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de Carvalho LAEB, Cinque G, de Carvalho ALMB, Marques J, Frogley MD, Vondracek H, Marques MPM. Synchrotron nano-FTIR spectroscopy for probing anticancer drugs at subcellular scale. Sci Rep 2024; 14:17166. [PMID: 39060284 PMCID: PMC11282259 DOI: 10.1038/s41598-024-67386-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2024] [Accepted: 07/10/2024] [Indexed: 07/28/2024] Open
Abstract
The cellular response to cisplatin was assessed in human osteosarcoma cells, using synchrotron-based (SR) Fourier Transform InfraRed nanospectroscopy (nano-FTIR) at the MIRIAM beamline B22 of Diamond Light Source (UK). This label-free mapping method delivered simultaneous morphological and biochemical information on a subcellular level (i.e. 100 s nanometer or better). Based on specific spectral biomarkers, the main biochemical constituents affected by the drug were identified at distinct locations within the cell´s inner body. Cisplatin was shown to have a noteworthy effect on proteins, mostly within the cytoplasm. A clear drug impact on cellular lipids was also observed. Within current literature on s-SNOM, this nanospectroscopy work represents a first successful application in life sciences providing full fingerprint nano-FTIR spectra across intact human cancer cells.
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Affiliation(s)
| | - Gianfelice Cinque
- Diamond Light Source, Harwell Science and Innovation Campus, Chilton - Didcot, OX11 0DE, Oxfordshire, UK.
- Department of Engineering Science, University of Oxford, Oxford, OX1 3PJ, UK.
| | | | - Joana Marques
- Department of Chemistry, Química-Física Molecular, University of Coimbra, 3004-535, Coimbra, Portugal
| | - Mark D Frogley
- Diamond Light Source, Harwell Science and Innovation Campus, Chilton - Didcot, OX11 0DE, Oxfordshire, UK
| | - Hendrik Vondracek
- Diamond Light Source, Harwell Science and Innovation Campus, Chilton - Didcot, OX11 0DE, Oxfordshire, UK
| | - Maria Paula M Marques
- Department of Chemistry, Química-Física Molecular, University of Coimbra, 3004-535, Coimbra, Portugal
- Department of Life Sciences, University of Coimbra, 3000-456, Coimbra, Portugal
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2
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Marques MPM, de Carvalho ALMB, Martins CB, Silva JD, Sarter M, García Sakai V, Stewart JR, de Carvalho LAEB. Cellular dynamics as a marker of normal-to-cancer transition in human cells. Sci Rep 2023; 13:21079. [PMID: 38030663 PMCID: PMC10687084 DOI: 10.1038/s41598-023-47649-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 11/16/2023] [Indexed: 12/01/2023] Open
Abstract
Normal-to-cancer (NTC) transition is known to be closely associated to cell´s biomechanical properties which are dependent on the dynamics of the intracellular medium. This study probes different human cancer cells (breast, prostate and lung), concomitantly to their healthy counterparts, aiming at characterising the dynamical profile of water in distinct cellular locations, for each type of cell, and how it changes between normal and cancer states. An increased plasticity of the cytomatrix is observed upon normal-to-malignant transformation, the lung carcinoma cells displaying the highest flexibility followed by prostate and breast cancers. Also, lung cells show a distinct behaviour relative to breast and prostate, with a higher influence from hydration water motions and localised fast rotations upon NTC transformation. Quasielastic neutron scattering techniques allowed to accurately distinguish the different dynamical processes taking place within these highly heterogeneous cellular systems. The results thus obtained suggest that intracellular water dynamics may be regarded as a specific reporter of the cellular conditions-either healthy or malignant.
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Affiliation(s)
- M P M Marques
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535, Coimbra, Portugal
- Department of Life Sciences, University of Coimbra, 3000-456, Coimbra, Portugal
| | - A L M Batista de Carvalho
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535, Coimbra, Portugal.
| | - C B Martins
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535, Coimbra, Portugal
- Department of Life Sciences, University of Coimbra, 3000-456, Coimbra, Portugal
| | - J D Silva
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535, Coimbra, Portugal
- Department of Life Sciences, University of Coimbra, 3000-456, Coimbra, Portugal
| | - M Sarter
- STFC Rutherford Appleton Laboratory, ISIS Facility, Chilton, Didcot, OX11 0QX, UK
| | - V García Sakai
- STFC Rutherford Appleton Laboratory, ISIS Facility, Chilton, Didcot, OX11 0QX, UK
| | - J R Stewart
- STFC Rutherford Appleton Laboratory, ISIS Facility, Chilton, Didcot, OX11 0QX, UK
| | - L A E Batista de Carvalho
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535, Coimbra, Portugal
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Kerch G. Nanocomposite Hydrogels and Extracellular Matrix-Advantages and Associated Risks. Gels 2023; 9:754. [PMID: 37754435 PMCID: PMC10530377 DOI: 10.3390/gels9090754] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 09/08/2023] [Accepted: 09/09/2023] [Indexed: 09/28/2023] Open
Abstract
Hydrogels can be considered as mimics of the extracellular matrix (ECM). Through integrins, the cytoskeleton is connected to the ECM, and cytoskeleton tension depends on ECM stiffness. A number of age-related diseases depend on cellular processes related to cytoskeleton function. Some examples of cancer initiation and progression and heart disease in relation to ECM stiffness have been analyzed. The incorporation of rigid particles into the ECM can increase ECM stiffness and promote the formation of internal residual stresses. Water migration, changes in water binding energy to biomactomolecules, and changes in the state of water from tightly bound water to free and loosely bound water lead to changes in the stiffness of the ECM. Cardiac tissue engineering, ECM stiffness and cancer, the equivalence of ECM stiffness, oxidative stress, inflammation, multi-layer polyelectrolyte complex hydrogels and bioprinting, residual internal stresses, viscoelastic hydrogels, hydrogel nanocomposites, and the effect of water have been reported. Special attention has been paid to the role of bound water and internal stresses in ECM stiffness. The risks related to rigid particle incorporation into the ECM have been discussed. The potential effect of polyphenols, chitosan, and chitosan oligosaccharide on ECM stiffness and the potential for anti-TNF-α and anti-NF-κB therapies have been discussed.
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Affiliation(s)
- Garry Kerch
- Faculty of Materials Science and Applied Chemistry, Riga Technical University, P. Valdena 3, 1048 Riga, Latvia
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4
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Silva JD, Marques J, Santos IP, Batista de Carvalho ALM, Martins CB, Laginha RC, Batista de Carvalho LAE, Marques MPM. A Non-Conventional Platinum Drug against a Non-Small Cell Lung Cancer Line. Molecules 2023; 28:molecules28041698. [PMID: 36838683 PMCID: PMC9964417 DOI: 10.3390/molecules28041698] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2023] [Revised: 02/06/2023] [Accepted: 02/08/2023] [Indexed: 02/12/2023] Open
Abstract
A dinuclear Pt(II) complex with putrescine as bridging polyamine ligand ([Pt2Put2(NH3)4]Cl4) was synthesized and assessed as to its potential anticancer activity against a human non-small cell lung cancer line (A549), as well as towards non-cancer cells (BEAS-2B). This effect was evaluated through in vitro cytotoxicity assays (MTT and SRB) coupled to microFTIR and microRaman spectroscopies, the former delivering information on growth-inhibiting and cytotoxic abilities while the latter provided very specific information on the metabolic impact of the metal agent (at the sub-cellular level). Regarding cancer cells, a major impact of [Pt2Put2(NH3)4]Cl4 was evidenced on cellular proteins and lipids, as compared to DNA, particularly via the Amide I and Amide II signals. The effect of the chelate on non-malignant cells was lower than on malignant ones, evidencing a promising low toxicity towards healthy cells.
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Affiliation(s)
- Jéssica D. Silva
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
| | - Joana Marques
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
| | - Inês P. Santos
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
| | | | - Clara B. Martins
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
| | - Raquel C. Laginha
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
| | - Luís A. E. Batista de Carvalho
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
- Correspondence: ; Tel.: +351-239-854-462
| | - Maria Paula M. Marques
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
- Department of Life Sciences, University of Coimbra, 3000-456 Coimbra, Portugal
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5
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Exploring the Limits of Biological Complexity Amenable to Studies by Incoherent Neutron Spectroscopy. LIFE (BASEL, SWITZERLAND) 2022; 12:life12081219. [PMID: 36013398 PMCID: PMC9410259 DOI: 10.3390/life12081219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 08/06/2022] [Accepted: 08/09/2022] [Indexed: 11/16/2022]
Abstract
The wavelengths of neutrons available at neutron scattering facilities are comparable with intra- and inter-molecular distances, while their energies are comparable with molecular vibrational energies, making such neutrons highly suitable for studies of molecular-level dynamics. The unmistakable trend in neutron spectroscopy has been towards measurements of systems of greater complexity. Several decades of studies of dynamics using neutron scattering have witnessed a progression from measurements of solids to liquids to protein complexes and biomembranes, which may exhibit properties characteristic of both solids and liquids. Over the last two decades, the frontier of complexity amenable to neutron spectroscopy studies has reached the level of cells. Considering this a baseline for neutron spectroscopy of systems of the utmost biological complexity, we briefly review what has been learned to date from neutron scattering studies at the cellular level and then discuss in more detail the recent strides into neutron spectroscopy of tissues and whole multicellular organisms.
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Marques MPM, Santos IP, Batista de Carvalho ALM, Mamede AP, Martins CB, Figueiredo P, Sarter M, Sakai VG, Batista de Carvalho LAE. Water dynamics in human cancer and non-cancer tissues. Phys Chem Chem Phys 2022; 24:15406-15415. [PMID: 35704895 DOI: 10.1039/d2cp00621a] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Normal-to-malignant transformation is a poorly understood process associated with cellular biomechanical properties. These are strongly dependent on the dynamical behaviour of water, known to play a fundamental role in normal cellular activity and in the maintenance of the three-dimensional architecture of the tissue and the functional state of biopolymers. In this study, quasi-elastic neutron scattering was used to probe the dynamical behaviour of water in human cancer specimens and their respective surrounding normal tissue from breast and tongue, as an innovative approach for identifying particular features of malignancy. This methodology has been successfully used by the authors in human cells and was the first study of human tissues by neutron scattering techniques. A larger flexibility was observed for breast versus tongue tissues. Additionally, different dynamics were found for malignant and non-malignant specimens, depending on the tissue: higher plasticity for breast invasive cancer versus the normal, and an opposite effect for tongue. The data were interpreted in the light of two different water populations within the samples: one displaying bulk-like dynamics (extracellular and intracellular/cytoplasmic) and another with constrained flexibility (extracellular/interstitial and intracellular/hydration layers).
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Affiliation(s)
- M P M Marques
- University of Coimbra, Molecular Physical-Chemistry R&D Unit, Department of Chemistry, 3004-535 Coimbra, Portugal. .,University of Coimbra, Department of Life Sciences, 3000-456 Coimbra, Portugal
| | - I P Santos
- University of Coimbra, Molecular Physical-Chemistry R&D Unit, Department of Chemistry, 3004-535 Coimbra, Portugal.
| | - A L M Batista de Carvalho
- University of Coimbra, Molecular Physical-Chemistry R&D Unit, Department of Chemistry, 3004-535 Coimbra, Portugal.
| | - A P Mamede
- University of Coimbra, Molecular Physical-Chemistry R&D Unit, Department of Chemistry, 3004-535 Coimbra, Portugal.
| | - C B Martins
- University of Coimbra, Molecular Physical-Chemistry R&D Unit, Department of Chemistry, 3004-535 Coimbra, Portugal.
| | - P Figueiredo
- Oncology Institute of Coimbra Francisco Gentil, 3000-075 Coimbra, Portugal
| | - M Sarter
- ISIS Neutron and Muon Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX, UK
| | - V García Sakai
- ISIS Neutron and Muon Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot, OX11 0QX, UK
| | - L A E Batista de Carvalho
- University of Coimbra, Molecular Physical-Chemistry R&D Unit, Department of Chemistry, 3004-535 Coimbra, Portugal.
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Martins ML, Bordallo HN, Mamontov E. Water Dynamics in Cancer Cells: Lessons from Quasielastic Neutron Scattering. Medicina (B Aires) 2022; 58:medicina58050654. [PMID: 35630072 PMCID: PMC9145030 DOI: 10.3390/medicina58050654] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Revised: 05/04/2022] [Accepted: 05/10/2022] [Indexed: 12/14/2022] Open
Abstract
The severity of the cancer statistics around the globe and the complexity involving the behavior of cancer cells inevitably calls for contributions from multidisciplinary areas of research. As such, materials science became a powerful asset to support biological research in comprehending the macro and microscopic behavior of cancer cells and untangling factors that may contribute to their progression or remission. The contributions of cellular water dynamics in this process have always been debated and, in recent years, experimental works performed with Quasielastic neutron scattering (QENS) brought new perspectives to these discussions. In this review, we address these works and highlight the value of QENS in comprehending the role played by water molecules in tumor cells and their response to external agents, particularly chemotherapy drugs. In addition, this paper provides an overview of QENS intended for scientists with different backgrounds and comments on the possibilities to be explored with the next-generation spectrometers under construction.
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Affiliation(s)
- Murillo L. Martins
- Oak Ridge National Laboratory, Neutron Scattering Division, Oak Ridge, TN 37831, USA
- Correspondence: (M.L.M.); (E.M.)
| | - Heloisa N. Bordallo
- Niels Bohr Institute, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark;
| | - Eugene Mamontov
- Oak Ridge National Laboratory, Neutron Scattering Division, Oak Ridge, TN 37831, USA
- Correspondence: (M.L.M.); (E.M.)
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Pd2Spermine Complex Shows Cancer Selectivity and Efficacy to Inhibit Growth of Triple-Negative Breast Tumors in Mice. Biomedicines 2022; 10:biomedicines10020210. [PMID: 35203420 PMCID: PMC8869242 DOI: 10.3390/biomedicines10020210] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 01/05/2022] [Accepted: 01/14/2022] [Indexed: 12/30/2022] Open
Abstract
Pd2Spm is a dinuclear palladium(II)-spermine chelate with promising anticancer properties against triple-negative breast cancer (TNBC), a breast carcinoma subset with poor prognosis and limited treatment options. The present study evaluated the in vitro and in vivo anticancer effects of Pd2Spm compared to the reference metal-based drug cisplatin. Triple-negative breast cancer MDA-MB-231 cells, non-cancerous MCF-12A breast cells and chorioallantoic membrane (CAM) assay were used for antiproliferative, antimigratory and antiangiogenic studies. For an in vivo efficacy study, female CBA nude mice with subcutaneously implanted MDA-MB-231 breast tumors were treated with Pd2Spm (5 mg/kg/day) or cisplatin (2 mg/kg/day) administered intraperitoneally during 5 consecutive days. Promising selective antiproliferative activity of Pd2Spm was observed in MDA-MB-231 cells (IC50 values of 7.3–8.3 µM), with at least 10-fold lower activity in MCF-12A cells (IC50 values of 89.5–228.9 µM). Pd2Spm inhibited the migration of MDA-MB-231 cells, suppressed angiogenesis in CAM and decreased VEGF secretion from MDA-MB-231 cells with similar potency as cisplatin. Pd2Spm-treated mice showed a significant reduction in tumor growth progression, and tumors evidenced a reduction in the Ki-67 proliferation index and number of mitotic figures, as well as increased DNA damage, similar to cisplatin-treated animals. Encouragingly, systemic toxicity (hematotoxicity and weight loss) observed in cisplatin-treated animals was not observed in Pd2Spm-treated mice. The present study reports, for the first time, promising cancer selectivity, in vivo antitumor activity towards TNBC and a low systemic toxicity of Pd2Spm. Thus, this agent may be viewed as a promising Pd(II) drug candidate for the treatment of this type of low-prognosis neoplasia.
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Zaccai G, Madern D, Franzetti B. Intracellular molecular dynamics studied by neutron scattering. EPJ WEB OF CONFERENCES 2022. [DOI: 10.1051/epjconf/202227201009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Incoherent neutron scattering experiments have produced important insights into intracellular molecular dynamics in vivo. Selected results highlight the role of water dynamics in cancer and brain cells, as well as cellular adaptation through the evolution of appropriate molecular dynamics, in order to respond to environmental challenges.
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10
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Li D, Zhu Z, Sun DW. Quantification of hydrogen bonding strength of water in saccharide aqueous solutions by confocal Raman microscopy. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.117498] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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11
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Morón M. Protein hydration shell formation: Dynamics of water in biological systems exhibiting nanoscopic cavities. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116584] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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12
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Martins AS, Batista de Carvalho ALM, Marques MPM, Gil AM. Response of Osteosarcoma Cell Metabolism to Platinum and Palladium Chelates as Potential New Drugs. Molecules 2021; 26:4805. [PMID: 34443394 PMCID: PMC8401043 DOI: 10.3390/molecules26164805] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 08/03/2021] [Accepted: 08/04/2021] [Indexed: 12/13/2022] Open
Abstract
This paper reports the first metabolomics study of the impact of new chelates Pt2Spm and Pd2Spm (Spm = Spermine) on human osteosarcoma cellular metabolism, compared to the conventional platinum drugs cisplatin and oxaliplatin, in order to investigate the effects of different metal centers and ligands. Nuclear Magnetic Resonance metabolomics was used to identify meaningful metabolite variations in polar cell extracts collected during exposure to each of the four chelates. Cisplatin and oxaliplatin induced similar metabolic fingerprints of changing metabolite levels (affecting many amino acids, organic acids, nucleotides, choline compounds and other compounds), thus suggesting similar mechanisms of action. For these platinum drugs, a consistent uptake of amino acids is noted, along with an increase in nucleotides and derivatives, namely involved in glycosylation pathways. The Spm chelates elicit a markedly distinct metabolic signature, where inverse features are observed particularly for amino acids and nucleotides. Furthermore, Pd2Spm prompts a weaker response from osteosarcoma cells as compared to its platinum analogue, which is interesting as the palladium chelate exhibits higher cytotoxicity. Putative suggestions are discussed as to the affected cellular pathways and the origins of the distinct responses. This work demonstrates the value of untargeted metabolomics in measuring the response of cancer cells to either conventional or potential new drugs, seeking further understanding (or possible markers) of drug performance at the molecular level.
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Affiliation(s)
- Ana S. Martins
- CICECO—Aveiro Institute of Materials (CICECO/UA), Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal;
- Unidade de I&D Química-Física Molecular, Department of Chemistry, University of Coimbra, Rua Larga, 300-535 Coimbra, Portugal;
| | - Ana L. M. Batista de Carvalho
- Unidade de I&D Química-Física Molecular, Department of Chemistry, University of Coimbra, Rua Larga, 300-535 Coimbra, Portugal;
| | - Maria P. M. Marques
- Unidade de I&D Química-Física Molecular, Department of Chemistry, University of Coimbra, Rua Larga, 300-535 Coimbra, Portugal;
- Department of Life Sciences, Faculty of Science and Technology, University of Coimbra, Calçada Martim de Freitas, 3000-456 Coimbra, Portugal
| | - Ana M. Gil
- CICECO—Aveiro Institute of Materials (CICECO/UA), Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal;
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Batista de Carvalho LAE, Mamede AP, Batista de Carvalho ALM, Marques J, Cinque G, Rudić S, Marques MPM. Metallodrug-protein interaction probed by synchrotron terahertz and neutron scattering spectroscopy. Biophys J 2021; 120:3070-3078. [PMID: 34214537 PMCID: PMC8390959 DOI: 10.1016/j.bpj.2021.06.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 05/20/2021] [Accepted: 06/08/2021] [Indexed: 11/30/2022] Open
Abstract
This experimental work applied coherent synchrotron-radiation terahertz spectroscopy and inelastic neutron scattering to address two processes directly associated with the mode of action of metal-based anticancer agents that can severely undermine chemotherapeutic treatment: drug binding to human serum albumin, occurring during intravenous drug transport, and intracellular coordination to thiol-containing biomolecules (such as metallothioneins) associated with acquired drug resistance. Cisplatin and two dinuclear platinum (Pt)- and palladium (Pd)-polyamine agents developed by this research group, which have yielded promising results toward some types of human cancers, were investigated. Complementary synchrotron-radiation-terahertz and inelastic neutron scattering data revealed protein metalation, through S- and N-donor ligands from cysteine, methionine, and histidine residues. A clear impact of the Pt and Pd agents was evidenced, drug binding to albumin and metallothionein having been responsible for significant changes in the overall protein conformation, as well as for an increased flexibility and possible aggregation.
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Affiliation(s)
| | - Adriana Pereira Mamede
- Molecular Physical Chemistry R&D Unit, Department of Chemistry, University of Coimbra, Coimbra, Portugal
| | | | - Joana Marques
- Molecular Physical Chemistry R&D Unit, Department of Chemistry, University of Coimbra, Coimbra, Portugal
| | - Gianfelice Cinque
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot, Oxfordshire, United Kingdom
| | - Svemir Rudić
- ISIS Facility, STFC Rutherford Appleton Laboratory, Didcot, Oxfordshire, United Kingdom
| | - Maria Paula Matos Marques
- Molecular Physical Chemistry R&D Unit, Department of Chemistry, University of Coimbra, Coimbra, Portugal; Department of Life Sciences, University of Coimbra, Coimbra, Portugal
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14
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Vojtek M, Gonçalves-Monteiro S, Pinto E, Kalivodová S, Almeida A, Marques MPM, Batista de Carvalho ALM, Martins CB, Mota-Filipe H, Ferreira IMPLVO, Diniz C. Preclinical Pharmacokinetics and Biodistribution of Anticancer Dinuclear Palladium(II)-Spermine Complex (Pd 2Spm) in Mice. Pharmaceuticals (Basel) 2021; 14:ph14020173. [PMID: 33672377 PMCID: PMC7926495 DOI: 10.3390/ph14020173] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Revised: 02/13/2021] [Accepted: 02/17/2021] [Indexed: 02/07/2023] Open
Abstract
Palladium-based compounds are regarded as potential analogs to platinum anticancer drugs with improved properties. The present study assessed the pharmacokinetics and biodistribution of a dinuclear palladium(II)-spermine chelate (Pd2Spm), which has previously been shown to possess promising in vitro activity against several therapy-resistant cancers. Using inductively coupled plasma-mass spectrometry, the kinetic profiles of palladium/platinum in serum, serum ultrafiltrate and tissues (kidney, liver, brain, heart, lungs, ovaries, adipose tissue and mammary glands) were studied in healthy female Balb/c mice after a single intraperitoneal bolus injection of Pd2Spm (3 mg/kg bw) or cisplatin (3.5 mg/kg bw) between 0.5 and 48 h post-injection. Palladium in serum exhibited biphasic kinetics with a terminal half-life of 20.7 h, while the free palladium in serum ultrafiltrate showed a higher terminal half-life than platinum (35.5 versus 31.5 h). Palladium was distributed throughout most of the tissues except for the brain, with the highest values in the kidney, followed by the liver, lungs, ovaries, adipose tissue and mammary glands. The in vitro cellular accumulation was also evaluated in breast cancer cells, evidencing a passive diffusion as a mechanism of Pd2Spm’s cellular entry. This study reports, for the first time, the favorable pharmacokinetics and biodistribution of Pd2Spm, which may become a promising pharmacological agent for cancer treatment.
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Affiliation(s)
- Martin Vojtek
- LAQV/REQUIMTE, Laboratory of Pharmacology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal; (S.G.-M.); (S.K.)
- Correspondence: (M.V.); (C.D.)
| | - Salomé Gonçalves-Monteiro
- LAQV/REQUIMTE, Laboratory of Pharmacology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal; (S.G.-M.); (S.K.)
| | - Edgar Pinto
- LAQV/REQUIMTE, Laboratory of Bromatology and Hydrology, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal; (E.P.); (I.M.P.L.V.O.F.)
- Department of Environmental Health, School of Health, P.Porto, CISA/Research Center in Environment and Health, 4200-072 Porto, Portugal
| | - Sára Kalivodová
- LAQV/REQUIMTE, Laboratory of Pharmacology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal; (S.G.-M.); (S.K.)
| | - Agostinho Almeida
- LAQV/REQUIMTE, Laboratory of Applied Chemistry, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal;
| | - Maria P. M. Marques
- “Molecular Physical-Chemistry” R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal; (M.P.M.M.); (A.L.M.B.d.C.); (C.B.M.)
- Department of Life Sciences, University of Coimbra, 3000-456 Coimbra, Portugal
| | - Ana L. M. Batista de Carvalho
- “Molecular Physical-Chemistry” R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal; (M.P.M.M.); (A.L.M.B.d.C.); (C.B.M.)
| | - Clara B. Martins
- “Molecular Physical-Chemistry” R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal; (M.P.M.M.); (A.L.M.B.d.C.); (C.B.M.)
| | - Helder Mota-Filipe
- iMed.ULisboa, Faculty of Pharmacy, University of Lisbon, 1649-003 Lisbon, Portugal;
| | - Isabel M. P. L. V. O. Ferreira
- LAQV/REQUIMTE, Laboratory of Bromatology and Hydrology, Department of Chemical Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal; (E.P.); (I.M.P.L.V.O.F.)
| | - Carmen Diniz
- LAQV/REQUIMTE, Laboratory of Pharmacology, Department of Drug Sciences, Faculty of Pharmacy, University of Porto, 4050-313 Porto, Portugal; (S.G.-M.); (S.K.)
- Correspondence: (M.V.); (C.D.)
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15
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Lang X, Welsher K. Mapping solvation heterogeneity in live cells by hyperspectral stimulated Raman scattering microscopy. J Chem Phys 2020; 152:174201. [PMID: 32384848 DOI: 10.1063/1.5141422] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Water provides a dynamic matrix in which all biochemical processes occur in living organisms. The structure and dynamics of intracellular water constitute the cornerstone for understanding all aspects of cellular function. Fundamentally, direct visualization of subcellular solvation heterogeneity is essential but remains challenging with commonly used nuclear magnetic resonance methods due to poor spatial resolution. To explore this question, we demonstrate a vibrational-shift imaging approach by combining the spectral-focusing hyperspectral stimulated Raman scattering technique with an environmentally sensitive nitrile probe. The sensing ability of a near-infrared nitrile-containing molecule is validated in the solution phase, microscopic droplets, and cellular environments. Finally, we quantitatively measure the subcellular solvation variance between the cytoplasm (29.5%, S.E. 1.8%) and the nucleus (57.3%, S.E. 1.0%), which is in good agreement with previous studies. This work sheds light on heterogeneous solvation in live systems using coherent Raman microscopy and opens up new avenues to explore environmental variance in complex systems with high spatiotemporal resolution.
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Affiliation(s)
- Xiaoqi Lang
- Department of Chemistry, Duke University, Durham, North Carolina 27708, USA
| | - Kevin Welsher
- Department of Chemistry, Duke University, Durham, North Carolina 27708, USA
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16
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Paternò GM, Bondelli G, Sakai VG, Sesti V, Bertarelli C, Lanzani G. The Effect of an Intramembrane Light-Actuator on the Dynamics of Phospholipids in Model Membranes and Intact Cells. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2020; 36:11517-11527. [PMID: 32903010 DOI: 10.1021/acs.langmuir.0c01846] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The noncovalent intercalation of amphiphilic molecules in the lipid membrane can be exploited to modulate efficiently the physical status of the membrane. Such effects are largely employed in a range of applications, spanning from drug-delivery to therapeutics. In this context, we have very recently developed an intramembrane photo-actuator consisting of an amphiphilic azobenzene molecule, namely ZIAPIN2. The selective photo-isomerization occurring in the lipid bilayer induces a photo-triggered change in the membrane thickness and capacitance, eventually permitting to evoke light-induced neuronal firing both in vitro and in vivo. Here, we present a study on the dynamical perturbation in the lipid membrane caused by ZIAPIN2 and its vehicle solvent, dimethyl sulfoxide. Effects on the dynamics occurring in the picosecond time range and at the molecular level are probed using quasi-elastic neutron scattering. By coupling experiments carried out both on model membranes and intact cells, we found that DMSO leads to a general retardation of the dynamics within a more dynamically ordered landscape, a result that we attribute to the dehydration at the interface. On the other hand, ZIAPIN2 partitioning produces a general softening of the bilayer owing to its interaction with the lipids. These data are in agreement with our recent studies, which indicate that the efficacy of ZIAPIN2 in triggering cellular signalling stems from its ability to mechanically perturb the bilayer as a whole, by forming light-sensitive membrane spanning dimers.
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Affiliation(s)
- Giuseppe M Paternò
- Center for Nano Science and Technology, Istituto Italiano di Tecnologia, Via Pascoli 10, 20133 Milano, Italy
| | - Gaia Bondelli
- Center for Nano Science and Technology, Istituto Italiano di Tecnologia, Via Pascoli 10, 20133 Milano, Italy
| | - Victoria Garcia Sakai
- ISIS Pulsed Neutron and Muon Source, Science and Technology Facilities Council, Rutherford Appleton Laboratory, Harwell Science and Innovation Campus, Didcot OX11 0QX, U.K
| | - Valentina Sesti
- Dipartimento di Chimica, Materiali e Ingegneria Chimica ″Giulio Natta″, Politecnico di Milano, Piazza L. da Vinci 32, 20133 Milano, Italy
| | - Chiara Bertarelli
- Dipartimento di Chimica, Materiali e Ingegneria Chimica ″Giulio Natta″, Politecnico di Milano, Piazza L. da Vinci 32, 20133 Milano, Italy
| | - Guglielmo Lanzani
- Center for Nano Science and Technology, Istituto Italiano di Tecnologia, Via Pascoli 10, 20133 Milano, Italy
- Dipartimento di Fisica, Politecnico di Milano, Piazza L. da Vinci 32, 20133 Milano, Italy
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17
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Marques MPM, Batista de Carvalho ALM, Mamede AP, Dopplapudi A, García Sakai V, Batista de Carvalho LAE. Role of intracellular water in the normal-to-cancer transition in human cells-insights from quasi-elastic neutron scattering. STRUCTURAL DYNAMICS (MELVILLE, N.Y.) 2020; 7:054701. [PMID: 32923512 PMCID: PMC7481011 DOI: 10.1063/4.0000021] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Accepted: 08/03/2020] [Indexed: 06/11/2023]
Abstract
The transition from normal to malignant state in human cells is still a poorly understood process. Changes in the dynamical activity of intracellular water between healthy and cancerous human cells were probed as an innovative approach for unveiling particular features of malignancy and identifying specific reporters of cancer. Androgen-unresponsive prostate and triple-negative breast carcinomas were studied as well as osteosarcoma, using the technique of quasi-elastic neutron scattering. The cancerous cells showed a considerably higher plasticity relative to their healthy counterparts, this being more significant for the mammary adenocarcinoma. Also, the data evidence that the prostate cancer cells display the highest plasticity when compared to triple-negative mammary cancer and osteosarcoma, the latter being remarkably less flexible. Furthermore, the results suggest differences between the flexibility of different types of intracellular water molecules in normal and cancerous cells, as well as the number of molecules involved in the different modes of motion. The dynamics of hydration water molecules remain virtually unaffected when going from healthy to cancer cells, while cytoplasmic water (particularly the rotational motions) undergoes significant changes upon normal-to-cancer transition. The results obtained along this study can potentially help to understand the variations in cellular dynamics underlying carcinogenesis and tumor metastasis, with an emphasis on intracellular water.
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Affiliation(s)
| | - A. L. M. Batista de Carvalho
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
| | - A. P. Mamede
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
| | - A. Dopplapudi
- ISIS Facility, STFC Rutherford Appleton Laboratory, Chilton, Didcot OX11 0QX, United Kingdom
| | - V. García Sakai
- Department of Life Sciences, University of Coimbra, 3000-456 Coimbra, Portugal
| | - L. A. E. Batista de Carvalho
- Molecular Physical-Chemistry R&D Unit, Department of Chemistry, University of Coimbra, 3004-535 Coimbra, Portugal
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18
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Martins ML, Bordallo HN, Arrese-Igor S, Alegría A, Colmenero de Leon J. Effect of Paclitaxel in the Water Dynamics of MCF-7 Breast Cancer Cells Revealed by Dielectric Spectroscopy. ACS OMEGA 2020; 5:18602-18607. [PMID: 32775862 PMCID: PMC7407532 DOI: 10.1021/acsomega.0c00897] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 06/25/2020] [Indexed: 06/11/2023]
Abstract
Using dielectric spectroscopy experiments performed at multiple temperatures and frequency ranges, we demonstrate how the chemotherapy drug paclitaxel changes the dynamic properties of water in a breast cancer cell line (MCF-7). From the measured data, we present evidence that treatment with paclitaxel leads to a slight increase in activation energy in a relaxation related to bulk-like water. More importantly, we also observe that paclitaxel changes the constraining imposed by the biological interfaces on hydration water, whose single-particle dynamics becomes slower and with higher activation energy. These variations are only observable after freezing the dynamics from other cellular components, such as proteins and DNAs, regardless of the state of the cells, that is, treated or not treated or even if the cells are no longer viable. Therefore, changes in water dynamics could be detected prior to those related to the global dynamics within the cellular environment.
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Affiliation(s)
- Murillo L. Martins
- System
and Production Engineering Graduate Program, Pontifical Catholic University of Goias, 74605-010 Goiania, Brazil
| | - Heloisa N. Bordallo
- Niels
Bohr Institute, University of Copenhagen, DK-2100 Copenhagen, Denmark
- European
Spallation Source, P.O. Box 176, SE-221 00 Lund, Sweden
| | - Silvia Arrese-Igor
- Centro
de Física de Materiales, Centro Mixto
CSIC-UPV/EHU, Paseo Manuel
Lardizabal 5, 20018 San Sebastián, Spain
| | - Angel Alegría
- Centro
de Física de Materiales, Centro Mixto
CSIC-UPV/EHU, Paseo Manuel
Lardizabal 5, 20018 San Sebastián, Spain
| | - Juan Colmenero de Leon
- Centro
de Física de Materiales, Centro Mixto
CSIC-UPV/EHU, Paseo Manuel
Lardizabal 5, 20018 San Sebastián, Spain
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19
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Martins AS, Batista de Carvalho AL, Lamego I, Marques MPM, Gil AM. Cytotoxicity of Platinum and Palladium Chelates against Osteosarcoma. ChemistrySelect 2020. [DOI: 10.1002/slct.202001361] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ana S. Martins
- University of Coimbra Unidade de I&D Química-Física Molecular, Department of Chemistry, Rua Larga 3004-535 Coimbra Portugal
- CICECO-Aveiro Institute of Materials (CICECO/UA), Department of Chemistry University of Aveiro, Campus Universitário de Santiago 3810-193 Aveiro Portugal
| | - Ana L.M. Batista de Carvalho
- University of Coimbra Unidade de I&D Química-Física Molecular, Department of Chemistry, Rua Larga 3004-535 Coimbra Portugal
| | - Inês Lamego
- University of Coimbra Unidade de I&D Química-Física Molecular, Department of Chemistry, Rua Larga 3004-535 Coimbra Portugal
- CICECO-Aveiro Institute of Materials (CICECO/UA), Department of Chemistry University of Aveiro, Campus Universitário de Santiago 3810-193 Aveiro Portugal
| | - M.▪ Paula. M. Marques
- University of Coimbra Unidade de I&D Química-Física Molecular, Department of Chemistry, Rua Larga 3004-535 Coimbra Portugal
- University of Coimbra, Department of Life Sciences Faculty of Science and Technology, Calçada Martim de Freitas 3000-456 Coimbra Portugal
| | - Ana M. Gil
- CICECO-Aveiro Institute of Materials (CICECO/UA), Department of Chemistry University of Aveiro, Campus Universitário de Santiago 3810-193 Aveiro Portugal
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20
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Marques MPM, Batista de Carvalho ALM, Mamede AP, Rudić S, Dopplapudi A, García Sakai V, Batista de Carvalho LAE. Intracellular water as a mediator of anticancer drug action. INT REV PHYS CHEM 2020. [DOI: 10.1080/0144235x.2020.1700083] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- M. P. M. Marques
- Unidade de I&D Química-Física Molecular, Department of Chemistry, University of Coimbra, Coimbra, Portugal
- Department of Life Sciences, University of Coimbra, Coimbra, Portugal
| | | | - A. P. Mamede
- Unidade de I&D Química-Física Molecular, Department of Chemistry, University of Coimbra, Coimbra, Portugal
| | - S. Rudić
- STFC Rutherford Appleton Laboratory, ISIS Facility, Chilton, Didcot, UK
| | - A. Dopplapudi
- STFC Rutherford Appleton Laboratory, ISIS Facility, Chilton, Didcot, UK
| | - V. García Sakai
- STFC Rutherford Appleton Laboratory, ISIS Facility, Chilton, Didcot, UK
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21
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A New Look into the Mode of Action of Metal-Based Anticancer Drugs. Molecules 2020; 25:molecules25020246. [PMID: 31936161 PMCID: PMC7024343 DOI: 10.3390/molecules25020246] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 12/29/2019] [Accepted: 01/02/2020] [Indexed: 01/25/2023] Open
Abstract
The mode of action of Pt- and Pd-based anticancer agents (cisplatin and Pd2Spm) was studied by characterising their impact on DNA. Changes in conformation and mobility at the molecular level in hydrated DNA were analysed by quasi-elastic and inelastic neutron scattering techniques (QENS and INS), coupled to Fourier transform infrared (FTIR) and microRaman spectroscopies. Although INS, FTIR and Raman revealed drug-triggered changes in the phosphate groups and the double helix base pairing, QENS allowed access to the nanosecond motions of the biomolecule’s backbone and confined hydration water within the minor groove. Distinct effects were observed for cisplatin and Pd2Spm, the former having a predominant effect on DNA’s spine of hydration, whereas the latter had a higher influence on the backbone dynamics. This is an innovative way of tackling a drug’s mode of action, mediated by the hydration waters within its pharmacological target (DNA).
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22
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Mamontov E, Osti NC, Tyagi M. Temperature dependence of nanoscale dynamic processes measured in living millipedes by high resolution inelastic and elastic neutron scattering. Sci Rep 2019; 9:11646. [PMID: 31406234 PMCID: PMC6691110 DOI: 10.1038/s41598-019-48270-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Accepted: 08/01/2019] [Indexed: 12/12/2022] Open
Abstract
We have used high energy-resolution neutron scattering to probe nanoscale dynamic processes in living millipedes (Narceus americanus). We have measured the temperature dependence of the intensity of scattered neutrons that do not exchange energy with the living samples on the 1.5 ns time scale, thereby excluding the signal from the highly mobile intra- and extra-cellular bulk-like aqueous constituents in the sample. This measured “elastic” scattering intensity exhibits a non-monotonic temperature dependence, with a noticeable systematic decrease detected between 295 and 303 K on warming up from 283 to 310 K. This decrease demonstrates an excellent inverse correlation with the non-monotonic, as a function of temperature, increase in the slow diffusivity previously observed in planarian flatworms and housefly larvae. This correlation suggests the existence of a biological mechanism, possibly common between different classes (Insects and Myriapods) and even phyla (Arthropods and Platyhelminthes), that dampens the slow nanoscopic dynamics in ectothermic organisms in response to the temperature of the environment exceeding the physiologically optimal range.
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Affiliation(s)
- Eugene Mamontov
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee, 37831, USA.
| | - Naresh C Osti
- Neutron Scattering Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee, 37831, USA
| | - Madhusudan Tyagi
- NIST Center for Neutron Research and University of Maryland, Gaithersburg, Maryland, 20899, USA
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23
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Marques MPM, Batista de Carvalho ALM, Mamede AP, Santos IP, García Sakai V, Dopplapudi A, Cinque G, Wolna M, Gardner P, Batista de Carvalho LAE. Chemotherapeutic Targets in Osteosarcoma: Insights from Synchrotron-MicroFTIR and Quasi-Elastic Neutron Scattering. J Phys Chem B 2019; 123:6968-6979. [PMID: 31339317 DOI: 10.1021/acs.jpcb.9b05596] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
This study aimed at the development of improved drugs against human osteosarcoma, which is the most common primary bone tumor in children and teenagers with a low prognosis. New insights into the impact of an unconventional Pd(II) anticancer agent on human osteosarcoma cells were obtained by synchrotron radiation-Fourier transform infrared microspectroscopy and quasi-elastic neutron scattering (QENS) experiments from its effect on the cellular metabolism to its influence on intracellular water, which can be regarded as a potential secondary pharmacological target. Specific infrared biomarkers of drug action were identified, enabling a molecular-level description of variations in cellular biochemistry upon drug exposure. The main changes were detected in the protein and lipid cellular components, namely, in the ratio of unsaturated-to-saturated fatty acids. QENS revealed reduced water mobility within the cytoplasm for drug-treated cells, coupled to a disruption of the hydration layers of biomolecules. Additionally, the chemical and dynamical profiles of osteosarcoma cells were compared to those of metastatic breast cancer cells, revealing distinct dissimilarities that may influence drug activity.
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Affiliation(s)
- Maria Paula M Marques
- "Química-Física Molecular", Department of Chemistry , University of Coimbra , 3004-535 Coimbra , Portugal.,Department of Life Sciences , University of Coimbra , 3000-456 Coimbra , Portugal
| | | | - Adriana P Mamede
- "Química-Física Molecular", Department of Chemistry , University of Coimbra , 3004-535 Coimbra , Portugal
| | - Inês P Santos
- "Química-Física Molecular", Department of Chemistry , University of Coimbra , 3004-535 Coimbra , Portugal
| | - Victoria García Sakai
- ISIS Facility , STFC Rutherford Appleton Laboratory , Chilton, Didcot , Oxfordshire OX11 0QX , U.K
| | - Asha Dopplapudi
- ISIS Facility , STFC Rutherford Appleton Laboratory , Chilton, Didcot , Oxfordshire OX11 0QX , U.K
| | - Gianfelice Cinque
- Diamond Light Source , Harwell Science and Innovation Campus , Chilton, Didcot , Oxfordshire OX11 0DE , U.K
| | - Magda Wolna
- Diamond Light Source , Harwell Science and Innovation Campus , Chilton, Didcot , Oxfordshire OX11 0DE , U.K
| | - Peter Gardner
- Manchester Institute of Biotechnology , University of Manchester , Manchester M1 7DN , U.K
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24
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Dynamics Properties of Photosynthetic Microorganisms Probed by Incoherent Neutron Scattering. Biophys J 2019; 116:1759-1768. [PMID: 31003761 DOI: 10.1016/j.bpj.2019.03.029] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 03/18/2019] [Accepted: 03/20/2019] [Indexed: 01/06/2023] Open
Abstract
Studies on the dynamical properties of photosynthetic membranes of land plants and purple bacteria have been previously performed by neutron spectroscopy, revealing a tight coupling between specific photochemical reactions and macromolecular dynamics. Here, we probed the intrinsic dynamics of biotechnologically useful mutants of the green alga Chlamydomonas reinhardtii by incoherent neutron scattering coupled with prompt chlorophyll fluorescence experiments. We brought to light that single amino acid replacements in the plastoquinone (PQ)-binding niche of the photosystem II D1 protein impair electron transport (ET) efficiency between quinones and confer increased flexibility to the host membranes, expanding to the entire cells. Hence, a more flexible environment in the PQ-binding niche has been associated to a less efficient ET. A similar function/dynamics relationship was also demonstrated in Rhodobacter sphaeroides reaction centers having inhibited ET, indicating that flexibility at the quinones region plays a crucial role in evolutionarily distant organisms. Instead, a different functional/dynamical correlation was observed in algal mutants hosting a single amino acid replacement residing in a D1 domain far from the PQ-binding niche. Noteworthy, this mutant displayed the highest degree of flexibility, and besides having a nativelike ET efficiency in physiological conditions, it acquired novel, to our knowledge, phenotypic traits enabling it to preserve a high maximal quantum yield of photosystem II photochemistry in extreme habitats. Overall, in the nanosecond timescale, the degree of the observed flexibility is related to the mutation site; in the picosecond timescale, we highlighted the presence of a more pronounced dynamic heterogeneity in all mutants compared to the native cells, which could be related to a marked chemically heterogeneous environment.
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25
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Martinho N, Santos TCB, Florindo HF, Silva LC. Cisplatin-Membrane Interactions and Their Influence on Platinum Complexes Activity and Toxicity. Front Physiol 2019; 9:1898. [PMID: 30687116 PMCID: PMC6336831 DOI: 10.3389/fphys.2018.01898] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 12/18/2018] [Indexed: 01/22/2023] Open
Abstract
Cisplatin and other platinum(II) analogs are widely used in clinical practice as anti-cancer drugs for a wide range of tumors. The primary mechanism by which they exert their action is through the formation of adducts with genomic DNA. However, multiple cellular targets by platinum(II) complexes have been described. In particular, the early events occurring at the plasma membrane (PM), i.e., platinum-membrane interactions seem to be involved in the uptake, cytotoxicity and cell-resistance to cisplatin. In fact, PM influences signaling events, and cisplatin-induced changes on membrane organization and fluidity were shown to activate apoptotic pathways. This review critically discusses the sequence of events caused by lipid membrane-platinum interactions, with emphasis on the mechanisms that lead to changes in the biophysical properties of the membranes (e.g., fluidity and permeability), and how these correlate with sensitivity and resistance phenotypes of cells to platinum(II) complexes.
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Affiliation(s)
- Nuno Martinho
- iMed.ULisboa - Research Institute for Medicines, Faculdade de Farmácia, Universidade de Lisboa, Lisbon, Portugal
| | - Tânia C B Santos
- iMed.ULisboa - Research Institute for Medicines, Faculdade de Farmácia, Universidade de Lisboa, Lisbon, Portugal.,Centro de Química-Física Molecular, Institute of Nanoscience and Nanotechnology and IBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
| | - Helena F Florindo
- iMed.ULisboa - Research Institute for Medicines, Faculdade de Farmácia, Universidade de Lisboa, Lisbon, Portugal
| | - Liana C Silva
- iMed.ULisboa - Research Institute for Medicines, Faculdade de Farmácia, Universidade de Lisboa, Lisbon, Portugal.,Centro de Química-Física Molecular, Institute of Nanoscience and Nanotechnology and IBB-Institute for Bioengineering and Biosciences, Instituto Superior Técnico, Universidade de Lisboa, Lisbon, Portugal
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26
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Batista de Carvalho ALM, Mamede AP, Dopplapudi A, Garcia Sakai V, Doherty J, Frogley M, Cinque G, Gardner P, Gianolio D, Batista de Carvalho LAE, Marques MPM. Anticancer drug impact on DNA – a study by neutron spectroscopy coupled with synchrotron-based FTIR and EXAFS. Phys Chem Chem Phys 2019; 21:4162-4175. [DOI: 10.1039/c8cp05881d] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Complementary information on drug–DNA interplay has been achieved for Pt/Pd anticancer agents, by a combined QENS, SR-FTIR-ATR and EXAFS approach.
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Affiliation(s)
| | - Adriana P. Mamede
- Química-Física Molecular
- Department of Chemistry
- University of Coimbra
- 3004-535 Coimbra
- Portugal
| | - Asha Dopplapudi
- ISIS Facility
- STFC Rutherford Appleton Laboratory
- Chilton
- Didcot
- UK
| | | | - James Doherty
- Diamond Light Source
- Harwell Science and Innovation Campus
- Chilton
- Didcot
- UK
| | - Mark Frogley
- Diamond Light Source
- Harwell Science and Innovation Campus
- Chilton
- Didcot
- UK
| | - Gianfelice Cinque
- Diamond Light Source
- Harwell Science and Innovation Campus
- Chilton
- Didcot
- UK
| | - Peter Gardner
- Manchester Institute of Biotechnology
- University of Manchester
- Manchester
- UK
| | - Diego Gianolio
- Diamond Light Source
- Harwell Science and Innovation Campus
- Chilton
- Didcot
- UK
| | | | - M. Paula M. Marques
- Química-Física Molecular
- Department of Chemistry
- University of Coimbra
- 3004-535 Coimbra
- Portugal
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27
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Wang M, Yuan F, Wei Y, Xia C, Hu F, Song B. Hepatocellular Carcinoma: In Vivo Evaluation of Water Percentage as a Prognostic Biomarker Using Magnetic Resonance Imaging 3D-VIBE Multiecho Dixon. Cancer Biother Radiopharm 2018; 33:300-306. [PMID: 30109954 DOI: 10.1089/cbr.2018.2483] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
INTRODUCTION It is urgent to find an effective method to diagnose and prognose early hepatocellular carcinoma (HCC). The purpose of this study was to investigate the correlation between HCC histological degree and water percentage (WP) obtained from magnetic resonance imaging 3D-VIBE multiecho Dixon, and to evaluate the feasibility of WP in the postoperative prediction of early HCC recurrence. METHODS AND MATERIALS From June 2016 to July 2017, 76 patients with diagnostic HCC all underwent 3D-VIBE Multiecho Dixon and ultrahigh b value diffusion-weighted imaging (DWI) examination. Freehand regions of interests were placed to measure the WP and apparent diffusion coefficient (ADC) value. The Edmondson-Steiner (E-S) grades proved by histopathological results were acquired from all patients. Comparisons between mean WP and ADC with E-S grades I-IV were performed using Kruskal-Wallis test and one-way ANOVA. Least Significant Difference t-test (LSD-t test) was applied to compare particular pairs of mean ADC value between every two E-S groups. Correlations between WP, ADC, and E-S grades were assessed by Spearman's rank correlation test. The Mann-Whitney U test was utilized to compare the difference of mean WP between recurrence and nonrecurrence group. The receiver operating characteristic (ROC) curves were calculated to estimate the diagnostic effect of 3D-VIBE Multiecho Dixon and ultrahigh b value DWI to HCC. Kaplan-Meier method was used to evaluate the recurrence free survival (RFS) after surgical resection. RESULTS Mean WP values among groups E-S I to IV were 91.8%, 95.2%, 96.4%, and 97.7%, respectively. A positive correlation was exhibited between the WP and histopathological E-S grades (r = 0.480, p < 0.01). The ADC values based on E-S grades were 0.93, 0.82, 0.74, and 0.62 × 10-3 mm2/s, respectively. Significant differences were found between every two E-S groups (p < 0.01), and a negative correlation between ADC and E-S grades (r = -0.784, p = 0.000) was observed. Mean value of WP was 97.2% in recurrence group and 94.6% in nonrecurrence group (p < 0.01). The optimal cutoff value was 95.7%. The maximal area under the ROC curve was 0.747 ± 0.06 for WP, 0.631 ± 0.07 for ADC, and 0.753 ± 0.06 for the combination of WP and ADC. Mean RFS was 18.1 months in the lower WP and 10.7 months in higher WP group (p < 0.01). CONCLUSIONS WP can be used as a potential biomarker for the diagnosis and prognosis of HCC. A lower value of WP may imply a better outcome in patients after surgical resection.
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Affiliation(s)
- Min Wang
- Department of Radiology, West China Hospital, Sichuan University , Chengdu, China
| | - Fang Yuan
- Department of Radiology, West China Hospital, Sichuan University , Chengdu, China
| | - Yi Wei
- Department of Radiology, West China Hospital, Sichuan University , Chengdu, China
| | - Chunchao Xia
- Department of Radiology, West China Hospital, Sichuan University , Chengdu, China
| | - Fubi Hu
- Department of Radiology, West China Hospital, Sichuan University , Chengdu, China
| | - Bin Song
- Department of Radiology, West China Hospital, Sichuan University , Chengdu, China
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Vural D, Smith JC, Glyde HR. Determination of Dynamical Heterogeneity from Dynamic Neutron Scattering of Proteins. Biophys J 2018; 114:2397-2407. [PMID: 29580551 DOI: 10.1016/j.bpj.2018.02.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 01/26/2018] [Accepted: 02/12/2018] [Indexed: 02/04/2023] Open
Abstract
Motional displacements of hydrogen (H) in proteins can be measured using incoherent neutron-scattering methods. These displacements can also be calculated numerically using data from molecular dynamics simulations. An enormous amount of data on the average mean-square motional displacement (MSD) of H as a function of protein temperature, hydration, and other conditions has been collected. H resides in a wide spectrum of sites in a protein. Some H are tightly bound to molecular chains, and the H motion is dictated by that of the chain. Other H are quite independent. As a result, there is a distribution of motions and MSDs of H within a protein that is denoted dynamical heterogeneity. The goal of this paper is to incorporate a distribution of MSDs into models of the H incoherent intermediate scattering function, I(Q,t), that is calculated and observed. The aim is to contribute information on the distribution as well as on the average MSD from comparison of the models with simulations and experiment. For example, we find that simulations of I(Q,t) in lysozyme are well reproduced if the distribution of MSDs is bimodal with two broad peaks rather than a single broad peak.
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Affiliation(s)
- Derya Vural
- Department of Physics and Astronomy, University of Delaware, Newark, Delaware; Department of Physics, Giresun University, Giresun, Turkey.
| | - Jeremy C Smith
- UT/ORNL Center for Molecular Biophysics, Oak Ridge National Laboratory, Oak Ridge, Tennessee
| | - Henry R Glyde
- Department of Physics and Astronomy, University of Delaware, Newark, Delaware
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Abstract
Living planarian flatworms were probed using quasielastic neutron scattering to measure, on the pico-to-nanosecond time scale and nanometer length scale, microscopic diffusion of water and cell constituents in the planarians. Measurable microscopic diffusivities were surprisingly well defined in such a complex system as living animals. The overall variation in the microscopic diffusivity of cell constituents was found to be far lower than the variation in the microscopic diffusivity of water in planarians in a temperature range of 284.5 to 304.1 K.
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30
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Kirichek O. Sample environment for neutron scattering experiments at ISIS. JOURNAL OF NEUTRON RESEARCH 2017. [DOI: 10.3233/jnr-170036] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Oleg Kirichek
- ISIS Neutron and Muon Source, Rutherford Appleton Laboratory, Science and Technology Facilities Council, Didcot, OX11 0QX, UK. E-mail:
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