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Montecillo-Aguado M, Tirado-Rodriguez B, Huerta-Yepez S. The Involvement of Polyunsaturated Fatty Acids in Apoptosis Mechanisms and Their Implications in Cancer. Int J Mol Sci 2023; 24:11691. [PMID: 37511450 PMCID: PMC10380946 DOI: 10.3390/ijms241411691] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 07/12/2023] [Accepted: 07/17/2023] [Indexed: 07/30/2023] Open
Abstract
Cancer is a significant global public health issue and, despite advancements in detection and treatment, the prognosis remains poor. Cancer is a complex disease characterized by various hallmarks, including dysregulation in apoptotic cell death pathways. Apoptosis is a programmed cell death process that efficiently eliminates damaged cells. Several studies have indicated the involvement of polyunsaturated fatty acids (PUFAs) in apoptosis, including omega-3 PUFAs such as alpha-linolenic acid, docosahexaenoic acid, and eicosapentaenoic acid. However, the role of omega-6 PUFAs, such as linoleic acid, gamma-linolenic acid, and arachidonic acid, in apoptosis is controversial, with some studies supporting their activation of apoptosis and others suggesting inhibition. These PUFAs are essential fatty acids, and Western populations today have a high consumption rate of omega-6 to omega-3 PUFAs. This review focuses on presenting the diverse molecular mechanisms evidence in both in vitro and in vivo models, to help clarify the controversial involvement of omega-3 and omega-6 PUFAs in apoptosis mechanisms in cancer.
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Affiliation(s)
- Mayra Montecillo-Aguado
- Unidad de Investigacion en Enfermedades Oncologicas, Hospital Infantil de Mexico, Federico Gomez, Mexico City 06720, Mexico
- Programa de Doctorado en Ciencias Biomédicas, Facultad de Medicina, Universidad Nacional Autónoma de Mexico (UNAM), Mexico City 04510, Mexico
| | - Belen Tirado-Rodriguez
- Unidad de Investigacion en Enfermedades Oncologicas, Hospital Infantil de Mexico, Federico Gomez, Mexico City 06720, Mexico
| | - Sara Huerta-Yepez
- Unidad de Investigacion en Enfermedades Oncologicas, Hospital Infantil de Mexico, Federico Gomez, Mexico City 06720, Mexico
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Romina O, Federico B, Leonardo S, Jennifer M, Carla R, Marina P, Alejandra D, Guillermo J, Lisa T. 6 Iodo-delta lactone inhibits angiogenesis in human HT29 colon adenocarcinoma xenograft. Prostaglandins Leukot Essent Fatty Acids 2022; 186:102507. [PMID: 36244213 DOI: 10.1016/j.plefa.2022.102507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 08/24/2022] [Accepted: 10/06/2022] [Indexed: 12/29/2022]
Abstract
INTRODUCTION Several studies have shown the antiproliferative effect of iodine and 5‑hydroxy-6 iodo-eicosatrienoic delta lactone (IL-δ) on diverse tissues. It was demonstrated that molecular iodine (I2) and IL-δ, but not iodide (I-), exerts anti-neoplastic actions in different cancers. The underlying mechanism through which IL-δ inhibits tumor growth remains unclear. The aim of this study was to analyze the effect of IL-δ on tumor growth and angiogenesis in human HT29 colorectal cancer xenografts. METHODOLOGY AND RESULTS HT29 cells were injected subcutaneously into the flanks of nude mice and IL-δ was i.p. injected at a dose of 15 μg three days a week. IL-δ treatment in HT29 xenografts showed time-dependent inhibition of tumor growth, decrease of mitosis and PCNA expression (p < 0.05), increase of P27 expression and Caspase 3 activity after 18 days of treatment (p < 0.05). To assess tumor Microvessel Densities (MVD), CD31 staining by immunohistochemistry was analyzed. IL-δ treatment decreased MVD by 17% and 30% after 18 and 30 days respectively (p < 0.05), as well as it decreased VEGF and VEGF-R2 expression (p < 0.05). Additionally, our findings demonstrated that IL-δ increased VEGF-R1 and Ang-1 mRNA levels (p < 0.01). CONCLUSION The antitumor efficacy of IL-δ in vivo involves inhibition of cell proliferation as well as induction of apoptosis. IL-δ has also anti-angiogenic effect associated with VEGF and VEGF-R2 downregulation followed by Ang-1 and VEGF-R1 increased expression. High levels of Ang-1 would contribute to mature vessel stabilization and maintenance while VEGF-R1 increase would produce anti-proliferative effect on endothelial cells.
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Affiliation(s)
- Oglio Romina
- Department of Radiobiology (CAC), National Comission of Atomic Energy (CNEA), Argentine
| | - Buschittari Federico
- Department of Radiobiology (CAC), National Comission of Atomic Energy (CNEA), Argentine
| | - Salvarredi Leonardo
- Department of Radiobiology (CAC), National Comission of Atomic Energy (CNEA), Argentine
| | | | - Rodriguez Carla
- Department of Radiobiology (CAC), National Comission of Atomic Energy (CNEA), Argentine
| | - Perona Marina
- Department of Radiobiology (CAC), National Comission of Atomic Energy (CNEA), Argentine; National Council of Scientific and Technical Research (CONICET), Argentine
| | - Dagrosa Alejandra
- Department of Radiobiology (CAC), National Comission of Atomic Energy (CNEA), Argentine; National Council of Scientific and Technical Research (CONICET), Argentine
| | - Juvenal Guillermo
- Department of Radiobiology (CAC), National Comission of Atomic Energy (CNEA), Argentine; National Council of Scientific and Technical Research (CONICET), Argentine
| | - Thomasz Lisa
- Department of Radiobiology (CAC), National Comission of Atomic Energy (CNEA), Argentine; National Council of Scientific and Technical Research (CONICET), Argentine.
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Włoch A, Stygar D, Bahri F, Bażanów B, Kuropka P, Chełmecka E, Pruchnik H, Gładkowski W. Antiproliferative, Antimicrobial and Antiviral Activity of β-Aryl-δ-iodo-γ-lactones, Their Effect on Cellular Oxidative Stress Markers and Biological Membranes. Biomolecules 2020; 10:biom10121594. [PMID: 33255306 PMCID: PMC7760079 DOI: 10.3390/biom10121594] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 11/18/2020] [Accepted: 11/22/2020] [Indexed: 02/08/2023] Open
Abstract
The aim of this work was the examination of biological activity of three selected racemic cis-β-aryl-δ-iodo-γ-lactones. Tested iodolactones differed in the structure of the aromatic fragment of molecule, bearing isopropyl (1), methyl (2), or no substituent (3) on the para position of the benzene ring. A broad spectrum of biological activity as antimicrobial, antiviral, antitumor, cytotoxic, antioxidant, and hemolytic activity was examined. All iodolactones showed bactericidal activity against Proteus mirabilis, and lactones 1,2 were active against Bacillus cereus. The highest cytotoxic activity towards HeLa and MCF7 cancer cell lines and NHDF normal cell line was found for lactone 1. All assessed lactones significantly disrupted antioxidative/oxidative balance of the NHDF, and the most harmful effect was determined by lactone 1. Contrary to lactone 1, lactones 2 and 3 did not induce the hemolysis of erythrocytes after 48 h of incubation. The differences in activity of iodolactones 1–3 in biological tests may be explained by their different impact on physicochemical properties of membrane as the packing order in the hydrophilic area and fluidity of hydrocarbon chains. This was dependent on the presence and type of alkyl substituent. The highest effect on the membrane organization was observed for lactone 1 due to the presence of bulky isopropyl group on the benzene ring.
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Affiliation(s)
- Aleksandra Włoch
- Department of Physics and Biophysics, Wrocław University of Environmental and Life Sciences, C.K. Norwida 25, 50-375 Wrocław, Poland;
- Correspondence: (A.W.); (W.G.); Tel.: +48-713205461 (W.G.)
| | - Dominika Stygar
- Department of Physiology in Zabrze, Medical University of Silesia, Poniatowskiego 15, 40-751 Katowice, Poland;
| | - Fouad Bahri
- Laboratory of Microbiology and Plant Biology, University of Mostaganem, Mostaganem 27000, Algeria;
| | - Barbara Bażanów
- Department of Veterinary Microbiology, Wroclaw University of Environmental and Life Sciences, Norwida 31, 50-375 Wrocław, Poland;
| | - Piotr Kuropka
- Department of Biostructure and Animal Physiology, Wrocław University of Environmental and Life Sciences, C.K. Norwida 31, 50-375 Wrocław, Poland;
| | - Elżbieta Chełmecka
- Department of Statistics, Department of Instrumental Analysis, Medical University of Silesia, Ostrogórska 30, 41-200 Sosnowiec, Poland;
| | - Hanna Pruchnik
- Department of Physics and Biophysics, Wrocław University of Environmental and Life Sciences, C.K. Norwida 25, 50-375 Wrocław, Poland;
| | - Witold Gładkowski
- Department of Chemistry, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland
- Correspondence: (A.W.); (W.G.); Tel.: +48-713205461 (W.G.)
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Thomasz L, Oglio R, Salvarredi L, Perona M, Rossich L, Copelli S, Pisarev M, Juvenal G. Regulation of NADPH oxidase NOX4 by delta iodolactone (IL-δ) in thyroid cancer cells. Mol Cell Endocrinol 2018; 470:115-126. [PMID: 28993239 DOI: 10.1016/j.mce.2017.10.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Revised: 10/04/2017] [Accepted: 10/04/2017] [Indexed: 11/18/2022]
Abstract
INTRODUCTION Iodine is not used only by the thyroid to synthesize thyroid hormones but also directly influences a number of thyroid parameters such as thyroid proliferation and function. Several iodinated lipids, biosynthesized by the thyroid, were postulated as intermediaries in the action of iodide. Among these, iodolactone (IL-δ) and 2-iodohexadecanal (2-IHDA) have shown to inhibit several thyroid parameters. The antiproliferative effect of IL-δ is not restricted to the thyroid gland. IL-δ exhibits anti-tumor properties in breast cancer, neuroblastoma, glioblastoma, melanoma and lung carcinoma cells suggesting that IL-δ could be used as a chemotherapeutic agent. Moreover in a colon cancer cell line (HT-29), IL-δ induced cell death, and this effect was mediated by reactive oxygen species (ROS) generation. The aim of the present study was to analyze the sources of reactive oxygen species induced by IL-δ and to explore the contribution of ROS induced by IL-δ on cell proliferation and apoptosis. METHODOLOGY AND RESULTS Cancer thyroid follicular (WRO) and papilar (TPC-1) cells lines were treated with IL-δ. Proliferation and apoptosis was analyzed. IL-δ caused a significant loss of cell viability on WRO and TPC-1 cells in a concentration dependent manner and induced apoptosis after 3 h of treatment. Furthermore, IL-δ (10 μM) increased ROS production (39% WRO and 20% TPC-1). The concomitant treatment of WRO and TPC-1 cells with Trolox or NAC plus IL-δ abrogated the augment of ROS induced by IL-δ exposure. Additionally Trolox and NAC reversed the effect of IL-δ on cell proliferation and apoptosis. Only in WRO cells IL-δ upregulates NADPH oxidase NOX4 expression, and siRNA targeted knock-down of NOX4 attenuates ROS production, apoptosis (p < 0.05) and the inhibitory effect of IL-δ on cell proliferation and PCNA expression (p < 0.05). CONCLUSIONS The antiproliferative and pro-apoptotic effect of IL-δ is mediated by different mechanisms and pathway involving different sources of ROS generation depending on the cellular context.
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Affiliation(s)
- Lisa Thomasz
- Nuclear Biochemistry Division, Argentine National Atomic Energy Commission, Buenos Aires 1429, Argentina; CONICET, Argentina.
| | - Romina Oglio
- Nuclear Biochemistry Division, Argentine National Atomic Energy Commission, Buenos Aires 1429, Argentina
| | - Leonardo Salvarredi
- Nuclear Biochemistry Division, Argentine National Atomic Energy Commission, Buenos Aires 1429, Argentina
| | - Marina Perona
- Nuclear Biochemistry Division, Argentine National Atomic Energy Commission, Buenos Aires 1429, Argentina; CONICET, Argentina
| | - Luciano Rossich
- Nuclear Biochemistry Division, Argentine National Atomic Energy Commission, Buenos Aires 1429, Argentina
| | | | - Mario Pisarev
- Nuclear Biochemistry Division, Argentine National Atomic Energy Commission, Buenos Aires 1429, Argentina; CONICET, Argentina
| | - Guillermo Juvenal
- Nuclear Biochemistry Division, Argentine National Atomic Energy Commission, Buenos Aires 1429, Argentina; CONICET, Argentina.
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Pawlak A, Gładkowski W, Kutkowska J, Mazur M, Obmińska-Mrukowicz B, Rapak A. Enantiomeric trans β-aryl-δ-iodo-γ-lactones derived from 2,5-dimethylbenzaldehyde induce apoptosis in canine lymphoma cell lines by downregulation of anti-apoptotic Bcl-2 family members Bcl-xL and Bcl-2. Bioorg Med Chem Lett 2018. [PMID: 29534928 DOI: 10.1016/j.bmcl.2018.03.006] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
For many years, studies focused on developing new natural or synthetic compounds with antineoplastic activity have attracted the attention of researchers. An interesting group of such compounds seem to be those with both lactone moiety and an aromatic ring which, in addition to antimicrobial or antiviral activity, also exhibit antitumor properties. The study shows antitumor activity of two enantiomeric trans isomers of 5-(1-iodoethyl)-4-(2',5'-dimethylphenyl)dihydrofuran-2-one. Our aim was to determine their antitumor activity manifested as an ability to induce apoptosis in selected canine cancer cell lines as well as to evaluate differences in their strength depending on the configuration of their stereogenic centers. The enantiomers (+)-(4R,5S,6R)-1 and (-)-(4S,5R,6S)-2 were found to induce classical caspase-dependent apoptosis through downregulation of the expression of anti-apoptotic proteins Bcl-xL and Bcl-2. Although the mechanism of apoptosis induction was the same for both enantiomers, they differed in their strength, as stronger antineoplastic activity in vitro was exhibited by isomer (+)-(4R,5S,6R)-1.
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Affiliation(s)
- Aleksandra Pawlak
- Department of Pharmacology, Faculty of Veterinary Medicine, Wrocław University of Environmental and Life Sciences, Norwida 31, 50-375 Wrocław, Poland.
| | - Witold Gładkowski
- Department of Chemistry, Faculty of Biotechnology and Food Science, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland.
| | - Justyna Kutkowska
- Laboratory of Tumor Molecular Immunobiology, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Wroclaw, Weigla 12, 53-114 Wroclaw, Poland.
| | - Marcelina Mazur
- Department of Chemistry, Faculty of Biotechnology and Food Science, Wrocław University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland
| | - Bożena Obmińska-Mrukowicz
- Department of Pharmacology, Faculty of Veterinary Medicine, Wrocław University of Environmental and Life Sciences, Norwida 31, 50-375 Wrocław, Poland
| | - Andrzej Rapak
- Laboratory of Tumor Molecular Immunobiology, Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Wroclaw, Weigla 12, 53-114 Wroclaw, Poland.
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Liu J, Xu M, Zhao Y, Ao C, Wu Y, Chen Z, Wang B, Bai X, Li M, Hu W. n-3 polyunsaturated fatty acids abrogate mTORC1/2 signaling and inhibit adrenocortical carcinoma growth in vitro and in vivo. Oncol Rep 2016; 35:3514-22. [PMID: 27035283 DOI: 10.3892/or.2016.4720] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 01/06/2016] [Indexed: 11/06/2022] Open
Abstract
n-3 polyunsaturated fatty acids (PUFAs) are essential for human health and have been reported to reduce the risk of cancer, inhibit the growth of various types of tumors both in vitro and in vivo, and affect adrenal function. However, their effects on adrenocortical carcinoma (ACC) are not known. In the present study, we demonstrated that docosahexenoic acid (DHA) inhibited ACC cell proliferation, colony formation and cell cycle progression, and promoted apoptosis. In addition, ectopic expression of fat-1, a desaturase that converts n-6 to n-3 PUFAs endogenously, also inhibited ACC cell proliferation. Moreover, supplementing n-3 PUFAs in the diet efficiently prevented ACC cell growth in xenograft models. Notably, implanted ACC cells were unable to grow in fat-1 transgenic severe combined immune deficiency mice. Further study revealed that exogenous and endogenous n-3 PUFAs efficiently suppressed both mTOR complex 1 (mTORC1) and mTORC2 signaling in ACC in vitro and in vivo. Taken together, our findings provide comprehensive preclinical evidence that n-3 PUFAs efficiently prevent ACC growth by inhibiting mTORC1/2, which may have important implications in the treatment of ACC.
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Affiliation(s)
- Jun Liu
- Department of Urology, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou 510010, P.R. China
| | - Meinian Xu
- Department of Cell Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, P.R. China
| | - Yongbin Zhao
- Department of Urology, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou 510010, P.R. China
| | - Chunping Ao
- Department of Cell Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, P.R. China
| | - Yukun Wu
- Department of Cell Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, P.R. China
| | - Zhenguo Chen
- Department of Cell Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, P.R. China
| | - Bangqi Wang
- Department of Urology, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou 510010, P.R. China
| | - Xiaochun Bai
- Department of Cell Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, P.R. China
| | - Ming Li
- Department of Cell Biology, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, P.R. China
| | - Weilie Hu
- Department of Urology, Guangzhou General Hospital of Guangzhou Military Command, Guangzhou 510010, P.R. China
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Koronowicz AA, Kopeć A, Master A, Smoleń S, Piątkowska E, Bieżanowska-Kopeć R, Ledwożyw-Smoleń I, Skoczylas Ł, Rakoczy R, Leszczyńska T, Kapusta-Duch J, Pysz M. Transcriptome Profiling of Caco-2 Cancer Cell Line following Treatment with Extracts from Iodine-Biofortified Lettuce (Lactuca sativa L.). PLoS One 2016; 11:e0147336. [PMID: 26799209 PMCID: PMC4723252 DOI: 10.1371/journal.pone.0147336] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Accepted: 12/31/2015] [Indexed: 12/29/2022] Open
Abstract
Although iodization of salt is the most common method used to obtain iodine-enriched food, iodine deficiency disorders are still a global health problem and profoundly affect the quality of human life. Iodine is required for the synthesis of thyroid hormones, which are crucial regulators of human metabolism, cell growth, proliferation, apoptosis and have been reported to be involved in carcinogenesis. In this study, for the first time, we evaluated the effect of iodine-biofortified lettuce on transcriptomic profile of Caco-2 cancer cell line by applying the Whole Human Genome Microarray assay. We showed 1326 differentially expressed Caco-2 transcripts after treatment with iodine-biofortified (BFL) and non-fortified (NFL) lettuce extracts. We analysed pathways, molecular functions, biological processes and protein classes based on comparison between BFL and NFL specific genes. Iodine, which was expected to act as a free ion (KI-NFL) or at least in part to be incorporated into lettuce macromolecules (BFL), differently regulated pathways of numerous transcription factors leading to different cellular effects. In this study we showed the inhibition of Caco-2 cells proliferation after treatment with BFL, but not potassium iodide (KI), and BFL-mediated induction of mitochondrial apoptosis and/or cell differentiation. Our results showed that iodine-biofortified plants can be effectively used by cells as an alternative source of this trace element. Moreover, the observed differences in action of both iodine sources may suggest a potential of BFL in cancer treatment.
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Affiliation(s)
- Aneta A. Koronowicz
- Department of Human Nutrition, Faculty of Food Technology, University of Agriculture, Krakow, Poland
| | - Aneta Kopeć
- Department of Human Nutrition, Faculty of Food Technology, University of Agriculture, Krakow, Poland
| | - Adam Master
- Department of Biochemistry and Molecular Biology, Medical Centre for Postgraduate Education, Warszawa, Poland
| | - Sylwester Smoleń
- Unit of Plant Nutrition, Institute of Plant Biology and Biotechnology, Faculty of Horticulture, University of Agriculture, Krakow, Poland
| | - Ewa Piątkowska
- Department of Human Nutrition, Faculty of Food Technology, University of Agriculture, Krakow, Poland
| | - Renata Bieżanowska-Kopeć
- Department of Human Nutrition, Faculty of Food Technology, University of Agriculture, Krakow, Poland
| | - Iwona Ledwożyw-Smoleń
- Unit of Biochemistry, Institute of Plant Biology and Biotechnology, Faculty of Biotechnology and Horticulture, University of Agriculture, Krakow, Poland
| | - Łukasz Skoczylas
- Department of Fruit, Vegetable and Mushroom Processing, Faculty of Food Technology, University of Agriculture, Krakow, Poland
| | - Roksana Rakoczy
- Unit of Plant Nutrition, Institute of Plant Biology and Biotechnology, Faculty of Horticulture, University of Agriculture, Krakow, Poland
| | - Teresa Leszczyńska
- Department of Human Nutrition, Faculty of Food Technology, University of Agriculture, Krakow, Poland
| | - Joanna Kapusta-Duch
- Department of Human Nutrition, Faculty of Food Technology, University of Agriculture, Krakow, Poland
| | - Mirosław Pysz
- Department of Human Nutrition, Faculty of Food Technology, University of Agriculture, Krakow, Poland
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Thomasz L, Coulonval K, Salvarredi L, Oglio R, Fusco A, Rossich L, Pisarev MA, Roger PP, Juvenal GJ. Inhibitory effects of 2-iodohexadecanal on FRTL-5 thyroid cells proliferation. Mol Cell Endocrinol 2015; 404:123-31. [PMID: 25657048 DOI: 10.1016/j.mce.2015.01.038] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2014] [Revised: 01/14/2015] [Accepted: 01/26/2015] [Indexed: 10/24/2022]
Abstract
UNLABELLED Although thyroid gland function is mainly under the control of pituitary TSH, other factors, such as iodine, play a role in this process. The thyroid is capable of producing different iodolipids such as 6-iodo-deltalactone and 2-iodohexadecanal (2-IHDA). It was shown that these iodolipids mimic some of the inhibitory effects of excess iodide on several thyroid parameters. OBJECTIVES To study the effect of 2-IHDA on cell proliferation and apoptosis in FRTL-5 cells. RESULTS FRTL-5 cells were grown in the presence of TSH and treated with increasing concentrations of KI and 2-IHDA (0.5, 5, 10 and 33 µM) for 24, 48 and 72 h. Whereas KI inhibited cell proliferation only at 33 µM after 72 h of treatment, 2-IHDA inhibited in a time and concentration dependent manner. Analysis of cell cycle by flow cytometric DNA analysis revealed an accumulation of cells in G1 phase induced by 2-IHDA. The expression of cyclin A, cyclin D1 and cyclin D3 were reduced after treatment with 2-IHDA whereas CDK4 and CDK6 proteins were not modified. 2-IHDA induced a dynamic change in cytoplasmic to nuclear accumulation of p21 and p27 causing these proteins to be accumulated mostly in the nucleus. We also observed evidence of a pro-apoptotic effect of 2-IHDA at highest concentrations. No significant effect of KI was observed. CONCLUSION These results suggest that the inhibitory effects of 2-IHDA on FRTL-5 thyroid cell proliferation are mediated by cell cycle arrest in G1/S phase and cell death by apoptosis.
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Affiliation(s)
- Lisa Thomasz
- Nuclear Biochemistry Division, National Atomic Energy Commission, Buenos Aires, Argentina
| | - Katia Coulonval
- I.R.I.B.H.M., Université Libre de Bruxelles, Bruxelles, Belgium
| | - Leonardo Salvarredi
- Nuclear Biochemistry Division, National Atomic Energy Commission, Buenos Aires, Argentina
| | - Romina Oglio
- Nuclear Biochemistry Division, National Atomic Energy Commission, Buenos Aires, Argentina
| | - Alfredo Fusco
- IEOS, Università degli Studi di Napoli "Federico II", Naples, Italy
| | - Luciano Rossich
- Nuclear Biochemistry Division, National Atomic Energy Commission, Buenos Aires, Argentina
| | - Mario A Pisarev
- Nuclear Biochemistry Division, National Atomic Energy Commission, Buenos Aires, Argentina; Human Biochemistry, School of Medicine, University of Buenos Aires, Buenos Aires, Argentina
| | - Pierre P Roger
- I.R.I.B.H.M., Université Libre de Bruxelles, Bruxelles, Belgium
| | - Guillermo J Juvenal
- Nuclear Biochemistry Division, National Atomic Energy Commission, Buenos Aires, Argentina.
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9
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Wang X, Breeze A, Kulka M. N-3 polyunsaturated fatty acids inhibit IFN-γ-induced IL-18 binding protein production by prostate cancer cells. Cancer Immunol Immunother 2015; 64:249-58. [PMID: 25351720 PMCID: PMC11028839 DOI: 10.1007/s00262-014-1630-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2013] [Accepted: 10/16/2014] [Indexed: 10/24/2022]
Abstract
Prostate cancer cells can produce IL-18 binding protein (IL-18BP) in response to interferon-γ (IFN-γ), which may function to neutralize IL-18, an anti-tumor factor formerly known as IFN-γ inducing factor. The consumption of n-3 polyunsaturated fatty acids (PUFAs) has been associated with a lower risk of certain types of cancer including prostate cancer, although the precise mechanisms of this effect are poorly understood. We hypothesized that n-3 PUFAs could modify IL-18BP production by prostate cancer cells by altering IFN-γ receptor-mediated signal transduction. Here, we demonstrate that n-3 PUFA treatment significantly reduced IFN-γ-induced IL-18BP production by DU-145 and PC-3 prostate cancer cells by inhibiting IL-18BP mRNA expression and was associated with a reduction in IFN-γ receptor expression. Furthermore, IFN-γ-induced phosphorylation of Janus kinase 1 (JAK1), signal transducers and activators of transcription 1 (STAT1), extracellular signal-regulated kinases 1/2 (ERK1/2), and P38 were suppressed by n-3 PUFA treatment. By contrast, n-6 PUFA had no effect on IFN-γ receptor expression, but decreased IFN-γ-induced IL-18BP production and IFN-γ stimulation of JAK1, STAT1, ERK1/2, and JNK phosphorylation. These data indicate that both n-3 and n-6 PUFAs may be beneficial in prostate cancer by altering IFN-γ signaling, thus inhibiting IL-18BP production and thereby rendering prostate cancer cells more sensitive to IL-18-mediated immune responses.
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Affiliation(s)
- Xiaofeng Wang
- Department of Agricultural, Food and Nutritional Science, University of Alberta, 116 Street and 85 Avenue, Edmonton, AB, T6G 2R3, Canada,
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10
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Nava-Villalba M, Aceves C. 6-iodolactone, key mediator of antitumoral properties of iodine. Prostaglandins Other Lipid Mediat 2014; 112:27-33. [PMID: 25018052 DOI: 10.1016/j.prostaglandins.2014.07.001] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2014] [Revised: 06/20/2014] [Accepted: 07/01/2014] [Indexed: 12/12/2022]
Abstract
An iodinated derivative of arachidonic acid, 5-hydroxy-6-iodo-8,11,14-eicosatrienoic acid, δ-lactone (6-IL) has been implicated as a possible intermediate in the autoregulation of the thyroid gland by iodine. In addition to antiproliferative and apoptotic effects observed in thyrocytes, this iodolipid could also exert similar actions in cells derived from extrathyroidal tissues like mammary gland, prostate, colon, or the nervous system. In mammary cancer (solid tumors or tumor cell lines), 6-IL has been detected after molecular iodine (I2) supplement, and is a potent activator of peroxisome proliferator-activated receptor type gamma (PPARγ). These observations led us to propose I2 supplement as a novel coadjutant therapy which, by inducing differentiation mechanisms, decreases tumor progression and prevents chemoresistance. Some kinds of tumoral cells, in contrast to normal cells, contain high concentrations of arachidonic acid, making the I2 supplement a potential "magic bullet" that enables local, specific production of 6-IL, which then exerts antineoplastic actions with minimal deleterious effects on normal tissues.
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Affiliation(s)
- Mario Nava-Villalba
- Instituto de Neurobiología, Universidad Nacional Autónoma de México, Campus Juriquilla, Querétaro, Mexico.
| | - Carmen Aceves
- Instituto de Neurobiología, Universidad Nacional Autónoma de México, Campus Juriquilla, Querétaro, Mexico.
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Abstract
Several agents used for treatment of colon and other cancers induce reactive oxygen species (ROS) and this plays an important role in their anticancer activities. In addition to the well-known proapoptotic effects of ROS inducers, these compounds also decrease expression of specificity protein (Sp) transcription factors Sp1, Sp3 and Sp4 and several pro-oncogenic Spregulated genes important for cancer cell proliferation, survival and metastasis. The mechanism of these responses involve ROS-dependent downregulation of microRNA-27a (miR-27a) or miR-20a (and paralogs) and induction of two Sp-repressors, ZBTB10 and ZBTB4 respectively. This pathway significantly contributes to the anticancer activity of ROS inducers and should be considered in development of drug combinations for cancer chemotherapy.
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Affiliation(s)
- Sandeep Sreevalsan
- VMR 1197, Room 413, Texas A&M University, College Station, TX, 77843 979-845-9182
| | - Stephen Safe
- VMR 1197, Room 410, Texas A&M University, College Station, TX, 77843 979-845-5988
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