1
|
Pio-Lopez L, Levin M. Aging as a loss of morphostatic information: A developmental bioelectricity perspective. Ageing Res Rev 2024; 97:102310. [PMID: 38636560 DOI: 10.1016/j.arr.2024.102310] [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: 11/05/2023] [Revised: 02/21/2024] [Accepted: 04/12/2024] [Indexed: 04/20/2024]
Abstract
Maintaining order at the tissue level is crucial throughout the lifespan, as failure can lead to cancer and an accumulation of molecular and cellular disorders. Perhaps, the most consistent and pervasive result of these failures is aging, which is characterized by the progressive loss of function and decline in the ability to maintain anatomical homeostasis and reproduce. This leads to organ malfunction, diseases, and ultimately death. The traditional understanding of aging is that it is caused by the accumulation of molecular and cellular damage. In this article, we propose a complementary view of aging from the perspective of endogenous bioelectricity which has not yet been integrated into aging research. We propose a view of aging as a morphostasis defect, a loss of biophysical prepattern information, encoding anatomical setpoints used for dynamic tissue and organ homeostasis. We hypothesize that this is specifically driven by abrogation of the endogenous bioelectric signaling that normally harnesses individual cell behaviors toward the creation and upkeep of complex multicellular structures in vivo. Herein, we first describe bioelectricity as the physiological software of life, and then identify and discuss the links between bioelectricity and life extension strategies and age-related diseases. We develop a bridge between aging and regeneration via bioelectric signaling that suggests a research program for healthful longevity via morphoceuticals. Finally, we discuss the broader implications of the homologies between development, aging, cancer and regeneration and how morphoceuticals can be developed for aging.
Collapse
Affiliation(s)
- Léo Pio-Lopez
- Allen Discovery Center, Tufts University, Medford, MA 02155, USA
| | - Michael Levin
- Allen Discovery Center, Tufts University, Medford, MA 02155, USA; Wyss Institute for Biologically Inspired Engineering, Boston, MA 02115, USA.
| |
Collapse
|
2
|
Mamaghaniyeh R, Zandieh A, Goliaei B, Nezamtaheri MS, Shariatpanahi SP. Effects of exposure to alternating low-intensity, intermediate-frequency electric fields on the differentiation of human leukemic cell line U937. Bioelectromagnetics 2024; 45:48-57. [PMID: 37870254 DOI: 10.1002/bem.22487] [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: 06/30/2022] [Revised: 08/20/2023] [Accepted: 09/20/2023] [Indexed: 10/24/2023]
Abstract
Studying the bioeffects of electric fields have been the subject of ongoing research which led to promising therapeutic effect, particularly in cancer treatment. Here, we investigated the impact of low-intensity, intermediate-frequency alternating electric fields on the differentiation of human myeloid leukemia cell line U937. The results showed a near twofold increase in differentiation of U937 cells treated for 24 h by alternating 600 kHz, 150 V/m electric fields, in comparison to their control groups. This measure was evaluated by latex bead phagocytosis assay, nitro blue tetrazolium test, and cell cycle analysis which revealed a significant shift in the number of cells from G2 +M to G0 +G1 phases. The simulation result for the intracellular field intensity showed around 50% attenuation with respect to the applied external field for our setup which ruled out masking of the applied field by the internal electric noise of the cell. Based on previous studies we postulate a possible calcium-related effect for the observed differentiation, yet the exact underlying mechanism requires further investigation. Finally, our results may offer a potential therapeutic method for leukemia in the future.
Collapse
Affiliation(s)
- Rayehe Mamaghaniyeh
- Laboratory of Biophysics and Molecular Biology, Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
| | - Amirali Zandieh
- Laboratory of Biophysics and Molecular Biology, Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
| | - Bahram Goliaei
- Laboratory of Biophysics and Molecular Biology, Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
| | - Maryam S Nezamtaheri
- Laboratory of Biophysics and Molecular Biology, Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
| | - Seyed P Shariatpanahi
- Laboratory of Biophysics and Molecular Biology, Institute of Biochemistry and Biophysics, University of Tehran, Tehran, Iran
| |
Collapse
|
3
|
Wang A, Ma X, Bian J, Jiao Z, Zhu Q, Wang P, Zhao Y. Signalling pathways underlying pulsed electromagnetic fields in bone repair. Front Bioeng Biotechnol 2024; 12:1333566. [PMID: 38328443 PMCID: PMC10847561 DOI: 10.3389/fbioe.2024.1333566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2023] [Accepted: 01/15/2024] [Indexed: 02/09/2024] Open
Abstract
Pulsed electromagnetic field (PEMF) stimulation is a prospective non-invasive and safe physical therapy strategy for accelerating bone repair. PEMFs can activate signalling pathways, modulate ion channels, and regulate the expression of bone-related genes to enhance osteoblast activity and promote the regeneration of neural and vascular tissues, thereby accelerating bone formation during bone repair. Although their mechanisms of action remain unclear, recent studies provide ample evidence of the effects of PEMF on bone repair. In this review, we present the progress of research exploring the effects of PEMF on bone repair and systematically elucidate the mechanisms involved in PEMF-induced bone repair. Additionally, the potential clinical significance of PEMF therapy in fracture healing is underscored. Thus, this review seeks to provide a sufficient theoretical basis for the application of PEMFs in bone repair.
Collapse
Affiliation(s)
- Aoao Wang
- Medical School of Chinese PLA, Beijing, China
| | - Xinbo Ma
- Department of Chemistry, Capital Normal University, Beijing, China
| | - Jiaqi Bian
- Senior Department of Orthopaedics, The Fourth Medical Center of PLA General Hospital, Beijing, China
| | | | - Qiuyi Zhu
- Medical School of Chinese PLA, Beijing, China
| | - Peng Wang
- Department of Neurosurgery, The First Medical Center of Chinese PLA General Hospital, Beijing, China
| | - Yantao Zhao
- Senior Department of Orthopaedics, The Fourth Medical Center of PLA General Hospital, Beijing, China
| |
Collapse
|
4
|
Alvarez-Lorenzo C, Zarur M, Seijo-Rabina A, Blanco-Fernandez B, Rodríguez-Moldes I, Concheiro A. Physical stimuli-emitting scaffolds: The role of piezoelectricity in tissue regeneration. Mater Today Bio 2023; 22:100740. [PMID: 37521523 PMCID: PMC10374602 DOI: 10.1016/j.mtbio.2023.100740] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2023] [Revised: 07/01/2023] [Accepted: 07/19/2023] [Indexed: 08/01/2023] Open
Abstract
The imbalance between life expectancy and quality of life is increasing due to the raising prevalence of chronic diseases. Musculoskeletal disorders and chronic wounds affect a growing percentage of people and demand more efficient tools for regenerative medicine. Scaffolds that can better mimic the natural physical stimuli that tissues receive under healthy conditions and during healing may significantly aid the regeneration process. Shape, mechanical properties, pore size and interconnectivity have already been demonstrated to be relevant scaffold features that can determine cell adhesion and differentiation. Much less attention has been paid to scaffolds that can deliver more dynamic physical stimuli, such as electrical signals. Recent developments in the precise measurement of electrical fields in vivo have revealed their key role in cell movement (galvanotaxis), growth, activation of secondary cascades, and differentiation to different lineages in a variety of tissues, not just neural. Piezoelectric scaffolds can mimic the natural bioelectric potentials and gradients in an autonomous way by generating the electric stimuli themselves when subjected to mechanical loads or, if the patient or the tissue lacks mobility, ultrasound irradiation. This review provides an analysis on endogenous bioelectrical signals, recent developments on piezoelectric scaffolds for bone, cartilage, tendon and nerve regeneration, and their main outcomes in vivo. Wound healing with piezoelectric dressings is addressed in the last section with relevant examples of performance in animal models. Results evidence that a fine adjustment of material composition and processing (electrospinning, corona poling, 3D printing, annealing) provides scaffolds that act as true emitters of electrical stimuli that activate endogenous signaling pathways for more efficient and long-term tissue repair.
Collapse
Affiliation(s)
- Carmen Alvarez-Lorenzo
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, I+D Farma (GI-1645), Facultad de Farmacia, Instituto de Materiales (iMATUS) and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Mariana Zarur
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, I+D Farma (GI-1645), Facultad de Farmacia, Instituto de Materiales (iMATUS) and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Alejandro Seijo-Rabina
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, I+D Farma (GI-1645), Facultad de Farmacia, Instituto de Materiales (iMATUS) and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Barbara Blanco-Fernandez
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, I+D Farma (GI-1645), Facultad de Farmacia, Instituto de Materiales (iMATUS) and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Isabel Rodríguez-Moldes
- Grupo NEURODEVO, Departamento de Bioloxía Funcional, Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Angel Concheiro
- Departamento de Farmacología, Farmacia y Tecnología Farmacéutica, I+D Farma (GI-1645), Facultad de Farmacia, Instituto de Materiales (iMATUS) and Health Research Institute of Santiago de Compostela (IDIS), Universidade de Santiago de Compostela, 15782, Santiago de Compostela, Spain
| |
Collapse
|
5
|
Fontani V, Cruciani S, Santaniello S, Rinaldi S, Maioli M. Impact of REAC Regenerative Endogenous Bioelectrical Cell Reprogramming on MCF7 Breast Cancer Cells. J Pers Med 2023; 13:1019. [PMID: 37374009 DOI: 10.3390/jpm13061019] [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: 05/11/2023] [Revised: 06/07/2023] [Accepted: 06/19/2023] [Indexed: 06/29/2023] Open
Abstract
Human breast adenocarcinoma is a form of cancer which has the tendency to metastasize to other tissues, including bones, lungs, brain, and liver. Several chemotherapeutic drugs are used to treat breast tumors. Their combination is used to simultaneously target different mechanisms involved in cell replication. Radio electric asymmetric conveyer (REAC) technology is an innovative technology, used both in vitro and in vivo, to induce cell reprogramming and counteract senescence processes. Within this context, we treated MCF-7 cells with a regenerative (RGN) REAC treatment for a period ranging between 3 and 7 days. We then analyzed cell viability by trypan blue assays and gene and protein expression by real time-qPCR and confocal microscope, respectively. We also detected the levels of the main proteins involved in tumor progression, DKK1 and SFRP1, by ELISA and cell senescence by β-galactosidase tests. Our results showed the ability of REAC RGN to counteract MCF-7 proliferation, probably inducing autophagy via the upregulation of Beclin-1 and LC3-I, and the modulation of specific tumorigenic biomarkers, such as DKK1 and SPFR1. Our results could suggest the application of the REAC RGN in future in vivo experiments, as an aid for the therapeutic strategies usually applied for breast cancer treatment.
Collapse
Affiliation(s)
- Vania Fontani
- Department of Regenerative Medicine, Rinaldi Fontani Institute, 50144 Florence, Italy
- Department of Adaptive Neuro Psycho Physio Pathology and Neuro Psycho Physical Optimization, Rinaldi Fontani Institute, 50144 Florence, Italy
- Research Department, Rinaldi Fontani Foundation, 50144 Florence, Italy
| | - Sara Cruciani
- Research Department, Rinaldi Fontani Foundation, 50144 Florence, Italy
- Department of Biomedical Sciences, University of Sassari, 07100 Sassari, Italy
| | - Sara Santaniello
- Research Department, Rinaldi Fontani Foundation, 50144 Florence, Italy
| | - Salvatore Rinaldi
- Department of Regenerative Medicine, Rinaldi Fontani Institute, 50144 Florence, Italy
- Department of Adaptive Neuro Psycho Physio Pathology and Neuro Psycho Physical Optimization, Rinaldi Fontani Institute, 50144 Florence, Italy
- Research Department, Rinaldi Fontani Foundation, 50144 Florence, Italy
| | - Margherita Maioli
- Research Department, Rinaldi Fontani Foundation, 50144 Florence, Italy
- Department of Biomedical Sciences, University of Sassari, 07100 Sassari, Italy
| |
Collapse
|
6
|
Pio-Lopez L, Levin M. Morphoceuticals: perspectives for discovery of drugs targeting anatomical control mechanisms in regenerative medicine, cancer and aging. Drug Discov Today 2023; 28:103585. [PMID: 37059328 DOI: 10.1016/j.drudis.2023.103585] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 03/18/2023] [Accepted: 04/06/2023] [Indexed: 04/16/2023]
Abstract
Morphoceuticals are a new class of interventions that target the setpoints of anatomical homeostasis for efficient, modular control of growth and form. Here, we focus on a subclass: electroceuticals, which specifically target the cellular bioelectrical interface. Cellular collectives in all tissues form bioelectrical networks via ion channels and gap junctions that process morphogenetic information, controlling gene expression and allowing cell networks to adaptively and dynamically control growth and pattern formation. Recent progress in understanding this physiological control system, including predictive computational models, suggests that targeting bioelectrical interfaces can control embryogenesis and maintain shape against injury, senescence and tumorigenesis. We propose a roadmap for drug discovery focused on manipulating endogenous bioelectric signaling for regenerative medicine, cancer suppression and antiaging therapeutics. Teaser: By taking advantage of the native problem-solving competencies of cells and tissues, a new kind of top-down approach to biomedicine becomes possible. Bioelectricity offers an especially tractable interface for interventions targeting the software of life for regenerative medicine applications.
Collapse
Affiliation(s)
- Léo Pio-Lopez
- Allen Discovery Center, Tufts University, Medford, MA, USA
| | - Michael Levin
- Allen Discovery Center, Tufts University, Medford, MA, USA; Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, 02115, USA.
| |
Collapse
|
7
|
Cerri GC, Santos SHS, Bader M, Santos RAS. Brown adipose tissue transcriptome unveils an important role of the Beta-alanine/alamandine receptor, MrgD, in metabolism. J Nutr Biochem 2023; 114:109268. [PMID: 36641071 DOI: 10.1016/j.jnutbio.2023.109268] [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: 04/08/2022] [Revised: 10/28/2022] [Accepted: 01/05/2023] [Indexed: 01/13/2023]
Abstract
Alamandine is a recently described heptapeptide component of the renin-angiotensin system (RAS), and its effects are mediated by the receptor Mas-related G protein-coupled receptor D (MrgD) RAS represents an important link between obesity and its consequences by directly modulating the thermogenesis and brown adipose tissue (BAT) function. The alamandine/MrgD metabolic effects and signaling remain unexplored. In this context, the main goal of the present study was to assess the metabolic consequences of MrgD genetic ablation in C57BL6/J mice by evaluating brown adipose tissue RNA sequencing. The main results showed that MrgD-KO mice have diminished brown adipose tissue and that a high-glucose diet (HG) decreased both circulating alamandine levels and MrgD expression in BAT from wild-type mice (WT). BAT transcriptome reveals that MrgD-KO HG mice regulated 45 genes, while WT HG mice regulated 1,148 genes. MrgD-KO mice fed a standard diet (ST) compared with WT ST mice regulated 476 genes, of which 445 genes were downregulated. BAT uses the MrgD receptor to display a normal pattern of gene expression and to respond, like WT mice, to an HG diet. In conclusion, the MrgD signaling is important for the metabolic regulation and manutention of BAT functionality.
Collapse
Affiliation(s)
- Gabriela C Cerri
- Laboratory of Hypertension, Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil; National Institute of Science and Technology in Nanobiopharmaceutics (INCT-Nanobiofar), Belo Horizonte, Minas Gerais, Brazil
| | - Sérgio H S Santos
- Institute of Agricultural Sciences, Food Engineering College, Federeal University of Minas Gerais, Montes Claros, Minas Gerais, Brazil
| | - Michael Bader
- Max Delbrück Center for Molecular Medicine, Berlin-Buch, Germany; National Institute of Science and Technology in Nanobiopharmaceutics (INCT-Nanobiofar), Belo Horizonte, Minas Gerais, Brazil
| | - Robson A S Santos
- Laboratory of Hypertension, Department of Physiology and Biophysics, Federal University of Minas Gerais, Belo Horizonte, Minas Gerais, Brazil; National Institute of Science and Technology in Nanobiopharmaceutics (INCT-Nanobiofar), Belo Horizonte, Minas Gerais, Brazil.
| |
Collapse
|
8
|
Liu H, Li Y, Peng T, Xue S. Transmembrane potential, an indicator in situ reporting cellular senescence and stress response in plant tissues. PLANT METHODS 2023; 19:27. [PMID: 36945027 PMCID: PMC10029184 DOI: 10.1186/s13007-023-01006-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 03/10/2023] [Indexed: 06/18/2023]
Abstract
BACKGROUND Plant cells usually sustain a stable membrane potential due to influx and/or efflux of charged ions across plasma membrane. With the growth and development of plants, different tissues and cells undergo systemic or local programmed decline. Whether the membrane potential of plasma membrane could report senescence signal of plant tissues and cells is unclear. RESULTS We applied a maneuverable transmembrane potential (TMP) detection method with patch-clamp setup to examine the senescence signal of leaf tissue cells in situ over the whole life cycle in Arabidopsis thaliana. The data showed that the TMPs of plant tissues and cells were varied at different growth stages, and the change of TMP was higher at the vegetative growth stage than at the reproductive stage of plant growth. The distinct change of TMP was detectable between the normal and the senescent tissues and cells in several plant species. Moreover, diverse abiotic stimuli, such as heat stress, hyperpolarized the TMP in a short time, followed by depolarized membrane potential with the senescence occurring. We further examined the TMP of plant chloroplasts, which also indicates the senescence signal in organelles. CONCLUSIONS This convenient TMP detection method can report the senescence signal of plant tissues and cells, and can also indicate the potential of plant tolerance to environmental stress.
Collapse
Affiliation(s)
- Hai Liu
- College of Life Science and Technology, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, 430070, China
| | - Yufei Li
- College of Life Science and Technology, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, 430070, China
| | - Ting Peng
- College of Agriculture, Guizhou University, Guiyang, 550025, China
| | - Shaowu Xue
- College of Life Science and Technology, Hubei Hongshan Laboratory, Huazhong Agricultural University, Wuhan, 430070, China.
| |
Collapse
|
9
|
Nikolaev DM, Mironov VN, Shtyrov AA, Kvashnin ID, Mereshchenko AS, Vasin AV, Panov MS, Ryazantsev MN. Fluorescence Imaging of Cell Membrane Potential: From Relative Changes to Absolute Values. Int J Mol Sci 2023; 24:ijms24032435. [PMID: 36768759 PMCID: PMC9916766 DOI: 10.3390/ijms24032435] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Revised: 01/20/2023] [Accepted: 01/23/2023] [Indexed: 01/28/2023] Open
Abstract
Membrane potential is a fundamental property of biological cells. Changes in membrane potential characterize a vast number of vital biological processes, such as the activity of neurons and cardiomyocytes, tumorogenesis, cell-cycle progression, etc. A common strategy to record membrane potential changes that occur in the process of interest is to utilize organic dyes or genetically-encoded voltage indicators with voltage-dependent fluorescence. Sensors are introduced into target cells, and alterations of fluorescence intensity are recorded with optical methods. Techniques that allow recording relative changes of membrane potential and do not take into account fluorescence alterations due to factors other than membrane voltage are already widely used in modern biological and biomedical studies. Such techniques have been reviewed previously in many works. However, in order to investigate a number of processes, especially long-term processes, the measured signal must be corrected to exclude the contribution from voltage-independent factors or even absolute values of cell membrane potential have to be evaluated. Techniques that enable such measurements are the subject of this review.
Collapse
Affiliation(s)
- Dmitrii M. Nikolaev
- Institute of Biomedical Systems and Biotechnologies, Peter the Great Saint Petersburg Polytechnic University, 29 Polytechnicheskaya str., 195251 Saint Petersburg, Russia
- Nanotechnology Research and Education Centre RAS, Saint Petersburg Academic University, 8/3 Khlopina str., 194021 Saint Petersburg, Russia
| | - Vladimir N. Mironov
- Nanotechnology Research and Education Centre RAS, Saint Petersburg Academic University, 8/3 Khlopina str., 194021 Saint Petersburg, Russia
| | - Andrey A. Shtyrov
- Institute of Biomedical Systems and Biotechnologies, Peter the Great Saint Petersburg Polytechnic University, 29 Polytechnicheskaya str., 195251 Saint Petersburg, Russia
- Nanotechnology Research and Education Centre RAS, Saint Petersburg Academic University, 8/3 Khlopina str., 194021 Saint Petersburg, Russia
| | - Iaroslav D. Kvashnin
- Nanotechnology Research and Education Centre RAS, Saint Petersburg Academic University, 8/3 Khlopina str., 194021 Saint Petersburg, Russia
| | - Andrey S. Mereshchenko
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetskii pr, 198504 Saint Petersburg, Russia
| | - Andrey V. Vasin
- Institute of Biomedical Systems and Biotechnologies, Peter the Great Saint Petersburg Polytechnic University, 29 Polytechnicheskaya str., 195251 Saint Petersburg, Russia
| | - Maxim S. Panov
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetskii pr, 198504 Saint Petersburg, Russia
- Center for Biophysical Studies, Saint Petersburg State Chemical Pharmaceutical University, 14 Professor Popov str., lit. A, 197022 Saint Petersburg, Russia
| | - Mikhail N. Ryazantsev
- Nanotechnology Research and Education Centre RAS, Saint Petersburg Academic University, 8/3 Khlopina str., 194021 Saint Petersburg, Russia
- Institute of Chemistry, Saint Petersburg State University, 26 Universitetskii pr, 198504 Saint Petersburg, Russia
- Correspondence:
| |
Collapse
|
10
|
Fernandez Cabada T, Ruben M, El Merhie A, Proietti Zaccaria R, Alabastri A, Petrini EM, Barberis A, Salerno M, Crepaldi M, Davis A, Ceseracciu L, Catelani T, Athanassiou A, Pellegrino T, Cingolani R, Papadopoulou EL. Electrostatic polarization fields trigger glioblastoma stem cell differentiation. NANOSCALE HORIZONS 2022; 8:95-107. [PMID: 36426604 PMCID: PMC9765404 DOI: 10.1039/d2nh00453d] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Accepted: 11/17/2022] [Indexed: 06/16/2023]
Abstract
Over the last few years it has been understood that the interface between living cells and the underlying materials can be a powerful tool to manipulate cell functions. In this study, we explore the hypothesis that the electrical cell/material interface can regulate the differentiation of cancer stem-like cells (CSCs). Electrospun polymer fibres, either polyamide 66 or poly(lactic acid), with embedded graphene nanoplatelets (GnPs), have been fabricated as CSC scaffolds, providing both the 3D microenvironment and a suitable electrical environment favorable for CSCs adhesion, growth and differentiation. We have investigated the impact of these scaffolds on the morphological, immunostaining and electrophysiological properties of CSCs extracted from human glioblastoma multiform (GBM) tumor cell line. Our data provide evidence in favor of the ability of GnP-incorporating scaffolds to promote CSC differentiation to the glial phenotype. Numerical simulations support the hypothesis that the electrical interface promotes the hyperpolarization of the cell membrane potential, thus triggering the CSC differentiation. We propose that the electrical cell/material interface can regulate endogenous bioelectrical cues, through the membrane potential manipulation, resulting in the differentiation of CSCs. Material-induced differentiation of stem cells and particularly of CSCs, can open new horizons in tissue engineering and new approaches to cancer treatment, especially GBM.
Collapse
Affiliation(s)
| | - Massimo Ruben
- Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy.
| | - Amira El Merhie
- Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy.
| | | | - Alessandro Alabastri
- Department of Electrical and Computer Engineering, Rice University, 6100 Main Street, Houston, TX, 77005, USA
| | | | - Andrea Barberis
- Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy.
| | - Marco Salerno
- Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy.
| | - Marco Crepaldi
- Istituto Italiano di Tecnologia, via Melen 83, 16152 Genova, Italy
| | - Alexander Davis
- Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy.
| | - Luca Ceseracciu
- Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy.
| | - Tiziano Catelani
- Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy.
| | | | - Teresa Pellegrino
- Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy.
| | - Roberto Cingolani
- Istituto Italiano di Tecnologia, via Morego 30, 16163 Genova, Italy.
| | | |
Collapse
|
11
|
Di Gregorio E, Israel S, Staelens M, Tankel G, Shankar K, Tuszyński JA. The distinguishing electrical properties of cancer cells. Phys Life Rev 2022; 43:139-188. [PMID: 36265200 DOI: 10.1016/j.plrev.2022.09.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 09/30/2022] [Indexed: 11/07/2022]
Abstract
In recent decades, medical research has been primarily focused on the inherited aspect of cancers, despite the reality that only 5-10% of tumours discovered are derived from genetic causes. Cancer is a broad term, and therefore it is inaccurate to address it as a purely genetic disease. Understanding cancer cells' behaviour is the first step in countering them. Behind the scenes, there is a complicated network of environmental factors, DNA errors, metabolic shifts, and electrostatic alterations that build over time and lead to the illness's development. This latter aspect has been analyzed in previous studies, but how the different electrical changes integrate and affect each other is rarely examined. Every cell in the human body possesses electrical properties that are essential for proper behaviour both within and outside of the cell itself. It is not yet clear whether these changes correlate with cell mutation in cancer cells, or only with their subsequent development. Either way, these aspects merit further investigation, especially with regards to their causes and consequences. Trying to block changes at various levels of occurrence or assisting in their prevention could be the key to stopping cells from becoming cancerous. Therefore, a comprehensive understanding of the current knowledge regarding the electrical landscape of cells is much needed. We review four essential electrical characteristics of cells, providing a deep understanding of the electrostatic changes in cancer cells compared to their normal counterparts. In particular, we provide an overview of intracellular and extracellular pH modifications, differences in ionic concentrations in the cytoplasm, transmembrane potential variations, and changes within mitochondria. New therapies targeting or exploiting the electrical properties of cells are developed and tested every year, such as pH-dependent carriers and tumour-treating fields. A brief section regarding the state-of-the-art of these therapies can be found at the end of this review. Finally, we highlight how these alterations integrate and potentially yield indications of cells' malignancy or metastatic index.
Collapse
Affiliation(s)
- Elisabetta Di Gregorio
- Dipartimento di Ingegneria Meccanica e Aerospaziale (DIMEAS), Politecnico di Torino, Corso Duca degli Abruzzi, 24, Torino, 10129, TO, Italy; Autem Therapeutics, 35 South Main Street, Hanover, 03755, NH, USA
| | - Simone Israel
- Dipartimento di Ingegneria Meccanica e Aerospaziale (DIMEAS), Politecnico di Torino, Corso Duca degli Abruzzi, 24, Torino, 10129, TO, Italy; Autem Therapeutics, 35 South Main Street, Hanover, 03755, NH, USA
| | - Michael Staelens
- Department of Physics, University of Alberta, 11335 Saskatchewan Drive NW, Edmonton, T6G 2E1, AB, Canada
| | - Gabriella Tankel
- Department of Mathematics & Statistics, McMaster University, 1280 Main Street West, Hamilton, L8S 4K1, ON, Canada
| | - Karthik Shankar
- Department of Electrical & Computer Engineering, University of Alberta, 9211 116 Street NW, Edmonton, T6G 1H9, AB, Canada
| | - Jack A Tuszyński
- Dipartimento di Ingegneria Meccanica e Aerospaziale (DIMEAS), Politecnico di Torino, Corso Duca degli Abruzzi, 24, Torino, 10129, TO, Italy; Department of Physics, University of Alberta, 11335 Saskatchewan Drive NW, Edmonton, T6G 2E1, AB, Canada; Department of Oncology, University of Alberta, 11560 University Avenue, Edmonton, T6G 1Z2, AB, Canada.
| |
Collapse
|
12
|
Araújo-Vilar D, Fernández-Pombo A, Cobelo-Gómez S, Castro AI, Sánchez-Iglesias S. Lipodystrophy-associated progeroid syndromes. Hormones (Athens) 2022; 21:555-571. [PMID: 35835948 DOI: 10.1007/s42000-022-00386-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/13/2022] [Accepted: 06/29/2022] [Indexed: 01/07/2023]
Abstract
With the exception of HIV-associated lipodystrophy, lipodystrophy syndromes are rare conditions characterized by a lack of adipose tissue, which is not generally recovered. As a consequence, an ectopic deposition of lipids frequently occurs, which usually leads to insulin resistance, atherogenic dyslipidemia, and hepatic steatosis. These disorders include certain accelerated aging syndromes or progeroid syndromes. Even though each of them has unique clinical features, most show common clinical characteristics that affect growth, skin and appendages, adipose tissue, muscle, and bone and, in some of them, life expectancy is reduced. Although the molecular bases of these Mendelian disorders are very diverse and not well known, genomic instability is frequent as a consequence of impairment of nuclear organization, chromatin structure, and DNA repair, as well as epigenetic dysregulation and mitochondrial dysfunction. In this review, the main clinical features of the lipodystrophy-associated progeroid syndromes will be described along with their causes and pathogenic mechanisms, and an attempt will be made to identify which of López-Otín's hallmarks of aging are present.
Collapse
Affiliation(s)
- David Araújo-Vilar
- UETeM-Molecular Pathology Group, Department of Psychiatry, Radiology, Public Health, Nursing and Medicine (Medicine Area), Center for Research in Molecular Medicine and Chronic Diseases (CIMUS)-IDIS, University of Santiago de Compostela, 15782, Santiago de Compostela, Spain.
- Division of Endocrinology and Nutrition, University Clinical Hospital of Santiago de Compostela, 15706, Santiago de Compostela, Spain.
| | - Antía Fernández-Pombo
- UETeM-Molecular Pathology Group, Department of Psychiatry, Radiology, Public Health, Nursing and Medicine (Medicine Area), Center for Research in Molecular Medicine and Chronic Diseases (CIMUS)-IDIS, University of Santiago de Compostela, 15782, Santiago de Compostela, Spain
- Division of Endocrinology and Nutrition, University Clinical Hospital of Santiago de Compostela, 15706, Santiago de Compostela, Spain
| | - Silvia Cobelo-Gómez
- UETeM-Molecular Pathology Group, Department of Psychiatry, Radiology, Public Health, Nursing and Medicine (Medicine Area), Center for Research in Molecular Medicine and Chronic Diseases (CIMUS)-IDIS, University of Santiago de Compostela, 15782, Santiago de Compostela, Spain
| | - Ana I Castro
- Division of Endocrinology and Nutrition, University Clinical Hospital of Santiago de Compostela, 15706, Santiago de Compostela, Spain
- CIBER Fisiopatología de la Obesidad y la Nutrición (CIBERobn), 28029, Madrid, Spain
| | - Sofía Sánchez-Iglesias
- UETeM-Molecular Pathology Group, Department of Psychiatry, Radiology, Public Health, Nursing and Medicine (Medicine Area), Center for Research in Molecular Medicine and Chronic Diseases (CIMUS)-IDIS, University of Santiago de Compostela, 15782, Santiago de Compostela, Spain
| |
Collapse
|
13
|
Bioelectronic medicines: Therapeutic potential and advancements in next-generation cancer therapy. Biochim Biophys Acta Rev Cancer 2022; 1877:188808. [DOI: 10.1016/j.bbcan.2022.188808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 09/07/2022] [Accepted: 09/27/2022] [Indexed: 11/22/2022]
|
14
|
Abdel Aziz I, Maver L, Giannasi C, Niada S, Brini AT, Antognazza MR. Polythiophene-mediated light modulation of membrane potential and calcium signalling in human adipose-derived stem/stromal cells. JOURNAL OF MATERIALS CHEMISTRY. C 2022; 10:9823-9833. [PMID: 36277082 PMCID: PMC9487879 DOI: 10.1039/d2tc01426b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Accepted: 06/05/2022] [Indexed: 06/16/2023]
Abstract
Recent progress in the fields of regenerative medicine and tissue engineering has been strongly fostered both by the investigation of crucial cues, able to trigger the regeneration of damaged tissues, and by the development of ad hoc functional materials, capable of selectively (re-)activating relevant physiological pathways. In parallel to the successful realization of biochemical cues and the optimization of delivery protocols, the use of biophysical stimuli has been emerging as an alternative, highly effective strategy. Techniques based on electrical, magnetic and mechanical stimulation have been reported to efficiently direct differentiation of stem cells and modulate cell physiology at different developmental stages. In this framework, the use of optical stimulation represents a valuable approach, possibly overcoming current limitations of chemical cues, like limited spatial and temporal resolution and poor control over the extracellular environment. Surprisingly, the effects of light on the physiological properties (light toxicity, cell membrane potential, and cell ionic trafficking) of undifferentiated cells, as well as on their differentiation pathways, were investigated to a very limited extent and rarely quantified in a systematic way. In this work, we aim at clarifying the effects of optical excitation on the physiological behaviour of undifferentiated human adipose-derived stem cells (hASC), cultured on top of a light-sensitive conjugated polymer, region-regular poly-3-hexyl-thiophene (P3HT). Interestingly, we observe statistically significant modulation of the cell membrane potential, as well as noticeable effects on intracellular calcium signalling, triggered by P3HT excitation upon green light stimuli. Possible mechanisms involved in the signal transduction pathways are considered and critically discussed. The capability to modulate the physiological response of hASC upon photoexcitation, in a highly controlled and selective manner, provides a promptly available and non invasive diagnostic tool, thus contributing to the understanding of the complex machinery behind stem cells and material interfaces. Moreover, it may open the route to novel techniques to drive the differentiation path with unprecedented versatility and operational easiness.
Collapse
Affiliation(s)
- Ilaria Abdel Aziz
- Center for Nano Science and Technology@PoliMi, Istituto Italiano di Tecnologia, via Giovanni Pascoli 70/3 20133 Milano Italy
- Politecnico di Milano, Dip.to di Fisica, P.zza L. da Vinci 32 20133 Milano Italy
| | - Leonardo Maver
- Center for Nano Science and Technology@PoliMi, Istituto Italiano di Tecnologia, via Giovanni Pascoli 70/3 20133 Milano Italy
- Politecnico di Milano, Dip.to di Fisica, P.zza L. da Vinci 32 20133 Milano Italy
| | - Chiara Giannasi
- University of Milan, Department of Biomedical, Surgical and Dental Sciences, Via Vanvitelli 32 20129 Milano Italy
- IRCCS Istituto Ortopedico Galeazzi, Via Galeazzi 4 20161 Milano Italy
| | - Stefania Niada
- IRCCS Istituto Ortopedico Galeazzi, Via Galeazzi 4 20161 Milano Italy
| | - Anna T Brini
- University of Milan, Department of Biomedical, Surgical and Dental Sciences, Via Vanvitelli 32 20129 Milano Italy
- IRCCS Istituto Ortopedico Galeazzi, Via Galeazzi 4 20161 Milano Italy
| | - Maria Rosa Antognazza
- Center for Nano Science and Technology@PoliMi, Istituto Italiano di Tecnologia, via Giovanni Pascoli 70/3 20133 Milano Italy
| |
Collapse
|
15
|
Carvalho J. A computational model of organism development and carcinogenesis resulting from cells' bioelectric properties and communication. Sci Rep 2022; 12:9206. [PMID: 35654933 PMCID: PMC9163332 DOI: 10.1038/s41598-022-13281-3] [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: 11/15/2021] [Accepted: 05/23/2022] [Indexed: 11/15/2022] Open
Abstract
A sound theory of biological organization is clearly missing for a better interpretation of observational results and faster progress in understanding life complexity. The availability of such a theory represents a fundamental progress in explaining both normal and pathological organism development. The present work introduces a computational implementation of some principles of a theory of organism development, namely that the default state of cells is proliferation and motility, and includes the principle of variation and organization by closure of constraints. In the present model, the bioelectric context of cells and tissue is the field responsible for organization, as it regulates cell proliferation and the level of communication driving the system’s evolution. Starting from a depolarized (proliferative) cell, the organism grows to a certain size, limited by the increasingly polarized state after successive proliferation events. The system reaches homeostasis, with a depolarized core (proliferative cells) surrounded by a rim of polarized cells (non-proliferative in this condition). This state is resilient to cell death (random or due to injure) and to limited depolarization (potentially carcinogenic) events. Carcinogenesis is introduced through a localized event (a spot of depolarized cells) or by random depolarization of cells in the tissue, which returns cells to their initial proliferative state. The normalization of the bioelectric condition can reverse this out-of-equilibrium state to a new homeostatic one. This simplified model of embryogenesis, tissue organization and carcinogenesis, based on non-excitable cells’ bioelectric properties, can be made more realistic with the introduction of other components, like biochemical fields and mechanical interactions, which are fundamental for a more faithful representation of reality. However, even a simple model can give insight for new approaches in complex systems and suggest new experimental tests, focused in its predictions and interpreted under a new paradigm.
Collapse
Affiliation(s)
- Joao Carvalho
- CFisUC, Department of Physics, University of Coimbra, Coimbra, Portugal.
| |
Collapse
|
16
|
Davidian D, Levin M. Inducing Vertebrate Limb Regeneration: A Review of Past Advances and Future Outlook. Cold Spring Harb Perspect Biol 2022; 14:a040782. [PMID: 34400551 PMCID: PMC9121900 DOI: 10.1101/cshperspect.a040782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Limb loss due to traumatic injury or amputation is a major biomedical burden. Many vertebrates exhibit the ability to form and pattern normal limbs during embryogenesis from amorphous clusters of precursor cells, hinting that this process could perhaps be activated later in life to rebuild missing or damaged limbs. Indeed, some animals, such as salamanders, are proficient regenerators of limbs throughout their life span. Thus, research over the last century has sought to stimulate regeneration in species that do not normally regenerate their appendages. Importantly, these efforts are not only a vital aspect of regenerative medicine, but also have fundamental implications for understanding evolution and the cellular control of growth and form throughout the body. Here we review major recent advances in augmenting limb regeneration, summarizing the degree of success that has been achieved to date in frog and mammalian models using genetic, biochemical, and bioelectrical interventions. While the degree of whole limb repair in rodent models has been modest to date, a number of new technologies and approaches comprise an exciting near-term road map for basic and clinical progress in regeneration.
Collapse
Affiliation(s)
- Devon Davidian
- Allen Discovery Center at Tufts University, Medford, Massachusetts 02155, USA
| | - Michael Levin
- Allen Discovery Center at Tufts University, Medford, Massachusetts 02155, USA
- Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, Massachusetts 02115, USA
| |
Collapse
|
17
|
Potier-Cartereau M, Gautier M, Ravalet N, Ducrocq E, Hamard S, LeGuennec JY, Vandier C, Herault O. The Sodium–Calcium Exchanger Controls the Membrane Potential of AFT024: A Mesenchymal Stem Cell Hematopoietic Niche Forming Line. Bioelectricity 2022. [DOI: 10.1089/bioe.2022.0015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
| | - Mathieu Gautier
- LPCM UR 4667, University of Picardie Jules Verne, Amiens, France
| | - Noemie Ravalet
- LNOx EMR 7001/EA 7501, University of Tours, CNRS, Tours, France
| | - Elfi Ducrocq
- LNOx EMR 7001/EA 7501, University of Tours, CNRS, Tours, France
| | - Sophie Hamard
- LNOx EMR 7001/EA 7501, University of Tours, CNRS, Tours, France
| | - Jean-Yves LeGuennec
- UMR 01046–UMR 9214, University of Montpellier, INSERM, CNRS, Montpellier, France
| | | | - Olivier Herault
- LNOx EMR 7001/EA 7501, University of Tours, CNRS, Tours, France
- Department of Biological Hematology, Tours University Hospital, Tours, France
- OPALE Carnot Institute, The Organization for Partnerships in Leukemia, Hôpital Saint-Louis, Paris, France
| |
Collapse
|
18
|
Zhang P, Zuo D, Mou S, Zhong Y, Yuan X, Zeng J. Effect of inward rectifier potassium 2.1 channel on the osteogenic differentiation of human dental follicle cells and its mechanism. HUA XI KOU QIANG YI XUE ZA ZHI = HUAXI KOUQIANG YIXUE ZAZHI = WEST CHINA JOURNAL OF STOMATOLOGY 2022; 40:139-147. [PMID: 38597045 PMCID: PMC9002191 DOI: 10.7518/hxkq.2022.02.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Revised: 01/30/2022] [Indexed: 01/24/2023]
Abstract
OBJECTIVES This study aims to explore the effect of inward rectifier potassium (Kir) 2.1 channel on the osteogenic differentiation of human dental follicle cells (hDFCs) and its mechanism. METHODS hDFCs were isolated and cultured, and their source was verified by flow cytometry. Osteogenic differentiation ability of hDFCs was evaluated by osteogenic induction. Reverse-transcription polymerase chain reaction (RT-PCR) was performed to detect the gene expression of Kir2.1 gene (KCNJ2) in hDFCs. Real-time quantitative PCR (RT-qPCR) was performed to detect the expression of the Kir2.1 gene (KCNJ2) in hDFCs before and after osteogenic induction. Patch clamp technique was conducted to record the membrane potential changes of hDFCs before and after osteogenic induction. Moreover, the effect on the osteogenic differentiation of hDFCs was confirmed by increasing the concentration of extracellular potassium ions (50 mmol·L-1). Kir2.1 channel blockers cesium chloride (CsCl) and C19H20CINO (ML133) were applied to determine the effect of the Kir2.1 potassium channel on the osteogenic differentiation of hDFCs. At the same time, RT-qPCR was used to observe the expression changes of osteogenic differentiation related genes Runx related transcription factor 2 (Runx2) and osteocalcin (OCN) before and after the two intervention measures. Calcium imaging was performed to observe the effect of membrane potential hyperpolarization caused by decreased extracellular potassium level (2 mmol·L-1) on intracellular calcium concentration. RESULTS RT-PCR results showed that hDFCs expressed the Kir2.1 channel gene (KCNJ2). The RT-qPCR results showed that the KCNJ2 gene expression in hDFCs was upregulated 7 days after osteogenic induction. The patch clamp results showed that the membrane potential of hDFCs hyperpolarized to (-47±5.2) mV from (-12±3.2) mV. Alizarin red and alkaline phosphatase staining results showed that increasing the concentration of the extracellular potassium or blocking the function of the Kir2.1 channel significantly inhibited the osteogenic mineralization ability of hDFCs. The membrane potential hyperpolarization increased the intracellular calcium concentration in hDFCs. CONCLUSIONS Membrane potential hyperpolarization mediated by the Kir2.1 channel plays an important role in the osteogenic differentiation of hDFCs.
Collapse
Affiliation(s)
- Peng Zhang
- Dept. of Orthodontics, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou 646000, China
- Oral and Facial Reconstruction and Regeneration Laboratory, Southwest Medical University, Luzhou 646000, China
| | - Dongchuan Zuo
- Institute of Cardiovascular Research, Key Laboratory of Medical Electrophysiology of Ministry of Education, Southwest Medical University, Luzhou 646000, China
| | - Siyu Mou
- Oral and Facial Reconstruction and Regeneration Laboratory, Southwest Medical University, Luzhou 646000, China
| | - Yutong Zhong
- Oral and Facial Reconstruction and Regeneration Laboratory, Southwest Medical University, Luzhou 646000, China
| | - Xiaoping Yuan
- Dept. of Orthodontics, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou 646000, China
- Oral and Facial Reconstruction and Regeneration Laboratory, Southwest Medical University, Luzhou 646000, China
| | - Jin Zeng
- Dept. of Orthodontics, The Affiliated Stomatological Hospital of Southwest Medical University, Luzhou 646000, China
- Oral and Facial Reconstruction and Regeneration Laboratory, Southwest Medical University, Luzhou 646000, China
| |
Collapse
|
19
|
Tassinari R, Cavallini C, Olivi E, Facchin F, Taglioli V, Zannini C, Marcuzzi M, Ventura C. Cell Responsiveness to Physical Energies: Paving the Way to Decipher a Morphogenetic Code. Int J Mol Sci 2022; 23:ijms23063157. [PMID: 35328576 PMCID: PMC8949133 DOI: 10.3390/ijms23063157] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 03/10/2022] [Accepted: 03/11/2022] [Indexed: 02/04/2023] Open
Abstract
We discuss emerging views on the complexity of signals controlling the onset of biological shapes and functions, from the nanoarchitectonics arising from supramolecular interactions, to the cellular/multicellular tissue level, and up to the unfolding of complex anatomy. We highlight the fundamental role of physical forces in cellular decisions, stressing the intriguing similarities in early morphogenesis, tissue regeneration, and oncogenic drift. Compelling evidence is presented, showing that biological patterns are strongly embedded in the vibrational nature of the physical energies that permeate the entire universe. We describe biological dynamics as informational processes at which physics and chemistry converge, with nanomechanical motions, and electromagnetic waves, including light, forming an ensemble of vibrations, acting as a sort of control software for molecular patterning. Biomolecular recognition is approached within the establishment of coherent synchronizations among signaling players, whose physical nature can be equated to oscillators tending to the coherent synchronization of their vibrational modes. Cytoskeletal elements are now emerging as senders and receivers of physical signals, "shaping" biological identity from the cellular to the tissue/organ levels. We finally discuss the perspective of exploiting the diffusive features of physical energies to afford in situ stem/somatic cell reprogramming, and tissue regeneration, without stem cell transplantation.
Collapse
Affiliation(s)
- Riccardo Tassinari
- ELDOR LAB, National Laboratory of Molecular Biology and Stem Cell Engineering, National Institute of Biostructures and Biosystems, CNR, Via Gobetti 101, 40129 Bologna, Italy; (R.T.); (C.C.); (E.O.); (V.T.); (C.Z.)
| | - Claudia Cavallini
- ELDOR LAB, National Laboratory of Molecular Biology and Stem Cell Engineering, National Institute of Biostructures and Biosystems, CNR, Via Gobetti 101, 40129 Bologna, Italy; (R.T.); (C.C.); (E.O.); (V.T.); (C.Z.)
| | - Elena Olivi
- ELDOR LAB, National Laboratory of Molecular Biology and Stem Cell Engineering, National Institute of Biostructures and Biosystems, CNR, Via Gobetti 101, 40129 Bologna, Italy; (R.T.); (C.C.); (E.O.); (V.T.); (C.Z.)
| | - Federica Facchin
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), University of Bologna, Via Massarenti 9, 40138 Bologna, Italy;
| | - Valentina Taglioli
- ELDOR LAB, National Laboratory of Molecular Biology and Stem Cell Engineering, National Institute of Biostructures and Biosystems, CNR, Via Gobetti 101, 40129 Bologna, Italy; (R.T.); (C.C.); (E.O.); (V.T.); (C.Z.)
| | - Chiara Zannini
- ELDOR LAB, National Laboratory of Molecular Biology and Stem Cell Engineering, National Institute of Biostructures and Biosystems, CNR, Via Gobetti 101, 40129 Bologna, Italy; (R.T.); (C.C.); (E.O.); (V.T.); (C.Z.)
| | - Martina Marcuzzi
- INBB, Biostructures and Biosystems National Institute, Viale Medaglie d’Oro 305, 00136 Rome, Italy;
| | - Carlo Ventura
- ELDOR LAB, National Laboratory of Molecular Biology and Stem Cell Engineering, National Institute of Biostructures and Biosystems, CNR, Via Gobetti 101, 40129 Bologna, Italy; (R.T.); (C.C.); (E.O.); (V.T.); (C.Z.)
- Correspondence: ; Tel.: +39-347-920-6992
| |
Collapse
|
20
|
Ion Channel Drugs Suppress Cancer Phenotype in NG108-15 and U87 Cells: Toward Novel Electroceuticals for Glioblastoma. Cancers (Basel) 2022; 14:cancers14061499. [PMID: 35326650 PMCID: PMC8946312 DOI: 10.3390/cancers14061499] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Revised: 03/08/2022] [Accepted: 03/09/2022] [Indexed: 01/07/2023] Open
Abstract
Glioblastoma is a lethal brain cancer that commonly recurs after tumor resection and chemotherapy treatment. Depolarized resting membrane potentials and an acidic intertumoral extracellular pH have been associated with a proliferative state and drug resistance, suggesting that forced hyperpolarization and disruption of proton pumps in the plasma membrane could be a successful strategy for targeting glioblastoma overgrowth. We screened 47 compounds and compound combinations, most of which were ion-modulating, at different concentrations in the NG108-15 rodent neuroblastoma/glioma cell line. A subset of these were tested in the U87 human glioblastoma cell line. A FUCCI cell cycle reporter was stably integrated into both cell lines to monitor proliferation and cell cycle response. Immunocytochemistry, electrophysiology, and a panel of physiological dyes reporting voltage, calcium, and pH were used to characterize responses. The most effective treatments on proliferation in U87 cells were combinations of NS1643 and pantoprazole; retigabine and pantoprazole; and pantoprazole or NS1643 with temozolomide. Marker analysis and physiological dye signatures suggest that exposure to bioelectric drugs significantly reduces proliferation, makes the cells senescent, and promotes differentiation. These results, along with the observed low toxicity in human neurons, show the high efficacy of electroceuticals utilizing combinations of repurposed FDA approved drugs.
Collapse
|
21
|
Muneekaew S, Wang MJ, Chen SY. Control of stem cell differentiation by using extrinsic photobiomodulation in conjunction with cell adhesion pattern. Sci Rep 2022; 12:1812. [PMID: 35110659 PMCID: PMC8811059 DOI: 10.1038/s41598-022-05888-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Accepted: 01/20/2022] [Indexed: 02/07/2023] Open
Abstract
The induction and direction of stem cell differentiation into needed cell phenotypes is the central pillar of tissue engineering for repairing damaged tissues or organs. Conventionally, a special recipe of chemical factors is formulated to achieve this purpose for each specific target cell type. In this work, it is demonstrated that the combination of extrinsic photobiomodulation and collagen-covered microislands could be used to induce differentiation of Wharton’s jelly mesenchymal stem cells (WJ-MSCs) with the differentiation direction dictated by the specific island topography without use of chemical factors. Both neurogenic differentiation and adipogenic differentiation could be attained with a rate surpassing that using chemical factors. Application of this method to other cell types is possible by utilizing microislands with a pattern tailored particularly for each specific cell type, rendering it a versatile modality for initiating and guiding stem cell differentiation.
Collapse
Affiliation(s)
- Saitong Muneekaew
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei City, 106, Taiwan
| | - Meng-Jiy Wang
- Department of Chemical Engineering, National Taiwan University of Science and Technology, Taipei City, 106, Taiwan.
| | - Szu-Yuan Chen
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei City, 106, Taiwan. .,Department of Physics, National Central University, Taoyuan City, 320, Taiwan.
| |
Collapse
|
22
|
Membrane polarization in non-neuronal cells as a potential mechanism of metabolic disruption by depolarizing insecticides. Food Chem Toxicol 2022; 160:112804. [PMID: 34990786 DOI: 10.1016/j.fct.2021.112804] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 12/22/2021] [Accepted: 12/31/2021] [Indexed: 01/01/2023]
Abstract
A significant rise in the incidence of obesity and type 2 diabetes has occurred worldwide in the last two decades. Concurrently, a growing body of evidence suggests a connection between exposure to environmental pollutants, particularly insecticides, and the development of obesity and type 2 diabetes. This review summarizes key evidence of (1) the presence of different types of neuronal receptors - target sites for neurotoxic insecticides - in non-neuronal cells, (2) the activation of these receptors in non-neuronal cells by membrane-depolarizing insecticides, and (3) changes in metabolic functions, including lipid and glucose accumulation, associated with changes in membrane potential. Based on these findings, we propose that changes in membrane potential (Vmem) by certain insecticides serve as a novel regulator of lipid and glucose metabolism in non-excitable cells associated with obesity and type 2 diabetes.
Collapse
|
23
|
Nosoudi N, Hart C, McKnight I, Esmaeilpour M, Ghomian T, Zadeh A, Raines R, Ramirez Vick JE. Differentiation of adipose-derived stem cells to chondrocytes using electrospraying. Sci Rep 2021; 11:24301. [PMID: 34934143 PMCID: PMC8692477 DOI: 10.1038/s41598-021-03824-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Accepted: 12/08/2021] [Indexed: 01/02/2023] Open
Abstract
An important challenge in the fabrication of tissue engineered constructs for regenerative medical applications is the development of processes capable of delivering cells and biomaterials to specific locations in a consistent manner. Electrospraying live cells has been introduced in recent years as a cell seeding method, but its effect on phenotype nor genotype has not been explored. A promising candidate for the cellular component of these constructs are human adipose-derived stem cells (hASCs), which are multipotent stem cells that can be differentiated into fat, bone, and cartilage cells. They can be easily and safely obtained from adipose tissue, regardless of the age and sex of the donor. Moreover, these cells can be maintained and expanded in culture for long periods of time without losing their differentiation capacity. In this study, hASCs directly incorporated into a polymer solution were electrosprayed, inducing differentiation into chondrocytes, without the addition of any exogenous factors. Multiple studies have demonstrated the effects of exposing hASCs to biomolecules—such as soluble growth factors, chemokines, and morphogens—to induce chondrogenesis. Transforming growth factors (e.g., TGF-β) and bone morphogenetic proteins are particularly known to play essential roles in the induction of chondrogenesis. Although growth factors have great therapeutic potential for cell-based cartilage regeneration, these growth factor-based therapies have presented several clinical complications, including high dose requirements, low half-life, protein instability, higher costs, and adverse effects in vivo. The present data suggests that electrospraying has great potential as hASCs-based therapy for cartilage regeneration.
Collapse
Affiliation(s)
- Nasim Nosoudi
- Biomedical Engineering Department, College of Engineering and Computer Science, Marshall University, Huntington, WV, USA.
| | - Christoph Hart
- Biomedical Engineering Department, College of Engineering and Computer Science, Marshall University, Huntington, WV, USA
| | - Ian McKnight
- Biomedical Engineering Department, College of Engineering and Computer Science, Marshall University, Huntington, WV, USA
| | - Mehdi Esmaeilpour
- Mechanical Engineering Department, College of Engineering and Computer Science, Marshall University, Huntington, WV, USA
| | - Taher Ghomian
- Computer Sciences and Electrical Engineering Department, College of Engineering and Computer Science, Marshall University, Huntington, WV, USA
| | - Amir Zadeh
- Information Systems Department, College of Business, Wright State University, Dayton, OH, USA
| | - Regan Raines
- Biomedical Engineering Department, College of Engineering and Computer Science, Marshall University, Huntington, WV, USA
| | - Jaime E Ramirez Vick
- Biomedical, Industrial and Human Factors Engineering Department, College of Engineering, Wright State University, Dayton, OH, USA
| |
Collapse
|
24
|
Pitsalidis C, Pappa AM, Boys AJ, Fu Y, Moysidou CM, van Niekerk D, Saez J, Savva A, Iandolo D, Owens RM. Organic Bioelectronics for In Vitro Systems. Chem Rev 2021; 122:4700-4790. [PMID: 34910876 DOI: 10.1021/acs.chemrev.1c00539] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Bioelectronics have made strides in improving clinical diagnostics and precision medicine. The potential of bioelectronics for bidirectional interfacing with biology through continuous, label-free monitoring on one side and precise control of biological activity on the other has extended their application scope to in vitro systems. The advent of microfluidics and the considerable advances in reliability and complexity of in vitro models promise to eventually significantly reduce or replace animal studies, currently the gold standard in drug discovery and toxicology testing. Bioelectronics are anticipated to play a major role in this transition offering a much needed technology to push forward the drug discovery paradigm. Organic electronic materials, notably conjugated polymers, having demonstrated technological maturity in fields such as solar cells and light emitting diodes given their outstanding characteristics and versatility in processing, are the obvious route forward for bioelectronics due to their biomimetic nature, among other merits. This review highlights the advances in conjugated polymers for interfacing with biological tissue in vitro, aiming ultimately to develop next generation in vitro systems. We showcase in vitro interfacing across multiple length scales, involving biological models of varying complexity, from cell components to complex 3D cell cultures. The state of the art, the possibilities, and the challenges of conjugated polymers toward clinical translation of in vitro systems are also discussed throughout.
Collapse
Affiliation(s)
- Charalampos Pitsalidis
- Department of Physics, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi 127788, UAE.,Department of Chemical Engineering and Biotechnology, University of Cambridge Philippa Fawcett Drive, Cambridge CB3 0AS, U.K
| | - Anna-Maria Pappa
- Department of Biomedical Engineering, Khalifa University of Science and Technology, P.O. Box 127788, Abu Dhabi 127788, UAE
| | - Alexander J Boys
- Department of Chemical Engineering and Biotechnology, University of Cambridge Philippa Fawcett Drive, Cambridge CB3 0AS, U.K
| | - Ying Fu
- Department of Chemical Engineering and Biotechnology, University of Cambridge Philippa Fawcett Drive, Cambridge CB3 0AS, U.K.,Department of Pure and Applied Chemistry, Technology and Innovation Centre, University of Strathclyde, Glasgow G1 1RD, U.K
| | - Chrysanthi-Maria Moysidou
- Department of Chemical Engineering and Biotechnology, University of Cambridge Philippa Fawcett Drive, Cambridge CB3 0AS, U.K
| | - Douglas van Niekerk
- Department of Chemical Engineering and Biotechnology, University of Cambridge Philippa Fawcett Drive, Cambridge CB3 0AS, U.K
| | - Janire Saez
- Department of Chemical Engineering and Biotechnology, University of Cambridge Philippa Fawcett Drive, Cambridge CB3 0AS, U.K.,Microfluidics Cluster UPV/EHU, BIOMICs Microfluidics Group, Lascaray Research Center, University of the Basque Country UPV/EHU, Avenida Miguel de Unamuno, 3, 01006 Vitoria-Gasteiz, Spain.,Ikerbasque, Basque Foundation for Science, E-48011 Bilbao, Spain
| | - Achilleas Savva
- Department of Chemical Engineering and Biotechnology, University of Cambridge Philippa Fawcett Drive, Cambridge CB3 0AS, U.K
| | - Donata Iandolo
- INSERM, U1059 Sainbiose, Université Jean Monnet, Mines Saint-Étienne, Université de Lyon, 42023 Saint-Étienne, France
| | - Róisín M Owens
- Department of Chemical Engineering and Biotechnology, University of Cambridge Philippa Fawcett Drive, Cambridge CB3 0AS, U.K
| |
Collapse
|
25
|
Djamgoz MB, Pchelintseva E. Mechanosensitive Ion Channels and Stem Cell Differentiation. Bioelectricity 2021. [DOI: 10.1089/bioe.2021.0037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Affiliation(s)
- Mustafa B.A. Djamgoz
- Department of Life Sciences, Imperial College London, London, United Kingdom
- Biotechnology Research Centre, Cyprus International University, Nicosia, TRNC, Mersin 10, Turkey
| | | |
Collapse
|
26
|
D’Alessandro D, Ricci C, Milazzo M, Strangis G, Forli F, Buda G, Petrini M, Berrettini S, Uddin MJ, Danti S, Parchi P. Piezoelectric Signals in Vascularized Bone Regeneration. Biomolecules 2021; 11:1731. [PMID: 34827729 PMCID: PMC8615512 DOI: 10.3390/biom11111731] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 11/12/2021] [Accepted: 11/15/2021] [Indexed: 02/07/2023] Open
Abstract
The demand for bone substitutes is increasing in Western countries. Bone graft substitutes aim to provide reconstructive surgeons with off-the-shelf alternatives to the natural bone taken from humans or animal species. Under the tissue engineering paradigm, biomaterial scaffolds can be designed by incorporating bone stem cells to decrease the disadvantages of traditional tissue grafts. However, the effective clinical application of tissue-engineered bone is limited by insufficient neovascularization. As bone is a highly vascularized tissue, new strategies to promote both osteogenesis and vasculogenesis within the scaffolds need to be considered for a successful regeneration. It has been demonstrated that bone and blood vases are piezoelectric, namely, electric signals are locally produced upon mechanical stimulation of these tissues. The specific effects of electric charge generation on different cells are not fully understood, but a substantial amount of evidence has suggested their functional and physiological roles. This review summarizes the special contribution of piezoelectricity as a stimulatory signal for bone and vascular tissue regeneration, including osteogenesis, angiogenesis, vascular repair, and tissue engineering, by considering different stem cell sources entailed with osteogenic and angiogenic potential, aimed at collecting the key findings that may enable the development of successful vascularized bone replacements useful in orthopedic and otologic surgery.
Collapse
Affiliation(s)
- Delfo D’Alessandro
- Department of Surgical, Medical, Molecular Pathology and Emergency Medicine, University of Pisa, 56126 Pisa, Italy; (D.D.); (F.F.); (S.B.)
| | - Claudio Ricci
- Department of Translational Research and of New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy; (C.R.); (P.P.)
| | - Mario Milazzo
- The BioRobotics Intitute, Scuola Superiore Sant’Anna, 56024 Pontedera, Italy;
| | - Giovanna Strangis
- Department of Civil and Industrial Engineering, University of Pisa, 56122 Pisa, Italy;
| | - Francesca Forli
- Department of Surgical, Medical, Molecular Pathology and Emergency Medicine, University of Pisa, 56126 Pisa, Italy; (D.D.); (F.F.); (S.B.)
| | - Gabriele Buda
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (G.B.); (M.P.)
| | - Mario Petrini
- Department of Clinical and Experimental Medicine, University of Pisa, 56126 Pisa, Italy; (G.B.); (M.P.)
| | - Stefano Berrettini
- Department of Surgical, Medical, Molecular Pathology and Emergency Medicine, University of Pisa, 56126 Pisa, Italy; (D.D.); (F.F.); (S.B.)
| | - Mohammed Jasim Uddin
- Department of Chemistry, University of Texas Rio Grande Valley, Edinburg, TX 78539, USA;
| | - Serena Danti
- The BioRobotics Intitute, Scuola Superiore Sant’Anna, 56024 Pontedera, Italy;
- Department of Civil and Industrial Engineering, University of Pisa, 56122 Pisa, Italy;
| | - Paolo Parchi
- Department of Translational Research and of New Technologies in Medicine and Surgery, University of Pisa, 56126 Pisa, Italy; (C.R.); (P.P.)
| |
Collapse
|
27
|
Khreesha L, Qaswal AB, Al Omari B, Albliwi MA, Ababneh O, Albanna A, Abunab'ah A, Iswaid M, Alarood S, Guzu H, Alshawabkeh G, Zayed FM, Abuhilaleh MA, Al-Jbour MN, Obeidat S, Suleiman A. Quantum Tunneling-Induced Membrane Depolarization Can Explain the Cellular Effects Mediated by Lithium: Mathematical Modeling and Hypothesis. MEMBRANES 2021; 11:851. [PMID: 34832080 PMCID: PMC8625630 DOI: 10.3390/membranes11110851] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/20/2021] [Accepted: 10/27/2021] [Indexed: 11/16/2022]
Abstract
Lithium imposes several cellular effects allegedly through multiple physiological mechanisms. Membrane depolarization is a potential unifying concept of these mechanisms. Multiple inherent imperfections of classical electrophysiology limit its ability to fully explain the depolarizing effect of lithium ions; these include incapacity to explain the high resting permeability of lithium ions, the degree of depolarization with extracellular lithium concentration, depolarization at low therapeutic concentration, or the differences between the two lithium isotopes Li-6 and Li-7 in terms of depolarization. In this study, we implemented a mathematical model that explains the quantum tunneling of lithium ions through the closed gates of voltage-gated sodium channels as a conclusive approach that decodes the depolarizing action of lithium. Additionally, we compared our model to the classical model available and reported the differences. Our results showed that lithium can achieve high quantum membrane conductance at the resting state, which leads to significant depolarization. The quantum model infers that quantum membrane conductance of lithium ions emerges from quantum tunneling of lithium through the closed gates of sodium channels. It also differentiates between the two lithium isotopes (Li-6 and Li-7) in terms of depolarization compared with the previous classical model. Moreover, our study listed many examples of the cellular effects of lithium and membrane depolarization to show similarity and consistency with model predictions. In conclusion, the study suggests that lithium mediates its multiple cellular effects through membrane depolarization, and this can be comprehensively explained by the quantum tunneling model of lithium ions.
Collapse
Affiliation(s)
- Lubna Khreesha
- School of Medicine, The University of Jordan, Amman 11942, Jordan
| | | | - Baheth Al Omari
- School of Medicine, The University of Jordan, Amman 11942, Jordan
| | | | - Omar Ababneh
- School of Medicine, The University of Jordan, Amman 11942, Jordan
| | - Ahmad Albanna
- School of Medicine, The University of Jordan, Amman 11942, Jordan
| | | | - Mohammad Iswaid
- School of Medicine, The University of Jordan, Amman 11942, Jordan
| | - Salameh Alarood
- School of Medicine, The University of Jordan, Amman 11942, Jordan
| | - Hasan Guzu
- Anesthesia Department, Farah Medical Campus, 18 Mai Zeyadeh Street, Amman 11942, Jordan
| | - Ghadeer Alshawabkeh
- Anesthesia and Pain Management Department, King Hussein Cancer Center, Amman 11942, Jordan
| | | | | | | | - Salameh Obeidat
- Department of Anesthesia, Intensive Care and Pain Management, Harvard Medical School, Beth Israel Deaconess Medical Center, Boston, MA 02215, USA
| | - Aiman Suleiman
- Department of Anesthesia, Intensive Care and Pain Management, Harvard Medical School, Beth Israel Deaconess Medical Center, Boston, MA 02215, USA
| |
Collapse
|
28
|
Tassinari R, Cavallini C, Olivi E, Taglioli V, Zannini C, Ventura C. Unveiling the morphogenetic code: A new path at the intersection of physical energies and chemical signaling. World J Stem Cells 2021; 13:1382-1393. [PMID: 34786150 PMCID: PMC8567452 DOI: 10.4252/wjsc.v13.i10.1382] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 05/16/2021] [Accepted: 09/10/2021] [Indexed: 02/06/2023] Open
Abstract
In this editorial, we discuss the remarkable role of physical energies in the control of cell signaling networks and in the specification of the architectural plan of both somatic and stem cells. In particular, we focus on the biological relevance of bioelectricity in the pattern control that orchestrates both developmental and regenerative pathways. To this end, the narrative starts from the dawn of the first studies on animal electricity, reconsidering the pioneer work of Harold Saxton Burr in the light of the current achievements. We finally discuss the most recent evidence showing that bioelectric signaling is an essential component of the informational processes that control pattern specification during embryogenesis, regeneration, or even malignant transformation. We conclude that there is now mounting evidence for the existence of a Morphogenetic Code, and that deciphering this code may lead to unprecedented opportunities for the development of novel paradigms of cure in regenerative and precision medicine.
Collapse
Affiliation(s)
- Riccardo Tassinari
- National Laboratory of Molecular Biology and Stem Cell Engineering, National Institute of Biostructures and Biosystems – ELDOR LAB, Bologna 40129, Italy
| | - Claudia Cavallini
- National Laboratory of Molecular Biology and Stem Cell Engineering, National Institute of Biostructures and Biosystems – ELDOR LAB, Bologna 40129, Italy
| | - Elena Olivi
- National Laboratory of Molecular Biology and Stem Cell Engineering, National Institute of Biostructures and Biosystems – ELDOR LAB, Bologna 40129, Italy
| | - Valentina Taglioli
- National Laboratory of Molecular Biology and Stem Cell Engineering, National Institute of Biostructures and Biosystems – ELDOR LAB, Bologna 40129, Italy
| | - Chiara Zannini
- National Laboratory of Molecular Biology and Stem Cell Engineering, National Institute of Biostructures and Biosystems – ELDOR LAB, Bologna 40129, Italy
| | - Carlo Ventura
- National Laboratory of Molecular Biology and Stem Cell Engineering, National Institute of Biostructures and Biosystems – ELDOR LAB, Bologna 40129, Italy
| |
Collapse
|
29
|
Role of K + and Ca 2+-Permeable Channels in Osteoblast Functions. Int J Mol Sci 2021; 22:ijms221910459. [PMID: 34638799 PMCID: PMC8509041 DOI: 10.3390/ijms221910459] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 09/23/2021] [Accepted: 09/24/2021] [Indexed: 12/20/2022] Open
Abstract
Bone-forming cells or osteoblasts play an important role in bone modeling and remodeling processes. Osteoblast differentiation or osteoblastogenesis is orchestrated by multiple intracellular signaling pathways (e.g., bone morphogenetic proteins (BMP) and Wnt signaling pathways) and is modulated by the extracellular environment (e.g., parathyroid hormone (PTH), vitamin D, transforming growth factor β (TGF-β), and integrins). The regulation of bone homeostasis depends on the proper differentiation and function of osteoblast lineage cells from osteogenic precursors to osteocytes. Intracellular Ca2+ signaling relies on the control of numerous processes in osteoblast lineage cells, including cell growth, differentiation, migration, and gene expression. In addition, hyperpolarization via the activation of K+ channels indirectly promotes Ca2+ signaling in osteoblast lineage cells. An improved understanding of the fundamental physiological and pathophysiological processes in bone homeostasis requires detailed investigations of osteoblast lineage cells. This review summarizes the current knowledge on the functional impacts of K+ channels and Ca2+-permeable channels, which critically regulate Ca2+ signaling in osteoblast lineage cells to maintain bone homeostasis.
Collapse
|
30
|
Grodstein J, Levin M. Stability and robustness properties of bioelectric networks: A computational approach. BIOPHYSICS REVIEWS 2021; 2:031305. [PMID: 38505634 PMCID: PMC10903393 DOI: 10.1063/5.0062442] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2021] [Accepted: 09/07/2021] [Indexed: 03/21/2024]
Abstract
Morphogenesis during development and regeneration requires cells to communicate and cooperate toward the construction of complex anatomical structures. One important set of mechanisms for coordinating growth and form occurs via developmental bioelectricity-the dynamics of cellular networks driving changes of resting membrane potential which interface with transcriptional and biomechanical downstream cascades. While many molecular details have been elucidated about the instructive processes mediated by ion channel-dependent signaling outside of the nervous system, future advances in regenerative medicine and bioengineering require the understanding of tissue, organ, or whole body-level properties. A key aspect of bioelectric networks is their robustness, which can drive correct, invariant patterning cues despite changing cell number and anatomical configuration of the underlying tissue network. Here, we computationally analyze the minimal models of bioelectric networks and use the example of the regenerating planarian flatworm, to reveal important system-level aspects of bioelectrically derived patterns. These analyses promote an understanding of the robustness of circuits controlling regeneration and suggest design properties that can be exploited for synthetic bioengineering.
Collapse
Affiliation(s)
- Joel Grodstein
- Department of Electrical and Computer Engineering, Tufts University, Medford, Massachusetts 02155, USA
| | | |
Collapse
|
31
|
Electrophysiological engineering of heart-derived cells with calcium-dependent potassium channels improves cell therapy efficacy for cardioprotection. Nat Commun 2021; 12:4963. [PMID: 34400625 PMCID: PMC8368210 DOI: 10.1038/s41467-021-25180-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2019] [Accepted: 07/21/2021] [Indexed: 12/30/2022] Open
Abstract
We have shown that calcium-activated potassium (KCa)-channels regulate fundamental progenitor-cell functions, including proliferation, but their contribution to cell-therapy effectiveness is unknown. Here, we test the participation of KCa-channels in human heart explant-derived cell (EDC) physiology and therapeutic potential. TRAM34-sensitive KCa3.1-channels, encoded by the KCNN4 gene, are exclusively expressed in therapeutically bioactive EDC subfractions and maintain a strongly polarized resting potential; whereas therapeutically inert EDCs lack KCa3.1 channels and exhibit depolarized resting potentials. Somatic gene transfer of KCNN4 results in membrane hyperpolarization and increases intracellular [Ca2+], which boosts cell-proliferation and the production of pro-healing cytokines/nanoparticles. Intramyocardial injection of EDCs after KCNN4-gene overexpression markedly increases the salutary effects of EDCs on cardiac function, viable myocardium and peri-infarct neovascularization in a well-established murine model of ischemic cardiomyopathy. Thus, electrophysiological engineering provides a potentially valuable strategy to improve the therapeutic value of progenitor cells for cardioprotection and possibly other indications. Strategies to improve the function of damaged hearts with progenitor cells have stalled. Here, the authors show that gene transfer of a calcium-dependent potassium channel enhances the functional properties and ability of explant-derived cells to improve heart function after a heart attack.
Collapse
|
32
|
Liu Z, Wan X, Wang ZL, Li L. Electroactive Biomaterials and Systems for Cell Fate Determination and Tissue Regeneration: Design and Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2007429. [PMID: 34117803 DOI: 10.1002/adma.202007429] [Citation(s) in RCA: 104] [Impact Index Per Article: 34.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 12/19/2020] [Indexed: 06/12/2023]
Abstract
During natural tissue regeneration, tissue microenvironment and stem cell niche including cell-cell interaction, soluble factors, and extracellular matrix (ECM) provide a train of biochemical and biophysical cues for modulation of cell behaviors and tissue functions. Design of functional biomaterials to mimic the tissue/cell microenvironment have great potentials for tissue regeneration applications. Recently, electroactive biomaterials have drawn increasing attentions not only as scaffolds for cell adhesion and structural support, but also as modulators to regulate cell/tissue behaviors and function, especially for electrically excitable cells and tissues. More importantly, electrostimulation can further modulate a myriad of biological processes, from cell cycle, migration, proliferation and differentiation to neural conduction, muscle contraction, embryogenesis, and tissue regeneration. In this review, endogenous bioelectricity and piezoelectricity are introduced. Then, design rationale of electroactive biomaterials is discussed for imitating dynamic cell microenvironment, as well as their mediated electrostimulation and the applying pathways. Recent advances in electroactive biomaterials are systematically overviewed for modulation of stem cell fate and tissue regeneration, mainly including nerve regeneration, bone tissue engineering, and cardiac tissue engineering. Finally, the significance for simulating the native tissue microenvironment is emphasized and the open challenges and future perspectives of electroactive biomaterials are concluded.
Collapse
Affiliation(s)
- Zhirong Liu
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 100083, P. R. China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Xingyi Wan
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 100083, P. R. China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Zhong Lin Wang
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 100083, P. R. China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
- School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332-0245, USA
| | - Linlin Li
- Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing, 100083, P. R. China
- School of Nanoscience and Technology, University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| |
Collapse
|
33
|
Balduini A, Fava C, Di Buduo CA, Abbonante V, Meneguzzi A, Soprano PM, Taus F, Castelli M, Giontella A, Dovizio M, Tacconelli S, Patrignani P, Minuz P. Expression and functional characterization of the large-conductance calcium and voltage-activated potassium channel K ca 1.1 in megakaryocytes and platelets. J Thromb Haemost 2021; 19:1558-1571. [PMID: 33590615 DOI: 10.1111/jth.15269] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 02/11/2021] [Accepted: 02/12/2021] [Indexed: 01/08/2023]
Abstract
BACKGROUND Ion channels are transmembrane proteins that play important roles in cell function regulation modulating ionic cell permeability. In megakaryocytes and platelets, regulated ion flows have been demonstrated to modulate platelet production and function. However, a relatively limited characterization of ion channel expression and function is available in the human megakaryocyte-platelet lineage. OBJECTIVE We analyzed the expression and function of the large-conductance calcium and voltage-activated potassium channel Kca 1.1 (also known as Maxi-K, BK, slo1) in human megakaryocytes and platelets. METHODS To investigate the functionality of Kca 1.1, we exploited different agonists (BMS-191011, NS1619, NS11021, epoxyeicosatrienoic acid isoforms) and inhibitors (iberiotoxin, penitrem A) of the channel. RESULTS In megakaryocytes, Kca 1.1 agonists determined a decreased proplatelet formation and altered interaction with the extracellular matrix. Analysis of the actin cytoskeleton demonstrated a significant decrease in megakaryocyte spreading and adhesion to collagen. In platelets, the opening of the channel Kca 1.1 led to a reduced sensitivity to agonists with blunted aggregation in response to ADP, with an inhibitory capacity additive to that of aspirin. The Kca 1.1 agonists, but not the inhibitors, determined a reduction of platelet adhesion and aggregation onto immobilized collagen underflow to an extent similar to that of aspirin and ticagrelor. The opening of the Kca 1.1 resulted in cell hyperpolarization impairing free intracellular calcium in ADP-stimulated platelets and megakaryocytes. CONCLUSIONS The present study reveals new mechanisms in platelet formation and activation, suggesting that targeting Kca 1.1 channels might be of potential pharmacological interest in hemostasis and thrombosis.
Collapse
Affiliation(s)
- Alessandra Balduini
- Department of Molecular Medicine, University of Pavia, Pavia, Italy
- Laboratory of Biochemistry, Biotechnology and Advanced Diagnosis, Istituto di Ricovero e Cura a Carattere Scientifico (I.R.C.C.S.) Policlinico San Matteo Foundation, Pavia, Italy
- Department of Biomedical Engineering, Tufts University, Medford, MA, USA
| | - Cristiano Fava
- Section of Internal Medicine C, Department of Medicine, University of Verona, Verona, Italy
| | - Christian A Di Buduo
- Department of Molecular Medicine, University of Pavia, Pavia, Italy
- Laboratory of Biochemistry, Biotechnology and Advanced Diagnosis, Istituto di Ricovero e Cura a Carattere Scientifico (I.R.C.C.S.) Policlinico San Matteo Foundation, Pavia, Italy
| | - Vittorio Abbonante
- Department of Molecular Medicine, University of Pavia, Pavia, Italy
- Laboratory of Biochemistry, Biotechnology and Advanced Diagnosis, Istituto di Ricovero e Cura a Carattere Scientifico (I.R.C.C.S.) Policlinico San Matteo Foundation, Pavia, Italy
| | - Alessandra Meneguzzi
- Section of Internal Medicine C, Department of Medicine, University of Verona, Verona, Italy
| | - Paolo M Soprano
- Department of Molecular Medicine, University of Pavia, Pavia, Italy
- Laboratory of Biochemistry, Biotechnology and Advanced Diagnosis, Istituto di Ricovero e Cura a Carattere Scientifico (I.R.C.C.S.) Policlinico San Matteo Foundation, Pavia, Italy
| | - Francesco Taus
- Section of Internal Medicine C, Department of Medicine, University of Verona, Verona, Italy
| | - Marco Castelli
- Section of Internal Medicine C, Department of Medicine, University of Verona, Verona, Italy
| | - Alice Giontella
- Section of Internal Medicine C, Department of Medicine, University of Verona, Verona, Italy
| | - Melania Dovizio
- Department of Neuroscience, Imaging and Clinical Sciences and Center for Advanced Studies and Technology (CAST, School of Medicine, "G. d'Annunzio" University, Chieti, Italy
| | - Stefania Tacconelli
- Department of Neuroscience, Imaging and Clinical Sciences and Center for Advanced Studies and Technology (CAST, School of Medicine, "G. d'Annunzio" University, Chieti, Italy
| | - Paola Patrignani
- Department of Neuroscience, Imaging and Clinical Sciences and Center for Advanced Studies and Technology (CAST, School of Medicine, "G. d'Annunzio" University, Chieti, Italy
| | - Pietro Minuz
- Section of Internal Medicine C, Department of Medicine, University of Verona, Verona, Italy
| |
Collapse
|
34
|
Henao JC, Grismaldo A, Barreto A, Rodríguez-Pardo VM, Mejía-Cruz CC, Leal-Garcia E, Pérez-Núñez R, Rojas P, Latorre R, Carvacho I, Torres YP. TRPM8 Channel Promotes the Osteogenic Differentiation in Human Bone Marrow Mesenchymal Stem Cells. Front Cell Dev Biol 2021; 9:592946. [PMID: 33614639 PMCID: PMC7890257 DOI: 10.3389/fcell.2021.592946] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Accepted: 01/05/2021] [Indexed: 11/29/2022] Open
Abstract
Various families of ion channels have been characterized in mesenchymal stem cells (MSCs), including some members of transient receptor potential (TRP) channels family. TRP channels are involved in critical cellular processes as differentiation and cell proliferation. Here, we analyzed the expression of TRPM8 channel in human bone marrow MSCs (hBM-MSCs), and its relation with osteogenic differentiation. Patch-clamp recordings showed that hBM-MSCs expressed outwardly rectifying currents which were increased by exposure to 500 μM menthol and were partially inhibited by 10 μM of BCTC, a TRPM8 channels antagonist. Additionally, we have found the expression of TRPM8 by RT-PCR and western blot. We also explored the TRPM8 localization in hBM-MSCs by immunofluorescence using confocal microscopy. Remarkably, hBM-MSCs treatment with 100 μM of menthol or 10 μM of icilin, TRPM8 agonists, increases osteogenic differentiation. Conversely, 20 μM of BCTC, induced a decrease of osteogenic differentiation. These results suggest that TRPM8 channels are functionally active in hBM-MSCs and have a role in cell differentiation.
Collapse
Affiliation(s)
- Juan C Henao
- Departamento de Nutrición y Bioquímica, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Adriana Grismaldo
- Departamento de Nutrición y Bioquímica, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Alfonso Barreto
- Grupo de Inmunobiología y Biología Celular, Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Viviana M Rodríguez-Pardo
- Grupo de Inmunobiología y Biología Celular, Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Claudia Camila Mejía-Cruz
- Grupo de Inmunobiología y Biología Celular, Departamento de Microbiología, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, Colombia
| | - Efrain Leal-Garcia
- Departamento de Ortopedia y Traumatología, Facultad de Medicina, Pontificia Universidad Javeriana, Bogotá, Colombia
| | | | - Patricio Rojas
- Departamento de Biología, Facultad de Química y Biología, Universidad de Santiago de Chile, Santiago, Chile
| | - Ramón Latorre
- Centro Interdisciplinario de Neurociencia de Valparaíso, Facultad de Ciencias, Universidad de Valparaíso, Valparaíso, Chile
| | - Ingrid Carvacho
- Department of Biology and Chemistry, Faculty of Basic Sciences, Universidad Católica del Maule, Talca, Chile
| | - Yolima P Torres
- Departamento de Nutrición y Bioquímica, Facultad de Ciencias, Pontificia Universidad Javeriana, Bogotá, Colombia
| |
Collapse
|
35
|
Robinson AJ, Jain A, Sherman HG, Hague RJM, Rahman R, Sanjuan‐Alberte P, Rawson FJ. Toward Hijacking Bioelectricity in Cancer to Develop New Bioelectronic Medicine. ADVANCED THERAPEUTICS 2021. [DOI: 10.1002/adtp.202000248] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Andie J. Robinson
- Regenerative Medicine and Cellular Therapies, School of Pharmacy University of Nottingham Nottingham NG7 2RD UK
| | - Akhil Jain
- Regenerative Medicine and Cellular Therapies, School of Pharmacy University of Nottingham Nottingham NG7 2RD UK
| | - Harry G. Sherman
- Regenerative Medicine and Cellular Therapies, School of Pharmacy University of Nottingham Nottingham NG7 2RD UK
| | - Richard J. M. Hague
- Centre for Additive Manufacturing, Faculty of Engineering University of Nottingham Nottingham NG8 1BB UK
| | - Ruman Rahman
- Children's Brain Tumour Research Centre, Biodiscovery Institute, School of Medicine University of Nottingham Nottingham NG7 2RD UK
| | - Paola Sanjuan‐Alberte
- Regenerative Medicine and Cellular Therapies, School of Pharmacy University of Nottingham Nottingham NG7 2RD UK
- Department of Bioengineering and iBB‐Institute for Bioengineering and Biosciences, Instituto Superior Técnico Universidade de Lisboa Lisbon 1049‐001 Portugal
| | - Frankie J. Rawson
- Regenerative Medicine and Cellular Therapies, School of Pharmacy University of Nottingham Nottingham NG7 2RD UK
| |
Collapse
|
36
|
Guette-Marquet S, Roques C, Bergel A. Theoretical analysis of the electrochemical systems used for the application of direct current/voltage stimuli on cell cultures. Bioelectrochemistry 2021; 139:107737. [PMID: 33494030 DOI: 10.1016/j.bioelechem.2020.107737] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 12/22/2020] [Accepted: 12/29/2020] [Indexed: 12/31/2022]
Abstract
Endogenous electric fields drive many essential functions relating to cell proliferation, motion, differentiation and tissue development. They are usually mimicked in vitro by using electrochemical systems to apply direct current or voltage stimuli to cell cultures. The many studies devoted to this topic have given rise to a wide variety of experimental systems, whose results are often difficult to compare. Here, these systems are analysed from an electrochemical standpoint to help harmonize protocols and facilitate optimal understanding of the data produced. The theoretical analysis of single-electrode systems shows the necessity of measuring the Nernst potential of the electrode and of discussing the results on this basis rather than using the value of the potential gradient. The paper then emphasizes the great complexity that can arise when high cell voltage is applied to a single electrode, because of the possible occurrence of anode and cathode sites. An analysis of two-electrode systems leads to the advice to change experimental practices by applying current instead of voltage. It also suggests that the values of electric fields reported so far may have been considerably overestimated in macro-sized devices. It would consequently be wise to revisit this area by testing considerably lower electric field values.
Collapse
Affiliation(s)
- Simon Guette-Marquet
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
| | - Christine Roques
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France
| | - Alain Bergel
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, INPT, UPS, Toulouse, France.
| |
Collapse
|
37
|
Abstract
Embryogenesis, as well as regeneration, is increasingly recognized to be orchestrated by an interplay of transcriptional and bioelectric networks. Spatiotemporal patterns of resting potentials direct the size, shape, and locations of numerous organ primordia during patterning. These bioelectrical properties are established by the function of ion channels and pumps that set voltage potentials of individual cells, and gap junctions (electrical synapses) that enable physiological states to propagate across tissue networks. Functional experiments to probe the roles of bioelectrical states can be carried out by targeting endogenous ion channels during development. Here, we describe protocols, optimized for the highly tractable Xenopus laevis embryo, for molecular genetic targeting of ion channels and connexins based on CRISPR, and monitoring of resting potential states using voltage-sensing fluorescent dye. Similar strategies can be adapted to other model species.
Collapse
Affiliation(s)
- Vasilios Nanos
- Department of Biology, and Allen Discovery Center, Tufts University, Medford, MA, USA
| | - Michael Levin
- Department of Biology, and Allen Discovery Center, Tufts University, Medford, MA, USA.
| |
Collapse
|
38
|
Electrical Stimulation of Adipose-Derived Stem Cells in 3D Nanofibrillar Cellulose Increases Their Osteogenic Potential. Biomolecules 2020; 10:biom10121696. [PMID: 33353222 PMCID: PMC7766661 DOI: 10.3390/biom10121696] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Revised: 12/16/2020] [Accepted: 12/17/2020] [Indexed: 02/06/2023] Open
Abstract
Due to the ageing population, there is a steadily increasing incidence of osteoporosis and osteoporotic fractures. As conventional pharmacological therapy options for osteoporosis are often associated with severe side effects, bone grafts are still considered the clinical gold standard. However, the availability of viable, autologous bone grafts is limited making alternative cell-based strategies a promising therapeutic alternative. Adipose-derived stem cells (ASCs) are a readily available population of mesenchymal stem/stromal cells (MSCs) that can be isolated within minimally invasive surgery. This ease of availability and their ability to undergo osteogenic differentiation makes ASCs promising candidates for cell-based therapies for bone fractures. Recent studies have suggested that both exposure to electrical fields and cultivation in 3D can positively affect osteogenic potential of MSCs. To elucidate the osteoinductive potential of a combination of these biophysical cues on ASCs, cells were embedded within anionic nanofibrillar cellulose (aNFC) hydrogels and exposed to electrical stimulation (ES) for up to 21 days. ES was applied to ASCs in 2D and 3D at a voltage of 0.1 V/cm with a duration of 0.04 ms, and a frequency of 10 Hz for 30 min per day. Exposure of ASCs to ES in 3D resulted in high alkaline phosphatase (ALP) activity and in an increased mineralisation evidenced by Alizarin Red S staining. Moreover, ES in 3D aNFC led to an increased expression of the osteogenic markers osteopontin and osteocalcin and a rearrangement and alignment of the actin cytoskeleton. Taken together, our data suggest that a combination of ES with 3D cell culture can increase the osteogenic potential of ASCs. Thus, exposure of ASCs to these biophysical cues might improve the clinical outcomes of regenerative therapies in treatment of osteoporotic fractures.
Collapse
|
39
|
Dirkx N, Miceli F, Taglialatela M, Weckhuysen S. The Role of Kv7.2 in Neurodevelopment: Insights and Gaps in Our Understanding. Front Physiol 2020; 11:570588. [PMID: 33192566 PMCID: PMC7657400 DOI: 10.3389/fphys.2020.570588] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2020] [Accepted: 09/07/2020] [Indexed: 11/13/2022] Open
Abstract
Kv7.2 subunits encoded by the KCNQ2 gene constitute a critical molecular component of the M-current, a subthreshold voltage-gated potassium current controlling neuronal excitability by dampening repetitive action potential firing. Pathogenic loss-of-function variants in KCNQ2 have been linked to epilepsy since 1998, and there is ample functional evidence showing that dysfunction of the channel indeed results in neuronal hyperexcitability. The recent description of individuals with severe developmental delay with or without seizures due to pathogenic variants in KCNQ2 (KCNQ2-encephalopathy) reveals that Kv7.2 channels also have an important role in neurodevelopment. Kv7.2 channels are expressed already very early in the developing brain when key developmental processes such as proliferation, differentiation, and synaptogenesis play a crucial role in brain morphogenesis and maturation. In this review, we will discuss the available evidence for a role of Kv7.2 channels in these neurodevelopmental processes, focusing in particular on insights derived from KCNQ2-related human phenotypes, from the spatio-temporal expression of Kv7.2 and other Kv7 family member, and from cellular and rodent models, highlighting critical gaps and research strategies to be implemented in the future. Lastly, we propose a model which divides the M-current activity in three different developmental stages, correlating with the cell characteristics during these particular periods in neuronal development, and how this can be linked with KCNQ2-related disorders. Understanding these mechanisms can create opportunities for new targeted therapies for KCNQ2-encephalopathy.
Collapse
Affiliation(s)
- Nina Dirkx
- Applied and Translational Neurogenomics Group, VIB Center for Molecular Neurology, Vlaams Instituut voor Biotechnologie, Antwerp, Belgium
| | - Francesco Miceli
- Section of Pharmacology, Department of Neuroscience, University of Naples Federico II, Naples, Italy
| | - Maurizio Taglialatela
- Section of Pharmacology, Department of Neuroscience, University of Naples Federico II, Naples, Italy
| | - Sarah Weckhuysen
- Applied and Translational Neurogenomics Group, VIB Center for Molecular Neurology, Vlaams Instituut voor Biotechnologie, Antwerp, Belgium.,Department of Translational Neurosciences, Faculty of Medicine and Health Sciences, University of Antwerp, Antwerp, Belgium.,Department of Neurology, Antwerp University Hospital, Antwerp, Belgium
| |
Collapse
|
40
|
Levin M. The Biophysics of Regenerative Repair Suggests New Perspectives on Biological Causation. Bioessays 2020; 42:e1900146. [PMID: 31994772 DOI: 10.1002/bies.201900146] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 12/03/2019] [Indexed: 12/13/2022]
Abstract
Evolution exploits the physics of non-neural bioelectricity to implement anatomical homeostasis: a process in which embryonic patterning, remodeling, and regeneration achieve invariant anatomical outcomes despite external interventions. Linear "developmental pathways" are often inadequate explanations for dynamic large-scale pattern regulation, even when they accurately capture relationships between molecular components. Biophysical and computational aspects of collective cell activity toward a target morphology reveal interesting aspects of causation in biology. This is critical not only for unraveling evolutionary and developmental events, but also for the design of effective strategies for biomedical intervention. Bioelectrical controls of growth and form, including stochastic behavior in such circuits, highlight the need for the formulation of nuanced views of pathways, drivers of system-level outcomes, and modularity, borrowing from concepts in related disciplines such as cybernetics, control theory, computational neuroscience, and information theory. This approach has numerous practical implications for basic research and for applications in regenerative medicine and synthetic bioengineering.
Collapse
Affiliation(s)
- Michael Levin
- Allen Discovery Center at Tufts University, Medford, MA, 02155, USA.,Wyss Institute for Biologically Inspired Engineering, Harvard University, Boston, MA, 02115, USA
| |
Collapse
|
41
|
Kamaldinov T, Hahn MS. Dual Bioelectrical Assessment of Human Mesenchymal Stem Cells Using Plasma and Mitochondrial Membrane Potentiometric Probes. Bioelectricity 2020; 2:238-250. [PMID: 34476356 DOI: 10.1089/bioe.2020.0006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Background: Bioelectrical properties are known to impact stem cell fate, state, and function. However, assays that measure bioelectrical properties are generally limited to the plasma membrane potential. In this study, we propose an assay to simultaneously assess cell plasma membrane and mitochondrial membrane potentials. Materials and Methods: Mesenchymal stem cell (MSC) plasma and mitochondrial membrane potentials were measured using flow cytometry and a combination of tetramethylrhodamine, methyl ester (TMRM), and bis-(1,3-dibutylbarbituric acid)trimethine oxonol (DiBAC) dyes. We investigated the shifts in the bioelectrical phenotype of MSCs due to extended culture in vitro, activation with interferon-gamma (IFN-γ), and aggregate conditions. Results: MSCs subjected to extended culture in vitro acquired plasma and mitochondrial membrane potentials consistent with a hyperpolarized bioelectrical phenotype. Activation with IFN-γ shifted MSCs toward a state associated with increased levels of both DiBAC and TMRM. MSCs in aggregate conditions were associated with a decrease in TMRM levels, indicating mitochondrial depolarization. Conclusions: Our proposed assay described distinct MSC bioelectrical transitions due to extended in vitro culture, exposure to an inflammatory cytokine, and culture under aggregate conditions. Overall, our assay enables a more complete characterization of MSC bioelectrical properties within a single experiment, and its relative simplicity enables researchers to apply it in variety of settings.
Collapse
Affiliation(s)
- Timothy Kamaldinov
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York, USA
| | - Mariah S Hahn
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York, USA
| |
Collapse
|
42
|
Zhang J, He X, Chen X, Wu Y, Dong L, Cheng K, Lin J, Wang H, Weng W. Enhancing osteogenic differentiation of BMSCs on high magnetoelectric response films. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 113:110970. [DOI: 10.1016/j.msec.2020.110970] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/18/2020] [Revised: 02/25/2020] [Accepted: 04/13/2020] [Indexed: 12/19/2022]
|
43
|
Zhang W, Chu G, Wang H, Chen S, Li B, Han F. Effects of Matrix Stiffness on the Differentiation of Multipotent Stem Cells. Curr Stem Cell Res Ther 2020; 15:449-461. [PMID: 32268870 DOI: 10.2174/1574888x15666200408114632] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Revised: 01/13/2020] [Accepted: 01/21/2020] [Indexed: 11/22/2022]
Abstract
Differentiation of stem cells, a crucial step in the process of tissue development, repair and regeneration, can be regulated by a variety of mechanical factors such as the stiffness of extracellular matrix. In this review article, the effects of stiffness on the differentiation of stem cells, including bone marrow-derived stem cells, adipose-derived stem cells and neural stem cells, are briefly summarized. Compared to two-dimensional (2D) surfaces, three-dimensional (3D) hydrogel systems better resemble the native environment in the body. Hence, the studies which explore the effects of stiffness on stem cell differentiation in 3D environments are specifically introduced. Integrin is a well-known transmembrane molecule, which plays an important role in the mechanotransduction process. In this review, several integrin-associated signaling molecules, including caveolin, piezo and Yes-associated protein (YAP), are also introduced. In addition, as stiffness-mediated cell differentiation may be affected by other factors, the combined effects of matrix stiffness and viscoelasticity, surface topography, chemical composition, and external mechanical stimuli on cell differentiation are also summarized.
Collapse
Affiliation(s)
- Weidong Zhang
- Department of Orthopaedic Surgery, Orthopaedic Institute, The First Affiliated Hospital, Medical College, Soochow University, Suzhou, Jiangsu, China
| | - Genglei Chu
- Department of Orthopaedic Surgery, Orthopaedic Institute, The First Affiliated Hospital, Medical College, Soochow University, Suzhou, Jiangsu, China
| | - Huan Wang
- Department of Orthopaedic Surgery, Orthopaedic Institute, The First Affiliated Hospital, Medical College, Soochow University, Suzhou, Jiangsu, China
| | - Song Chen
- Department of Orthopaedic Surgery, Orthopaedic Institute, The First Affiliated Hospital, Medical College, Soochow University, Suzhou, Jiangsu, China
| | - Bin Li
- Department of Orthopaedic Surgery, Orthopaedic Institute, The First Affiliated Hospital, Medical College, Soochow University, Suzhou, Jiangsu, China
| | - Fengxuan Han
- Department of Orthopaedic Surgery, Orthopaedic Institute, The First Affiliated Hospital, Medical College, Soochow University, Suzhou, Jiangsu, China
| |
Collapse
|
44
|
Bhavsar MB, Leppik L, Costa Oliveira KM, Barker JH. Role of Bioelectricity During Cell Proliferation in Different Cell Types. Front Bioeng Biotechnol 2020; 8:603. [PMID: 32714900 PMCID: PMC7343900 DOI: 10.3389/fbioe.2020.00603] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2020] [Accepted: 05/18/2020] [Indexed: 11/26/2022] Open
Abstract
Most living organisms possess varying degrees of regenerative capabilities but how these regenerative processes are controlled is still poorly understood. Naturally occurring bioelectric voltages (like Vmem) are thought to be playing instructive role in tissue regeneration, as well as embryonic development. The different distribution of ions on the either side of the cell membrane results in intra- and extra-cellular voltage differences, known as membrane potential or Vmem. The relationship between Vmem and cell physiology is conserved in a wide range of cell types and suggests that Vmem regulation is a fundamental control mechanism for regeneration related processes e.g., proliferation and differentiation. In the present study we measured Vmem in three different cell types (human osteogenic sarcoma cell line (OSC), rat bone marrow derived mesenchymal stem cells (BM-MSC), and rat dermal fibroblasts) and characterized the relationship between their Vmem and proliferation. In order to find out if Vmem controls proliferation, or visa-versa, we blocked and then unblocked Na+/K+-exchanging ATPase using ouabain and measured the proliferation. Our results demonstrate that Vmem can be pharmacologically manipulated to control proliferation in certain cell types like BM-MSC. Taken together, it is clear that control of bioelectrical properties in non-excitable cells could prove to be potentially a useful tool in regenerative medicine efforts.
Collapse
Affiliation(s)
- Mit Balvantray Bhavsar
- Frankfurt Initiative for Regenerative Medicine, Experimental Orthopedics and Trauma Surgery, J.W. Goethe University, Frankfurt, Germany
| | - Liudmila Leppik
- Frankfurt Initiative for Regenerative Medicine, Experimental Orthopedics and Trauma Surgery, J.W. Goethe University, Frankfurt, Germany
| | - Karla Mychellyne Costa Oliveira
- Frankfurt Initiative for Regenerative Medicine, Experimental Orthopedics and Trauma Surgery, J.W. Goethe University, Frankfurt, Germany
| | - John H Barker
- Frankfurt Initiative for Regenerative Medicine, Experimental Orthopedics and Trauma Surgery, J.W. Goethe University, Frankfurt, Germany
| |
Collapse
|
45
|
The voltage-gated proton channel hHv1 is functionally expressed in human chorion-derived mesenchymal stem cells. Sci Rep 2020; 10:7100. [PMID: 32346069 PMCID: PMC7188850 DOI: 10.1038/s41598-020-63517-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Accepted: 04/01/2020] [Indexed: 01/08/2023] Open
Abstract
The voltage-gated proton channel Hv1 is widely expressed, among others, in immune and cancer cells, it provides an efficient cytosolic H+extrusion mechanism and regulates vital functions such as oxidative burst, migration and proliferation. Here we demonstrate the presence of human Hv1 (hHv1) in the placenta/chorion-derived mesenchymal stem cells (cMSCs) using RT-PCR. The voltage- and pH-dependent gating of the current is similar to that of hHv1 expressed in cell lines and that the current is blocked by 5-chloro-2-guanidinobenzimidazole (ClGBI) and activated by arachidonic acid (AA). Inhibition of hHv1 by ClGBI significantly decreases mineral matrix production of cMSCs induced by conditions mimicking physiological or pathological (inorganic phosphate, Pi) induction of osteogenesis. Wound healing assay and single cell motility analysis show that ClGBI significantly inhibits the migration of cMSCs. Thus, seminal functions of cMSCs are modulated by hHv1 which makes this channel as an attractive target for controlling advantages/disadvantages of MSCs therapy.
Collapse
|
46
|
Yang M, James AD, Suman R, Kasprowicz R, Nelson M, O'Toole PJ, Brackenbury WJ. Voltage-dependent activation of Rac1 by Na v 1.5 channels promotes cell migration. J Cell Physiol 2020; 235:3950-3972. [PMID: 31612502 PMCID: PMC6973152 DOI: 10.1002/jcp.29290] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Accepted: 09/30/2019] [Indexed: 12/17/2022]
Abstract
Ion channels can regulate the plasma membrane potential (Vm ) and cell migration as a result of altered ion flux. However, the mechanism by which Vm regulates motility remains unclear. Here, we show that the Nav 1.5 sodium channel carries persistent inward Na+ current which depolarizes the resting Vm at the timescale of minutes. This Nav 1.5-dependent Vm depolarization increases Rac1 colocalization with phosphatidylserine, to which it is anchored at the leading edge of migrating cells, promoting Rac1 activation. A genetically encoded FRET biosensor of Rac1 activation shows that depolarization-induced Rac1 activation results in acquisition of a motile phenotype. By identifying Nav 1.5-mediated Vm depolarization as a regulator of Rac1 activation, we link ionic and electrical signaling at the plasma membrane to small GTPase-dependent cytoskeletal reorganization and cellular migration. We uncover a novel and unexpected mechanism for Rac1 activation, which fine tunes cell migration in response to ionic and/or electric field changes in the local microenvironment.
Collapse
Affiliation(s)
- Ming Yang
- Department of BiologyUniversity of YorkYorkUK
| | - Andrew D. James
- Department of BiologyUniversity of YorkYorkUK
- York Biomedical Research InstituteUniversity of YorkYorkUK
| | - Rakesh Suman
- Phase Focus Ltd, Electric WorksSheffield Digital CampusSheffieldUK
| | | | - Michaela Nelson
- Department of BiologyUniversity of YorkYorkUK
- York Biomedical Research InstituteUniversity of YorkYorkUK
| | - Peter J. O'Toole
- Bioscience Technology Facility, Department of BiologyUniversity of YorkYorkUK
| | - William J. Brackenbury
- Department of BiologyUniversity of YorkYorkUK
- York Biomedical Research InstituteUniversity of YorkYorkUK
| |
Collapse
|
47
|
Kamaldinov T, Erndt-Marino J, Levin M, Kaplan DL, Hahn MS. Assessment of Enrichment of Human Mesenchymal Stem Cells Based on Plasma and Mitochondrial Membrane Potentials. Bioelectricity 2020; 2:21-32. [PMID: 32292894 DOI: 10.1089/bioe.2019.0024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Background: Human mesenchymal stem cells (hMSCs) are utilized preclinically and clinically as a candidate cell therapy for a wide range of inflammatory and degenerative diseases. Despite promising results in early clinical trials, consistent outcomes with hMSC-based therapies have proven elusive in many of these applications. In this work, we attempt to address this limitation through the design of a stem cell therapy to enrich hMSCs for desired electrical and ionic properties with enhanced stemness and immunomodulatory/regenerative capacity. Materials and Methods: In this study, we sought to develop initial protocols to achieve electrically enriched hMSCs (EE-hMSCs) with distinct electrical states and assess the potential relationship with respect to hMSC state and function. We sorted hMSCs based on fluorescence intensity of tetramethylrhodamine ethyl ester (TMRE) and investigated phenotypic differences between the sorted populations. Results: Subpopulations of EE-hMSCs exhibit differential expression of genes associated with senescence, stemness, immunomodulation, and autophagy. EE-hMSCs with low levels of TMRE, indicative of depolarized membrane potential, have reduced mRNA expression of senescence-associated markers, and increased mRNA expression of autophagy and immunomodulatory markers relative to EE-hMSCs with high levels of TMRE (hyperpolarized). Conclusions : This work suggests that the utilization of EE-hMSCs may provide a novel strategy for cell therapies, enabling live cell enrichment for distinct phenotypes that can be exploited for different therapeutic outcomes.
Collapse
Affiliation(s)
- Timothy Kamaldinov
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York
| | - Josh Erndt-Marino
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York.,Department of Biomedical Engineering, Tufts University, Medford, Massachusetts.,Allen Discovery Center at Tufts University, Department of Biology, Tufts University, Medford, Massachusetts
| | - Michael Levin
- Allen Discovery Center at Tufts University, Department of Biology, Tufts University, Medford, Massachusetts
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, Massachusetts.,Allen Discovery Center at Tufts University, Department of Biology, Tufts University, Medford, Massachusetts
| | - Mariah S Hahn
- Department of Biomedical Engineering, Rensselaer Polytechnic Institute, Troy, New York
| |
Collapse
|
48
|
Abstract
Selective serotonin reuptake inhibitor (SSRI) drugs, targeting serotonin transport, are widely used. A puzzling and biomedically important phenomenon concerns the persistent sexual dysfunction following SSRI use seen in some patients. What could be the mechanism of a persistent physiological state brought on by a transient exposure to serotonin transport blockers? In this study, we briefly review the clinical facts concerning this side effect of serotonin reuptake inhibitors and suggest a possible mechanism. Bioelectric circuits (among neural or non-neural cells) could persistently maintain alterations of bioelectric cell properties (resting potential), resulting in long-term changes in electrophysiology and signaling. We present new data revealing this phenomenon in planarian flatworms, in which brief SSRI exposures induce long-lasting changes in resting potential profile. We also briefly review recent data linking neurotransmitter signaling to developmental bioelectrics. Further study of tissue bioelectric memory could enable the design of ionoceutical interventions to counteract side effects of SSRIs and similar drugs.
Collapse
Affiliation(s)
- David Healy
- Hergest Unit, Department of Psychiatry, Bangor University, Bangor, Wales
| | - Joshua LaPalme
- Allen Discovery Center, Tufts University, Medford, Massachusetts
| | - Michael Levin
- Allen Discovery Center, Tufts University, Medford, Massachusetts
| |
Collapse
|
49
|
Aldebs AI, Zohora FT, Nosoudi N, Singh SP, Ramirez‐Vick JE. Effect of Pulsed Electromagnetic Fields on Human Mesenchymal Stem Cells Using 3D Magnetic Scaffolds. Bioelectromagnetics 2020; 41:175-187. [PMID: 31944364 PMCID: PMC9290550 DOI: 10.1002/bem.22248] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 01/01/2020] [Indexed: 12/14/2022]
Affiliation(s)
- Alyaa I. Aldebs
- Department of Biomedical, Industrial & Human Factors EngineeringWright State UniversityDayton Ohio
| | - Fatema T. Zohora
- Department of Biomedical, Industrial & Human Factors EngineeringWright State UniversityDayton Ohio
| | - Nasim Nosoudi
- Biomedical Engineering ProgramMarshall UniversityHuntington West Virginia
| | | | - Jaime E. Ramirez‐Vick
- Department of Biomedical, Industrial & Human Factors EngineeringWright State UniversityDayton Ohio
| |
Collapse
|
50
|
Bonzanni M, Payne SL, Adelfio M, Kaplan DL, Levin M, Oudin MJ. Defined extracellular ionic solutions to study and manipulate the cellular resting membrane potential. Biol Open 2020; 9:bio048553. [PMID: 31852666 PMCID: PMC6994931 DOI: 10.1242/bio.048553] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Accepted: 12/04/2019] [Indexed: 12/19/2022] Open
Abstract
All cells possess an electric potential across their plasma membranes and can generate and receive bioelectric signals. The cellular resting membrane potential (RMP) can regulate cell proliferation, differentiation and apoptosis. Current approaches to measure the RMP rely on patch clamping, which is technically challenging, low-throughput and not widely available. It is therefore critical to develop simple strategies to measure, manipulate and characterize the RMP. Here, we present a simple methodology to study the RMP of non-excitable cells and characterize the contribution of individual ions to the RMP using a voltage-sensitive dye. We define protocols using extracellular solutions in which permeable ions (Na+, Cl- and K+) are substituted with non-permeable ions [N-Methyl-D-glucamine (NMDG), gluconate, choline, SO42-]. The resulting RMP modifications were assessed with both patch clamp and a voltage sensitive dye. Using an epithelial and cancer cell line, we demonstrate that the proposed ionic solutions can selectively modify the RMP and help determine the relative contribution of ionic species in setting the RMP. The proposed method is simple and reproducible and will make the study of bioelectricity more readily available to the cell biology community.This article has an associated First Person interview with the first author of the paper.
Collapse
Affiliation(s)
- Mattia Bonzanni
- Department of Biomedical Engineering, Tufts University, Medford, 02155 MA, USA
- Allen Discovery Center, Tufts University, Medford, 02155 MA, USA
| | - Samantha L Payne
- Department of Biomedical Engineering, Tufts University, Medford, 02155 MA, USA
| | - Miryam Adelfio
- Department of Biomedical Engineering, Tufts University, Medford, 02155 MA, USA
| | - David L Kaplan
- Department of Biomedical Engineering, Tufts University, Medford, 02155 MA, USA
- Allen Discovery Center, Tufts University, Medford, 02155 MA, USA
| | - Michael Levin
- Allen Discovery Center, Tufts University, Medford, 02155 MA, USA
| | - Madeleine J Oudin
- Department of Biomedical Engineering, Tufts University, Medford, 02155 MA, USA
| |
Collapse
|