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La Salvia A, Lens-Pardo A, López-López A, Carretero-Puche C, Capdevila J, Benavent M, Jiménez-Fonseca P, Castellano D, Alonso T, Teule A, Custodio A, Tafuto S, La Casta A, Spada F, Lopez-Gonzalvez A, Gil-Calderon B, Espinosa-Olarte P, Barbas C, Garcia-Carbonero R, Soldevilla B. Metabolomic profile of neuroendocrine tumors identifies methionine, porphyrin, and tryptophan metabolisms as key dysregulated pathways associated with patient survival. Eur J Endocrinol 2024; 190:62-74. [PMID: 38033321 DOI: 10.1093/ejendo/lvad160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 10/17/2023] [Accepted: 11/06/2023] [Indexed: 12/02/2023]
Abstract
OBJECTIVE Metabolic profiling is a valuable tool to characterize tumor biology but remains largely unexplored in neuroendocrine tumors (NETs). Our aim was to comprehensively assess the metabolomic profile of NETs and identify novel prognostic biomarkers and dysregulated molecular pathways. DESIGN AND METHODS Multiplatform untargeted metabolomic profiling (GC-MS, CE-MS, and LC-MS) was performed in plasma from 77 patients with G1-2 extra-pancreatic NETs enrolled in the AXINET trial (NCT01744249) (study cohort) and from 68 non-cancer individuals (control). The prognostic value of each differential metabolite (n = 155) in NET patients (P < .05) was analyzed by univariate and multivariate analyses adjusted for multiple testing and other confounding factors. Related pathways were explored by Metabolite Set Enrichment Analysis (MSEA) and Metabolite Pathway Analysis (MPA). RESULTS Thirty-four metabolites were significantly associated with progression-free survival (PFS) (n = 16) and/or overall survival (OS) (n = 27). Thirteen metabolites remained significant independent prognostic factors in multivariate analysis, 3 of them with a significant impact on both PFS and OS. Unsupervised clustering of these 3 metabolites stratified patients in 3 distinct prognostic groups (1-year PFS of 71.1%, 47.7%, and 15.4% (P = .012); 5-year OS of 69.7%, 32.5%, and 27.7% (P = .003), respectively). The MSEA and MPA of the 13-metablolite signature identified methionine, porphyrin, and tryptophan metabolisms as the 3 most relevant dysregulated pathways associated with the prognosis of NETs. CONCLUSIONS We identified a metabolomic signature that improves prognostic stratification of NET patients beyond classical prognostic factors for clinical decisions. The enriched metabolic pathways identified reveal novel tumor vulnerabilities that may foster the development of new therapeutic strategies for these patients.
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Affiliation(s)
- Anna La Salvia
- Center of Experimental Oncology, Gastrointestinal and Neuroendrocrine Tumors Research Group, Research Institute Hospital 12 de Octubre (imas12), 28041 Madrid, Spain
- Oncology Department, Hospital Universitario 12 de Octubre, 28041 Madrid, Spain
- National Center for Drug Research and Evaluation, National Institute of Health (ISS), 00161 Rome, Italy
| | - Alberto Lens-Pardo
- Center of Experimental Oncology, Gastrointestinal and Neuroendrocrine Tumors Research Group, Research Institute Hospital 12 de Octubre (imas12), 28041 Madrid, Spain
- Spanish National Cancer Research Center (CNIO), 28029 Madrid, Spain
| | - Angel López-López
- Department of Chemistry and Biochemistry, Facultad de Farmacia, Centre for Metabolomics and Bioanalysis (CEMBIO), Universidad San Pablo-CEU, CEU Universities, Urbanización Montepríncipe, Boadilla del Monte, 28925 Madrid, Spain
| | - Carlos Carretero-Puche
- Center of Experimental Oncology, Gastrointestinal and Neuroendrocrine Tumors Research Group, Research Institute Hospital 12 de Octubre (imas12), 28041 Madrid, Spain
- Spanish National Cancer Research Center (CNIO), 28029 Madrid, Spain
| | - Jaume Capdevila
- Vall Hebron University Hospital and Vall Hebron Institute of Oncology (VHIO), 08035 Barcelona, Spain
| | - Marta Benavent
- Medical Oncology Department, Hospital Virgen del Rocío, Instituto de Biomedicina de Sevilla (IBIS), 41013 Seville, Spain
| | - Paula Jiménez-Fonseca
- Medical Oncology Department, Hospital Universitario Central de Asturias, ISPA, 33011 Oviedo, Spain
| | - Daniel Castellano
- Oncology Department, Hospital Universitario 12 de Octubre, 28041 Madrid, Spain
| | - Teresa Alonso
- Medical Oncology, Hospital Universitario Ramón y Cajal, 28034 Madrid, Spain
| | - Alexandre Teule
- Institut Català d'Oncologia (ICO)-Institut d'Investigació Biomèdica de Bellvitge (IDIBELL), 08908 L'Hospitalet del Llobregat, Barcelona, Spain
| | - Ana Custodio
- Department of Medical Oncology, Hospital Universitario La Paz, CIBERONC CB16/12/00398, 28046 Madrid, Spain
| | - Salvatore Tafuto
- Sarcomas and Rare Tumours Unit, Istituto Nazionale Tumori, IRCCS Fondazione G. Pascale, 80131 Naples, Italy
| | - Adelaida La Casta
- Department of Medical Oncology, Biodonostia Health Research Institute, Donostia University Hospital, University of the Basque Country (UPV/EHU), 20014 San Sebastián, Spain
| | - Francesca Spada
- Division of Gastrointestinal Medical Oncology and Neuroendocrine Tumors, IEO, European Institute of Oncology, IRCCS, 20141 Milan, Italy
| | - Angeles Lopez-Gonzalvez
- Department of Chemistry and Biochemistry, Facultad de Farmacia, Centre for Metabolomics and Bioanalysis (CEMBIO), Universidad San Pablo-CEU, CEU Universities, Urbanización Montepríncipe, Boadilla del Monte, 28925 Madrid, Spain
| | - Beatriz Gil-Calderon
- Center of Experimental Oncology, Gastrointestinal and Neuroendrocrine Tumors Research Group, Research Institute Hospital 12 de Octubre (imas12), 28041 Madrid, Spain
- Spanish National Cancer Research Center (CNIO), 28029 Madrid, Spain
| | - Paula Espinosa-Olarte
- Center of Experimental Oncology, Gastrointestinal and Neuroendrocrine Tumors Research Group, Research Institute Hospital 12 de Octubre (imas12), 28041 Madrid, Spain
- Oncology Department, Hospital Universitario 12 de Octubre, 28041 Madrid, Spain
| | - Coral Barbas
- Department of Chemistry and Biochemistry, Facultad de Farmacia, Centre for Metabolomics and Bioanalysis (CEMBIO), Universidad San Pablo-CEU, CEU Universities, Urbanización Montepríncipe, Boadilla del Monte, 28925 Madrid, Spain
| | - Rocio Garcia-Carbonero
- Center of Experimental Oncology, Gastrointestinal and Neuroendrocrine Tumors Research Group, Research Institute Hospital 12 de Octubre (imas12), 28041 Madrid, Spain
- Oncology Department, Hospital Universitario 12 de Octubre, 28041 Madrid, Spain
- Spanish National Cancer Research Center (CNIO), 28029 Madrid, Spain
- Medicine Department, Complutense University of Madrid (UCM), 28040 Madrid, Spain
| | - Beatriz Soldevilla
- Center of Experimental Oncology, Gastrointestinal and Neuroendrocrine Tumors Research Group, Research Institute Hospital 12 de Octubre (imas12), 28041 Madrid, Spain
- Spanish National Cancer Research Center (CNIO), 28029 Madrid, Spain
- Genetics, Physiology and Microbiology Department, Complutense University of Madrid (UCM), 28040 Madrid, Spain
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Kirar S, Chaudhari D, Thakur NS, Jain S, Bhaumik J, Laha JK, Banerjee UC. Light-assisted anticancer photodynamic therapy using porphyrin-doped nanoencapsulates. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2021; 220:112209. [PMID: 34049179 DOI: 10.1016/j.jphotobiol.2021.112209] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Revised: 04/17/2021] [Accepted: 05/03/2021] [Indexed: 12/14/2022]
Abstract
Light activatable porphyrinic photosensitizers (PSs) are essential components of anticancer and antimicrobial therapy and diagnostic imaging. However, their biological applications are quite challenging due to the lack of hydrophilicity and biocompatibility. To overcome such drawbacks, photosensitizers can be doped into a biocompatible polymer such as gelatin and further can be used for biomedical applications. Herein, first, a novel A4 type porphyrin PS [5,10,15,20-tetrakis(4-pyridylamidephenyl)porphyrin; TPyAPP] was synthesized via a rational route with good yield. Further, this porphyrin was encapsulated into the gelatin nanoparticles (GNPs) to develop hydrophilic phototherapeutic nanoagents (PTNAs, A4por-GNPs). Notably, the synthesis of such porphyrin-doped GNPs avoids the use of any toxic chemicals or solvents. The nanoprobes have also shown good fluorescence quantum yield demonstrating their applicability in bioimaging. Further, the mechanistic aspects of the anticancer and antimicrobial efficacy of the developed A4por-GNPs were evaluated via singlet oxygen generation studies. Overall, our results indicated porphyrin-doped biodegradable polymeric nanoparticles act as effective phototherapeutic agents against a broad range of cancer cell lines and microbes upon activation by the low-cost LED light.
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Affiliation(s)
- Seema Kirar
- Department of Biotechnology, National Institute of Pharmaceutical Education and Research (NIPER), Sector-67, S.A.S. Nagar 160062, Punjab, India
| | - Dasharath Chaudhari
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Sector-67, S.A.S. Nagar 160062, Punjab, India
| | - Neeraj S Thakur
- Department of Pharmaceutical Technology (Biotechnology), National Institute of Pharmaceutical Education and Research (NIPER), Sector-67, S.A.S. Nagar 160062, Punjab, India; Department of Nanomaterials and Application Technology, Center of Innovative and Applied Bioprocessing (CIAB), Sector-81 (Knowledge City), S.A.S. Nagar, Mohali 140306, Punjab, India
| | - Sanyog Jain
- Department of Pharmaceutics, National Institute of Pharmaceutical Education and Research (NIPER), Sector-67, S.A.S. Nagar 160062, Punjab, India
| | - Jayeeta Bhaumik
- Department of Nanomaterials and Application Technology, Center of Innovative and Applied Bioprocessing (CIAB), Sector-81 (Knowledge City), S.A.S. Nagar, Mohali 140306, Punjab, India
| | - Joydev K Laha
- Department of Pharmaceutical Technology (Process Chemistry), National Institute of Pharmaceutical Education and Research (NIPER), Sector-67, S.A.S. Nagar 160062, Punjab, India
| | - Uttam C Banerjee
- Department of Pharmaceutical Technology (Biotechnology), National Institute of Pharmaceutical Education and Research (NIPER), Sector-67, S.A.S. Nagar 160062, Punjab, India.
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3
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Temperature-sensitive effect of topological polymers: Application of polymer-supported manganese porphyrins in catalytic oxidation of low concentration ferrous iron. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2020.110113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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4
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Kirar S, Thakur NS, Laha JK, Banerjee UC. Porphyrin Functionalized Gelatin Nanoparticle-Based Biodegradable Phototheranostics: Potential Tools for Antimicrobial Photodynamic Therapy. ACS APPLIED BIO MATERIALS 2019; 2:4202-4212. [DOI: 10.1021/acsabm.9b00493] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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5
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Sanad MH, Farag AB, Saleh GM. Radiosynthesis and Biological Evaluation of 188Re-5,10,15,20-Tetra(4-pyridyl)-21H,23H-porphyrin Complex as a Tumor-Targeting Agent. RADIOCHEMISTRY 2019. [DOI: 10.1134/s106636221903010x] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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6
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Liu C, Li Y, Gao B, Li Y, Duan Q, Kakuchi T. Comb-shaped, temperature-tunable and water-soluble porphyrin-based thermoresponsive copolymer for enhanced photodynamic therapy. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 82:155-162. [PMID: 29025643 DOI: 10.1016/j.msec.2017.08.047] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Revised: 07/11/2017] [Accepted: 08/10/2017] [Indexed: 11/24/2022]
Abstract
A novel comb-shaped porphyrin end-functionalized poly(N-isopropylacrylamide)-b-poly[oligo (ethylene glycol methyl ether methacrylate)] (Por-PNIPAM-b-POEGMA) was synthesized via reversible addition-fragmentation chain transfer (RAFT) polymerization. Due to the incorporation of hydrophilic POEGMA contents, the copolymer shows the lower critical solution temperatures (LCST) of 37-41.8°C higher than PNIPAM. Moreover, this copolymer showed efficient singlet oxygen under light irradiation at 650nm, and the productivity of singlet oxygen was 0.59, which could be used for photodynamic therapy. In addition, the in vitro study indicated that this copolymer showed no significant dark cytotoxicity, while showed apparent photo-toxicity toward HeLa cancer cells under red light irradiation at 650nm. MTT results indicated that this copolymer with appropriate LCST could be accumulated on locally tumor tissues and killing of cancer cells (Hela), which may be a promising photosensitizer in photodynamic therapy for cancer treatment.
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Affiliation(s)
- Changling Liu
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, China; School of Materials science and Engineering, Jilin Institute of Chemical Technology, Jilin City 132022, China
| | - Yanhui Li
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, China
| | - Bo Gao
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, China
| | - Yanwei Li
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, China
| | - Qian Duan
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, China.
| | - Toyoji Kakuchi
- School of Materials Science and Engineering, Changchun University of Science and Technology, Changchun 130022, China; Division of Biotechnology and Macromolecular Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo, Japan
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7
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Entract GM, Bryden F, Domarkas J, Savoie H, Allott L, Archibald SJ, Cawthorne C, Boyle RW. Development of PDT/PET Theranostics: Synthesis and Biological Evaluation of an (18)F-Radiolabeled Water-Soluble Porphyrin. Mol Pharm 2015; 12:4414-23. [PMID: 26559906 DOI: 10.1021/acs.molpharmaceut.5b00606] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Synthesis of the first water-soluble porphyrin radiolabeled with fluorine-18 is described: a new molecular theranostic agent which integrates the therapeutic selectivity of photodynamic therapy (PDT) with the imaging efficacy of positron emission tomography (PET). Generation of the theranostic was carried out through the conjugation of a cationic water-soluble porphyrin bearing an azide functionality to a fluorine-18 radiolabeled prosthetic bearing an alkyne functionality through click conjugation, with excellent yields obtained in both cold and hot synthesis. Biological evaluation of the synthesized structures shows the first example of an (18)F-radiolabeled porphyrin retaining photocytotoxicity following radiolabeling and demonstrable conjugate uptake and potential application as a radiotracer in vivo. The promising results gained from biological evaluation demonstrate the potential of this structure as a clinically relevant theranostic agent, offering exciting possibilities for the simultaneous imaging and photodynamic treatment of tumors.
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Affiliation(s)
- Guy M Entract
- Department of Chemistry, University of Hull , Cottingham Road, Hull, Yorkshire HU6 7RX, U.K
| | - Francesca Bryden
- Department of Chemistry, University of Hull , Cottingham Road, Hull, Yorkshire HU6 7RX, U.K.,Positron Emission Tomography Research Centre, University of Hull , Cottingham Road, Hull, Yorkshire, HU6 7RX, U.K
| | - Juozas Domarkas
- Department of Chemistry, University of Hull , Cottingham Road, Hull, Yorkshire HU6 7RX, U.K.,Positron Emission Tomography Research Centre, University of Hull , Cottingham Road, Hull, Yorkshire, HU6 7RX, U.K
| | - Huguette Savoie
- Department of Chemistry, University of Hull , Cottingham Road, Hull, Yorkshire HU6 7RX, U.K
| | - Louis Allott
- Institute of Cancer Research , 123 Old Brompton Road, London, SW7 3RP, U.K
| | - Stephen J Archibald
- Department of Chemistry, University of Hull , Cottingham Road, Hull, Yorkshire HU6 7RX, U.K.,Positron Emission Tomography Research Centre, University of Hull , Cottingham Road, Hull, Yorkshire, HU6 7RX, U.K
| | - Chris Cawthorne
- Positron Emission Tomography Research Centre, University of Hull , Cottingham Road, Hull, Yorkshire, HU6 7RX, U.K.,School of Biological, Biomedical and Environmental Sciences, University of Hull , Cottingham Road, Hull, Yorkshire, HU6 7RX, U.K
| | - Ross W Boyle
- Department of Chemistry, University of Hull , Cottingham Road, Hull, Yorkshire HU6 7RX, U.K
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8
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Ryazanova O, Zozulya V, Voloshin I, Dubey L, Dubey I, Karachevtsev V. Binding of Metallated Porphyrin-Imidazophenazine Conjugate to Tetramolecular Quadruplex Formed by Poly(G): a Spectroscopic Investigation. J Fluoresc 2015; 25:1897-904. [PMID: 26449960 DOI: 10.1007/s10895-015-1682-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Accepted: 09/28/2015] [Indexed: 01/10/2023]
Abstract
The binding of telomerase inhibitor ZnTMPyP(3+)-ImPzn, Zn(II) derivative of tricationic porphyrin-imidazophenazine conjugate, to tetramolecular quadruplex structure formed by poly(G) was studied in aqueous solutions at neutral pH and near physiological ionic strength using absorption and polarized fluorescent spectroscopy techniques. Three binding modes were determined from the dependences of the fluorescence intensity and polarization degree for the porphyrin and phenazine moieties of the conjugate on molar polymer-to-dye ratio (P/D). The first one is outside electrostatic binding of positively charged porphyrin fragments to anionic phosphate groups of the polymer which prevails only at very low P/D values and manifests itself by substantial fluorescence quenching. It is suggested that the formation of externally bound porphyrin dimers occurs. The other two binding modes observed at high P/D are embedding of the ZnTMPyP(3+) moiety into the groove of poly(G) quadruplex accompanied by more than 3-fold enhancement of the conjugate emission, and simultaneous intercalation of the phenazine fragment between the guanine bases accompanied by the increase of its fluorescence polarization degree up to 0.25. Thus Zn(II) conjugate seems to be promising ligand for the stabilization of G-quadruplex structures since porphyrin binding to poly(G) is strengthened by additional intercalation of phenazine moiety.
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Affiliation(s)
- Olga Ryazanova
- Department of Molecular Biophysics, B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, 47 Lenin ave, 61103, Kharkov, Ukraine.
| | - Victor Zozulya
- Department of Molecular Biophysics, B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, 47 Lenin ave, 61103, Kharkov, Ukraine
| | - Igor Voloshin
- Department of Molecular Biophysics, B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, 47 Lenin ave, 61103, Kharkov, Ukraine
| | - Larysa Dubey
- Department of Synthetic Bioregulators, Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, 150 Zabolotnogo str, 03680, Kyiv, Ukraine
| | - Igor Dubey
- Department of Synthetic Bioregulators, Institute of Molecular Biology and Genetics, National Academy of Sciences of Ukraine, 150 Zabolotnogo str, 03680, Kyiv, Ukraine
| | - Victor Karachevtsev
- Department of Molecular Biophysics, B. Verkin Institute for Low Temperature Physics and Engineering, National Academy of Sciences of Ukraine, 47 Lenin ave, 61103, Kharkov, Ukraine
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9
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Zhu S, Wu F, Wang K, Zheng Y, Li Z, Zhang X, Wong WK. Photocytotoxicity, cellular uptake and subcellular localization of amidinophenylporphyrins as potential photodynamic therapeutic agents: An in vitro cell study. Bioorg Med Chem Lett 2015; 25:4513-7. [PMID: 26338364 DOI: 10.1016/j.bmcl.2015.08.072] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2015] [Revised: 08/22/2015] [Accepted: 08/26/2015] [Indexed: 12/22/2022]
Abstract
The cell-based studies of 5, 10, 15, 20-Tetrakis (4-amidinophenyl) porphyrin (Por1), its Zn complex (Por2) and amidinophenyl bisporphyrin (Por3) were carried out to examine their photocytotoxicity, cellular uptake and sub-cellular localization with human nasopharyngeal carcinoma cell (HK-1), using 5, 10, 15, 20-Tetrakis (N-methyl-4-pyridyl) porphyrin (H2TMPyP) as a reference. These porphyrins showed low dark-cytotoxicity and high photo-cytotoxicity against HK-1. The amphiphilic amidinophenyl bisporphyrin (Por3) displayed better cellular uptake than the single hydrophilic Por1, Por2 and H2TMPyP. As seen from the extent of overlapping of the fluorescence profiles, lysosomal localization of amidinophenylporphyrin Por1-Por3 and mito/lyso localization of the H2TMPyP occurred in the cells. The results suggest these porphyrins with amidine group could be used as potential agents in photodynamic therapy.
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Affiliation(s)
- Sizhe Zhu
- Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan, PR China
| | - Fengshou Wu
- Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan, PR China; College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, PR China
| | - Kai Wang
- Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan, PR China.
| | - Yunman Zheng
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, PR China
| | - Zaoying Li
- College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, PR China.
| | - Xiulan Zhang
- Key Laboratory for Green Chemical Process of Ministry of Education, Wuhan Institute of Technology, Wuhan, PR China
| | - Wai-Kwok Wong
- Department of Chemistry and Institute of Advanced Materials, Hong Kong Baptist University, Hong Kong, PR China.
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10
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Guleria M, Das T, Sarma HD, Banerjee S. Synthesis and bioevaluation of a 177Lu-labeled unsymmetrical cationic porphyrin derivative as a tumor targeting agent. J Radioanal Nucl Chem 2015. [DOI: 10.1007/s10967-015-4276-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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11
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Spectroscopic Studies on Binding of Porphyrin-Phenazine Conjugate to Four-Stranded Poly(G). J Fluoresc 2015; 25:1013-21. [PMID: 26076929 DOI: 10.1007/s10895-015-1585-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Accepted: 05/20/2015] [Indexed: 10/23/2022]
Abstract
Binding of a novel cationic porphyrin-imidazophenazine conjugate, TMPyP(3+)-ImPzn, to four-stranded poly(G) was investigated in aqueous solutions of neutral pH under near physiological ionic conditions using absorption, polarized fluorescent spectroscopy and fluorescence titration techniques. In absence of the polymer the conjugate folds into stable internal heterodimer with stacking between the porphyrin and phenazine chromophores. Binding of TMPyP(3+)-ImPzn to poly(G) is realized by two competing ways. At low polymer-to-dye ratio (P/D < 6) outside electrostatic binding of the cationic porphyrin moieties of the conjugate to anionic polynucleotide backbone with their self-stacking is predominant. It is accompanied by heterodimer dissociation and distancing of phenazine moieties from the polymer. This binding mode is characterized by strong quenching of the conjugate fluorescence. Increase of P/D results in the disintegration of the porphyrin stacks and redistribution of the bound conjugate molecules along the polymer chain. At P/D > 10 another binding mode becomes dominant, embedding of TMPyP(3+)-ImPzn heterodimers into poly(G) groove as a whole is occurred.
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12
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Habala L, Bartel C, Giester G, Jakupec MA, Keppler BK, Rompel A. Complexes of N-hydroxyethyl-N-benzimidazolylmethylethylenediaminediacetic acid with group 12 metals and vanadium-Synthesis, structure and bioactivity of the vanadium complex. J Inorg Biochem 2015; 147:147-52. [PMID: 25920686 DOI: 10.1016/j.jinorgbio.2015.04.004] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Revised: 04/03/2015] [Accepted: 04/03/2015] [Indexed: 11/18/2022]
Abstract
Four new complexes of group 12 metals [Zn(II), Cd(II) and Hg(II)], along with vanadyl bound to the ligand N-hydroxyethyl-N-benzimidazolylmethylethylenediaminediacetic acid, have been synthesized and characterized. The structure of the complexes with Zn(II), Hg(II) and V(IV) was determined by X-ray structural analysis. In all observed cases, the symmetry of these complexes was found to be distorted octahedral. The inhibition of protein tyrosine phosphatase 1B by the vanadium(IV) complex was demonstrated. The cytotoxicity of the vanadium(IV) complex was tested in vitro against three cancer cell lines, with a comparison of the activity of the free ligand and of vanadyl acetylacetonate and sodium orthovanadate. The IC50 values of the complex were in the range of 9 to 21μM. Remarkably, cytotoxic potency in the multidrug-resistant non-small cell lung cancer cell line A549 was at least as high as in the broadly chemosensitive ovarian teratocarcinoma cell line CH1(PA-1).
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Affiliation(s)
- Ladislav Habala
- Institut für Biophysikalische Chemie, Fakultät für Chemie, Universität Wien, Althanstr. 14, A-1090 Wien, Austria; Department of Chemical Theory of Drugs, Faculty of Pharmacy, Comenius University, Kalinciakova 8, SK-832 32 Bratislava, Slovakia
| | - Caroline Bartel
- Institut für Anorganische Chemie, Fakultät für Chemie, Universität Wien, Althanstr. 14, A-1090 Wien, Austria
| | - Gerald Giester
- Institut für Mineralogie und Kristallographie, Universität Wien, Althanstr. 14, A-1090 Wien, Austria
| | - Michael A Jakupec
- Institut für Anorganische Chemie, Fakultät für Chemie, Universität Wien, Althanstr. 14, A-1090 Wien, Austria
| | - Bernhard K Keppler
- Institut für Anorganische Chemie, Fakultät für Chemie, Universität Wien, Althanstr. 14, A-1090 Wien, Austria
| | - Annette Rompel
- Institut für Biophysikalische Chemie, Fakultät für Chemie, Universität Wien, Althanstr. 14, A-1090 Wien, Austria.
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Radiosynthesis and Bioevaluation of [68Ga]-Labeled 5,10,15,20-Tetra(4-methylpyridyl)-porphyrin for Possible Application as a PET Radiotracer for Tumor Imaging. Mol Imaging Biol 2014; 17:111-8. [DOI: 10.1007/s11307-014-0760-1] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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