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Fucoidan/UVC Combined Treatment Exerts Preferential Antiproliferation in Oral Cancer Cells but Not Normal Cells. Antioxidants (Basel) 2022; 11:antiox11091797. [PMID: 36139871 PMCID: PMC9495684 DOI: 10.3390/antiox11091797] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2022] [Revised: 09/04/2022] [Accepted: 09/11/2022] [Indexed: 12/29/2022] Open
Abstract
Combined treatment is a promising anticancer strategy for improving antiproliferation compared with a single treatment but is limited by adverse side effects on normal cells. Fucoidan (FN), a brown-algae-derived polysaccharide safe food ingredient, exhibits preferential function for antiproliferation to oral cancer but not normal cells. Utilizing the preferential antiproliferation, the impacts of FN in regulating ultraviolet C (UVC) irradiation were assessed in oral cancer cells. A combined treatment (UVC/FN) reduced cell viability of oral cancer cells (Ca9-22 and CAL 27) more than single treatments (FN or UVC), i.e., 53.7%/54.6% vs. 71.2%/91.6%, and 89.2%/79.4%, respectively, while the cell viability of UVC/FN treating on non-malignant oral (S–G) was higher than oral cancer cells, ranging from 106.0 to 108.5%. Mechanistically, UVC/FN preferentially generated higher subG1 accumulation and apoptosis-related inductions (annexin V, caspases 3, 8, and 9) in oral cancer cells than single treatments. UVC/FN preferentially generated higher oxidative stress than single treatments, as evidenced by flow cytometry-detecting reactive oxygen species, mitochondrial superoxide, and glutathione. Moreover, UVC/FN preferentially caused more DNA damage (γH2AX and 8-hydroxy-2’-deoxyguanosine) in oral cancer cells than in single treatments. N-acetylcysteine pretreatment validated the oxidative stress effects in these UVC/FN-induced changes. Taken together, FN effectively enhances UVC-triggered antiproliferation to oral cancer cells. UVC/FN provides a promising potential for preferential and synergistic antiproliferation in antioral cancer therapy.
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Robeldo T, Ribeiro LS, Manrique L, Kubo AM, Longo E, Camargo ER, Borra RC. Modified Titanium Dioxide as a Potential Visible-Light-Activated Photosensitizer for Bladder Cancer Treatment. ACS OMEGA 2022; 7:17563-17574. [PMID: 35664588 PMCID: PMC9161409 DOI: 10.1021/acsomega.1c07046] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 03/09/2022] [Indexed: 06/15/2023]
Abstract
Low oxygen concentration inside the tumor microenvironment represents a major barrier for photodynamic therapy of many malignant tumors, especially urothelial bladder cancer. In this context, titanium dioxide, which has a low cost and can generate high ROS levels regardless of local O2 concentrations, could be a potential type of photosensitizer for treating this type of cancer. However, the use of UV can be a major disadvantage, since it promotes breakage of the chemical bonds of the DNA molecule on normal tissues. In the present study, we focused on the cytotoxic activities of a new material (Ti(OH)4) capable of absorbing visible light and producing high amounts of ROS. We used the malignant bladder cell line MB49 to evaluate the effects of multiple concentrations of Ti(OH)4 on the cytotoxicity, proliferation, migration, and production of ROS. In addition, the mechanisms of cell death were investigated using FACS, accumulation of lysosomal acid vacuoles, caspase-3 activity, and mitochondrial electrical potential assays. The results showed that exposure of Ti(OH)4 to visible light stimulates the production of ROS and causes dose-dependent necrosis in tumor cells. Also, Ti(OH)4 was capable of inhibiting the proliferation and migration of MB49 in low concentrations. An increase in the mitochondrial membrane potential associated with the accumulation of acid lysosomes and low caspase-3 activity suggests that type II cell death could be initiated by autophagic dysfunction mechanisms associated with high ROS production. In conclusion, the characteristics of Ti(OH)4 make it a potential photosensitizer against bladder cancer.
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Affiliation(s)
| | - Lucas S. Ribeiro
- CDMF,
LIEC, Chemistry Department of the Federal
University of São Carlos (UFSCar), São Carlos, São Paulo 13565-905, Brazil
| | - Lida Manrique
- Laboratory
of Applied Immunology, Federal University
of São Carlos (UFSCar), São Carlos, São Paulo 13565-905,Brazil
| | - Andressa Mayumi Kubo
- CDMF,
LIEC, Chemistry Department of the Federal
University of São Carlos (UFSCar), São Carlos, São Paulo 13565-905, Brazil
| | - Elson Longo
- CDMF,
LIEC, Chemistry Department of the Federal
University of São Carlos (UFSCar), São Carlos, São Paulo 13565-905, Brazil
| | - Emerson Rodrigues Camargo
- CDMF,
LIEC, Chemistry Department of the Federal
University of São Carlos (UFSCar), São Carlos, São Paulo 13565-905, Brazil
| | - Ricardo Carneiro Borra
- Laboratory
of Applied Immunology, Federal University
of São Carlos (UFSCar), São Carlos, São Paulo 13565-905,Brazil
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Wang SC, Yen CY, Shiau JP, Chang MY, Hou MF, Tang JY, Chang HW. Combined Treatment of Nitrated [6,6,6]Tricycles Derivative (SK2)/Ultraviolet C Highly Inhibits Proliferation in Oral Cancer Cells In Vitro. Biomedicines 2022; 10:biomedicines10051196. [PMID: 35625933 PMCID: PMC9138449 DOI: 10.3390/biomedicines10051196] [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: 04/30/2022] [Revised: 05/19/2022] [Accepted: 05/20/2022] [Indexed: 11/16/2022] Open
Abstract
Combined treatment is an effective strategy to improve anticancer therapy, but severe side effects frequently limit this application. Drugs inhibiting the proliferation of cancer cells, but not normal cells, display preferential antiproliferation to cancer cells. It shows the benefits of avoiding side effects and enhancing antiproliferation for combined treatment. Nitrated [6,6,6]tricycles derivative (SK2), a novel chemical exhibiting benzo-fused dioxabicyclo[3.3.1]nonane core with an n-butyloxy substituent, exhibiting preferential antiproliferation, was chosen to evaluate its potential antioral cancer effect in vitro by combining it with ultraviolet C (UVC) irradiation. Combination treatment (UVC/SK2) caused lower viability in oral cancer cells (Ca9-22 and OC-2) than single treatment (20 J/m2 UVC or 10 μg/mL SK2), i.e., 42.3%/41.1% vs. 81.6%/69.2%, and 89.5%/79.6%, respectively. In contrast, it showed a minor effect on cell viability of normal oral cells (HGF-1), ranging from 82.2 to 90.6%. Moreover, UVC/SK2 caused higher oxidative stress in oral cancer cells than normal cells through the examination of reactive oxygen species, mitochondrial superoxide, and mitochondrial membrane potential. UVC/SK2 also caused subG1 increment associated with apoptosis detections by assessing annexin V; panaspase; and caspases 3, 8, and 9. The antiproliferation and oxidative stress were reverted by N-acetylcysteine, validating the involvement of oxidative stress in antioral cancer cells. UVC/SK2 also caused DNA damage by detecting γH2AX and 8-hydroxy-2′-deoxyguanosine in oral cancer cells. In conclusion, SK2 is an effective enhancer for improving the UVC-caused antiproliferation against oral cancer cells in vitro. UVC/SK2 demonstrated a preferential and synergistic antiproliferation ability towards oral cancer cells with little adverse effects on normal cells.
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Affiliation(s)
- Sheng-Chieh Wang
- Department of Biomedical Science and Environmental Biology, Ph.D. Program in Life Sciences, College of Life Sciences, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (S.-C.W.); (M.-F.H.)
| | - Ching-Yu Yen
- Department of Oral and Maxillofacial Surgery Chi-Mei Medical Center, Tainan 71004, Taiwan;
- School of Dentistry, Taipei Medical University, Taipei 11031, Taiwan
| | - Jun-Ping Shiau
- Department of Surgery, Kaohsiung Municipal Siaogang Hospital, Kaohsiung 81267, Taiwan;
- Division of Breast Oncology and Surgery, Department of Surgery, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Meng-Yang Chang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan;
| | - Ming-Feng Hou
- Department of Biomedical Science and Environmental Biology, Ph.D. Program in Life Sciences, College of Life Sciences, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (S.-C.W.); (M.-F.H.)
- Department of Surgery, Kaohsiung Municipal Siaogang Hospital, Kaohsiung 81267, Taiwan;
- Division of Breast Oncology and Surgery, Department of Surgery, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Jen-Yang Tang
- School of Post-Baccalaureate Medicine, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Department of Radiation Oncology, Kaohsiung Medical University Hospital, Kaoshiung Medical University, Kaohsiung 80708, Taiwan
- Correspondence: (J.-Y.T.); (H.-W.C.); Tel.: +7-886-7-312-1101 (ext. 7158) (J.-Y.T.); +7-886-7-312-1101 (ext. 2691) (H.-W.C.)
| | - Hsueh-Wei Chang
- Department of Biomedical Science and Environmental Biology, Ph.D. Program in Life Sciences, College of Life Sciences, Kaohsiung Medical University, Kaohsiung 80708, Taiwan; (S.-C.W.); (M.-F.H.)
- Center for Cancer Research, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
- Correspondence: (J.-Y.T.); (H.-W.C.); Tel.: +7-886-7-312-1101 (ext. 7158) (J.-Y.T.); +7-886-7-312-1101 (ext. 2691) (H.-W.C.)
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4
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Shanmugam BK, Rangaraj S, Subramani K, Srinivasan S, Kandhasamy N, Arumugam K, Periyasamy M, Aicher WK, Venkatachalam R. Biomimetic development of chitosan and sodium alginate-based nanocomposites contains zirconia for tissue engineering applications. J Biomed Mater Res B Appl Biomater 2022; 110:1942-1955. [PMID: 35289080 DOI: 10.1002/jbm.b.35052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Revised: 02/21/2022] [Accepted: 02/25/2022] [Indexed: 01/13/2023]
Abstract
Nanostructured materials possess unique structural and functional properties that play a crucial position in tissue engineering applications. Present investigation is aimed to synthesize chitosan-sodium alginate (CS) nanocomposite using hydrothermally prepared zirconia nanoparticles. In this, three different weight percentages of (0.5, 1, and 1.5) zirconia nanoparticles are utilized for the preparation of biomimetic nanocomposite scaffolds (CSZ) employing 4 wt% of CS by a solvent casting technique. Physico-chemical and thermal behavior of the prepared nanoparticles and their CSZ scaffolds are comprehensively characterized. Bioactivity of the prepared zirconia nanoparticles and CSZ scaffolds are explored in terms of in vitro biocompatibility, protein absorption in simulated body fluid (SBF), and phosphate buffered saline (PBS). Agar disc diffusion method is employed to identify the antibacterial property against Staphylococcus aureus and Escherichia coli. In vitro cytotoxicity of zirconia nanoparticles and CSZ scaffolds is identified against human urothelial carcinoma (UC6) and osteosarcoma (MG-63) cells. These studies explore that zirconia nanoparticles are suitable for biomedical applications while it is interacted with chitosan and sodium alginate (CS) due to their promising biocompatibility. Biomimetically obtained chitosan/sodium alginate scaffold contain 1 wt% zirconia nanoparticles show higher biocompatibility amenable for tissue engineering applications.
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Affiliation(s)
| | - Suriyaprabha Rangaraj
- Department of Biotechnology, Sona College of Arts and Science, Salem, Tamil Nadu, India
| | - Karthik Subramani
- Department of Biotechnology, Vivekanandha Arts & Science College for Women, Salem, Tamil Nadu, India
| | - Surendhiran Srinivasan
- Centre for Nano Science and Technology, K. S. Rangasamy College of Technology, Tiruchengode, Tamil Nadu, India
| | - Narthana Kandhasamy
- Centre for Nano Science and Technology, K. S. Rangasamy College of Technology, Tiruchengode, Tamil Nadu, India.,Centre for Nanoscience and Technology, Sathyabama Institute of Science and Technology (Deemed to be University), Chennai, Tamil Nadu, India
| | - Karthik Arumugam
- Centre for Nano Science and Technology, K. S. Rangasamy College of Technology, Tiruchengode, Tamil Nadu, India
| | - Manojkumar Periyasamy
- Centre for Nano Science and Technology, K. S. Rangasamy College of Technology, Tiruchengode, Tamil Nadu, India
| | - Wilhelm K Aicher
- Department of Urology, University of Tübingen Hospital, Tübingen, Germany
| | - Rajendran Venkatachalam
- Centre for Nano Science and Technology, K. S. Rangasamy College of Technology, Tiruchengode, Tamil Nadu, India.,Department of Physics, Dr. N. G. P. Arts and Science College, Coimbatore, Tamil Nadu, India
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5
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Kolathupalayam Shanmugam B, Murugan V, Karthik A, Rangaraj S, Subramani K, Srinivasan S, Kandhasamy N, Aicher WK, Rajendran V. Silica incorporated chitosan-sodium alginate nanocomposite scaffolds for tissue engineering applications. INT J POLYM MATER PO 2022. [DOI: 10.1080/00914037.2022.2032703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
| | - Vinoth Murugan
- Department of Electrical and Electronics Engineering, Selvam College of Technology, Namakkal, India
| | - Arumugam Karthik
- Centre for Nano Science and Technology, K. S. Rangasamy College of Technology, Tiruchengode, India
| | | | - Karthik Subramani
- Department of Biotechnology, Vivekanandha Arts and Science College for Women, Salem, India
| | - Surendhiran Srinivasan
- Centre for Nano Science and Technology, K. S. Rangasamy College of Technology, Tiruchengode, India
| | - Narthana Kandhasamy
- Centre for Nano Science and Technology, K. S. Rangasamy College of Technology, Tiruchengode, India
- Centre for Nanoscience and Technology, Sathyabama Institute of Science and Technology (Deemed to be University), Chennai, India
| | - Wilhelm K. Aicher
- Department of Urology, University of Tübingen Hospital, Tübingen, Germany
| | - Venkatachalam Rajendran
- Centre for Nano Science and Technology, K. S. Rangasamy College of Technology, Tiruchengode, India
- Department of Physics, Dr. N. G. P. Arts and Science College, Coimbatore, India
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6
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Raval J, Gongadze E, Benčina M, Junkar I, Rawat N, Mesarec L, Kralj-Iglič V, Góźdź W, Iglič A. Mechanical and Electrical Interaction of Biological Membranes with Nanoparticles and Nanostructured Surfaces. MEMBRANES 2021; 11:membranes11070533. [PMID: 34357183 PMCID: PMC8307671 DOI: 10.3390/membranes11070533] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Revised: 07/05/2021] [Accepted: 07/05/2021] [Indexed: 11/27/2022]
Abstract
In this review paper, we theoretically explain the origin of electrostatic interactions between lipid bilayers and charged solid surfaces using a statistical mechanics approach, where the orientational degree of freedom of lipid head groups and the orientational ordering of the water dipoles are considered. Within the modified Langevin Poisson–Boltzmann model of an electric double layer, we derived an analytical expression for the osmotic pressure between the planar zwitterionic lipid bilayer and charged solid planar surface. We also show that the electrostatic interaction between the zwitterionic lipid head groups of the proximal leaflet and the negatively charged solid surface is accompanied with a more perpendicular average orientation of the lipid head-groups. We further highlight the important role of the surfaces’ nanostructured topography in their interactions with biological material. As an example of nanostructured surfaces, we describe the synthesis of TiO2 nanotubular and octahedral surfaces by using the electrochemical anodization method and hydrothermal method, respectively. The physical and chemical properties of these nanostructured surfaces are described in order to elucidate the influence of the surface topography and other physical properties on the behavior of human cells adhered to TiO2 nanostructured surfaces. In the last part of the paper, we theoretically explain the interplay of elastic and adhesive contributions to the adsorption of lipid vesicles on the solid surfaces. We show the numerically predicted shapes of adhered lipid vesicles corresponding to the minimum of the membrane free energy to describe the influence of the vesicle size, bending modulus, and adhesion strength on the adhesion of lipid vesicles on solid charged surfaces.
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Affiliation(s)
- Jeel Raval
- Group of Physical Chemistry of Complex Systems, Institute of Physical Chemistry, Polish Academy of Sciences, 01-224 Warsaw, Poland; (J.R.); (W.G.)
| | - Ekaterina Gongadze
- Laboratory of Physics, Faculty of Electrical Engineering, University of Ljubljana, 1000 Ljubljana, Slovenia; (E.G.); (N.R.); (L.M.)
| | - Metka Benčina
- Department of Surface Engineering and Optoelectronics, Jožef Stefan Institute, 1000 Ljubljana, Slovenia; (M.B.); (I.J.)
| | - Ita Junkar
- Department of Surface Engineering and Optoelectronics, Jožef Stefan Institute, 1000 Ljubljana, Slovenia; (M.B.); (I.J.)
| | - Niharika Rawat
- Laboratory of Physics, Faculty of Electrical Engineering, University of Ljubljana, 1000 Ljubljana, Slovenia; (E.G.); (N.R.); (L.M.)
| | - Luka Mesarec
- Laboratory of Physics, Faculty of Electrical Engineering, University of Ljubljana, 1000 Ljubljana, Slovenia; (E.G.); (N.R.); (L.M.)
| | - Veronika Kralj-Iglič
- Laboratory of Clinical Biophysics, Faculty of Health Sciences, University of Ljubljana, 1000 Ljubljana, Slovenia;
| | - Wojciech Góźdź
- Group of Physical Chemistry of Complex Systems, Institute of Physical Chemistry, Polish Academy of Sciences, 01-224 Warsaw, Poland; (J.R.); (W.G.)
| | - Aleš Iglič
- Laboratory of Physics, Faculty of Electrical Engineering, University of Ljubljana, 1000 Ljubljana, Slovenia; (E.G.); (N.R.); (L.M.)
- Laboratory of Clinical Biophysics, Chair of Orthopaedics, Faculty of Medicine, University of Ljubljana, 1000 Ljubljana, Slovenia
- Correspondence: ; Tel.: +386-1-4768-825
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7
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Skočaj M, Bizjak M, Strojan K, Lojk J, Erdani Kreft M, Miš K, Pirkmajer S, Bregar VB, Veranič P, Pavlin M. Proposing Urothelial and Muscle In Vitro Cell Models as a Novel Approach for Assessment of Long-Term Toxicity of Nanoparticles. Int J Mol Sci 2020; 21:ijms21207545. [PMID: 33066271 PMCID: PMC7589566 DOI: 10.3390/ijms21207545] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 10/07/2020] [Accepted: 10/09/2020] [Indexed: 12/11/2022] Open
Abstract
Many studies evaluated the short-term in vitro toxicity of nanoparticles (NPs); however, long-term effects are still not adequately understood. Here, we investigated the potential toxic effects of biomedical (polyacrylic acid and polyethylenimine coated magnetic NPs) and two industrial (SiO2 and TiO2) NPs following different short-term and long-term exposure protocols on two physiologically different in vitro models that are able to differentiate: L6 rat skeletal muscle cell line and biomimetic normal porcine urothelial (NPU) cells. We show that L6 cells are more sensitive to NP exposure then NPU cells. Transmission electron microscopy revealed an uptake of NPs into L6 cells but not NPU cells. In L6 cells, we obtained a dose-dependent reduction in cell viability and increased reactive oxygen species (ROS) formation after 24 h. Following continuous exposure, more stable TiO2 and polyacrylic acid (PAA) NPs increased levels of nuclear factor Nrf2 mRNA, suggesting an oxidative damage-associated response. Furthermore, internalized magnetic PAA and TiO2 NPs hindered the differentiation of L6 cells. We propose the use of L6 skeletal muscle cells and NPU cells as a novel approach for assessment of the potential long-term toxicity of relevant NPs that are found in the blood and/or can be secreted into the urine.
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Affiliation(s)
- Matej Skočaj
- Group for nano and biotechnological applications, Faculty of Electrical Engineering, University of Ljubljana, SI-1000 Ljubljana, Slovenia; (M.S.); (M.B.); (K.S.); (J.L.); (V.B.B.)
- Institute of Pathophysiology, Faculty of Medicine, University of Ljubljana, SI-1000 Ljubljana, Slovenia; (K.M.); (S.P.)
- Institute of Cell Biology, Faculty of Medicine, University of Ljubljana, SI-1000 Ljubljana, Slovenia;
| | - Maruša Bizjak
- Group for nano and biotechnological applications, Faculty of Electrical Engineering, University of Ljubljana, SI-1000 Ljubljana, Slovenia; (M.S.); (M.B.); (K.S.); (J.L.); (V.B.B.)
- Institute of Biophysics, Faculty of Medicine, University of Ljubljana, SI-1000 Ljubljana, Slovenia
| | - Klemen Strojan
- Group for nano and biotechnological applications, Faculty of Electrical Engineering, University of Ljubljana, SI-1000 Ljubljana, Slovenia; (M.S.); (M.B.); (K.S.); (J.L.); (V.B.B.)
| | - Jasna Lojk
- Group for nano and biotechnological applications, Faculty of Electrical Engineering, University of Ljubljana, SI-1000 Ljubljana, Slovenia; (M.S.); (M.B.); (K.S.); (J.L.); (V.B.B.)
- Institute of Biophysics, Faculty of Medicine, University of Ljubljana, SI-1000 Ljubljana, Slovenia
| | - Mateja Erdani Kreft
- Institute of Cell Biology, Faculty of Medicine, University of Ljubljana, SI-1000 Ljubljana, Slovenia;
| | - Katarina Miš
- Institute of Pathophysiology, Faculty of Medicine, University of Ljubljana, SI-1000 Ljubljana, Slovenia; (K.M.); (S.P.)
| | - Sergej Pirkmajer
- Institute of Pathophysiology, Faculty of Medicine, University of Ljubljana, SI-1000 Ljubljana, Slovenia; (K.M.); (S.P.)
| | - Vladimir Boštjan Bregar
- Group for nano and biotechnological applications, Faculty of Electrical Engineering, University of Ljubljana, SI-1000 Ljubljana, Slovenia; (M.S.); (M.B.); (K.S.); (J.L.); (V.B.B.)
| | - Peter Veranič
- Institute of Cell Biology, Faculty of Medicine, University of Ljubljana, SI-1000 Ljubljana, Slovenia;
- Correspondence: (P.V.); (M.P.)
| | - Mojca Pavlin
- Group for nano and biotechnological applications, Faculty of Electrical Engineering, University of Ljubljana, SI-1000 Ljubljana, Slovenia; (M.S.); (M.B.); (K.S.); (J.L.); (V.B.B.)
- Institute of Biophysics, Faculty of Medicine, University of Ljubljana, SI-1000 Ljubljana, Slovenia
- Correspondence: (P.V.); (M.P.)
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Pazoki M, Larsson ED, Kullgren J. Density Functional Tight Binding Theory Approach for the CO 2 Reduction Reaction Paths on Anatase TiO 2 Surfaces. ACS OMEGA 2020; 5:25819-25823. [PMID: 33073106 PMCID: PMC7557987 DOI: 10.1021/acsomega.0c03117] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2020] [Accepted: 09/16/2020] [Indexed: 06/11/2023]
Abstract
Herein, we have investigated the CO2 reduction paths on the (101) anatase TiO2 surface using an approach based on the density functional tight binding (DFTB) theory. We analyzed the reaction paths for the conversion of carbon dioxide to methane by performing a large number of calculations with intermediates placed in various orientations and locations at the surface. Our results show that the least stable intermediate is CO2H and therefore a key bottleneck is the reduction of CO2 to formic acid. Hydrogen adsorption is also weak and would also be a limiting factor, unless very high pressures of hydrogen are used. The results from our DFTB approach are in good agreement with the hybrid functional based density functional theory calculations presented in the literature.
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Biomimetic TiO 2-chitosan/sodium alginate blended nanocomposite scaffolds for tissue engineering applications. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2020; 110:110710. [PMID: 32204022 DOI: 10.1016/j.msec.2020.110710] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2019] [Revised: 01/29/2020] [Accepted: 01/29/2020] [Indexed: 01/03/2023]
Abstract
The study is aimed to synthesize potent metal oxide based biomimetic nanocomposites to overcome the risk associated with artificial bone tissue engineering. High purity TiO2 nanoparticles are synthesized via hydrothermal route. A biomimetic nanocomposite scaffolds containing chitosan-sodium alginate (4: 4) blended with three different (0.5, 1, and 1.5 wt%) concentrations of hydrothermally synthesized TiO2 nanoparticles are obtained by solvent casting technique. The physico-chemical and thermal degradation properties of as-synthesized TiO2 nanoparticles and their nanocomposite scaffolds are analyzed. In-vitro cytotoxicity and biocompatibility of the prepared TiO2 nanoparticles and nanocomposites are tested against human bladder tumor (UC6) and osteosarcoma (MG-63) cell lines. Antibacterial property is tested against Escherichia coli and Staphylococcus aureus. These studies reveal that TiO2 nanoparticles and polymeric nanocomposites contain good physico-chemical and mechanical properties for enhanced in-vitro biocompatibility suitable for biomedical applications. Biomimetically prepared chitosan-sodium alginate scaffold containing TiO2 nanoparticles (1 wt%) is found to exhibit superior biocompatibility for bone tissue engineering applications.
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10
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Clustering and separation of hydrophobic nanoparticles in lipid bilayer explained by membrane mechanics. Sci Rep 2018; 8:10810. [PMID: 30018296 PMCID: PMC6050295 DOI: 10.1038/s41598-018-28965-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2018] [Accepted: 07/03/2018] [Indexed: 01/05/2023] Open
Abstract
Small hydrophobic gold nanoparticles with diameter lower than the membrane thickness can form clusters or uniformly distribute within the hydrophobic core of the bilayer. The coexistence of two stable phases (clustered and dispersed) indicates the energy barrier between nanoparticles. We calculated the distance dependence of the membrane-mediated interaction between two adjacent nanoparticles. In our model we consider two deformation modes: the monolayer bending and the hydroxycarbon chain stretching. Existence of an energy barrier between the clustered and the separated state of nanoparticles was predicted. Variation analysis of the membrane mechanical parameters revealed that the energy barrier between two membrane embedded nanoparticles is mainly the consequence of the bending deformation and not change of the thickness of the bilayer in the vicinity of nanoparticles. It is shown, that the forces between the nanoparticles embedded in the biological membrane could be either attractive or repulsive, depending on the mutual distance between them.
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12
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Zupančič D, Kreft ME, Grdadolnik M, Mitev D, Iglič A, Veranič P. Detonation nanodiamonds are promising nontoxic delivery system for urothelial cells. PROTOPLASMA 2018; 255:419-423. [PMID: 28741141 DOI: 10.1007/s00709-017-1146-4] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Accepted: 07/17/2017] [Indexed: 06/07/2023]
Abstract
Detonation nanodiamonds (DNDs) are carbon-based nanomaterials that are among the most promising nanoparticles available for biomedical applications so far. This is due to their biocompatibility, which could be contributed to their inert core and conformable surface nature. However, DNDs cytotoxicity for urothelial cells and the routes of their internalization remains an open question in the aspect of nanodiamond surface. We therefore analyzed four types of DNDs for cytotoxicity and internalization with normal urothelial cells and two types of cancer urothelial cell lines in vitro. Viability of any of the cell types we used was not compromised with any of four DNDs we evaluated after 24-, 48- and 72-h incubation in three different concentrations of DNDs. Transmission electron microscopy revealed that all four types of DNDs were endocytosed into all three types of urothelial cells tested here. We observed DNDs in endosomes, as well as in multivesicular bodies and multilamellar bodies. These results propose using of DNDs as a delivery system for urological applications in human nanomedicine.
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Affiliation(s)
- Daša Zupančič
- Institute of Cell Biology, Faculty of Medicine, University of Ljubljana, Vrazov trg 2, 1000, Ljubljana, Slovenia.
| | - Mateja Erdani Kreft
- Institute of Cell Biology, Faculty of Medicine, University of Ljubljana, Vrazov trg 2, 1000, Ljubljana, Slovenia
| | - Maja Grdadolnik
- Institute of Cell Biology, Faculty of Medicine, University of Ljubljana, Vrazov trg 2, 1000, Ljubljana, Slovenia
| | - Dimitar Mitev
- REGPOT-2012-2013-1 NMP INERA Project, Institute of Solid State Physics-BAS, 72 Tzarigradsko Chaussee Blvd, 1784, Sofia, Bulgaria
| | - Aleš Iglič
- Laboratory of Biophysics, Faculty of Electrical Engineering, University of Ljubljana, Tržaška 25, 1000, Ljubljana, Slovenia
- Laboratory of Clinical Biophysics, Chair of Orthopaedics, Faculty of Medicine, Zaloška 9, 1000, Ljubljana, Slovenia
| | - Peter Veranič
- Institute of Cell Biology, Faculty of Medicine, University of Ljubljana, Vrazov trg 2, 1000, Ljubljana, Slovenia
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Lojk J, Bregar VB, Strojan K, Hudoklin S, Veranič P, Pavlin M, Kreft ME. Increased endocytosis of magnetic nanoparticles into cancerous urothelial cells versus normal urothelial cells. Histochem Cell Biol 2017; 149:45-59. [PMID: 28821965 DOI: 10.1007/s00418-017-1605-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/08/2017] [Indexed: 11/28/2022]
Abstract
The blood-urine barrier is the tightest and most impermeable barrier in the body and as such represents a problem for intravesical drug delivery applications. Differentiation-dependent low endocytotic rate of urothelial cells has already been noted; however, the differences in endocytosis of normal and cancer urothelial cells have not been exploited yet. Here we analysed the endocytosis of rhodamine B isothiocyanate-labelled polyacrylic acid-coated cobalt ferrite nanoparticles (NPs) in biomimetic urothelial in vitro models, i.e., in highly and partially differentiated normal urothelial cells, and in cancer cells of the papillary and invasive urothelial neoplasm. We demonstrated that NPs enter papillary and invasive urothelial neoplasm cells by ruffling of the plasma membrane and engulfment of NP aggregates by macropinocytotic mechanism. Transmission electron microscopy (TEM) and spectrophotometric analyses showed that the efficacy of NPs delivery into normal urothelial cells and intercellular space is largely restricted, while it is significantly higher in cancer urothelial cells. Moreover, we showed that the quantification of fluorescent NP internalization in cells or tissues based on fluorescence detection could be misleading and overestimated without TEM analysis. Our findings contribute to the understanding of endocytosis-mediated cellular uptake of NPs in cancer urothelial cells and reveal a highly selective mechanism to distinguish cancer and normal urothelial cells.
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Affiliation(s)
- Jasna Lojk
- Group for Nano and Biotechnological Applications, Faculty of Electrical Engineering, University of Ljubljana, Trzaska cesta 25, 1000, Ljubljana, Slovenia.,Faculty of Medicine, Institute of Cell Biology, University of Ljubljana, Vrazov trg 2, 1000, Ljubljana, Slovenia
| | - Vladimir Boštjan Bregar
- Group for Nano and Biotechnological Applications, Faculty of Electrical Engineering, University of Ljubljana, Trzaska cesta 25, 1000, Ljubljana, Slovenia
| | - Klemen Strojan
- Group for Nano and Biotechnological Applications, Faculty of Electrical Engineering, University of Ljubljana, Trzaska cesta 25, 1000, Ljubljana, Slovenia
| | - Samo Hudoklin
- Faculty of Medicine, Institute of Cell Biology, University of Ljubljana, Vrazov trg 2, 1000, Ljubljana, Slovenia
| | - Peter Veranič
- Faculty of Medicine, Institute of Cell Biology, University of Ljubljana, Vrazov trg 2, 1000, Ljubljana, Slovenia
| | - Mojca Pavlin
- Group for Nano and Biotechnological Applications, Faculty of Electrical Engineering, University of Ljubljana, Trzaska cesta 25, 1000, Ljubljana, Slovenia. .,Institute of Biophysics, Faculty of Medicine, University of Ljubljana, Vrazov trg 2, Ljubljana, Slovenia.
| | - Mateja Erdani Kreft
- Faculty of Medicine, Institute of Cell Biology, University of Ljubljana, Vrazov trg 2, 1000, Ljubljana, Slovenia.
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Ni W, Li M, Cui J, Xing Z, Li Z, Wu X, Song E, Gong M, Zhou W. 808nm light triggered black TiO 2 nanoparticles for killing of bladder cancer cells. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 81:252-260. [PMID: 28887971 DOI: 10.1016/j.msec.2017.08.020] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2017] [Revised: 07/09/2017] [Accepted: 08/02/2017] [Indexed: 10/19/2022]
Abstract
The black TiO2 nanoparticles are synthesized via a facile calcination method combined with an in-situ controllable solid-state reaction approach. The results indicate that the photocatalyst with a narrow band gap of ~2.32 eV extends the photoresponse to visible light and near infrared region. And thus more reactive oxygen species can be obtained to induce the cell-killing under 808 nm light triggering. The as-obtained black TiO2 nanoparticles exhibiting low toxicity, good biocompatibility and high anticancer effect in vitro, is demonstrated as efficient photosensitizers for phototherapy to kill the bladder cancer cells. These findings suggest that the facile synthetic black TiO2 nanomaterials will have broad application in biomedicine.
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Affiliation(s)
- Wenjun Ni
- Department of Urology Surgery, Third Affiliated Hospital of Harbin Medical University, Harbin 150001, PR China; Department of Urology, Heilongjiang Provincial Hospital, Harbin 150036, PR China
| | - Meng Li
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, PR China
| | - Jiayi Cui
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, PR China
| | - Zipeng Xing
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, PR China.
| | - Zhenzi Li
- Department of Epidemiology and Biostatistics, Harbin Medical University, Harbin 150086, PR China.
| | - Xiaoyan Wu
- Department of Epidemiology and Biostatistics, Harbin Medical University, Harbin 150086, PR China
| | - Erlin Song
- Department of Urology Surgery, First Affiliated Hospital of Harbin Medical University, Harbin 150001, PR China
| | - Mancheng Gong
- Department of Urology, The People's Hospital of Zhongshan, Zhongshan 528403, PR China.
| | - Wei Zhou
- Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education of the People's Republic of China, Heilongjiang University, Harbin 150080, PR China
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Imani R, Dillert R, Bahnemann DW, Pazoki M, Apih T, Kononenko V, Repar N, Kralj-Iglič V, Boschloo G, Drobne D, Edvinsson T, Iglič A. Multifunctional Gadolinium-Doped Mesoporous TiO 2 Nanobeads: Photoluminescence, Enhanced Spin Relaxation, and Reactive Oxygen Species Photogeneration, Beneficial for Cancer Diagnosis and Treatment. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2017; 13:1700349. [PMID: 28374954 DOI: 10.1002/smll.201700349] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Indexed: 06/07/2023]
Abstract
Materials with controllable multifunctional abilities for optical imaging (OI) and magnetic resonant imaging (MRI) that also can be used in photodynamic therapy are very interesting for future applications. Mesoporous TiO2 sub-micrometer particles are doped with gadolinium to improve photoluminescence functionality and spin relaxation for MRI, with the added benefit of enhanced generation of reactive oxygen species (ROS). The Gd-doped TiO2 exhibits red emission at 637 nm that is beneficial for OI and significantly improves MRI relaxation times, with a beneficial decrease in spin-lattice and spin-spin relaxation times. Density functional theory calculations show that Gd3+ ions introduce impurity energy levels inside the bandgap of anatase TiO2 , and also create dipoles that are beneficial for charge separation and decreased electron-hole recombination in the doped lattice. The Gd-doped TiO2 nanobeads (NBs) show enhanced ability for ROS monitored via • OH radical photogeneration, in comparison with undoped TiO2 nanobeads and TiO2 P25, for Gd-doping up to 10%. Cellular internalization and biocompatibility of TiO2 @xGd NBs are tested in vitro on MG-63 human osteosarcoma cells, showing full biocompatibility. After photoactivation of the particles, anticancer trace by means of ROS photogeneration is observed just after 3 min irradiation.
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Affiliation(s)
- Roghayeh Imani
- Institut fuer Technische Chemie, Gottfried Wilhelm Leibniz Universitaet Hannover, Callinstrasse 3, D-30167, Hannover, Germany
- Department of Chemistry-Physical Chemistry Division, Ångström Laboratory, Uppsala University, Box 523, Lägerhyddsvägen 1, 75120, Uppsala, Sweden
- Faculty of Electrical Engineering, Biophysics Laboratory, University of Ljubljana, SI-1000, Slovenia
| | - Ralf Dillert
- Institut fuer Technische Chemie, Gottfried Wilhelm Leibniz Universitaet Hannover, Callinstrasse 3, D-30167, Hannover, Germany
- Laboratory of Nano and Quantum Engineering, University of Hannover, Schneiderberg 39, 30167, Hannover, Germany
| | - Detlef W Bahnemann
- Institut fuer Technische Chemie, Gottfried Wilhelm Leibniz Universitaet Hannover, Callinstrasse 3, D-30167, Hannover, Germany
- Laboratory "Photoactive Nanocomposite Materials", Saint-Petersburg State University, Saint-Petersburg, 198504, Russia
| | - Meysam Pazoki
- Department of Chemistry-Structural Chemistry Division, Ångström Laboratory, Uppsala University, Box 538, Lägerhyddsvägen 1, 75120, Uppsala, Sweden
| | - Tomaž Apih
- Jožef Stefan Institute, Jamova 39, SI-1000, Ljubljana, Slovenia
| | - Veno Kononenko
- Biotechnical Faculty, Department of Biology, University of Ljubljana, Večna pot 111, SI-1000, Ljubljana, Slovenia
| | - Neža Repar
- Biotechnical Faculty, Department of Biology, University of Ljubljana, Večna pot 111, SI-1000, Ljubljana, Slovenia
| | - Veronika Kralj-Iglič
- Faculty of Health Sciences, Biophysics Laboratory, University of Ljubljana, SI-1000, Ljubljana, Slovenia
| | - Gerrit Boschloo
- Department of Chemistry-Physical Chemistry Division, Ångström Laboratory, Uppsala University, Box 523, Lägerhyddsvägen 1, 75120, Uppsala, Sweden
| | - Damjana Drobne
- Biotechnical Faculty, Department of Biology, University of Ljubljana, Večna pot 111, SI-1000, Ljubljana, Slovenia
| | - Tomas Edvinsson
- Department of Engineering Sciences-Solid State Physics Division, Uppsala University, Box 534, 75121, Uppsala, Sweden
| | - Aleš Iglič
- Faculty of Electrical Engineering, Biophysics Laboratory, University of Ljubljana, SI-1000, Slovenia
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Meshik X, Choi M, Baker A, Malchow RP, Covnot L, Doan S, Mukherjee S, Farid S, Dutta M, Stroscio MA. Modulation of voltage-gated conductances of retinal horizontal cells by UV-excited TiO2 nanoparticles. NANOMEDICINE-NANOTECHNOLOGY BIOLOGY AND MEDICINE 2017; 13:1031-1040. [DOI: 10.1016/j.nano.2016.11.008] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2016] [Revised: 10/19/2016] [Accepted: 11/17/2016] [Indexed: 12/25/2022]
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17
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Abstract
Corroles are exceptionally promising platforms for the development of agents for simultaneous cancer-targeting imaging and therapy. Depending on the element chelated by the corrole, these theranostic agents may be tuned primarily for diagnostic or therapeutic function. Versatile synthetic methodologies allow for the preparation of amphipolar derivatives, which form stable noncovalent conjugates with targeting biomolecules. These conjugates can be engineered for imaging and targeting as well as therapeutic function within one theranostic assembly. In this review, we begin with a brief outline of corrole chemistry that has been uniquely useful in designing corrole-based anticancer agents. Then we turn attention to the early literature regarding corrole anticancer activity, which commenced one year after the first scalable synthesis was reported (1999-2000). In 2001, a major advance was made with the introduction of negatively charged corroles, as these molecules, being amphipolar, form stable conjugates with many proteins. More recently, both cellular uptake and intracellular trafficking of metallocorroles have been documented in experimental investigations employing advanced optical spectroscopic as well as magnetic resonance imaging techniques. Key results from work on both cellular and animal models are reviewed, with emphasis on those that have shed new light on the mechanisms associated with anticancer activity. In closing, we predict a very bright future for corrole anticancer research, as it is experiencing exponential growth, taking full advantage of recently developed imaging and therapeutic modalities.
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Affiliation(s)
- Ruijie D Teo
- Division of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena, California 91125, United States
| | - Jae Youn Hwang
- Department of Information and Communication Engineering, Daegu Gyeongbuk Institute of Science & Technology , Daegu, Republic of Korea
| | - John Termini
- Department of Molecular Medicine, Beckman Research Institute of the City of Hope , 1500 East Duarte Road, Duarte, California 91010, United States
| | - Zeev Gross
- Schulich Faculty of Chemistry, Technion-Israel Institute of Technology , Haifa 32000, Israel
| | - Harry B Gray
- Division of Chemistry and Chemical Engineering, California Institute of Technology , Pasadena, California 91125, United States
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18
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Yu Y, Skočaj M, Kreft ME, Resnik N, Veranič P, Franceschi P, Sepčić K, Guella G. Comparative lipidomic study of urothelial cancer models: association with urothelial cancer cell invasiveness. MOLECULAR BIOSYSTEMS 2016; 12:3266-3279. [DOI: 10.1039/c6mb00477f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A joint NMR/LC-MS approach allows to establish significant differences in the lipidoma of invasive urothelial carcinoma cells (T24) with respect to noninvasive urothelial cells (RT4).
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Affiliation(s)
- Yang Yu
- Bioorganic Chemistry Laboratory
- Department of Physics
- University of Trento
- Trento
- Italy
| | - Matej Skočaj
- Institute of Cell Biology
- Faculty of Medicine
- University of Ljubljana
- Ljubljana
- Slovenia
| | - Mateja Erdani Kreft
- Institute of Cell Biology
- Faculty of Medicine
- University of Ljubljana
- Ljubljana
- Slovenia
| | - Nataša Resnik
- Institute of Cell Biology
- Faculty of Medicine
- University of Ljubljana
- Ljubljana
- Slovenia
| | - Peter Veranič
- Institute of Cell Biology
- Faculty of Medicine
- University of Ljubljana
- Ljubljana
- Slovenia
| | - Pietro Franceschi
- Biostatistics and Data Management
- Research and Innovation Centre-Fondazione Edmund Mach
- S. Michele all'Adige
- Italy
| | - Kristina Sepčić
- Department of Biology
- Biotechnical Faculty
- University of Ljubljana
- Ljubljana
- Slovenia
| | - Graziano Guella
- Bioorganic Chemistry Laboratory
- Department of Physics
- University of Trento
- Trento
- Italy
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Lasič E, Višnjar T, Kreft ME. Properties of the Urothelium that Establish the Blood–Urine Barrier and Their Implications for Drug Delivery. Rev Physiol Biochem Pharmacol 2015; 168:1-29. [DOI: 10.1007/112_2015_22] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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