1
|
Tolabi H, Davari N, Khajehmohammadi M, Malektaj H, Nazemi K, Vahedi S, Ghalandari B, Reis RL, Ghorbani F, Oliveira JM. Progress of Microfluidic Hydrogel-Based Scaffolds and Organ-on-Chips for the Cartilage Tissue Engineering. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023:e2208852. [PMID: 36633376 DOI: 10.1002/adma.202208852] [Citation(s) in RCA: 30] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 12/09/2022] [Indexed: 05/09/2023]
Abstract
Cartilage degeneration is among the fundamental reasons behind disability and pain across the globe. Numerous approaches have been employed to treat cartilage diseases. Nevertheless, none have shown acceptable outcomes in the long run. In this regard, the convergence of tissue engineering and microfabrication principles can allow developing more advanced microfluidic technologies, thus offering attractive alternatives to current treatments and traditional constructs used in tissue engineering applications. Herein, the current developments involving microfluidic hydrogel-based scaffolds, promising structures for cartilage regeneration, ranging from hydrogels with microfluidic channels to hydrogels prepared by the microfluidic devices, that enable therapeutic delivery of cells, drugs, and growth factors, as well as cartilage-related organ-on-chips are reviewed. Thereafter, cartilage anatomy and types of damages, and present treatment options are briefly overviewed. Various hydrogels are introduced, and the advantages of microfluidic hydrogel-based scaffolds over traditional hydrogels are thoroughly discussed. Furthermore, available technologies for fabricating microfluidic hydrogel-based scaffolds and microfluidic chips are presented. The preclinical and clinical applications of microfluidic hydrogel-based scaffolds in cartilage regeneration and the development of cartilage-related microfluidic chips over time are further explained. The current developments, recent key challenges, and attractive prospects that should be considered so as to develop microfluidic systems in cartilage repair are highlighted.
Collapse
Affiliation(s)
- Hamidreza Tolabi
- New Technologies Research Center (NTRC), Amirkabir University of Technology, Tehran, 15875-4413, Iran
- Department of Biomedical Engineering, Amirkabir University of Technology (Tehran Polytechnic), Tehran, 15875-4413, Iran
| | - Niyousha Davari
- Department of Life Science Engineering, Faculty of New Sciences and Technologies, University of Tehran, Tehran, 143951561, Iran
| | - Mehran Khajehmohammadi
- Department of Mechanical Engineering, Faculty of Engineering, Yazd University, Yazd, 89195-741, Iran
- Medical Nanotechnology and Tissue Engineering Research Center, Yazd Reproductive Sciences Institute, Shahid Sadoughi University of Medical Sciences, Yazd, 8916877391, Iran
| | - Haniyeh Malektaj
- Department of Materials and Production, Aalborg University, Fibigerstraede 16, Aalborg, 9220, Denmark
| | - Katayoun Nazemi
- Drug Delivery, Disposition and Dynamics Theme, Monash Institute of Pharmaceutical Sciences, Monash University, Parkville, Victoria, 3052, Australia
| | - Samaneh Vahedi
- Department of Material Science and Engineering, Faculty of Engineering, Imam Khomeini International University, Qazvin, 34149-16818, Iran
| | - Behafarid Ghalandari
- State Key Laboratory of Oncogenes and Related Genes, Institute for Personalized Medicine, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai, 200030, China
| | - Rui L Reis
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, Barco, Guimarães, 4805-017, Portugal
- ICVS/3B's-PT Government Associate Laboratory, Braga, Guimarães, 4805-017, Portugal
| | - Farnaz Ghorbani
- Institute of Biomaterials, University of Erlangen-Nuremberg, Cauerstrasse 6, 91058, Erlangen, Germany
| | - Joaquim Miguel Oliveira
- 3B's Research Group, I3Bs - Research Institute on Biomaterials, Biodegradables and Biomimetics, University of Minho, Headquarters of the European Institute of Excellence on Tissue Engineering and Regenerative Medicine, AvePark, Parque de Ciência e Tecnologia, Zona Industrial da Gandra, Barco, Guimarães, 4805-017, Portugal
- ICVS/3B's-PT Government Associate Laboratory, Braga, Guimarães, 4805-017, Portugal
| |
Collapse
|
2
|
Numerical study on the effect of capacitively coupled electrical stimulation on biological cells considering model uncertainties. Sci Rep 2022; 12:4744. [PMID: 35304501 PMCID: PMC8933463 DOI: 10.1038/s41598-022-08279-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 03/03/2022] [Indexed: 11/08/2022] Open
Abstract
Electrical stimulation of biological samples such as tissues and cell cultures attracts growing attention due to its capability of enhancing cell activity, proliferation, and differentiation. Eventually, a profound knowledge of the underlying mechanisms paves the way for innovative therapeutic devices. Capacitive coupling is one option of delivering electric fields to biological samples that has advantages regarding biocompatibility. However, its biological mechanism of interaction is not well understood. Experimental findings could be related to voltage-gated channels, which are triggered by changes of the transmembrane potential. Numerical simulations by the finite element method provide a possibility to estimate the transmembrane potential. Since a full resolution of the cell membrane within a macroscopic model would lead to prohibitively expensive models, we suggest the adaptation of an approximate finite element method. Starting from a basic 2.5D model, the chosen method is validated and applied to realistic experimental situations. To understand the influence of the dielectric properties on the modelling outcome, uncertainty quantification techniques are employed. A frequency-dependent influence of the uncertain dielectric properties of the cell membrane on the modelling outcome is revealed. This may have practical implications for future experimental studies. Our methodology can be easily adapted for computational studies relying on experimental data.
Collapse
|
3
|
Dielectrophoresis as a Tool to Reveal the Potential Role of Ion Channels and Early Electrophysiological Changes in Osteoarthritis. MICROMACHINES 2021; 12:mi12080949. [PMID: 34442571 PMCID: PMC8402151 DOI: 10.3390/mi12080949] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Revised: 07/30/2021] [Accepted: 08/08/2021] [Indexed: 11/16/2022]
Abstract
Diseases such as osteoarthritis (OA) are commonly characterized at the molecular scale by gene expression and subsequent protein production; likewise, the effects of pharmaceutical interventions are typically characterized by the effects of molecular interactions. However, these phenomena are usually preceded by numerous precursor steps, many of which involve significant ion influx or efflux. As a consequence, rapid assessment of cell electrophysiology could play a significant role in unravelling the mechanisms underlying drug interactions and progression of diseases, such as OA. In this study, we used dielectrophoresis (DEP), a technique that allows rapid, label-free determination of the dielectric parameters to assess the role of potassium ions on the dielectric characteristics of chondrocytes, and to investigate the electrophysiological differences between healthy chondrocytes and those from an in vitro arthritic disease model. Our results showed that DEP was able to detect a significant decrease in membrane conductance (6191 ± 738 vs. 8571 ± 1010 S/m2), membrane capacitance (10.3 ± 1.47 vs. 14.5 ± 0.01 mF/m2), and whole cell capacitance (5.4 ± 0.7 vs. 7.5 ± 0.3 pF) following inhibition of potassium channels using 10 mM tetraethyl ammonium, compared to untreated healthy chondrocytes. Moreover, cells from the OA model had a different response to DEP force in comparison to healthy cells; this was seen in terms of both a decreased membrane conductivity (782 S/m2 vs. 1139 S/m2) and a higher whole cell capacitance (9.58 ± 3.4 vs. 3.7 ± 1.3 pF). The results show that DEP offers a high throughput method, capable of detecting changes in membrane electrophysiological properties and differences between disease states.
Collapse
|
4
|
Liang H, Zhang Y, Chen D, Tan H, Zheng Y, Wang J, Chen J. Characterization of Single-Nucleus Electrical Properties by Microfluidic Constriction Channel. MICROMACHINES 2019; 10:mi10110740. [PMID: 31683555 PMCID: PMC6915630 DOI: 10.3390/mi10110740] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 10/26/2019] [Accepted: 10/29/2019] [Indexed: 02/07/2023]
Abstract
As key bioelectrical markers, equivalent capacitance (Cne, i.e., capacitance per unit area) and resistance (Rne, i.e., resistivity multiply thickness) of nuclear envelopes have emerged as promising electrical indicators, which cannot be effectively measured by conventional approaches. In this study, single nuclei were isolated from whole cells and trapped at the entrances of microfluidic constriction channels, and then corresponding impedance profiles were sampled and translated into single-nucleus Cne and Rne based on a home-developed equivalent electrical model. Cne and Rne of A549 nuclei were first quantified as 3.43 ± 1.81 μF/cm2 and 2.03 ± 1.40 Ω·cm2 (Nn = 35), which were shown not to be affected by variations of key parameters in nuclear isolation and measurement. The developed approach in this study was also used to measure a second type of nuclei, producing Cne and Rne of 3.75 ± 3.17 μF/cm2 and 1.01 ± 0.70 Ω·cm2 for SW620 (Nn = 17). This study may provide a new perspective in single-cell electrical characterization, enabling cell type classification and cell status evaluation based on bioelectrical markers of nuclei.
Collapse
Affiliation(s)
- Hongyan Liang
- State Key Laboratory of Transducer Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China.
- School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 101408, China.
| | - Yi Zhang
- State Key Laboratory of Transducer Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China.
- School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 101408, China.
| | - Deyong Chen
- State Key Laboratory of Transducer Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China.
- School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 101408, China.
| | - Huiwen Tan
- State Key Laboratory of Transducer Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China.
- School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 101408, China.
| | - Yu Zheng
- Shandong University, Jinan 250100, China.
| | - Junbo Wang
- State Key Laboratory of Transducer Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China.
- School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 101408, China.
| | - Jian Chen
- State Key Laboratory of Transducer Technology, Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100094, China.
- School of Electronic, Electrical and Communication Engineering, University of Chinese Academy of Sciences, Beijing 101408, China.
| |
Collapse
|
5
|
Gao Y, Gao J, Li H, Du D, Jin D, Zheng M, Zhang C. Autologous costal chondral transplantation and costa-derived chondrocyte implantation: emerging surgical techniques. Ther Adv Musculoskelet Dis 2019; 11:1759720X19877131. [PMID: 31579403 PMCID: PMC6759717 DOI: 10.1177/1759720x19877131] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 08/29/2019] [Indexed: 01/08/2023] Open
Abstract
It is a great challenge to cure symptomatic lesions and considerable defects of hyaline cartilage due to its complex structure and poor self-repair capacity. If left untreated, unmatured degeneration will cause significant complications. Surgical intervention to repair cartilage may prevent progressive joint degeneration. A series of surgical techniques, including biological augmentation, microfracture and bone marrow stimulation, autologous chondrocyte implantation (ACI), and allogenic and autogenic chondral/osteochondral transplantation, have been used for various indications. However, the limited repairing capacity and the potential pitfalls of these techniques cannot be ignored. Increasing evidence has shown promising outcomes from ACI and cartilage transplantation. Nevertheless, the morbidity of autologous donor sites and limited resource of allogeneic bone have considerably restricted the wide application of these surgical techniques. Costal cartilage, which preserves permanent chondrocytes and the natural osteochondral junction, is an ideal candidate for the restoration of cartilage defects. Several in vitro and in vivo studies have shown good performance of costal cartilage transplantation. Although costal cartilage is a classic donor in plastic and cosmetic surgery, it is rarely used in skeletal cartilage restoration. In this review, we introduce the fundamental properties of costal cartilage and summarize costa-derived chondrocyte implantation and costal chondral/osteochondral transplantation. We will also discuss the pitfalls and pearls of costal cartilage transplantation. Costal chondral/osteochondral transplantation and costa-based chondrocytotherapy might be up-and-coming surgical techniques for recalcitrant cartilage lesions.
Collapse
Affiliation(s)
| | - Junjie Gao
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
- Centre for Orthopaedic Translational Research, University of Western Australia, Nedlands, WA, Australia
- Perron Institute for Neurological and Translational Science, Nedlands, WA, Australia
| | - Hengyuan Li
- Department of Orthopaedics, Second Affiliated Hospital of Zhejiang University School of Medicine, Zhejiang, China
- Centre for Orthopaedic Translational Research, Medical School, University of Western Australia, Nedlands, WA, Australia
- Perron Institute for Neurological and Translational Science, Nedlands, WA, Australia
| | - Dajiang Du
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
| | - Dongxu Jin
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai, China
| | - Minghao Zheng
- Centre for Orthopaedic Translational Research, Medical School, University of Western Australia, Nedlands, WA, Australia
- Perron Institute for Neurological and Translational Science, Nedlands, WA, Australia
| | - Changqing Zhang
- Department of Orthopaedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai 200233, China
- Institute of Microsurgery on Extremities, Shanghai 200233, China
| |
Collapse
|
6
|
Wang L, Jiang D, Wang Q, Wang Q, Hu H, Jia W. The Application of Microfluidic Techniques on Tissue Engineering in Orthopaedics. Curr Pharm Des 2019; 24:5397-5406. [PMID: 30827230 DOI: 10.2174/1381612825666190301142833] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 02/20/2019] [Indexed: 12/15/2022]
Abstract
Background:
Tissue engineering (TE) is a promising solution for orthopaedic diseases such as bone or
cartilage defects and bone metastasis. Cell culture in vitro and scaffold fabrication are two main parts of TE, but
these two methods both have their own limitations. The static cell culture medium is unable to achieve multiple
cell incubation or offer an optimal microenvironment for cells, while regularly arranged structures are unavailable
in traditional cell-laden scaffolds, which results in low biocompatibility. To solve these problems, microfluidic
techniques are combined with TE. By providing 3-D networks and interstitial fluid flows, microfluidic platforms
manage to maintain phenotype and viability of osteocytic or chondrocytic cells, and the precise manipulation of
liquid, gel and air flows in microfluidic devices leads to the highly organized construction of scaffolds.
Methods:
In this review, we focus on the recent advances of microfluidic techniques applied in the field of tissue
engineering, especially in orthropaedics. An extensive literature search was done using PubMed. The introduction
describes the properties of microfluidics and how it exploits the advantages to the full in the aspects of TE. Then
we discuss the application of microfluidics on the cultivation of osteocytic cells and chondrocytes, and other
extended researches carried out on this platform. The following section focuses on the fabrication of highly organized
scaffolds and other biomaterials produced by microfluidic devices. Finally, the incubation and studying of
bone metastasis models in microfluidic platforms are discussed.
Conclusion:
The combination of microfluidics and tissue engineering shows great potentials in the osteocytic cell
culture and scaffold fabrication. Though there are several problems that still require further exploration, the future
of microfluidics in TE is promising.
Collapse
Affiliation(s)
- Lingtian Wang
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai Jiao Tong University, Shanghai 200233, China
| | - Dajun Jiang
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai Jiao Tong University, Shanghai 200233, China
| | - Qiyang Wang
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai Jiao Tong University, Shanghai 200233, China
| | - Qing Wang
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai Jiao Tong University, Shanghai 200233, China
| | - Haoran Hu
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai Jiao Tong University, Shanghai 200233, China
| | - Weitao Jia
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai Jiao Tong University, Shanghai 200233, China
| |
Collapse
|
7
|
Wu J, Wang P, Tang Y, Liu H, Wang H, Zhang W, Zhang Y, Chen L, Xu Z, Yao X. Technical Note: A new method to rapidly identify benign and malignant breast lumps through bioelectrical impedance spectroscopy. Med Phys 2019; 46:2522-2525. [PMID: 30859583 DOI: 10.1002/mp.13474] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2018] [Revised: 02/25/2019] [Accepted: 02/28/2019] [Indexed: 01/07/2023] Open
Affiliation(s)
- Jian Wu
- Department of Breast Thyroid Surgery The Third People's Hospital of Chengdu The Affiliated Hospital of Southwest Jiaotong University Chengdu China
| | - Pin Wang
- Department of Breast Thyroid Surgery The Third People's Hospital of Chengdu The Affiliated Hospital of Southwest Jiaotong University Chengdu China
| | - Yan Tang
- Department of pathology The Third People's Hospital of Chengdu The Affiliated Hospital of Southwest Jiaotong University Chengdu China
| | - Hong Liu
- Department of Breast Thyroid Surgery The Third People's Hospital of Chengdu The Affiliated Hospital of Southwest Jiaotong University Chengdu China
| | - Haobin Wang
- Department of Breast Thyroid Surgery The Third People's Hospital of Chengdu The Affiliated Hospital of Southwest Jiaotong University Chengdu China
| | - Wenjie Zhang
- Department of Breast Thyroid Surgery The Third People's Hospital of Chengdu The Affiliated Hospital of Southwest Jiaotong University Chengdu China
| | - Yan Zhang
- Department of Breast Thyroid Surgery The Third People's Hospital of Chengdu The Affiliated Hospital of Southwest Jiaotong University Chengdu China
| | - Liping Chen
- Department of Breast Thyroid Surgery The Third People's Hospital of Chengdu The Affiliated Hospital of Southwest Jiaotong University Chengdu China
| | - Zhangbo Xu
- Department of Breast Thyroid Surgery The Third People's Hospital of Chengdu The Affiliated Hospital of Southwest Jiaotong University Chengdu China
| | - Xinmin Yao
- Department of Breast Thyroid Surgery The Third People's Hospital of Chengdu The Affiliated Hospital of Southwest Jiaotong University Chengdu China
| |
Collapse
|
8
|
Asmar A, Semenov I, Kelly R, Stacey M. Abnormal response of costal chondrocytes to acidosis in patients with chest wall deformity. Exp Mol Pathol 2018; 106:27-33. [PMID: 30485799 DOI: 10.1016/j.yexmp.2018.11.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 11/08/2018] [Accepted: 11/24/2018] [Indexed: 11/30/2022]
Abstract
Costal cartilage is much understudied compared to the load bearing cartilages. Abnormally grown costal cartilages are associated with the inherited chest wall deformities pectus excavatum and pectus carinatum resulting in sunken or pigeon chest respectively. A lack of understanding of the ultrastructural and molecular biology properties of costal cartilage is a major confounder in predicting causes and outcomes of these disorders. Due to the avascular nature of cartilage, chondrocytes metabolize glycolytically, producing an acidic environment. During physical activity hydrogen ions move within cartilage driven by compressive forces, thus at any one time, chondrocytes experience transient changes in pH. A variety of ion channels on chondrocytes plasma membrane equip them to function in the rapidly changing conditions they experience. In this paper we describe reduced expression of the ASIC2 gene encoding the acid sensing ion channel isoform 2 (previously referred to as ACCN1 or ACCN) in patients with chest wall deformities. We hypothesized that chondrocytes from these patients cannot respond normally to changes in pH that are an integral part of the biology of this tissue. Activation of ASICs indirectly creates a cascade ultimately dependent on intracellular calcium transients. The objective of this paper was to compare internal calcium signaling in response to external pH changes in costal chondrocytes from patients with chest wall deformities and healthy individuals. Although the molecular mechanism through which chondrocytes are regulated by acidosis remains unknown, we observed reduced amplitudes of calcium rise in patient chondrocytes exposed to low pH that become further impaired upon repeat exposure.
Collapse
Affiliation(s)
- A Asmar
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA, USA
| | - I Semenov
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA, USA
| | - R Kelly
- Department of Surgery, Eastern Virginia Medical School, Pediatric Surgery Division, Children's Hospital of the King's Daughters, Norfolk, VA, USA
| | - M Stacey
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA, USA.
| |
Collapse
|
9
|
Dielectric properties of isolated adrenal chromaffin cells determined by microfluidic impedance spectroscopy. Bioelectrochemistry 2017; 119:84-91. [PMID: 28918192 DOI: 10.1016/j.bioelechem.2017.09.001] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Revised: 09/01/2017] [Accepted: 09/04/2017] [Indexed: 01/07/2023]
Abstract
Knowledge of the dielectric properties of biological cells plays an important role in numerical models aimed at understanding how high intensity ultrashort nanosecond electric pulses affect the plasma membrane and the membranes of intracellular organelles. To this end, using electrical impedance spectroscopy, the dielectric properties of isolated, neuroendocrine adrenal chromaffin cells were obtained. Measured impedance data of the cell suspension, acquired between 1kHz and 20MHz, were fit into a combination of constant phase element and Cole-Cole models from which the effect of electrode polarization was extracted. The dielectric spectrum of each cell suspension was fit into a Maxwell-Wagner mixture model and the Clausius-Mossotti factor was obtained. Lastly, to extract the cellular dielectric parameters, the cell dielectric data were fit into a granular cell model representative of a chromaffin cell, which was based on the inclusion of secretory granules in the cytoplasm. Chromaffin cell parameters determined from this study were the cell and secretory granule membrane specific capacitance (1.22 and 7.10μF/cm2, respectively), the cytoplasmic conductivity, which excludes and includes the effect of intracellular membranous structures (1.14 and 0.49S/m, respectively), and the secretory granule milieu conductivity (0.35S/m). These measurements will be crucial for incorporating into numerical models aimed at understanding the differential poration effect of nanosecond electric pulses on chromaffin cell membranes.
Collapse
|
10
|
Mansoorifar A, Ghosh A, Sabuncu AC, Beskok A. Accuracy of the Maxwell–Wagner and the Bruggeman–Hanai mixture models for single cell dielectric spectroscopy. IET Nanobiotechnol 2017. [DOI: 10.1049/iet-nbt.2017.0064] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Affiliation(s)
- Amin Mansoorifar
- Mechanical Engineering DepartmentSouthern Methodist UniversityDallasTX 75205USA
| | - Arindam Ghosh
- Mechanical Engineering DepartmentVirginia Tech UniversityBlacksburgVA 24061USA
| | - Ahmet C. Sabuncu
- Mechanical Engineering DepartmentSouthern Methodist UniversityDallasTX 75205USA
| | - Ali Beskok
- Mechanical Engineering DepartmentSouthern Methodist UniversityDallasTX 75205USA
| |
Collapse
|
11
|
Marzec E, Olszewski J, Kaczmarczyk J, Richter M, Trzeciak T, Nowocień K, Malak R, Samborski W. Dielectric study of interaction of water with normal and osteoarthritis femoral condyle cartilage. Bioelectrochemistry 2016; 110:32-40. [PMID: 27015448 DOI: 10.1016/j.bioelechem.2016.03.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2015] [Revised: 02/26/2016] [Accepted: 03/13/2016] [Indexed: 12/23/2022]
Abstract
The main goal of this paper is the in vitro study of healthy and osteoarthritis (OA) human cartilage using the dielectric spectroscopy in the alpha-dispersion region of the electric field and in the temperatures from 25 to 140°C. The activation energy of conductivity needed to break the bonds formed by water in the extracellular matrix takes the average values of 61kJ/mol and 44kJ/mol for the control and OA cartilages, respectively. At 28°C, the small difference appears in the permittivity decrement between the control and OA cartilages, while the conductivity increment is about 2 times higher for the control tissue than that for the OA tissue. At 75°C, the conductivity increment for both of these samples is 8 times higher than their respective permittivity decrement. In addition, at 140°C the values of these both parameters for the OA tissue decrease by 8 times as compared to those recorded for the control sample. The relaxation frequency of about 10kHz is similar for both of these samples. The knowledge on dielectric properties of healthy and OA cartilage may prove relevant to tissue engineering focused on the repair of cartilage lesions via the layered structure designing.
Collapse
Affiliation(s)
- E Marzec
- Department of Bionics and Bioimpedance, University of Medical Sciences, Parkowa 2, 60-775 Poznań, Poland.
| | - J Olszewski
- Department of Bionics and Bioimpedance, University of Medical Sciences, Parkowa 2, 60-775 Poznań, Poland
| | - J Kaczmarczyk
- Department of Orthopedics and Traumatology, University of Medical Sciences, 28 Czerwca 1956r., 135/147, 60-545 Poznań, Poland
| | - M Richter
- Department of Orthopedics and Traumatology, University of Medical Sciences, 28 Czerwca 1956r., 135/147, 60-545 Poznań, Poland
| | - T Trzeciak
- Department of Orthopedics and Traumatology, University of Medical Sciences, 28 Czerwca 1956r., 135/147, 60-545 Poznań, Poland
| | - K Nowocień
- Department of Orthopedics and Traumatology, University of Medical Sciences, 28 Czerwca 1956r., 135/147, 60-545 Poznań, Poland
| | - R Malak
- Department of Rheumatology and Rehabilitation, University of Medical Sciences, 28 Czerwca 1956r., 135/147, 60-545 Poznań, Poland
| | - W Samborski
- Department of Rheumatology and Rehabilitation, University of Medical Sciences, 28 Czerwca 1956r., 135/147, 60-545 Poznań, Poland
| |
Collapse
|
12
|
Fernandez RE, Lebiga E, Koklu A, Sabuncu AC, Beskok A. Flexible Bioimpedance Sensor for Label-Free Detection of Cell Viability and Biomass. IEEE Trans Nanobioscience 2015; 14:700-6. [PMID: 26415205 DOI: 10.1109/tnb.2015.2451594] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
We introduce a flexible microfluidic bioimpedance sensor that is capable of detecting biomass and cell viability variations in a cell suspension. The sensor is developed on indium tin oxide (ITO) coated polyethylene terephthalate (PET) substrate and is devoid of gold, silicon, PDMS, or glass. In conjugation with a custom built PCB read-out module, the impedance characteristics of a cell suspension can be measured within one minute of sample introduction using liquid volumes less than 5 μL. The portable sensor system occupies very little bench space and has the potential to be developed as a disposable electrical bioimpedance probe for rapid detection of dielectric variations in a biological suspension. The sensor is designed to generate a differential impedance spectra exclusive to a cell suspension with a dual-electrode-pair system. The potential of the sensor to discriminate between live and heat treated Saccharomyces cerevisiae is demonstrated in this study. The disposable sensor along with the distance variation technique is touted to be an inexpensive alternative to some of the existing online disposable biomass detection probes and electrochemical sensors.
Collapse
|
13
|
Sabuncu AC, Asmar AJ, Stacey MW, Beskok A. Differential dielectric responses of chondrocyte and Jurkat cells in electromanipulation buffers. Electrophoresis 2015; 36:1499-506. [PMID: 25958778 PMCID: PMC4555997 DOI: 10.1002/elps.201500119] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2014] [Revised: 04/10/2015] [Accepted: 04/14/2015] [Indexed: 12/17/2022]
Abstract
Electromanipulation of cells as a label-free cell manipulation and characterization tool has gained particular interest recently. However, the applicability of electromanipulation, particularly dielectrophoresis (DEP), to biological cells is limited to cells suspended in buffers containing lower amounts of salts relative to the physiological buffers. One might question the use of low conductivity buffers (LCBs) for DEP separation, as cells are stressed in buffers lacking physiological levels of salt. In LCB, cells leak ions and undergo volume regulation. Therefore, cells exhibit time-dependent DEP response in LCB. In this work, cellular changes in LCB are assessed by dielectric spectroscopy, cell viability assay, and gene expression of chondrocytes and Jurkats. Results indicate leakage of ions from cells, increases in cytoplasmic conductivity, membrane capacitance, and conductance. Separability factor, which defines optimum conditions for DEP cell separation, for the two cell types is calculated using the cellular dielectric data. Optimum DEP separation conditions change as cellular dielectric properties evolve in LCB. Genetic analyses indicate no changes in expression of ionic channel proteins for chondrocytes suspended in LCB. Retaining cellular viability might be important during dielectrophoretic separation, especially when cells are to be biologically tested at a downstream microfluidic component.
Collapse
Affiliation(s)
- Ahmet C. Sabuncu
- Department of Mechanical Engineering, Southern Methodist University, Dallas, VA, 75275, USA
| | - Anthony J. Asmar
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA, 23529, USA
- Department of Biological Sciences, Old Dominion University, Norfolk, VA, USA
| | - Michael W. Stacey
- Frank Reidy Research Center for Bioelectrics, Old Dominion University, Norfolk, VA, 23529, USA
| | - Ali Beskok
- Department of Mechanical Engineering, Southern Methodist University, Dallas, VA, 75275, USA
| |
Collapse
|
14
|
Dielectric relaxation of normothermic and hypothermic rat corneas. Bioelectrochemistry 2015; 101:132-7. [DOI: 10.1016/j.bioelechem.2014.08.023] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2014] [Revised: 08/29/2014] [Accepted: 08/31/2014] [Indexed: 12/22/2022]
|
15
|
|