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Blažič A, Guinard M, Leskovar T, O'Connor RP, Rems L. Long-term changes in transmembrane voltage after electroporation are governed by the interplay between nonselective leak current and ion channel activation. Bioelectrochemistry 2024; 161:108802. [PMID: 39243733 DOI: 10.1016/j.bioelechem.2024.108802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2024] [Revised: 08/14/2024] [Accepted: 08/26/2024] [Indexed: 09/09/2024]
Abstract
Electroporation causes a temporal increase in cell membrane permeability and leads to prolonged changes in transmembrane voltage (TMV) in both excitable and non-excitable cells. However, the mechanisms of these TMV changes remain to be fully elucidated. To this end, we monitored TMV over 30 min after exposing two different cell lines to a single 100 µs electroporation pulse using the FLIPR Membrane Potential dye. In CHO-K1 cells, which express very low levels of endogenous ion channels, membrane depolarization following pulse exposure could be explained by nonselective leak current, which persists until the membrane reseals, enabling the cells to recover their resting TMV. In U-87 MG cells, which express many different ion channels, we unexpectedly observed membrane hyperpolarization following the initial depolarization phase, but only at 33 °C and not at 25 °C. We developed a theoretical model, supported by experiments with ion channel inhibitors, which indicated that hyperpolarization could largely be attributed to the activation of calcium-activated potassium channels. Ion channel activation, coupled with changes in TMV and intracellular calcium, participates in various physiological processes, including cell proliferation, differentiation, migration, and apoptosis. Therefore, our study suggests that ion channels could present a potential target for influencing the biological response after electroporation.
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Affiliation(s)
- Anja Blažič
- University of Ljubljana, Faculty of Electrical Engineering, SI-1000 Ljubljana, Slovenia
| | - Manon Guinard
- University of Ljubljana, Faculty of Electrical Engineering, SI-1000 Ljubljana, Slovenia
| | - Tomaž Leskovar
- University of Ljubljana, Faculty of Electrical Engineering, SI-1000 Ljubljana, Slovenia
| | - Rodney P O'Connor
- Mines Saint-Etienne, Centre CMP, Département BEL, F-13541 Gardanne, France
| | - Lea Rems
- University of Ljubljana, Faculty of Electrical Engineering, SI-1000 Ljubljana, Slovenia.
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Barter MJ, Turner DA, Rice SJ, Hines M, Lin H, Falconer AMD, McDonnell E, Soul J, Del Carmen Arques M, Europe-Finner GN, Rowan AD, Young DA, Wilkinson DJ. SERPINA3 is a marker of cartilage differentiation and is essential for the expression of extracellular matrix genes during early chondrogenesis. Matrix Biol 2024:S0945-053X(24)00095-7. [PMID: 39097037 DOI: 10.1016/j.matbio.2024.07.004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 07/29/2024] [Accepted: 07/30/2024] [Indexed: 08/05/2024]
Abstract
Serine proteinase inhibitors (serpins) are a family of structurally similar proteins which regulate many diverse biological processes from blood coagulation to extracellular matrix (ECM) remodelling. Chondrogenesis involves the condensation and differentiation of mesenchymal stem cells (MSCs) into chondrocytes which occurs during early development. Here, and for the first time, we demonstrate that one serpin, SERPINA3 (gene name SERPINA3, protein also known as alpha-1 antichymotrypsin), plays a critical role in chondrogenic differentiation. We observed that SERPINA3 expression was markedly induced at early time points during in vitro chondrogenesis. We examined the expression of SERPINA3 in human cartilage development, identifying significant enrichment of SERPINA3 in developing foetal cartilage compared to total limb, which correlated with well-described markers of cartilage differentiation. When SERPINA3 was silenced using siRNA, cartilage pellets were smaller and contained lower proteoglycan as determined by dimethyl methylene blue assay (DMMB) and safranin-O staining. Consistent with this, RNA sequencing revealed significant downregulation of genes associated with cartilage ECM formation perturbing chondrogenesis. Conversely, SERPINA3 silencing had a negligible effect on the gene expression profile during osteogenesis suggesting the role of SERPINA3 is specific to chondrocyte differentiation. The global effect on cartilage formation led us to investigate the effect of SERPINA3 silencing on the master transcriptional regulator of chondrogenesis, SOX9. Indeed, we observed that SOX9 protein levels were markedly reduced at early time points suggesting a role for SERPINA3 in regulating SOX9 expression and activity. In summary, our data support a non-redundant role for SERPINA3 in enabling chondrogenesis via regulation of SOX9 levels.
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Affiliation(s)
- Matthew J Barter
- Skeletal Research Group, Biosciences Institute, Newcastle University, Central Parkway, Newcastle upon Tyne, NE1 3BZ, UK
| | - David A Turner
- Institute of Life Course and Medical Sciences, William Henry Duncan Building, University of Liverpool, 6 West Derby St, Liverpool, L7 8TX, UK
| | - Sarah J Rice
- Skeletal Research Group, Biosciences Institute, Newcastle University, Central Parkway, Newcastle upon Tyne, NE1 3BZ, UK
| | - Mary Hines
- Institute of Life Course and Medical Sciences, William Henry Duncan Building, University of Liverpool, 6 West Derby St, Liverpool, L7 8TX, UK
| | - Hua Lin
- Skeletal Research Group, Biosciences Institute, Newcastle University, Central Parkway, Newcastle upon Tyne, NE1 3BZ, UK
| | - Adrian M D Falconer
- Skeletal Research Group, Biosciences Institute, Newcastle University, Central Parkway, Newcastle upon Tyne, NE1 3BZ, UK
| | - Euan McDonnell
- Computational Biology Facility, University of Liverpool, MerseyBio, Crown Street, Liverpool, L69 7ZB, UK
| | - Jamie Soul
- Skeletal Research Group, Biosciences Institute, Newcastle University, Central Parkway, Newcastle upon Tyne, NE1 3BZ, UK; Computational Biology Facility, University of Liverpool, MerseyBio, Crown Street, Liverpool, L69 7ZB, UK
| | - Maria Del Carmen Arques
- Skeletal Research Group, Biosciences Institute, Newcastle University, Central Parkway, Newcastle upon Tyne, NE1 3BZ, UK
| | - G Nicholas Europe-Finner
- Skeletal Research Group, Biosciences Institute, Newcastle University, Central Parkway, Newcastle upon Tyne, NE1 3BZ, UK
| | - Andrew D Rowan
- Skeletal Research Group, Biosciences Institute, Newcastle University, Central Parkway, Newcastle upon Tyne, NE1 3BZ, UK
| | - David A Young
- Skeletal Research Group, Biosciences Institute, Newcastle University, Central Parkway, Newcastle upon Tyne, NE1 3BZ, UK
| | - David J Wilkinson
- Skeletal Research Group, Biosciences Institute, Newcastle University, Central Parkway, Newcastle upon Tyne, NE1 3BZ, UK; Institute of Life Course and Medical Sciences, William Henry Duncan Building, University of Liverpool, 6 West Derby St, Liverpool, L7 8TX, UK.
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3
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Lin J, Li K, Yang Z, Cao F, Gao L, Ning T, Xing D, Zeng H, Liu Q, Ge Z, Lin J. Functionally improved mesenchymal stem cells via nanosecond pulsed electric fields for better treatment of osteoarthritis. J Orthop Translat 2024; 47:235-248. [PMID: 39161657 PMCID: PMC11332990 DOI: 10.1016/j.jot.2024.03.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Revised: 02/25/2024] [Accepted: 03/21/2024] [Indexed: 07/28/2024] Open
Abstract
Background Numerous approaches have been utilized to optimize mesenchymal stem cells (MSCs) performance in treating osteoarthritis (OA), however, the constrained diminished activity and chondrogenic differentiation capacity impede their therapeutic efficacy. Previous investigations have successfully shown that pretreatment with nanosecond pulsed electric fields (nsPEFs) significantly enhances the chondrogenic differentiation of MSCs. Therefore, this study aims to explore nsPEFs as a strategy to improve OA therapy by enhancing MSCs' activity and chondrogenic differentiation and also investigate its potential mechanism. Methods In this study, a million MSCs were carefully suspended within a 0.4-cm gap cuvette and subjected to five pulses of nsPEFs (100 ns at 10 kV/cm, 1 Hz), with a 1-s interval between each pulse. A control group of MSCs was maintained without nsPEFs treatment for comparative analysis. nsPEFs were applied to regulate the MSCs performance and hinder OA progresses. In order to further explore the corresponding mechanism, we examined the changes of MSCs transcriptome after nsPEF pretreatment. Finally, we studied the properties of extracellular vesicles (EVs) secreted by MSCs affected by nsPEF and the therapeutic effect on OA. Results We found that nsPEFs pretreatment promoted MSCs migration and viability, particularly enhancing their viability temporarily in vivo, which is also confirmed by mRNA sequencing analysis. It also significantly inhibited the development of OA-like chondrocytes in vitro and prevented OA progression in rat models. Additionally, we discovered that nsPEFs pretreatment reprogrammed MSC performance by enhancing EVs production (5.77 ± 0.92 folds), and consequently optimizing their therapeutic potential. Conclusions In conclusion, nsPEFs pretreatment provides a simple and effective strategy for improving the MSCs performance and the therapeutic effects of MSCs for OA. EVs-nsPEFs may serve as a potent therapeutic material for OA and hold promise for future clinical applications. The translational potential of this article This study indicates that MSCs pretreated by nsPEFs greatly inhibited the development of OA. nsPEFs pretreatment will be a promising and effective method to optimize the therapeutic effect of MSCs in the future.
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Affiliation(s)
- Jianjing Lin
- Arthritis Clinical and Research Center, Peking University People's Hospital, No.11 Xizhimen South Street, Beijing, 100044, China
- Arthritis Institute, Peking University, Beijing, 100044, China
- Department of Sports Medicine and Rehabilitation, Peking University Shenzhen Hospital, Shenzhen, 518036, China
| | - Kejia Li
- Department of Biomedical Engineering, Institute of Future Technology, Peking University, Beijing, 100871, China
- Institute for Tissue Engineering and Regenerative Medicine, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong Special Administrative Region of China
| | - Zhen Yang
- Arthritis Clinical and Research Center, Peking University People's Hospital, No.11 Xizhimen South Street, Beijing, 100044, China
- Arthritis Institute, Peking University, Beijing, 100044, China
| | - Fuyang Cao
- Department of Orthopedics, Second Hospital of Shanxi Medical University, Taiyuan, 030001, China
| | - Liang Gao
- Department of Orthopaedics, The First Affiliated Hospital of Anhui Medical University, Hefei, 230041, China
| | - Tong Ning
- Institute of Medical Science, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan, 250033, China
| | - Dan Xing
- Arthritis Clinical and Research Center, Peking University People's Hospital, No.11 Xizhimen South Street, Beijing, 100044, China
- Arthritis Institute, Peking University, Beijing, 100044, China
| | - Hui Zeng
- Department of Orthopedics, the First Affiliated Hospital of Shenzhen University, Shenzhen Second People's Hospital, Shenzhen, 518035, China
| | - Qiang Liu
- Arthritis Clinical and Research Center, Peking University People's Hospital, No.11 Xizhimen South Street, Beijing, 100044, China
- Arthritis Institute, Peking University, Beijing, 100044, China
| | - Zigang Ge
- Department of Biomedical Engineering, Institute of Future Technology, Peking University, Beijing, 100871, China
| | - Jianhao Lin
- Arthritis Clinical and Research Center, Peking University People's Hospital, No.11 Xizhimen South Street, Beijing, 100044, China
- Arthritis Institute, Peking University, Beijing, 100044, China
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Lin JJ, Ning T, Jia SC, Li KJ, Huang YC, Liu Q, Lin JH, Zhang XT. Evaluation of genetic response of mesenchymal stem cells to nanosecond pulsed electric fields by whole transcriptome sequencing. World J Stem Cells 2024; 16:305-323. [PMID: 38577234 PMCID: PMC10989289 DOI: 10.4252/wjsc.v16.i3.305] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/13/2023] [Revised: 01/31/2024] [Accepted: 02/28/2024] [Indexed: 03/25/2024] Open
Abstract
BACKGROUND Mesenchymal stem cells (MSCs) modulated by various exogenous signals have been applied extensively in regenerative medicine research. Notably, nanosecond pulsed electric fields (nsPEFs), characterized by short duration and high strength, significantly influence cell phenotypes and regulate MSCs differentiation via multiple pathways. Consequently, we used transcriptomics to study changes in messenger RNA (mRNA), long noncoding RNA (lncRNA), microRNA (miRNA), and circular RNA expression during nsPEFs application. AIM To explore gene expression profiles and potential transcriptional regulatory mechanisms in MSCs pretreated with nsPEFs. METHODS The impact of nsPEFs on the MSCs transcriptome was investigated through whole transcriptome sequencing. MSCs were pretreated with 5-pulse nsPEFs (100 ns at 10 kV/cm, 1 Hz), followed by total RNA isolation. Each transcript was normalized by fragments per kilobase per million. Fold change and difference significance were applied to screen the differentially expressed genes (DEGs). Gene Ontology and Kyoto Encyclopedia of Genes and Genomes analyses were performed to elucidate gene functions, complemented by quantitative polymerase chain reaction verification. RESULTS In total, 263 DEGs were discovered, with 92 upregulated and 171 downregulated. DEGs were predominantly enriched in epithelial cell proliferation, osteoblast differentiation, mesenchymal cell differentiation, nuclear division, and wound healing. Regarding cellular components, DEGs are primarily involved in condensed chromosome, chromosomal region, actin cytoskeleton, and kinetochore. From aspect of molecular functions, DEGs are mainly involved in glycosaminoglycan binding, integrin binding, nuclear steroid receptor activity, cytoskeletal motor activity, and steroid binding. Quantitative real-time polymerase chain reaction confirmed targeted transcript regulation. CONCLUSION Our systematic investigation of the wide-ranging transcriptional pattern modulated by nsPEFs revealed the differential expression of 263 mRNAs, 2 miRNAs, and 65 lncRNAs. Our study demonstrates that nsPEFs may affect stem cells through several signaling pathways, which are involved in vesicular transport, calcium ion transport, cytoskeleton, and cell differentiation.
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Affiliation(s)
- Jian-Jing Lin
- Department of Sports Medicine and Rehabilitation, Peking University Shenzhen Hospital, Shenzhen 518036, Guangdong Province, China
| | - Tong Ning
- Institute of Medical Science, The Second Hospital, Cheeloo College of Medicine, Shandong University, Jinan 250033, Shandong Province, China
| | - Shi-Cheng Jia
- Department of Sports Medicine and Rehabilitation, Peking University Shenzhen Hospital, Shenzhen 518036, Guangdong Province, China
| | - Ke-Jia Li
- Department of Biomedical Engineering, Institute of Future Technology, Peking University, Beijing 100871, China
| | - Yong-Can Huang
- Shenzhen Engineering Laboratory of Orthopaedic Regenerative Technologies, Peking University Shenzhen Hospital, Shenzhen 518036, Guangdong Province, China
| | - Qiang Liu
- Arthritis Clinical and Research Center, Peking University People's Hospital, Beijing 100044, China
| | - Jian-Hao Lin
- Arthritis Clinical and Research Center, Peking University People's Hospital, Beijing 100044, China
| | - Xin-Tao Zhang
- Department of Sports Medicine and Rehabilitation, Peking University Shenzhen Hospital, Shenzhen 518036, Guangdong Province, China.
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Uzieliene I, Popov A, Vaiciuleviciute R, Kirdaite G, Bernotiene E, Ramanaviciene A. Polypyrrole-based structures for activation of cellular functions under electrical stimulation. Bioelectrochemistry 2024; 155:108585. [PMID: 37847982 DOI: 10.1016/j.bioelechem.2023.108585] [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: 05/05/2023] [Revised: 10/04/2023] [Accepted: 10/08/2023] [Indexed: 10/19/2023]
Abstract
Polypyrrole (Ppy) is an electroconductive polymer used in various applications, including in vitro experiments with cell cultures under electrical stimulation (ES). Ppy can be applied in various forms and most importantly, it is biocompatible with cells. Ppy specifically directs ES to cells, which makes Ppy a potential polymer for the development of novel technologies for targeted tissue regeneration. The high potential of ES in combination with different Ppy-based systems, such as hydrogels, scaffolds, or Ppy-layers is advantageous to stimulate cellular differentiation towards neurogenic, cardiac, muscle, and osteogenic lineages. Different in-house devices and the principles of ES application used to stimulate cellular functions are reviewed and summarized. The focus of this review is to observe the most relevant studies and their in-house techniques regarding the application of Ppy-based materials for the use of bone, neural, cardiac, and muscle tissue regeneration under ES. Different types of Ppy materials, such as Ppy particles, layers/films, membranes, and 3D-shaped synthetic and natural scaffolds, as well as combining Ppy with different active molecules are reviewed.
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Affiliation(s)
- Ilona Uzieliene
- Department of Regenerative Medicine, State Research Institute Centre for Innovative Medicine, LT-08406 Vilnius, Lithuania; Department of Immunology, State Research Institute Centre for Innovative Medicine, LT-08406 Vilnius, Lithuania
| | - Anton Popov
- Department of Immunology, State Research Institute Centre for Innovative Medicine, LT-08406 Vilnius, Lithuania; NanoTechnas - Center on Nanotechnology and Materials Sciences, Faculty of Chemistry and Geosciences, Vilnius University, Naugarduko g. 24, LT-03225 Vilnius, Lithuania
| | - Raminta Vaiciuleviciute
- Department of Regenerative Medicine, State Research Institute Centre for Innovative Medicine, LT-08406 Vilnius, Lithuania
| | - Gailute Kirdaite
- Department of Experimental, Preventive and Clinical Medicine, State Research Institute Centre for Innovative Medicine, LT-08406 Vilnius, Lithuania
| | - Eiva Bernotiene
- Department of Regenerative Medicine, State Research Institute Centre for Innovative Medicine, LT-08406 Vilnius, Lithuania; Faculty of Fundamental Sciences, Vilnius Gediminas Technical University, VilniusTech, Sauletekio al. 11, LT-10223 Vilnius, Lithuania
| | - Almira Ramanaviciene
- Department of Immunology, State Research Institute Centre for Innovative Medicine, LT-08406 Vilnius, Lithuania; NanoTechnas - Center on Nanotechnology and Materials Sciences, Faculty of Chemistry and Geosciences, Vilnius University, Naugarduko g. 24, LT-03225 Vilnius, Lithuania.
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Orlacchio R, Kolosnjaj-Tabi J, Mattei N, Lévêque P, Rols MP, Arnaud-Cormos D, Golzio M. Effects of Nanosecond Pulsed Electric Field (nsPEF) on a Multicellular Spheroid Tumor Model: Influence of Pulse Duration, Pulse Repetition Rate, Absorbed Energy, and Temperature. Int J Mol Sci 2023; 24:14999. [PMID: 37834447 PMCID: PMC10573334 DOI: 10.3390/ijms241914999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 09/29/2023] [Accepted: 10/05/2023] [Indexed: 10/15/2023] Open
Abstract
Cellular response upon nsPEF exposure depends on different parameters, such as pulse number and duration, the intensity of the electric field, pulse repetition rate (PRR), pulsing buffer composition, absorbed energy, and local temperature increase. Therefore, a deep insight into the impact of such parameters on cellular response is paramount to adaptively optimize nsPEF treatment. Herein, we examined the effects of nsPEF ≤ 10 ns on long-term cellular viability and growth as a function of pulse duration (2-10 ns), PRR (20 and 200 Hz), cumulative time duration (1-5 µs), and absorbed electrical energy density (up to 81 mJ/mm3 in sucrose-containing low-conductivity buffer and up to 700 mJ/mm3 in high-conductivity HBSS buffer). Our results show that the effectiveness of nsPEFs in ablating 3D-grown cancer cells depends on the medium to which the cells are exposed and the PRR. When a medium with low-conductivity is used, the pulses do not result in cell ablation. Conversely, when the same pulse parameters are applied in a high-conductivity HBSS buffer and high PRRs are applied, the local temperature rises and yields either cell sensitization to nsPEFs or thermal damage.
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Affiliation(s)
- Rosa Orlacchio
- University Bordeaux, CNRS, IMS, UMR 5218, 33400 Talence, France;
- École Pratique des Hautes Études, PSL Research University, 75014 Paris, France
| | - Jelena Kolosnjaj-Tabi
- Institut de Pharmacologie et de Biologie Structurale (IPBS), Université de Toulouse, CNRS, Université Toulouse III—Paul Sabatier (UT3), 31062 Toulouse, France; (J.K.-T.); (N.M.); (M.P.R.)
| | - Nicolas Mattei
- Institut de Pharmacologie et de Biologie Structurale (IPBS), Université de Toulouse, CNRS, Université Toulouse III—Paul Sabatier (UT3), 31062 Toulouse, France; (J.K.-T.); (N.M.); (M.P.R.)
| | - Philippe Lévêque
- University Limoges, CNRS, XLIM, UMR 7252, 87000 Limoges, France; (P.L.); (D.A.-C.)
| | - Marie Pierre Rols
- Institut de Pharmacologie et de Biologie Structurale (IPBS), Université de Toulouse, CNRS, Université Toulouse III—Paul Sabatier (UT3), 31062 Toulouse, France; (J.K.-T.); (N.M.); (M.P.R.)
| | - Delia Arnaud-Cormos
- University Limoges, CNRS, XLIM, UMR 7252, 87000 Limoges, France; (P.L.); (D.A.-C.)
- Institut Universitaire de France (IUF), 75005 Paris, France
| | - Muriel Golzio
- Institut de Pharmacologie et de Biologie Structurale (IPBS), Université de Toulouse, CNRS, Université Toulouse III—Paul Sabatier (UT3), 31062 Toulouse, France; (J.K.-T.); (N.M.); (M.P.R.)
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Vaiciuleviciute R, Uzieliene I, Bernotas P, Novickij V, Alaburda A, Bernotiene E. Electrical Stimulation in Cartilage Tissue Engineering. Bioengineering (Basel) 2023; 10:bioengineering10040454. [PMID: 37106641 PMCID: PMC10135934 DOI: 10.3390/bioengineering10040454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 03/31/2023] [Accepted: 04/06/2023] [Indexed: 04/29/2023] Open
Abstract
Electrical stimulation (ES) has been frequently used in different biomedical applications both in vitro and in vivo. Numerous studies have demonstrated positive effects of ES on cellular functions, including metabolism, proliferation, and differentiation. The application of ES to cartilage tissue for increasing extracellular matrix formation is of interest, as cartilage is not able to restore its lesions owing to its avascular nature and lack of cells. Various ES approaches have been used to stimulate chondrogenic differentiation in chondrocytes and stem cells; however, there is a huge gap in systematizing ES protocols used for chondrogenic differentiation of cells. This review focuses on the application of ES for chondrocyte and mesenchymal stem cell chondrogenesis for cartilage tissue regeneration. The effects of different types of ES on cellular functions and chondrogenic differentiation are reviewed, systematically providing ES protocols and their advantageous effects. Moreover, cartilage 3D modeling using cells in scaffolds/hydrogels under ES are observed, and recommendations on reporting about the use of ES in different studies are provided to ensure adequate consolidation of knowledge in the area of ES. This review brings novel insights into the further application of ES in in vitro studies, which are promising for further cartilage repair techniques.
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Affiliation(s)
- Raminta Vaiciuleviciute
- Department of Regenerative Medicine, State Research Institute Centre for Innovative Medicine, Santariskiu g. 5, 08410 Vilnius, Lithuania
| | - Ilona Uzieliene
- Department of Regenerative Medicine, State Research Institute Centre for Innovative Medicine, Santariskiu g. 5, 08410 Vilnius, Lithuania
| | - Paulius Bernotas
- Department of Regenerative Medicine, State Research Institute Centre for Innovative Medicine, Santariskiu g. 5, 08410 Vilnius, Lithuania
| | - Vitalij Novickij
- Department of Immunology, State Research Institute Centre for Innovative Medicine, Santariškių g. 5, 08410 Vilnius, Lithuania
- Faculty of Electronics, High Magnetic Field Institute, Vilnius Gediminas Technical University, Plytines g. 27, 10105 Vilnius, Lithuania
| | - Aidas Alaburda
- Life Sciences Center, Institute of Biosciences, Vilnius University, Sauletekio al. 7, 10257 Vilnius, Lithuania
| | - Eiva Bernotiene
- Department of Regenerative Medicine, State Research Institute Centre for Innovative Medicine, Santariskiu g. 5, 08410 Vilnius, Lithuania
- VilniusTech, Faculty of Fundamental Sciences, Sauletekio al. 11, 10223 Vilnius, Lithuania
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Zhou Z, Zheng J, Meng X, Wang F. Effects of Electrical Stimulation on Articular Cartilage Regeneration with a Focus on Piezoelectric Biomaterials for Articular Cartilage Tissue Repair and Engineering. Int J Mol Sci 2023; 24:ijms24031836. [PMID: 36768157 PMCID: PMC9915254 DOI: 10.3390/ijms24031836] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2022] [Revised: 01/10/2023] [Accepted: 01/13/2023] [Indexed: 01/19/2023] Open
Abstract
There is increasing evidence that chondrocytes within articular cartilage are affected by endogenous force-related electrical potentials. Furthermore, electrical stimulation (ES) promotes the proliferation of chondrocytes and the synthesis of extracellular matrix (ECM) molecules, which accelerate the healing of cartilage defects. These findings suggest the potential application of ES in cartilage repair. In this review, we summarize the pathogenesis of articular cartilage injuries and the current clinical strategies for the treatment of articular cartilage injuries. We then focus on the application of ES in the repair of articular cartilage in vivo. The ES-induced chondrogenic differentiation of mesenchymal stem cells (MSCs) and its potential regulatory mechanism are discussed in detail. In addition, we discuss the potential of applying piezoelectric materials in the process of constructing engineering articular cartilage, highlighting the important advances in the unique field of tissue engineering.
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Affiliation(s)
- Zhengjie Zhou
- The Key Laboratory of Pathobiology Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun 130021, China
| | - Jingtong Zheng
- The Key Laboratory of Pathobiology Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun 130021, China
| | - Xiaoting Meng
- Department of Histology & Embryology, College of Basic Medical Sciences, Jilin University, Changchun 130021, China
- Correspondence: (X.M.); (F.W.); Tel.: +86-0431-8561-9486 (X.M. & F.W.)
| | - Fang Wang
- The Key Laboratory of Pathobiology Ministry of Education, College of Basic Medical Sciences, Jilin University, Changchun 130021, China
- Correspondence: (X.M.); (F.W.); Tel.: +86-0431-8561-9486 (X.M. & F.W.)
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9
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Lin J, Yang Z, Wang L, Xing D, Lin J. Global research trends in extracellular vesicles based on stem cells from 1991 to 2021: A bibliometric and visualized study. Front Bioeng Biotechnol 2022; 10:956058. [PMID: 36110319 PMCID: PMC9468424 DOI: 10.3389/fbioe.2022.956058] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2022] [Accepted: 08/10/2022] [Indexed: 11/18/2022] Open
Abstract
Objective: With the development of extracellular vesicles (EVs) based on stem cells research all over the world, our present study was aiming to discover the global trends in this field. Methods: All publications related to EVs based on stem cells from 1991 to 2021 were collected from the Science Citation Index-Expanded of Web of Science Subsequently, the data were evaluated using the bibliometric methodology. In terms of visualized study, the VOS viewer software was performed to investigate the bibliographic coupling, co-citation, co-authorship, and co-occurrence trends, and last for the publication’s trends involved in the field of EVs based on stem cells. Results: A total of 8,208 publications were retrieved and the relative number of global publications and research interests were increasing every year especially in recent 5 years. China rank top one in terms of total publications, prolific authors, and funds, whereas the USA made the greatest contributions with the most total citations and highest H-index to the global research. Stem cell research therapy contributed the highest publications, whereas the journal of PLOS ONE showed the best total link strength. The Shanghai Jiao Tong University, University of California System, and Harvard University were the most contributive institutions. The global studies could be divided into six clusters as follows: cancer research, musculoskeletal system research, respiratory system research, urinary system and endocrine system research, nerve system research, and cardiovascular system research. All the directions were predicted to still hotspots in near future researches in this field. Conclusion: The total number of publications about EVs based stem cells would be increasing according to the current global trends. China and the USA was the largest contributors in this field. Further efforts should be put in the directions of cancer research, musculoskeletal system research, respiratory system research, urinary system and endocrine system research, nerve system research, as well was cardiovascular system research in this field of EVs based stem cells.
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Affiliation(s)
- Jianjing Lin
- Arthritis Clinical and Research Center, Peking University People’s Hospital, Beijing, China
- Arthritis Institute, Peking University, Beijing, China
- Department of Sports Medicine and Rehabilitation, Peking University Shenzhen Hospital, Shenzhen, China
| | - Zhen Yang
- Arthritis Clinical and Research Center, Peking University People’s Hospital, Beijing, China
- Arthritis Institute, Peking University, Beijing, China
| | - Li Wang
- Department of Biomedical Engineering, Institute of Future Technology, Peking University, Beijing, China
| | - Dan Xing
- Arthritis Clinical and Research Center, Peking University People’s Hospital, Beijing, China
- Arthritis Institute, Peking University, Beijing, China
- *Correspondence: Dan Xing, ; Jianhao Lin,
| | - Jianhao Lin
- Arthritis Clinical and Research Center, Peking University People’s Hospital, Beijing, China
- Arthritis Institute, Peking University, Beijing, China
- *Correspondence: Dan Xing, ; Jianhao Lin,
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10
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Wang Z, Le H, Wang Y, Liu H, Li Z, Yang X, Wang C, Ding J, Chen X. Instructive cartilage regeneration modalities with advanced therapeutic implantations under abnormal conditions. Bioact Mater 2022; 11:317-338. [PMID: 34977434 PMCID: PMC8671106 DOI: 10.1016/j.bioactmat.2021.10.002] [Citation(s) in RCA: 41] [Impact Index Per Article: 20.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 09/19/2021] [Accepted: 10/02/2021] [Indexed: 12/12/2022] Open
Abstract
The development of interdisciplinary biomedical engineering brings significant breakthroughs to the field of cartilage regeneration. However, cartilage defects are considerably more complicated in clinical conditions, especially when injuries occur at specific sites (e.g., osteochondral tissue, growth plate, and weight-bearing area) or under inflammatory microenvironments (e.g., osteoarthritis and rheumatoid arthritis). Therapeutic implantations, including advanced scaffolds, developed growth factors, and various cells alone or in combination currently used to treat cartilage lesions, address cartilage regeneration under abnormal conditions. This review summarizes the strategies for cartilage regeneration at particular sites and pathological microenvironment regulation and discusses the challenges and opportunities for clinical transformation.
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Affiliation(s)
- Zhonghan Wang
- Department of Plastic and Reconstruct Surgery, The First Hospital of Jilin University, 1 Xinmin Street, Changchun, 130021, PR China
- Department of Orthopedics, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, 130041, PR China
| | - Hanxiang Le
- Department of Orthopedics, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, 130041, PR China
| | - Yanbing Wang
- Department of Orthopedics, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, 130041, PR China
| | - He Liu
- Department of Orthopedics, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, 130041, PR China
| | - Zuhao Li
- Department of Orthopedics, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, 130041, PR China
| | - Xiaoyu Yang
- Department of Orthopedics, The Second Hospital of Jilin University, 218 Ziqiang Street, Changchun, 130041, PR China
| | - Chenyu Wang
- Department of Plastic and Reconstruct Surgery, The First Hospital of Jilin University, 1 Xinmin Street, Changchun, 130021, PR China
| | - Jianxun Ding
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, 130022, PR China
| | - Xuesi Chen
- Key Laboratory of Polymer Ecomaterials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, 5625 Renmin Street, Changchun, 130022, PR China
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11
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In vitro antitumor activity of nano-pulse stimulation on human anaplastic thyroid cancer cells through nitric oxide-dependent mechanisms. Bioelectrochemistry 2022; 145:108093. [DOI: 10.1016/j.bioelechem.2022.108093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 02/21/2022] [Accepted: 02/26/2022] [Indexed: 11/17/2022]
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12
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Tan S, Yao Y, Yang Q, Yuan XL, Cen LP, Ng TK. Diversified Treatment Options of Adult Stem Cells for Optic Neuropathies. Cell Transplant 2022; 31. [PMID: 36165292 PMCID: PMC9523835 DOI: 10.1177/09636897221123512] [Citation(s) in RCA: 2] [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: 04/21/2022] [Revised: 07/28/2022] [Accepted: 08/16/2022] [Indexed: 02/05/2023] Open
Abstract
Optic neuropathies refer to a group of ocular disorders with abnormalities or dysfunction of the optic nerve, sharing a common pathophysiology of retinal ganglion cell (RGC) death and axonal loss. RGCs, as the retinal neurons in the central nervous system, show limited capacity in regeneration or recovery upon diseases or after injuries. Critically, there is still no effective clinical treatment to cure most types of optic neuropathies. Recently, stem cell therapy was proposed as a potential treatment strategy for optic neuropathies. Adult stem cells, including mesenchymal stem cells and hematopoietic stem cells, have been applied in clinical trials based on their neuroprotective properties. In this article, the applications of adult stem cells on different types of optic neuropathies and the related mechanisms will be reviewed. Research updates on the strategies to enhance the neuroprotective effects of human adult stem cells will be summarized. This review article aims to enlighten the research scientists on the diversified functions of adult stem cells and consideration of adult stem cells as a potential treatment for optic neuropathies in future clinical practices.
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Affiliation(s)
- Shaoying Tan
- Joint Shantou International Eye Center of Shantou University and The Chinese University of Hong Kong, Shantou, China
- School of Optometry, The Hong Kong Polytechnic University, Kowloon, Hong Kong
- Research Centre for SHARP Vision, The Hong Kong Polytechnic University, Kowloon, Hong Kong
| | - Yao Yao
- Joint Shantou International Eye Center of Shantou University and The Chinese University of Hong Kong, Shantou, China
- Shantou University Medical College, Shantou, China
| | - Qichen Yang
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Kowloon, Hong Kong
| | - Xiang-Ling Yuan
- Joint Shantou International Eye Center of Shantou University and The Chinese University of Hong Kong, Shantou, China
- Shantou University Medical College, Shantou, China
| | - Ling-Ping Cen
- Joint Shantou International Eye Center of Shantou University and The Chinese University of Hong Kong, Shantou, China
| | - Tsz Kin Ng
- Joint Shantou International Eye Center of Shantou University and The Chinese University of Hong Kong, Shantou, China
- Shantou University Medical College, Shantou, China
- Department of Ophthalmology and Visual Sciences, The Chinese University of Hong Kong, Kowloon, Hong Kong
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13
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Kong Y, Duan J, Liu F, Han L, Li G, Sun C, Sang Y, Wang S, Yi F, Liu H. Regulation of stem cell fate using nanostructure-mediated physical signals. Chem Soc Rev 2021; 50:12828-12872. [PMID: 34661592 DOI: 10.1039/d1cs00572c] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
One of the major issues in tissue engineering is regulation of stem cell differentiation toward specific lineages. Unlike biological and chemical signals, physical signals with adjustable properties can be applied to stem cells in a timely and localized manner, thus making them a hot topic for research in the fields of biomaterials, tissue engineering, and cell biology. According to the signals sensed by cells, physical signals used for regulating stem cell fate can be classified into six categories: mechanical, light, thermal, electrical, acoustic, and magnetic. In most cases, external macroscopic physical fields cannot be used to modulate stem cell fate, as only the localized physical signals accepted by the surface receptors can regulate stem cell differentiation via nanoscale fibrin polysaccharide fibers. However, surface receptors related to certain kinds of physical signals are still unknown. Recently, significant progress has been made in the development of functional materials for energy conversion. Consequently, localized physical fields can be produced by absorbing energy from an external physical field and subsequently releasing another type of localized energy through functional nanostructures. Based on the above concepts, we propose a methodology that can be utilized for stem cell engineering and for the regulation of stem cell fate via nanostructure-mediated physical signals. In this review, the combined effect of various approaches and mechanisms of physical signals provides a perspective on stem cell fate promotion by nanostructure-mediated physical signals. We expect that this review will aid the development of remote-controlled and wireless platforms to physically guide stem cell differentiation both in vitro and in vivo, using optimized stimulation parameters and mechanistic investigations while driving the progress of research in the fields of materials science, cell biology, and clinical research.
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Affiliation(s)
- Ying Kong
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, China.
| | - Jiazhi Duan
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, China.
| | - Feng Liu
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, China.
| | - Lin Han
- Institute of Marine Science and Technology, Shandong University, Qingdao, 266200, China.
| | - Gang Li
- Neurological Surgery, Qilu Hospital of Shandong University, Jinan, 250012, China
| | - Chunhui Sun
- Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong, Institute for Advanced Interdisciplinary Research (iAIR), University of Jinan, Jinan, 250022, China
| | - Yuanhua Sang
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, China.
| | - Shuhua Wang
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, China.
| | - Fan Yi
- The Key Laboratory of Infection and Immunity of Shandong Province, Department of Pharmacology, School of Basic Medical Science, Shandong University, Jinan, 250012, China.
| | - Hong Liu
- State Key Laboratory of Crystal Materials, Shandong University, Jinan, 250100, China. .,Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of Shandong, Institute for Advanced Interdisciplinary Research (iAIR), University of Jinan, Jinan, 250022, China
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Li K, Fan L, Lin J, Heng BC, Deng Z, Zheng Q, Zhang J, Jiang Y, Ge Z. Nanosecond pulsed electric fields prime mesenchymal stem cells to peptide ghrelin and enhance chondrogenesis and osteochondral defect repair in vivo. SCIENCE CHINA-LIFE SCIENCES 2021; 65:927-939. [PMID: 34586575 DOI: 10.1007/s11427-021-1983-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 07/22/2021] [Indexed: 01/07/2023]
Abstract
Mesenchymal stem cells (MSCs) are important cell sources in cartilage tissue development and homeostasis, and multiple strategies have been developed to improve MSCs chondrogenic differentiation with an aim of promoting cartilage regeneration. Here we report the effects of combining nanosecond pulsed electric fields (nsPEFs) followed by treatment with ghrelin (a hormone that stimulates release of growth hormone) to regulate chondrogenesis of MSCs. nsPEFs and ghrelin were observed to separately enhance the chondrogenesis of MSCs, and the effects were significantly enhanced when the bioelectric stimulation and hormone were combined, which in turn improved osteochondral tissue repair of these cells within Sprague Dawley rats. We further found that nsPEFs can prime MSCs to be more receptive to subsequent stimuli of differentiation by upregulated Oct4/Nanog and activated JNK signaling pathway. Ghrelin initiated chondrogenic differentiation by activation of ERK1/2 signaling pathway, and RNA-seq results indicated 243 genes were regulated, and JAK-STAT signaling pathway was involved. Interestingly, the sequential order of applying these two stimuli is critical, with nsPEFs pretreatment followed by ghrelin enhanced chondrogenesis of MSCs in vitro and subsequent cartilage regeneration in vivo, but not vice versa. This synergistic prochondrogenic effects provide us new insights and strategies for future cell-based therapies.
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Affiliation(s)
- Kejia Li
- Department of Biomedical Engineering, College of Engineering, Peking University, Beijing, 100871, China
| | - Litong Fan
- Department of Biomedical Engineering, College of Engineering, Peking University, Beijing, 100871, China
| | - Jianjing Lin
- Arthritis Clinical and Research Center, Peking University People's Hospital, Beijing, 100044, China.,Arthritis Institute, Peking University, Beijing, 100871, China
| | - Boon Chin Heng
- Peking University School of Stomatology, Beijing, 100081, China
| | - Zhantao Deng
- Department of Orthopedics, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, China
| | - Qiujian Zheng
- Department of Orthopedics, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, China
| | - Jue Zhang
- Institute of Biomechanics and Biomedical Engineering, College of Engineering, Peking University, Beijing, 100871, China
| | - Yangzi Jiang
- Institute for Tissue Engineering and Regenerative Medicine, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, 999077, China. .,School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, 999077, China.
| | - Zigang Ge
- Department of Biomedical Engineering, College of Engineering, Peking University, Beijing, 100871, China. .,Department of Biomedical Engineering, College of Future Technology, Peking University, Beijing, 100871, China.
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15
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Lin J, Wang L, Lin J, Liu Q. Dual Delivery of TGF-β3 and Ghrelin in Microsphere/Hydrogel Systems for Cartilage Regeneration. Molecules 2021; 26:5732. [PMID: 34641274 PMCID: PMC8510483 DOI: 10.3390/molecules26195732] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 09/09/2021] [Accepted: 09/18/2021] [Indexed: 11/28/2022] Open
Abstract
Articular cartilage (AC) damage is quite common, but due to AC's poor self-healing ability, the damage can easily develop into osteoarthritis (OA). To solve this problem, we developed a microsphere/hydrogel system that provides two growth factors that promote cartilage repair: transforming growth factor-β3 (TGF-β3) to enhance cartilage tissue formation and ghrelin synergy TGF-β to significantly enhance the chondrogenic differentiation. The hydrogel and microspheres were characterized in vitro, and the biocompatibility of the system was verified. Double emulsion solvent extraction technology (w/o/w) is used to encapsulate TGF-β3 and ghrelin into microspheres, and these microspheres are encapsulated in a hydrogel to continuously release TGF-β3 and ghrelin. According to the chondrogenic differentiation ability of mesenchymal stem cells (MSCs) in vitro, the concentrations of the two growth factors were optimized to promote cartilage regeneration.
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Affiliation(s)
- Jianjing Lin
- Arthritis Clinical and Research Center, Peking University People’s Hospital, No. 11 Xizhimen South Street, Beijing 100044, China; (J.L.); (J.L.)
- Arthritis Institute, Peking University, Beijing 100044, China
| | - Li Wang
- Department of Biomedical Engineering, College of Engineering, Peking University, Beijing 100871, China;
| | - Jianhao Lin
- Arthritis Clinical and Research Center, Peking University People’s Hospital, No. 11 Xizhimen South Street, Beijing 100044, China; (J.L.); (J.L.)
- Arthritis Institute, Peking University, Beijing 100044, China
| | - Qiang Liu
- Arthritis Clinical and Research Center, Peking University People’s Hospital, No. 11 Xizhimen South Street, Beijing 100044, China; (J.L.); (J.L.)
- Arthritis Institute, Peking University, Beijing 100044, China
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16
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Abstract
Due to the ability to differentiate into variety of cell types, mesenchymal stem cells (MSCs) hold promise as source in cell-based therapy for treating injured tissue and degenerative diseases. The potential use of MSCs to replace or repair damaged tissues may depend on the efficient differentiation protocols to derive specialized cells without any negative side effects. Identification of appropriate cues that support the lineage-specific differentiation of stem cells is critical for tissue healing and cellular therapy. Recently, a number of stimuli have been utilized to direct the differentiation of stem cells. Biochemical stimuli such as small molecule, growth factor and miRNA have been traditionally used to regulate the fate of stem cells. In recent years, many studies have reported that biophysical stimuli including cyclic mechanical strain, fluid shear stress, microgravity, electrical stimulation, matrix stiffness and topography can also be sensed by stem cells through mechanical receptors, thus affecting the stem cell behaviors including their differentiation potential. In this paper, we review all the most recent literature on the application of biochemical and biophysical cues on regulating MSC differentiation. An extensive literature search was done using electronic database (Medline/Pubmed). Although there are still some challenges that need to be taken into consideration before translating these methods into clinics, biochemical and biophysical stimulation appears to be an attractive method to manipulate the lineage commitment of MSCs.
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17
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Haberkorn I, Siegenthaler L, Buchmann L, Neutsch L, Mathys A. Enhancing single-cell bioconversion efficiency by harnessing nanosecond pulsed electric field processing. Biotechnol Adv 2021; 53:107780. [PMID: 34048886 DOI: 10.1016/j.biotechadv.2021.107780] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2020] [Revised: 04/23/2021] [Accepted: 05/18/2021] [Indexed: 11/29/2022]
Abstract
Nanosecond pulsed electric field (nsPEF) processing is gaining momentum as a physical means for single-cell bioconversion efficiency enhancement. The technology allows biomass yields per substrate (YX/S) to be leveraged and poses a viable option for stimulating intracellular compound production. NsPEF processing thus resonates with myriad domains spanning the pharmaceutical and medical sectors, as well as food and feed production. The exact working mechanisms underlying nsPEF-based enhancement of bioconversion efficiency, however, remain elusive, and a better understanding would be pivotal for leveraging process control to broaden the application of nsPEF and scale-up industrial implementation. To bridge this gap, the study provides the electrotechnological and metabolic fundamentals of nsPEF processing in the bio-based domain to enable a critical evaluation of pathways underlying the enhancement of single-cell bioconversion efficiency. Evidence suggests that treating cells during the rapid proliferating and thus the early to mid-exponential state of cellular growth is critical to promoting bioconversion efficiency. A combined effect of transient intracellular and sublethal stress induction and effects caused on the plasma membrane level result in an enhancement of cellular bioconversion efficiency. Congruency exists regarding the involvement of transient cytosolic Ca2+ hubs in nsPEF treatment responses, as well as that of reactive oxygen species formation culminating in the onset of cellular response pathways. A distinct assignment of single effects and their contributions to enhancing bioconversion efficiency, however, remains challenging. Current applications of nsPEF processing comprise microalgae, bacteria, and yeast biorefineries, but these endeavors are in their infancies with limitations associated with a lack of understanding of the underlying treatment mechanisms, an incomplete reporting, insufficient characterization, and control of processing parameters. The study aids in fostering the upsurge of nsPEF applications in the bio-based domain by providing a basis to gain a better understanding of cellular mechanisms underlying an nsPEF-based enhancement of cellular bioconversion efficiency and suggests best practice guidelines for nsPEF documentation for improved knowledge transfer. Better understanding and reporting of processes parameters and consequently improved process control could foster industrial-scale nsPEF realization and ultimately aid in perpetuating nsPEF applicability within the bio-based domain.
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Affiliation(s)
- Iris Haberkorn
- ETH Zürich, Laboratory of Sustainable Food Processing, Institute of Food, Nutrition and Health, Schmelzbergstrasse 9, 8092 Zürich, Switzerland.
| | - Lya Siegenthaler
- ETH Zürich, Laboratory of Sustainable Food Processing, Institute of Food, Nutrition and Health, Schmelzbergstrasse 9, 8092 Zürich, Switzerland.
| | | | - Lukas Neutsch
- ZHAW, Bioprocess Technology Research Group, Grüentalstrasse 14, 8820 Wädenswil, Switzerland.
| | - Alexander Mathys
- ETH Zürich, Laboratory of Sustainable Food Processing, Institute of Food, Nutrition and Health, Schmelzbergstrasse 9, 8092 Zürich, Switzerland.
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18
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Gu Y, Zhang L, Yang H, Zhuang J, Sun Z, Guo J, Guan M. Nanosecond pulsed electric fields impair viability and mucin expression in mucinous colorectal carcinoma cell. Bioelectrochemistry 2021; 141:107844. [PMID: 34052542 DOI: 10.1016/j.bioelechem.2021.107844] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2021] [Revised: 05/11/2021] [Accepted: 05/13/2021] [Indexed: 12/20/2022]
Abstract
Nanosecond pulsed electric fields (nsPEFs) are a non-thermal technology that can induce a myriad of biological responses and changes in cellular physiology. nsPEFs have gained significant attention as a novel cancer therapy. However, studies investigating the application of nsPEF in mucinous carcinomas are scarce. In this study, we explored several biological responses in two mucinous colorectal adenocarcinoma cell lines, LS 174T and HT-29, to nsPEF treatment. We determined the overall cell survival and viability rates following nsPEF treatment using CCK-8 and colony formation assays. We measured the intracellular effects of nsPEF treatment by analyzing cell cycle distribution, cell apoptosis and mitochondrial potential. We also analyzed mucin production at both mRNA and protein levels. Our results showed that nsPEF treatment significantly reduced mucinous cell viability in a dose-dependent manner. nsPEF treatment increased cell cycles arrest at G0/G1 while the proportion of G2/M cells gradually decreased. Cell apoptosis increased following nsPEF treatment with a clear loss in mitochondrial membrane potential. Furthermore, the protein expression of functional mucin family members decreased after nsPEF treatment. In conclusion, nsPEF treatment reduced MCRC cell viability, cell proliferation, and mucin protein production while promoted apoptosis. Our work is a pilot study that projects some insights into the potential clinical applications of nsPEFs in treating mucinous colorectal carcinoma.
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Affiliation(s)
- Yiran Gu
- Jiangsu Key Laboratory of Medical Optics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, Jiangsu, China; School of Life Science, Shanghai University, Shanghai 200444, China
| | - Long Zhang
- State Key Laboratory of Solid-State Lighting Research Center of Light for Health, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, Jiangsu, China
| | - Hua Yang
- Department of General Surgery, Zhongshan Hospital (South Branch), Fudan University, Shanghai 200083, China
| | - Jie Zhuang
- State Key Laboratory of Solid-State Lighting Research Center of Light for Health, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, Jiangsu, China
| | - Zhenglong Sun
- State Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming 650500, China
| | - Jinsong Guo
- State Key Laboratory of Solid-State Lighting Research Center of Light for Health, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou 215163, Jiangsu, China
| | - Miao Guan
- School of Life Science and Technology, Kunming University of Science and Technology, Kunming 650500, China
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Yang WS, Shi Z, Dong X, Liu P, Chen M, Hu Y. Involvement of 5-HT-BDNF signaling axis in mediating synergistic antidepressant-like effects after combined administration of two oligosaccharide esters. Food Sci Nutr 2021; 9:1180-1191. [PMID: 33598202 PMCID: PMC7866620 DOI: 10.1002/fsn3.2098] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Revised: 12/17/2020] [Accepted: 12/18/2020] [Indexed: 12/15/2022] Open
Abstract
Potential mechanisms of depression involving herbal medicines and their specific compounds include elevated 5-HT level and downstream BDNF pathway. To identify potentially new combined therapeutic strategies, 3,6'-disinapoylsucrose (DISS) and tenuifoliside A (TFSA) have been observed to show antidepressant-like effects and its related 5-HT-BDNF pathway. We have tried to investigate whether combined administration of DISS and TFSA exerted more effective in the treatment of depression, as assessed through tail suspension test (TST) and forced swimming test (FST). In addition, we also analyzed the expression of three important proteins, cyclic adenosine monophosphate (cAMP) response element binding (CREB), brain-derived neurotrophic factor (BDNF), and cAMP-regulated transcriptional coactivators (CRTC1), which have been shown to be involved in the regulation of the neurotrophic factors in the hippocampus. The DISS and TFSA separately, both at a dose of 5 mg/kg each, displayed small effect in the immobility time. However, combined treatment of these two in multiple doses exhibited better effect. Moreover, combined treatment of DISS and TFSA also demonstrated enhanced levels of 5-hydroxytryptamine (5-HT), and stronger increase in the phosphorylation levels of CREB, BDNF, and CRTC1 proteins in the hippocampus. Overall, our results indicated that coadministration of these two oligosaccharide esters at low dose may induce more pronounced antidepressant activity, in comparison with individual treatment even at high dosage. Thus, the antidepressant properties of both these compounds can be attributed to their ability to influence 5-HT and BDNF pathway, and thereby suggesting that this combination strategy can definitely act as alternative therapy for depression disorder with very limited side effects.
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Affiliation(s)
- Wen Shan Yang
- Department of PharmacyMedical Supplier CenterChinese PLA General HospitalBeijingChina
- Medical School of Chinese PLAChinese PLA General HospitalBeijingChina
- Department of OutpatientGroup 82 Military HospitalBaodingChina
| | - Zhen‐Guo Shi
- Department of PharmacyMedical Supplier CenterChinese PLA General HospitalBeijingChina
- Medical AffairPharmacy OfficeChinese PLA General HospitalBeijingChina
| | - Xian‐Zhe Dong
- Department of PharmacyMedical Supplier CenterChinese PLA General HospitalBeijingChina
- Department of PharmacyXuanwu Hospital of Capital Medical UniversityBeijingChina
| | - Ping Liu
- Department of PharmacyMedical Supplier CenterChinese PLA General HospitalBeijingChina
| | - Meng‐li Chen
- Department of PharmacyMedical Supplier CenterChinese PLA General HospitalBeijingChina
| | - Yuan Hu
- Department of PharmacyMedical Supplier CenterChinese PLA General HospitalBeijingChina
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20
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Farooqi AR, Zimmermann J, Bader R, van Rienen U. Computational study on electromechanics of electroactive hydrogels for cartilage-tissue repair. COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE 2020; 197:105739. [PMID: 32950923 DOI: 10.1016/j.cmpb.2020.105739] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Accepted: 08/31/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND AND OBJECTIVE The self-repair capability of articular cartilage is limited because of non-vascularization and low turnover of its extracellular matrix. Regenerating hyaline cartilage remains a significant clinical challenge as most non-surgical and surgical treatments provide only mid-term relief. Eventually, further pain and mobility loss occur for many patients in the long run due to further joint deterioration. Repair of articular cartilage tissue using electroactive scaffolds and biophysical stimuli like electrical and osmotic stimulation may have the potential to heal cartilage defects occurring due to trauma, osteoarthritis, or sport-related injuries. Therefore, the focus of the current study is to present a computational model of electroactive hydrogels for the cartilage-tissue repair as a first step towards an optimized experimental design. METHODS The multiphysics transport model that mainly includes the Poisson-Nernst-Planck equations and the mechanical equation is used to find the electrical stimulation response of the polyelectrolyte hydrogels. Based upon this, a numerical model on electromechanics of electroactive hydrogels seeded with chondrocytes is presented employing the open-source software FEniCS, which is a Python library for finite-element analysis. RESULTS We analyzed the ionic concentrations and electric potential in a hydrogel sample and the cell culture medium, the osmotic pressure created due to ionic concentration variations and the resulting hydrogel displacement. The proposed mathematical model was validated with examples from literature. CONCLUSIONS The presented model for the electrical and osmotic stimulation of a hydrogel sample can serve as a useful tool for the development and analysis of a cartilaginous scaffold employing electrical stimulation. By analyzing various parameters, we pave the way for future research on a finer scale using open-source software.
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Affiliation(s)
- Abdul Razzaq Farooqi
- Institute of General Electrical Engineering, Faculty of Computer Science and Electrical Engineering, University of Rostock, Albert Einstein Str. 2, Rostock 18059, Germany; Department of Electronic Engineering, Faculty of Engineering, The Islamia University of Bahawalpur, Bahawalpur 63100, Pakistan.
| | - Julius Zimmermann
- Institute of General Electrical Engineering, Faculty of Computer Science and Electrical Engineering, University of Rostock, Albert Einstein Str. 2, Rostock 18059, Germany
| | - Rainer Bader
- Department of Orthopaedics, University Medical Center Rostock, Rostock 18057, Germany; Department Life, Light & Matter, University of Rostock, Rostock 18051, Germany
| | - Ursula van Rienen
- Institute of General Electrical Engineering, Faculty of Computer Science and Electrical Engineering, University of Rostock, Albert Einstein Str. 2, Rostock 18059, Germany; Department Life, Light & Matter, University of Rostock, Rostock 18051, Germany
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21
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Hepatocyte growth factor (HGF) and stem cell factor (SCF) maintained the stemness of human bone marrow mesenchymal stem cells (hBMSCs) during long-term expansion by preserving mitochondrial function via the PI3K/AKT, ERK1/2, and STAT3 signaling pathways. Stem Cell Res Ther 2020; 11:329. [PMID: 32736659 PMCID: PMC7393921 DOI: 10.1186/s13287-020-01830-4] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 05/23/2020] [Accepted: 07/13/2020] [Indexed: 12/24/2022] Open
Abstract
Background Mesenchymal stem cells (MSCs) have a limited self-renewal ability, impaired multi-differentiation potential, and undetermined cell senescence during in vitro series expansion. To address this concern, we investigated the effects of the microenvironment provided by stem cells from human exfoliated deciduous teeth (SHED) in maintaining the stemness of human bone marrow mesenchymal stem cells (hBMSCs) and identified the key factors and possible mechanisms responsible for maintaining the stemness of MSCs during long-term expansion in vitro. Methods The passage 3 (P3) to passage 8 (P8) hBMSCs were cultured in the conditioned medium from SHED (SHED-CM). The percentage of senescent cells was evaluated by β-galactosidase staining. In addition, the osteogenic differentiation potential was analyzed by reverse transcription quantitative PCR (RT-qPCR), Western blot, alizarin red, and alkaline phosphatase (ALP) staining. Furthermore, RT-qPCR results identified hepatocyte growth factor (HGF) and stem cell factor (SCF) as key factors. Thus, the effects of HGF and SCF on mitochondrial function were assessed by measuring the ROS and mitochondrial membrane potential levels. Finally, selected mitochondrial-related proteins associated with the PI3K/AKT, ERK1/2, and STAT3 signaling pathways were investigated to determine the effects of HGF and SCF in preserving the mitochondrial function of hBMSCs during long-term expansion. Results SHED-CM had significantly enhanced the cell proliferation, reduced the senescent cells, and maintained the osteogenesis and pro-angiogenic capacity in P8 hBMSCs during long-term expansion. In addition, hBMSCs treated with 100 ng/ml HGF and 10 ng/ml SCF had reduced ROS levels and preserved mitochondrial membrane potential compared with P8 hBMSCs during long-term expansion. Furthermore, HGF and SCF upregulated the expression of mitochondrial-related proteins associated with the PI3K/AKT, ERK1/2, and STAT3 signaling pathways, possibly contributing to the maintenance of hBMSCs stemness by preserving mitochondrial function. Conclusion Both HGF and SCF are key factors in maintaining the stemness of hBMSCs by preserving mitochondrial function through the expression of proteins associated with the PI3K/AKT, ERK1/2, and STAT3 signaling pathways. This study provides new insights into the anti-senescence capability of HGF and SCF, as well as new evidence for their potential application in optimizing the long-term culture of MSCs.
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22
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Li K, Ning T, Wang H, Jiang Y, Zhang J, Ge Z. Nanosecond pulsed electric fields enhance mesenchymal stem cells differentiation via DNMT1-regulated OCT4/NANOG gene expression. Stem Cell Res Ther 2020; 11:308. [PMID: 32698858 PMCID: PMC7374836 DOI: 10.1186/s13287-020-01821-5] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 06/25/2020] [Accepted: 07/09/2020] [Indexed: 02/28/2023] Open
Abstract
Background Multiple strategies have been proposed to promote the differentiation potential of mesenchymal stem cells (MSCs), which is the fundamental property in tissue formation and regeneration. However, these strategies are relatively inefficient that limit the application. In this study, we reported a novel and efficient strategy, nanosecond pulsed electric fields (nsPEFs) stimulation, which can enhance the trilineage differentiation potential of MSCs, and further explained the mechanism behind. Methods We used histological staining to screen out the nsPEFs parameters that promoted the trilineage differentiation potential of MSCs, and further proved the effect of nsPEFs by detecting the functional genes. In order to explore the corresponding mechanism, we examined the expression of pluripotency genes and the methylation status of their promoters. Finally, we targeted the DNA methyltransferase which was affected by nsPEFs. Results The trilineage differentiation of bone marrow-derived MSCs was significantly enhanced in vitro by simply pre-treating with 5 pulses of nsPEFs stimulation (energy levels as 10 ns, 20 kV/cm; 100 ns, 10 kV/cm), due to that the nsPEFs demethylated the promoters of stem cell pluripotency genes OCT4 and NANOG through instantaneous downregulation of DNA methylation transferase 1 (DNMT1), thereby increasing the expression of OCT4 and NANOG for up to 3 days, and created a treatment window period of stem cells. Conclusions In summary, nsPEFs can enhance MSCs differentiation via the epigenetic regulation and could be a safe and effective strategy for future stem cell application.
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Affiliation(s)
- Kejia Li
- Department of Biomedical Engineering, College of Engineering, Peking University, Beijing, 100871, China
| | - Tong Ning
- Department of Biomedical Engineering, College of Engineering, Peking University, Beijing, 100871, China
| | - Hao Wang
- Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China
| | - Yangzi Jiang
- Institute for Tissue Engineering and Regenerative Medicine, School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, Hong Kong SAR, China.,School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, Hong Kong SAR, China
| | - Jue Zhang
- Institute of Biomechanics and Biomedical Engineering, College of Engineering, Peking University, Beijing, China
| | - Zigang Ge
- Department of Biomedical Engineering, College of Engineering, Peking University, Beijing, 100871, China.
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23
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Chen J, Huang Y, Yang J, Li K, Jiang Y, Heng BC, Cai Q, Zhang J, Ge Z. Multiple nanosecond pulsed electric fields stimulation with conductive poly(
l
‐lactic acid)/carbon nanotubes films maintains the multipotency of mesenchymal stem cells during prolonged in vitro culture. J Tissue Eng Regen Med 2020; 14:1136-1148. [DOI: 10.1002/term.3088] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 06/03/2020] [Accepted: 06/06/2020] [Indexed: 12/19/2022]
Affiliation(s)
- Jiaqing Chen
- Department of Biomedical Engineering, College of EngineeringPeking University Beijing China
| | - Yiqian Huang
- State Key Laboratory of Organic‐Inorganic Composites, Beijing Laboratory of Biomedical MaterialsBeijing University of Chemical Technology Beijing China
| | - Jiabei Yang
- Department of Biomedical Engineering, College of EngineeringPeking University Beijing China
| | - Kejia Li
- Department of Biomedical Engineering, College of EngineeringPeking University Beijing China
| | - Yangzi Jiang
- Institute for Tissue Engineering and Regenerative Medicine, School of Biomedical Sciences, Faculty of MedicineThe Chinese University of Hong Kong Hong Kong China
| | - Boon Chin Heng
- Central LaboratoryPeking University School of Stomatology Beijing Beijing China
| | - Qing Cai
- State Key Laboratory of Organic‐Inorganic Composites, Beijing Laboratory of Biomedical MaterialsBeijing University of Chemical Technology Beijing China
| | - Jue Zhang
- Academy for Advanced Interdisciplinary StudiesPeking University Beijing China
| | - Zigang Ge
- Department of Biomedical Engineering, College of EngineeringPeking University Beijing China
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24
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Budgude P, Kale V, Vaidya A. Mesenchymal stromal cell‐derived extracellular vesicles as cell‐free biologics for the ex vivo expansion of hematopoietic stem cells. Cell Biol Int 2020; 44:1078-1102. [DOI: 10.1002/cbin.11313] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 01/31/2020] [Indexed: 12/11/2022]
Affiliation(s)
- Pallavi Budgude
- Symbiosis Centre for Stem Cell ResearchSymbiosis International (Deemed University) Pune 412115 India
| | - Vaijayanti Kale
- Symbiosis Centre for Stem Cell ResearchSymbiosis International (Deemed University) Pune 412115 India
| | - Anuradha Vaidya
- Symbiosis Centre for Stem Cell ResearchSymbiosis International (Deemed University) Pune 412115 India
- Symbiosis School of Biological SciencesSymbiosis International (Deemed University) Pune 412115 India
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25
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Leppik L, Oliveira KMC, Bhavsar MB, Barker JH. Electrical stimulation in bone tissue engineering treatments. Eur J Trauma Emerg Surg 2020; 46:231-244. [PMID: 32078704 PMCID: PMC7113220 DOI: 10.1007/s00068-020-01324-1] [Citation(s) in RCA: 99] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Accepted: 02/04/2020] [Indexed: 12/20/2022]
Abstract
Electrical stimulation (EStim) has been shown to promote bone healing and regeneration both in animal experiments and clinical treatments. Therefore, incorporating EStim into promising new bone tissue engineering (BTE) therapies is a logical next step. The goal of current BTE research is to develop combinations of cells, scaffolds, and chemical and physical stimuli that optimize treatment outcomes. Recent studies demonstrating EStim's positive osteogenic effects at the cellular and molecular level provide intriguing clues to the underlying mechanisms by which it promotes bone healing. In this review, we discuss results of recent in vitro and in vivo research focused on using EStim to promote bone healing and regeneration and consider possible strategies for its application to improve outcomes in BTE treatments. Technical aspects of exposing cells and tissues to EStim in in vitro and in vivo model systems are also discussed.
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Affiliation(s)
- Liudmila Leppik
- Frankfurt Initiative for Regenerative Medicine, Experimental Orthopedics and Trauma Surgery, J.W. Goethe University, Frankfurt/Main, Germany.
| | - Karla Mychellyne Costa Oliveira
- Frankfurt Initiative for Regenerative Medicine, Experimental Orthopedics and Trauma Surgery, J.W. Goethe University, Frankfurt/Main, Germany
| | - Mit Balvantray Bhavsar
- Frankfurt Initiative for Regenerative Medicine, Experimental Orthopedics and Trauma Surgery, J.W. Goethe University, Frankfurt/Main, Germany
| | - John Howard Barker
- Frankfurt Initiative for Regenerative Medicine, Experimental Orthopedics and Trauma Surgery, J.W. Goethe University, Frankfurt/Main, Germany
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26
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Hamada Y, Furumoto Y, Izutani A, Taniuchi S, Miyake M, Oyadomari M, Teranishi K, Shimomura N, Oyadomari S. Nanosecond pulsed electric fields induce the integrated stress response via reactive oxygen species-mediated heme-regulated inhibitor (HRI) activation. PLoS One 2020; 15:e0229948. [PMID: 32155190 PMCID: PMC7064201 DOI: 10.1371/journal.pone.0229948] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Accepted: 02/18/2020] [Indexed: 12/24/2022] Open
Abstract
The integrated stress response (ISR) is one of the most important cytoprotective mechanisms and is integrated by phosphorylation of the α subunit of eukaryotic translation initiation factor 2 (eIF2α). Four eIF2α kinases, heme-regulated inhibitor (HRI), double-stranded RNA-dependent protein kinase (PKR), PKR-like endoplasmic reticulum kinase (PERK), and general control nonderepressible 2 (GCN2), are activated in response to several stress conditions. We previously reported that nanosecond pulsed electric fields (nsPEFs) are a potential therapeutic tool for ISR activation. In this study, we examined which eIF2α kinase is activated by nsPEF treatment. To assess the responsible eIF2α kinase, we used previously established eIF2α kinase quadruple knockout (4KO) and single eIF2α kinase-rescued 4KO mouse embryonic fibroblast (MEF) cells. nsPEFs 70 ns in duration with 30 kV/cm electric fields caused eIF2α phosphorylation in wild-type (WT) MEF cells. On the other hand, nsPEF-induced eIF2α phosphorylation was completely abolished in 4KO MEF cells and was recovered by HRI overexpression. CM-H2DCFDA staining showed that nsPEFs generated reactive oxygen species (ROS), which activated HRI. nsPEF-induced eIF2α phosphorylation was blocked by treatment with the ROS scavenger N-acetyl-L-cysteine (NAC). Our results indicate that the eIF2α kinase HRI is responsible for nsPEF-induced ISR activation and is activated by nsPEF-generated ROS.
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Affiliation(s)
- Yoshimasa Hamada
- Division of Molecular Biology, Institute for Genome Research, Institute of Advanced Medical Sciences, Tokushima University, Tokushima, Japan
- Fujii Memorial Institute of Medical Sciences, Institute of Advanced Medical Sciences, Tokushima University, Tokushima, Japan
| | - Yuji Furumoto
- Institute of Technology and Science, Tokushima University, Tokushima, Japan
| | - Akira Izutani
- Institute of Technology and Science, Tokushima University, Tokushima, Japan
| | - Shusuke Taniuchi
- Division of Molecular Biology, Institute for Genome Research, Institute of Advanced Medical Sciences, Tokushima University, Tokushima, Japan
- Fujii Memorial Institute of Medical Sciences, Institute of Advanced Medical Sciences, Tokushima University, Tokushima, Japan
- Department of Molecular Physiology, Diabetes Therapeutics and Research Center, Institute of Advanced Medical Sciences, Tokushima University, Tokushima, Japan
| | - Masato Miyake
- Division of Molecular Biology, Institute for Genome Research, Institute of Advanced Medical Sciences, Tokushima University, Tokushima, Japan
- Fujii Memorial Institute of Medical Sciences, Institute of Advanced Medical Sciences, Tokushima University, Tokushima, Japan
- Department of Molecular Physiology, Diabetes Therapeutics and Research Center, Institute of Advanced Medical Sciences, Tokushima University, Tokushima, Japan
| | - Miho Oyadomari
- Division of Molecular Biology, Institute for Genome Research, Institute of Advanced Medical Sciences, Tokushima University, Tokushima, Japan
| | - Kenji Teranishi
- Institute of Technology and Science, Tokushima University, Tokushima, Japan
| | - Naoyuki Shimomura
- Institute of Technology and Science, Tokushima University, Tokushima, Japan
| | - Seiichi Oyadomari
- Division of Molecular Biology, Institute for Genome Research, Institute of Advanced Medical Sciences, Tokushima University, Tokushima, Japan
- Fujii Memorial Institute of Medical Sciences, Institute of Advanced Medical Sciences, Tokushima University, Tokushima, Japan
- Department of Molecular Physiology, Diabetes Therapeutics and Research Center, Institute of Advanced Medical Sciences, Tokushima University, Tokushima, Japan
- * E-mail:
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27
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Buchmann L, Mathys A. Perspective on Pulsed Electric Field Treatment in the Bio-based Industry. Front Bioeng Biotechnol 2019; 7:265. [PMID: 31681745 PMCID: PMC6805697 DOI: 10.3389/fbioe.2019.00265] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Accepted: 09/27/2019] [Indexed: 12/21/2022] Open
Abstract
The bio-based industry is urged to find solutions to meet the demands of a growing world population. In this context, increased resource efficiency is a major goal. Pulsed electric field (PEF) processing is a promising technological solution. Conventional PEF and the emerging area of nanosecond PEF (nsPEF) have been shown to induce various biological effects, with nsPEF inducing pronounced intracellular effects, which could provide solutions for currently faced challenges. Based on the flexibility and continuous operation of PEF and nsPEF processing, the technology can be integrated into many existing cultivation systems; its modularity provides an approach for inducing specific effects. Depending on the treatment conditions, selective inactivation, continuous extraction without impeding cell viability, as well as the stimulation of cell growth and/or cellular compound stimulation are potential applications in the bio-based industry. However, continuous treatment currently involves heterogeneous energy inputs. Increasing the homogeneity of PEF and nsPEF processing by considering the flow and electric field heterogeneity may allow for more targeted effects on biological cells, further increasing the potential of the technology for bio-based applications. We provide an overview of existing and potential applications of PEF and nsPEF and suggest that theoretical and practical analyses of flow and electric field heterogeneity may provide a basis for obtaining more targeted effects on biological cells and for further increasing the bio-based applications of the technology, which thereby could become a key technology for circular economy approaches in the future.
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Affiliation(s)
- Leandro Buchmann
- Laboratory of Sustainable Food Processing, Department of Health Sciences and Technology, Institute of Food Nutrition and Health, IFNH, ETH Zurich, Zurich, Switzerland
| | - Alexander Mathys
- Laboratory of Sustainable Food Processing, Department of Health Sciences and Technology, Institute of Food Nutrition and Health, IFNH, ETH Zurich, Zurich, Switzerland
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