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Lasota M, Rybarska J, Konieczny L, Zemanek G, Zagajewski J, Chlopas K, Jankowski D, Koscik I, Skulska-Birgiel A, Wisniewska A, Iciek M, Jasek-Gajda E, Jasinska M, Jagusiak A. Property of a new Prussian blue-bounded iron complex able to peroxidate non-saturated fatty acids with a tendency to create conditions that may encourage ferroptosis. J Physiol Pharmacol 2022; 73. [PMID: 36942813 DOI: 10.26402/jpp.2022.5.10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Accepted: 10/30/2022] [Indexed: 03/23/2023]
Abstract
Ferroptosis is a cell death process caused by redox imbalance in the cell environment. However, the cell death pathway proves beneficial in anticancer therapy, so compounds inducing ferroptosis are sought. The paper presents a newly synthesized iron complex named FeT, composed of ferricyanide and tartrate, which seems to meet these expectations. It is relatively stable, easily soluble in water and capable of peroxidating unsaturated fatty acids. T24 bladder cells were used as model cells. Preliminary studies demonstrated a strong inhibitory effect of this compound on cell proliferation. The cytotoxicity of FeT was assessed. Independently, it initiates caspase activity, indicating the complex cellular impact of this compound. This effect is compellingly the result of FeT penetration into the cell's interior with possible direct damage to mitochondria, thus explaining the involvement of apoptosis in cell death. At the same time, after penetrating into the cell, it causes an increase in reactive oxygen species (ROS), lipid peroxidation and a decrease in reduced glutathione, which is interpreted as to cause ferroptosis. In turn, reducing mitochondrial potential may indicate both ferroptosis and an internal pathway to apoptosis.
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Affiliation(s)
- M Lasota
- Jagiellonian University Medical College, Faculty of Medicine, Chair of Medical Biochemistry, Cracow, Poland.
| | - J Rybarska
- Jagiellonian University Medical College, Faculty of Medicine, Chair of Medical Biochemistry, Cracow, Poland
| | - L Konieczny
- Jagiellonian University Medical College, Faculty of Medicine, Chair of Medical Biochemistry, Cracow, Poland
| | - G Zemanek
- Jagiellonian University Medical College, Faculty of Medicine, Chair of Medical Biochemistry, Cracow, Poland
| | - J Zagajewski
- Jagiellonian University Medical College, Faculty of Medicine, Chair of Medical Biochemistry, Cracow, Poland
| | - K Chlopas
- Pulmonology and Allergology Clinical Department, University Hospital in Cracow, Cracow, Poland
| | - D Jankowski
- Jagiellonian University; Faculty of Biochemistry, Biophysics, and Biotechnology, Cracow, Poland
| | - I Koscik
- Jagiellonian University Medical College, Faculty of Medicine, Chair of Medical Biochemistry, Cracow, Poland
| | | | - A Wisniewska
- Jagiellonian University Medical College, Faculty of Medicine, Chair of Pharmacology, Cracow, Poland
| | - M Iciek
- Jagiellonian University Medical College, Faculty of Medicine, Chair of Medical Biochemistry, Cracow, Poland
| | - E Jasek-Gajda
- Jagiellonian University Medical College, Faculty of Medicine, Department of Histology, Cracow, Poland
| | - M Jasinska
- Jagiellonian University Medical College, Faculty of Medicine, Department of Histology, Cracow, Poland
| | - A Jagusiak
- Jagiellonian University Medical College, Faculty of Medicine, Chair of Medical Biochemistry, Cracow, Poland.
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Lasota M, Bentke-Imiolek A, Skrzypek K, Bobrowska J, Jagusiak A, Bryniarska-Kubiak N, Zagajewski J, Kot M, Szydlak R, Lekka M, Laidler P, Majka M. Small-molecule inhibitor - tyrphostin AG1296 regulates proliferation, survival and migration of rhabdomyosarcoma cells. J Physiol Pharmacol 2021; 72. [PMID: 35377340 DOI: 10.26402/jpp.2021.6.06] [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] [Received: 11/17/2021] [Accepted: 12/31/2021] [Indexed: 06/14/2023]
Abstract
Rhabdomyosarcoma (RMS) is the most commonly occurring malignant soft tissue tumor in children. Despite improving its treatment methods, the current outcome in the advanced stages of this tumor is not satisfactory. RMS cells are characterized by abnormal cellular signaling due to the changes in the activity of the tyrosine kinases. Thus, substances blocking the mitogenic signal transmitted by receptors with tyrosine kinase activity raise hopes for inhibition of the uncontrolled cell growth. In this study, we examined the anticancer activity of tyrphostin AG1296, a tyrosine kinase inhibitor that binds to the intracellular domain of the PDGF (platelet-derived growth factor) receptor in human RMS alveolar and embryonal cell lines. We have discovered that tyrphostin AG1296 completely inhibited cell proliferation and effectively inhibited cell viability. Tyrphostin AG1296 induced apoptosis of the RMS cells and significantly inhibited their migration. Additionally, investigated inhibitor slightly inhibited expression of AKT and phosphorylation of ERK in alveolar RMS cells. Importantly, the inhibitor exerted also potent effects on the nanomechanical properties and cytoskeleton organization of RMS cells. To conclude, tyrphostin AG1296 is a promising compound in the treatment of alveolar RMS. Undoubtedly, a better knowledge of receptor pathomechanism of tyrosine kinases may contribute to developing new, more effective ways of RMS treatment.
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Affiliation(s)
- M Lasota
- Jagiellonian University Medical College, Faculty of Medicine, Institute of Pediatrics, Department of Transplantation, Cracow, Poland
- Jagiellonian University Medical College, Faculty of Medicine, Chair of Medical Biochemistry, Cracow, Poland.
| | - A Bentke-Imiolek
- Jagiellonian University Medical College, Faculty of Medicine, Chair of Medical Biochemistry, Cracow, Poland
| | - K Skrzypek
- Jagiellonian University Medical College, Faculty of Medicine, Institute of Pediatrics, Department of Transplantation, Cracow, Poland
| | - J Bobrowska
- Polish Academy of Sciences, Institute of Nuclear Physics, Department of Research of Biophysical Microstructure, Cracow, Poland
| | - A Jagusiak
- Jagiellonian University Medical College, Faculty of Medicine, Chair of Medical Biochemistry, Cracow, Poland
| | - N Bryniarska-Kubiak
- Polish Academy of Sciences, Maj Institute of Pharmacology, Department of Experimental Neuroendocrinology, Laboratory of Immunoendocrinology, Cracow, Poland
| | - J Zagajewski
- Jagiellonian University Medical College, Faculty of Medicine, Chair of Medical Biochemistry, Cracow, Poland
| | - M Kot
- Jagiellonian University Medical College, Faculty of Medicine, Institute of Pediatrics, Department of Transplantation, Cracow, Poland
| | - R Szydlak
- Jagiellonian University Medical College, Faculty of Medicine, Chair of Medical Biochemistry, Cracow, Poland
| | - M Lekka
- Polish Academy of Sciences, Institute of Nuclear Physics, Department of Research of Biophysical Microstructure, Cracow, Poland
| | - P Laidler
- Jagiellonian University Medical College, Faculty of Medicine, Chair of Medical Biochemistry, Cracow, Poland
| | - M Majka
- Jagiellonian University Medical College, Faculty of Medicine, Institute of Pediatrics, Department of Transplantation, Cracow, Poland
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Jagusiak A, Konieczny L, Krol M, Marszalek P, Piekarska B, Piwowar P, Roterman I, Rybarska J, Stopa B, Zemanek G. Intramolecular immunological signal hypothesis revived--structural background of signalling revealed by using Congo Red as a specific tool. Mini Rev Med Chem 2015; 14:1104-13. [PMID: 25429660 PMCID: PMC4440395 DOI: 10.2174/1389557514666141127150803] [Citation(s) in RCA: 9] [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: 04/30/2014] [Revised: 10/11/2014] [Accepted: 11/11/2014] [Indexed: 11/22/2022]
Abstract
Micellar structures formed by self-assembling Congo red molecules bind to proteins penetrating into functionrelated
unstable packing areas. Here, we have used Congo red - a supramolecular protein ligand to investigate how the
intramolecular structural changes that take place in antibodies following antigen binding lead to complement activation.
According to our findings, Congo red binding significantly enhances the formation of antigen-antibody complexes. As a
result, even low-affinity transiently binding antibodies can participate in immune complexes in the presence of Congo
red, although immune complexes formed by these antibodies fail to trigger the complement cascade. This indicates that
binding of antibodies to the antigen may not, by itself, fulfill the necessary conditions to generate the signal which
triggers effector activity. These findings, together with the results of molecular dynamics simulation studies, enable us to
conclude that, apart from the necessary assembling of antibodies, intramolecular structural changes generated by
strains which associate high- affinity bivalent antibody fitting to antigen determinants are also required to cross the
complement activation threshold.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - G Zemanek
- Department of Bioinformatics and Telemedicine, Jagiellonian University, Medical College, Lazarza 16, 31- 530 Krakow, Poland..
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