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Martincic M, Tobías-Rossell G. UV-Vis quantification of the iron content in iteratively steam and HCl purified single-walled carbon nanotubes. PLoS One 2024; 19:e0303359. [PMID: 38728321 PMCID: PMC11086872 DOI: 10.1371/journal.pone.0303359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Accepted: 04/24/2024] [Indexed: 05/12/2024] Open
Abstract
As-produced carbon nanotubes contain impurities which can dominate the properties of the material and are thus undesired. Herein we present a multi-step purification treatment that combines the use of steam and hydrochloric acid in an iterative manner. This allows the reduction of the iron content down to 0.2 wt. % in samples of single-walled carbon nanotubes (SWCNTs). Remarkably, Raman spectroscopy analysis reveals that this purification strategy does not introduce structural defects into the SWCNTs' backbone. To complete the study, we also report on a simplified approach for the quantitative assessment of iron using UV-Vis spectroscopy. The amount of metal in SWCNTs is assessed by dissolving in HCl the residue obtained after the complete combustion of the sample. This leads to the creation of hexaaquairon(III) chloride which allows the determination of the amount of iron, from the catalyst, by UV-Vis spectroscopy. The main advantage of the proposed strategy is that it does not require the use of additional complexing agents.
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Affiliation(s)
- Markus Martincic
- Institut de Ciència de Materiales de Barcelona (ICMAB-CSIC), Campus de la UAB, Bellaterra, Barcelona, Spain
| | - Gerard Tobías-Rossell
- Institut de Ciència de Materiales de Barcelona (ICMAB-CSIC), Campus de la UAB, Bellaterra, Barcelona, Spain
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2
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Yang J, Yan M, Wang Z, Zhang C, Guan M, Sun Z. Optical and MRI Multimodal Tracing of Stem Cells In Vivo. Mol Imaging 2023; 2023:4223485. [PMID: 38148836 PMCID: PMC10751174 DOI: 10.1155/2023/4223485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2023] [Revised: 11/01/2023] [Accepted: 12/01/2023] [Indexed: 12/28/2023] Open
Abstract
Stem cell therapy has shown great clinical potential in oncology, injury, inflammation, and cardiovascular disease. However, due to the technical limitations of the in vivo visualization of transplanted stem cells, the therapeutic mechanisms and biosafety of stem cells in vivo are poorly defined, which limits the speed of clinical translation. The commonly used methods for the in vivo tracing of stem cells currently include optical imaging, magnetic resonance imaging (MRI), and nuclear medicine imaging. However, nuclear medicine imaging involves radioactive materials, MRI has low resolution at the cellular level, and optical imaging has poor tissue penetration in vivo. It is difficult for a single imaging method to simultaneously achieve the high penetration, high resolution, and noninvasiveness needed for in vivo imaging. However, multimodal imaging combines the advantages of different imaging modalities to determine the fate of stem cells in vivo in a multidimensional way. This review provides an overview of various multimodal imaging technologies and labeling methods commonly used for tracing stem cells, including optical imaging, MRI, and the combination of the two, while explaining the principles involved, comparing the advantages and disadvantages of different combination schemes, and discussing the challenges and prospects of human stem cell tracking techniques.
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Affiliation(s)
- Jia Yang
- State Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, Yunnan 650500, China
- Yunnan Key Laboratory of Primate Biomedical Research, Kunming, Yunnan 650500, China
| | - Min Yan
- State Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, Yunnan 650500, China
- Yunnan Key Laboratory of Primate Biomedical Research, Kunming, Yunnan 650500, China
| | - Zhong Wang
- Affiliated Mental Health Center of Kunming Medical University, Kunming, Yunnan 650000, China
| | - Cong Zhang
- State Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, Yunnan 650500, China
- Yunnan Key Laboratory of Primate Biomedical Research, Kunming, Yunnan 650500, China
| | - Miao Guan
- Faculty of Life Science and Technology, Kunming University of Science and Technology, Kunming, Yunnan 650500, China
| | - Zhenglong Sun
- State Key Laboratory of Primate Biomedical Research, Institute of Primate Translational Medicine, Kunming University of Science and Technology, Kunming, Yunnan 650500, China
- Yunnan Key Laboratory of Primate Biomedical Research, Kunming, Yunnan 650500, China
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3
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Garrigós MM, Oliveira FA, Nucci MP, Mamani JB, Dias OFM, Rego GNA, Junqueira MS, Costa CJS, Silva LRR, Alves AH, Valle NME, Marti L, Gamarra LF. Bioluminescence Imaging and ICP-MS Associated with SPION as a Tool for Hematopoietic Stem and Progenitor Cells Homing and Engraftment Evaluation. Pharmaceutics 2023; 15:pharmaceutics15030828. [PMID: 36986690 PMCID: PMC10057125 DOI: 10.3390/pharmaceutics15030828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 02/21/2023] [Accepted: 02/28/2023] [Indexed: 03/08/2023] Open
Abstract
Bone marrow transplantation is a treatment for a variety of hematological and non-hematological diseases. For the transplant success, it is mandatory to have a thriving engraftment of transplanted cells, which directly depends on their homing. The present study proposes an alternative method to evaluate the homing and engraftment of hematopoietic stem cells using bioluminescence imaging and inductively coupled plasma mass spectrometry (ICP-MS) associated with superparamagnetic iron oxide nanoparticles. We have identified an enriched population of hematopoietic stem cells in the bone marrow following the administration of Fluorouracil (5-FU). Lately, the cell labeling with nanoparticles displayed the greatest internalization status when treated with 30 µg Fe/mL. The quantification by ICP-MS evaluate the stem cells homing by identifying 3.95 ± 0.37 µg Fe/mL in the control and 6.61 ± 0.84 µg Fe/mL in the bone marrow of transplanted animals. In addition, 2.14 ± 0.66 mg Fe/g in the spleen of the control group and 2.17 ± 0.59 mg Fe/g in the spleen of the experimental group was also measured. Moreover, the bioluminescence imaging provided the follow up on the hematopoietic stem cells behavior by monitoring their distribution by the bioluminescence signal. Lastly, the blood count enabled the monitoring of animal hematopoietic reconstitution and ensured the transplantation effectiveness.
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Affiliation(s)
| | | | - Mariana P. Nucci
- Hospital Israelita Albert Einstein, São Paulo 05652-000, SP, Brazil
- LIM44—Hospital das Clínicas da Faculdade Medicina da Universidade de São Paulo, São Paulo 05403-000, SP, Brazil
| | - Javier B. Mamani
- Hospital Israelita Albert Einstein, São Paulo 05652-000, SP, Brazil
| | | | | | - Mara S. Junqueira
- Center for Translational Research in Oncology, Cancer Institute of the State of Sao Paulo—ICESP, São Paulo 01246-000, SP, Brazil
| | | | | | - Arielly H. Alves
- Hospital Israelita Albert Einstein, São Paulo 05652-000, SP, Brazil
| | | | - Luciana Marti
- Hospital Israelita Albert Einstein, São Paulo 05652-000, SP, Brazil
| | - Lionel F. Gamarra
- Hospital Israelita Albert Einstein, São Paulo 05652-000, SP, Brazil
- Correspondence: ; Tel.: +55-11-2151-0243
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4
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Llenas M, Cuenca L, Santos C, Bdikin I, Gonçalves G, Tobías-Rossell G. Sustainable Synthesis of Highly Biocompatible 2D Boron Nitride Nanosheets. Biomedicines 2022; 10:biomedicines10123238. [PMID: 36551994 PMCID: PMC9775030 DOI: 10.3390/biomedicines10123238] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 12/07/2022] [Accepted: 12/08/2022] [Indexed: 12/15/2022] Open
Abstract
2D ultrafine nanomaterials today represent an emerging class of materials with very promising properties for a wide variety of applications. Biomedical fields have experienced important new achievements with technological breakthroughs obtained from 2D materials with singular properties. Boron nitride nanosheets are a novel 2D layered material comprised of a hexagonal boron nitride network (BN) with interesting intrinsic properties, including resistance to oxidation, extreme mechanical hardness, good thermal conductivity, photoluminescence, and chemical inertness. Here, we investigated different methodologies for the exfoliation of BN nanosheets (BNNs), using ball milling and ultrasound processing, the latter using both an ultrasound bath and tip sonication. The best results are obtained using tip sonication, which leads to the formation of few-layered nanosheets with a narrow size distribution. Importantly, it was observed that with the addition of pluronic acid F127 to the medium, there was a significant improvement in the BN nanosheets (BNNs) production yield. Moreover, the resultant BNNs present improved stability in an aqueous solution. Cytotoxicity studies performed with HeLa cells showed the importance of taking into account the possible interferences of the nanomaterial with the selected assay. The prepared BNNs coated with pluronic presented improved cytotoxicity at concentrations up to 200 μg mL-1 with more than 90% viability after 24 h of incubation. Confocal microscopy also showed high cell internalization of the nanomaterials and their preferential biodistribution in the cell cytoplasm.
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Affiliation(s)
- Marina Llenas
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus de la UAB, 08193 Bellaterra, Spain
| | - Lorenzo Cuenca
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus de la UAB, 08193 Bellaterra, Spain
| | - Carla Santos
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193 Aveiro, Portugal
- CQE—Centro de Química Estrutural, Instituto Superior Técnico, University of Lisbon, 1049-001 Lisbon, Portugal
| | - Igor Bdikin
- TEMA-Nanotechnology Research Group, Mechanical Engineering Department, University of Aveiro, 3810-193 Aveiro, Portugal
- Intelligent Systems Associate Laboratory (LASI), 3810-193 Aveiro, Portugal
| | - Gil Gonçalves
- TEMA-Nanotechnology Research Group, Mechanical Engineering Department, University of Aveiro, 3810-193 Aveiro, Portugal
- Intelligent Systems Associate Laboratory (LASI), 3810-193 Aveiro, Portugal
- Correspondence: (G.G.); (G.T.-R.)
| | - Gerard Tobías-Rossell
- Institut de Ciència de Materials de Barcelona (ICMAB-CSIC), Campus de la UAB, 08193 Bellaterra, Spain
- Correspondence: (G.G.); (G.T.-R.)
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Solé JG. Optical Nanoparticles for Biomedicine. Biomedicines 2022; 10:biomedicines10081892. [PMID: 36009439 PMCID: PMC9405649 DOI: 10.3390/biomedicines10081892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 08/01/2022] [Indexed: 11/17/2022] Open
Affiliation(s)
- José García Solé
- Nano-Big Group, Department of Materials Science, Faculty of Sciences, Universidad Autónoma de Madrid, 28049 Madrid, Spain
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Nucci MP, Oliveira FA, Ferreira JM, Pinto YO, Alves AH, Mamani JB, Nucci LP, Valle NME, Gamarra LF. Effect of Cell Therapy and Exercise Training in a Stroke Model, Considering the Cell Track by Molecular Image and Behavioral Analysis. Cells 2022; 11:cells11030485. [PMID: 35159294 PMCID: PMC8834410 DOI: 10.3390/cells11030485] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Revised: 01/27/2022] [Accepted: 01/28/2022] [Indexed: 12/12/2022] Open
Abstract
The goal of this study is to see how combining physical activity with cell treatment impacts functional recovery in a stroke model. Molecular imaging and multimodal nanoparticles assisted in cell tracking and longitudinal monitoring (MNP). The viability of mesenchymal stem cell (MSC) was determined using a 3-[4,5-dimethylthiazol-2-yl]-2,5 diphenyl tetrazolium bromide (MTT) assay and bioluminescent image (BLI) after lentiviral transduction and MNP labeling. At random, the animals were divided into 5 groups (control-G1, and experimental G2-G5). The photothrombotic stroke induction was confirmed by local blood perfusion reduction and Triphenyltetrazolium chloride (TTC), and MSC in the G3 and G5 groups were implanted after 24 h, with BLI and near-infrared fluorescence image (NIRF) tracking these cells at 28 h, 2, 7, 14, and 28 days. During a 28-day period, the G5 also conducted physical training, whereas the G4 simply did the training. At 0, 7, 14, and 28 days, the animals were functionally tested using a cylinder test and a spontaneous motor activity test. MNP internalization in MSC was confirmed using brightfield and fluorescence microscopy. In relation to G1 group, only 3% of cell viability reduced. The G2–G5 groups showed more than 69% of blood perfusion reduction. The G5 group performed better over time, with a progressive recovery of symmetry and an increase of fast vertical movements. Up to 7 days, BLI and NIRF followed MSC at the damaged site, demonstrating a signal rise that could be connected to cell proliferation at the injury site during the acute phase of stroke. Local MSC therapy mixed with physical activity resulted in better results in alleviating motor dysfunction, particularly during the acute period. When it comes to neurorehabilitation, this alternative therapy could be a suitable fit.
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Affiliation(s)
- Mariana P. Nucci
- Hospital Israelita Albert Einstein, São Paulo 05652-000, Brazil; (M.P.N.); (F.A.O.); (J.M.F.); (Y.O.P.); (A.H.A.); (J.B.M.); (N.M.E.V.)
- LIM44, Hospital das Clínicas da Faculdade Medicina da Universidade de São Paulo, São Paulo 05403-000, Brazil
| | - Fernando A. Oliveira
- Hospital Israelita Albert Einstein, São Paulo 05652-000, Brazil; (M.P.N.); (F.A.O.); (J.M.F.); (Y.O.P.); (A.H.A.); (J.B.M.); (N.M.E.V.)
| | - João M. Ferreira
- Hospital Israelita Albert Einstein, São Paulo 05652-000, Brazil; (M.P.N.); (F.A.O.); (J.M.F.); (Y.O.P.); (A.H.A.); (J.B.M.); (N.M.E.V.)
| | - Yolanda O. Pinto
- Hospital Israelita Albert Einstein, São Paulo 05652-000, Brazil; (M.P.N.); (F.A.O.); (J.M.F.); (Y.O.P.); (A.H.A.); (J.B.M.); (N.M.E.V.)
| | - Arielly H. Alves
- Hospital Israelita Albert Einstein, São Paulo 05652-000, Brazil; (M.P.N.); (F.A.O.); (J.M.F.); (Y.O.P.); (A.H.A.); (J.B.M.); (N.M.E.V.)
| | - Javier B. Mamani
- Hospital Israelita Albert Einstein, São Paulo 05652-000, Brazil; (M.P.N.); (F.A.O.); (J.M.F.); (Y.O.P.); (A.H.A.); (J.B.M.); (N.M.E.V.)
| | - Leopoldo P. Nucci
- Centro Universitário do Planalto Central, Brasília 72445-020, Brazil;
| | - Nicole M. E. Valle
- Hospital Israelita Albert Einstein, São Paulo 05652-000, Brazil; (M.P.N.); (F.A.O.); (J.M.F.); (Y.O.P.); (A.H.A.); (J.B.M.); (N.M.E.V.)
| | - Lionel F. Gamarra
- Hospital Israelita Albert Einstein, São Paulo 05652-000, Brazil; (M.P.N.); (F.A.O.); (J.M.F.); (Y.O.P.); (A.H.A.); (J.B.M.); (N.M.E.V.)
- Correspondence: ; Tel.: +55-11-2151-0243
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Mamani JB, Souza TKF, Nucci MP, Oliveira FA, Nucci LP, Alves AH, Rego GNA, Marti L, Gamarra LF. In Vitro Evaluation of Hyperthermia Magnetic Technique Indicating the Best Strategy for Internalization of Magnetic Nanoparticles Applied in Glioblastoma Tumor Cells. Pharmaceutics 2021; 13:1219. [PMID: 34452180 PMCID: PMC8399657 DOI: 10.3390/pharmaceutics13081219] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 08/04/2021] [Accepted: 08/04/2021] [Indexed: 11/16/2022] Open
Abstract
This in vitro study aims to evaluate the magnetic hyperthermia (MHT) technique and the best strategy for internalization of magnetic nanoparticles coated with aminosilane (SPIONAmine) in glioblastoma tumor cells. SPIONAmine of 50 and 100 nm were used for specific absorption rate (SAR) analysis, performing the MHT with intensities of 50, 150, and 300 Gauss and frequencies varying between 305 and 557 kHz. The internalization strategy was performed using 100, 200, and 300 µgFe/mL of SPIONAmine, with or without Poly-L-Lysine (PLL) and filter, and with or without static or dynamic magnet field. The cell viability was evaluated after determination of MHT best condition of SPIONAmine internalization. The maximum SAR values of SPIONAmine (50 nm) and SPIONAmine (100 nm) identified were 184.41 W/g and 337.83 W/g, respectively, using a frequency of 557 kHz and intensity of 300 Gauss (≈23.93 kA/m). The best internalization strategy was 100 µgFe/mL of SPIONAmine (100 nm) using PLL with filter and dynamic magnet field, submitted to MHT for 40 min at 44 °C. This condition displayed 70.0% decreased in cell viability by flow cytometry and 68.1% by BLI. We can conclude that our study is promising as an antitumor treatment, based on intra- and extracellular MHT effects. The optimization of the nanoparticles internalization process associated with their magnetic characteristics potentiates the extracellular acute and late intracellular effect of MHT achieving greater efficiency in the therapeutic process.
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Affiliation(s)
- Javier B. Mamani
- Hospital Israelita Albert Einstein, São Paulo 05652-000, SP, Brazil; (J.B.M.); (T.K.F.S.); (M.P.N.); (F.A.O.); (A.H.A.); (G.N.A.R.); (L.M.)
| | - Taylla K. F. Souza
- Hospital Israelita Albert Einstein, São Paulo 05652-000, SP, Brazil; (J.B.M.); (T.K.F.S.); (M.P.N.); (F.A.O.); (A.H.A.); (G.N.A.R.); (L.M.)
| | - Mariana P. Nucci
- Hospital Israelita Albert Einstein, São Paulo 05652-000, SP, Brazil; (J.B.M.); (T.K.F.S.); (M.P.N.); (F.A.O.); (A.H.A.); (G.N.A.R.); (L.M.)
- LIM44-Hospital das Clínicas da Faculdade Medicina da Universidade de São Paulo, São Paulo 05403-000, SP, Brazil
| | - Fernando A. Oliveira
- Hospital Israelita Albert Einstein, São Paulo 05652-000, SP, Brazil; (J.B.M.); (T.K.F.S.); (M.P.N.); (F.A.O.); (A.H.A.); (G.N.A.R.); (L.M.)
| | - Leopoldo P. Nucci
- Centro Universitário do Planalto Central, Brasília 72445-020, DF, Brazil;
| | - Arielly H. Alves
- Hospital Israelita Albert Einstein, São Paulo 05652-000, SP, Brazil; (J.B.M.); (T.K.F.S.); (M.P.N.); (F.A.O.); (A.H.A.); (G.N.A.R.); (L.M.)
| | - Gabriel N. A. Rego
- Hospital Israelita Albert Einstein, São Paulo 05652-000, SP, Brazil; (J.B.M.); (T.K.F.S.); (M.P.N.); (F.A.O.); (A.H.A.); (G.N.A.R.); (L.M.)
| | - Luciana Marti
- Hospital Israelita Albert Einstein, São Paulo 05652-000, SP, Brazil; (J.B.M.); (T.K.F.S.); (M.P.N.); (F.A.O.); (A.H.A.); (G.N.A.R.); (L.M.)
| | - Lionel F. Gamarra
- Hospital Israelita Albert Einstein, São Paulo 05652-000, SP, Brazil; (J.B.M.); (T.K.F.S.); (M.P.N.); (F.A.O.); (A.H.A.); (G.N.A.R.); (L.M.)
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