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Puła B, Kępski J, Misiewicz-Krzemińska I, Szmit S. Left and right ventricular global longitudinal strain assessment together with biomarker evaluation may have a predictive and prognostic role in patients qualified for hematopoietic stem cell transplantation due to hematopoietic and lymphoid malignancies - a pilot study description. Cardiooncology 2024; 10:9. [PMID: 38368369 PMCID: PMC10873966 DOI: 10.1186/s40959-024-00210-8] [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] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Accepted: 02/12/2024] [Indexed: 02/19/2024]
Abstract
The hematopoietic stem cell transplantation (HSCT) procedure is considered a cardiovascular burden. This is due to the potentially cardiotoxic cytostatic agents used before and the risks associated with peri-transplant procedures. We designed a pilot study to determine the clinical utility of the new ST2 marker; furthermore, we routinely assessed cardiac parameters in HSCT recipients. Based on previous cardio-oncology experience in lung and prostate cancer, we can confirm the prognostic and predictive value of classic cardiac biomarkers and modern echocardiography parameters such as global longitudinal strain of the left and right ventricle. After conducting this pilot study we can create a predictive and prognostic model for patients undergoing HSCT. This will greatly enrich our clinical practice, especially in treating older people.
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Affiliation(s)
- Bartosz Puła
- Department of Hematology, Institute of Hematology and Transfusion Medicine, Warsaw, Poland
| | - Jarosław Kępski
- Department of Cardio-Oncology, Chair of Hematology and Transfusion Medicine, Centre of Postgraduate Medical Education, Warsaw, Poland
| | | | - Sebastian Szmit
- Department of Cardio-Oncology, Chair of Hematology and Transfusion Medicine, Centre of Postgraduate Medical Education, Warsaw, Poland.
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Krzemiński P, Misiewicz-Krzemińska I, Grodzik M, Padzińska-Pruszyńska I, Kucharzewska P, Ostrowska A, Sawosz E, Pomorski P. The protective effect of silver nanoparticles' on epithelial cornea cells against ultraviolet is accompanied by changes in calcium homeostasis and a decrease of the P2X7 and P2Y2 receptors. Biomed Pharmacother 2024; 170:116090. [PMID: 38169187 DOI: 10.1016/j.biopha.2023.116090] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Revised: 12/18/2023] [Accepted: 12/26/2023] [Indexed: 01/05/2024] Open
Abstract
PURPOSE The aim of the study was to evaluate the effect of silver nanoparticles hydrocolloids (AgNPs) on human corneal epithelial cells. Epithelial cells form the outermost and the most vulnerable to environmental stimuli layer of the cornea in the eye. Mechanical stress, UV radiation, and pathogens such as bacteria, viruses, and parasites challenge the fragile homeostasis of the eye. To help combat stress, infection, and inflammation wide portfolio of interventions is available. One of the oldest treatments is colloidal silver. Silver nanoparticle suspension in water is known for its anti-bacterial anti-viral and antiprotozoal action. However, AgNPs interact also with host cells, and the character of the interplay between corneal cells and silver seeks investigation. METHODS The human epithelial corneal cell line (HCE-2) was cultured in vitro, treated with AgNPs, and subjected to UV. The cell's viability, migration, calcium concentration, and expression/protein level of selected proteins were investigated by appropriate methods including cytotoxicity tests, "wound healing" assay, Fluo8/Fura2 AM staining, qRT-PCR, and western blot. RESULTS Incubation of human corneal cells (HCE-2) with AgNP did not affect cells viability but limited cells migration and resulted in altered calcium homeostasis, decreased the presence of ATP-activated P2X7, P2Y2 receptors, and enhanced the expression of PACAP. Furthermore, AgNPs pretreatment helped restrain some of the deleterious effects of UV irradiation. Interestingly, AgNPs had no impact on the protein level of ACE2, which is important in light of potential SARS-CoV-2 entrance through the cornea. CONCLUSIONS Silver nanoparticles are safe for corneal epithelial cells in vitro.
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Affiliation(s)
- Patryk Krzemiński
- Department of Nanobiotechnology, Insitute of Biology, Warsaw University of Life Sciences, Ciszewskiego 8, bldg. 23, 02-786 Warsaw, Poland.
| | - Irena Misiewicz-Krzemińska
- Plasma Cell Neoplasm Laboratory, Department of Experimental Haematology, Institute of Hematology and Blood Transfusion, Chocimska 5, 00-791 Warsaw, Poland
| | - Marta Grodzik
- Department of Nanobiotechnology, Insitute of Biology, Warsaw University of Life Sciences, Ciszewskiego 8, bldg. 23, 02-786 Warsaw, Poland
| | - Irena Padzińska-Pruszyńska
- Department of Cancer Biology, Institute of Biology, Warsaw University of Life Sciences, Ciszewskiego 8, bldg. 23, 02-786 Warsaw, Poland
| | - Paulina Kucharzewska
- Department of Cancer Biology, Institute of Biology, Warsaw University of Life Sciences, Ciszewskiego 8, bldg. 23, 02-786 Warsaw, Poland
| | - Agnieszka Ostrowska
- Department of Nanobiotechnology, Insitute of Biology, Warsaw University of Life Sciences, Ciszewskiego 8, bldg. 23, 02-786 Warsaw, Poland
| | - Ewa Sawosz
- Department of Nanobiotechnology, Insitute of Biology, Warsaw University of Life Sciences, Ciszewskiego 8, bldg. 23, 02-786 Warsaw, Poland
| | - Paweł Pomorski
- Laboratory of Molecular Basis of Cell Motility, Nencki Institute of Experimental Biology, Pasteura 3, 02-093 Warsaw, Poland
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Iskrzak J, Zygmunciak P, Misiewicz-Krzemińska I, Puła B. Extracellular Vesicles in Multiple Myeloma-Cracking the Code to a Better Understanding of the Disease. Cancers (Basel) 2022; 14:cancers14225575. [PMID: 36428668 PMCID: PMC9688731 DOI: 10.3390/cancers14225575] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Accepted: 11/09/2022] [Indexed: 11/16/2022] Open
Abstract
Multiple myeloma (MM) is a plasma cell-derived malignancy that stands for around 1.5% of newly discovered cancer cases. Despite constantly improving treatment methods, the disease is incurable with over 13,000 deaths in the US and over 30,000 in Europe. Recent studies suggest that extracellular vesicles (EVs) might play a significant role in the pathogenesis and evolution of MM. Further investigation of their role could prove to be beneficial in establishing new therapies and hence, improve the prognosis of MM patients. What is more, EVs might serve as novel markers in diagnosing and monitoring the disease. Great advancements concerning the position of EVs in the pathophysiology of MM have recently been shown in research and in this review, we would like to delve into the still expanding state of knowledge.
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Affiliation(s)
- Justyna Iskrzak
- Medical University of Warsaw, 02-091 Warsaw, Poland
- Institute of Hematology and Transfusion Medicine, Indira Gandhi Str. 14, 02-776 Warsaw, Poland
| | - Przemysław Zygmunciak
- Medical University of Warsaw, 02-091 Warsaw, Poland
- Institute of Hematology and Transfusion Medicine, Indira Gandhi Str. 14, 02-776 Warsaw, Poland
| | - Irena Misiewicz-Krzemińska
- Department of Experimental Hematology, Institute of Hematology and Transfusion Medicine, Chocimska Str. 5, 00-791 Warsaw, Poland
| | - Bartosz Puła
- Department of Hematology, Institute of Hematology and Transfusion Medicine, Indira Gandhi Str. 14, 02-776 Warsaw, Poland
- Correspondence: ; Tel.: +48-223-496-302; Fax: +48-223-496-335
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Salomon-Perzyński A, Barankiewicz J, Machnicki M, Misiewicz-Krzemińska I, Pawlak M, Radomska S, Krzywdzińska A, Bluszcz A, Stawiński P, Rydzanicz M, Jakacka N, Solarska I, Borg K, Spyra-Górny Z, Szpila T, Puła B, Grosicki S, Stokłosa T, Płoski R, Lech-Marańda E, Jakubikova J, Jamroziak K. Tracking Clonal Evolution of Multiple Myeloma Using Targeted Next-Generation DNA Sequencing. Biomedicines 2022; 10:biomedicines10071674. [PMID: 35884979 PMCID: PMC9313382 DOI: 10.3390/biomedicines10071674] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Revised: 07/06/2022] [Accepted: 07/09/2022] [Indexed: 12/19/2022] Open
Abstract
Clonal evolution drives treatment failure in multiple myeloma (MM). Here, we used a custom 372-gene panel to track genetic changes occurring during MM progression at different stages of the disease. A tumor-only targeted next-generation DNA sequencing was performed on 69 samples sequentially collected from 30 MM patients. The MAPK/ERK pathway was mostly affected with KRAS mutated in 47% of patients. Acquisition and loss of mutations were observed in 63% and 37% of patients, respectively. Four different patterns of mutation evolution were found: branching-, mutation acquisition-, mutation loss- and a stable mutational pathway. Better response to anti-myeloma therapy was more frequently observed in patients who followed the mutation loss-compared to the mutation acquisition pathway. More than two-thirds of patients had druggable genes mutated (including cases of heavily pre-treated disease). Only 7% of patients had a stable copy number variants profile. Consequently, a redistribution in stages according to R-ISS between the first and paired samples (R-ISS″) was seen. The higher the R-ISS″, the higher the risk of MM progression and death. We provided new insights into the genetics of MM evolution, especially in heavily pre-treated patients. Additionally, we confirmed that redefining R-ISS at MM relapse is of high clinical value.
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Affiliation(s)
- Aleksander Salomon-Perzyński
- Department of Hematology, Institute of Hematology and Transfusion Medicine, 02-776 Warsaw, Poland; (A.S.-P.); (J.B.); (N.J.); (T.S.); (B.P.); (E.L.-M.)
| | - Joanna Barankiewicz
- Department of Hematology, Institute of Hematology and Transfusion Medicine, 02-776 Warsaw, Poland; (A.S.-P.); (J.B.); (N.J.); (T.S.); (B.P.); (E.L.-M.)
| | - Marcin Machnicki
- Department of Tumor Biology and Genetics, Medical University of Warsaw, 02-106 Warsaw, Poland; (M.M.); (T.S.)
| | - Irena Misiewicz-Krzemińska
- Department of Experimental Hematology, Institute of Hematology and Transfusion Medicine, 02-776 Warsaw, Poland; (I.M.-K.); (M.P.)
| | - Michał Pawlak
- Department of Experimental Hematology, Institute of Hematology and Transfusion Medicine, 02-776 Warsaw, Poland; (I.M.-K.); (M.P.)
| | - Sylwia Radomska
- Molecular Biology Laboratory, Department of Diagnostic Hematology, Institute of Hematology and Transfusion Medicine, 02-776 Warsaw, Poland; (S.R.); (I.S.)
| | - Agnieszka Krzywdzińska
- Immunophenotyping Laboratory, Department of Diagnostic Hematology, Institute of Hematology and Transfusion Medicine, 02-776 Warsaw, Poland;
| | - Aleksandra Bluszcz
- Cytogenetic Laboratory, Department of Diagnostic Hematology, Institute of Hematology and Transfusion Medicine, 02-776 Warsaw, Poland; (A.B.); (K.B.)
| | - Piotr Stawiński
- Department of Medical Genetics, Medical University of Warsaw, 02-106 Warsaw, Poland; (P.S.); (M.R.); (R.P.)
| | - Małgorzata Rydzanicz
- Department of Medical Genetics, Medical University of Warsaw, 02-106 Warsaw, Poland; (P.S.); (M.R.); (R.P.)
| | - Natalia Jakacka
- Department of Hematology, Institute of Hematology and Transfusion Medicine, 02-776 Warsaw, Poland; (A.S.-P.); (J.B.); (N.J.); (T.S.); (B.P.); (E.L.-M.)
| | - Iwona Solarska
- Molecular Biology Laboratory, Department of Diagnostic Hematology, Institute of Hematology and Transfusion Medicine, 02-776 Warsaw, Poland; (S.R.); (I.S.)
| | - Katarzyna Borg
- Cytogenetic Laboratory, Department of Diagnostic Hematology, Institute of Hematology and Transfusion Medicine, 02-776 Warsaw, Poland; (A.B.); (K.B.)
| | - Zofia Spyra-Górny
- Department of Hematology and Cancer Prevention, Faculty od Health Sciences, Medical University of Silesia in Katowice, 40-055 Katowice, Poland; (Z.S.-G.); (S.G.)
| | - Tomasz Szpila
- Department of Hematology, Institute of Hematology and Transfusion Medicine, 02-776 Warsaw, Poland; (A.S.-P.); (J.B.); (N.J.); (T.S.); (B.P.); (E.L.-M.)
| | - Bartosz Puła
- Department of Hematology, Institute of Hematology and Transfusion Medicine, 02-776 Warsaw, Poland; (A.S.-P.); (J.B.); (N.J.); (T.S.); (B.P.); (E.L.-M.)
| | - Sebastian Grosicki
- Department of Hematology and Cancer Prevention, Faculty od Health Sciences, Medical University of Silesia in Katowice, 40-055 Katowice, Poland; (Z.S.-G.); (S.G.)
| | - Tomasz Stokłosa
- Department of Tumor Biology and Genetics, Medical University of Warsaw, 02-106 Warsaw, Poland; (M.M.); (T.S.)
| | - Rafał Płoski
- Department of Medical Genetics, Medical University of Warsaw, 02-106 Warsaw, Poland; (P.S.); (M.R.); (R.P.)
| | - Ewa Lech-Marańda
- Department of Hematology, Institute of Hematology and Transfusion Medicine, 02-776 Warsaw, Poland; (A.S.-P.); (J.B.); (N.J.); (T.S.); (B.P.); (E.L.-M.)
| | - Jana Jakubikova
- Department of Tumor Immunology, Biomedical Research Center, Cancer Research Institute, Slovak Academy of Sciences, Dubravska Cesta 9, 84505 Bratislava, Slovakia;
| | - Krzysztof Jamroziak
- Department of Hematology, Transplantation and Internal Medicine, Medical University of Warsaw, 02-106 Warsaw, Poland
- Correspondence:
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Strojny B, Jaworski S, Misiewicz-Krzemińska I, Isidro I, Rojas EA, Gutiérrez NC, Grodzik M, Koczoń P, Chwalibog A, Sawosz E. Effect of Graphene Family Materials on Multiple Myeloma and Non-Hodgkin's Lymphoma Cell Lines. Materials (Basel) 2020; 13:E3420. [PMID: 32756412 PMCID: PMC7436021 DOI: 10.3390/ma13153420] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 07/30/2020] [Accepted: 07/31/2020] [Indexed: 12/21/2022]
Abstract
The interest around the graphene family of materials is constantly growing due to their potential application in biomedical fields. The effect of graphene and its derivatives on cells varies amongst studies depending on the cell and tissue type. Since the toxicity against non-adherent cell lines has barely been studied, we investigated the effect of graphene and two different graphene oxides against four multiple myeloma cell lines, namely KMS-12-BM, H929, U226, and MM.1S, as well as two non-Hodgkin lymphoma cells lines, namely KARPAS299 and DOHH-2. We performed two types of viability assays, MTT (3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide conversion) and ATP (adenosine triphosphate detection), flow cytometry analysis of apoptosis induction and cell cycle, cell morphology, and direct interaction analysis using two approaches-visualization of living cells by two different systems, and visualization of fixed and dyed cells. Our results revealed that graphene and graphene oxides exhibit low to moderate cytotoxicity against cells, despite visible interaction between the cells and graphene oxide. This creates possibilities for the application of the selected graphene materials for drug delivery systems or theragnostics in hematological malignancies; however, further detailed studies are necessary to explain the nature of interactions between the cells and the materials.
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Affiliation(s)
- Barbara Strojny
- Department of Nanobiotechnology and Experimental Ecology, Institute of Biology, Warsaw University of Life Sciences, 02-786 Warsaw, Poland; (S.J.); (M.G.); (E.S.)
| | - Sławomir Jaworski
- Department of Nanobiotechnology and Experimental Ecology, Institute of Biology, Warsaw University of Life Sciences, 02-786 Warsaw, Poland; (S.J.); (M.G.); (E.S.)
| | - Irena Misiewicz-Krzemińska
- Hematology Department, Institute of Biomedical Research of Salamanca (IBSAL), University Hospital of Salamanca, 37007 Salamanca, Spain; (I.M.-K.); (I.I.); (E.A.R.); (N.C.G.)
- Cancer Research Center-IBMCC (USAL-CSIC), 37007 Salamanca, Spain
| | - Isabel Isidro
- Hematology Department, Institute of Biomedical Research of Salamanca (IBSAL), University Hospital of Salamanca, 37007 Salamanca, Spain; (I.M.-K.); (I.I.); (E.A.R.); (N.C.G.)
- Cancer Research Center-IBMCC (USAL-CSIC), 37007 Salamanca, Spain
| | - Elizabeta A. Rojas
- Hematology Department, Institute of Biomedical Research of Salamanca (IBSAL), University Hospital of Salamanca, 37007 Salamanca, Spain; (I.M.-K.); (I.I.); (E.A.R.); (N.C.G.)
- Cancer Research Center-IBMCC (USAL-CSIC), 37007 Salamanca, Spain
| | - Norma C. Gutiérrez
- Hematology Department, Institute of Biomedical Research of Salamanca (IBSAL), University Hospital of Salamanca, 37007 Salamanca, Spain; (I.M.-K.); (I.I.); (E.A.R.); (N.C.G.)
- Cancer Research Center-IBMCC (USAL-CSIC), 37007 Salamanca, Spain
| | - Marta Grodzik
- Department of Nanobiotechnology and Experimental Ecology, Institute of Biology, Warsaw University of Life Sciences, 02-786 Warsaw, Poland; (S.J.); (M.G.); (E.S.)
| | - Piotr Koczoń
- Department of Chemistry, Institute of Food Science, Warsaw University of Life Sciences, 02-776 Warsaw, Poland;
| | - André Chwalibog
- Department of Veterinary and Animal Sciences, University of Copenhagen, Groennegaardsvej 3, 1870 Frederiksberg, Denmark;
| | - Ewa Sawosz
- Department of Nanobiotechnology and Experimental Ecology, Institute of Biology, Warsaw University of Life Sciences, 02-786 Warsaw, Poland; (S.J.); (M.G.); (E.S.)
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Milczarek M, Misiewicz-Krzemińska I, Lubelska K, Wiktorska K. Combination treatment with 5-fluorouracil and isothiocyanates shows an antagonistic effect in Chinese hamster fibroblast cells line-V79. Acta Pol Pharm 2011; 68:331-342. [PMID: 21648187] [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: 05/30/2023]
Abstract
The isothiocyanates present in the cruciferous plants were proved to have the antiproliferative and cytotoxic effect on cancer cell lines. Natural compounds in combination with chemotherapy agents enhance anticancer activities of drugs and reduce their toxicity. The aim of the presented study was to determine an effect of isothiocyanates and 5-fluorouracil used alone or in combination (in sequential or co-administrative treatments) on normal cell lines-V79. There were compared abilities of three isothiocyanates to interact with 5-fluorouracil. There was also investigated the mechanism of interaction and influence of isothiocyanates on 5-fluorouracil. The cell survival was evaluated with MTT assay. Combination effects between isothiocyanates and 5-fluorouracil were estimated in the way described by Chou and Talalay. The cycle progression and the living cells number were determined with flow cytometry. The type of cell death was detected with a confocal microscope. There was observed an antagonistic effect which was mainly dependent on the cell cycle distribution e.g., sulforaphane increased the cell number in the G2/M phase, whereas 5-fluorouracil and combination of these two compounds increased the cell number in the S phase. If each compound blocked the S phase of the cell cycle, their combination increased the cell number in the S phase, but the increase was not statistically significant when compared with single substance treatments. The highest antagonistic effect in normal cells was obtained for co-administrated 5-fluorouracil and 2-oxoheptyl isothiocyanate at the fraction affected at 0.5 and 0.75. Isothiocyanates did not affect 5-fluorouracil cytotoxicity in normal cell lines-V79.
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Affiliation(s)
- Małgorzata Milczarek
- Confocal Microscopy Laboratory, Department of Cell Biology, National Medicines Institute, Chełmska 30/35, 02-725 Warszawa, Poland
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Suchocki P, Misiewicz-Krzemińska I, Skupińska K, Niedźwiecka K, Lubelska K, Fijałek Z, Kasprzycka-Guttman T. Selenitetriglicerydes affect CYP1A1 and QR activity by involvement of reactive oxygen species and Nrf2 transcription factor. Pharmacol Rep 2010; 62:352-61. [PMID: 20508291 DOI: 10.1016/s1734-1140(10)70275-9] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2009] [Revised: 10/20/2009] [Indexed: 01/17/2023]
Abstract
Selenitetriglycerides are a group of compounds that contain selenium (Se) (IV). In this paper, we present the results of examinations of three structurally-related selenitetriglicerydes that contain various Se concentrations: 2%, 5% and 7% Selol. The present study concentrates on the effect of Selol on phase 1 and 2 enzyme activity and the implications of free radicals and the nuclear erythroid 2-related factor 2 (Nrf2)-antioxidant response element (ARE) pathway in the activity of this compound. The cytotoxic and cytostatic activities of the three kinds of Selol were evaluated; however, the cytotoxic effect was observed only for 7% Selol. Our results show that 2% Selol acts as a monofunctional inducer of phase 2 enzyme activity, and the induction is mediated by the Nrf2 transcription factor. Selol 7% acts in an opposite manner and induces phase 1 with simultaneous inhibition of phase 2 enzyme activity. The differential effect can be associated with the increase in Se content, leading to a change in the structure of the compound.
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Affiliation(s)
- Piotr Suchocki
- National Medicines Institute, Chełmska 30/34, PL 00-725 Warszawa, Poland.
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Mazur P, Magdziarz T, Bak A, Chilmonczyk Z, Kasprzycka-Guttman T, Misiewicz-Krzemińska I, Skupińska K, Polanski J. Does molecular docking reveal alternative chemopreventive mechanism of activation of oxidoreductase by sulforaphane isothiocyanates? J Mol Model 2009; 16:1205-12. [PMID: 20024690 DOI: 10.1007/s00894-009-0628-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2009] [Accepted: 11/14/2009] [Indexed: 11/28/2022]
Abstract
Isothiocyanates (ITC) are well-known chemopreventive agents extracted from vegetables. This activity results from the activation of human oxidoreductase. In this letter, the uncompetitive activatory mechanism of ITC was investigated using docking and molecular dynamics simulations. This indicates that NAD(P)H:quinone oxidoreductase can efficiently improve enzyme-substrate recognition within the catalytic site if the ITC activator supports the interaction in the uncompetitive binding site.
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Affiliation(s)
- Pawel Mazur
- Department of Organic Chemistry, Institute of Chemistry, University of Silesia, 40006, Katowice, Poland
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Misiewicz-Krzemińska I, Skupińska K, Graczyk A, Kasprzycka-Guttman T. Influence of protoporphyrin IX amino acid substituents on affinity to human breast adenocarcinoma MCF-7 cells. Biotech Histochem 2009; 84:17-23. [DOI: 10.1080/10520290802673381] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Flis S, Gnyszka A, Misiewicz-Krzemińska I, Spławiński J. Decytabine enhances cytotoxicity induced by oxaliplatin and 5-fluorouracil in the colorectal cancer cell line Colo-205. Cancer Cell Int 2009; 9:10. [PMID: 19397792 PMCID: PMC2683807 DOI: 10.1186/1475-2867-9-10] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.0] [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: 02/19/2009] [Accepted: 04/27/2009] [Indexed: 01/11/2023] Open
Abstract
Background DNA methylation is an epigenetic phenomenon known to play an important role in the development of cancers, including colorectal cancer (CRC). Aberrant methylation of promoter regions of genes is potentially reversible, and if methylation is important for cancer survival, demethylation should do the opposite. To test this we have addressed the hypothesis that DNA methyltransferase inhibitors (DNMTi), decytabine and zebularine, potentiate inhibitory effects of classical anti-CRC cytostatics, oxaliplatin and 5-fluorouracil (5-FU), on survival of CRC cells in vitro. Results Isobole and median effect analysis revealed that decytabine shows potent synergistic interaction with oxaliplatin and 5-FU and that this is probably not the class effect of DNMTi as zebularine shows strong antagonistic interaction with oxaliplatin. The synergistic combination treatment was also applied to the cultures to investigate their mechanisms of action. We have shown that combinations of decytabine with cytostatics produced dose-dependent growth inhibition and treatment-induced apoptosis. Conclusion The observed synergism between decytabine and cytostatics is most probably related to the augmented apoptotic signal and allowed for significant (both biologically and statistically) reduction of the cytotoxic doses of cytostatics used.
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Affiliation(s)
- Sylwia Flis
- Department of Pharmacology, National Medicines Institute, Warsaw, Poland
| | - Agnieszka Gnyszka
- Department of Pharmacology, National Medicines Institute, Warsaw, Poland
| | - Irena Misiewicz-Krzemińska
- Confocal Microscopy Laboratory, Department of Cell Biology, National Medicines Institute, Warsaw, Poland
| | - Jacek Spławiński
- Department of Pharmacology, National Medicines Institute, Warsaw, Poland
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