1
|
Muehlberg F, Mohnike K, Grosser OS, Pech M, Goldschmidt J, Smalla KH, Seidensticker R, Ümütlü MR, Deniz S, Ricke J, Steffen IG, Öcal O, Seidensticker M. In vivo evaluation of tumor uptake and bio-distribution of 99mTc-labeled 1-thio-β-D-glucose and 5-thio-D-glucose in mice model. EJNMMI Radiopharm Chem 2024; 9:26. [PMID: 38551764 PMCID: PMC10980667 DOI: 10.1186/s41181-024-00253-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Accepted: 03/15/2024] [Indexed: 04/01/2024] Open
Abstract
BACKGROUND To investigate the capacity of 99mTc-labeled 1-thio-β-D-glucose (1-TG) and 5-thio-D-glucose (5-TG) to act as a marker for glucose consumption in tumor cells in vivo as well as to evaluate the biodistribution of 1-TG and 5-TG. We investigated the biodistribution, including tumor uptake, of 1-TG and 5-TG at various time points after injection (0.5, 2 and 4 h) in human colorectal carcinoma (HCT-116) and human lung adenocarcinoma (A549) xenograft bearing nude mice (N = 4 per tracer and time point). RESULTS Ex vivo biodistribution studies revealed a moderate uptake with a maximum tumor-to-muscle ratio of 4.22 ± 2.7 and 2.2 ± 1.3 (HCT-116) and of 3.2 ± 1.1 and 4.1 ± 1.3 (A549) for 1-TG and 5-TG, respectively, with a peak at 4 h for 1-TG and 5-TG. Biodistribution revealed a significantly higher uptake compared to blood in kidneys (12.18 ± 8.77 and 12.69 ± 8.93%ID/g at 30 min) and liver (2.6 ± 2.8%ID/g) for 1-TG and in the lung (7.24 ± 4.1%ID/g), liver (6.38 ± 2.94%ID/g), and kidneys (4.71 ± 1.97 and 4.81 ± 1.91%ID/g) for 5-TG. CONCLUSIONS 1-TG and 5-TG showed an insufficient tumor uptake with a moderate tumor-to-muscle ratio, not reaching the levels of commonly used tracer, for diagnostic use in human colorectal carcinoma and human lung adenocarcinoma xenograft model.
Collapse
Affiliation(s)
- Fabian Muehlberg
- Department of Cardiology, MSB Medical School Berlin, Hochschule für Gesundheit und Medizin & HELIOS Hospital Berlin-Buch, Berlin, Germany
| | - Konrad Mohnike
- Department of Radiology and Nuclear Medicine, University Hospital Magdeburg, Magdeburg, Germany
- MVZ DTZ Diagnostisch Therapeutisches Zentrum Am Frankfurter Tor Und MVZ DTZ Diagnostisch Therapeutisches Zentrum Am Onkozentrum Berlin OZB, Berlin, Germany
| | - Oliver S Grosser
- Department of Radiology and Nuclear Medicine, University Hospital Magdeburg, Magdeburg, Germany
- Research Campus STIMULATE, Otto-Von-Guericke University, Magdeburg, Germany
| | - Maciej Pech
- Department of Radiology and Nuclear Medicine, University Hospital Magdeburg, Magdeburg, Germany
| | - Juergen Goldschmidt
- Leibniz Institute for Neurobiology, Department of Neurochemistry and Molecular Biology, Magdeburg, Germany
| | - Karl-Heinz Smalla
- Leibniz Institute for Neurobiology, Research Group Neuroplasticity, Magdeburg, Germany
- Institute for Pharmacology and Toxicology, Medical Faculty, Otto-Von-Guericke University, Magdeburg, Germany
- Center for Behavioral Brain Sciences - CBBS, Otto-Von-Guericke-Universität Magdeburg, Magdeburg, Germany
| | | | | | - Sinan Deniz
- Department of Radiology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Jens Ricke
- Department of Radiology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Ingo G Steffen
- Department of Radiology, LMU University Hospital, LMU Munich, Munich, Germany
- Department of Nuclear Medicine, Charite Universitätsmedizin Berlin, Berlin, Germany
| | - Osman Öcal
- Department of Radiology, LMU University Hospital, LMU Munich, Munich, Germany
| | - Max Seidensticker
- Department of Radiology, LMU University Hospital, LMU Munich, Munich, Germany.
- LMU Klinikum München, Klinik Und Poliklinik Für Radiologie, Marchioninistr 15, 81377, Munich, Germany.
| |
Collapse
|
2
|
Bononi G, Iacopini D, Cicio G, Di Pietro S, Granchi C, Di Bussolo V, Minutolo F. Glycoconjugated Metal Complexes as Cancer Diagnostic and Therapeutic Agents. ChemMedChem 2020; 16:30-64. [PMID: 32735702 DOI: 10.1002/cmdc.202000456] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Indexed: 12/15/2022]
Abstract
The possibility of selectively delivering metal complexes to a defined cohort of cells on the basis of their metabolic features is a highly challenging goal, which may be extremely useful for a series of purposes, including diagnosis and therapy of pathological states, such as cancer. Tumor cells display augmented requests for carbohydrates and, in particular, for glucose in order to sustain their high proliferation rate, which causes an increased glycolytic process (Warburg effect). Since several metal complexes display diagnostic and/or therapeutic properties, their conjugation to carbohydrate portions often induce their preferential accumulation in cancer cells, similarly to what is observed with fluorodeoxyglucose (FDG). In this review we have considered the latest developments of glycoconjugates containing metal complexes in their structures. These compounds are classified as diagnostic or therapeutic agents and are further systematically discussed on the basis of the metal atom they contain. Several diagnostic techniques are possible with these probes, since, depending on the metal species included in their structures, they may be employed in nuclear medicine (PET, SPECT), magnetic resonance imaging, luminescence and phosphorescence. At the same time, the lack of selective cytotoxicity displayed by several metal-based chemotherapeutic agents, may also be solved by the conjugation of these agents to carbohydrate portions. Overall, data so far available reveal the great potential of this chemical class in the early detection and in the cure of severe neoplastic diseases, which still needs to be fully explored in the clinic.
Collapse
Affiliation(s)
- Giulia Bononi
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno Pisano 33, 56126, Pisa, Italy
| | - Dalila Iacopini
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via G. Moruzzi 13, 56124, Pisa, Italy
| | - Gaspare Cicio
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno Pisano 33, 56126, Pisa, Italy.,Current address: Menarini Ricerche S.p.A. -, Laboratori di Pisa, Via Livornese 897, 56122, Pisa, Italy
| | - Sebastiano Di Pietro
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno Pisano 33, 56126, Pisa, Italy
| | - Carlotta Granchi
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno Pisano 33, 56126, Pisa, Italy
| | - Valeria Di Bussolo
- Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via G. Moruzzi 13, 56124, Pisa, Italy
| | - Filippo Minutolo
- Dipartimento di Farmacia, Università di Pisa, Via Bonanno Pisano 33, 56126, Pisa, Italy
| |
Collapse
|
3
|
Zhao Y, Wu Y, Xue B, Jin X, Zhu X. Novel target NIR-fluorescent polymer for living tumor cell imaging. Polym Chem 2019. [DOI: 10.1039/c8py01442f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
A novel NIR-diblock copolymer, PMMA-b-P(GATH-co-BOD), with efficient cancer targeting abilities and excellent biocompatibility was synthesized in this study.
Collapse
Affiliation(s)
- Yanjie Zhao
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| | - Yan Wu
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| | - Bai Xue
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| | - Xin Jin
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| | - Xinyuan Zhu
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Metal Matrix Composites
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| |
Collapse
|
4
|
The Warburg effect and glucose-derived cancer theranostics. Drug Discov Today 2017; 22:1637-1653. [DOI: 10.1016/j.drudis.2017.08.003] [Citation(s) in RCA: 88] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Revised: 07/16/2017] [Accepted: 08/14/2017] [Indexed: 12/20/2022]
|
5
|
|
6
|
Lameijer LN, Hopkins SL, Brevé TG, Askes SHC, Bonnet S. d- Versus l-Glucose Conjugation: Mitochondrial Targeting of a Light-Activated Dual-Mode-of-Action Ruthenium-Based Anticancer Prodrug. Chemistry 2016; 22:18484-18491. [PMID: 27859843 PMCID: PMC5214309 DOI: 10.1002/chem.201603066] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2016] [Indexed: 12/13/2022]
Abstract
Light-activated ruthenium polypyridyl anticancer prodrugs often suffer from poor water solubility, poor selectivity, and/or ill-defined intracellular targets. Coordination of the d- or l-glucose thioether ligand 3 (2-(2-(2-(methylthio)ethoxy)ethoxy)ethyl-β-glucopyranoside) to the highly lipophilic ruthenium complex [Ru(tpy)(dppn)(H2 O)]2+ ([1]2+ ; dppn=benzo[i]dipyrido-[3,2-a:2',3'-c]phenazine, tpy=2,2':6',2''-terpyridine) solved all these problems at once. The two enantiomers of [Ru(tpy)(dppn)(3)][PF6 ]2 , [d-2][PF6 ]2 and [l-2][PF6 ]2 , were soluble in water, which allowed the influence of the chirality of the glucose moiety on uptake, toxicity, and intracellular localization of the prodrug to be probed without changing any other physicochemical properties. Both compounds showed mild, but different, cytotoxicity in A549 (human lung carcinoma) and MCF-7 (human breast adenocarcinoma) cancer cells in the dark, whereas following low doses of visible light irradiation (3.1 J cm-2 at λ = 454 nm), a similar, but high cytotoxicity (EC50 < 1 μm), was observed. Irrespective of the chirality, both slightly emissive Ru complexes were found in the mitochondria, and two modes of action may contribute to light-induced cell death: 1) the glucose thioether ligand is photosubstituted by water, thus [1]2+ , which interacts with DNA at an exceptionally high 400:1 base pair/Ru ratio, is released; 2) both [1]2+ and [2]2+ produce massive amounts of singlet oxygen, which leads to very efficient photodynamic DNA cleavage.
Collapse
Affiliation(s)
- Lucien N. Lameijer
- Leiden Institute of ChemistryLeiden UniversityGorlaeus Laboratories, P.O. Box 95022300 RALeidenThe Netherlands
| | - Samantha L. Hopkins
- Leiden Institute of ChemistryLeiden UniversityGorlaeus Laboratories, P.O. Box 95022300 RALeidenThe Netherlands
| | - Tobias G. Brevé
- Leiden Institute of ChemistryLeiden UniversityGorlaeus Laboratories, P.O. Box 95022300 RALeidenThe Netherlands
| | - Sven H. C. Askes
- Leiden Institute of ChemistryLeiden UniversityGorlaeus Laboratories, P.O. Box 95022300 RALeidenThe Netherlands
| | - Sylvestre Bonnet
- Leiden Institute of ChemistryLeiden UniversityGorlaeus Laboratories, P.O. Box 95022300 RALeidenThe Netherlands
| |
Collapse
|
7
|
Chemical Approach to Positional Isomers of Glucose-Platinum Conjugates Reveals Specific Cancer Targeting through Glucose-Transporter-Mediated Uptake in Vitro and in Vivo. J Am Chem Soc 2016; 138:12541-51. [PMID: 27570149 DOI: 10.1021/jacs.6b06937] [Citation(s) in RCA: 107] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Glycoconjugation is a promising strategy for specific targeting of cancer. In this study, we investigated the effect of d-glucose substitution position on the biological activity of glucose-platinum conjugates (Glc-Pts). We synthesized and characterized all possible positional isomers (C1α, C1β, C2, C3, C4, and C6) of a Glc-Pt. The synthetic routes presented here could, in principle, be extended to prepare glucose conjugates with different active ingredients, other than platinum. The biological activities of the compounds were evaluated both in vitro and in vivo. We discovered that varying the position of substitution of d-glucose alters not only the cellular uptake and cytotoxicity profile but also the GLUT1 specificity of resulting glycoconjugates, where GLUT1 is glucose transporter 1. The C1α- and C2-substituted Glc-Pts (1α and 2) accumulate in cancer cells most efficiently compared to the others, whereas the C3-Glc-Pt (3) is taken up least efficiently. Compounds 1α and 2 are more potent compared to 3 in DU145 cells. The α- and β-anomers of the C1-Glc-Pt also differ significantly in their cellular uptake and activity profiles. No significant differences in uptake of the Glc-Pts were observed in non-cancerous RWPE2 cells. The GLUT1 specificity of the Glc-Pts was evaluated by determining the cellular uptake in the absence and in the presence of the GLUT1 inhibitor cytochalasin B, and by comparing their anticancer activity in DU145 cells and a GLUT1 knockdown cell line. The results reveal that C2-substituted Glc-Pt 2 has the highest GLUT1-specific internalization, which also reflects the best cancer-targeting ability. In a syngeneic breast cancer mouse model overexpressing GLUT1, compound 2 showed antitumor efficacy and selective uptake in tumors with no observable toxicity. This study thus reveals the synthesis of all positional isomers of d-glucose substitution for platinum warheads with detailed glycotargeting characterization in cancer.
Collapse
|
8
|
Zeltchan R, Medvedeva A, Sinilkin I, Bragina O, Chernov V, Stasyuk E, Rogov A, Il'ina E, Larionova L, Skuridin V, Dergilev A. Experimental study of radiopharmaceuticals based on technetium-99m labeled derivative of glucose for tumor diagnosis. ACTA ACUST UNITED AC 2016. [DOI: 10.1088/1757-899x/135/1/012054] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
|
9
|
Wang H, Lu Y, Liu L, Kim SW, Hooker JM, Fowler JS, Tonge PJ. Radiosynthesis and biological evaluation of a novel enoyl-ACP reductase inhibitor for Staphylococcus aureus. Eur J Med Chem 2014; 88:66-73. [PMID: 25217335 DOI: 10.1016/j.ejmech.2014.09.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2014] [Revised: 08/27/2014] [Accepted: 09/03/2014] [Indexed: 11/18/2022]
Abstract
The pharmacokinetics (PK) and pharmacodynamics (PD) of PT119, a potent Staphylococcus aureus enoyl-ACP reductase (saFabI) inhibitor with a Ki value of 0.01 nM and a residence time of 750 min on the enzyme target, has been evaluated in mice. PT119 was found to have promising antibacterial activity in two different S. aureus infection models: it caused a 3 log reduction in the CFU's in a mouse thigh muscle infection model and increased the survival rate from 0% to 50% in a mouse systemic infection model. PT119 was then radiolabeled with carbon-11 to evaluate its biodistribution and PK in both healthy and S. aureus infected mice using positron emission tomography (PET). The biodistribution of [11C]PT119 and/or its labeled metabolites did not differ significantly between the healthy group and the infected group, and PT119 was found to distribute equally between serum and tissue during the ∼1 h of analysis permitted by the carbon-11 half life. This approach provides important data for PK/PD modeling and is the first step in identifying radiotracers that can non-invasively image bacterial infection in vivo.
Collapse
Affiliation(s)
- Hui Wang
- Institute of Chemical Biology & Drug Discovery, Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, USA
| | - Yang Lu
- Institute of Chemical Biology & Drug Discovery, Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, USA
| | - Li Liu
- Institute of Chemical Biology & Drug Discovery, Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, USA
| | - Sung Won Kim
- Biosciences Department, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - Jacob M Hooker
- Biosciences Department, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - Joanna S Fowler
- Biosciences Department, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - Peter J Tonge
- Institute of Chemical Biology & Drug Discovery, Department of Chemistry, Stony Brook University, Stony Brook, NY 11794, USA.
| |
Collapse
|
10
|
Bunschoten A, Welling MM, Termaat MF, Sathekge M, van Leeuwen FWB. Development and Prospects of Dedicated Tracers for the Molecular Imaging of Bacterial Infections. Bioconjug Chem 2013; 24:1971-89. [PMID: 24200346 DOI: 10.1021/bc4003037] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- A. Bunschoten
- Department
of Radiology, Interventional Molecular Imaging Laboratory, Leiden University Medical Center, Leiden, The Netherlands
| | - M. M. Welling
- Department
of Radiology, Interventional Molecular Imaging Laboratory, Leiden University Medical Center, Leiden, The Netherlands
| | - M. F. Termaat
- Department
of Trauma Surgery, Leiden University Medical Center, Leiden, The Netherlands
| | - M. Sathekge
- Department of Nuclear Medicine, University of Pretoria & Steve Biko Academic Hospital, Pretoria, South Africa
| | - F. W. B. van Leeuwen
- Department
of Radiology, Interventional Molecular Imaging Laboratory, Leiden University Medical Center, Leiden, The Netherlands
| |
Collapse
|
11
|
Tumor Cell Uptake of 99mTc-Labeled 1-Thio-β-d-Glucose and 5-Thio-d-Glucose in Comparison with 2-Deoxy-2-[18 F]Fluoro-d-Glucose In Vitro: Kinetics, Dependencies, Blockage and Cell Compartment of Accumulation. Mol Imaging Biol 2013; 16:189-98. [DOI: 10.1007/s11307-013-0690-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
|
12
|
Hoerr V, Tuchscherr L, Hüve J, Nippe N, Loser K, Glyvuk N, Tsytsyura Y, Holtkamp M, Sunderkötter C, Karst U, Klingauf J, Peters G, Löffler B, Faber C. Bacteria tracking by in vivo magnetic resonance imaging. BMC Biol 2013; 11:63. [PMID: 23714179 PMCID: PMC3686665 DOI: 10.1186/1741-7007-11-63] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2013] [Accepted: 05/22/2013] [Indexed: 02/03/2023] Open
Abstract
Background Different non-invasive real-time imaging techniques have been developed over the last decades to study bacterial pathogenic mechanisms in mouse models by following infections over a time course. In vivo investigations of bacterial infections previously relied mostly on bioluminescence imaging (BLI), which is able to localize metabolically active bacteria, but provides no data on the status of the involved organs in the infected host organism. In this study we established an in vivo imaging platform by magnetic resonance imaging (MRI) for tracking bacteria in mouse models of infection to study infection biology of clinically relevant bacteria. Results We have developed a method to label Gram-positive and Gram-negative bacteria with iron oxide nano particles and detected and pursued these with MRI. The key step for successful labeling was to manipulate the bacterial surface charge by producing electro-competent cells enabling charge interactions between the iron particles and the cell wall. Different particle sizes and coatings were tested for their ability to attach to the cell wall and possible labeling mechanisms were elaborated by comparing Gram-positive and -negative bacterial characteristics. With 5-nm citrate-coated particles an iron load of 0.015 ± 0.002 pg Fe/bacterial cell was achieved for Staphylococcus aureus. In both a subcutaneous and a systemic infection model induced by iron-labeled S. aureus bacteria, high resolution MR images allowed for bacterial tracking and provided information on the morphology of organs and the inflammatory response. Conclusion Labeled with iron oxide particles, in vivo detection of small S. aureus colonies in infection models is feasible by MRI and provides a versatile tool to follow bacterial infections in vivo. The established cell labeling strategy can easily be transferred to other bacterial species and thus provides a conceptual advance in the field of molecular MRI.
Collapse
Affiliation(s)
- Verena Hoerr
- Department of Clinical Radiology, University Hospital Münster, Münster 48149, Germany
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
13
|
Fernandes J, Guedes PG, Lage CLS, Rodrigues JCF, Lage CDAS. Tumor malignancy is engaged to prokaryotic homolog toolbox. Med Hypotheses 2012; 78:435-41. [PMID: 22285198 DOI: 10.1016/j.mehy.2011.12.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2011] [Revised: 10/24/2011] [Accepted: 12/29/2011] [Indexed: 11/19/2022]
Abstract
Cancer cells display high proliferation rates and survival provided by high glycolysis, chemoresistance and radioresistance, metabolic features that appear to be activated with malignancy, and seemed to have arisen as early in evolution as in unicellular/prokaryotic organisms. Based on these assumptions, we hypothesize that aggressive phenotypes found in malignant cells may be related to acquired unicellular behavior, launched within a tumor when viral and prokaryotic homologs are overexpressed performing likely robust functions. The ensemble of these expressed viral and prokaryotic close homologs in the proteome of a tumor tissue gives them advantage over normal cells. To assess the hypothesis validity, sequences of human proteins involved in apoptosis, energetic metabolism, cell mobility and adhesion, chemo- and radio-resistance were aligned to homologs present in other life forms, excluding all eukaryotes, using PSI-BLAST, with further corroboration from data available in the literature. The analysis revealed that selected sequences of proteins involved in apoptosis and tumor suppression (as p53 and pRB) scored non-significant (E-value>0.001) with prokaryotic homologs; on the other hand, human proteins involved in cellular chemo- and radio-resistance scored highly significant with prokaryotic and viral homologs (as catalase, E-value=zero). We inferred that such upregulated and/or functionally activated proteins in aggressive malignant cells represent a toolbox of modern human homologs evolved from a similar key set that have granted survival of ancient prokaryotes against extremely harsh environments. According to what has been discussed along this analysis, high mutation rates usually hit hotspots in important conserved protein domains, allowing uncontrolled expansion of more resistant, death-evading malignant clones. That is the case of point mutations in key viral proteins affording viruses escape to chemotherapy, and human homologs of such retroviral proteins (as Ras, Akt and EGFR) can elicit the same phenotype. Furthermore, a corollary to this hypothesis presumes that target-directed anti-cancer therapy should target human protein domains of low similarity to prokaryotic homologs for a well-succeeded anti-cancer therapy.
Collapse
Affiliation(s)
- Janaina Fernandes
- Instituto de Biofísica Carlos Chagas Filho, Pólo Xerém, Universidade Federal do Rio de Janeiro, Brazil.
| | | | | | | | | |
Collapse
|
14
|
Vergara E, Cerrada E, Clavel C, Casini A, Laguna M. Thiolato gold(I) complexes containing water-soluble phosphane ligands: a characterization of their chemical and biological properties. Dalton Trans 2011; 40:10927-35. [PMID: 21904768 DOI: 10.1039/c1dt10892a] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of thiolate gold(I) derivatives bearing water soluble phosphanes--namely sodium triphenylphosphane monosulfonate (TPPMS), sodium triphenylphosphane trisulfonate (TPPTS), 1,3,5-triaza-7-phosphaadamantane (PTA) and 3,7-diacetyl-1,3,7-triaza-5-phosphabicyclo[3.3.1]nonane (DAPTA)--is reported and the compounds studied for their luminescence properties in the solid state. Two of these derivatives, [Au(SMe(2)pyrim)(PTA)] and [Au(SBenzoxazole)(DAPTA)], are also structurally characterized by X-ray diffraction analysis. Strong antiproliferative effects are observed for most of the compounds in the human ovarian carcinoma cell lines (A2780/S) and its cisplatin-resistant variant (A2780/R), which depend on both the type of thiolate and phosphane ligands. ICP-MS studies were also performed to evaluate the influence of the gold uptake on the cytotoxic potency of the compounds.
Collapse
Affiliation(s)
- Elena Vergara
- Departamento de Química Inorgánica, Instituto de Síntesis Química y Catálisis Homogénea (ISQCH)-C.S.I.C, Universidad de Zaragoza, 50009, Zaragoza, Spain
| | | | | | | | | |
Collapse
|
15
|
Zhang S, Zhang W, Wang Y, Jin Z, Wang X, Zhang J, Zhang Y. Synthesis and Biodistribution of a Novel 99mTcN Complex of Norfloxacin Dithiocarbamate as a Potential Agent for Bacterial Infection Imaging. Bioconjug Chem 2011; 22:369-75. [PMID: 21319731 DOI: 10.1021/bc100357w] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Shijian Zhang
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Weifang Zhang
- Peking University 3rd Hospital, Nuclear Medicine Department, Beijing, 100191, China
| | - Yue Wang
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Zhonghui Jin
- Peking University 3rd Hospital, Nuclear Medicine Department, Beijing, 100191, China
| | - Xuebin Wang
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Junbo Zhang
- Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing, 100875, China
| | - Yanyan Zhang
- Peking University 3rd Hospital, Nuclear Medicine Department, Beijing, 100191, China
| |
Collapse
|