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Borjihan Q, Liang X, Chen T, Xiao D, Zhang Y, Wu H, Zhang Q, Dong A. Biological regulation on iodine using nano-starch for preventing thyroid dysfunction. JOURNAL OF HAZARDOUS MATERIALS 2023; 460:132200. [PMID: 37651936 DOI: 10.1016/j.jhazmat.2023.132200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Revised: 07/29/2023] [Accepted: 07/30/2023] [Indexed: 09/02/2023]
Abstract
The growing incidence of thyroid disease triggered by excess iodine uptake poses a severe health threat throughout the world. Extracellular interference therapies impede iodine transport across the sodium-iodide symporter (NIS) membrane protein and thus prevent excessive iodine uptake by thyroid cells, which may lessen the occurrence of disease. Herein, we for the first time utilized nano-starch particles (St NPs) to regulate iodine transport across the NIS protein of thyroid cells by using extracellular interference therapy. By precisely encapsulating iodine within the cavity of a glucan α-helix via hydrogen bonding, extracellular St NPs prevented excess iodine uptake by thyroid cells in vitro and in vivo; this down-regulated the expression of NIS protein (0.06-fold) and autophagy protein LC3B-II (0.35-fold). We also found that St NPs regulated the metabolic pathway of iodine in zebrafish. We believe this proposed strategy offers a novel insight into controlling iodine uptake by the thyroid and indicates a new direction for preventing iodine-induced thyroid disease.
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Affiliation(s)
- Qinggele Borjihan
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, PR China; Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education, Inner Mongolia University, Hohhot 010021, PR China
| | - Xuefang Liang
- College of Ecology and Environment, Inner Mongolia University, Hohhot 010021, PR China
| | - Ting Chen
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, PR China; Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education, Inner Mongolia University, Hohhot 010021, PR China
| | - Douxin Xiao
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, PR China; Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education, Inner Mongolia University, Hohhot 010021, PR China
| | - Yanling Zhang
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, PR China; Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education, Inner Mongolia University, Hohhot 010021, PR China
| | - Haixia Wu
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, PR China; Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education, Inner Mongolia University, Hohhot 010021, PR China.
| | - Qing Zhang
- College of Chemistry, Tangshan Normal University, Tangshan 063000, PR China.
| | - Alideertu Dong
- College of Chemistry and Chemical Engineering, Inner Mongolia University, Hohhot 010021, PR China; Engineering Research Center of Dairy Quality and Safety Control Technology, Ministry of Education, Inner Mongolia University, Hohhot 010021, PR China.
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Yu J, Shen S, Yan Y, Liu L, Luo R, Liu S, Wu Y, Li Y, Jiang J, Ying H. Iodide Excess Inhibits Thyroid Hormone Synthesis Pathway Involving XBP1-Mediated Regulation. Nutrients 2023; 15:nu15040887. [PMID: 36839245 PMCID: PMC9967305 DOI: 10.3390/nu15040887] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2022] [Revised: 02/03/2023] [Accepted: 02/07/2023] [Indexed: 02/12/2023] Open
Abstract
Iodine is an essential micronutrient for producing thyroid hormone (TH); however, iodide excess can lead to adverse thyroidal effects. Unfortunately, the lack of a proper in vitro model system hampered the studies of the effect of iodide excess on thyroid physiology and pathology. Here, we demonstrated that excessive iodide intake downregulated the genes related to TH synthesis in the thyroids of mice. Since sodium iodide has no effect on these genes in cultured cell lines, we developed a three-dimensional (3D) culture system to enable the murine thyrocytes to form organoids in vitro with thyroid follicle-like structures and function and found that the in vivo effect of iodide excess could be mimicked in these thyroid organoids. Our data indicate that iodide excess mainly activated the XBP1-mediated unfolded protein response in both murine thyroid and thyroid organoids, while activation of XBP1 was able to mimic the sodium iodide effect on genes for the synthesis of TH in murine thyroid organoids. Lastly, our results suggest that XBP1 might transcriptionally repress the genes involved in the synthesis of TH. Based on these findings, we propose that iodide excess inhibits the transcription of genes related to TH synthesis through a mechanism involving XBP1-mediated action.
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Affiliation(s)
- Jing Yu
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, and Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai 200233, China
- Innovation Center for Intervention of Chronic Disease and Promotion of Health, Shanghai 200025, China
| | - Siyi Shen
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, and Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai 200233, China
- Innovation Center for Intervention of Chronic Disease and Promotion of Health, Shanghai 200025, China
| | - Ying Yan
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, and Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai 200233, China
| | - Lingxiao Liu
- Department of Interventional Radiology, National Clinical Research Center for Interventional Medicine, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Rongkui Luo
- Department of Pathology, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Shengnan Liu
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, and Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai 200233, China
| | - Yuting Wu
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, and Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai 200233, China
| | - Yuying Li
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, and Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai 200233, China
- Innovation Center for Intervention of Chronic Disease and Promotion of Health, Shanghai 200025, China
- Correspondence: (Y.L.); (J.J.); (H.Y.)
| | - Jingjing Jiang
- Department of Endocrinology and Metabolism, Zhongshan Hospital, Fudan University, Shanghai 200032, China
- Correspondence: (Y.L.); (J.J.); (H.Y.)
| | - Hao Ying
- CAS Key Laboratory of Nutrition, Metabolism and Food Safety, Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, and Shanghai Jiao Tong University Affiliated Sixth People’s Hospital, Shanghai 200233, China
- Innovation Center for Intervention of Chronic Disease and Promotion of Health, Shanghai 200025, China
- Key Laboratory of Food Safety Risk Assessment, Ministry of Health, Beijing 100021, China
- Correspondence: (Y.L.); (J.J.); (H.Y.)
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Boretti A, Banik BK. Potential Effects of Iodine Supplementation on Inflammatory Processes and Toxin Removal Following COVID-19 Vaccination. Biol Trace Elem Res 2022; 200:3941-3944. [PMID: 34709555 PMCID: PMC8552616 DOI: 10.1007/s12011-021-02996-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Accepted: 10/24/2021] [Indexed: 11/28/2022]
Affiliation(s)
- Alberto Boretti
- Deanship of Research, Prince Mohammad Bin Fahd University, Al-Khobar, 31952, Saudi Arabia.
| | - Bimal K Banik
- Deanship of Research, Prince Mohammad Bin Fahd University, Al-Khobar, 31952, Saudi Arabia
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Albano F, Tucci V, Blackshear PJ, Reale C, Roberto L, Russo F, Marotta P, Porreca I, Colella M, Mallardo M, de Felice M, Ambrosino C. ZFP36L2 Role in Thyroid Functionality. Int J Mol Sci 2021; 22:9379. [PMID: 34502288 PMCID: PMC8431063 DOI: 10.3390/ijms22179379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2021] [Revised: 07/30/2021] [Accepted: 08/25/2021] [Indexed: 11/17/2022] Open
Abstract
Thyroid hormone levels are usually genetically determined. Thyrocytes produce a unique set of enzymes that are dedicated to thyroid hormone synthesis. While thyroid transcriptional regulation is well-characterized, post-transcriptional mechanisms have been less investigated. Here, we describe the involvement of ZFP36L2, a protein that stimulates degradation of target mRNAs, in thyroid development and function, by in vivo and in vitro gene targeting in thyrocytes. Thyroid-specific Zfp36l2-/- females were hypothyroid, with reduced levels of circulating free Thyroxine (cfT4) and Triiodothyronine (cfT3). Their hypothyroidism was due to dyshormonogenesis, already evident one week after weaning, while thyroid development appeared normal. We observed decreases in several thyroid-specific transcripts and proteins, such as Nis and its transcriptional regulators (Pax8 and Nkx2.1), and increased apoptosis in Zfp36l2-/- thyroids. Nis, Pax8, and Nkx2.1 mRNAs were also reduced in Zfp36l2 knock-out thyrocytes in vitro (L2KO), in which we confirmed the increased apoptosis. Finally, in L2KO cells, we showed an altered response to TSH stimulation regarding both thyroid-specific gene expression and cell proliferation and survival. This result was supported by increases in P21/WAF1 and p-P38MAPK levels. Mechanistically, we confirmed Notch1 as a target of ZFP36L2 in the thyroid since its levels were increased in both in vitro and in vivo models. In both models, the levels of Id4 mRNA, a potential inhibitor of Pax8 activity, were increased. Overall, the data indicate that the regulation of mRNA stability by ZFP36L2 is a mechanism that controls the function and survival of thyrocytes.
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Affiliation(s)
- Francesco Albano
- IEOS-CNR, 80131 Naples, Italy;
- Biogem, Istituto di Biologia e Genetica Molecolare, 83031 Ariano Irpino, Italy; (V.T.); (C.R.); (L.R.); (F.R.); (I.P.); (M.C.)
| | - Valeria Tucci
- Biogem, Istituto di Biologia e Genetica Molecolare, 83031 Ariano Irpino, Italy; (V.T.); (C.R.); (L.R.); (F.R.); (I.P.); (M.C.)
- Department of Precision Medicine, University of Campania “Luigi Vanvitelli”, 80138 Naples, Italy
| | - Perry J. Blackshear
- Signal Transduction Laboratory, National Institute of Environmental Health Sciences, Research Triangle Park, Durham, NC 27709, USA;
- Departments of Medicine and Biochemistry, Duke University Medical Center, Durham, NC 27710, USA
| | - Carla Reale
- Biogem, Istituto di Biologia e Genetica Molecolare, 83031 Ariano Irpino, Italy; (V.T.); (C.R.); (L.R.); (F.R.); (I.P.); (M.C.)
| | - Luca Roberto
- Biogem, Istituto di Biologia e Genetica Molecolare, 83031 Ariano Irpino, Italy; (V.T.); (C.R.); (L.R.); (F.R.); (I.P.); (M.C.)
| | - Filomena Russo
- Biogem, Istituto di Biologia e Genetica Molecolare, 83031 Ariano Irpino, Italy; (V.T.); (C.R.); (L.R.); (F.R.); (I.P.); (M.C.)
| | - Pina Marotta
- Stazione Zoologica Anton Dohrn, 80121 Napoli, Italy;
| | - Immacolata Porreca
- Biogem, Istituto di Biologia e Genetica Molecolare, 83031 Ariano Irpino, Italy; (V.T.); (C.R.); (L.R.); (F.R.); (I.P.); (M.C.)
| | - Marco Colella
- Biogem, Istituto di Biologia e Genetica Molecolare, 83031 Ariano Irpino, Italy; (V.T.); (C.R.); (L.R.); (F.R.); (I.P.); (M.C.)
- Department of Science and Technology, University of Sannio, 82100 Benevento, Italy
| | - Massimo Mallardo
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples “Federico II”, 80131 Naples, Italy;
| | - Mario de Felice
- IEOS-CNR, 80131 Naples, Italy;
- Department of Molecular Medicine and Medical Biotechnologies, University of Naples “Federico II”, 80131 Naples, Italy;
| | - Concetta Ambrosino
- Biogem, Istituto di Biologia e Genetica Molecolare, 83031 Ariano Irpino, Italy; (V.T.); (C.R.); (L.R.); (F.R.); (I.P.); (M.C.)
- Department of Science and Technology, University of Sannio, 82100 Benevento, Italy
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Sarkar D, Chandra AK, Chakraborty A, Ghosh S, Chattopadhyay S, Singh LH, Ray I. Effects of bamboo shoots (Bambusa balcooa) on thyroid hormone synthesizing regulatory elements at cellular and molecular levels in thyrocytes. JOURNAL OF ETHNOPHARMACOLOGY 2020; 250:112463. [PMID: 31838178 DOI: 10.1016/j.jep.2019.112463] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 10/21/2019] [Accepted: 12/05/2019] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Bamboo shoots (BS) are consumed in various forms and used largely in naturopathy for curing ailments since ancient times to present days. It is eaten in South East Asian countries in several indigenous preparations. In north east India, it is consumed predominantly and used as natural cure to treat various diseases. Although known for its beneficial effects, adverse effects including goitrogenic/antithyroidal potential are emerging. AIM OF THE STUDY Endemic goiter exists in Manipur, India even after adequate iodine intake for consumption of BS. It is thus important to study the impact of this goitrogenic food on certain thyroid hormone synthesizing regulatory factors at cellular and molecular level in thyrocytes. MATERIALS AND METHODS Phytochemical analysis of BS - Bambusa balcooa Roxb (BSBR) extract conducted. IC50 of the extract on thyrocytes in culture was determined. To study the antithyroid effects of this goitrogenic food, activity status of Na+-K+-ATPase, TPO and Deiodinase, mRNA and protein expressions of NIS, TPO and PAX8 were investigated with and without extra iodine in culture media. Simultaneously ROS generation in terms of H2O2 and antioxidant status, NO, LPO were assayed. RESULTS Activities of the studied enzymes decreased depending on dose and time with increased H2O2, decreased antioxidants followed by increased NO with LPO. DNA damage and LDH also increased while mRNA and protein expression of NIS, TPO and PAX8 were downregulated. Extra iodine ameliorated all such effects partially. CONCLUSIONS Bioactive constituents of the extract imbalances oxidative status of thyrocytes impairing action of hormone synthesizing elements at cellular and molecular level.
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Affiliation(s)
- Deotima Sarkar
- Endocrinology and Reproductive Physiology Laboratory, Department of Physiology, University of Calcutta, 92, APC Road, Kolkata, 700 009, India
| | - Amar K Chandra
- Endocrinology and Reproductive Physiology Laboratory, Department of Physiology, University of Calcutta, 92, APC Road, Kolkata, 700 009, India.
| | - Arijit Chakraborty
- Endocrinology and Reproductive Physiology Laboratory, Department of Physiology, University of Calcutta, 92, APC Road, Kolkata, 700 009, India
| | - Sayan Ghosh
- Endocrinology and Reproductive Physiology Laboratory, Department of Physiology, University of Calcutta, 92, APC Road, Kolkata, 700 009, India
| | - Sreya Chattopadhyay
- Endocrinology and Reproductive Physiology Laboratory, Department of Physiology, University of Calcutta, 92, APC Road, Kolkata, 700 009, India
| | - Laishram Hemchandra Singh
- Department of Zoology, DM College of Science (Govt. of Manipur), Imphal West, Manipur, 795 001, India
| | - Indrajit Ray
- Department of Human Physiology, Ramkrishna Mahavidyalaya (Govt. of Tripura), Kailashahar, Unakoti District, Tripura, 799 277, India
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Nagayama Y. Commentary: Excessive Iodine Promotes Pyroptosis of Thyroid Follicular Epithelial Cells in Hashimoto's Thyroiditis Through the ROS-NF-κB-NLRP3 Pathway. Front Endocrinol (Lausanne) 2020; 11:581. [PMID: 32982973 PMCID: PMC7484478 DOI: 10.3389/fendo.2020.00581] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Accepted: 07/16/2020] [Indexed: 12/27/2022] Open
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Rossich LE, Thomasz L, Nicola JP, Nazar M, Salvarredi LA, Pisarev M, Masini-Repiso AM, Christophe-Hobertus C, Christophe D, Juvenal GJ. Effects of 2-iodohexadecanal in the physiology of thyroid cells. Mol Cell Endocrinol 2016; 437:292-301. [PMID: 27568464 DOI: 10.1016/j.mce.2016.08.036] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Revised: 08/22/2016] [Accepted: 08/22/2016] [Indexed: 10/21/2022]
Abstract
Iodide has direct effects on thyroid function. Several iodinated lipids are biosynthesized by the thyroid and they were postulated as intermediaries in the action of iodide. Among them, 2-iodohexadecanal (2-IHDA) has been identified and proposed to play a role in thyroid autoregulation. The aim of this study was to compare the effect of iodide and 2-IHDA on thyroid cell physiology. For this purpose, FRTL-5 thyroid cells were incubated with the two compounds during 24 or 48 h and several thyroid parameters were evaluated such as: iodide uptake, intracellular calcium and H2O2 levels. To further explore the molecular mechanism involved in 2-IHDA action, transcript and protein levels of genes involved in thyroid hormone biosynthesis, as well as the transcriptional expression of these genes were evaluated in the presence of iodide and 2-IHDA. The results obtained indicate that 2-IHDA reproduces the action of excess iodide on the "Wolff-Chaikoff" effect as well as on thyroid specific genes transcription supporting its role in thyroid autoregulation.
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Affiliation(s)
- Luciano E Rossich
- Nuclear Biochemistry Division, Argentine National Atomic Energy Commission, CONICET, Buenos Aires, Argentina
| | - Lisa Thomasz
- Nuclear Biochemistry Division, Argentine National Atomic Energy Commission, CONICET, Buenos Aires, Argentina
| | - Juan P Nicola
- Department of Clinical Biochemistry, School of Chemical Sciences, National University of Cordoba, CONICET, Buenos Aires, Argentina
| | - Magali Nazar
- Department of Clinical Biochemistry, School of Chemical Sciences, National University of Cordoba, CONICET, Buenos Aires, Argentina
| | - Leonardo A Salvarredi
- Nuclear Biochemistry Division, Argentine National Atomic Energy Commission, CONICET, Buenos Aires, Argentina
| | - Mario Pisarev
- Nuclear Biochemistry Division, Argentine National Atomic Energy Commission, CONICET, Buenos Aires, Argentina; Department of Human Biochemistry, University of Buenos Aires School of Medicine, CONICET, Buenos Aires, Argentina
| | - Ana M Masini-Repiso
- Department of Clinical Biochemistry, School of Chemical Sciences, National University of Cordoba, CONICET, Buenos Aires, Argentina
| | | | | | - Guillermo J Juvenal
- Nuclear Biochemistry Division, Argentine National Atomic Energy Commission, CONICET, Buenos Aires, Argentina.
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Serrano-Nascimento C, Nicola JP, Teixeira SDS, Poyares LL, Lellis-Santos C, Bordin S, Masini-Repiso AM, Nunes MT. Excess iodide downregulates Na(+)/I(-) symporter gene transcription through activation of PI3K/Akt pathway. Mol Cell Endocrinol 2016; 426:73-90. [PMID: 26872612 DOI: 10.1016/j.mce.2016.02.006] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2015] [Revised: 02/08/2016] [Accepted: 02/08/2016] [Indexed: 12/19/2022]
Abstract
Transcriptional mechanisms associated with iodide-induced downregulation of NIS expression remain uncertain. Here, we further analyzed the transcriptional regulation of NIS gene expression by excess iodide using PCCl3 cells. NIS promoter activity was reduced in cells treated for 12-24 h with 10(-5) to 10(-3) M NaI. Site-directed mutagenesis of Pax8 and NF-κB cis-acting elements abrogated the iodide-induced NIS transcription repression. Indeed, excess iodide (10(-3) M) excluded Pax8 from the nucleus, decreased p65 total expression and reduced their transcriptional activity. Importantly, p65-Pax8 physical interaction and binding to NIS upstream enhancer were reduced upon iodide treatment. PI3K/Akt pathway activation by iodide-induced ROS production is involved in the transcriptional repression of NIS expression. In conclusion, the results indicated that excess iodide transcriptionally represses NIS gene expression through the impairment of Pax8 and p65 transcriptional activity. Furthermore, the data presented herein described novel roles for PI3K/Akt signaling pathway and oxidative status in the thyroid autoregulatory phenomenon.
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Affiliation(s)
- Caroline Serrano-Nascimento
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.
| | - Juan Pablo Nicola
- Centro de Investigaciones en Bioquímica Clínica e Inmunología, Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina.
| | - Silvania da Silva Teixeira
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.
| | - Leonice Lourenço Poyares
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.
| | - Camilo Lellis-Santos
- Department of Biological Sciences, Institute of Environmental, Chemical and Pharmaceutical Sciences, Federal University of São Paulo, Brazil.
| | - Silvana Bordin
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.
| | - Ana Maria Masini-Repiso
- Centro de Investigaciones en Bioquímica Clínica e Inmunología, Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Córdoba, Argentina.
| | - Maria Tereza Nunes
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.
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Calil-Silveira J, Serrano-Nascimento C, Kopp PA, Nunes MT. Iodide excess regulates its own efflux: a possible involvement of pendrin. Am J Physiol Cell Physiol 2016; 310:C576-82. [PMID: 26791486 DOI: 10.1152/ajpcell.00210.2015] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Accepted: 01/13/2016] [Indexed: 02/08/2023]
Abstract
Adequate iodide supply and metabolism are essential for thyroid hormones synthesis. In thyrocytes, iodide uptake is mediated by the sodium-iodide symporter, but several proteins appear to be involved in iodide efflux. Previous studies demonstrated that pendrin is able to mediate apical efflux of iodide in thyrocytes. Acute iodide excess transiently impairs thyroid hormone synthesis, a phenomenon known as the Wolff-Chaikoff effect. Although the escape from this inhibitory effect is not completely understood, it has been related to the inhibition of sodium-iodide symporter-mediated iodide uptake. However, the effects of iodide excess on iodide efflux have not been characterized. Herein, we investigated the consequences of iodide excess on pendrin abundance, subcellular localization, and iodide efflux in rat thyroid PCCl3 cells. Our results indicate that iodide excess increases pendrin abundance and plasma membrane insertion after 24 h of treatment. Moreover, iodide excess increases pendrin half-life. Finally, iodide exposure also increases iodide efflux from PCCl3 cells. In conclusion, these data suggest that pendrin may have an important role in mediating iodide efflux in thyrocytes, especially under conditions of iodide excess.
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Affiliation(s)
- Jamile Calil-Silveira
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil; and
| | - Caroline Serrano-Nascimento
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil; and
| | - Peter Andreas Kopp
- Division of Endocrinology Metabolism and Molecular Medicine, Feinberg School of Medicine, Northwestern University, Chicago, Illinois
| | - Maria Tereza Nunes
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil; and
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10
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Serrano-Nascimento C, da Silva Teixeira S, Nicola JP, Nachbar RT, Masini-Repiso AM, Nunes MT. The acute inhibitory effect of iodide excess on sodium/iodide symporter expression and activity involves the PI3K/Akt signaling pathway. Endocrinology 2014; 155:1145-56. [PMID: 24424051 DOI: 10.1210/en.2013-1665] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Iodide (I(-)) is an irreplaceable constituent of thyroid hormones and an important regulator of thyroid function, because high concentrations of I(-) down-regulate sodium/iodide symporter (NIS) expression and function. In thyrocytes, activation of phosphatidylinositol 3-kinase (PI3K)/protein kinase B (Akt) cascade also inhibits NIS expression and function. Because I(-) excess and PI3K/Akt signaling pathway induce similar inhibitory effects on NIS expression, we aimed to study whether the PI3K/Akt cascade mediates the acute and rapid inhibitory effect of I(-) excess on NIS expression/activity. Here, we reported that the treatment of PCCl3 cells with I(-) excess increased Akt phosphorylation under normal or TSH/insulin-starving conditions. I(-) stimulated Akt phosphorylation in a PI3K-dependent manner, because the use of PI3K inhibitors (wortmannin or 2-(4-Morpholinyl)-8-phenyl-4H-1-benzopyran-4-one) abrogated the induction of I(-) effect. Moreover, I(-) inhibitory effect on NIS expression and function were abolished when the cells were previously treated with specific inhibitors of PI3K or Akt (Akt1/2 kinase inhibitor). Importantly, we also found that the effect of I(-) on NIS expression involved the generation of reactive oxygen species (ROS). Using the fluorogenic probes dihydroethidium and mitochondrial superoxide indicator (MitoSOX Red), we observed that I(-) excess increased ROS production in thyrocytes and determined that mitochondria were the source of anion superoxide. Furthermore, the ROS scavengers N-acetyl cysteine and 2-phenyl-1,2-benzisoselenazol-3-(2H)-one blocked the effect of I(-) on Akt phosphorylation. Overall, our data demonstrated the involvement of the PI3K/Akt signaling pathway as a novel mediator of the I(-)-induced thyroid autoregulation, linking the role of thyroid oxidative state to the Wolff-Chaikoff effect.
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Affiliation(s)
- Caroline Serrano-Nascimento
- Department of Physiology and Biophysics (C.S.-N., S.d.S.T., R.T.N., M.T.N.), Institute of Biomedical Sciences, University of São Paulo, 05508-000 São Paulo, Brazil; and Centro de Investigaciones en Bioquímica Clínica e Inmunología-Consejo Nacional de Investigaciones Científicas y Técnicas (J.P.N., A.M.M.-R.), Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, X5000HUA Córdoba, Argentina
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Colin IM, Denef JF, Lengelé B, Many MC, Gérard AC. Recent insights into the cell biology of thyroid angiofollicular units. Endocr Rev 2013; 34:209-38. [PMID: 23349248 PMCID: PMC3610675 DOI: 10.1210/er.2012-1015] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2012] [Accepted: 11/07/2012] [Indexed: 01/06/2023]
Abstract
In thyrocytes, cell polarity is of crucial importance for proper thyroid function. Many intrinsic mechanisms of self-regulation control how the key players involved in thyroid hormone (TH) biosynthesis interact in apical microvilli, so that hazardous biochemical processes may occur without detriment to the cell. In some pathological conditions, this enzymatic complex is disrupted, with some components abnormally activated into the cytoplasm, which can lead to further morphological and functional breakdown. When iodine intake is altered, autoregulatory mechanisms outside the thyrocytes are activated. They involve adjacent capillaries that, together with thyrocytes, form the angiofollicular units (AFUs) that can be considered as the functional and morphological units of the thyroid. In response to iodine shortage, a rapid expansion of the microvasculature occurs, which, in addition to nutrients and oxygen, optimizes iodide supply. These changes are triggered by angiogenic signals released from thyrocytes via a reactive oxygen species/hypoxia-inducible factor/vascular endothelial growth factor pathway. When intra- and extrathyrocyte autoregulation fails, other forms of adaptation arise, such as euthyroid goiters. From onset, goiters are morphologically and functionally heterogeneous due to the polyclonal nature of the cells, with nodules distributed around areas of quiescent AFUs containing globules of compact thyroglobulin (Tg) and surrounded by a hypotrophic microvasculature. Upon TSH stimulation, quiescent AFUs are activated with Tg globules undergoing fragmentation into soluble Tg, proteins involved in TH biosynthesis being expressed and the local microvascular network extending. Over time and depending on physiological needs, AFUs may undergo repetitive phases of high, moderate, or low cell and tissue activity, which may ultimately culminate in multinodular goiters.
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Affiliation(s)
- Ides M Colin
- Pôle de Morphologie, Institut de Recherche Expérimentale et Clinique, Secteur des Sciences de la Santé, Université Catholique de Louvain (UCL), UCL-5251, 52 Avenue E. Mounier, B-1200, Bruxelles, Belgium.
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Li H, Patel J, Mortimer R, Richard K. Ontogenic changes in human placental sodium iodide symporter expression. Placenta 2012; 33:946-8. [DOI: 10.1016/j.placenta.2012.08.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/04/2012] [Revised: 07/25/2012] [Accepted: 08/17/2012] [Indexed: 10/27/2022]
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Nicola JP, Reyna-Neyra A, Carrasco N, Masini-Repiso AM. Dietary iodide controls its own absorption through post-transcriptional regulation of the intestinal Na+/I- symporter. J Physiol 2012; 590:6013-26. [PMID: 23006481 DOI: 10.1113/jphysiol.2012.241307] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
Dietary I(-) absorption in the gastrointestinal tract is the first step in I(-) metabolism. Given that I(-) is an essential constituent of the thyroid hormones, its concentrating mechanism is of significant physiological importance. We recently described the expression of the Na(+)/I(-) symporter (NIS) on the apical surface of the intestinal epithelium as a central component of the I(-) absorption system and reported reduced intestinal NIS expression in response to an I(-)-rich diet in vivo. Here, we evaluated the mechanism involved in the regulation of NIS expression by I(-) itself in enterocytes. Excess I(-) reduced NIS-mediated I(-) uptake in IEC-6 cells in a dose- and time-dependent fashion, which was correlated with a reduction of NIS expression at the plasma membrane. Perchlorate, a competitive inhibitor of NIS, prevented these effects, indicating that an increase in intracellular I(-) regulates NIS. Iodide induced rapid intracellular recruitment of plasma membrane NIS molecules and NIS protein degradation. Lower NIS mRNA levels were detected in response to I(-) treatment, although no transcriptional effect was observed. Interestingly, I(-) decreased NIS mRNA stability, affecting NIS translation. Heterologous green fluorescent protein-based reporter constructs revealed a significant repressive effect of the I(-)-targeting NIS mRNA 3 untranslated region. In conclusion, excess I(-) downregulates NIS expression in enterocytes by virtue of a complex mechanism. Our data suggest that I(-) regulates intestinal NIS mRNA expression at the post-transcriptional level as part of an autoregulatory effect of I(-) on its own metabolism.
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Affiliation(s)
- Juan Pablo Nicola
- Centro de Investigaciones en Bioquímica Clínica e Inmunología-Consejo Nacional de Investigaciones Científicas y Técnicas (CIBICI-CONICET), Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Universidad Nacional de Córdoba, Haya de la Torre y Medina Allende, X5000HUA, Córdoba, Argentina
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Gérard AC, Humblet K, Wilvers C, Poncin S, Derradji H, de Ville de Goyet C, Abou-el-Ardat K, Baatout S, Sonveaux P, Denef JF, Colin IM. Iodine-deficiency-induced long lasting angiogenic reaction in thyroid cancers occurs via a vascular endothelial growth factor-hypoxia inducible factor-1-dependent, but not a reactive oxygen species-dependent, pathway. Thyroid 2012; 22:699-708. [PMID: 22663304 DOI: 10.1089/thy.2011.0387] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
BACKGROUND In the thyroid, iodine deficiency (ID) induces angiogenesis via a tightly controlled reactive oxygen species (ROS)-hypoxia inducible factor-1 (HIF-1)-vascular endothelial growth factor (VEGF) dependent pathway (ROS-HIF-VEGF). Deficient iodine intake may be associated with increased thyroid cancer incidence. The hypothesis of this work is to test whether ID affects the angiogenic processes in thyroid malignant cells by altering the ROS-HIF-VEGF pathway. METHODS Goiters were obtained in RET/PTC3 transgenic and wild-type (wt) mice and ID was induced in three thyroid carcinoma cell lines (TPC-1, 8305c, and R082-w1). Thyroid blood flow, VEGF mRNA and protein, and HIF-1α protein expression were measured. The role of HIF-1 and of ROS was assessed using echinomycin and N-acetylcysteine (NAC), respectively. RESULTS The goitrogen treatment increased the thyroid blood flow in wt and RET/PTC3 mice. Compared with wt mice, basal VEGF expression was higher in RET/PTC3 mice and increased with goitrogen treatment. In the three cell lines, ID induced marked increases in VEGF mRNA, and moderate increases in HIF-1α protein expression that were not transient as in normal cells. ID-induced VEGF mRNA expression was fully (8305c), partially (TPC-1), or not (R082-w1) blocked by echinomycin. NAC had no effect on ID-induced VEGF mRNA and HIF-1α protein expression in the three cell lines. CONCLUSIONS ID induces a long lasting angiogenic phenotype in thyroid cancer cells that occurs through VEGF induction via a pathway partially mediated by HIF-1, but not by ROS. These results suggest that, in contrast with normal cells, ID-induced angiogenesis in cancer cells occurs via alternative and likely less controlled routes, thereby leading to uncontrolled growth.
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Affiliation(s)
- Anne-Catherine Gérard
- Department of Morphology, Institute of Experimental and Clinical Research, Catholic University of Louvain, Brussels, Belgium.
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Calil-Silveira J, Serrano-Nascimento C, Nunes MT. Iodide treatment acutely increases pendrin (SLC26A4) mRNA expression in the rat thyroid and the PCCl3 thyroid cell line by transcriptional mechanisms. Mol Cell Endocrinol 2012; 350:118-24. [PMID: 22178794 DOI: 10.1016/j.mce.2011.12.002] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2011] [Revised: 12/01/2011] [Accepted: 12/01/2011] [Indexed: 10/14/2022]
Abstract
Iodine is a critical element involved in thyroid hormone synthesis. Its efflux into the follicular lumen is thought to occur, in part, through pendrin at the apical membrane of thyrocytes. This study attempted to investigate whether iodide administration affects SLC26A4 mRNA expression in rat thyroid and in PCCl3 cells. Rats and cells were treated or not with NaI from 30 min up to 48 h. One group was concomitantly treated with sodium perchlorate. SLC26A4 mRNA expression was also investigated in PCCl3 cells treated with actinomycin D prior to NaI treatment. Iodide administration significantly increased SLC26A4 mRNA content in both models. The simultaneous administration of NaI and perchlorate, as well as the treatment of PCCl3 cells with actinomycin D prevented this effect, indicating that intracellular iodide is essential for this event, which appears to be triggered by transcriptional mechanisms. These data show that intracellular iodide rapidly upregulates SLC26A4 mRNA expression.
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Affiliation(s)
- Jamile Calil-Silveira
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo, 05508-000 São Paulo, SP, Brazil
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