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Desai N, Pande S, Vora LK, Kommineni N. Nanofibrous Microspheres: A Biomimetic Platform for Bone Tissue Regeneration. ACS APPLIED BIO MATERIALS 2024. [PMID: 38950103 DOI: 10.1021/acsabm.4c00613] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/03/2024]
Abstract
Bone, a fundamental constituent of the human body, is a vital scaffold for support, protection, and locomotion, underscoring its pivotal role in maintaining skeletal integrity and overall functionality. However, factors such as trauma, disease, or aging can compromise bone structure, necessitating effective strategies for regeneration. Traditional approaches often lack biomimetic environments conducive to efficient tissue repair. Nanofibrous microspheres (NFMS) present a promising biomimetic platform for bone regeneration by mimicking the native extracellular matrix architecture. Through optimized fabrication techniques and the incorporation of active biomolecular components, NFMS can precisely replicate the nanostructure and biochemical cues essential for osteogenesis promotion. Furthermore, NFMS exhibit versatile properties, including tunable morphology, mechanical strength, and controlled release kinetics, augmenting their suitability for tailored bone tissue engineering applications. NFMS enhance cell recruitment, attachment, and proliferation, while promoting osteogenic differentiation and mineralization, thereby accelerating bone healing. This review highlights the pivotal role of NFMS in bone tissue engineering, elucidating their design principles and key attributes. By examining recent preclinical applications, we assess their current clinical status and discuss critical considerations for potential clinical translation. This review offers crucial insights for researchers at the intersection of biomaterials and tissue engineering, highlighting developments in this expanding field.
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Affiliation(s)
- Nimeet Desai
- Department of Biomedical Engineering, Indian Institute of Technology Hyderabad, Kandi 502285, India
| | - Shreya Pande
- Department of Biomedical Engineering, Indian Institute of Technology Hyderabad, Kandi 502285, India
| | - Lalitkumar K Vora
- School of Pharmacy, Queen's University Belfast, 97 Lisburn Road, Belfast BT9 7BL, United Kingdom
| | - Nagavendra Kommineni
- Center for Biomedical Research, Population Council, New York, New York 10065, United States
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Teixeira Polez R, Huynh N, Pridgeon CS, Valle-Delgado JJ, Harjumäki R, Österberg M. Insights into spheroids formation in cellulose nanofibrils and Matrigel hydrogels using AFM-based techniques. Mater Today Bio 2024; 26:101065. [PMID: 38706731 PMCID: PMC11066555 DOI: 10.1016/j.mtbio.2024.101065] [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: 11/11/2023] [Revised: 03/30/2024] [Accepted: 04/15/2024] [Indexed: 05/07/2024] Open
Abstract
The recent FDA decision to eliminate animal testing requirements emphasises the role of cell models, such as spheroids, as regulatory test alternatives for investigations of cellular behaviour, drug responses, and disease modelling. The influence of environment on spheroid formation are incompletely understood, leading to uncertainty in matrix selection for scaffold-based 3D culture. This study uses atomic force microscopy-based techniques to quantify cell adhesion to Matrigel and cellulose nanofibrils (CNF), and cell-cell adhesion forces, and their role in spheroid formation of hepatocellular carcinoma (HepG2) and induced pluripotent stem cells (iPS(IMR90)-4). Results showed different cell behaviour in CNF and Matrigel cultures. Both cell lines formed compact spheroids in CNF but loose cell aggregates in Matrigel. Interestingly, the type of cell adhesion protein, and not the bond strength, appeared to be a key factor in the formation of compact spheroids. The gene expression of E- and N-cadherins, proteins on cell membrane responsible for cell-cell interactions, was increased in CNF culture, leading to formation of compact spheroids while Matrigel culture induced integrin-laminin binding and downregulated E-cadherin expression, resulting in looser cell aggregates. These findings enhance our understanding of cell-biomaterial interactions in 3D cultures and offer insights for improved 3D cell models, culture biomaterials, and applications in drug research.
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Affiliation(s)
- Roberta Teixeira Polez
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076, Aalto, Finland
- Drug Research Program, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, 00790, Helsinki, Finland
| | - Ngoc Huynh
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076, Aalto, Finland
| | - Chris S. Pridgeon
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076, Aalto, Finland
- Drug Research Program, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, 00790, Helsinki, Finland
| | - Juan José Valle-Delgado
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076, Aalto, Finland
| | - Riina Harjumäki
- Drug Research Program, Division of Pharmaceutical Biosciences, Faculty of Pharmacy, University of Helsinki, 00790, Helsinki, Finland
| | - Monika Österberg
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, FI-00076, Aalto, Finland
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Gunaratnam G, Leisering R, Wieland B, Dudek J, Miosge N, Becker SL, Bischoff M, Dawson SC, Hannig M, Jacobs K, Klotz C, Aebischer T, Jung P. Characterization of a unique attachment organelle: Single-cell force spectroscopy of Giardia duodenalis trophozoites. NANOSCALE 2024; 16:7145-7153. [PMID: 38502112 DOI: 10.1039/d4nr00122b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
The unicellular parasite Giardia duodenalis is the causative agent of giardiasis, a gastrointestinal disease with global spread. In its trophozoite form, G. duodenalis can adhere to the human intestinal epithelium and a variety of other, artificial surfaces. Its attachment is facilitated by a unique microtubule-based attachment organelle, the so-called ventral disc. The mechanical function of the ventral disc, however, is still debated. Earlier studies postulated that a dynamic negative pressure under the ventral disc, generated by persistently beating flagella, mediates the attachment. Later studies suggested a suction model based on structural changes of the ventral discs, substrate clutching or grasping, or unspecific contact forces. In this study, we aim to contribute to the understanding of G. duodenalis attachment by investigating detachment characteristics and determining adhesion forces of single trophozoites on a smooth glass surface (RMS = 1.1 ± 0.2 nm) by fluidic force microscopy (FluidFM)-based single-cell force spectroscopy (SCFS). Briefly, viable adherent trophozoites were approached with a FluidFM micropipette, immobilized to the micropipette aperture by negative pressure, and detached from the surface by micropipette retraction while retract force curves were recorded. These force curves displayed novel and so far undescribed characteristics for a microorganism, namely, gradual force increase on the pulled trophozoite, with localization of adhesion force shortly before cell detachment length. Respective adhesion forces reached 7.7 ± 4.2 nN at 1 μm s-1 pulling speed. Importantly, this unique force pattern was different from that of other eukaryotic cells such as Candida albicans or oral keratinocytes, considered for comparison in this study. The latter both displayed a force pattern with force peaks of different values or force plateaus (for keratinocytes) indicative of breakage of molecular bonds of cell-anchored classes of adhesion molecules or membrane components. Furthermore, the attachment mode of G. duodenalis trophozoites was mechanically resilient to tensile forces, when the pulling speeds were raised up to 10 μm s-1 and adhesion forces increased to 28.7 ± 10.5 nN. Taken together, comparative SCSF revealed novel and unique retract force curve characteristics for attached G. duodenalis, suggesting a ligand-independent suction mechanism, that differ from those of other well described eukaryotes.
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Affiliation(s)
- Gubesh Gunaratnam
- Institute of Medical Microbiology and Hygiene, Saarland University, Homburg, Germany.
| | - Ricarda Leisering
- Department of Infectious Diseases, Unit 16 Mycotic and Parasitic Agents and Mycobacteria, Robert Koch-Institute, Berlin, Germany
| | - Ben Wieland
- Institute of Medical Microbiology and Hygiene, Saarland University, Homburg, Germany.
| | - Johanna Dudek
- Clinic of Operative Dentistry and Periodontology, Saarland University, Homburg, Germany
| | - Nicolai Miosge
- Clinic of Operative Dentistry and Periodontology, Saarland University, Homburg, Germany
| | - Sören L Becker
- Institute of Medical Microbiology and Hygiene, Saarland University, Homburg, Germany.
| | - Markus Bischoff
- Institute of Medical Microbiology and Hygiene, Saarland University, Homburg, Germany.
| | - Scott C Dawson
- Department of Microbiology and Molecular Genetics, University of California Davis, Davis, USA
| | - Matthias Hannig
- Clinic of Operative Dentistry and Periodontology, Saarland University, Homburg, Germany
| | - Karin Jacobs
- Experimental Physics, Saarland University, Saarbrücken, Germany
- Max Planck School, Matter to Life, Heidelberg, Germany
| | - Christian Klotz
- Department of Infectious Diseases, Unit 16 Mycotic and Parasitic Agents and Mycobacteria, Robert Koch-Institute, Berlin, Germany
| | - Toni Aebischer
- Department of Infectious Diseases, Unit 16 Mycotic and Parasitic Agents and Mycobacteria, Robert Koch-Institute, Berlin, Germany
| | - Philipp Jung
- Institute of Medical Microbiology and Hygiene, Saarland University, Homburg, Germany.
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Holuigue H, Nacci L, Di Chiaro P, Chighizola M, Locatelli I, Schulte C, Alfano M, Diaferia GR, Podestà A. Native extracellular matrix probes to target patient- and tissue-specific cell-microenvironment interactions by force spectroscopy. NANOSCALE 2023; 15:15382-15395. [PMID: 37700706 DOI: 10.1039/d3nr01568h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/14/2023]
Abstract
Atomic Force Microscopy (AFM) is successfully used for the quantitative investigation of the cellular mechanosensing of the microenvironment. To this purpose, several force spectroscopy approaches aim at measuring the adhesive forces between two living cells and also between a cell and an appropriate reproduction of the extracellular matrix (ECM), typically exploiting tips suitably functionalised with single components (e.g. collagen, fibronectin) of the ECM. However, these probes only poorly reproduce the complexity of the native cellular microenvironment and consequently of the biological interactions. We developed a novel approach to produce AFM probes that faithfully retain the structural and biochemical complexity of the ECM; this was achieved by attaching to an AFM cantilever a micrometric slice of native decellularised ECM, which was cut by laser microdissection. We demonstrate that these probes preserve the morphological, mechanical, and chemical heterogeneity of the ECM. Native ECM probes can be used in force spectroscopy experiments aimed at targeting cell-microenvironment interactions. Here, we demonstrate the feasibility of dissecting mechanotransductive cell-ECM interactions in the 10 pN range. As proof-of-principle, we tested a rat bladder ECM probe against the AY-27 rat bladder cancer cell line. On the one hand, we obtained reproducible results using different probes derived from the same ECM regions; on the other hand, we detected differences in the adhesion patterns of distinct bladder ECM regions (submucosa, detrusor, and adventitia), in line with the disparities in composition and biophysical properties of these ECM regions. Our results demonstrate that native ECM probes, produced from patient-specific regions of organs and tissues, can be used to investigate cell-microenvironment interactions and early mechanotransductive processes by force spectroscopy. This opens new possibilities in the field of personalised medicine.
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Affiliation(s)
- H Holuigue
- CIMAINA and Dipartimento di Fisica "Aldo Pontremoli", Università degli Studi di Milano, Milano, Italy.
| | - L Nacci
- Department of Experimental Oncology, IEO, European Institute of Oncology IRCCS, Milano, Italy.
| | - P Di Chiaro
- Department of Experimental Oncology, IEO, European Institute of Oncology IRCCS, Milano, Italy.
| | - M Chighizola
- CIMAINA and Dipartimento di Fisica "Aldo Pontremoli", Università degli Studi di Milano, Milano, Italy.
| | - I Locatelli
- Division of Experimental Oncology/Unit of Urology, URI, IRCCS San Raffaele Hospital, Milan, Italy.
| | - C Schulte
- CIMAINA and Dipartimento di Fisica "Aldo Pontremoli", Università degli Studi di Milano, Milano, Italy.
- Department of Biomedical and Clinical Sciences "L. Sacco", Università degli Studi di Milano, Milano, Italy
| | - M Alfano
- Division of Experimental Oncology/Unit of Urology, URI, IRCCS San Raffaele Hospital, Milan, Italy.
| | - G R Diaferia
- Department of Experimental Oncology, IEO, European Institute of Oncology IRCCS, Milano, Italy.
| | - A Podestà
- CIMAINA and Dipartimento di Fisica "Aldo Pontremoli", Università degli Studi di Milano, Milano, Italy.
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Gaikwad HK, Jaswandkar SV, Katti KS, Haage A, Katti DR. Molecular basis of conformational changes and mechanics of integrins. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2023; 381:20220243. [PMID: 37211038 DOI: 10.1098/rsta.2022.0243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2022] [Accepted: 01/13/2023] [Indexed: 05/23/2023]
Abstract
Integrin, as a mechanotransducer, establishes the mechanical reciprocity between the extracellular matrix (ECM) and cells at integrin-mediated adhesion sites. This study used steered molecular dynamics (SMD) simulations to investigate the mechanical responses of integrin αvβ3 with and without 10th type III fibronectin (FnIII10) binding for tensile, bending and torsional loading conditions. The ligand-binding integrin confirmed the integrin activation during equilibration and altered the integrin dynamics by changing the interface interaction between β-tail, hybrid and epidermal growth factor domains during initial tensile loading. The tensile deformation in integrin molecules indicated that fibronectin ligand binding modulates its mechanical responses in the folded and unfolded conformation states. The bending deformation responses of extended integrin models reveal the change in behaviour of integrin molecules in the presence of Mn2+ ion and ligand based on the application of force in the folding and unfolding directions of integrin. Furthermore, these SMD simulation results were used to predict the mechanical properties of integrin underlying the mechanism of integrin-based adhesion. The evaluation of integrin mechanics provides new insights into understanding the mechanotransmission (force transmission) between cells and ECM and contributes to developing an accurate model for integrin-mediated adhesion. This article is part of a discussion meeting issue 'Supercomputing simulations of advanced materials'.
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Affiliation(s)
- Hanmant K Gaikwad
- Department of Civil, Construction and Environmental Engineering, North Dakota State University, Fargo, ND 58105, USA
| | - Sharad V Jaswandkar
- Department of Civil, Construction and Environmental Engineering, North Dakota State University, Fargo, ND 58105, USA
| | - Kalpana S Katti
- Department of Civil, Construction and Environmental Engineering, North Dakota State University, Fargo, ND 58105, USA
| | - Amanda Haage
- Department of Biomedical Sciences, University of North Dakota, Grand Forks, ND 58202, USA
| | - Dinesh R Katti
- Department of Civil, Construction and Environmental Engineering, North Dakota State University, Fargo, ND 58105, USA
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Österberg M, Henn KA, Farooq M, Valle-Delgado JJ. Biobased Nanomaterials─The Role of Interfacial Interactions for Advanced Materials. Chem Rev 2023; 123:2200-2241. [PMID: 36720130 PMCID: PMC9999428 DOI: 10.1021/acs.chemrev.2c00492] [Citation(s) in RCA: 19] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
This review presents recent advances regarding biomass-based nanomaterials, focusing on their surface interactions. Plant biomass-based nanoparticles, like nanocellulose and lignin from industry side streams, hold great potential for the development of lightweight, functional, biodegradable, or recyclable material solutions for a sustainable circular bioeconomy. However, to obtain optimal properties of the nanoparticles and materials made thereof, it is crucial to control the interactions both during particle production and in applications. Herein we focus on the current understanding of these interactions. Solvent interactions during particle formation and production, as well as interactions with water, polymers, cells and other components in applications, are addressed. We concentrate on cellulose and lignin nanomaterials and their combination. We demonstrate how the surface chemistry of the nanomaterials affects these interactions and how excellent performance is only achieved when the interactions are controlled. We furthermore introduce suitable methods for probing interactions with nanomaterials, describe their advantages and challenges, and introduce some less commonly used methods and discuss their possible applications to gain a deeper understanding of the interfacial chemistry of biobased nanomaterials. Finally, some gaps in current understanding and interesting emerging research lines are identified.
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Affiliation(s)
- Monika Österberg
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, Vuorimiehentie 1, 02150Espoo, Finland
| | - K Alexander Henn
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, Vuorimiehentie 1, 02150Espoo, Finland
| | - Muhammad Farooq
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, Vuorimiehentie 1, 02150Espoo, Finland
| | - Juan José Valle-Delgado
- Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, Vuorimiehentie 1, 02150Espoo, Finland
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7
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Ezenwafor TC, Uzonwanne VO, Madukwe JUA, Amin SM, Anye VC, Obayemi JD, Odusanya OS, Soboyejo WO. Adhesion of LHRH/EphA2 to human Triple Negative Breast Cancer tissues. J Mech Behav Biomed Mater 2022; 136:105461. [PMID: 36195050 DOI: 10.1016/j.jmbbm.2022.105461] [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: 06/15/2022] [Revised: 08/26/2022] [Accepted: 09/08/2022] [Indexed: 11/19/2022]
Abstract
The adhesive interactions between molecular recognition units (such as specific peptides and antibodies) and antigens or other receptors on the surfaces of tumors are of great value in the design of targeted nanoparticles and drugs for the detection and treatment of specific cancers. In this paper, we present the results of a combined experimental and theoretical study of the adhesion between Luteinizing Hormone Releasing Hormone (LHRH)/Epherin type A2 (EphA2)-AFM coated tips and LHRH/EphA2 receptors that are overexpressed on the surfaces of human Triple Negative Breast Cancer (TNBC) tissues of different histological grades. Following a histochemical and immuno-histological study of human tissue extracts, the receptor overexpression, and their distributions are characterized using Immunohistochemistry (IHC), Immunofluorescence (IF), and a combination of fluorescence microscopy and confocal microscopy. The adhesion forces between LHRH or EphA2 and human TNBC breast tissues are measured using force microscopy techniques that account for the potential effects of capillary forces due to the presence of water vapor. The corresponding adhesion energies are also determined using adhesion theory. The pull off forces and adhesion energies associated with higher grades of TNBC are shown to be greater than those associated with normal/non-tumorigenic human breast tissues, which were studied as controls. The observed increase in adhesion forces and adhesion energies are also correlated with the increasing incidence of LHRH/EphA2 receptors at higher grades of TNBC. The implications of the results are discussed for the development of targeted nanostructures for the detection and treatment of TNBC.
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Affiliation(s)
- Theresa C Ezenwafor
- Department of Materials Science and Engineering, African University of Science and Technology, Km 10 Airport Road, Galadimawa, Abuja, Federal Capital Territory (FCT), Nigeria; NASENI Centre of Excellence in Nanotechnology and Advanced Materials, Km 4, Ondo Road, Akure, Ondo State, Nigeria; Department of Mechanical and Materials Engineering, Worcester Polytechnic Institute (WPI), 100 Institute Road, Worcester, MA, 01609, USA; Department of Biomedical Engineering, Worcester Polytechnic Institute, Gateway Park Life Sciences and Bioengineering Centre, 60 Prescott Street, Worcester, MA, 01609, USA
| | - Vanessa O Uzonwanne
- Department of Mechanical and Materials Engineering, Worcester Polytechnic Institute (WPI), 100 Institute Road, Worcester, MA, 01609, USA; Department of Biomedical Engineering, Worcester Polytechnic Institute, Gateway Park Life Sciences and Bioengineering Centre, 60 Prescott Street, Worcester, MA, 01609, USA
| | - Jonathan U A Madukwe
- Department of Histopathology, National Hospital, Abuja, Federal Capital Territory (FCT), Nigeria
| | - Said M Amin
- Department of Histopathology, National Hospital, Abuja, Federal Capital Territory (FCT), Nigeria
| | - Vitalis C Anye
- Department of Materials Science and Engineering, African University of Science and Technology, Km 10 Airport Road, Galadimawa, Abuja, Federal Capital Territory (FCT), Nigeria
| | - John D Obayemi
- Department of Mechanical and Materials Engineering, Worcester Polytechnic Institute (WPI), 100 Institute Road, Worcester, MA, 01609, USA; Department of Biomedical Engineering, Worcester Polytechnic Institute, Gateway Park Life Sciences and Bioengineering Centre, 60 Prescott Street, Worcester, MA, 01609, USA
| | - Olushola S Odusanya
- Department of Materials Science and Engineering, African University of Science and Technology, Km 10 Airport Road, Galadimawa, Abuja, Federal Capital Territory (FCT), Nigeria; Biotechnology and Genetic Engineering Advanced Laboratory, Sheda Science and Technology Complex (SHESTCO), Kwale, Abuja, Federal Capital Territory, Nigeria
| | - Winston O Soboyejo
- Department of Materials Science and Engineering, African University of Science and Technology, Km 10 Airport Road, Galadimawa, Abuja, Federal Capital Territory (FCT), Nigeria; Department of Mechanical and Materials Engineering, Worcester Polytechnic Institute (WPI), 100 Institute Road, Worcester, MA, 01609, USA; Department of Biomedical Engineering, Worcester Polytechnic Institute, Gateway Park Life Sciences and Bioengineering Centre, 60 Prescott Street, Worcester, MA, 01609, USA.
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8
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Ding Z, Peng Q, Zuo J, Wang Y, Zhou H, Tang Z. Osteogenesis Performance of Boronized Ti6Al4V/HA Composites Prepared by Microwave Sintering: In Vitro and In Vivo Studies. MATERIALS 2022; 15:ma15144985. [PMID: 35888453 PMCID: PMC9321446 DOI: 10.3390/ma15144985] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Revised: 07/04/2022] [Accepted: 07/11/2022] [Indexed: 02/01/2023]
Abstract
The boronized Ti6Al4V/HA composite is deemed to be an important biomaterial because of its potential remarkable mechanical and biological properties. This paper reports the osteogenesis performance of the boronized Ti6Al4V/HA composite, which was prepared by microwave sintering of powders of Ti6Al4V, hydroxyapatite (HA), and TiB2 in high-purity Ar gas at 1050 °C for 30 min, as dental implant based on both cell experiments in vitro and animal experiments in vivo. The comparison between the boronized Ti6Al4V/HA composite and Ti, Ti6Al4V, and boronized Ti6Al4V in the terms of adhesion, proliferation, alkaline phosphate (ALP) activity, and mineralization of MG-63 cells on their surfaces confirmed that the composite exhibited the best inductive osteogenesis potential. It exerted a more significant effect on promoting the early osteogenic differentiation of osteoblasts and exhibited the maximum optical density (OD) value in the MTT assay and the highest levels of ALP activity and mineralization ability, primarily ascribed to its bioactive HA component, porous structure, and relatively rough micro-morphology. The in vivo study in rabbits based on the micro-computed tomography (micro-CT) analysis, histological and histomorphometric evaluation, and biomechanical testing further confirmed that the boronized Ti6Al4V/HA composite had the highest new bone formation potential and the best osseointegration property after implantation for up to 12 weeks, mainly revealed by the measured values of bone volume fraction, bone implant contact, and maximum push-out force which, for example, reached 48.64%, 61%, and 150.3 ± 6.07 N at the 12th week. Owing to these inspiring features, it can serve as a highly promising dental implant.
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Affiliation(s)
- Zhenyu Ding
- Xiangya Stomatological Hospital, Central South University, Changsha 410008, China; (Z.D.); (J.Z.); (Y.W.); (H.Z.); (Z.T.)
- Xiangya School of Stomatology, Central South University, Changsha 410008, China
- Hunan Key Laboratory of Oral Health Research, Central South University, Changsha 410008, China
| | - Qian Peng
- Xiangya Stomatological Hospital, Central South University, Changsha 410008, China; (Z.D.); (J.Z.); (Y.W.); (H.Z.); (Z.T.)
- Xiangya School of Stomatology, Central South University, Changsha 410008, China
- Hunan Key Laboratory of Oral Health Research, Central South University, Changsha 410008, China
- Correspondence: ; Tel.: +86-731-8481-2058
| | - Jun Zuo
- Xiangya Stomatological Hospital, Central South University, Changsha 410008, China; (Z.D.); (J.Z.); (Y.W.); (H.Z.); (Z.T.)
- Xiangya School of Stomatology, Central South University, Changsha 410008, China
- Hunan Key Laboratory of Oral Health Research, Central South University, Changsha 410008, China
| | - Yuehong Wang
- Xiangya Stomatological Hospital, Central South University, Changsha 410008, China; (Z.D.); (J.Z.); (Y.W.); (H.Z.); (Z.T.)
- Xiangya School of Stomatology, Central South University, Changsha 410008, China
- Hunan Key Laboratory of Oral Health Research, Central South University, Changsha 410008, China
| | - Hongbo Zhou
- Xiangya Stomatological Hospital, Central South University, Changsha 410008, China; (Z.D.); (J.Z.); (Y.W.); (H.Z.); (Z.T.)
- Xiangya School of Stomatology, Central South University, Changsha 410008, China
- Hunan Key Laboratory of Oral Health Research, Central South University, Changsha 410008, China
| | - Zhangui Tang
- Xiangya Stomatological Hospital, Central South University, Changsha 410008, China; (Z.D.); (J.Z.); (Y.W.); (H.Z.); (Z.T.)
- Xiangya School of Stomatology, Central South University, Changsha 410008, China
- Hunan Key Laboratory of Oral Health Research, Central South University, Changsha 410008, China
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9
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Bloise N, Fassina L, Focarete ML, Lotti N, Visai L. Haralick's texture analysis to predict cellular proliferation on randomly oriented electrospun nanomaterials. NANOSCALE ADVANCES 2022; 4:1330-1335. [PMID: 36133676 PMCID: PMC9419736 DOI: 10.1039/d1na00890k] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Accepted: 01/24/2022] [Indexed: 05/13/2023]
Abstract
Using a computer vision approach we have extracted the Haralick's texture features of randomly oriented electrospun nanomaterials in order to predict the proliferative behavior of cells which were subsequently seeded onto the nanosurfaces.
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Affiliation(s)
- Nora Bloise
- Department of Molecular Medicine, Centre for Health Technologies (CHT), INSTM UdR of Pavia, University of Pavia 27100 Pavia Italy
- Medicina Clinica-Specialistica, UOR5 Laboratorio di Nanotecnologie, ICS Maugeri, IRCCS 27100 Pavia Italy
| | - Lorenzo Fassina
- Department of Electrical, Computer and Biomedical Engineering, Centre for Health Technologies (CHT), University of Pavia 27100 Pavia Italy
| | - Maria Letizia Focarete
- Department of Chemistry "Giacomo Ciamician", INSTM UdR of Bologna, University of Bologna 40126 Bologna Italy
| | - Nadia Lotti
- Civil, Chemical, Environmental and Materials Engineering Department, University of Bologna 40131 Bologna Italy
- Interdepartmental Center for Industrial Research on Advanced Applications in Mechanical Engineering and Materials Technology, CIRI-MAM, University of Bologna 40131 Bologna Italy
| | - Livia Visai
- Department of Molecular Medicine, Centre for Health Technologies (CHT), INSTM UdR of Pavia, University of Pavia 27100 Pavia Italy
- Medicina Clinica-Specialistica, UOR5 Laboratorio di Nanotecnologie, ICS Maugeri, IRCCS 27100 Pavia Italy
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10
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3D printing and properties of cellulose nanofibrils-reinforced quince seed mucilage bio-inks. Int J Biol Macromol 2021; 192:1098-1107. [PMID: 34666132 DOI: 10.1016/j.ijbiomac.2021.10.078] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 10/05/2021] [Accepted: 10/11/2021] [Indexed: 01/16/2023]
Abstract
Plant-based hydrogels have attracted great attention in biomedical fields since they are biocompatible and based on natural, sustainable, cost-effective, and widely accessible sources. Here, we introduced new viscoelastic bio-inks composed of quince seed mucilage and cellulose nanofibrils (QSM/CNF) easily extruded into 3D lattice structures through direct ink writing in ambient conditions. The QSM/CNF inks enabled precise control on printing fidelity where CNF endowed objects with shape stability after freeze-drying and with suitable porosity, water uptake capacity, and mechanical strength. The compressive and elastic moduli of samples produced at the highest CNF content were both increased by ~100% (from 5.1 ± 0.2 kPa and 32 ± 1 kPa to 10.7 ± 0.5 and 64 ± 2 kPa, respectively). These values ideally matched those reported for soft tissues; accordingly, the cell compatibility of the printed samples was evaluated against HepG2 cells (human liver cancer). The results confirmed the 3D hydrogels as being non-cytotoxic and suitable to support attachment, survival, and proliferation of the cells. All in all, the newly developed inks allowed sustainable 3D bio-hydrogels fitting the requirements as scaffolds for soft tissue engineering.
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Abend A, Steele C, Jahnke HG, Zink M. Adhesion of Neurons and Glial Cells with Nanocolumnar TiN Films for Brain-Machine Interfaces. Int J Mol Sci 2021; 22:8588. [PMID: 34445294 PMCID: PMC8395253 DOI: 10.3390/ijms22168588] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 07/29/2021] [Accepted: 08/07/2021] [Indexed: 12/12/2022] Open
Abstract
Coupling of cells to biomaterials is a prerequisite for most biomedical applications; e.g., neuroelectrodes can only stimulate brain tissue in vivo if the electric signal is transferred to neurons attached to the electrodes' surface. Besides, cell survival in vitro also depends on the interaction of cells with the underlying substrate materials; in vitro assays such as multielectrode arrays determine cellular behavior by electrical coupling to the adherent cells. In our study, we investigated the interaction of neurons and glial cells with different electrode materials such as TiN and nanocolumnar TiN surfaces in contrast to gold and ITO substrates. Employing single-cell force spectroscopy, we quantified short-term interaction forces between neuron-like cells (SH-SY5Y cells) and glial cells (U-87 MG cells) for the different materials and contact times. Additionally, results were compared to the spreading dynamics of cells for different culture times as a function of the underlying substrate. The adhesion behavior of glial cells was almost independent of the biomaterial and the maximum growth areas were already seen after one day; however, adhesion dynamics of neurons relied on culture material and time. Neurons spread much better on TiN and nanocolumnar TiN and also formed more neurites after three days in culture. Our designed nanocolumnar TiN offers the possibility for building miniaturized microelectrode arrays for impedance spectroscopy without losing detection sensitivity due to a lowered self-impedance of the electrode. Hence, our results show that this biomaterial promotes adhesion and spreading of neurons and glial cells, which are important for many biomedical applications in vitro and in vivo.
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Affiliation(s)
- Alice Abend
- Research Group Biotechnology and Biomedicine, Faculty of Physics and Earth Sciences, Peter Debye Institute for Soft Matter Physics, Leipzig University, Linnéstraße 5, 04103 Leipzig, Germany;
| | - Chelsie Steele
- Research Group Biotechnology and Biomedicine, Faculty of Physics and Earth Sciences, Peter Debye Institute for Soft Matter Physics, Leipzig University, Linnéstraße 5, 04103 Leipzig, Germany;
| | - Heinz-Georg Jahnke
- Centre for Biotechnology and Biomedicine, Molecular Biological-Biochemical Processing Technology, Leipzig University, Deutscher Platz 5, 04103 Leipzig, Germany;
| | - Mareike Zink
- Research Group Biotechnology and Biomedicine, Faculty of Physics and Earth Sciences, Peter Debye Institute for Soft Matter Physics, Leipzig University, Linnéstraße 5, 04103 Leipzig, Germany;
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Müller DJ, Dumitru AC, Lo Giudice C, Gaub HE, Hinterdorfer P, Hummer G, De Yoreo JJ, Dufrêne YF, Alsteens D. Atomic Force Microscopy-Based Force Spectroscopy and Multiparametric Imaging of Biomolecular and Cellular Systems. Chem Rev 2020; 121:11701-11725. [PMID: 33166471 DOI: 10.1021/acs.chemrev.0c00617] [Citation(s) in RCA: 83] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
During the last three decades, a series of key technological improvements turned atomic force microscopy (AFM) into a nanoscopic laboratory to directly observe and chemically characterize molecular and cell biological systems under physiological conditions. Here, we review key technological improvements that have established AFM as an analytical tool to observe and quantify native biological systems from the micro- to the nanoscale. Native biological systems include living tissues, cells, and cellular components such as single or complexed proteins, nucleic acids, lipids, or sugars. We showcase the procedures to customize nanoscopic chemical laboratories by functionalizing AFM tips and outline the advantages and limitations in applying different AFM modes to chemically image, sense, and manipulate biosystems at (sub)nanometer spatial and millisecond temporal resolution. We further discuss theoretical approaches to extract the kinetic and thermodynamic parameters of specific biomolecular interactions detected by AFM for single bonds and extend the discussion to multiple bonds. Finally, we highlight the potential of combining AFM with optical microscopy and spectroscopy to address the full complexity of biological systems and to tackle fundamental challenges in life sciences.
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Affiliation(s)
- Daniel J Müller
- Department of Biosystems Science and Engineering, Eidgenössische Technische Hochschule (ETH) Zürich, Mattenstrasse 28, 4056 Basel, Switzerland
| | - Andra C Dumitru
- Louvain Institute of Biomolecular Science and Technology, Université Catholique de Louvain (UCLouvain), Croix du Sud, 4-5, bte L7.07.07, B-1348 Louvain-la-Neuve, Belgium
| | - Cristina Lo Giudice
- Louvain Institute of Biomolecular Science and Technology, Université Catholique de Louvain (UCLouvain), Croix du Sud, 4-5, bte L7.07.07, B-1348 Louvain-la-Neuve, Belgium
| | - Hermann E Gaub
- Applied Physics, Ludwig-Maximilians-Universität Munich, Amalienstrasse 54, 80799 München, Germany
| | - Peter Hinterdorfer
- Institute of Biophysics, Johannes Kepler University of Linz, Gruberstrasse 40, 4020 Linz, Austria
| | - Gerhard Hummer
- Department of Theoretical Biophysics, Max Planck Institute of Biophysics and Department of Physics, Goethe University Frankfurt, 60438 Frankfurt am Main, Germany
| | - James J De Yoreo
- Physical Sciences Division, Pacific Northwest National Laboratory, Richland, Washington 99352, United States.,Department of Materials Science and Engineering, University of Washington, Seattle, Washington 98195, United States
| | - Yves F Dufrêne
- Louvain Institute of Biomolecular Science and Technology, Université Catholique de Louvain (UCLouvain), Croix du Sud, 4-5, bte L7.07.07, B-1348 Louvain-la-Neuve, Belgium
| | - David Alsteens
- Louvain Institute of Biomolecular Science and Technology, Université Catholique de Louvain (UCLouvain), Croix du Sud, 4-5, bte L7.07.07, B-1348 Louvain-la-Neuve, Belgium
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Effect of laminin, polylysine and cell medium components on the attachment of human hepatocellular carcinoma cells to cellulose nanofibrils analyzed by surface plasmon resonance. J Colloid Interface Sci 2020; 584:310-319. [PMID: 33069029 DOI: 10.1016/j.jcis.2020.09.080] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 08/22/2020] [Accepted: 09/20/2020] [Indexed: 12/26/2022]
Abstract
The development of in vitro cell models that mimic cell behavior in organs and tissues is an approach that may have remarkable impact on drug testing and tissue engineering applications in the future. Plant-based, chemically unmodified cellulose nanofibrils (CNF) hydrogel is a natural, abundant, and biocompatible material that has attracted great attention for biomedical applications, in particular for three-dimensional cell cultures. However, the mechanisms of cell-CNF interactions and factors that affect these interactions are not yet fully understood. In this work, multi-parametric surface plasmon resonance (SPR) was used to study how the adsorption of human hepatocellular carcinoma (HepG2) cells on CNF films is affected by the different proteins and components of the cell medium. Both human recombinant laminin-521 (LN-521, a natural protein of the extracellular matrix) and poly-l-lysine (PLL) adsorbed on CNF films and enhanced the attachment of HepG2 cells. Cell medium components (glucose and amino acids) and serum proteins (fetal bovine serum, FBS) also adsorbed on both bare CNF and on protein-coated CNF substrates. However, the adsorption of FBS hindered the attachment of HepG2 cells to LN-521- and PLL-coated CNF substrates, suggesting that serum proteins blocked the formation of laminin-integrin bonds and decreased favorable PLL-cell electrostatic interactions. This work sheds light on the effect of different factors on cell attachment to CNF, paving the way for the utilization and optimization of CNF-based materials for different tissue engineering applications.
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