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Valamvanos TF, Dereka X, Katifelis H, Gazouli M, Lagopati N. Recent Advances in Scaffolds for Guided Bone Regeneration. Biomimetics (Basel) 2024; 9:153. [PMID: 38534838 DOI: 10.3390/biomimetics9030153] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2024] [Revised: 02/26/2024] [Accepted: 02/28/2024] [Indexed: 03/28/2024] Open
Abstract
The rehabilitation of alveolar bone defects of moderate to severe size is often challenging. Currently, the therapeutic approaches used include, among others, the guided bone regeneration technique combined with various bone grafts. Although these techniques are widely applied, several limitations and complications have been reported such as morbidity, suboptimal graft/membrane resorption rate, low structural integrity, and dimensional stability. Thus, the development of biomimetic scaffolds with tailor-made characteristics that can modulate cell and tissue interaction may be a promising tool. This article presents a critical consideration in scaffold's design and development while also providing information on various fabrication methods of these nanosystems. Their utilization as delivery systems will also be mentioned.
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Affiliation(s)
- Theodoros-Filippos Valamvanos
- Laboratory of Biology, Department of Basic Medical Sciences, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Xanthippi Dereka
- Department of Periodontology, School of Dentistry, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Hector Katifelis
- Laboratory of Biology, Department of Basic Medical Sciences, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Maria Gazouli
- Laboratory of Biology, Department of Basic Medical Sciences, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
- School of Science and Technology, Hellenic Open University, 26335 Patra, Greece
| | - Nefeli Lagopati
- Laboratory of Biology, Department of Basic Medical Sciences, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
- Greece Biomedical Research Foundation, Academy of Athens, 11527 Athens, Greece
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Selianitis D, Katifelis H, Gazouli M, Pispas S. Novel Multi-Responsive Hyperbranched Polyelectrolyte Polyplexes as Potential Gene Delivery Vectors. Pharmaceutics 2023; 15:1627. [PMID: 37376075 DOI: 10.3390/pharmaceutics15061627] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 05/29/2023] [Accepted: 05/29/2023] [Indexed: 06/29/2023] Open
Abstract
In this work, we investigate the complexation behavior of poly(oligo(ethylene glycol)methyl methacrylate)-co-poly(2-(diisopropylamino)ethyl methacrylate), P(OEGMA-co-DIPAEMA), hyperbranched polyelectrolyte copolymers, synthesized by reversible addition fragmentation chain transfer (RAFT) polymerization, with short-linear DNA molecules. The synthesized hyperbranched copolymers (HBC), having a different chemical composition, are prepared in order to study their ability to bind with a linear nucleic acid at various N/P ratios (amine over phosphate groups). Specifically, the three pH and thermo-responsive P(OEGMA-co-DIPAEMA) hyperbranched copolymers were able to form polyplexes with DNA, with dimensions in the nanoscale. Using several physicochemical methods, such as dynamic and electrophoretic light scattering (DLS, ELS), as well as fluorescence spectroscopy (FS), the complexation process and the properties of formed polyplexes were explored in response to physical and chemical stimuli such as temperature, pH, and ionic strength. The mass and the size of polyplexes are shown to be affected by the hydrophobicity of the copolymer utilized each time, as well as the N/P ratio. Additionally, the stability of polyplexes in the presence of serum proteins is found to be excellent. Finally, the multi-responsive hyperbranched copolymers were evaluated regarding their cytotoxicity via in vitro experiments on HEK 293 non-cancerous cell lines and found to be sufficiently non-toxic. Based on our results, these polyplexes could be useful candidates for gene delivery and related biomedical applications.
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Affiliation(s)
- Dimitrios Selianitis
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece
| | - Hector Katifelis
- Laboratory of Biology, Department of Basic Medical Science, School of Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Maria Gazouli
- Laboratory of Biology, Department of Basic Medical Science, School of Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Stergios Pispas
- Theoretical and Physical Chemistry Institute, National Hellenic Research Foundation, 48 Vassileos Constantinou Avenue, 11635 Athens, Greece
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Grammatikaki S, Katifelis H, Stravodimos K, Bakolas E, Kavantzas N, Grigoriadou D, Gazouli M. The Role of HIF1-related Genes and Non-coding RNAs Expression in Clear Cell Renal Cell Carcinoma. In Vivo 2023; 37:1103-1110. [PMID: 37103094 DOI: 10.21873/invivo.13185] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 03/28/2023] [Accepted: 03/30/2023] [Indexed: 04/28/2023]
Abstract
BACKGROUND/AIM Renal cell carcinoma is one of the three most common malignant urologic tumors, with clear cell renal cell carcinoma (ccRCC) representing its most common subtype. Although nephrectomy can radically cure the disease, a large percentage of patients is diagnosed when metastatic sites are present and thus alternative, pharmaceutical approaches need to be sought. Since HIF1 up-regulates the transcription of genes that range from metabolic enzymes to non-coding RNAs, and is a key molecule of ccRCC pathogenesis, this study aimed to investigate the expression ALDOA, SOX-6, and non-coding RNAs (mir-122, mir-1271, and MALAT-1) in samples from ccRCC patients. PATIENTS AND METHODS Tumor and adjacent normal tissue samples from 14 patients with ccRCC were harvested. Expression of ALDOA, mir-122, mir-1271, and MALAT-1 mRNA was estimated using real time PCR, whereas the expression of SOX-6 protein was investigated using immunohistochemistry. RESULTS Up-regulation of HIF1 was observed, accompanied with up-regulation of ALDOA, MALAT-1, and mir-122. On the contrary, the expression of mir-1271 was found to be reduced, a finding that can be attributed to a potential MALAT-1 sponge function. Furthermore, SOX-6 protein levels (a transcription factor with tumor suppressing properties) were also reduced. CONCLUSION The observed dysregulated expression levels highlight the importance of ALDOA, MALAT-1, mir-122, mir-1271, and SOX-6, which remain less studied than the known and well-studied HIF1 pathways of VEGF, TGF-α, and EPO. Furthermore, inhibition of the up-regulated ALDOA, mir-122, and MALAT-1 could be of therapeutic interest for selected ccRCC patients.
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Affiliation(s)
- Stamatiki Grammatikaki
- Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Hector Katifelis
- Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Konstantinos Stravodimos
- 1 Department of Urology, National & Kapodistrian University of Athens, Laiko Hospital, Athens, Greece
| | - Emmanouil Bakolas
- 1 Department of Urology, National & Kapodistrian University of Athens, Laiko Hospital, Athens, Greece
| | - Nikolaos Kavantzas
- 2 Department of Pathology, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Dimitra Grigoriadou
- 2 Department of Pathology, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Maria Gazouli
- Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, Athens, Greece;
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Politakis D, Vagena I, Pippa N, Katifelis H, Gorgoulis V, Efstathopoulos E, Gazouli M, Lagopati N. PHOTOCATALYTIC ANTICANCER EFFECT OF TITANIUM DIOXIDE IN SILICO AND IN VITRO. Phys Med 2022. [DOI: 10.1016/s1120-1797(22)03074-5] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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Vagena I, Politakis D, Katifelis H, Gatou M, Pavlatou E, Efstathopoulos E, Gazouli M, Lagopati N. BIOLOGICAL EFFECT OF PHOTOCATALYTIC NANOPARTICLES. Phys Med 2022. [DOI: 10.1016/s1120-1797(22)03182-9] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
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Martinou M, Katifelis H, Gialafos E, Atliev KT, Papiris S, Gazouli M. Association of BAFF and BAFF-R polymorphisms with sarcoidosis in a Greek patient cohort. Arch Med Sci 2022; 19:672-677. [PMID: 37313206 PMCID: PMC10259409 DOI: 10.5114/aoms/154019] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Accepted: 09/13/2022] [Indexed: 09/11/2023] Open
Abstract
INTRODUCTION Sarcoidosis is a disease that results from a combination of environmental and genetic factors. Its genetic basis however, is yet to be clarified. The purpose of this study is to determine whether single nucleotide polymorphisms (SNPs) of the B-cell activating factor (BAFF) and its receptor (BAFF-R) are associated with sarcoidosis. MATERIAL AND METHODS Blood samples from one hundred and seventy-three sarcoidosis patients and one hundred and sixty-four controls were collected. All samples were genotyped for BAFF rs2893321, rs1041569 and rs9514828, and for BAFF-R rs61756766. RESULTS Out of the three BAFF polymorphisms, none genotype had any significant association with sarcoidosis, although the T allele in rs1041569 and rs9514828 was overrepresented in sarcoidosis patients. A marginally significant association with sarcoidosis was found in the case of the CT genotype and T allele of BAFF-R rs61756766. Haplotype analysis of the BAFF polymorphisms was also performed, revealing an overrepresentation of the ATT, GTA and GTT haplotypes in the group of patients with cardiac involvement. CONCLUSIONS Taken together, the results of this study suggest a possible relationship between BAFF SNPs, rs1041569 and rs9514828, and BAFF-R SNP rs61756766 with sarcoidosis susceptibility and their potential as biomarkers for the disease.
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Affiliation(s)
- Maria Martinou
- Laboratory of Biology, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Hector Katifelis
- Laboratory of Biology, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
| | - Elias Gialafos
- First Department of Neurology, Medical School, Aeginition Hospital, National and Kapodistrian University of Athens, Athens, Greece
| | - Kiril Todorov Atliev
- Department of Urology and General Medicine, Faculty of Medicine, Medical University of Plovdiv, Plovdiv, Bulgaria
| | - Spiridon Papiris
- 2 Respiratory Medicine Department, “Attikon” University Hospital, Chaidari, Athens, Greece
| | - Maria Gazouli
- Laboratory of Biology, School of Medicine, National and Kapodistrian University of Athens, Athens, Greece
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Katifelis H, Filidou E, Psaraki A, Yakoub F, Roubelakis MG, Tarapatzi G, Vradelis S, Bamias G, Kolios G, Gazouli M. Amniotic Fluid-Derived Mesenchymal Stem/Stromal Cell-Derived Secretome and Exosomes Improve Inflammation in Human Intestinal Subepithelial Myofibroblasts. Biomedicines 2022; 10:2357. [PMID: 36289619 PMCID: PMC9598363 DOI: 10.3390/biomedicines10102357] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 09/15/2022] [Accepted: 09/19/2022] [Indexed: 08/29/2023] Open
Abstract
Inflammatory Bowel Diseases (IBDs) are characterized by chronic relapsing inflammation of the gastrointestinal tract. The mesenchymal stem/stromal cell-derived secretome and secreted extracellular vesicles may offer novel therapeutic opportunities in patients with IBD. Thus, exosomes may be utilized as a novel cell-free approach for IBD therapy. The aim of our study was to examine the possible anti-inflammatory effects of secretome/exosomes on an IBD-relevant, in vitro model of LPS-induced inflammation in human intestinal SubEpithelial MyoFibroblasts (SEMFs). The tested CM (Conditioned Media)/exosomes derived from a specific population of second-trimester amniotic fluid mesenchymal stem/stromal cells, the spindle-shaped amniotic fluid MSCs (SS-AF-MSCs), and specifically, their secreted exosomes could be utilized as a novel cell-free approach for IBD therapy. Therefore, we studied the effect of SS-AF-MSCs CM and exosomes on LPS-induced inflammation in SEMF cells. SS-AF-MSCs CM and exosomes were collected, concentrated, and then delivered into the cell cultures. Administration of both secretome and exosomes derived from SS-AF-MSCs reduced the severity of LPS-induced inflammation. Specifically, IL-1β, IL-6, TNF-α, and TLR-4 mRNA expression was decreased, while the anti-inflammatory IL-10 was elevated. Our results were also verified at the protein level, as secretion of IL-1β was significantly reduced. Overall, our results highlight a cell-free and anti-inflammatory therapeutic agent for potential use in IBD therapy.
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Affiliation(s)
- Hector Katifelis
- Department of Basic Medical Sciences, Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Eirini Filidou
- Laboratory of Pharmacology, Faculty of Medicine, Democritus University of Thrace, 68100 Alexandroupolis, Greece
| | - Adriana Psaraki
- Department of Basic Medical Sciences, Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Farinta Yakoub
- Department of Basic Medical Sciences, Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Maria G. Roubelakis
- Department of Basic Medical Sciences, Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
- Centre of Basic Research, Biomedical Research Foundation of the Academy of Athens, 11527 Athens, Greece
| | - Gesthimani Tarapatzi
- Laboratory of Pharmacology, Faculty of Medicine, Democritus University of Thrace, 68100 Alexandroupolis, Greece
| | - Stergios Vradelis
- Second Department of Internal Medicine, Faculty of Medicine, Democritus University of Thrace, 68100 Alexandroupolis, Greece
| | - Giorgos Bamias
- GI Unit, Sotiria Hospital, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - George Kolios
- Laboratory of Pharmacology, Faculty of Medicine, Democritus University of Thrace, 68100 Alexandroupolis, Greece
| | - Maria Gazouli
- Department of Basic Medical Sciences, Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
- 2nd Department of Radiology, Medical School, National and Kapodistrian University of Athens, 12462 Athens, Greece
- Department of Sciences, Hellenic Open University, 26335 Patra, Greece
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Spyratou E, Ploussi A, Alafogiannis P, Katifelis H, Apostolopoulou S, Bagenakis G, Rammos S, Papagiannis I, Gazouli M, Seimenis I, Georgakilas AG, Efstathopoulos EP. FDXR Gene Expression after in Vivo Radiation Exposure of Pediatric Patients Undergoing Interventional Cardiology Procedures. FRONT BIOSCI-LANDMRK 2022; 27:255. [PMID: 36224003 DOI: 10.31083/j.fbl2709255] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 06/12/2022] [Revised: 07/19/2022] [Accepted: 07/20/2022] [Indexed: 09/11/2023]
Abstract
BACKGROUND Ferredoxin reductase (FDXR) has already been reported as a promising biomarker for estimating radiation doses in radiotherapy. This study aimed to investigate the responsiveness of FDXR on pediatric population exposed to ionizing radiation (X-rays) during pediatric interventional cardiology (IC) procedures. PATIENTS AND METHODS Peripheral blood was collected by venipuncture from 24 pediatric donors before and 24 hours after the IC procedure. To estimate the effective dose, demographic data and Air Kerma-Area Product (PKA) were recorded for each patient. The relative quantification (RQ) of the FDXR gene in irradiated patient blood samples compared to the non-irradiated blood samples was determined using qPCR analysis. The relative values of FDXR were log- transformed. RESULTS The effective dose ranged from 0.002 mSv to 8.004 mSv. Over this radiation exposure range, the FDXR gene expression varied randomly with the effective dose. Up-regulation in FDXR expression was observed in 17 patients and down-regulation in 7 patients. CONCLUSIONS Further studies in a larger cohort of pediatric patients along with the record of clinical data are needed to determine whether FDXR gene expression is an effective biomarker for radiation exposure estimation in pediatric imaging.
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Affiliation(s)
- Ellas Spyratou
- 2nd Department of Radiology, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Agapi Ploussi
- 2nd Department of Radiology, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Panagiotis Alafogiannis
- Physics Department, School of Applied Mathematical and Physical Sciences, National Technical University of Athens, 15780 Zografou, Athens, Greece
| | - Hector Katifelis
- Department of Basic Medical Sciences, Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Sotiria Apostolopoulou
- Paediatric Cardiology and Adult with Congenital Heart Disease Department, Onassis Cardiac Surgery Center, 17674 Athens, Greece
| | - Georgios Bagenakis
- Paediatric Cardiology and Adult with Congenital Heart Disease Department, Onassis Cardiac Surgery Center, 17674 Athens, Greece
| | - Spyridon Rammos
- Paediatric Cardiology and Adult with Congenital Heart Disease Department, Onassis Cardiac Surgery Center, 17674 Athens, Greece
| | - Ioannis Papagiannis
- Paediatric Cardiology and Adult with Congenital Heart Disease Department, Onassis Cardiac Surgery Center, 17674 Athens, Greece
| | - Maria Gazouli
- Department of Basic Medical Sciences, Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
- Department of Medical Physics, Medical School, National and Kapodistrian University, 11527 Athens, Greece
- Department of Sciences, Hellenic Open University, 26335 Patra, Greece
| | - Ioannis Seimenis
- Department of Medical Physics, Medical School, National and Kapodistrian University, 11527 Athens, Greece
| | - Alexandros G Georgakilas
- DNA Damage Laboratory, Department of Physics, School of Applied Mathematical and Physical Sciences, Zografou Campus, National Technical University of Athens (NTUA), 15780 Athens, Greece
| | - Efstathios P Efstathopoulos
- 2nd Department of Radiology, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
- Department of Sciences, Hellenic Open University, 26335 Patra, Greece
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Georgiou K, Belev NA, Koutouratsas T, Katifelis H, Gazouli M. Gut microbiome: Linking together obesity, bariatric surgery and associated clinical outcomes under a single focus. World J Gastrointest Pathophysiol 2022; 13:59-72. [PMID: 35720165 PMCID: PMC9157685 DOI: 10.4291/wjgp.v13.i3.59] [Citation(s) in RCA: 4] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Revised: 12/21/2021] [Accepted: 03/27/2022] [Indexed: 02/06/2023] Open
Abstract
Obesity is increasingly prevalent in the post-industrial era, with increased mortality rates. The gut microbiota has a central role in immunological, nutritional and metabolism mediated functions, and due to its multiplexity, it is considered an independent organ. Modern high-throughput sequencing techniques have allowed phylogenetic exploration and quantitative analyses of gut microbiome and improved our current understanding of the gut microbiota in health and disease. Its role in obesity and its changes following bariatric surgery have been highlighted in several studies. According to current literature, obesity is linked to a particular microbiota profile that grants the host an augmented potential for calorie release, while limited diversity of gut microbiome has also been observed. Moreover, bariatric surgery procedures represent effective interventions for sustained weight loss and restore a healthier microbiota, contributing to the observed fat mass reduction and lean mass increase. However, newer evidence has shown that gut microbiota is only partially recovered following bariatric surgery. Moreover, several targets including FGF15/19 (a gut-derived peptide), could be responsible for the favorable metabolic changes of bariatric surgery. More randomized controlled trials and larger prospective studies that include well-defined cohorts are required to better identify associations between gut microbiota, obesity, and bariatric surgery.
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Affiliation(s)
- Konstantinos Georgiou
- The First Propaedeutic Surgical Unit, Hippocrateion Athens General Hospital, Medical School, National and Kapodistrian University of Athens, Athens 11527, Greece
| | - Nikolay A Belev
- Medical Simulation Training Center, Research Institute of Medical University of Plovdiv, and UMPHAT “Eurohospital”, Medical University of Plovdiv, Plovdiv 4002, Bulgaria
| | - Tilemachos Koutouratsas
- Basic Medical Sciences, Medical School, National and Kapodistrian University of Athens, Athens 11527, Greece
| | - Hector Katifelis
- Basic Medical Sciences, Medical School, National and Kapodistrian University of Athens, Athens 11527, Greece
| | - Maria Gazouli
- Basic Medical Sciences, Medical School, National and Kapodistrian University of Athens, Athens 11527, Greece
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Katifelis H, Nikou MP, Mukha I, Vityuk N, Lagopati N, Piperi C, Farooqi AA, Pippa N, Efstathopoulos EP, Gazouli M. Ag/Au Bimetallic Nanoparticles Trigger Different Cell Death Pathways and Affect Damage Associated Molecular Pattern Release in Human Cell Lines. Cancers (Basel) 2022; 14:cancers14061546. [PMID: 35326698 PMCID: PMC8946808 DOI: 10.3390/cancers14061546] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [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: 02/21/2022] [Revised: 03/10/2022] [Accepted: 03/17/2022] [Indexed: 02/01/2023] Open
Abstract
Simple Summary Apoptosis is the goal of several therapeutic strategies for cancer. However, the apoptotic pathway is not always functional in many cancers and thus, alternative ways to destroy cancer cells are required. In this context, we investigated whether nanoparticles composed of a gold and silver alloy (AgAu NPs) can induce other programmed cell death pathways. These include necroptosis and pyroptosis, while their effects on the release of molecules that serve as danger signals, the damage associated molecular patterns (DAMPs) were also investigated. Our findings suggest that MDA-MB-231 cells, one of the cancer cell lines tested, experience mixed cell death (several cell death pathways are activated), while a second cell line, HCT116 cells, releases DAMPS. This is important, since necroptosis and pyroptosis have promising anticancer effects, while DAMPs trigger inflammation and current knowledge suggests a rather beneficial role in cancer. Abstract Apoptosis induction is a common therapeutic approach. However, many cancer cells are resistant to apoptotic death and alternative cell death pathways including pyroptosis and necroptosis need to be triggered. At the same time, danger signals that include HMGB1 and HSP70 can be secreted/released by damaged cancer cells that boost antitumor immunity. We studied the cytotoxic effects of AgAu NPs, Ag NPs and Au NPs with regard to the programmed cell death (apoptosis, necroptosis, pyroptosis) and the secretion/release of HSP70 and HMGB1. Cancer cell lines were incubated with 30, 40 and 50 μg/mL of AgAu NPs, Ag NPs and Au NPs. Cytotoxicity was estimated using the MTS assay, and mRNA fold change of CASP1, CASP3, BCL-2, ZPB1, HMGB1, HSP70, CXCL8, CSF1, CCL20, NLRP3, IL-1β and IL-18 was used to investigate the associated programmed cell death. Extracellular levels of HMGB1 and IL-1β were investigated using the ELISA technique. The nanoparticles showed a dose dependent toxicity. Pyroptosis was triggered for LNCaP and MDA-MB-231 cells, and necroptosis for MDA-MB-231 cells. HCT116 cells experience apoptotic death and show increased levels of extracellular HMGB1. Our results suggest that in a manner dependent of the cellular microenvironment, AgAu NPs trigger mixed programmed cell death in P53 deficient MDA-MB-231 cells, while they also trigger IL-1β release in MDA-MB-231 and LNCaP cells and release of HMGB1 in HCT116 cells.
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Affiliation(s)
- Hector Katifelis
- Laboratory of Biology, Department of Basic Medical Sciences, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Maria-Paraskevi Nikou
- Laboratory of Biology, Department of Basic Medical Sciences, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Iuliia Mukha
- Chuiko Institute of Surface Chemistry, National Academy of Sciences of Ukraine, 01030 Kyiv, Ukraine
| | - Nadiia Vityuk
- Chuiko Institute of Surface Chemistry, National Academy of Sciences of Ukraine, 01030 Kyiv, Ukraine
| | - Nefeli Lagopati
- Molecular Carcinogenesis Group, Department of Histology and Embryology, School of Medicine, National and Kapodistrian University of Athens, 11527 Athens, Greece
- Biomedical Research Foundation, Academy of Athens, 11527 Athens, Greece
| | - Christina Piperi
- Laboratory of Biological Chemistry, Department of Basic Medical Sciences, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Ammad Ahmad Farooqi
- Institute of Biomedical and Genetic Engineering (IBGE), Islamabad 44000, Pakistan
| | - Natassa Pippa
- Section of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, 15771 Athens, Greece
| | - Efstathios P Efstathopoulos
- 2nd Department of Radiology, Medical Physics Unit, Medical School, National and Kapodistrian University of Athens, Attikon University Hospital, 12462 Athens, Greece
- School of Science and Technology, Hellenic Open University, 26335 Patra, Greece
| | - Maria Gazouli
- Laboratory of Biology, Department of Basic Medical Sciences, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
- 2nd Department of Radiology, Medical Physics Unit, Medical School, National and Kapodistrian University of Athens, Attikon University Hospital, 12462 Athens, Greece
- School of Science and Technology, Hellenic Open University, 26335 Patra, Greece
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Theofilis P, Vogiatzi G, Oikonomou E, Gazouli M, Siasos G, Katifelis H, Perrea D, Vavouranakis M, Iliopoulos DC, Tsioufis C, Tousoulis D. MicroRNA-126 mimic administration accelerates vascular perfusion recovery and angiogenesis in a hind limb ischemia model. Eur Heart J 2021. [DOI: 10.1093/eurheartj/ehab724.3380] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Peripheral arterial disease caused mainly by atherosclerosis portent significant morbidity, adverse prognosis and mortality, with localized treatment approaches aiming at symptom alleviation and improvement of circulation. Recently, scientific interest has been shifted towards epigenomics, with microRNAs appearing as a future therapeutic target in ischemic cardiovascular diseases due to their potential in regulating angiogenesis.
Purpose
We investigated the pro-angiogenic effect of miRNA-126 mimic in an in vivo model of hind limb ischemia.
Methods
Ten-week-old male C57Bl/6 mice (n=20) were subjected to left femoral artery ligation and were treated with microRNA-126 mimic at a dose of 5mg/kg (Group A, n=10) or 0.2ml normal saline (Group B, n=10) on days 1, 3 and 7. Laser Doppler imaging was performed to verify successful ligation on day 0 and to evaluate differences in the ischemic-to-normal (I/N) hind limb perfusion ratio on day 7 and 28. Muscle tissue expression of microRNA-126 and vascular endothelial growth factor (VEGF) was determined via PCR.
Results
Following microRNA-126 mimic administration in Group A subjects, we noted a qualitative and quantitative stepwise increase in I/N hind limb perfusion ratio [Day 0: 0.354 (0.276, 0.455) vs. Day 8: 0.775 (0.700, 0.844) vs. Day 28: 0.681 (0.660, 0.896), p=0.001] (Figure 1, Panels A and B). In Group B a stepwise increase of lesser magnitude was observed in I/N hind limb perfusion ratio [Day 0: 0.267 (0.164, 0.383) vs. Day 8: 0.400 (0.338, 0.418) vs. Day 28: 0.539 (0.483, 0.603), p=0.074]. Importantly, over time changes of I/N hind limb perfusion ratio were significantly higher in group A compared to group B (p for interaction=0.005) (Figure 1, Panel B). Muscle tissue expression of microRNA-126 in the ischemic hind limb of Group A was 350-fold lower compared to the ischemic hind limb of Group B (p<0.001) (Figure 1, Panel C). A higher expression (14.2-fold) of VEGF in the ischemic hind limb of microRNA-126-treated mice compared to that of control group was detected (p<0.001) (Figure 1, Panel C). A statistically significant negative correlation was noted between microRNA-126 and VEGF tissue expression levels in the ischemic limbs of both Group A and B subjects whereas no correlation between microRNA-126 and VEGF was observed in the non-ischemic hind limbs of the entire study population (Figure 1, Panel D).
Conclusion
MicroRNA-126 mimic delivery in the ischemic hind limb of mice can accelerate vascular perfusion recovery via angiogenesis, which is mediated by VEGF expression.
Funding Acknowledgement
Type of funding sources: None. Figure 1
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Affiliation(s)
- P Theofilis
- Hippokration General Hospital, 1st Department of Cardiology, Athens, Greece
| | - G Vogiatzi
- Hippokration General Hospital, 1st Department of Cardiology, Athens, Greece
| | - E Oikonomou
- Hippokration General Hospital, 1st Department of Cardiology, Athens, Greece
| | - M Gazouli
- National & Kapodistrian University of Athens, Department of Basic Medical Sciences, Athens, Greece
| | - G Siasos
- Hippokration General Hospital, 1st Department of Cardiology, Athens, Greece
| | - H Katifelis
- National & Kapodistrian University of Athens, Department of Basic Medical Sciences, Athens, Greece
| | - D Perrea
- National & Kapodistrian University of Athens, Laboratory of Experimental Surgery and Surgical Research “N.S. Christeas”, Athens, Greece
| | - M Vavouranakis
- Sotiria Regional Chest Diseases Hospital, 3rd Department of Cardiology, Athens, Greece
| | - D C Iliopoulos
- National & Kapodistrian University of Athens, Laboratory of Experimental Surgery and Surgical Research “N.S. Christeas”, Athens, Greece
| | - C Tsioufis
- Hippokration General Hospital, 1st Department of Cardiology, Athens, Greece
| | - D Tousoulis
- Hippokration General Hospital, 1st Department of Cardiology, Athens, Greece
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12
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Theofilis P, Vogiatzi G, Oikonomou E, Gazouli M, Siasos G, Katifelis H, Perrea D, Vavuranakis M, Iliopoulos DC, Tsioufis C, Tousoulis D. The Effect of MicroRNA-126 Mimic Administration on Vascular Perfusion Recovery in an Animal Model of Hind Limb Ischemia. Front Mol Biosci 2021; 8:724465. [PMID: 34513927 PMCID: PMC8423909 DOI: 10.3389/fmolb.2021.724465] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [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: 06/13/2021] [Accepted: 08/16/2021] [Indexed: 01/08/2023] Open
Abstract
Background: MicroRNAs have been linked to angiogenesis and could prove to be valuable future therapeutic targets in ischemic cardiovascular diseases. Methods: Ten-week-old male C57Bl/6 mice were subjected to left femoral artery ligation and were treated with microRNA-126 mimic at a dose of 5 mg/kg (Group A, n = 10) or 5 mg/kg microRNA mimic negative control (Group B, n = 10) on days 1, 3, and 7. Laser Doppler imaging was performed to verify successful ligation on day 0 and to evaluate differences in the ischemic-to-normal (I/N) hind limb perfusion ratio on day 28. Muscle tissue expression of microRNA-126 and vascular endothelial growth factor (VEGF) was determined via PCR. Results: Following microRNA-126 mimic administration in Group A subjects, we noted a stepwise increase in I/N hind limb perfusion ratio (Day 0: 0.364 ± 0.032 vs. Day 8: 0.788 ± 0.049 vs. Day 28: 0.750 ± 0.039, p = 0.001). In Group B a stepwise increase in I/N hind limb perfusion ratio was observed (Day 0: 0.272 ± 0.057 vs. Day 8: 0.382 ± 0.020 vs. Day 28: 0.542 ± 0.028, p = 0.074). Muscle tissue expression of microRNA-126 in the ischemic hind limb of Group A was 350-fold lower compared to the ischemic hind limb of Group B (p < 0.001). A higher expression (14.2-fold) of VEGF in the ischemic hind limb of microRNA-126-treated mice compared to that of control group was detected (p < 0.001). A statistically significant negative correlation was noted between microRNA-126 and VEGF tissue expression levels in the ischemic limbs of the entire study population. Conclusion: MicroRNA-126 delivery in the ischemic hind limb of mice improved vascular perfusion with VEGF upregulation.
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Affiliation(s)
- Panagiotis Theofilis
- First Department of Cardiology, "Hippokration" General Hospital, University of Athens Medical School, Athens, Greece
| | - Georgia Vogiatzi
- First Department of Cardiology, "Hippokration" General Hospital, University of Athens Medical School, Athens, Greece.,Third Department of Cardiology, Thoracic Diseases General Hospital "Sotiria", University of Athens Medical School, Athens, Greece
| | - Evangelos Oikonomou
- First Department of Cardiology, "Hippokration" General Hospital, University of Athens Medical School, Athens, Greece.,Third Department of Cardiology, Thoracic Diseases General Hospital "Sotiria", University of Athens Medical School, Athens, Greece
| | - Maria Gazouli
- Department of Basic Medical Sciences, Laboratory of Biology, National and Kapodistrian University of Athens, Athens, Greece
| | - Gerasimos Siasos
- First Department of Cardiology, "Hippokration" General Hospital, University of Athens Medical School, Athens, Greece.,Third Department of Cardiology, Thoracic Diseases General Hospital "Sotiria", University of Athens Medical School, Athens, Greece
| | - Hector Katifelis
- Department of Basic Medical Sciences, Laboratory of Biology, National and Kapodistrian University of Athens, Athens, Greece
| | - Despoina Perrea
- Laboratory of Experimental Surgery and Surgical Research "N.S. Christeas", University of Athens Medical School, Athens, Greece
| | - Manolis Vavuranakis
- Third Department of Cardiology, Thoracic Diseases General Hospital "Sotiria", University of Athens Medical School, Athens, Greece
| | - Dimitrios C Iliopoulos
- Laboratory of Experimental Surgery and Surgical Research "N.S. Christeas", University of Athens Medical School, Athens, Greece
| | - Costas Tsioufis
- First Department of Cardiology, "Hippokration" General Hospital, University of Athens Medical School, Athens, Greece
| | - Dimitris Tousoulis
- First Department of Cardiology, "Hippokration" General Hospital, University of Athens Medical School, Athens, Greece
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13
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Klonou A, Korkolopoulou P, Gargalionis AN, Kanakoglou DS, Katifelis H, Gazouli M, Chlamydas S, Mitsios A, Kalamatianos T, Stranjalis G, Themistocleous MS, Papavassiliou KA, Sgouros S, Papavassiliou AG, Piperi C. Histone Mark Profiling in Pediatric Astrocytomas Reveals Prognostic Significance of H3K9 Trimethylation and Histone Methyltransferase SUV39H1. Neurotherapeutics 2021; 18:2073-2090. [PMID: 34296393 PMCID: PMC8609021 DOI: 10.1007/s13311-021-01090-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [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] [Accepted: 07/07/2021] [Indexed: 02/04/2023] Open
Abstract
Alterations in global histone methylation regulate gene expression and participate in cancer onset and progression. The profile of histone methylation marks in pediatric astrocytomas is currently understudied with limited data on their distribution among grades. The global expression patterns of repressive histone marks H3K9me3, H3K27me3, and H4K20me3 and active H3K4me3 and H3K36me3 along with their writers SUV39H1, SETDB1, EZH2, MLL2, and SETD2 were investigated in 46 pediatric astrocytomas and normal brain tissues. Associations between histone marks and modifying enzymes with clinicopathological characteristics and disease-specific survival were studied along with their functional impact in proliferation and migration of pediatric astrocytoma cell lines using selective inhibitors in vitro. Upregulation of histone methyltransferase gene expression and deregulation of histone code were detected in astrocytomas compared to normal brain tissues, with higher levels of SUV39H1, SETDB1, and SETD2 as well as H4K20me3 and H3K4me3 histone marks. Pilocytic astrocytomas exhibited lower MLL2 levels compared to diffusely infiltrating tumors indicating a differential pattern of epigenetic regulator expression between the two types of astrocytic neoplasms. Moreover, higher H3K9me3, H3K36me3, and SETDB1 expression was detected in grade IIΙ/IV compared to grade II astrocytomas. In univariate analysis, elevated H3K9me3 and MLL2 and diminished SUV39H1 expression adversely affected survival. Upon multivariate survival analysis, only SUV39H1 expression was revealed as an independent prognostic factor of adverse significance. Treatment of pediatric astrocytoma cell lines with SUV39H1 inhibitor reduced proliferation and cell migration. Our data implicate H3K9me3 and SUV39H1 in the pathobiology of pediatric astrocytomas, with SUV39H1 yielding prognostic information independent of other clinicopathologic variables.
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Affiliation(s)
- Alexia Klonou
- Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Street, 11527, Athens, Greece
| | - Penelope Korkolopoulou
- First Department of Pathology, Medical School, National and Kapodistrian University of Athens, 11527, Athens, Greece
| | - Antonios N Gargalionis
- Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Street, 11527, Athens, Greece
| | - Dimitrios S Kanakoglou
- First Department of Pathology, Medical School, National and Kapodistrian University of Athens, 11527, Athens, Greece
| | - Hector Katifelis
- Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, 11527, Athens, Greece
| | - Maria Gazouli
- Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, 11527, Athens, Greece
| | - Sarantis Chlamydas
- Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Street, 11527, Athens, Greece
| | - Andreas Mitsios
- Department of Neurosurgery, Agia Sofia' Children's Hospital, Medical School, National and Kapodistrian University of Athens, 11527, Athens, Greece
| | - Theodosis Kalamatianos
- Department of Neurosurgery, 'Evangelismos' Hospital, Medical School, National and Kapodistrian University of Athens, 10676, Athens, Greece
| | - George Stranjalis
- Department of Neurosurgery, 'Evangelismos' Hospital, Medical School, National and Kapodistrian University of Athens, 10676, Athens, Greece
| | - Marios S Themistocleous
- Department of Neurosurgery, Agia Sofia' Children's Hospital, Medical School, National and Kapodistrian University of Athens, 11527, Athens, Greece
| | - Kostas A Papavassiliou
- Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Street, 11527, Athens, Greece
| | - Spyros Sgouros
- Department of Pediatric Neurosurgery, 'Mitera' Children's Hospital, Medical School, National and Kapodistrian University of Athens, 15123, Athens, Greece
| | - Athanasios G Papavassiliou
- Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Street, 11527, Athens, Greece.
| | - Christina Piperi
- Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, 75 Mikras Asias Street, 11527, Athens, Greece.
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14
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Farooqi AA, Nayyab S, Martinelli C, Berardi R, Katifelis H, Gazouli M, Cho WC. Regulation of Hippo, TGFβ/SMAD, Wnt/ β-Catenin, JAK/STAT, and NOTCH by Long Non-Coding RNAs in Pancreatic Cancer. Front Oncol 2021; 11:657965. [PMID: 34178644 PMCID: PMC8220219 DOI: 10.3389/fonc.2021.657965] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [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: 01/24/2021] [Accepted: 03/23/2021] [Indexed: 12/12/2022] Open
Abstract
Rapidly evolving and ever-increasing knowledge of the molecular pathophysiology of pancreatic cancer has leveraged our understanding altogether to a next level. Compared to the exciting ground-breaking discoveries related to underlying mechanisms of pancreatic cancer onset and progression, however, there had been relatively few advances in the therapeutic options available for the treatment. Since the discovery of the DNA structure as a helix which replicates semi-conservatively to pass the genetic material to the progeny, there has been conceptual refinement and continuous addition of missing pieces to complete the landscape of central dogma. Starting from transcription to translation, modern era has witnessed non-coding RNA discovery and central role of these versatile regulators in onset and progression of pancreatic cancer. Long non-coding RNAs (lncRNAs) have been shown to act as competitive endogenous RNAs through sequestration and competitive binding to myriad of microRNAs in different cancers. In this article, we set spotlight on emerging evidence of regulation of different signaling pathways (Hippo, TGFβ/SMAD, Wnt/β-Catenin, JAK/STAT and NOTCH) by lncRNAs. Conceptual refinements have enabled us to understand how lncRNAs play central role in post-translational modifications of various proteins and how lncRNAs work with epigenetic-associated machinery to transcriptionally regulate gene network in pancreatic cancer.
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Affiliation(s)
| | - Sawera Nayyab
- Department of Biotechnology, Faculty of Science, University of Sialkot, Sialkot, Pakistan
| | | | - Rossana Berardi
- Università Politecnica delle Marche-Ospedali Riuniti Ancona, Ancona, Italy
| | - Hector Katifelis
- Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Maria Gazouli
- Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - William C Cho
- Department of Clinical Oncology, Queen Elizabeth Hospital, Hong Kong SAR, China
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15
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Katifelis H, Mukha I, Bouziotis P, Vityuk N, Tsoukalas C, Lazaris AC, Lyberopoulou A, Theodoropoulos GE, Efstathopoulos EP, Gazouli M. Ag/Au Bimetallic Nanoparticles Inhibit Tumor Growth and Prevent Metastasis in a Mouse Model. Int J Nanomedicine 2020; 15:6019-6032. [PMID: 32848399 PMCID: PMC7429210 DOI: 10.2147/ijn.s251760] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [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: 04/06/2020] [Accepted: 07/08/2020] [Indexed: 12/17/2022] Open
Abstract
Purpose To evaluate the antitumor efficacy of Ag3Au1Trp1:2NPs in a SCID mouse cancer model, with respect to their effect on tumor growth, on tumor’s metastatic potential and the underlying molecular mechanism. Subjects and Methods Ag3Au1Trp1:2NPs were radiolabeled with Gallium-68 and the biodistribution was studied in Swiss mice without tumors and in SCID mice bearing tumors. SCID mice received intratumoral Ag3Au1Trp1:2NPs and tumor size was measured using calipers. Lung and liver tissues were extracted and studied microscopically for the detection of any metastatic sites. Changes in the Caspase-3 and TNF-related apoptosis-inducing ligand (TRAIL) were also investigated using real-time PCR and Western blot techniques, respectively. Results In the 4T1 tumor-bearing SCID mice, Ag3Au1Trp1:2NPs showed quick passive accumulation at tumor sites at 30 mins post-injection. Mice that received the highest dose of NPs (5.6mg/mL) demonstrated a 1.9-fold lower tumor volume compared to that of the control group at 11 days post-injection, while mice that did not receive NPs showed metastatic sites in liver and lung. Extracted tumor tissue of treated mice revealed increased Casp-3 mRNA levels as well as elevated TRAIL protein levels. Conclusion Based on our results, Ag3Au1Trp1:2NPs express anti-tumor and anti-metastatic effects in vivo. Ag3Au1Trp1:2NPs also reach tumor site via the enhancement and retention effect which results in the apoptotic death of cancerous cells selectively via the extrinsic TRAIL-dependent pathway.
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Affiliation(s)
- Hector Katifelis
- Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Iuliia Mukha
- Chuiko Institute of Surface Chemistry, National Academy of Sciences of Ukraine, Kyiv, Ukraine
| | - Penelope Bouziotis
- Radiochemical Studies Laboratory, Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, National Center for Scientific Research "Demokritos", Athens, Greece
| | - Nadiia Vityuk
- Chuiko Institute of Surface Chemistry, National Academy of Sciences of Ukraine, Kyiv, Ukraine
| | - Charalampos Tsoukalas
- Radiochemical Studies Laboratory, Institute of Nuclear & Radiological Sciences & Technology, Energy & Safety, National Center for Scientific Research "Demokritos", Athens, Greece
| | - Andreas C Lazaris
- 1st Department of Pathology, National and Kapodistrian University of Athens, Athens, Greece
| | - Anna Lyberopoulou
- Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - George E Theodoropoulos
- 1st Propaedeutic University Surgery Clinic, Hippocratio General Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | | | - Maria Gazouli
- Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, Athens, Greece.,2nd Department of Radiology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
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16
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Katifelis H, Sioziou A, Gazouli M, Emmanouil D. ACTN2 (rs6656267) and MPPED2 (rs11031093 and rs536007) polymorphisms in primary dentition caries: A case-control study. Int J Paediatr Dent 2020; 30:478-482. [PMID: 32040219 DOI: 10.1111/ipd.12627] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 02/06/2020] [Accepted: 02/07/2020] [Indexed: 11/29/2022]
Abstract
BACKGROUND Dental caries represents one of the most common human diseases which can lead to pulpitis, pain, and tooth loss and can negatively affect growth and well-being. Although dietary and environmental factors have been extensively studied towards their contribution of the disease, genetic factors that contribute one's susceptibility over caries development remain rather clouded. AIM To investigate the possible contribution of ACTN2 (rs6656267) and MPPED2 (rs11031093 and rs536007) polymorphisms in primary dentition caries. DESIGN Samples from children (5-12 years old) were collected and genotyped for ACTN2 (rs6656267) and MPPED2 (rs11031093 and rs536007) polymorphisms. With regard to dmfs index and socio-economic status, an association between these polymorphisms and primary dentition caries was investigated. RESULTS ACTN2 (rs6655267) and MPPED2 (rs536007) are not associated with primary dentition caries. MPPED2 (rs11031093, G Allele) is marginally associated. CONCLUSIONS MPPED2 (rs11031093, G Allele) is marginally associated with caries susceptibility on primary dentition.
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Affiliation(s)
- Hector Katifelis
- Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Anna Sioziou
- Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Maria Gazouli
- Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Dimitris Emmanouil
- School of Dentistry, National and Kapodistrian University of Athens, Athens, Greece
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17
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Katifelis H, Lyberopoulou A, Vityuk N, Grammatikaki M, Pylypchuk I, Lazaris F, Storozhuk L, Kouloulias V, Gazouli M. In vitro effect of hyperthermic Ag and Au Fe3O4 nanoparticles in cancer cells. J BUON 2020; 25:1212-1218. [PMID: 32521928] [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] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
PURPOSE To investigate the anti-cancer efficacy of hyperthermic Ag and Au Fe3O4 core nanoparticles via cytotoxicity study (MTT assay) and the underlying molecular mechanism of action (changes in gene expression via quantitive real time PCR (qRT-PCR). METHODS HEK293, HCT116, 4T1 and HUH7 human cell lines and 4T1 musculus mammary gland cell line were incubated with Fe3O4 core Ag(Au) shell nanoparticles (NPs) prior to a hyperthermia session. MTT assay was performed to estimate the cytotoxic effects of these NPs. RNA extraction and cDNA synthesis followed so as to quantify mRNA fold change of hsp-70, p53, bcl-2 and casp-3 via qRT-PCR. RESULTS Fe3O4 core Au shell (concentrations of 400 and 600μg/mL) produced the greatest reduction of viability on HCT116 and 4T1 cells while Fe3O4 core Ag shell (200, 400 and 600μg/mL) reduce viability on HUH7 cells. Hsp-70, p53 and casp-3 were up-regulated while bcl-2 was downregulated in most cases. CONCLUSIONS Fe3O4 core Ag (Au) shell induced apoptosis on cancer cells (HCT116 and HUH7) via the p53/bcl-2/casp-3 pathway. 4T1 cells also underwent apoptosis via a p53-independent pathway.
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Affiliation(s)
- Hector Katifelis
- Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
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18
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Lampropoulou DI, Aravantinos G, Katifelis H, Lazaris F, Laschos K, Theodosopoulos T, Papadimitriou C, Gazouli M. Long non-coding RNA polymorphisms and prediction of response to chemotherapy based on irinotecan in patients with metastatic colorectal cancer. Cancer Biomark 2019; 25:213-221. [PMID: 31045514 DOI: 10.3233/cbm-182383] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
BACKGROUND Colorectal cancer is the fourth cause of cancer related death. Drug resistance and toxicity remain major clinical issues. HOTAIR and MALAT1 are long non-coding RNAS that affect cellular proliferation, apoptosis and drug resistance; their up-regulation has been linked with a poor prognosis. OBJECTIVE Investigation of the association between rs4759314 HOTAIR and rs3200401 MALAT1 polymorphisms and irinotecan-based chemotherapy in terms of drug efficacy and toxicity. METHODS Samples from 98 patients receiving different regimens of irinotecan-based therapy were included. Efficacy and toxicity were evaluated. KRAS mutation, rs3200401 HOTAIR and rs4759314 MALAT1 polymorphisms genotyping in the tumors and peripheral blood respectively were performed with PCR. RESULTS Neither rs3200401 MALAT1 nor rs4759314 HOTAIR polymorphism are associated with response to treatment regimens. Rs4759314 was also not associated with increased toxicity in patients receiving irinotecan-based regimens. CT genotype of rs3200401 was associated with significantly reduced overall survival. An association between KRAS mutation and AG/GG genotypes in the rs4759314 was detected. CONCLUSIONS CT genotype of rs3200401 MALAT1 polymorphism could serve as a toxicity biomarker. Carriers of the G allele of the rs4759314 HOTAIR are more likely to be carriers of KRAS mutations too. However, further studies in larger patient populations are required.
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Affiliation(s)
| | - Gerasimos Aravantinos
- Second Department of Medical Oncology, Agii Anargiri Cancer Hospital, Athens, Greece
| | - Hector Katifelis
- Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Foivos Lazaris
- Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Konstantinos Laschos
- Second Department of Medical Oncology, Agii Anargiri Cancer Hospital, Athens, Greece
| | - Theodosios Theodosopoulos
- Second Department of Surgery, Aretaieion Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Christos Papadimitriou
- Second Department of Surgery, Aretaieion Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Maria Gazouli
- Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
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19
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Moschovis D, Vasilaki E, Tzouvala M, Karamanolis G, Katifelis H, Legaki E, Vezakis A, Aravantinos G, Gazouli M. Association between genetic polymorphisms in long non-coding RNAs and pancreatic cancer risk. Cancer Biomark 2019; 24:117-123. [PMID: 30475759 DOI: 10.3233/cbm-181959] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
BACKGROUND Long non-coding RNAs (lncRNAs) are emerging as candidate biomarkers of cancer, having regulatory functions in both oncogenic and tumor-suppressive pathways. Concerning pancreatic cancer (PC), deregulation of lncRNAs involved in tumor initiation, invasion, and metastasis seem to play a key role. However, data is scarce about regulatory mechanism of lncRNA expression. OBJECTIVE The aim of our study was to investigate the contribution of two lncRNAs polymorphisms (rs1561927 and rs4759313 of PVT1 and HOTAIR, respectively) in PC susceptibility. METHODS A case-control study was conducted analysing rs1561927 and rs4759313 polymorphisms using DNA collected in a population-based case-control study of pancreatic cancer (111 pancreatic ductal adenocarcinoma cases (PDAC), 56 pancreatic neuroendocrine tumor (PNET), and 125 healthy controls). RESULTS Regarding the PVT1 rs1561927 polymorphism the G allele was significantly overrepresented in both PDAC and PNET patients compared to the controls, while the presence of the HOTAIR rs4759314 G allele was found to be overrepresented in the PNET patients only compared to the controls. The PVT1 rs1561927 AG/GG genotypes were associated with poor overall survival in PDAC patients. CONCLUSIONS Our results suggested that polymorphisms of these two lncRNA polymorphisms implicated in pancreatic carcinogenesis. Further large-scale and functional studies are needed to confirm our results.
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Affiliation(s)
- D Moschovis
- Department of Gastroenterology, General Hospital of Nikea and Piraeus "Agios Panteleimon", Nikea, Greece
| | - E Vasilaki
- Department of Basic Medical Sciences, Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - M Tzouvala
- Department of Gastroenterology, General Hospital of Nikea and Piraeus "Agios Panteleimon", Nikea, Greece
| | - G Karamanolis
- Academic Department of Gastroenterology, Laiko General Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - H Katifelis
- Department of Basic Medical Sciences, Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - E Legaki
- Department of Basic Medical Sciences, Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - A Vezakis
- Second Department of Surgery, Aretaieion University Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - G Aravantinos
- Second Department of Medical Oncology, Agii Anargiri Cancer Hospital, Athens, Greece
| | - M Gazouli
- Department of Basic Medical Sciences, Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
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20
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Pippa N, Skouras A, Naziris N, Biondo F, Tiboni M, Katifelis H, Gazouli M, Demetzos C, Casettari L. Incorporation of PEGylated δ-decalactone into lipid bilayers: thermodynamic study and chimeric liposomes development. J Liposome Res 2019; 30:209-217. [PMID: 31146618 DOI: 10.1080/08982104.2019.1625377] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Liposomes have been on the market as drug delivery systems for over 25 years. Their success comes from the ability to carry toxic drug molecules to the appropriate site of action through passive accumulation, thus reducing their severe side effects. However, the need for enhanced circulation time and site and time-specific drug delivery turned research focus on other systems, such as polymers. In this context, novel composites that combine the flexibility of polymeric nanosystems with the properties of liposomes gained a lot of interest. In the present work a mixed/chimeric liposomal system, composed of phospholipids and block copolymers, was developed and evaluated in regards with its feasibility as a drug delivery system. These innovative nano-platforms combine advantages from both classes of biomaterials. Thermal analysis was performed in order to offers an insight into the interactions between these materials and consequently into their physicochemical characteristics. In addition, colloidal stability was assessed by monitoring z-potential and size distribution over time. Finally, their suitability as carriers for biomedical applications was evaluated by carrying out in vitro toxicity studies.
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Affiliation(s)
- Natassa Pippa
- Section of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Athens, Greece
| | - Athanasios Skouras
- Department of Life Sciences, School of Sciences, European University Cyprus, Nicosia, Cyprus.,Department of Biomolecular Sciences, University of Urbino, Urbino, Italy
| | - Nikolaos Naziris
- Section of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Athens, Greece
| | - Francesca Biondo
- Department of Biomolecular Sciences, University of Urbino, Urbino, Italy
| | - Mattia Tiboni
- Department of Biomolecular Sciences, University of Urbino, Urbino, Italy
| | - Hector Katifelis
- Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Maria Gazouli
- Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Costas Demetzos
- Section of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens, Athens, Greece
| | - Luca Casettari
- Department of Biomolecular Sciences, University of Urbino, Urbino, Italy
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21
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Katifelis H, Lyberopoulou A, Mukha I, Vityuk N, Grodzyuk G, Theodoropoulos GE, Efstathopoulos EP, Gazouli M. Ag/Au bimetallic nanoparticles induce apoptosis in human cancer cell lines via P53, CASPASE-3 and BAX/BCL-2 pathways. Artificial Cells, Nanomedicine, and Biotechnology 2018; 46:S389-S398. [PMID: 30371113 DOI: 10.1080/21691401.2018.1495645] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Hector Katifelis
- Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Anna Lyberopoulou
- Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | - Iuliia Mukha
- Chuiko Institute of Surface Chemistry, National Academy of Sciences of Ukraine, Kyiv, Ukraine
| | - Nadiia Vityuk
- Chuiko Institute of Surface Chemistry, National Academy of Sciences of Ukraine, Kyiv, Ukraine
| | - Gallina Grodzyuk
- Chuiko Institute of Surface Chemistry, National Academy of Sciences of Ukraine, Kyiv, Ukraine
- L.V. Pisarzhevskii Institute of the Physical Chemistry, National Academy of Sciences of Ukraine, Kyiv, Ukraine
| | - George E. Theodoropoulos
- 1st Propaedeutic University Surgery Clinic, Hippocratio General Hospital, Medical School, National and Kapodistrian University of Athens, Athens, Greece
| | | | - Maria Gazouli
- Laboratory of Biology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
- 2nd Department of Radiology, Medical School, National and Kapodistrian University of Athens, Athens, Greece
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