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Nunn AV, Guy GW, Bell JD. Bioelectric Fields at the Beginnings of Life. Bioelectricity 2022; 4:237-247. [PMID: 36636557 PMCID: PMC9810354 DOI: 10.1089/bioe.2022.0012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
Abstract
The consensus on the origins of life is that it involved organization of prebiotic chemicals according to the underlying principles of thermodynamics to dissipate energy derived from photochemical and/or geochemical sources. Leading theories tend to be chemistry-centric, revolving around either metabolism or information-containing polymers first. However, experimental data also suggest that bioelectricity and quantum effects play an important role in biology, which might suggest that a further factor is required to explain how life began. Intriguingly, in the early part of 20th century, the concept of the "morphogenetic field" was proposed by Gurwitsch to explain how the shape of an organism was determined, while a role for quantum mechanics in biology was suggested by Bohr and Schrödinger, among others. This raises the question as to the potential of these phenomena, especially bioelectric fields, to have been involved in the origin of life. It points to the possibility that as bioelectricity is universally prevalent in biological systems today, it represents a more complex echo of an electromagnetic skeleton which helped shape life into being. It could be argued that as a flow of ions creates an electric field, this could have been pivotal in the formation of an energy dissipating structure, for instance, in deep sea thermal vents. Moreover, a field theory might also hint at the potential involvement of nontrivial quantum effects in life. Not only might this perspective help indicate the origins of morphogenetic fields, but also perhaps suggest where life may have started, and whether metabolism or information came first. It might also help to provide an insight into aging, cancer, consciousness, and, perhaps, how we might identify life beyond our planet. In short, when thinking about life, not only do we have to consider the accepted chemistry, but also the fields that must also shape it. In effect, to fully understand life, as well as the yin of accepted particle-based chemistry, there is a yang of field-based interaction and an ethereal skeleton.
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Affiliation(s)
- Alistair V.W. Nunn
- Research Centre for Optimal Health, Department of Life Sciences, University of Westminster, London, United Kingdom.,Address correspondence to: Alistair V.W. Nunn, PhD, Research Centre for Optimal Health, Department of Life Sciences, University of Westminster, London W1W 6UW, United Kingdom
| | | | - Jimmy D. Bell
- Research Centre for Optimal Health, Department of Life Sciences, University of Westminster, London, United Kingdom
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2
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Dynamics and Physics of Integrin Activation in Tumor Cells by Nano-Sized Extracellular Ligands and Electromagnetic Fields. Methods Mol Biol 2021; 2217:197-233. [PMID: 33215383 DOI: 10.1007/978-1-0716-0962-0_12] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Integrins are stress-sensing proteins expressed on the surface of cells. They regulate bidirectional signal transduction during cell-cell or cell-extracellular matrix (ECM) contacts. Integrins link the ECM with the cytoplasm through interaction with their ligands. Biophysically, such interactions can be understood as changes in stress fields at specific integrin stress-sensing domains, such as the MIDAS and ADMIDAS domains. Stress changes between ligands and cytoskeletal structures are involved in cancer cell growth by altering signal transduction pathways dependent on integrin activation. In this chapter, previous results regarding integrin activation and tumor cell growth using nanoparticles (NPs) of different materials, sizes and shapes are placed within a framework of polarized NPs in the ECM by external electromagnetic fields, in which the synergic action between polarized NPs and electromagnetic fields activates the integrins. Small size NPs activate integrins via the polar component of the dipole force between NPs and integrin sensing stress sites, while large size NPs exercise a similar action via the radial component. A quantum electrodynamic model also accounts for ECM overstressing by electromagnetic mode trapping between coherent symmetric and antisymmetric quantum states.
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Huang X, Yang X, Sun C, Huang S, Cheng M, Han Y. Biophysical signal transduction in cancer cells: Understanding its role in cancer pathogenesis and treatment. Biochim Biophys Acta Rev Cancer 2020; 1874:188402. [PMID: 32771535 DOI: 10.1016/j.bbcan.2020.188402] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 07/21/2020] [Accepted: 07/21/2020] [Indexed: 12/12/2022]
Abstract
Signaling between cells can promote both the development and progression of cancer. It has been found that chemical and physical signals, together with extracellular factors, can influence cancer progression. In this review, we focus on the physical microenvironment of cancer cells and examine the action of mechanical, electromagnetic, thermal, and acoustic signals on cancer cells, which may provide new directions for cancer research and treatment.
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Affiliation(s)
- XiaoLei Huang
- School of Life Science and Technology, Weifang Medical University, Weifang, Shandong 261053, PR China
| | - XiaoXu Yang
- School of Life Science and Technology, Weifang Medical University, Weifang, Shandong 261053, PR China
| | - Chenchen Sun
- School of Life Science and Technology, Weifang Medical University, Weifang, Shandong 261053, PR China
| | - ShuXia Huang
- Department of Psychology, Weifang Medical University, Weifang, Shandong 261053, PR China
| | - Min Cheng
- Department of Physiology, Weifang Medical University, Weifang, Shandong 261053, PR China
| | - Yangyang Han
- School of Life Science and Technology, Weifang Medical University, Weifang, Shandong 261053, PR China.
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Elton DC, Spencer PD, Riches JD, Williams ED. Exclusion Zone Phenomena in Water-A Critical Review of Experimental Findings and Theories. Int J Mol Sci 2020; 21:E5041. [PMID: 32708867 PMCID: PMC7404113 DOI: 10.3390/ijms21145041] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2020] [Revised: 06/27/2020] [Accepted: 07/13/2020] [Indexed: 12/29/2022] Open
Abstract
The existence of the exclusion zone (EZ), a layer of water in which plastic microspheres are repelled from hydrophilic surfaces, has now been independently demonstrated by several groups. A better understanding of the mechanisms which generate EZs would help with understanding the possible importance of EZs in biology and in engineering applications such as filtration and microfluidics. Here we review the experimental evidence for EZ phenomena in water and the major theories that have been proposed. We review experimental results from birefringence, neutron radiography, nuclear magnetic resonance, and other studies. Pollack theorizes that water in the EZ exists has a different structure than bulk water, and that this accounts for the EZ. We present several alternative explanations for EZs and argue that Schurr's theory based on diffusiophoresis presents a compelling alternative explanation for the core EZ phenomenon. Among other things, Schurr's theory makes predictions about the growth of the EZ with time which have been confirmed by Florea et al. and others. We also touch on several possible confounding factors that make experimentation on EZs difficult, such as charged surface groups, dissolved solutes, and adsorbed nanobubbles.
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Affiliation(s)
- Daniel C Elton
- Radiology and Imaging Sciences, National Institutes of Health Clinical Center, Bethesda, MD 20892, USA
| | - Peter D Spencer
- School of Biomedical Sciences, Faculty of Health, Institute of Health and Biomedical Innovation, Queensland University of Technology (QUT), Brisbane, QLD 4059, Australia
| | - James D Riches
- School of Earth, Environmental and Biological Sciences, Science and Engineering Faculty, Institute for Future Environments, QUT, Brisbane, QLD 4000, Australia
| | - Elizabeth D Williams
- School of Biomedical Sciences, Faculty of Health, Institute of Health and Biomedical Innovation, QUT, Australian Prostate Cancer Research Centre-Queensland, Translational Research Institute, Brisbane, QLD 4059, Australia
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5
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Rigotti M, Cerbaro AF, da Silva IDR, Agostini F, Branco CS, Moura S, Salvador M. Grape seed proanthocyanidins prevent H 2 O 2 -induced mitochondrial dysfunction and apoptosis via SIRT 1 activation in embryonic kidney cells. J Food Biochem 2020; 44:e13147. [PMID: 31943241 DOI: 10.1111/jfbc.13147] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2019] [Revised: 12/20/2019] [Accepted: 12/27/2019] [Indexed: 12/31/2022]
Abstract
Grape proanthocyanidins are compounds widely ingested in the diet. This study evaluated their effects on mitochondrial function, apoptosis, and sirtuin 1 and 3 expressions in HEK-293 cells exposed to H2 O2 . High-resolution mass spectrometry and high-performance liquid chromatography characterized the proanthocyanidins extract and the presence of procyanidins B and C was detected. The extract prevented H2 O2 -induced oxidative damage to proteins and lipids and depletion in superoxide dismutase activity. Moreover, it was able to regulate the expression of NADH: Ubiquinone oxidoreductase core subunit S7 and prevent mitochondrial electron transport chain dysfunction, ATP depletion, and apoptosis induced by H2 O2 . Finally, the extract was able to regulate sirtuin 1 and 3 expressions, thus maintaining cell viability. These data show that the grape seed proanthocyanidins can target mitochondrial proteins, which may represent an important approach for the management of numerous chronic illnesses associated with mitochondrial dysfunction. PRACTICAL APPLICATIONS: Proanthocyanidins are phenolic compounds abundant in regular diet, commonly found in grapes and derivatives, pomegranates, apples, and red fruits, all foods known for their beneficial effects on health. The current study highlights the role of proanthocyanidins as mitochondrial modulators that may explain the biological activity attributed to these compounds. This study brings evidence that proanthocyanidins might be considered as a value-added agent for the development of new nutraceutical and or pharmaceutical approaches.
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Affiliation(s)
- Marina Rigotti
- Laboratório de Estresse Oxidativo e Antioxidantes, Instituto de Biotecnologia, Universidade de Caxias do Sul, Caxias do Sul, Brazil
| | - Aline Fagundes Cerbaro
- Laboratório de Estresse Oxidativo e Antioxidantes, Instituto de Biotecnologia, Universidade de Caxias do Sul, Caxias do Sul, Brazil
| | - Iohana Dos Reis da Silva
- Laboratório de Estresse Oxidativo e Antioxidantes, Instituto de Biotecnologia, Universidade de Caxias do Sul, Caxias do Sul, Brazil
| | - Fabiana Agostini
- Laboratório de Biotecnologia de Produtos Naturais e Sintéticos, Instituto de Biotecnologia, Universidade de Caxias do Sul, Caxias do Sul, Brazil
| | - Catia Santos Branco
- Laboratório de Estresse Oxidativo e Antioxidantes, Instituto de Biotecnologia, Universidade de Caxias do Sul, Caxias do Sul, Brazil
| | - Sidnei Moura
- Laboratório de Biotecnologia de Produtos Naturais e Sintéticos, Instituto de Biotecnologia, Universidade de Caxias do Sul, Caxias do Sul, Brazil
| | - Mirian Salvador
- Laboratório de Estresse Oxidativo e Antioxidantes, Instituto de Biotecnologia, Universidade de Caxias do Sul, Caxias do Sul, Brazil
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Bordoni B, Marelli F, Morabito B, Sacconi B. Emission of Biophotons and Adjustable Sounds by the Fascial System: Review and Reflections for Manual Therapy. J Evid Based Integr Med 2019; 23:2515690X17750750. [PMID: 29405763 PMCID: PMC5871034 DOI: 10.1177/2515690x17750750] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Every body structure is wrapped in connective tissue or fascia, creating a structural continuity that gives form and function to every tissue and organ. The fascial tissue is uniformly distributed throughout the body, enveloping, interacting with and permeating blood vessels, nerves, viscera, meninges, bones and muscles, creating various layers at different depths and forming a tridimensional metabolic and mechanical matrix. This article reviews the literature on the emission of biophotons and adjustable sounds by the fascial system, because these biological changes could be a means of local and systemic cellular communication and become another assessment tool for manual (therapy) practitioners. This is the first article that discusses these topics in a single text, attempting to bring such information into an area of application that is beneficial to osteopaths, chiropractors, and manual therapists.
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Affiliation(s)
| | - Fabiola Marelli
- 2 CRESO, School of Osteopathic Centre for Research and Studies, Gorla Minore (VA), Italy.,3 CRESO, School of Osteopathic Centre for Research and Studies, Fano (Pesaro Urbino), Italy
| | - Bruno Morabito
- 2 CRESO, School of Osteopathic Centre for Research and Studies, Gorla Minore (VA), Italy.,3 CRESO, School of Osteopathic Centre for Research and Studies, Fano (Pesaro Urbino), Italy.,4 Foundation Polyclinic University A. Gemelli University Cattolica del Sacro Cuore, Rome, Italy
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Mazzocca A, Ferraro G, Misciagna G, Fais S. Moving the systemic evolutionary approach to cancer forward: Therapeutic implications. Med Hypotheses 2018; 121:80-87. [PMID: 30396500 DOI: 10.1016/j.mehy.2018.09.033] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Revised: 08/26/2018] [Accepted: 09/18/2018] [Indexed: 12/31/2022]
Abstract
We have previously presented a new Systemic Evolutionary Theory of Cancer (SETOC) based on the failure of proper endosymbiosis in eukaryotic cells. Here, we propose that the progressive uncoupling of two endosymbiotic subsystems (information and energy) inside the cell, as a consequence of long-term injuries, gives rise to alterations (i) in tissue interactions and (ii) in cell organization. In the first case, we argue that the impairment of both the coherent state and the synergy between intercellular communications underpins the onset of tissue dysplasia, that usually evolves towards cancer development. In the second case, we suggest that the rupture of endosymbiosis drives a sort of cell regression towards a protist-like entity represented by the concept of "de-emergence" postulated in our systemic evolutionary approach to carcinogenesis. This conceptual association of the cancer cell with a protist-like organism could support the development of novel cancer therapeutic approaches. To this end, we propose a paradigm shift in cancer pharmacology since: i) our knowledge of cancer pathophysiology as a complex system is insufficient, despite a vast knowledge of molecular mechanisms underlying cancer; ii) current cancer pharmacology deals only with microvariables (e.g. gene or protein targets), which do not account for the integrated pathophysiology of cancer, rather than with macrovariables (e.g. pH, membrane potential, electromagnetic fields, cell communications and so on) and mesovariables (between micro and macro), such as the interaction between various cellular components including cellular organelles. This paradigm shift should allow cancer pharmacology to move forward from molecular treatments (focusing on single targets) to modular treatments that consider cancer-related processes (i.e. inflammation, coagulation, etc.) or even to a sort of ecosystemic treatment addressing the whole functioning of the "cancer ecosystem". Examples of ecosystems treatment may be natural plant derivatives that act synergistically or pulsed electromagnetic fields which can act on particular biological processes in cancer cells. In addition, we need different working theoretical models on which to base new anticancer pharmacological approaches. Finally, we examine what value our systemic evolutionary approach could add to cancer treatments, in particular in liver cancer as a paradigm for developing potential applications.
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Affiliation(s)
- Antonio Mazzocca
- Interdisciplinary Department of Medicine, University of Bari School of Medicine, Piazza G. Cesare, 11, 70124 Bari, Italy.
| | - Giovanni Ferraro
- Interuniversity Department of Physics, Polytechnic of Bari, Via Orabona, 4, 70126 Bari, Italy
| | - Giovanni Misciagna
- Scientific and Ethical Committee, University Hospital Policlinico, Piazza G. Cesare, 11, 70124 Bari, Italy
| | - Stefano Fais
- Department of Oncology and Molecular Medicine (OMM), National Institute of Health, Viale Regina Elena, 299, 00161 Rome, Italy
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Meijer DKF, Geesink HJH. Favourable and Unfavourable EMF Frequency Patterns in Cancer: Perspectives for Improved Therapy and Prevention. ACTA ACUST UNITED AC 2018. [DOI: 10.4236/jct.2018.93019] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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9
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Pokorný J, Pokorný J, Borodavka F. Warburg effect-damping of electromagnetic oscillations. Electromagn Biol Med 2017; 36:270-278. [PMID: 28574758 DOI: 10.1080/15368378.2017.1326933] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Mitochondrial dysfunction is a central defect in cells creating the Warburg and reverse Warburg effect cancers. However, the link between mitochondrial dysfunction and cancer has not yet been clearly explained. Decrease of mitochondrial oxidative energy production to about 50 % in comparison with healthy cells may be caused by inhibition of pyruvate transfer into mitochondrial matrix and/or disturbed H+ ion transfer across inner mitochondrial membrane into cytosol. Lowering of the inner membrane potential and shifting of the working point of mitochondria to high values of pH above an intermediate point causes reorganization of the ordered water layer at the mitochondrial membrane. The reorganized ordered water layers at high pH values release electrons which are transferred to the cytosol rim of the layer. The electrons damp electromagnetic activity of Warburg effect cancer cells or fibroblasts associated with reverse Warburg effect cancer cells leading to lowered electromagnetic activity, disturbed coherence, increased frequency of oscillations and decreased level of biological functions. In reverse Warburg effect cancers, associated fibroblasts supply energy-rich metabolites to the cancer cell resulting in increased power of electromagnetic field, fluctuations due to shift of oscillations to an unstable nonlinear region, decreased frequency and loss of coherence.
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Affiliation(s)
- Jiří Pokorný
- a Institute of Physics, Czech Academy of Sciences , Prague , Czech Republic
| | - Jan Pokorný
- a Institute of Physics, Czech Academy of Sciences , Prague , Czech Republic
| | - Fedir Borodavka
- a Institute of Physics, Czech Academy of Sciences , Prague , Czech Republic
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Narinyan L, Ayrapetyan S. Cyclic AMP-dependent signaling system is a primary metabolic target for non-thermal effect of microwaves on heart muscle hydration. Electromagn Biol Med 2016; 36:182-191. [PMID: 28085517 DOI: 10.1080/15368378.2016.1241803] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Previously, we have suggested that cell hydration is a universal and extra-sensitive sensor for the structural changes of cell aqua medium caused by the impact of weak chemical and physical factors. The aim of present work is to elucidate the nature of the metabolic messenger through which physiological solution (PS) treated by non-thermal (NT) microwaves (MW) could modulate heart muscle hydration of rats. For this purpose, the effects of NT MW-treated PS on heart muscle hydration, [3H]-ouabain binding with cell membrane, 45Ca2+ uptake and intracellular cyclic nucleotides contents in vivo and in vitro experiments were studied. It is shown that intraperitoneal injections of both Sham-treated PS and NT MW-treated PS elevate heart muscle hydration. However, the effect of NT MW-treated PS on muscle hydration is more pronounced than the effect of Sham-treated PS. In vitro experiments NT MW-treated PS has dehydration effect on muscle, which is not changed by decreasing Na+ gradients on membrane. Intraperitoneal injection of Sham- and NT MW-treated PS containing 45Ca2+ have similar dehydration effect on muscle, while NT MW-treated PS has activation effect on Na+/Ca2+ exchange in reverse mode. The intraperitoneal injection of NT MW-treated PS depresses [3H]-ouabain binding with its high-affinity membrane receptors, elevates intracellular cAMP and decreases cGMP contents. Based on the obtained data, it is suggested that cAMP-dependent signaling system serves as a primary metabolic target for NT MW effect on heart muscle hydration.
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Affiliation(s)
- Lilia Narinyan
- a UNESCO Chair - Life Sciences International Postgraduate Educational Center , Yerevan , Armenia
| | - Sinerik Ayrapetyan
- a UNESCO Chair - Life Sciences International Postgraduate Educational Center , Yerevan , Armenia
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Pokorný J, Pokorný J, Jandová A, Kobilková J, Vrba J, Vrba J. Energy parasites trigger oncogene mutation. Int J Radiat Biol 2016; 92:577-82. [PMID: 27548028 DOI: 10.1080/09553002.2016.1222095] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
PURPOSE Cancer initialization can be explained as a result of parasitic virus energy consumption leading to randomized genome chemical bonding. MATERIALS AND METHODS Analysis of experimental data on cell-mediated immunity (CMI) containing about 12,000 cases of healthy humans, cancer patients and patients with precancerous cervical lesions disclosed that the specific cancer and the non-specific lactate dehydrogenase-elevating (LDH) virus antigen elicit similar responses. The specific antigen is effective only in cancer type of its origin but the non-specific antigen in all examined cancers. CMI results of CIN patients display both healthy and cancer state. The ribonucleic acid (RNA) of the LDH virus parasitizing on energy reduces the ratio of coherent/random oscillations. Decreased effect of coherent cellular electromagnetic field on bonding electrons in biological macromolecules leads to elevating probability of random genome reactions. RESULTS Overlapping of wave functions in biological macromolecules depends on energy of the cellular electromagnetic field which supplies energy to bonding electrons for selective chemical bonds. CMI responses of cancer and LDH virus antigens in all examined healthy, precancerous and cancer cases point to energy mechanism in cancer initiation. CONCLUSIONS Dependence of the rate of biochemical reactions on biological electromagnetic field explains yet unknown mechanism of genome mutation.
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Affiliation(s)
- Jiří Pokorný
- a Institute of Physics, Czech Academy of Sciences , Prague , Czech Republic
| | - Jan Pokorný
- a Institute of Physics, Czech Academy of Sciences , Prague , Czech Republic
| | - Anna Jandová
- b Institute of Photonics and Electronics, Czech Academy of Sciences , Prague , Czech Republic
| | - Jitka Kobilková
- c 1st Faculty of Medicine, Department of Obstetrics and Gynaecology , Charles University , Prague , Czech Republic
| | - Jan Vrba
- d Faculty of Electrical Engineering , Czech Technical University in Prague , Prague , Czech Republic
| | - Jan Vrba
- e Faculty of Biomedical Engineering , Czech Technical University in Kladno , Kladno , Czech Republic
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Abstract
A sufficiently complex set of molecules, if subject to perturbation, will self-organize and show emergent behaviour. If such a system can take on information it will become subject to natural selection. This could explain how self-replicating molecules evolved into life and how intelligence arose. A pivotal step in this evolutionary process was of course the emergence of the eukaryote and the advent of the mitochondrion, which both enhanced energy production per cell and increased the ability to process, store and utilize information. Recent research suggest that from its inception life embraced quantum effects such as 'tunnelling' and 'coherence' while competition and stressful conditions provided a constant driver for natural selection. We believe that the biphasic adaptive response to stress described by hormesis-a process that captures information to enable adaptability, is central to this whole process. Critically, hormesis could improve mitochondrial quantum efficiency, improving the ATP/ROS ratio, whereas inflammation, which is tightly associated with the aging process, might do the opposite. This all suggests that to achieve optimal health and healthy aging, one has to sufficiently stress the system to ensure peak mitochondrial function, which itself could reflect selection of optimum efficiency at the quantum level.
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Affiliation(s)
- Alistair V W Nunn
- Research Centre for Optimal Health, Department of Life Sciences, University of Westminster, London W1W 6UW, U.K.
| | - Geoffrey W Guy
- GW Pharmaceuticals, Porton Down, Salisbury, Wiltshire SP4 0JQ, U.K
| | - Jimmy D Bell
- Research Centre for Optimal Health, Department of Life Sciences, University of Westminster, London W1W 6UW, U.K
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Wang R, MoYung KC, Zhao YJ, Poon K. A Mechanism for the Temporal Potentiation of Genipin to the Cytotoxicity of Cisplatin in Colon Cancer Cells. Int J Med Sci 2016; 13:507-16. [PMID: 27429587 PMCID: PMC4946121 DOI: 10.7150/ijms.15449] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Accepted: 05/31/2016] [Indexed: 12/11/2022] Open
Abstract
OBJECTIVES To investigate the potentiation effect of Genipin to Cisplatin induced cell senescence in HCT-116 colon cancer cells in vitro. METHODS Cell viability was estimated by Propidium iodide and Hoechst 3342, reactive oxygen species (ROS) with DHE, mitochondrial membrane potential (MMP) with JC-1 MMP assay Kit and electron current production with microbial fuel cells (MFC). RESULTS Genipin inhibited the UCP2 mediated anti-oxidative proton leak significantly promoted the Cisplatin induced ROS and subsequent cell death, which was similar to that of UCP2-siRNA. Cells treated with Cisplatin alone or combined with Genipin, ROS negatively, while MMP positively correlated with cell viability. Cisplatin induced ROS was significantly decreased by detouring electrons to MFC, or increased by Genipin combined treatment. Compensatory effects of UCP2 up-regulation with time against Genipin treatment were suggested. Shorter the Genipin treatment before Cisplatin better promoted the Cisplatin induced ROS and subsequent cell death. CONCLUSION The interaction of leaked electron with Cisplatin was important during ROS generation. Inhibition of UCP2-mediated proton leak with Genipin potentiated the cytotoxicity of Cisplatin. Owing to the compensatory effects against Genipin, shorter Genipin treatment before Cisplatin was recommended in order to achieve better potentiation effect.
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Affiliation(s)
- Ruihua Wang
- 1. Department of Gastroenterology, Shenzhen Hospital of Southern Medical University, Shenzhen, Guangdong,China 518100
| | - K C MoYung
- 2. Program of Food Science and Technology, Division of Science and Technology, BNU-HKBU United International College, 28 Jinfeng Road, Tangjiawan, Zhuhai, Guangdong, China 519085
| | - Y J Zhao
- 2. Program of Food Science and Technology, Division of Science and Technology, BNU-HKBU United International College, 28 Jinfeng Road, Tangjiawan, Zhuhai, Guangdong, China 519085
| | - Karen Poon
- 2. Program of Food Science and Technology, Division of Science and Technology, BNU-HKBU United International College, 28 Jinfeng Road, Tangjiawan, Zhuhai, Guangdong, China 519085
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