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Hammond J, Richards CJ, Ko Y, Jonker T, Åberg C, Roos WH, Lira RB. Membrane Fusion-Based Drug Delivery Liposomes Transiently Modify the Material Properties of Synthetic and Biological Membranes. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2025; 21:e2408039. [PMID: 40007088 PMCID: PMC11947515 DOI: 10.1002/smll.202408039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/06/2024] [Revised: 02/03/2025] [Indexed: 02/27/2025]
Abstract
Many drug targets are located in intracellular compartments of cells but they often remain inaccessible to standard imaging and therapeutic agents. To aid intracellular delivery, drug carrier nanoparticles have been used to overcome the barrier imposed by the plasma membrane. The carrier must entrap large amounts of cargo, efficiently and quickly deliver the cargo in the cytosol or other intracellular compartments, and must be inert; they should not induce cellular responses or alter the cell state in the course of delivery. This study demonstrates that cationic liposomes with high charge density efficiently fuse with synthetic membranes and the plasma membrane of living cells. Direct fusion efficiently delivers large amounts of cargo to cells and cell-like vesicles within seconds, bypassing slow and often inefficient internalization-based pathways. These effects depend on liposome charge density, concentration, and the helper lipid. However, fusion-mediated cargo delivery results in the incorporation of large amounts of foreign lipids, causing changes to the material properties of these membranes, namely modifications in membrane packing and fluidity, induction of membrane curvature, decrease in surface tension, and the formation of (short-lived) pores. Importantly, these effects are transient and liposome removal allows cells to recover their state prior to liposome interaction.
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Affiliation(s)
- Jayna Hammond
- Moleculaire BiofysicaZernike InstituutRijksuniversiteit GroningenGroningenThe Netherlands
| | - Ceri J. Richards
- Moleculaire BiofysicaZernike InstituutRijksuniversiteit GroningenGroningenThe Netherlands
- Pharmaceutical AnalysisGroningen Research Institute of PharmacyRijksuniversiteit GroningenGroningenThe Netherlands
| | - YouBeen Ko
- Moleculaire BiofysicaZernike InstituutRijksuniversiteit GroningenGroningenThe Netherlands
| | - Thijs Jonker
- Moleculaire BiofysicaZernike InstituutRijksuniversiteit GroningenGroningenThe Netherlands
| | - Christoffer Åberg
- Pharmaceutical AnalysisGroningen Research Institute of PharmacyRijksuniversiteit GroningenGroningenThe Netherlands
| | - Wouter H. Roos
- Moleculaire BiofysicaZernike InstituutRijksuniversiteit GroningenGroningenThe Netherlands
| | - Rafael B. Lira
- Moleculaire BiofysicaZernike InstituutRijksuniversiteit GroningenGroningenThe Netherlands
- Present address:
Department of BionanoscienceKavli Institute of NanoscienceDelft University of TechnologyDelftThe Netherlands
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2
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Dadhich R, Kapoor S. Lipidomic and Membrane Mechanical Signatures in Triple-Negative Breast Cancer: Scope for Membrane-Based Theranostics. Mol Cell Biochem 2022; 477:2507-2528. [PMID: 35595957 DOI: 10.1007/s11010-022-04459-4] [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: 09/28/2021] [Accepted: 04/28/2022] [Indexed: 10/18/2022]
Abstract
Triple-negative breast cancer (TNBC) is a highly aggressive form of breast cancer associated with poor prognosis, higher grade, and a high rate of metastatic occurrence. Limited therapeutic interventions and the compounding issue of drug resistance in triple-negative breast cancer warrants the discovery of novel therapeutic targets and diagnostic modules. To this view, in addition to proteins, lipids also regulate cellular functions via the formation of membranes that modulate membrane protein function, diffusion, and their localization; thus, orchestrating signaling hot spots enriched in specific lipids/proteins on cell membranes. Lipid deregulation in cancer leads to reprogramming of the membrane dynamics and functions impacting cell proliferation, metabolism, and metastasis, providing exciting starting points for developing lipid-based approaches for treating TNBC. In this review, we provide a detailed account of specific lipidic changes in breast cancer, link the altered lipidome with membrane structure and mechanical properties, and describe how these are linked to subsequent downstream functions implicit in cancer progression, metastasis, and chemoresistance. At the fundamental level, we discuss how the lipid-centric findings in TNBC are providing cues for developing lipid-inspired theranostic strategies while bridging existing gaps in our understanding of the functional involvement of lipid membranes in cancer.
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Affiliation(s)
- Ruchika Dadhich
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400076, India
| | - Shobhna Kapoor
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400076, India. .,Graduate School of Integrated Sciences for Life, Hiroshima University, Hiroshima, 739-8528, Japan.
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3
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Xia X, Yang H, Au DWY, Lai SPH, Lin Y, Cho WCS. Membrane Repairing Capability of Non-Small Cell Lung Cancer Cells Is Regulated by Drug Resistance and Epithelial-Mesenchymal-Transition. MEMBRANES 2022; 12:428. [PMID: 35448398 PMCID: PMC9029135 DOI: 10.3390/membranes12040428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 04/10/2022] [Accepted: 04/13/2022] [Indexed: 11/17/2022]
Abstract
The plasma membrane separates the interior of the cells from the extracellular fluid and protects the cell from disruptive external factors. Therefore, the self-repairing capability of the membrane is crucial for cells to maintain homeostasis and survive in a hostile environment. Here, we found that micron-sized membrane pores induced by cylindrical atomic force microscope probe puncture resealed significantly (~1.3-1.5 times) faster in drug-resistant non-small cell lung cancer (NSCLC) cell lines than in their drug-sensitive counterparts. Interestingly, we found that such enhanced membrane repairing ability was due to the overexpression of annexin in drug-resistant NSCLC cells. In addition, a further ~50% reduction in membrane resealing time (i.e., from ~23 s to ~13 s) was observed through the epithelial-mesenchymal-transition, highlighting the superior viability and potential of highly aggressive tumor cells using membrane resealing as an indicator for assessing the drug-resistivity and pathological state of cancer.
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Affiliation(s)
- Xingyu Xia
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, China; (X.X.); (H.Y.)
| | - Hanbo Yang
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, China; (X.X.); (H.Y.)
| | - Dennis Wai-Yin Au
- Department of Clinical Oncology, Queen Elizabeth Hospital, Hong Kong, China;
| | - Syrus Pak-Hei Lai
- Department of Clinical Oncology, The University of Hong Kong, Hong Kong, China;
| | - Yuan Lin
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong, China; (X.X.); (H.Y.)
- Advanced Biomedical Instrumentation Centre, Hong Kong Science Park, Shatin, New Territories, Hong Kong, China
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4
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Lira RB, Leomil FSC, Melo RJ, Riske KA, Dimova R. To Close or to Collapse: The Role of Charges on Membrane Stability upon Pore Formation. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:e2004068. [PMID: 34105299 PMCID: PMC8188222 DOI: 10.1002/advs.202004068] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Revised: 12/14/2020] [Indexed: 05/28/2023]
Abstract
Resealing of membrane pores is crucial for cell survival. Membrane surface charge and medium composition are studied as defining regulators of membrane stability. Pores are generated by electric field or detergents. Giant vesicles composed of zwitterionic and negatively charged lipids mixed at varying ratios are subjected to a strong electric pulse. Interestingly, charged vesicles appear prone to catastrophic collapse transforming them into tubular structures. The spectrum of destabilization responses includes the generation of long-living submicroscopic pores and partial vesicle bursting. The origin of these phenomena is related to the membrane edge tension, which governs pore closure. This edge tension significantly decreases as a function of the fraction of charged lipids. Destabilization of charged vesicles upon pore formation is universal-it is also observed with other poration stimuli. Disruption propensity is enhanced for membranes made of lipids with higher degree of unsaturation. It can be reversed by screening membrane charge in the presence of calcium ions. The observed findings in light of theories of stability and curvature generation are interpreted and mechanisms acting in cells to prevent total membrane collapse upon poration are discussed. Enhanced membrane stability is crucial for the success of electroporation-based technologies for cancer treatment and gene transfer.
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Affiliation(s)
- Rafael B. Lira
- Departamento de BiofísicaUniversidade Federal de São PauloSão Paulo04039‐032Brazil
- Department of Theory and BiosystemsMax Planck Institute of Colloids and InterfacesPotsdam14424Germany
- Present address:
Moleculaire BiofysicaZernike InstituutRijksuniversiteitGroningen9747 AGThe Netherlands
| | | | - Renan J. Melo
- Instituto de FísicaUniversidade de São PauloSão Paulo05508‐090Brazil
| | - Karin A. Riske
- Departamento de BiofísicaUniversidade Federal de São PauloSão Paulo04039‐032Brazil
| | - Rumiana Dimova
- Department of Theory and BiosystemsMax Planck Institute of Colloids and InterfacesPotsdam14424Germany
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5
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Zhang Y, Yan Z, Xia X, Lin Y. A Novel Electroporation System for Living Cell Staining and Membrane Dynamics Interrogation. MICROMACHINES 2020; 11:E767. [PMID: 32796554 PMCID: PMC7466103 DOI: 10.3390/mi11080767] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 08/07/2020] [Accepted: 08/10/2020] [Indexed: 12/11/2022]
Abstract
A novel electroporation system was developed to introduce transient membrane pores to cells in a spatially and temporally controlled manner, allowing us to achieve fast electrotransfection and live cell staining as well as to systematically interrogate the dynamics of the cell membrane. Specifically, using this platform, we showed that both reversible and irreversible electroporation could be induced in the cell population, with nano-sized membrane pores in the former case being able to self-reseal in ~10 min. In addition, green fluorescent protein(GFP)-vinculin plasmid and 543 phalloidin have been delivered successively into fibroblast cells, which enables us to monitor the distinct roles of vinculin and F-actin in cell adhesion and migration as well as their possible interplay during these processes. Compared to conventional bulk electroporation and staining methods, the new system offers advantages such as low-voltage operation, cellular level manipulation and testing, fast and adjustable transfection/staining and real-time monitoring; the new system therefore could be useful in different biophysical studies in the future.
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Affiliation(s)
- Yuanjun Zhang
- HKU-Shenzhen Institute of Research and Innovation (HKU-SIRI), Guangdong 518057, China; (Y.Z.); (Z.Y.); (X.X.)
| | - Zishen Yan
- HKU-Shenzhen Institute of Research and Innovation (HKU-SIRI), Guangdong 518057, China; (Y.Z.); (Z.Y.); (X.X.)
| | - Xingyu Xia
- HKU-Shenzhen Institute of Research and Innovation (HKU-SIRI), Guangdong 518057, China; (Y.Z.); (Z.Y.); (X.X.)
| | - Yuan Lin
- Department of Mechanical Engineering, The University of Hong Kong, Hong Kong SAR, China
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6
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Ren J, Li J, Li Y, Xiao P, Liu Y, Tsang CM, Tsao SW, Lau D, Chan KWY, Lam RHW. Elasticity-Modulated Microbeads for Classification of Floating Normal and Cancer Cells Using Confining Microchannels. ACS Biomater Sci Eng 2019; 5:3889-3898. [DOI: 10.1021/acsbiomaterials.8b01273] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Jifeng Ren
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong, Special Administrative Region of the People’s Republic of China
| | - Jiyu Li
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong, Special Administrative Region of the People’s Republic of China
| | - Yongshu Li
- School of Biomedical Sciences, The University of Hong Kong, Pok Fu Lam, Hong Kong, Special Administrative Region of the People’s Republic of China
| | - Peng Xiao
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong, Special Administrative Region of the People’s Republic of China
| | - Yi Liu
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong, Special Administrative Region of the People’s Republic of China
| | - Chi Man Tsang
- School of Biomedical Sciences, The University of Hong Kong, Pok Fu Lam, Hong Kong, Special Administrative Region of the People’s Republic of China
| | - Sai Wah Tsao
- School of Biomedical Sciences, The University of Hong Kong, Pok Fu Lam, Hong Kong, Special Administrative Region of the People’s Republic of China
| | - Denvid Lau
- Department of Architecture and Civil Engineering, City University of Hong Kong, Kowloon, Hong Kong, Special Administrative Region of the People’s Republic of China
| | - Kannie W. Y. Chan
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong, Special Administrative Region of the People’s Republic of China
| | - Raymond H. W. Lam
- Department of Biomedical Engineering, City University of Hong Kong, Kowloon, Hong Kong, Special Administrative Region of the People’s Republic of China
- City University of Hong Kong, Shenzhen Research Institute, Shenzhen 518057, China
- Centre for Biosystems, Neuroscience, and Nanotechnology, City University of Hong Kong, Kowloon, Hong Kong, Special Administrative Region of the People’s Republic of China
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7
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Eshrati M, Amadei F, Staffer S, Stremmel W, Tanaka M. Shear-Enhanced Dynamic Adhesion of Lactobacillus rhamnosus GG on Intestinal Epithelia: Correlative Effect of Protein Expression and Interface Mechanics. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:529-537. [PMID: 30567428 DOI: 10.1021/acs.langmuir.8b02931] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The oral uptake of probiotic microorganisms as food additives is one widely used strategy to sustain and improve the homeostasis of intestinal microbiota that protect the intestinal epithelia from attack by pathogenic bacteria. Once delivered to the ileum and colon, probiotics must adhere and form colonies on mucus that coats the surface of intestinal epithelial cells. Although an increasing amount of knowledge about the genetic and molecular level mechanisms of probiotics-mucus interactions has been accumulated, little is known about the physicochemical aspects of probiotics-mucus interactions under physiological shear in intestines. In this study, we established well-defined models of intestinal epithelial cell monolayers based on two major constituents of gut epithelia, enterocytes and goblet cells. First, the formation of a polarized cell monolayer sealed by tight junctions was monitored by transepithelial electrical resistance over time. The establishment of tight junctions and secretion of mucus proteins (mucin) was confirmed by immunofluorescence staining. In the next step, we measured the elasticity of cell monolayer surfaces by indentation using particle-assisted atomic force microscopy. The effective elastic modulus of goblet cell-like cells was 30 times smaller compared to that of enterocyte-like cells, which can be attributed to the secretion of a 3 μm thick mucin layer. As probiotics, we used Lactobacillus rhamnosus GG (LGG), which is one of the most widely used strains as food additives. To investigate the dynamic adhesion of LGG to the intestine model surface, we transferred the epithelial cell monolayer into a microfluidic chamber. A distinct difference in dynamic adhesion between two cell types was observed, which could be attributed to the difference in the mucin expression amount. Remarkably, we found that the dynamic LGG adhesion is enhanced by the increase in shear stress, showing a maximum binding efficiency at 0.3 Pa. Finally, we examined the persistence of LGG adhesion by a stepwise increase in the shear stress exerted on adherent LGG, demonstrating that LGG could withstand high shear stress even beyond that of physiological stress. The obtained results present a large potential to quantitatively understand the influence of engineered foods and probiotics on the homeostasis of microbiota on the surface of intestinal epithelia.
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Affiliation(s)
- Maryam Eshrati
- Physical Chemistry of Biosystems, Institute of Physical Chemistry , Heidelberg University , D69120 Heidelberg , Germany
| | - Federico Amadei
- Physical Chemistry of Biosystems, Institute of Physical Chemistry , Heidelberg University , D69120 Heidelberg , Germany
| | - Simone Staffer
- Internal Medicine IV , University Hospital Heidelberg , D69120 Heidelberg , Germany
| | - Wolfgang Stremmel
- Internal Medicine IV , University Hospital Heidelberg , D69120 Heidelberg , Germany
- Medical Center Baden-Baden , D76530 Baden-Baden , Germany
| | - Motomu Tanaka
- Physical Chemistry of Biosystems, Institute of Physical Chemistry , Heidelberg University , D69120 Heidelberg , Germany
- Center for Integrative Medicine and Physics, Institute for Advanced Study , Kyoto University , 606-8501 Kyoto , Japan
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8
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Gong Z, Fang C, You R, Shao X, Wei X, Chang RCC, Lin Y. Distinct relaxation timescales of neurites revealed by rate-dependent indentation, relaxation and micro-rheology tests. SOFT MATTER 2019; 15:166-174. [PMID: 30420982 DOI: 10.1039/c8sm01747f] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Although the dynamic response of neurites is believed to play crucial roles in processes like axon outgrowth and formation of the neural network, the dynamic mechanical properties of such protrusions remain poorly understood. In this study, by using AFM (atomic force microscopy) indentation, we systematically examined the dynamic behavior of well-developed neurites on primary neurons under different loading modes (step loading, oscillating loading and ramp loading). Interestingly, the response was found to be strongly rate-dependent, with an apparent initial and long-term elastic modulus around 800 and 80 Pa, respectively. To better analyze the measurement data and extract information of key interest, the finite element simulation method (FEM) was also conducted where the neurite was treated as a viscoelastic solid consisting of multiple characteristic relaxation times. It was found that a minimum of three relaxation timescales, i.e. ∼0.01, 0.1 and 1 seconds, are needed to explain the observed relaxation curve as well as fit simulation results to the indentation and rheology data under different loading rates and driving frequencies. We further demonstrated that these three characteristic relaxation times likely originate from the thermal fluctuations of the microtubule, membrane relaxation and cytosol viscosity, respectively. By identifying key parameters describing the time-dependent behavior of neurites, as well as revealing possible physical mechanisms behind, this study could greatly help us understand how neural cells perform their biological duties over a wide spectrum of timescales.
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Affiliation(s)
- Ze Gong
- Department of Mechanical Engineering, University of Hong Kong, Hong Kong SAR, China.
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9
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Dermol-Černe J, Miklavčič D, Reberšek M, Mekuč P, Bardet SM, Burke R, Arnaud-Cormos D, Leveque P, O'Connor R. Plasma membrane depolarization and permeabilization due to electric pulses in cell lines of different excitability. Bioelectrochemistry 2018; 122:103-114. [PMID: 29621662 DOI: 10.1016/j.bioelechem.2018.03.011] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Revised: 02/13/2018] [Accepted: 03/19/2018] [Indexed: 12/18/2022]
Abstract
In electroporation-based medical treatments, excitable tissues are treated, either intentionally (irreversible electroporation of brain cancer, gene electrotransfer or ablation of the heart muscle, gene electrotransfer of skeletal muscles), or unintentionally (excitable tissues near the target area). We investigated how excitable and non-excitable cells respond to electric pulses, and if electroporation could be an effective treatment of the tumours of the central nervous system. For three non-excitable and one excitable cell line, we determined a strength-duration curve for a single pulse of 10ns-10ms. The threshold for depolarization decreased with longer pulses and was higher for excitable cells. We modelled the response with the Lapicque curve and the Hodgkin-Huxley model. At 1μs a plateau of excitability was reached which could explain why high-frequency irreversible electroporation (H-FIRE) electroporates but does not excite cells. We exposed cells to standard electrochemotherapy parameters (8×100μs pulses, 1Hz, different voltages). Cells behaved similarly which indicates that electroporation most probably occurs at the level of lipid bilayer, independently of the voltage-gated channels. These results could be used for optimization of electric pulses to achieve maximal permeabilization and minimal excitation/pain sensation. In the future, it should be established whether the in vitro depolarization correlates to nerve/muscle stimulation and pain sensation in vivo.
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Affiliation(s)
- Janja Dermol-Černe
- University of Ljubljana, Faculty of Electrical Engineering, Tržaška cesta 25, SI-1000 Ljubljana, Slovenia.
| | - Damijan Miklavčič
- University of Ljubljana, Faculty of Electrical Engineering, Tržaška cesta 25, SI-1000 Ljubljana, Slovenia.
| | - Matej Reberšek
- University of Ljubljana, Faculty of Electrical Engineering, Tržaška cesta 25, SI-1000 Ljubljana, Slovenia.
| | - Primož Mekuč
- University of Ljubljana, Faculty of Electrical Engineering, Tržaška cesta 25, SI-1000 Ljubljana, Slovenia
| | - Sylvia M Bardet
- University of Limoges, CNRS, XLIM, UMR 7252, F-87000 Limoges, France.
| | - Ryan Burke
- University of Limoges, CNRS, XLIM, UMR 7252, F-87000 Limoges, France
| | | | - Philippe Leveque
- University of Limoges, CNRS, XLIM, UMR 7252, F-87000 Limoges, France.
| | - Rodney O'Connor
- École des Mines de Saint-Étienne, Department of Bioelectronics, Georges Charpak Campus, Centre Microélectronique de Provence, 880 Route de Mimet, 13120 Gardanne, France.
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10
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Yan Z, Hui TH, Fong HW, Shao X, Cho WC, Ngan KC, Yip TC, Lin Y. An electroporation platform for Erlotinib resistance screening in living non-small cell lung cancer (NSCLC) cells. Biomed Phys Eng Express 2018. [DOI: 10.1088/2057-1976/aa99e9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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11
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Fan W, Yung B, Huang P, Chen X. Nanotechnology for Multimodal Synergistic Cancer Therapy. Chem Rev 2017; 117:13566-13638. [DOI: 10.1021/acs.chemrev.7b00258] [Citation(s) in RCA: 1221] [Impact Index Per Article: 152.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Wenpei Fan
- Guangdong
Key Laboratory for Biomedical Measurements and Ultrasound Imaging,
School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China
- Key
Laboratory of Optoelectronic Devices and Systems of Ministry of Education
and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
- Laboratory
of Molecular Imaging and Nanomedicine, National Institute of Biomedical
Imaging and Bioengineering, National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Bryant Yung
- Laboratory
of Molecular Imaging and Nanomedicine, National Institute of Biomedical
Imaging and Bioengineering, National Institutes of Health, Bethesda, Maryland 20892, United States
| | - Peng Huang
- Guangdong
Key Laboratory for Biomedical Measurements and Ultrasound Imaging,
School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen 518060, China
| | - Xiaoyuan Chen
- Laboratory
of Molecular Imaging and Nanomedicine, National Institute of Biomedical
Imaging and Bioengineering, National Institutes of Health, Bethesda, Maryland 20892, United States
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