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Sytar O, Kotta K, Valasiadis D, Kosyan A, Brestic M, Koidou V, Papadopoulou E, Kroustalaki M, Emmanouilidou C, Pashalidis A, Avdikos I, Hilioti Z. The Effects of Photosensitizing Dyes Fagopyrin and Hypericin on Planktonic Growth and Multicellular Life in Budding Yeast. Molecules 2021; 26:molecules26164708. [PMID: 34443298 PMCID: PMC8398373 DOI: 10.3390/molecules26164708] [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] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2021] [Revised: 07/29/2021] [Accepted: 07/30/2021] [Indexed: 11/25/2022] Open
Abstract
Naphthodianthrones such as fagopyrin and hypericin found mainly in buckwheat (Fagopyrum spp.) and St. John’s wort (SJW) (Hypericum perforatum L.) are natural photosensitizers inside the cell. The effect of photosensitizers was studied under dark conditions on growth, morphogenesis and induction of death in Saccharomyces cerevisiae. Fagopyrin and hypericin induced a biphasic and triphasic dose response in cellular growth, respectively, over a 10-fold concentration change. In fagopyrin-treated cells, disruptions in the normal cell cycle progression were evident by microscopy. DAPI staining revealed several cells that underwent premature mitosis without budding, a striking morphological abnormality. Flow Cytometric (FC) analysis using a concentration of 100 µM showed reduced cell viability by 41% in fagopyrin-treated cells and by 15% in hypericin-treated cells. FC revealed the development of a secondary population of G1 cells in photosensitizer-treated cultures characterized by small size and dense structures. Further, we show that fagopyrin and the closely related hypericin altered the shape and the associated fluorescence of biofilm-like structures. Colonies grown on solid medium containing photosensitizer had restricted growth, while cell-to-cell adherence within the colony was also affected. In conclusion, the photosensitizers under dark conditions affected culture growth, caused toxicity, and disrupted multicellular growth, albeit with different efficiencies.
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Affiliation(s)
- Oksana Sytar
- Educational and Scientific Center “Institute of Biology and Medicine”, Department of Plant Biology, Taras Shevchenko National University of Kyiv, Volodymyrskya str., 64, 01033 Kyiv, Ukraine; (O.S.); (A.K.)
- Department of Plant Physiology, Slovak University of Agriculture in Nitra, A. Hlinku 2, 949 01 Nitra, Slovakia;
| | - Konstantia Kotta
- Institute of Applied Biosciences, Centre for Research & Technology Hellas, 6th km Charilaou-Thermi Road, 57001 Thessaloniki, Greece; (K.K.); (D.V.); (V.K.); (E.P.); (M.K.); (C.E.); (A.P.); (I.A.)
| | - Dimitrios Valasiadis
- Institute of Applied Biosciences, Centre for Research & Technology Hellas, 6th km Charilaou-Thermi Road, 57001 Thessaloniki, Greece; (K.K.); (D.V.); (V.K.); (E.P.); (M.K.); (C.E.); (A.P.); (I.A.)
| | - Anatoliy Kosyan
- Educational and Scientific Center “Institute of Biology and Medicine”, Department of Plant Biology, Taras Shevchenko National University of Kyiv, Volodymyrskya str., 64, 01033 Kyiv, Ukraine; (O.S.); (A.K.)
| | - Marian Brestic
- Department of Plant Physiology, Slovak University of Agriculture in Nitra, A. Hlinku 2, 949 01 Nitra, Slovakia;
| | - Venetia Koidou
- Institute of Applied Biosciences, Centre for Research & Technology Hellas, 6th km Charilaou-Thermi Road, 57001 Thessaloniki, Greece; (K.K.); (D.V.); (V.K.); (E.P.); (M.K.); (C.E.); (A.P.); (I.A.)
| | - Eleftheria Papadopoulou
- Institute of Applied Biosciences, Centre for Research & Technology Hellas, 6th km Charilaou-Thermi Road, 57001 Thessaloniki, Greece; (K.K.); (D.V.); (V.K.); (E.P.); (M.K.); (C.E.); (A.P.); (I.A.)
| | - Maria Kroustalaki
- Institute of Applied Biosciences, Centre for Research & Technology Hellas, 6th km Charilaou-Thermi Road, 57001 Thessaloniki, Greece; (K.K.); (D.V.); (V.K.); (E.P.); (M.K.); (C.E.); (A.P.); (I.A.)
| | - Christina Emmanouilidou
- Institute of Applied Biosciences, Centre for Research & Technology Hellas, 6th km Charilaou-Thermi Road, 57001 Thessaloniki, Greece; (K.K.); (D.V.); (V.K.); (E.P.); (M.K.); (C.E.); (A.P.); (I.A.)
| | - Alexandros Pashalidis
- Institute of Applied Biosciences, Centre for Research & Technology Hellas, 6th km Charilaou-Thermi Road, 57001 Thessaloniki, Greece; (K.K.); (D.V.); (V.K.); (E.P.); (M.K.); (C.E.); (A.P.); (I.A.)
| | - Ilias Avdikos
- Institute of Applied Biosciences, Centre for Research & Technology Hellas, 6th km Charilaou-Thermi Road, 57001 Thessaloniki, Greece; (K.K.); (D.V.); (V.K.); (E.P.); (M.K.); (C.E.); (A.P.); (I.A.)
| | - Zoe Hilioti
- Institute of Applied Biosciences, Centre for Research & Technology Hellas, 6th km Charilaou-Thermi Road, 57001 Thessaloniki, Greece; (K.K.); (D.V.); (V.K.); (E.P.); (M.K.); (C.E.); (A.P.); (I.A.)
- Correspondence: ; Tel.: +30-23-1049-8273
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Koutroumani M, Laidou S, Kotta K, Stamatopoulos K. TAp63 and BCL2 expression are co-affected by cell-extrinsic signals in chronic lymphocytic leukemia. Leuk Lymphoma 2021; 62:3288-3291. [PMID: 34323626 DOI: 10.1080/10428194.2021.1957870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Maria Koutroumani
- Institute of Applied Biosciences, Centre for Research and Technology Hellas, Thessaloniki, Greece
| | - Stamatia Laidou
- Institute of Applied Biosciences, Centre for Research and Technology Hellas, Thessaloniki, Greece
| | - Konstantia Kotta
- Institute of Applied Biosciences, Centre for Research and Technology Hellas, Thessaloniki, Greece
| | - Kostas Stamatopoulos
- Institute of Applied Biosciences, Centre for Research and Technology Hellas, Thessaloniki, Greece.,Department of Molecular Medicine and Surgery, Karolinska Institute, Stockholm, Sweden
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Gavriilidis GI, Ntoufa S, Papakonstantinou N, Kotta K, Koletsa T, Chartomatsidou E, Moysiadis T, Stavroyianni N, Anagnostopoulos A, Papadaki E, Tsiftsoglou AS, Stamatopoulos K. Stem cell factor is implicated in microenvironmental interactions and cellular dynamics of chronic lymphocytic leukemia. Haematologica 2021; 106:692-700. [PMID: 32336682 PMCID: PMC7927890 DOI: 10.3324/haematol.2019.236513] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 08/29/2019] [Indexed: 01/03/2023] Open
Abstract
The inflammatory cytokine stem cell factor (SCF, ligand of c-kit receptor)
has been implicated as a pro-oncogenic driver and an adverse
prognosticator in several human cancers. Increased SCF levels have
recently been reported in a small series of patients with chronic lymphocytic
leukemia (CLL), however its precise role in CLL pathophysiology
remains elusive. In this study, CLL cells were found to express predominantly
the membrane isoform of SCF, which is known to elicit a more
robust activation of the c-kit receptor. SCF was significantly overexpressed
in CLL cells compared to healthy tonsillar B cells and it correlated with
adverse prognostic biomarkers, shorter time-to-first treatment and shorter
overall survival. Activation of immune receptors and long-term cell-cell
interactions with the mesenchymal stroma led to an elevation of SCF primarily
in CLL cases with an adverse prognosis. Contrariwise, suppression
of oxidative stress and the BTK inhibitor ibrutinib lowered SCF levels.
Interestingly, SCF significantly correlated with mitochondrial dynamics
and hypoxia-inducible factor-1a which have previously been linked with
clinical aggressiveness in CLL. SCF was able to elicit direct biological
effects in CLL cells, affecting redox homeostasis and cell proliferation.
Overall, the aberrantly expressed SCF in CLL cells emerges as a key
response regulator to microenvironmental stimuli while correlating with
poor prognosis. On these grounds, specific targeting of this inflammatory
molecule could serve as a novel therapeutic approach in CLL.
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Affiliation(s)
- George I Gavriilidis
- Laboratory of Pharmacology, School of Pharmacy, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Stavroula Ntoufa
- Institute of Applied Biosciences, Centre for Research and Technology Hellas, Thessaloniki, Greece
| | - Nikos Papakonstantinou
- Institute of Applied Biosciences, Centre for Research and Technology Hellas, Thessaloniki, Greece
| | - Konstantia Kotta
- Institute of Applied Biosciences, Centre for Research and Technology Hellas, Thessaloniki, Greece
| | - Triantafyllia Koletsa
- Department of Pathology, Faculty of Medicine, Aristotle University, Thessaloniki, Greece
| | - Elisavet Chartomatsidou
- Institute of Applied Biosciences, Centre for Research and Technology Hellas, Thessaloniki, Greece
| | - Theodoros Moysiadis
- Institute of Applied Biosciences, Centre for Research and Technology Hellas, Thessaloniki, Greece,Department of Molecular Medicine and Surgery, Karolinska Institute, Stockholm, Sweden
| | - Niki Stavroyianni
- Hematology Department and HCT Unit, G. Papanicolaou Hospital, Thessaloniki, Greece
| | | | - Eleni Papadaki
- Department of Medicine, University of Crete, Heraklion, Greece
| | - Asterios S Tsiftsoglou
- Laboratory of Pharmacology, School of Pharmacy, Aristotle University of Thessaloniki, Thessaloniki, Greece
| | - Kostas Stamatopoulos
- Institute of Applied Biosciences, Centre for Research and Technology Hellas, Thessaloniki, Greece,Department of Molecular Medicine and Surgery, Karolinska Institute, Stockholm, Sweden
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Gerousi M, Psomopoulos F, Kotta K, Tsagiopoulou M, Stavroyianni N, Anagnostopoulos A, Anastasiadis A, Gkanidou M, Kotsianidis I, Ntoufa S, Stamatopoulos K. The Calcitriol/Vitamin D Receptor System Regulates Key Immune Signaling Pathways in Chronic Lymphocytic Leukemia. Cancers (Basel) 2021; 13:cancers13020285. [PMID: 33466695 PMCID: PMC7828837 DOI: 10.3390/cancers13020285] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [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: 12/01/2020] [Revised: 01/10/2021] [Accepted: 01/11/2021] [Indexed: 11/19/2022] Open
Abstract
Simple Summary Calcitriol, the biologically active form of vitamin D, modulates a plethora of cellular processes following its receptor ligation, namely the vitamin D receptor (VDR). Epidemiological studies have linked low blood levels of vitamin D to adverse disease outcome in several B cell malignancies, including chronic lymphocytic leukemia (CLL), for as yet undetermined reasons. In this study, we sought to obtain deeper biological insight into the role of vitamin D in the pathophysiology of CLL. To this end, we investigated whether the calcitriol/VDR system is functional in CLL and analyzed key signaling pathways that are regulated by calcitriol supplementation, while also exploring the role of microenvironmental signals in the regulation of calcitriol/VDR system. Overall, we provide evidence that the calcitriol/VDR system is functional in CLL, regulating signaling pathways critical for cell survival/proliferation. Although microenvironmental triggers can modulate VDR expression and function, calcitriol appears to act independently, alluding to a potential clinical utility of vitamin D supplementation in CLL. Abstract It has been proposed that vitamin D may play a role in prevention and treatment of cancer while epidemiological studies have linked vitamin D insufficiency to adverse disease outcomes in various B cell malignancies, including chronic lymphocytic leukemia (CLL). In this study, we sought to obtain deeper biological insight into the role of vitamin D and its receptor (VDR) in the pathophysiology of CLL. To this end, we performed expression analysis of the vitamin D pathway molecules; complemented by RNA-Sequencing analysis in primary CLL cells that were treated in vitro with calcitriol, the biologically active form of vitamin D. In addition, we examined calcitriol effects ex vivo in CLL cells cultured in the presence of microenvironmental signals, namely anti-IgM/CD40L, or co-cultured with the supportive HS-5 cells; and, CLL cells from patients under ibrutinib treatment. Our study reports that the calcitriol/VDR system is functional in CLL regulating signaling pathways critical for cell survival and proliferation, including the TLR and PI3K/AKT pathways. Moreover, calcitriol action is likely independent of the microenvironmental signals in CLL, since it was not significantly affected when combined with anti-IgM/CD40L or in the context of the co-culture system. This finding was also supported by our finding of preserved calcitriol signaling capacity in CLL patients under ibrutinib treatment. Overall, our results indicate a relevant biological role for vitamin D in CLL pathophysiology and allude to the potential clinical utility of vitamin D supplementation in patients with CLL.
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Affiliation(s)
- Marina Gerousi
- Institute of Applied Biosciences, Centre for Research and Technology Hellas, 57001 Thessaloniki, Greece; (M.G.); (F.P.); (K.K.); (M.T.); (S.N.)
- Medical Department, Democritus University of Thrace, 68100 Alexandroupolis, Greece;
| | - Fotis Psomopoulos
- Institute of Applied Biosciences, Centre for Research and Technology Hellas, 57001 Thessaloniki, Greece; (M.G.); (F.P.); (K.K.); (M.T.); (S.N.)
- Department of Molecular Medicine and Surgery, Karolinska Institute, 17177 Stockholm, Sweden
| | - Konstantia Kotta
- Institute of Applied Biosciences, Centre for Research and Technology Hellas, 57001 Thessaloniki, Greece; (M.G.); (F.P.); (K.K.); (M.T.); (S.N.)
| | - Maria Tsagiopoulou
- Institute of Applied Biosciences, Centre for Research and Technology Hellas, 57001 Thessaloniki, Greece; (M.G.); (F.P.); (K.K.); (M.T.); (S.N.)
| | - Niki Stavroyianni
- Hematology Department and HCT Unit, G. Papanikolaou Hospital, 57010 Thessaloniki, Greece; (N.S.); (A.A.)
| | - Achilles Anagnostopoulos
- Hematology Department and HCT Unit, G. Papanikolaou Hospital, 57010 Thessaloniki, Greece; (N.S.); (A.A.)
| | - Athanasios Anastasiadis
- Blood Transfusion Department, G. Papanikolaou Hospital, 57010 Thessaloniki, Greece; (A.A.); (M.G.)
| | - Maria Gkanidou
- Blood Transfusion Department, G. Papanikolaou Hospital, 57010 Thessaloniki, Greece; (A.A.); (M.G.)
| | - Ioannis Kotsianidis
- Medical Department, Democritus University of Thrace, 68100 Alexandroupolis, Greece;
| | - Stavroula Ntoufa
- Institute of Applied Biosciences, Centre for Research and Technology Hellas, 57001 Thessaloniki, Greece; (M.G.); (F.P.); (K.K.); (M.T.); (S.N.)
| | - Kostas Stamatopoulos
- Institute of Applied Biosciences, Centre for Research and Technology Hellas, 57001 Thessaloniki, Greece; (M.G.); (F.P.); (K.K.); (M.T.); (S.N.)
- Department of Molecular Medicine and Surgery, Karolinska Institute, 17177 Stockholm, Sweden
- Correspondence: ; Tel./Fax: +30-231-049-8271
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5
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Zafeiriou Z, Koutoulaki A, Koinis F, Aggouraki D, Vardakis N, Vetsika E, Kotta K, Mavroudis D, Georgoulias V, Kotsakis A. Prognostic significance of circulating regulatory T lymphocytes (Tregs) in patients with metastatic colorectal cancer (mCRC) under treatment with first-line chemotherapy. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz246.087] [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: 11/13/2022] Open
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6
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Papakonstantinou N, Ntoufa S, Chartomatsidou E, Kotta K, Agathangelidis A, Giassafaki L, Karamanli T, Bele P, Moysiadis T, Baliakas P, Sutton LA, Stavroyianni N, Anagnostopoulos A, Makris AM, Ghia P, Rosenquist R, Stamatopoulos K. The histone methyltransferase EZH2 as a novel prosurvival factor in clinically aggressive chronic lymphocytic leukemia. Oncotarget 2017; 7:35946-35959. [PMID: 27191993 PMCID: PMC5094974 DOI: 10.18632/oncotarget.9371] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [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: 11/09/2015] [Accepted: 04/24/2016] [Indexed: 12/19/2022] Open
Abstract
The histone methyltransferase EZH2 induces gene repression through trimethylation of histone H3 at lysine 27 (H3K27me3). EZH2 overexpression has been reported in many types of cancer and associated with poor prognosis. Here we investigated the expression and functionality of EZH2 in chronic lymphocytic leukemia (CLL). Aggressive cases with unmutated IGHV genes (U-CLL) displayed significantly higher EZH2 expression compared to indolent CLL cases with mutated IGHV genes (M-CLL); furthermore, in U-CLL EZH2 expression was upregulated with disease progression. Within U-CLL, EZH2high cases harbored significantly fewer (p = 0.033) TP53 gene abnormalities compared to EZH2low cases. EZH2high cases displayed high H3K27me3 levels and increased viability suggesting that EZH2 is functional and likely confers a survival advantage to CLL cells. This argument was further supported by siRNA-mediated downmodulation of EZH2 which resulted in increased apoptosis. Notably, at the intraclonal level, cell proliferation was significantly associated with EZH2 expression. Treatment of primary CLL cells with EZH2 inhibitors induced downregulation of H3K27me3 levels leading to increased cell apoptosis. In conclusion, EZH2 is overexpressed in adverse-prognosis CLL and associated with increased cell survival and proliferation. Pharmacologic inhibition of EZH2 catalytic activity promotes apoptosis, highlighting EZH2 as a novel potential therapeutic target for specific subgroups of patients with CLL.
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Affiliation(s)
- Nikos Papakonstantinou
- Institute of Applied Biosciences, Center for Research and Technology Hellas, Thessaloniki, Greece.,Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Stavroula Ntoufa
- Institute of Applied Biosciences, Center for Research and Technology Hellas, Thessaloniki, Greece.,Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Elisavet Chartomatsidou
- Institute of Applied Biosciences, Center for Research and Technology Hellas, Thessaloniki, Greece
| | - Konstantia Kotta
- Institute of Applied Biosciences, Center for Research and Technology Hellas, Thessaloniki, Greece
| | - Andreas Agathangelidis
- Division of Experimental Oncology and Department of Onco-Hematology, IRCCS San Raffaele Scientific Institute and Università Vita-Salute San Raffaele, Milan, Italy
| | - Lefki Giassafaki
- Institute of Applied Biosciences, Center for Research and Technology Hellas, Thessaloniki, Greece
| | - Tzeni Karamanli
- Institute of Applied Biosciences, Center for Research and Technology Hellas, Thessaloniki, Greece
| | - Panagiota Bele
- Institute of Applied Biosciences, Center for Research and Technology Hellas, Thessaloniki, Greece
| | - Theodoros Moysiadis
- Institute of Applied Biosciences, Center for Research and Technology Hellas, Thessaloniki, Greece
| | - Panagiotis Baliakas
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Lesley Ann Sutton
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Niki Stavroyianni
- Hematology Department and HCT Unit, G. Papanicolaou Hospital, Thessaloniki, Greece
| | | | - Antonios M Makris
- Institute of Applied Biosciences, Center for Research and Technology Hellas, Thessaloniki, Greece
| | - Paolo Ghia
- Division of Experimental Oncology and Department of Onco-Hematology, IRCCS San Raffaele Scientific Institute and Università Vita-Salute San Raffaele, Milan, Italy
| | - Richard Rosenquist
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Kostas Stamatopoulos
- Institute of Applied Biosciences, Center for Research and Technology Hellas, Thessaloniki, Greece.,Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden.,Hematology Department and HCT Unit, G. Papanicolaou Hospital, Thessaloniki, Greece
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Trikka FA, Nikolaidis A, Athanasakoglou A, Andreadelli A, Ignea C, Kotta K, Argiriou A, Kampranis SC, Makris AM. Iterative carotenogenic screens identify combinations of yeast gene deletions that enhance sclareol production. Microb Cell Fact 2015; 14:60. [PMID: 25903744 PMCID: PMC4413541 DOI: 10.1186/s12934-015-0246-0] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [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: 02/04/2015] [Accepted: 04/17/2015] [Indexed: 02/05/2023] Open
Abstract
Background Terpenoids (isoprenoids) have numerous applications in flavors, fragrances, drugs and biofuels. The number of microbially produced terpenoids is increasing as new biosynthetic pathways are being elucidated. However, efforts to improve terpenoid production in yeast have mostly taken advantage of existing knowledge of the sterol biosynthetic pathway, while many additional factors may affect the output of the engineered system. Results Aiming to develop a yeast strain that can support high titers of sclareol, a diterpene of great importance for the perfume industry, we sought to identify gene deletions that improved carotenoid, and thus potentially sclareol, production. Using a carotenogenic screen, the best 100 deletion mutants, out of 4,700 mutant strains, were selected to create a subset for further analysis. To identify combinations of deletions that cooperate to further boost production, iterative carotenogenic screens were applied, and each time the top performing gene deletions were further ranked according to the number of genetic and physical interactions known for each specific gene. The gene selected in each round was deleted and the resulting strain was employed in a new round of selection. This approach led to the development of an EG60 derived haploid strain combining six deletions (rox1, dos2, yer134c, vba5, ynr063w and ygr259c) and exhibiting a 40-fold increase in carotenoid and 12-fold increase in sclareol titers, reaching 750 mg/L sclareol in shake flask cultivation. Conclusion Using an iterative approach, we identified novel combinations of yeast gene deletions that improve carotenoid and sclareol production titers without compromising strain growth and viability. Most of the identified deletions have not previously been implicated in sterol pathway control. Applying the same approach using a different starting point could yield alternative sets of deletions with similar or improved outcome. Electronic supplementary material The online version of this article (doi:10.1186/s12934-015-0246-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Fotini A Trikka
- Institute of Applied Biosciences/CERTH, P.O. Box 60361, Thermi, 57001, Thessaloniki, Greece.
| | - Alexandros Nikolaidis
- Institute of Applied Biosciences/CERTH, P.O. Box 60361, Thermi, 57001, Thessaloniki, Greece.
| | - Anastasia Athanasakoglou
- Institute of Applied Biosciences/CERTH, P.O. Box 60361, Thermi, 57001, Thessaloniki, Greece. .,Department of Biochemistry, School of Medicine, University of Crete, P.O. Box 2208, Heraklion, 71003, Greece.
| | - Aggeliki Andreadelli
- Institute of Applied Biosciences/CERTH, P.O. Box 60361, Thermi, 57001, Thessaloniki, Greece.
| | - Codruta Ignea
- Department of Biochemistry, School of Medicine, University of Crete, P.O. Box 2208, Heraklion, 71003, Greece.
| | - Konstantia Kotta
- Institute of Applied Biosciences/CERTH, P.O. Box 60361, Thermi, 57001, Thessaloniki, Greece.
| | - Anagnostis Argiriou
- Institute of Applied Biosciences/CERTH, P.O. Box 60361, Thermi, 57001, Thessaloniki, Greece.
| | - Sotirios C Kampranis
- Department of Biochemistry, School of Medicine, University of Crete, P.O. Box 2208, Heraklion, 71003, Greece.
| | - Antonios M Makris
- Institute of Applied Biosciences/CERTH, P.O. Box 60361, Thermi, 57001, Thessaloniki, Greece.
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8
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Zacharaki D, Lagoudaki R, Touloumi O, Kotta K, Voultsiadou A, Poulatsidou KN, Lourbopoulos A, Hadjigeorgiou G, Dardiotis E, Karacostas D, Grigoriadis N. Characterization of in vitro expanded bone marrow-derived mesenchymal stem cells isolated from experimental autoimmune encephalomyelitis mice. J Mol Neurosci 2013; 51:282-97. [PMID: 23532769 DOI: 10.1007/s12031-013-9992-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2012] [Accepted: 03/03/2013] [Indexed: 02/06/2023]
Abstract
Extensive experimental studies indicate that autologous bone marrow mesenchymal stem cells (BMSCs) are able to ameliorate experimental autoimmune encephalomyelitis (EAE) and potentially multiple sclerosis. However, the impact that the inflammatory environment present in EAE may have on the biological properties of BMSCs expanded in vitro for transplantation is yet to be clarified. It was investigated whether BMSCs isolated from EAE-induced C57bl6/J mice and expanded in vitro preserve the properties of BMSCs isolated from healthy donors (BMSCs-control). The mesenchymal origin, the differentiation potential, and the transcriptional expression profile of six histone-modifying genes were studied in both groups of BMSCs. BMSCs-EAE exhibited distinct morphology and larger size compared to BMSCs-control, higher degree of proliferation and apoptosis, differences in the adipogenesis and the osteogenesis induction, and differential expression of stromal markers and markers of progenitor and mature neuronal/glial cells. Moreover, BMSCs-EAE exhibited different expression patterns on a number of histone-modifying genes compared to controls. We recorded manifold differences, both phenotypical and functional, of in vitro expanded BMSCs-EAE in comparison to their healthy donor-derived counterparts that may be attributed to the inflammatory environment they originated from. Whether our findings may be of any clinical relevance needs to be clarified in future studies, in vivo.
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Affiliation(s)
- Dimitra Zacharaki
- Laboratory of Experimental Neurology and Neuroimmunology, 2nd Department of Neurology, AHEPA University Hospital, Aristotle University of Thessaloniki, 1 Stilp Kyriakidi str, 54636, Thessaloniki, Macedonia, Greece
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9
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Grigoriadis N, Lourbopoulos A, Lagoudaki R, Frischer JM, Polyzoidou E, Touloumi O, Simeonidou C, Deretzi G, Kountouras J, Spandou E, Kotta K, Karkavelas G, Tascos N, Lassmann H. Variable behavior and complications of autologous bone marrow mesenchymal stem cells transplanted in experimental autoimmune encephalomyelitis. Exp Neurol 2011; 230:78-89. [PMID: 21440544 DOI: 10.1016/j.expneurol.2011.02.021] [Citation(s) in RCA: 65] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2010] [Revised: 12/17/2010] [Accepted: 02/15/2011] [Indexed: 12/13/2022]
Abstract
Autologous bone marrow stromal cells (BMSCs) offer significant practical advantages for potential clinical applications in multiple sclerosis (MS). Based on recent experimental data, a number of clinical trials have been designed for the intravenous (IV) and/or intrathecal (ITH) administration of BMSCs in MS patients. Delivery of BMSCs in the cerebrospinal fluid via intracerebroventricular (ICV) transplantation is a useful tool to identify mechanisms underlying the migration and function of these cells. In the current study, BMSCs were ICV administered in severe and mild EAE, as well as naive animals; neural precursor cells (NPCs) served as cellular controls. Our data indicated that ICV-transplanted BMSCs significantly ameliorated mild though not severe EAE. Moreover, BMSCs exerted significant anti-inflammatory effect on spinal cord with concomitant reduced axonopathy only in the mild EAE model. BMSCs migrated into the brain parenchyma and, depending on their cellular density, within brain parenchyma formed cellular masses characterized by focal inflammation, demyelination, axonal loss and increased collagen-fibronectin deposition. These masses were present in 64% of ICV BMASC-transplanted severe EAE animals whereas neither BMSCs transplanted in mild EAE cases nor the NPCs exhibited similar behavior. BMSCs possibly exerted their fibrogenic effect via both paracrine and autocrine manner, at least partly due to up-regulation of connective tissue growth factor (CTGF) under the trigger of TGFb1. Our findings are of substantial relevance for clinical trials in MS, particularly regarding the possibility that ICV transplanted BMSCs entering the inflamed central nervous system may exhibit - under conditions - a local pathology of yet unknown consequences.
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Affiliation(s)
- Nikolaos Grigoriadis
- Laboratory of Experimental Neurology and Neuroimmunology, 2nd Department of Neurology, AHEPA University Hospital, Aristotle University of Thessaloniki, Macedonia, Greece.
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Abstract
Prions are postulated to be the infectious agents of a family of transmissible, fatal, neurodegenerative disorders affecting both humans and animals. The possibility of prion transmission constitutes a public-health risk that confronts regulatory authorities everywhere. The main problem in handling prions is the fact that they are extremely resistant to standard decontamination methods. Thus, the use of harsh and expensive practices to destroy prions is inevitable. The development of applicable and efficient prion-inactivation practices is still highly important for the prevention of accidental transmission. In the search for effective and environmentally friendly methods to eliminate organic compounds and bacteria, much attention has been focused on the so-called advanced oxidation processes. These are based on the formation of hydroxyl radicals, which are known to possess a high reductive potential. This study tested the potential of titanium dioxide, an inexpensive and completely inert reagent, to inactivate prions in a heterogeneous photocatalytic process. Initial in vitro experiments were followed by a bioassay with the scrapie strain 263K in Syrian hamsters. The results obtained from this study indicate that titanium dioxide photocatalytic treatment of scrapie-infected brain homogenates reduces infectivity titres significantly.
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Affiliation(s)
- Ioannis Paspaltsis
- Prion Disease Research Group, Laboratory of Pharmacology, School of Pharmacy, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Konstantia Kotta
- Prion Disease Research Group, Laboratory of Pharmacology, School of Pharmacy, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Roza Lagoudaki
- B' Neurological Clinic, AHEPA University Hospital, 54124 Thessaloniki, Greece
| | | | - Ioannis Poulios
- Laboratory of Physical Chemistry, Department of Chemistry, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
| | - Theodoros Sklaviadis
- Centre for Research and Technology-Hellas, Institute of Agrobiotechnology, 57001 Thessaloniki, Greece
- Prion Disease Research Group, Laboratory of Pharmacology, School of Pharmacy, Aristotle University of Thessaloniki, 54124 Thessaloniki, Greece
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