1
|
Salvanou EA, Kolokithas-Ntoukas A, Prokopiou D, Theodosiou M, Efthimiadou E, Koźmiński P, Xanthopoulos S, Avgoustakis K, Bouziotis P. 177Lu-Labeled Iron Oxide Nanoparticles Functionalized with Doxorubicin and Bevacizumab as Nanobrachytherapy Agents against Breast Cancer. Molecules 2024; 29:1030. [PMID: 38474542 DOI: 10.3390/molecules29051030] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 02/20/2024] [Accepted: 02/23/2024] [Indexed: 03/14/2024] Open
Abstract
The use of conventional methods for the treatment of cancer, such as chemotherapy or radiotherapy, and approaches such as brachytherapy in conjunction with the unique properties of nanoparticles could enable the development of novel theranostic agents. The aim of our current study was to evaluate the potential of iron oxide nanoparticles, coated with alginic acid and polyethylene glycol, functionalized with the chemotherapeutic agent doxorubicin and the monoclonal antibody bevacizumab, to serve as a nanoradiopharmaceutical agent against breast cancer. Direct radiolabeling with the therapeutic isotope Lutetium-177 (177Lu) resulted in an additional therapeutic effect. Functionalization was accomplished at high percentages and radiolabeling was robust. The high cytotoxic effect of our radiolabeled and non-radiolabeled nanostructures was proven in vitro against five different breast cancer cell lines. The ex vivo biodistribution in tumor-bearing mice was investigated with three different ways of administration. The intratumoral administration of our functionalized radionanoconjugates showed high tumor accumulation and retention at the tumor site. Finally, our therapeutic efficacy study performed over a 50-day period against an aggressive triple-negative breast cancer cell line (4T1) demonstrated enhanced tumor growth retention, thus identifying the developed nanoparticles as a promising nanobrachytherapy agent against breast cancer.
Collapse
Affiliation(s)
- Evangelia-Alexandra Salvanou
- Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, National Center for Scientific Research "Demokritos", 15341 Athens, Greece
| | | | - Danai Prokopiou
- Laboratory of Inorganic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis-Zografou, 15771 Athens, Greece
| | - Maria Theodosiou
- Laboratory of Inorganic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis-Zografou, 15771 Athens, Greece
| | - Eleni Efthimiadou
- Laboratory of Inorganic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Panepistimiopolis-Zografou, 15771 Athens, Greece
| | - Przemysław Koźmiński
- Centre of Radiochemistry and Nuclear Chemistry, Institute of Nuclear Chemistry and Technology, Dorodna 16 Str., 03-195 Warsaw, Poland
| | - Stavros Xanthopoulos
- Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, National Center for Scientific Research "Demokritos", 15341 Athens, Greece
| | | | - Penelope Bouziotis
- Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, National Center for Scientific Research "Demokritos", 15341 Athens, Greece
| |
Collapse
|
2
|
Stavropoulou AP, Theodosiou M, Sakellis E, Boukos N, Papanastasiou G, Wang C, Tavares A, Corral CA, Gournis D, Chalmpes N, Gobbo OL, Efthimiadou EK. Bimetallic gold-platinum nanoparticles as a drug delivery system coated with a new drug to target glioblastoma. Colloids Surf B Biointerfaces 2022; 214:112463. [PMID: 35316703 DOI: 10.1016/j.colsurfb.2022.112463] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 03/09/2022] [Accepted: 03/14/2022] [Indexed: 01/04/2023]
Abstract
A drug delivery nanosystem of noble bimetallic nanoparticles (NPs) which consists of Au NPs capped with Pt NPs (Au@Pt NPs) is constructed and functionalised with a quinazoline based small molecule (Au@Pt@Q NPs), acting as a theranostic agent against glioblastoma. Two different hydrothermal synthetic procedures for bimetallic Au@Pt NPs are presented and the resulting nanostructures are fully characterised by means of spectroscopic and microscopic methods. The imaging and targeting capacity of the new drug delivery system is assessed through fluorescent optical microscopy and cytotoxicity evaluations. The constructed Au@Pt NPs consist a monodispersed colloidal solution of 25 nm with photoluminescent, fluorescent and X-Ray absorption properties that confirm their diagnostic potential. Haemolysis testing demonstrated that Au@Pt NPs are biocompatible and fluorescent microscopy confirmed their entering the cells. Cytological evaluation of the NPs through MTT assay showed that they do not inhibit the proliferation of control cell line HEK293, whereas they are toxic in U87MG, U251 and D54 glioblastoma cell lines; rendering them selective targeting agents for treating glioblastoma.
Collapse
Affiliation(s)
- Anastasia P Stavropoulou
- Inorganic Chemistry Laboratory, Chemistry Department, National and Kapodistrian University of Athens, Panepistimioupolis, Zografou, Athens, Greece; Institute of Nanoscience and Nanotechnology, NCSR "Demokritos", Agia Paraskevi, Athens, Greece
| | - Maria Theodosiou
- Inorganic Chemistry Laboratory, Chemistry Department, National and Kapodistrian University of Athens, Panepistimioupolis, Zografou, Athens, Greece; Institute of Nanoscience and Nanotechnology, NCSR "Demokritos", Agia Paraskevi, Athens, Greece
| | - Elias Sakellis
- Institute of Nanoscience and Nanotechnology, NCSR "Demokritos", Agia Paraskevi, Athens, Greece
| | - Nikos Boukos
- Institute of Nanoscience and Nanotechnology, NCSR "Demokritos", Agia Paraskevi, Athens, Greece
| | - Giorgos Papanastasiou
- School of Computer Science and Electronic Engineering, University of Essex, Colchester Campus, CO4 3SQ, UK; Edinburgh Imaging Queen's Medical Research Institute, University of Edinburgh, Edinburgh EH16 4TJ, UK
| | - Chengjia Wang
- Edinburgh Imaging Queen's Medical Research Institute, University of Edinburgh, Edinburgh EH16 4TJ, UK
| | - Adriana Tavares
- Edinburgh Imaging Queen's Medical Research Institute, University of Edinburgh, Edinburgh EH16 4TJ, UK
| | - Carlos Alcaide Corral
- Edinburgh Imaging Queen's Medical Research Institute, University of Edinburgh, Edinburgh EH16 4TJ, UK
| | - Dimitrios Gournis
- Department of Materials Science & Engineering, University of Ioannina, 45110 Ioannina, Greece
| | - Nikolaos Chalmpes
- Department of Materials Science & Engineering, University of Ioannina, 45110 Ioannina, Greece
| | - Oliviero L Gobbo
- Trinity College Dublin, School of Pharmacy & Pharmaceutical Sciences, Dublin, Ireland
| | - Eleni K Efthimiadou
- Inorganic Chemistry Laboratory, Chemistry Department, National and Kapodistrian University of Athens, Panepistimioupolis, Zografou, Athens, Greece; Institute of Nanoscience and Nanotechnology, NCSR "Demokritos", Agia Paraskevi, Athens, Greece.
| |
Collapse
|
3
|
Theodosiou M, Sakellis E, Boukos N, Kusigerski V, Kalska-Szostko B, Efthimiadou E. Iron oxide nanoflowers encapsulated in thermosensitive fluorescent liposomes for hyperthermia treatment of lung adenocarcinoma. Sci Rep 2022; 12:8697. [PMID: 35610309 PMCID: PMC9130318 DOI: 10.1038/s41598-022-12687-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 05/05/2022] [Indexed: 02/08/2023] Open
Abstract
Magnetic hyperthermia (MHT) is in the spotlight of nanomedical research for the treatment of cancer employing magnetic iron oxide nanoparticles and their intrinsic capability for heat dissipation under an alternating magnetic field (AMF). Herein we focus on the synthesis of iron oxide nanoflowers (Nfs) of different sizes (15 and 35 nm) and coatings (bare, citrate, and Rhodamine B) while comparing their physicochemical and magnetothermal properties. We encapsulated colloidally stable citrate coated Nfs, of both sizes, in thermosensitive liposomes via extrusion, and RhB was loaded in the lipid bilayer. All formulations proved hemocompatible and cytocompatible. We found that 35 nm Nfs, at lower concentrations than 15 nm Nfs, served better as nanoheaters for magnetic hyperthermia applications. In vitro, magnetic hyperthermia results showed promising therapeutic and imaging potential for RhB loaded magnetoliposomes containing 35 nm Nfs against LLC and CULA cell lines of lung adenocarcinoma.
Collapse
Affiliation(s)
- Maria Theodosiou
- Laboratory of Inorganic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Athens, Greece.,Institute of Nanoscience and Nanotechnology, National Center for Scientific Research "Demokritos", Athens, Greece
| | - Elias Sakellis
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research "Demokritos", Athens, Greece
| | - Nikos Boukos
- Institute of Nanoscience and Nanotechnology, National Center for Scientific Research "Demokritos", Athens, Greece
| | - Vladan Kusigerski
- Institute of Nuclear Sciences Vinca, University of Belgrade, Belgrade, Republic of Serbia
| | | | - Eleni Efthimiadou
- Laboratory of Inorganic Chemistry, Department of Chemistry, National and Kapodistrian University of Athens, Athens, Greece. .,Institute of Nanoscience and Nanotechnology, National Center for Scientific Research "Demokritos", Athens, Greece.
| |
Collapse
|
4
|
Efthimiadou E, Lelovas P, Fragogeorgi E, Boukos N, Balafas V, Loudos G, Kostomitsopoulos Ν, Theodosiou M, Tziveleka A, Kordas G. Retraction notice to “Folic acid mediated endocytosis enhanced by modified multi stimuli nanocontainers for cancer targeting and treatment: Synthesis, characterization, in-vitro and in-vivo evaluation of therapeutic efficacy” [J. Drug Deliv. Sci. Technol. 55 (2020) 101481]. J Drug Deliv Sci Technol 2021. [DOI: 10.1016/j.jddst.2020.102188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
5
|
Efthimiadou E, Lelovas P, Fragogeorgi E, Boukos N, Balafas V, Loudos G, Kostomitsopoulos N, Theodosiou M, Tziveleka A, Kordas G. RETRACTED: Folic acid mediated endocytosis enhanced by modified multi stimuli nanocontainers for cancer targeting and treatment: Synthesis, characterization, in-vitro and in-vivo evaluation of therapeutic efficacy. J Drug Deliv Sci Technol 2020. [DOI: 10.1016/j.jddst.2019.101481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
6
|
Theodosiou M, Boukos N, Sakellis E, Zachariadis M, Efthimiadou EK. Gold nanoparticle decorated pH-sensitive polymeric nanocontainers as a potential theranostic agent. Colloids Surf B Biointerfaces 2019; 183:110420. [DOI: 10.1016/j.colsurfb.2019.110420] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Revised: 07/29/2019] [Accepted: 08/02/2019] [Indexed: 01/06/2023]
|
7
|
Carvalho JE, Theodosiou M, Chen J, Chevret P, Alvarez S, De Lera AR, Laudet V, Croce JC, Schubert M. Lineage-specific duplication of amphioxus retinoic acid degrading enzymes (CYP26) resulted in sub-functionalization of patterning and homeostatic roles. BMC Evol Biol 2017; 17:24. [PMID: 28103795 PMCID: PMC5247814 DOI: 10.1186/s12862-016-0863-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Accepted: 12/21/2016] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND During embryogenesis, tight regulation of retinoic acid (RA) availability is fundamental for normal development. In parallel to RA synthesis, a negative feedback loop controlled by RA catabolizing enzymes of the cytochrome P450 subfamily 26 (CYP26) is crucial. In vertebrates, the functions of the three CYP26 enzymes (CYP26A1, CYP26B1, and CYP26C1) have been well characterized. By contrast, outside vertebrates, little is known about CYP26 complements and their biological roles. In an effort to characterize the evolutionary diversification of RA catabolism, we studied the CYP26 genes of the cephalochordate amphioxus (Branchiostoma lanceolatum), a basal chordate with a vertebrate-like genome that has not undergone the massive, large-scale duplications of vertebrates. RESULTS In the present study, we found that amphioxus also possess three CYP26 genes (CYP26-1, CYP26-2, and CYP26-3) that are clustered in the genome and originated by lineage-specific duplication. The amphioxus CYP26 cluster thus represents a useful model to assess adaptive evolutionary changes of the RA signaling system following gene duplication. The characterization of amphioxus CYP26 expression, function, and regulation by RA signaling demonstrated that, despite the independent origins of CYP26 duplicates in amphioxus and vertebrates, they convergently assume two main roles during development: RA-dependent patterning and protection against fluctuations of RA levels. Our analysis suggested that in amphioxus RA-dependent patterning is sustained by CYP26-2, while RA homeostasis is mediated by CYP26-1 and CYP26-3. Furthermore, comparisons of the regulatory regions of CYP26 genes of different bilaterian animals indicated that a CYP26-driven negative feedback system was present in the last common ancestor of deuterostomes, but not in that of bilaterians. CONCLUSIONS Altogether, this work reveals the evolutionary origins of the RA-dependent regulation of CYP26 genes and highlights convergent functions for CYP26 enzymes that originated by independent duplication events, hence establishing a novel selective mechanism for the genomic retention of gene duplicates.
Collapse
Affiliation(s)
- João E Carvalho
- Sorbonne Universités, UPMC Université Paris 06, CNRS, Laboratoire de Biologie du Développement de Villefranche-sur-Mer, Observatoire Océanologique de Villefranche-sur-Mer, 181 Chemin du Lazaret, 06230, Villefranche-sur-Mer, France
| | - Maria Theodosiou
- Molecular Zoology Team, Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, Université Lyon 1, CNRS, INRA, Ecole Normale Supérieure de Lyon, 46 Allée d'Italie, 69364, Lyon, Cedex 07, France
| | - Jie Chen
- Molecular Zoology Team, Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, Université Lyon 1, CNRS, INRA, Ecole Normale Supérieure de Lyon, 46 Allée d'Italie, 69364, Lyon, Cedex 07, France.,Present Address: Key Laboratory of Freshwater Aquatic Genetic Resources, Shanghai Ocean University, Huchenghuan Road 999, Shanghai, 201306, China
| | - Pascale Chevret
- Laboratoire de Biométrie et Biologie Evolutive, Université de Lyon, Université Lyon 1, CNRS, 43 Boulevard du 11 novembre 1918, 69622, Villeurbanne, France
| | - Susana Alvarez
- Departamento de Química Organica, Facultad de Química, Universidade de Vigo, 36310, Vigo, Spain
| | - Angel R De Lera
- Departamento de Química Organica, Facultad de Química, Universidade de Vigo, 36310, Vigo, Spain
| | - Vincent Laudet
- Molecular Zoology Team, Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, Université Lyon 1, CNRS, INRA, Ecole Normale Supérieure de Lyon, 46 Allée d'Italie, 69364, Lyon, Cedex 07, France.,Present Address: Observatoire Océanologique de Banyuls-sur-Mer, UMR CNRS 7232, Université Pierre et Marie Curie Paris, 1 avenue du Fontaulé, 66650, Banyuls-sur-Mer, France
| | - Jenifer C Croce
- Sorbonne Universités, UPMC Université Paris 06, CNRS, Laboratoire de Biologie du Développement de Villefranche-sur-Mer, Observatoire Océanologique de Villefranche-sur-Mer, 181 Chemin du Lazaret, 06230, Villefranche-sur-Mer, France
| | - Michael Schubert
- Sorbonne Universités, UPMC Université Paris 06, CNRS, Laboratoire de Biologie du Développement de Villefranche-sur-Mer, Observatoire Océanologique de Villefranche-sur-Mer, 181 Chemin du Lazaret, 06230, Villefranche-sur-Mer, France.
| |
Collapse
|
8
|
Koop D, Chen J, Theodosiou M, Carvalho JE, Alvarez S, de Lera AR, Holland LZ, Schubert M. Roles of retinoic acid and Tbx1/10 in pharyngeal segmentation: amphioxus and the ancestral chordate condition. EvoDevo 2014; 5:36. [PMID: 25664163 PMCID: PMC4320481 DOI: 10.1186/2041-9139-5-36] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2014] [Accepted: 08/27/2014] [Indexed: 12/16/2022] Open
Abstract
Background Although chordates descend from a segmented ancestor, the evolution of head segmentation has been very controversial for over 150 years. Chordates generally possess a segmented pharynx, but even though anatomical evidence and gene expression analyses suggest homologies between the pharyngeal apparatus of invertebrate chordates, such as the cephalochordate amphioxus, and vertebrates, these homologies remain contested. We, therefore, decided to study the evolution of the chordate head by examining the molecular mechanisms underlying pharyngeal morphogenesis in amphioxus, an animal lacking definitive neural crest. Results Focusing on the role of retinoic acid (RA) in post-gastrulation pharyngeal morphogenesis, we found that during gastrulation, RA signaling in the endoderm is required for defining pharyngeal and non-pharyngeal domains and that this process involves active degradation of RA anteriorly in the embryo. Subsequent extension of the pharyngeal territory depends on the creation of a low RA environment and is coupled to body elongation. RA further functions in pharyngeal segmentation in a regulatory network involving the mutual inhibition of RA- and Tbx1/10-dependent signaling. Conclusions These results indicate that the involvement of RA signaling and its interactions with Tbx1/10 in head segmentation preceded the evolution of neural crest and were thus likely present in the ancestral chordate. Furthermore, developmental comparisons between different deuterostome models suggest that the genetic mechanisms for pharyngeal segmentation are evolutionary ancient and very likely predate the origin of chordates. Electronic supplementary material The online version of this article (doi:10.1186/2041-9139-5-36) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Demian Koop
- Marine Biology Research Division, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA 92093-0202 USA
| | - Jie Chen
- Institut de Génomique Fonctionnelle de Lyon (CNRS UMR 5242, UCBL, ENS, INRA 1288), Ecole Normale Supérieure de Lyon, 69364 Lyon, Cedex 07, France
| | - Maria Theodosiou
- Institut de Génomique Fonctionnelle de Lyon (CNRS UMR 5242, UCBL, ENS, INRA 1288), Ecole Normale Supérieure de Lyon, 69364 Lyon, Cedex 07, France
| | - João E Carvalho
- Sorbonne Universités, UPMC Université Paris 06, CNRS, UMR 7009, Laboratoire de Biologie du Développement de Villefranche-sur-Mer, Observatoire Océanologique de Villefranche-sur-Mer, 06230 Villefranche-sur-Mer, France ; CNRS, UMR 7009, Laboratoire de Biologie du Développement de Villefranche-sur-Mer, Observatoire Océanologique de Villefranche-sur-Mer, 06230 Villefranche-sur-Mer, France
| | - Susana Alvarez
- Departamento de Química Orgánica, Universidade de Vigo, 33610 Vigo, Spain
| | - Angel R de Lera
- Departamento de Química Orgánica, Universidade de Vigo, 33610 Vigo, Spain
| | - Linda Z Holland
- Marine Biology Research Division, Scripps Institution of Oceanography, University of California San Diego, La Jolla, CA 92093-0202 USA
| | - Michael Schubert
- Sorbonne Universités, UPMC Université Paris 06, CNRS, UMR 7009, Laboratoire de Biologie du Développement de Villefranche-sur-Mer, Observatoire Océanologique de Villefranche-sur-Mer, 06230 Villefranche-sur-Mer, France ; CNRS, UMR 7009, Laboratoire de Biologie du Développement de Villefranche-sur-Mer, Observatoire Océanologique de Villefranche-sur-Mer, 06230 Villefranche-sur-Mer, France
| |
Collapse
|
9
|
Santharam S, Theodosiou M, Thorne S, Clift P, Hudsmith L, De Bono J. 7 Long-Term Follow-Up of ICD in Adult Congenital Heart Disease Patients: A Large Single Centre Experience. Heart 2014. [DOI: 10.1136/heartjnl-2014-306118.7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
|
10
|
Spiro J, Theodosiou M, Doshi S. Automated cardiopulmonary resuscitation: a case study. Emerg Nurse 2014; 21:28-30. [PMID: 24494769 DOI: 10.7748/en2014.02.21.9.28.e1254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Rates of survival after cardiac arrest are low and correlate with the quality of cardiopulmonary resuscitation (CPR). Devices that deliver automated CPR (A-CPR) can provide sustained and effective chest compressions, which are especially useful during patient transfer and while simultaneous invasive procedures are being performed. The use of such devices can also release members of resuscitation teams for other work. This article presents a case study involving a man with acute myocardial infarction complicated by cardiogenic shock and pulmonary oedema. It describes how ED nursing and medical teams worked together to deliver A-CPR, discusses the use of A-CPR devices in a tertiary cardiac centre, and highlights the advantages of using such devices.
Collapse
Affiliation(s)
- Jon Spiro
- Queen Elizabeth Hospital, University Hospitals Birmingham NHS Foundation Trust
| | | | | |
Collapse
|
11
|
|
12
|
Theodosiou M, Rennard JP, Amir-Aslani A. The rise of the professional master's degree: the answer to the postdoc/PhD bubble. Nat Biotechnol 2012; 30:367-8. [PMID: 22491294 DOI: 10.1038/nbt.2180] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
13
|
Theodosiou M, Colin A, Schulz J, Laudet V, Peyrieras N, Nicolas JF, Schubert M, Hirsinger E. Amphioxus spawning behavior in an artificial seawater facility. J Exp Zool B Mol Dev Evol 2011; 316:263-75. [PMID: 21271675 DOI: 10.1002/jez.b.21397] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/30/2010] [Accepted: 11/30/2010] [Indexed: 11/11/2022]
Abstract
Owing to its phylogenetic position at the base of the chordates, the cephalochordate amphioxus is an emerging model system carrying immense significance for understanding the evolution of vertebrate development. One important shortcoming of amphioxus as a model organism has been the unavailability of animal husbandry protocols to maintain amphioxus adults away from the field. Here, we present the first report of successful maintenance and spawning of Branchiostoma lanceolatum adults in a facility run on artificial seawater. B. lanceolatum has been chosen for this study because it is the only amphioxus species that can be induced to spawn. We provide a step-by-step guide for the assembly of such a facility and discuss the day-to-day operations required for successful animal husbandry of B. lanceolatum adults. This work also includes a detailed description of the B. lanceolatum spawning behavior in captivity. Our analysis shows that the induced spawning efficiency is not sex biased, but increases as the natural spawning season progresses. We find that a minor fraction of the animals undergo phases of spontaneous spawning in the tanks and that this behavior is not affected by the treatment used to induce spawning. Moreover, the induced spawning efficiency is not discernibly correlated with spontaneous spawning in the facility. Last, we describe a protocol for long-term cryopreservation of B. lanceolatum sperm. Taken together, this work represents an important step toward further establishing amphioxus as a laboratory animal making it more amenable to experimental research, and hence assists the coming of age of this emerging model.
Collapse
Affiliation(s)
- Maria Theodosiou
- Institut de Génomique Fonctionnelle de Lyon, Université Lyon 1, CNRS UMR5242, INRA 1288, Ecole Normale Supérieure de Lyon, Lyon, France
| | | | | | | | | | | | | | | |
Collapse
|
14
|
Theodosiou M, Laudet V, Schubert M. Erratum to: From carrot to clinic: an overview of the retinoic acid signaling pathway. Cell Mol Life Sci 2010. [DOI: 10.1007/s00018-010-0361-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
15
|
Theodosiou M, Laudet V, Schubert M. From carrot to clinic: an overview of the retinoic acid signaling pathway. Cell Mol Life Sci 2010; 67:1423-45. [PMID: 20140749 DOI: 10.1007/s00018-010-0268-z] [Citation(s) in RCA: 229] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2009] [Revised: 01/06/2010] [Accepted: 01/11/2010] [Indexed: 01/23/2023]
Abstract
Vitamin A is essential for the formation and maintenance of many body tissues. It is also important for embryonic growth and development and can act as a teratogen at critical periods of development. Retinoic acid (RA) is the biologically active form of vitamin A and its signaling is mediated by the RA and retinoid X receptors. In addition to its role as an important molecule during development, RA has also been implicated in clinical applications, both as a potential anti-tumor agent as well as for the treatment of skin diseases. This review presents an overview of how dietary retinoids are converted to RA, hence presenting the major players in RA metabolism and signaling, and highlights examples of treatment applications of retinoids. Moreover, we discuss the origin and diversification of the retinoid pathway, which are important factors for understanding the evolution of ligand-specificity among retinoid receptors.
Collapse
Affiliation(s)
- Maria Theodosiou
- Institut de Génomique Fonctionnelle de Lyon, Université de Lyon (Université Lyon 1, CNRS, INRA, Ecole Normale Supérieure de Lyon), 46 allée d'Italie, 69364 Lyon Cedex 07, France.
| | | | | |
Collapse
|
16
|
Theodosiou M, Poulios A, Xenelis I, Manolopoulos L, Bibas A. Ear, Nose, Throat Manifestations of Wegener's Granulomatosis. Skull Base 2009. [DOI: 10.1055/s-2009-1224450] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
17
|
Poulios A, Theodosiou M, Vamvakidis T, Sengas I, Athanasiadis-Sismanis A. Glomus Jugulare Tumor Case: Conservative Management or Not? Skull Base 2009. [DOI: 10.1055/s-2009-1224485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
|
18
|
Kokotas H, Theodosiou M, Korres G, Grigoriadou M, Ferekidou E, Giannoulia-Karantana A, Petersen MB, Korres S. Sudden hearing loss in a family with GJB2 related progressive deafness. Int J Pediatr Otorhinolaryngol 2008; 72:1735-40. [PMID: 18809215 DOI: 10.1016/j.ijporl.2008.08.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2008] [Revised: 08/07/2008] [Accepted: 08/09/2008] [Indexed: 02/01/2023]
Abstract
Mutations of GJB2, the gene encoding connexin 26, have been associated with prelingual, sensorineural hearing loss of mild to profound severity. One specific mutation, the 35delG, has accounted for the majority of mutations detected in the GJB2 gene in Caucasian populations. Recent studies have described progression of hearing loss in a proportion of cases with GJB2 deafness. We report an unusual family with four 35delG homozygous members, in which the parents were deaf-mute whilst both children had a postlingual progressive hearing loss. Furthermore, the son suffered from sudden hearing loss.
Collapse
Affiliation(s)
- Haris Kokotas
- Department of Genetics, Institute of Child Health, 'Aghia Sophia' Children's Hospital, Thivon & Levadias, 115 27 Athens, Greece.
| | | | | | | | | | | | | | | |
Collapse
|
19
|
Tiam RN, Theodosiou M, Wadehra V. O-10 Endometrial cells in cervical smears: cytological features associated with clinically significant endometrial pathology. Cytopathology 2007. [DOI: 10.1111/j.1365-2303.2007.00500_10.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
20
|
Papadopoulou O, Nikolopoulos T, Theodosiou M, Papacharalampous G, Tzagaroulakis M, Ferekidis E. Surgical Management of Chronic Otitis Media. Skull Base 2007. [DOI: 10.1055/s-2006-958571] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
21
|
Tsiakou M, Nikolopoulos T, Papadopoulou O, Theodosiou M, Pappas S, Tzagaroulakis M, Ferekidis E. Referrals for Auditory Brainstem Responses—Compliance of Otoneurological Patients. Skull Base 2007. [DOI: 10.1055/s-2006-958569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
22
|
Pappas S, Segas J, Papacharalampous G, Theodosiou M, Papadopoulou O, Tzagaroulakis A, Ferekidis E. Sinonasal Ameloblastoma. Skull Base 2007. [DOI: 10.1055/s-2006-958592] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
23
|
Papacharalampous G, Nikolopoulos T, Felekis D, Theodosiou M, Tsiakou M, Tzagaroulakis A, Ferekidis E. Intranasal Sinus Surgery—A Historical Overview. Skull Base 2007. [DOI: 10.1055/s-2006-958602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
24
|
Felekis D, Nikolopoulos T, Papacharalampous G, Theodosiou M, Tsiakou M, Korres S, Tzagaroulakis A, Ferekidis E. Minimal Hearing Loss Leading to the Diagnosis of Temporal Lobe Tumor. Skull Base 2007. [DOI: 10.1055/s-2006-958608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
25
|
Theodosiou M, Monaghan JR, Spencer ML, Voss SR, Noonan DJ. Isolation and characterization of axolotl NPDC-1 and its effects on retinoic acid receptor signaling. Comp Biochem Physiol B Biochem Mol Biol 2007; 147:260-70. [PMID: 17331771 PMCID: PMC2683337 DOI: 10.1016/j.cbpb.2007.01.008] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2006] [Revised: 01/19/2007] [Accepted: 01/19/2007] [Indexed: 12/31/2022]
Abstract
Retinoic acid, a key morphogen in early vertebrate development and tissue regeneration, mediates its effects through the binding of receptors that act as ligand-induced transcription factors. These binding events function to recruit an array of transcription co-regulatory proteins to specific gene promoters. One such co-regulatory protein, neuronal proliferation and differentiation control-1 (NPDC-1), is broadly expressed during mammalian development and functions as an in vitro repressor of retinoic acid receptor (RAR)-mediated transcription. To obtain comparative and developmental insights about NPDC-1 function, we cloned the axolotl (Ambystoma mexicanum) orthologue and measured transcript abundances among tissues sampled during the embryonic and juvenile phases of development, and also during spinal cord regeneration. Structurally, the axolotl orthologue of NPDC-1 retained sequence identity to mammalian sequences in all functional domains. Functionally, we observed that axolotl NPDC-1 mRNA expression peaked late in embryogenesis, with highest levels of expression occurring during the time of limb development, a process regulated by retinoic acid signaling. Also similar to what has been observed in mammals, axolotl NPDC-1 directly interacts with axolotl RAR, modulates axolotl RAR DNA binding, and represses cell proliferation and axolotl RAR-mediated gene transcription. These data justify axolotl as a model to further investigate NPDC-1 and its role in regulating retinoic acid signaling.
Collapse
Affiliation(s)
- Maria Theodosiou
- : Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY 40536, USA
| | - James R Monaghan
- : Department of Biology, University of Kentucky, Lexington, KY 40506, USA
| | - Michael L Spencer
- : Division of Developmental Biology, Cincinnati Children’s Hospital Research Foundation, Cincinnati, OH 45229, USA
| | - S Randal Voss
- : Department of Biology, University of Kentucky, Lexington, KY 40506, USA
| | - Daniel J Noonan
- : Department of Molecular and Cellular Biochemistry, University of Kentucky, Lexington, KY 40536, USA
- Corresponding Author: Department of Molecular and Cellular Biochemistry, University of Kentucky, 741 South Limestone Ave., Lexington, KY 40536, USA, Phone: (859) 257-7498, Fax: (859) 323-1037, e-mail:
| |
Collapse
|
26
|
Spencer ML, Theodosiou M, Noonan DJ. NPDC-1, a novel regulator of neuronal proliferation, is degraded by the ubiquitin/proteasome system through a PEST degradation motif. J Biol Chem 2004; 279:37069-78. [PMID: 15229225 DOI: 10.1074/jbc.m402507200] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
Neural proliferation and differentiation control protein-1 (NPDC-1) is a protein expressed primarily in brain and lung and whose expression can be correlated with the regulation of cellular proliferation and differentiation. Embryonic differentiation in brain and lung has classically been linked to retinoid signaling, and we have recently characterized NPDC-1 as a regulator of retinoic acid-mediated events. Regulators of differentiation and development are themselves highly regulated and usually through multiple mechanisms. One such mechanism, protein degradation via the ubiquitin/proteasome degradation pathway, has been linked to the expression of a number of proteins involved in control of proliferation or differentiation, including cyclin D1 and E2F-1. The data presented here demonstrate that NPDC-1 is likewise degraded by the ubiquitin/proteasome system. MG-132, a proteasome inhibitor, stabilized the expression of NPDC-1 and allowed detection of ubiquitinated NPDC-1 in vivo. A PEST motif (rich in proline, glutamine, serine, and threonine) located in the carboxyl terminus of NPDC-1 was shown to target the protein for degradation. Deletion of the PEST motif increased NPDC-1 protein stability and NPDC-1 inhibitory effect on retinoic acid-mediated transcription. NPDC-1 was phosphorylated by several kinases, including extracellular signal-regulated kinase. Phosphorylation of NPDC-1 increased the in vitro rate of NPDC-1 ubiquitination. The MEK inhibitor, PD-98059, an inhibitor of extracellular signal-regulated activation, also inhibited the formation of ubiquitinated NPDC-1 in vivo. Together these results suggest that retinoic acid signaling can be modulated by the presence of NPDC-1 and that the protein level and activity of NPDC-1 can be regulated by phosphorylation-mediated proteasomal degradation.
Collapse
Affiliation(s)
- Michael L Spencer
- Department of Molecular and Cellular Biochemistry, University of Kentucky Medical Center, 800 Rose Street, Lexington, KY 40536, USA
| | | | | |
Collapse
|
27
|
Henry II KW, Spencer ML, Theodosiou M, Lou D, Noonan DJ. A neuronal-specific differentiation protein that directly modulates retinoid receptor transcriptional activation. Nucl Recept 2003; 1:7. [PMID: 14567757 PMCID: PMC222963 DOI: 10.1186/1478-1336-1-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/20/2003] [Accepted: 09/10/2003] [Indexed: 11/22/2022]
Abstract
Background The specificity of a nuclear receptor's ability to modulate gene expression resides in its ability to bind a specific lipophilic ligand, associate with specific dimerization partners and bind specific DNA sequences in the promoter regions of genes. This sequence of events appears to be the basis for targeting an additional regulatory complex composed of a variety of protein and RNA components that deliver signals for facilitation or inhibition of the RNA polymerase complex. Characterization of the tissue and cell-specific components of these coregulatory complexes appear to be integral to our understanding of nuclear receptor regulation of transcription. Results A novel yeast screen sensitive to retinoid-X receptor (RXR) transcriptional activation resulted in the isolation of the rat homologue of the mouse NPDC-1 gene. NPDC-1 has been shown to be involved in the control of neural cell proliferation and differentiation, possibly through interactions with the cell cycle promoting transcription factor E2F-1. Although the amino acid sequence of NPDC-1 is highly conserved between mouse, rat and human homologues, their tissue specific expression was seen to vary. A potential for direct protein:protein interaction between NPDC-1, RXR and retinoic acid receptor beta (RARβ) was observed in vitro and NPDC-1 facilitated RXR homodimer and RAR-RXR heterodimer DNA binding in vitro. Expression of NPDC-1 was also observed to repress transcription mediated by retinoid receptors as well as by several other nuclear receptor family members, although not in a universal manner. Conclusions These results suggest that NPDC-1, through direct interaction with retinoid receptors, functions to enhance the transcription complex formation and DNA binding function of retinoid receptors, but ultimately repress retinoid receptor-mediated gene expression. As with NPDC-1, retinoids and their receptors have been implicated in brain development and these data provide a point of convergence for NPDC-1 and retinoid mediation of neuronal differentiation.
Collapse
Affiliation(s)
- Kenneth W Henry II
- Department of Molecular and Cellular Biochemistry, University of Kentucky, 800 Rose Street, Lexington, KY 40536, USA
| | - Michael L Spencer
- Department of Molecular and Cellular Biochemistry, University of Kentucky, 800 Rose Street, Lexington, KY 40536, USA
| | - Maria Theodosiou
- Department of Molecular and Cellular Biochemistry, University of Kentucky, 800 Rose Street, Lexington, KY 40536, USA
| | - Dingyuan Lou
- Department of Molecular and Cellular Biochemistry, University of Kentucky, 800 Rose Street, Lexington, KY 40536, USA
| | - Daniel J Noonan
- Department of Molecular and Cellular Biochemistry, University of Kentucky, 800 Rose Street, Lexington, KY 40536, USA
| |
Collapse
|
28
|
Abstract
The hypothesis that nerve growth factor (NGF) and brain-derived neurotrophic factor (BDNF) contribute to hyperalgesia resulting from nerve damage was tested in rats in which the sciatic nerve was partially transected on one side. Administration of antisera raised against NGF and BDNF relieved mechanical and thermal hyperalgesia in these animals. It has been suggested that NGF may elicit hyperalgesia by inducing mast cells to release algesic agents such as serotonin (5-HT). We found that degranulation of mast cells with compound 48/80 relieved mechanical and thermal hyperalgesia produced by nerve damage. We also found that local injection of the 5-HT2A and 5-HT3 receptor antagonists ketanserin and ICS 205-930 into the affected hind paw relieved mechanical hyperalgesia in a dose-dependent fashion. These findings support the idea that in this rat model of hyperalgesia due to peripheral nerve damage, NGF acts on mast cells to induce release of 5-HT, which sensitizes nociceptors. Hyperalgesia due to nerve injury and hyperalgesia due to inflammation may share some common features.
Collapse
Affiliation(s)
- M Theodosiou
- School of Anatomy, University of New South Wales, Sydney NSW 2052, Australia School of Physiology and Pharmacology, University of New South Wales, Sydney NSW 2052, Australia Department of Physiology, Flinders University, Adelaide SA 5001, Australia
| | | | | | | | | | | |
Collapse
|
29
|
Meyers M, Theodosiou M, Acharya S, Odegaard E, Wilson T, Lewis JE, Davis TW, Wilson-Van Patten C, Fishel R, Boothman DA. Cell cycle regulation of the human DNA mismatch repair genes hMSH2, hMLH1, and hPMS2. Cancer Res 1997; 57:206-8. [PMID: 9000555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Hereditary nonpolyposis colorectal cancer is a cancer susceptibility syndrome that has been found to be caused by mutations in any of several genes involved in DNA mismatch repair, including hMSH2, hMLH1, or hPMS2. Recent reports have suggested that hMSH2 and hMLH1 have a role in the regulation of the cell cycle. To determine if these genes are cell cycle regulated, we examined their mRNA and protein levels throughout the cell cycle in IMR-90 normal human lung fibroblasts. We demonstrate that the levels of hMSH2 mRNA and protein do not change appreciably throughout the cell cycle. Although hMLH1 mRNA levels remained constant, there was a modest (approximately 50%) increase in its protein levels during late G1 and S phase. The levels of hPMS2 mRNA fluctuated (decreasing 50% in G1 and increasing 50% in S phase), whereas hPMS2 protein levels increased 50% in late G1 and S phase. Our data indicate that, at least in normal cells, the machinery responsible for the detection and repair of mismatched DNA bases is present throughout the cell cycle.
Collapse
Affiliation(s)
- M Meyers
- Department of Human Oncology, University of Wisconsin, Madison 53792, USA
| | | | | | | | | | | | | | | | | | | |
Collapse
|
30
|
Lefkopoulou S, Theodosiou M, Stephanidou-Stephanatou J, Alexandrou NE. Mass spectral study of 2-aryl-4-arylhydrazono-4,5,6,7-tetrahydro-2H-benzo-1,2,3-triazoles. J Heterocycl Chem 1986. [DOI: 10.1002/jhet.5570230225] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
|