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Lázaro M, Lupiáñez P, Sola-Leyva A, Pozo-Gualda T, Oltolina F, Jimenez-Carretero M, Jimenez-Lopez C, Carrasco-Jiménez MP, Iglesias GR. The importance of cell uptake in photothermal treatments mediated by biomimetic magnetic nanoparticles. Colloids Surf B Biointerfaces 2024; 234:113722. [PMID: 38160473 DOI: 10.1016/j.colsurfb.2023.113722] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 12/12/2023] [Accepted: 12/19/2023] [Indexed: 01/03/2024]
Abstract
Biomimetic magnetic nanoparticles (BMNPs) mediated by MamC have proven to be photothermal agents able to allow an optimized cytotoxicity against tumoral cells when used simultaneously as drug nanotransporters and as hyperthermia agents. However, it remains unclear whether BMNPs need to be internalized by the cells and/or if there is a threshold for internal Fe concentration for the photothermal therapy to be effective. In this study, three different situations for photothermal treatments have been simulated to disentangle the effect of BMNPs cell uptake on cell viability after photothermal treatments. Human hepatoblastoma (HepG2) cell line was treated with suspensions of BMNPs, and protocols were developed to have only intracellular BMNPs, only extracellular BMNPs or both, followed by photothermal exposure of the treated cell cultures. Our data demonstrate that: (1) Although the heating efficiency of the photothermal agent is not altered by its location (intra/extracellular), the intracellular location of BMNPs is crucial to ensure the cytotoxic effect of photothermal treatments, especially at low Fe concentration. In fact, the concentration of BMNPs needed to reach the same cytotoxic effect following upon laser irradiation of 0.2 W/cm2 is three times larger if BMNPs are located extracellularly compared to that needed if BMNPs are located intracellularly; (2) For a given location of the BMNPs, cell death increases with BMNPs (or Fe) concentration. When BMNPs are located intracellularly, there is a threshold for Fe concentration (∼ 0.5 mM at laser power intensities of 0.1 W/cm2) needed to affect cell viability following upon cell exposure to photothermia. (3) Bulk temperature rise is not the only factor accounting for cell death. Actually, temperature increases inside the cells cause more damage to cell structures and trigger cell death more efficiently than an increase in the temperature outside the cell.
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Affiliation(s)
- M Lázaro
- NanoMag Laboratory. Department of Applied Physics, Edificio I+D Josefina Castro, University of Granada, Instituto de Investigación Biosanitaria, Av. de Madrid, 28, Granada 18012, Spain
| | - P Lupiáñez
- NanoMag Laboratory. Department of Applied Physics, Edificio I+D Josefina Castro, University of Granada, Instituto de Investigación Biosanitaria, Av. de Madrid, 28, Granada 18012, Spain
| | - A Sola-Leyva
- Department of Biochemistry and Molecular Biology I, Faculty of Sciences, 18071 Granada, Spain
| | - T Pozo-Gualda
- Department of Microbiology, Faculty of Sciences, 18071 Granada, Spain
| | - F Oltolina
- Department of Microbiology, Faculty of Sciences, 18071 Granada, Spain
| | | | - C Jimenez-Lopez
- Department of Microbiology, Faculty of Sciences, 18071 Granada, Spain.
| | - M P Carrasco-Jiménez
- Department of Biochemistry and Molecular Biology I, Faculty of Sciences, 18071 Granada, Spain.
| | - G R Iglesias
- NanoMag Laboratory. Department of Applied Physics, Edificio I+D Josefina Castro, University of Granada, Instituto de Investigación Biosanitaria, Av. de Madrid, 28, Granada 18012, Spain
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2
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Zhang C, Tian Z, Chen R, Rowan F, Qiu K, Sun Y, Guan JL, Diao J. Advanced imaging techniques for tracking drug dynamics at the subcellular level. Adv Drug Deliv Rev 2023; 199:114978. [PMID: 37385544 PMCID: PMC10527994 DOI: 10.1016/j.addr.2023.114978] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 06/17/2023] [Accepted: 06/26/2023] [Indexed: 07/01/2023]
Abstract
Optical microscopes are an important imaging tool that have effectively advanced the development of modern biomedicine. In recent years, super-resolution microscopy (SRM) has become one of the most popular techniques in the life sciences, especially in the field of living cell imaging. SRM has been used to solve many problems in basic biological research and has great potential in clinical application. In particular, the use of SRM to study drug delivery and kinetics at the subcellular level enables researchers to better study drugs' mechanisms of action and to assess the efficacy of their targets in vivo. The purpose of this paper is to review the recent advances in SRM and to highlight some of its applications in assessing subcellular drug dynamics.
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Affiliation(s)
- Chengying Zhang
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Zhiqi Tian
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Rui Chen
- Department of Chemistry, University of Cincinnati, Cincinnati, OH 45221, USA
| | - Fiona Rowan
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Kangqiang Qiu
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Yujie Sun
- Department of Chemistry, University of Cincinnati, Cincinnati, OH 45221, USA
| | - Jun-Lin Guan
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA
| | - Jiajie Diao
- Department of Cancer Biology, University of Cincinnati College of Medicine, Cincinnati, OH 45267, USA.
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3
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Baldea I, Petran A, Florea A, Sevastre-Berghian A, Nenu I, Filip GA, Cenariu M, Radu MT, Iacovita C. Magnetic Nanoclusters Stabilized with Poly[3,4-Dihydroxybenzhydrazide] as Efficient Therapeutic Agents for Cancer Cells Destruction. NANOMATERIALS (BASEL, SWITZERLAND) 2023; 13:933. [PMID: 36903811 PMCID: PMC10005337 DOI: 10.3390/nano13050933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 03/01/2023] [Accepted: 03/02/2023] [Indexed: 06/18/2023]
Abstract
Magnetic structures exhibiting large magnetic moments are sought after in theranostic approaches that combine magnetic hyperthermia treatment (MH) and diagnostic magnetic resonance imaging in oncology, since they offer an enhanced magnetic response to an external magnetic field. We report on the synthesized production of a core-shell magnetic structure using two types of magnetite nanoclusters (MNC) based on a magnetite core and polymer shell. This was achieved through an in situ solvothermal process, using, for the first time, 3,4-dihydroxybenzhydrazide (DHBH) and poly[3,4-dihydroxybenzhydrazide] (PDHBH) as stabilizers. Transmission electron microscopy (TEM) analysis showed the formation of spherical MNC, X-ray photoelectronic spectroscopy (XPS) and Fourier transformed infrared (FT-IR) analysis proved the existence of the polymer shell. Magnetization measurement showed saturation magnetization values of 50 emu/g for PDHBH@MNC and 60 emu/g for DHBH@MNC with very low coercive field and remanence, indicating that the MNC are in a superparamagnetic state at room temperature and are thus suitable for biomedical applications. MNCs were investigated in vitro, on human normal (dermal fibroblasts-BJ) and tumor (colon adenocarcinoma-CACO2, and melanoma-A375) cell lines, in view of toxicity, antitumor effectiveness and selectivity upon magnetic hyperthermia. MNCs exhibited good biocompatibility and were internalized by all cell lines (TEM), with minimal ultrastructural changes. By means of flowcytometry apoptosis detection, fluorimetry, spectrophotometry for mitochondrial membrane potential, oxidative stress, ELISA-caspases, and Western blot-p53 pathway, we show that MH efficiently induced apoptosis mostly via the membrane pathway and to a lower extent by the mitochondrial pathway, the latter mainly observed in melanoma. Contrarily, the apoptosis rate was above the toxicity limit in fibroblasts. Due to its coating, PDHBH@MNC showed selective antitumor efficacy and can be further used in theranostics since the PDHBH polymer provides multiple reaction sites for the attachment of therapeutic molecules.
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Affiliation(s)
- Ioana Baldea
- Department of Physiology, Iuliu Hatieganu University of Medicine and Pharmacy, Clinicilor 1–3 Str., 400012 Cluj-Napoca, Romania
| | - Anca Petran
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67–103 Donat Str., 400293 Cluj-Napoca, Romania
| | - Adrian Florea
- Department of Cell and Molecular Biology, Faculty of Medicine, Iuliu Hațieganu University of Medicine and Pharmacy, Pasteur 6 Str., 400349 Cluj-Napoca, Romania
| | - Alexandra Sevastre-Berghian
- Department of Physiology, Iuliu Hatieganu University of Medicine and Pharmacy, Clinicilor 1–3 Str., 400012 Cluj-Napoca, Romania
| | - Iuliana Nenu
- Department of Physiology, Iuliu Hatieganu University of Medicine and Pharmacy, Clinicilor 1–3 Str., 400012 Cluj-Napoca, Romania
| | - Gabriela Adriana Filip
- Department of Physiology, Iuliu Hatieganu University of Medicine and Pharmacy, Clinicilor 1–3 Str., 400012 Cluj-Napoca, Romania
| | - Mihai Cenariu
- Department of Biochemistry, University of Agricultural Sciences and Veterinary Medicine, Calea Manastur 3–5 Str., 400658 Cluj-Napoca, Romania
| | - Maria Teodora Radu
- National Institute for Research and Development of Isotopic and Molecular Technologies, 67–103 Donat Str., 400293 Cluj-Napoca, Romania
| | - Cristian Iacovita
- Department of Pharmaceutical Physics-Biophysics, Faculty of Pharmacy, “Iuliu Hatieganu” University of Medicine and Pharmacy, 6 Pasteur Str., 400349 Cluj-Napoca, Romania
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4
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Dynamic intracellular exchange of nanomaterials' protein corona perturbs proteostasis and remodels cell metabolism. Proc Natl Acad Sci U S A 2022; 119:e2200363119. [PMID: 35653569 DOI: 10.1073/pnas.2200363119] [Citation(s) in RCA: 51] [Impact Index Per Article: 25.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
SignificanceThis study analyzed the dynamic protein corona on the surface of nanoparticles as they traversed from blood to cell lysosomes and escaped from lysosomes to cytoplasm in the target cells. We found with proteomic analysis an abundance of chaperone and glycolysis coronal proteins (i.e., heat shock cognate protein 70, heat shock protein 90, and pyruvate kinase M2 [PKM2]) after escape of the nanoparticles from lysosomes to the cytosol. Alterations of the coronal proteins (e.g., PKM2 and chaperone binding) induced proteostasis collapse, which subsequently led to elevated chaperone-mediated autophagy (CMA) activity in cells. As PKM2 is a key molecule in cell metabolism, we also revealed that PKM2 depletion was causative to CMA-induced cell metabolism disruption from glycolysis to lipid metabolism.
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Mathekga BSP, Nxumalo Z, Thimiri Govinda Raj DB. Micro and nanofluidics for high throughput drug screening. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2022; 187:93-120. [PMID: 35094783 DOI: 10.1016/bs.pmbts.2021.07.020] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
In this book chapter, we elaborate on the state-of-the-art technology developments in high throughput screening, microfluidics and nanofluidics. This book chapter further elaborated on the application of microfluidics and nanofluidics for high throughput drug screening with respect to communicable diseases and non-communicable diseases such as cancer. As a future perspective, there is tremendous potential for microfluidics and nanofluidics to be applied in high throughput drug screening which could be applied for various biotechnology applications such as in cancer precision medicine, point-of-care diagnostics and imaging. With the integration of Fourth industrial revolution (4IR) technologies with micro and nanofluidics technologies, it envisioned that such integration along with digital health would enable next generation technology development in medical field.
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Affiliation(s)
| | - Zandile Nxumalo
- Synthetic Nanobiotechnology and Biomachines Group, Synthetic Biology and Precision Medicine Centre, CSIR, Pretoria, South Africa
| | - Deepak B Thimiri Govinda Raj
- Synthetic Nanobiotechnology and Biomachines Group, Synthetic Biology and Precision Medicine Centre, CSIR, Pretoria, South Africa.
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6
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Maqbool Q, Jung A, Won S, Cho J, Son JG, Yeom B. Chiral Magneto-Optical Properties of Supra-Assembled Fe 3O 4 Nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2021; 13:54301-54307. [PMID: 34748312 DOI: 10.1021/acsami.1c16954] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Research on the chiral magneto-optical properties of inorganic nanomaterials has enabled novel applications in advanced optical and electronic devices. However, the corresponding chiral magneto-optical responses have only been studied under strong magnetic fields of ≥1 T, which limits the wider application of these novel materials. In this paper, we report on the enhanced chiral magneto-optical activity of supra-assembled Fe3O4 magnetite nanoparticles in the visible range at weak magnetic fields of 1.5 mT. The spherical supra-assembled particles with a diameter of ∼90 nm prepared by solvothermal synthesis had single-crystal-like structures, which resulted from the oriented attachment of nanograins. They exhibited superparamagnetic behavior even with a relatively large supraparticle diameter that exceeded the size limit for superparamagnetism. This can be attributed to the small size of nanograins with a diameter of ∼12 nm that constitute the suprastructured particles. Magnetic circular dichroism (MCD) measurements at magnetic fields of 1.5 mT showed distinct chiral magneto-optical activity from charge transfer transitions of magnetite in the visible range. For the supraparticles with lower crystallinity, the MCD peaks in the 250-550 nm range assigned as the ligand-to-metal charge transfer (LMCT) and the inter-sublattice charge transfer (ISCT) show increased intensities in comparison to those with higher crystallinity samples. On the contrary, the higher crystallinity sample shows higher MCD intensities near 600-700 nm for the intervalence charge transfer (IVCT) transition. The differences in MCD responses can be attributed to the crystallinity determined by the reaction time, lattice distortion near grain boundaries of the constituent nanocrystals, and dipolar interactions in the supra-assembled structures.
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Affiliation(s)
- Qysar Maqbool
- Department of Chemical Engineering, Hanyang University, Seoul 04763, Republic of Korea
- Institute of Nano Science and Technology, Hanyang University, Seoul 04763, Republic of Korea
| | - Arum Jung
- Department of Chemical Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Sojeong Won
- Department of Chemical Engineering, Hanyang University, Seoul 04763, Republic of Korea
| | - Jinhan Cho
- Department of Chemical and Biological Engineering, Korea University, Seongbuk-gu, Seoul 02841, Republic of Korea
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seongbuk-gu, Seoul 02841, Republic of Korea
| | - Jeong Gon Son
- KU-KIST Graduate School of Converging Science and Technology, Korea University, Seongbuk-gu, Seoul 02841, Republic of Korea
- Soft Hybrid Materials Research Center, Korea Institute of Science and Technology (KIST), Seongbuk-gu, Seoul 02792, Republic of Korea
| | - Bongjun Yeom
- Department of Chemical Engineering, Hanyang University, Seoul 04763, Republic of Korea
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7
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Grobler L, Suleman E, Thimiri Govinda Raj DB. Patents and technology transfer in CRISPR technology. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2021; 180:153-182. [PMID: 33934836 DOI: 10.1016/bs.pmbts.2021.01.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
CRISPR technology has revolutionized biological research in the last decade and many academic institutions and companies have patented CRISPR systems and applications. Several patents have been filed for various applications of CRISPR in different industries such as agriculture, synthetic biology, bio-nanotechnology and precision medicine. Despite tremendous pressure on the technology transfer teams, several startups and spin-out companies are already using CRISPR technologies for commercial applications. In this chapter, we discuss the different CRISPR nucleases and their applications. Secondly, we detail our current opinion and perspective on the CRISPR patent and technology landscape for non-mammalian systems. We present two case-studies on CRISPR diagnostics companies, SHERLOCK and Mammoth Biosciences, who are currently at the forefront of establishing diagnostics platforms for coronavirus (SARS-CoV-2) detection. Finally, our chapter identifies future advancements and possible challenges that CRISPR technology might face in non-mammalian systems.
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Affiliation(s)
- Lichelle Grobler
- Synthetic Nanobiotechnology and Biomachines Group, ERA Synthetic Biology, Centre for Synthetic Biology and Precision Medicine, CSIR, Pretoria, South Africa
| | - Essa Suleman
- Veterinary Molecular Diagnostics and Vaccines, Medical Devices and Diagnostics Impact Area, CSIR, Pretoria, South Africa
| | - Deepak B Thimiri Govinda Raj
- Synthetic Nanobiotechnology and Biomachines Group, ERA Synthetic Biology, Centre for Synthetic Biology and Precision Medicine, CSIR, Pretoria, South Africa.
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8
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Nweke EE, Thimiri Govinda Raj DB. Development of insect cell line using CRISPR technology. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2021; 180:1-20. [PMID: 33934833 DOI: 10.1016/bs.pmbts.2021.01.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
In this chapter, we delineated the methods of CRISPR technology that has been used for the development of engineered insect cell line. We elaborated on how CRISPR/Cas9 genome editing in Drosophila melanogaster, Bombyx mori, Spodoptera frugiperda (Sf9 and Sf21), and Mosquitoes enabled the use of model or non-model insect system in various biological and medical applications. Also, the application of synthetic baculovirus genome along with CRISPR/Cas9 vector system to enable genome editing of insect cell systems for treatment of communicable and non-communicable diseases.
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Affiliation(s)
| | - Deepak B Thimiri Govinda Raj
- Synthetic Nanobiotechnology and Biomachines Group, ERA Synthetic Biology, Centre for Synthetic Biology and Precision Medicine, CSIR, Pretoria, South Africa.
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9
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Beola L, Asín L, Roma-Rodrigues C, Fernández-Afonso Y, Fratila RM, Serantes D, Ruta S, Chantrell RW, Fernandes AR, Baptista PV, de la Fuente JM, Grazú V, Gutiérrez L. The Intracellular Number of Magnetic Nanoparticles Modulates the Apoptotic Death Pathway after Magnetic Hyperthermia Treatment. ACS APPLIED MATERIALS & INTERFACES 2020; 12:43474-43487. [PMID: 32870658 DOI: 10.1021/acsami.0c12900] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/06/2023]
Abstract
Magnetic hyperthermia is a cancer treatment based on the exposure of magnetic nanoparticles to an alternating magnetic field in order to generate local heat. In this work, 3D cell culture models were prepared to observe the effect that a different number of internalized particles had on the mechanisms of cell death triggered upon the magnetic hyperthermia treatment. Macrophages were selected by their high capacity to uptake nanoparticles. Intracellular nanoparticle concentrations up to 7.5 pg Fe/cell were measured both by elemental analysis and magnetic characterization techniques. Cell viability after the magnetic hyperthermia treatment was decreased to <25% for intracellular iron contents above 1 pg per cell. Theoretical calculations of the intracellular thermal effects that occurred during the alternating magnetic field application indicated a very low increase in the global cell temperature. Different apoptotic routes were triggered depending on the number of internalized particles. At low intracellular magnetic nanoparticle amounts (below 1 pg Fe/cell), the intrinsic route was the main mechanism to induce apoptosis, as observed by the high Bax/Bcl-2 mRNA ratio and low caspase-8 activity. In contrast, at higher concentrations of internalized magnetic nanoparticles (1-7.5 pg Fe/cell), the extrinsic route was observed through the increased activity of caspase-8. Nevertheless, both mechanisms may coexist at intermediate iron concentrations. Knowledge on the different mechanisms of cell death triggered after the magnetic hyperthermia treatment is fundamental to understand the biological events activated by this procedure and their role in its effectiveness.
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Affiliation(s)
- Lilianne Beola
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - Laura Asín
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
- Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 50009 Zaragoza, Spain
| | - Catarina Roma-Rodrigues
- UCIBIO, Departamento de Cičncias da Vida, Faculdade de Cičncias e Tecnologia, Universidade Nova de Lisboa, Campus da Caparica, 2829-516 Caparica, Portugal
| | - Yilian Fernández-Afonso
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - Raluca M Fratila
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
- Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 50009 Zaragoza, Spain
| | - David Serantes
- Applied Physics Department and Instituto de Investigacións Tecnolóxicas, Universidade de Santiago de Compostela, 15782 Santiago de Compostela, Spain
| | - Sergiu Ruta
- Department of Physics, University of York, Heslington, YO10 5DD York, United Kingdom
| | - Roy W Chantrell
- Department of Physics, University of York, Heslington, YO10 5DD York, United Kingdom
| | - Alexandra R Fernandes
- UCIBIO, Departamento de Cičncias da Vida, Faculdade de Cičncias e Tecnologia, Universidade Nova de Lisboa, Campus da Caparica, 2829-516 Caparica, Portugal
| | - Pedro V Baptista
- UCIBIO, Departamento de Cičncias da Vida, Faculdade de Cičncias e Tecnologia, Universidade Nova de Lisboa, Campus da Caparica, 2829-516 Caparica, Portugal
| | - Jesús M de la Fuente
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
- Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 50009 Zaragoza, Spain
| | - Valeria Grazú
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
- Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 50009 Zaragoza, Spain
| | - Lucía Gutiérrez
- Instituto de Nanociencia y Materiales de Aragón (INMA), CSIC-Universidad de Zaragoza, 50009 Zaragoza, Spain
- Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), 50009 Zaragoza, Spain
- Department of Analytical Chemistry, Universidad de Zaragoza, Edificio I+D, 50018 Zaragoza, Spain
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10
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Lee K, Park J, Kang J, Lee TG, Kim HM, Kim KB. Surface modification of solid-state nanopore by plasma-polymerized chemical vapor deposition of poly(ethylene glycol) for stable device operation. NANOTECHNOLOGY 2020; 31:185503. [PMID: 31945750 DOI: 10.1088/1361-6528/ab6cdb] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Biopolymer adsorption onto a membrane is a significant issue in the reliability of solid-state nanopore devices, since it degrades the device performance or promotes device failure. In this work, a poly(ethylene glycol) (PEG) layer was coated on a silicon nitride (SiNx) membrane by plasma-polymerized vapor deposition to inhibit biopolymer adsorption. From optical observations, the deposited PEG layer demonstrated increased hydrophilicity and anti-adsorption property compared to the SiNx surface. Electrical properties of the PEG/SiNx nanopore were characterized, showing Ohmic behavior and a 6.3 times higher flicker noise power due to the flexible conformation of PEG in water. Antifouling performance of each surface was analyzed by measuring the average time from voltage bias to the first adsorption during DNA translocation experiments, where the modified surface enabled two times prolonged device operation. The time to adsorption was dependent on the applied voltage, implying adsorption probability was dominated by the electrophoretic DNA approach to the nanopore. DNA translocation behaviors on each surface were identified from translocation signals, as the PEG layer promoted unfolded and fast movement of DNA through the nanopore. This work successfully analyzed the effect of the PEG layer on DNA adsorption and translocation in solid-state nanopore experiments.
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Affiliation(s)
- Kidan Lee
- Department of Materials Science and Engineering, Seoul National University, Seoul 08826, Republic of Korea
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11
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Thimiri Govinda Raj DB, Khan NA, Venkatachalam S, Arumugam S, Palaniswamy S. Synthesis of Hybrid Gold Nanoparticle (AuNP) Functionalized Superparamagnetic Nanoparticles (SPMNPs) for Efficient Coupling of Biomolecules. Methods Mol Biol 2020; 2125:73-75. [PMID: 31463891 DOI: 10.1007/7651_2019_254] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Recently, we reported our methodology for isolating plasma membrane and lysosome from eukaryotic cell using superparamagnetic nanoparticles (SPMNPs). Here in this article, we report a step-by-step protocol for synthesis of hybrid gold nanoparticle (AuNP), surface functionalization of AuNPs on superparamagnetic nanoparticles (SPMNPs), and potential use of hybrid AuNP-SPMNP for efficient coupling of biomolecules.
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Affiliation(s)
| | - Niamat Ali Khan
- Envirotransgene® Bio-solutions Global, Chennai, India
- DTCG®, Chennai, India
| | | | - Sivakumar Arumugam
- School of Bio Sciences and Technology (SBST), VIT University, Vellore, Tamil Nadu, India
| | - Selvamani Palaniswamy
- Department of Pharmaceutical Technology, Anna University, Tiruchirappalli, Tamil Nadu, India
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12
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Li Y, Qin H, Ye M. An overview on enrichment methods for cell surface proteome profiling. J Sep Sci 2019; 43:292-312. [PMID: 31521063 DOI: 10.1002/jssc.201900700] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 09/09/2019] [Accepted: 09/11/2019] [Indexed: 12/17/2022]
Abstract
Cell surface proteins are essential for many important biological processes, including cell-cell interactions, signal transduction, and molecular transportation. With the characteristics of low abundance, high hydrophobicity, and high heterogeneity, it is difficult to get a comprehensive view of cell surface proteome by direct analysis. Thus, it is important to selectively enrich the cell surface proteins before liquid chromatography with mass spectrometry analysis. In recent years, a variety of enrichment methods have been developed. Based on the separation mechanism, these methods could be mainly classified into three types. The first type is based on their difference in the physicochemical property, such as size, density, charge, and hydrophobicity. The second one is based on the bimolecular affinity interaction with lectin or antibody. And the third type is based on the chemical covalent coupling to free side groups of surface-exposed proteins or carbohydrate chains, such as primary amines, carboxyl groups, glycan side chains. In addition, metabolic labeling and enzymatic reaction-based methods have also been employed to selectively isolate cell surface proteins. In this review, we will provide a comprehensive overview of the enrichment methods for cell surface proteome profiling.
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Affiliation(s)
- Yanan Li
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian, 116023, P. R. China.,University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Hongqiang Qin
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian, 116023, P. R. China
| | - Mingliang Ye
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences (CAS), Dalian, 116023, P. R. China
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