency in diverse biological system analysis, here, we exploit the 2D multifractal detrended fluctuation analysis (2D-MFDFA) on TITPs for exploring a discriminative set of multifractal signatures for healthy, oral potentially malignant disorders and oral cancer tissue sample. The predictive model's competency is validated on an experimentally collected corpus of TITP samples and substantiated via confirmatory data statistics and analysis, showing its inter-class segregation efficacy. Moreover, the 2D-MFDFA analysis evinces the complex multifractal patterns in TITPs, which is due to the presence of composite long-range correlations in the oral mucosa tissue fabric.
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11
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Chatterjee R, Ghosh B, Mandal M, Nawn D, Banerjee S, Pal M, Paul RR, Banerjee S, Chatterjee J. Pathophysiological relationship between hypoxia associated oxidative stress, Epithelial-mesenchymal transition, stemness acquisition and alteration of Shh/ Gli-1 axis during oral sub-mucous fibrosis and oral squamous cell carcinoma. Eur J Cell Biol 2020; 100:151146. [PMID: 33418093 DOI: 10.1016/j.ejcb.2020.151146] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Revised: 12/08/2020] [Accepted: 12/16/2020] [Indexed: 02/07/2023] Open
Abstract
Oral sub-mucous fibrosis (OSF) is a pathophysiological state of oral cavity or oropharynx having a high chance of conversion to oral squamous cell carcinoma (OSCC). It involves fibrotic transformation of sub-epithelial matrix along with epithelial abnormalities. The present work aims to unveil the mechanistic domain regarding OSF to OSCC conversion exploring the scenario of hypoxia associated oxidative stress, epithelial-mesenchymal transition (EMT), metastasis and stemness acquisition. The study involves histopathological analysis of the diseased condition along with the exploration of oxidative stress status, assessment of mitochondrial condition, immunohistochemical analysis of HIF-1α, E-cadherin, vimentin, ERK, ALDH-1, CD133, Shh, Gli-1 and survivin expressions in the oral epithelial region together with the quantitative approach towards collagen deposition in the sub-epithelial matrix. Oxidative stress was found to be associated with type-II EMT in case of OSF attributing the development of sub-epithelial fibrosis and type-III EMT in case of OSCC favoring malignancy associated metastasis. Moreover, the acquisition of stemness during OSCC can also be correlated with EMT. Alteration of Shh and Gli-1 expression pattern revealed the mechanistic association of hypoxia with the phenotypic plasticity and disease manifestation in case of OSF as well as OSCC. Shh/ Gli-1 signaling can also be correlated with survivin mediated cytoprotective phenomenon under oxidative stress. Overall, the study established the correlative network of hypoxia associated oxidative stress, EMT and manifestation of oral pre-cancerous and cancerous condition in a holistic approach that may throw rays of hope in the therapeutic domain of the concerned diseases.
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Affiliation(s)
- Ritam Chatterjee
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, West Bengal 721302, India.
| | - Biswajoy Ghosh
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, West Bengal 721302, India
| | - Mousumi Mandal
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, West Bengal 721302, India
| | - Debaleena Nawn
- Advanced Technology Development Centre, Indian Institute of Technology, Kharagpur, West Bengal 721302, India
| | - Satarupa Banerjee
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, West Bengal 721302, India; School of Bioscience and Technology, Vellore Institute of Technology, Vellore, Tamilnadu 632014, India
| | - Mousumi Pal
- Guru Nanak Institute of Dental Sciences and Research, Kolkata 700114 West Bengal, India
| | - Ranjan Rashmi Paul
- Guru Nanak Institute of Dental Sciences and Research, Kolkata 700114 West Bengal, India
| | | | - Jyotirmoy Chatterjee
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur, West Bengal 721302, India
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Mandal M, Ghosh B, Rajput M, Chatterjee J. Impact of intercellular connectivity on epithelial mesenchymal transition plasticity. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2020; 1867:118784. [DOI: 10.1016/j.bbamcr.2020.118784] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2020] [Revised: 06/14/2020] [Accepted: 06/18/2020] [Indexed: 12/14/2022]
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13
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Spatial mapping of the collagen distribution in human and mouse tissues by force volume atomic force microscopy. Sci Rep 2020; 10:15664. [PMID: 32973235 PMCID: PMC7518416 DOI: 10.1038/s41598-020-72564-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Accepted: 08/20/2020] [Indexed: 01/06/2023] Open
Abstract
Changes in the elastic properties of living tissues during normal development and in pathological processes are often due to modifications of the collagen component of the extracellular matrix at various length scales. Force volume AFM can precisely capture the mechanical properties of biological samples with force sensitivity and spatial resolution. The integration of AFM data with data of the molecular composition contributes to understanding the interplay between tissue biochemistry, organization and function. The detection of micrometer-size, heterogeneous domains at different elastic moduli in tissue sections by AFM has remained elusive so far, due to the lack of correlations with histological, optical and biochemical assessments. In this work, force volume AFM is used to identify collagen-enriched domains, naturally present in human and mouse tissues, by their elastic modulus. Collagen identification is obtained in a robust way and affordable timescales, through an optimal design of the sample preparation method and AFM parameters for faster scan with micrometer resolution. The choice of a separate reference sample stained for collagen allows correlating elastic modulus with collagen amount and position with high statistical significance. The proposed preparation method ensures safe handling of the tissue sections guarantees the preservation of their micromechanical characteristics over time and makes it much easier to perform correlation experiments with different biomarkers independently.
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Nawn D, Chatterjee S, Anura A, Bag S, Chakraborty D, Pal M, Paul RR, Chatterjee J. Elucidation of Differential Nano-Textural Attributes for Normal Oral Mucosa and Pre-Cancer. MICROSCOPY AND MICROANALYSIS : THE OFFICIAL JOURNAL OF MICROSCOPY SOCIETY OF AMERICA, MICROBEAM ANALYSIS SOCIETY, MICROSCOPICAL SOCIETY OF CANADA 2019; 25:1224-1233. [PMID: 31526400 DOI: 10.1017/s1431927619014867] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Computational analysis on altered micro-nano-textural attributes of the oral mucosa may provide precise diagnostic information about oral potentially malignant disorders (OPMDs) instead of an existing handful of qualitative reports. This study evaluated micro-nano-textural features of oral epithelium from scanning electron microscopic (SEM) images and the sub-epithelial connective tissue from light microscopic (LM) and atomic force microscopic (AFM) images for normal and OPMD (namely oral sub-mucous fibrosis, i.e., OSF). Objective textural descriptors, namely discrete wavelet transform, gray-level co-occurrence matrix (GLCM), and local binary pattern (LBP), were extracted and fed to standard classifiers. Best classification accuracy of 87.28 and 93.21%; sensitivity of 93 and 96%; specificity of 80 and 91% were achieved, respectively, for SEM and AFM. In the study groups, SEM analysis showed a significant (p < 0.01) variation for all the considered textural descriptors, while for AFM, a remarkable alteration (p < 0.01) was only found in GLCM and LBP. Interestingly, sub-epithelial collagen nanoscale and microscale textural information from AFM and LM images, respectively, were complementary, namely microlevel contrast was more in normal (0.251) than OSF (0.193), while nanolevel contrast was more in OSF (0.283) than normal (0.204). This work, thus, illustrated differential micro-nano-textural attributes for oral epithelium and sub-epithelium to distinguish OPMD precisely and may be contributory in early cancer diagnostics.
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Affiliation(s)
- Debaleena Nawn
- Advanced Technology Development Centre, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Saunak Chatterjee
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Anji Anura
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Swarnendu Bag
- Tata Medical Center, Kolkata 700160, West Bengal, India
| | - Debjani Chakraborty
- Department of Mathematics, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
| | - Mousumi Pal
- Guru Nanak Institute of Dental Sciences and Research, Kolkata 700114, West Bengal, India
| | - Ranjan Rashmi Paul
- Guru Nanak Institute of Dental Sciences and Research, Kolkata 700114, West Bengal, India
| | - Jyotirmoy Chatterjee
- School of Medical Science and Technology, Indian Institute of Technology, Kharagpur 721302, West Bengal, India
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15
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Stylianou A, Lekka M, Stylianopoulos T. AFM assessing of nanomechanical fingerprints for cancer early diagnosis and classification: from single cell to tissue level. NANOSCALE 2018; 10:20930-20945. [PMID: 30406223 DOI: 10.1039/c8nr06146g] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
Cancer development and progression are closely associated with changes both in the mechano-cellular phenotype of cancer and stromal cells and in the extracellular matrix (ECM) structure, composition, and mechanics. In this paper, we review the use of atomic force microscopy (AFM) as a tool for assessing the nanomechanical fingerprints of solid tumors, so as to be potentially used as a diagnostic biomarker for more accurate identification and early cancer grading/classification. The development of such a methodology is expected to provide new insights and a novel approach for cancer diagnosis. We propose that AFM measurements could be employed to complement standard biopsy procedures, offering an objective, novel and quantitative diagnostic approach with the properties of a blind assay, allowing unbiased evaluation of the sample.
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Affiliation(s)
- Andreas Stylianou
- Cancer Biophysics Laboratory, Department of Mechanical and Manufacturing Engineering, University of Cyprus, Cyprus.
| | - Malgorzata Lekka
- Institute of Nuclear Physics, Polish Academy of Sciences, PL-31342 Kraków, Poland.
| | - Triantafyllos Stylianopoulos
- Cancer Biophysics Laboratory, Department of Mechanical and Manufacturing Engineering, University of Cyprus, Cyprus.
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16
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Coletta RD, Salo T. Myofibroblasts in oral potentially malignant disorders: Is it related to malignant transformation? Oral Dis 2018; 24:84-88. [PMID: 29480603 DOI: 10.1111/odi.12694] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 05/19/2017] [Indexed: 12/30/2022]
Abstract
In oral cancer, acquisition of α-smooth muscle actin (α-SMA)-positive fibroblasts, known as myofibroblasts or carcinoma-associated fibroblasts (CAF), is an important event for progression and metastasis. However, the contribution of myofibroblasts in oral potentially malignant disorders (OPMD) remains controversial. This systematic review provides evidence that immunodetection of myofibroblasts may identify oral submucous fibrosis (OSMF) with high risk of malignant transformation, but does not represent an auxiliary tool to predict the malignant potential of leukoplakia and erythroplakia, the most common OPMD.
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Affiliation(s)
- R D Coletta
- Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil
| | - T Salo
- Department of Oral Diagnosis, Piracicaba Dental School, University of Campinas, Piracicaba, São Paulo, Brazil.,Unit of Cancer Research and Translational Medicine, Faculty of Medicine and Medical Research Center Oulu, Oulu University Hospital, University of Oulu, Oulu, Finland.,Department of Pathology, Institute of Oral and Maxillofacial Disease, Helsinki University Hospital, University of Helsinki and HUSLAB, Helsinki, Finland
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17
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Maji D, Das S. Atomic force microscopy and nanoindentation investigation of polydimethylsiloxane elastomeric substrate compliancy for various sputtered thin film morphologies. J Biomed Mater Res A 2017; 106:725-737. [PMID: 29094469 DOI: 10.1002/jbm.a.36283] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2017] [Revised: 10/15/2017] [Accepted: 10/26/2017] [Indexed: 11/08/2022]
Abstract
Crack free electrically continuous metal thin films over soft elastomeric substrates play an integral part in realization of modern day flexible bioelectronics and biosensors. Under nonoptimized deposition conditions, delamination, and/or cracking of the top film as well as the underlying soft substrate hinders optimal performance of these devices. Hence it is very important to understand and control not only the various deposition factors like power, time, or deposition pressure but also investigate the various interfacial physics playing a critical role in assuring thin film adhesion and substrate compliancy. In the present study, various nanomechanical information of the underlying substrate, namely, crack profile, average roughness, Young's modulus, and adhesion force were studied for uncracked and cracked polydimethylsiloxane (PDMS) surfaces along with pristine and conventional plasma treated PDMS samples as control. Quantification of the above parameters were done using three-dimensional surface profiler, scanning electron microscopy, nanoindentation, and atomic force microscopy techniques to elucidate the modulus range, average roughness, and adhesion force. Comparative analysis with control revealed remarkable similarity between increased modulus values, increased surface roughness, and reduced adhesion force accounting for reduced substrate compliancy and resulting in film cracking or buckling which are critical for development of various bioflexible devices. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part A: 106A: 725-737, 2018.
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Affiliation(s)
- Debashis Maji
- Department of Sensor and Biomedical Technology, School of Electronics Engineering (SENSE), VIT University, Vellore, Tamil Nadu, 632014, India
| | - Soumen Das
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, 721302, India
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