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Yang X, Chen X, Wang W, Qu S, Lai B, Zhang J, Chen J, Han C, Tian Y, Xiao Y, Gao W, Wu Y. Transcriptional profile of human thymus reveals IGFBP5 is correlated with age-related thymic involution. Front Immunol 2024; 15:1322214. [PMID: 38318192 PMCID: PMC10839013 DOI: 10.3389/fimmu.2024.1322214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 01/03/2024] [Indexed: 02/07/2024] Open
Abstract
Thymus is the main immune organ which is responsible for the production of self-tolerant and functional T cells, but it shrinks rapidly with age after birth. Although studies have researched thymus development and involution in mouse, the critical regulators that arise with age in human thymus remain unclear. We collected public human single-cell transcriptomic sequencing (scRNA-seq) datasets containing 350,678 cells from 36 samples, integrated them as a cell atlas of human thymus. Clinical samples were collected and experiments were performed for validation. We found early thymocyte-specific signaling and regulons which played roles in thymocyte migration, proliferation, apoptosis and differentiation. Nevertheless, signaling patterns including number, strength and path completely changed during aging, Transcription factors (FOXC1, MXI1, KLF9, NFIL3) and their target gene, IGFBP5, were resolved and up-regulated in aging thymus and involved in promoting epithelial-mesenchymal transition (EMT), responding to steroid and adipogenesis process of thymic epithelial cell (TECs). Furthermore, we validated that IGFBP5 protein increased at TECs and Hassall's corpuscle in both human and mouse aging thymus and knockdown of IGFBP5 significantly increased the expression of proliferation-related genes in thymocytes. Collectively, we systematically explored cell-cell communications and regulons of early thymocytes as well as age-related differences in human thymus by using both bioinformatic and experimental verification, indicating IGFBP5 as a functional marker of thymic involution and providing new insights into the mechanisms of thymus involution.
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Affiliation(s)
- Xiaojing Yang
- College of Bioengineering, Chongqing University, Chongqing, China
| | - Xichan Chen
- Institute of Immunology People’s Liberation Army (PLA) & Department of Immunology, College of Basic Medicine, Army Medical University (Third Military Medical University), Chongqing, China
| | - Wei Wang
- Department of Cardiovascular Surgery, the Second Affiliated Hospital, Army Medical University, Chongqing, China
| | - Siming Qu
- Organ Transplantation Center, the First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan, China
| | - Binbin Lai
- Institute of Medical Technology, Peking University Health Science Center, Beijing, China
| | - Ji Zhang
- Institute of Immunology People’s Liberation Army (PLA) & Department of Immunology, College of Basic Medicine, Army Medical University (Third Military Medical University), Chongqing, China
| | - Jian Chen
- Institute of Immunology People’s Liberation Army (PLA) & Department of Immunology, College of Basic Medicine, Army Medical University (Third Military Medical University), Chongqing, China
| | - Chao Han
- Institute of Immunology People’s Liberation Army (PLA) & Department of Immunology, College of Basic Medicine, Army Medical University (Third Military Medical University), Chongqing, China
| | - Yi Tian
- Institute of Immunology People’s Liberation Army (PLA) & Department of Immunology, College of Basic Medicine, Army Medical University (Third Military Medical University), Chongqing, China
| | - Yingbin Xiao
- Department of Cardiovascular Surgery, the Second Affiliated Hospital, Army Medical University, Chongqing, China
| | - Weiwu Gao
- Institute of Immunology People’s Liberation Army (PLA) & Department of Immunology, College of Basic Medicine, Army Medical University (Third Military Medical University), Chongqing, China
| | - Yuzhang Wu
- College of Bioengineering, Chongqing University, Chongqing, China
- Institute of Immunology People’s Liberation Army (PLA) & Department of Immunology, College of Basic Medicine, Army Medical University (Third Military Medical University), Chongqing, China
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Qi Y, Zhang Y, Tian S, Zong R, Yan X, Wang Y, Wang Y, Zhao J. An optimized prime editing system for efficient modification of the pig genome. SCIENCE CHINA. LIFE SCIENCES 2023; 66:2851-2861. [PMID: 37505431 DOI: 10.1007/s11427-022-2334-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2023] [Accepted: 03/22/2023] [Indexed: 07/29/2023]
Abstract
Prime editing (PE) is a recent gene editing technology that can mediate insertions or deletions and all twelve types of base-to-base conversions. However, its low efficiency hampers the application in creating novel breeds and biomedical models, especially in pigs and other important farm animals. Here, we demonstrate that the pig genome is editable using the PE system, but the editing efficiency was quite low as expected. Therefore, we aimed to enhance PE efficiency by modulating both exogenous PE tools and endogenous pathways in porcine embryonic fibroblasts (PEFs). First, we modified the pegRNA by extending the duplex length and mutating the fourth thymine in a continuous sequence of thymine bases to cytosine, which significantly enhanced PE efficiency by improving the expression of pegRNA and targeted cleavage. Then, we targeted SAMHD1, a deoxynucleoside triphosphate triphosphohydrolase (dNTPase) that impedes the reverse transcription process in retroviruses, and found that treatment with its inhibitor, cephalosporin C zinc salt (CPC), increased PE efficiency up to 29-fold (4-fold on average), presumably by improving the reverse transcription process of Moloney murine leukemia virus reverse transcriptase (M-MLV RT) in the PE system. Moreover, PE efficiency was obviously improved by treatment with a panel of histone deacetylase inhibitors (HDACis). Among the four HDACis tested, panobinostat was the most efficient, with an efficiency up to 122-fold (7-fold on average), partly due to the considerable HDACi-mediated increase in transgene expression. In addition, the synergistic use of the three strategies further enhanced PE efficiency in PEFs. Our study provides novel approaches for optimization of the PE system and broadens the application scope of PE in agriculture and biomedicine.
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Affiliation(s)
- Yanan Qi
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China
| | - Ying Zhang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, 100101, China
| | - Shuangjie Tian
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China
| | - Ruojun Zong
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China
| | - Xinghui Yan
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China
| | - Yu Wang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China
| | - Yanfang Wang
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, 100081, China.
- Guangdong Laboratory for Lingnan Modern Agriculture, Guangzhou, 510642, China.
| | - Jianguo Zhao
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, 100101, China.
- University of Chinese Academy of Sciences, Beijing, 100049, China.
- Institute for Stem Cell and Regeneration, Chinese Academy of Sciences, Beijing, 100101, China.
- Beijing Institute for Stem Cell and Regenerative Medicine, Beijing, 100101, China.
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Contreras-Jurado C, Montero-Pedrazuela A, Pérez RF, Alemany S, Fraga MF, Aranda A. The thyroid hormone enhances mouse embryonic fibroblasts reprogramming to pluripotent stem cells: role of the nuclear receptor corepressor 1. Front Endocrinol (Lausanne) 2023; 14:1235614. [PMID: 38107517 PMCID: PMC10722291 DOI: 10.3389/fendo.2023.1235614] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 10/23/2023] [Indexed: 12/19/2023] Open
Abstract
Introduction Pluripotent stem cells can be generated from somatic cells by the Yamanaka factors Oct4, Sox2, Klf4 and c-Myc. Methods Mouse embryonic fibroblasts (MEFs) were transduced with the Yamanaka factors and generation of induced pluripotent stem cells (iPSCs) was assessed by formation of alkaline phosphatase positive colonies, pluripotency gene expression and embryod bodies formation. Results The thyroid hormone triiodothyronine (T3) enhances MEFs reprogramming. T3-induced iPSCs resemble embryonic stem cells in terms of the expression profile and DNA methylation pattern of pluripotency genes, and of their potential for embryod body formation and differentiation into the three major germ layers. T3 induces reprogramming even though it increases expression of the cyclin kinase inhibitors p21 and p27, which are known to oppose acquisition of pluripotency. The actions of T3 on reprogramming are mainly mediated by the thyroid hormone receptor beta and T3 can enhance iPSC generation in the absence of c-Myc. The hormone cannot replace Oct4 on reprogramming, but in the presence of T3 is possible to obtain iPSCs, although with low efficiency, without exogenous Klf4. Furthermore, depletion of the corepressor NCoR (or Nuclear Receptor Corepressor 1) reduces MEFs reprogramming in the absence of the hormone and strongly decreases iPSC generation by T3 and also by 9cis-retinoic acid, a well-known inducer of reprogramming. NCoR depletion also markedly antagonizes induction of pluripotency gene expression by both ligands. Conclusions Inclusion of T3 on reprogramming strategies has a potential use in enhancing the generation of functional iPSCs for studies of cell plasticity, disease and regenerative medicine.
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Affiliation(s)
- Constanza Contreras-Jurado
- Instituto de Investigaciones Biomédicas Sols-Morreale (IIBM), Consejo Superior de Investigaciones Científicas (CSIC)-Universidad Autónoma de Madrid (UAM), Madrid, Spain
- Departamento de Bioquímica, Facultad de Medicina, Universidad Alfonso X El Sabio, Madrid, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Instituto de Salud Carlos III, Madrid, Spain
| | - Ana Montero-Pedrazuela
- Instituto de Investigaciones Biomédicas Sols-Morreale (IIBM), Consejo Superior de Investigaciones Científicas (CSIC)-Universidad Autónoma de Madrid (UAM), Madrid, Spain
| | - Raúl F. Pérez
- Cancer Epigenetics and Nanomedicine Laboratory, Centro de Investigación en Nanomateriales y Nanotecnología (CINN), CSIC-UNIOVI-Principado de Asturias, Oviedo, Spain
- Health Research Institute of Asturias (ISPA), Oviedo, Spain
- Institute of Oncology of Asturias (IUOPA), University of Oviedo, Oviedo, Spain
- Department of Organisms and Systems Biology (BOS), University of Oviedo, Oviedo, Spain
- CIBER of Rare Diseases (CIBERER), Oviedo, Spain
| | - Susana Alemany
- Instituto de Investigaciones Biomédicas Sols-Morreale (IIBM), Consejo Superior de Investigaciones Científicas (CSIC)-Universidad Autónoma de Madrid (UAM), Madrid, Spain
| | - Mario F. Fraga
- Cancer Epigenetics and Nanomedicine Laboratory, Centro de Investigación en Nanomateriales y Nanotecnología (CINN), CSIC-UNIOVI-Principado de Asturias, Oviedo, Spain
- Health Research Institute of Asturias (ISPA), Oviedo, Spain
- Institute of Oncology of Asturias (IUOPA), University of Oviedo, Oviedo, Spain
- Department of Organisms and Systems Biology (BOS), University of Oviedo, Oviedo, Spain
- CIBER of Rare Diseases (CIBERER), Oviedo, Spain
| | - Ana Aranda
- Instituto de Investigaciones Biomédicas Sols-Morreale (IIBM), Consejo Superior de Investigaciones Científicas (CSIC)-Universidad Autónoma de Madrid (UAM), Madrid, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Instituto de Salud Carlos III, Madrid, Spain
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Simmen FA, Alhallak I, Simmen RCM. Krüppel-like Factor-9 and Krüppel-like Factor-13: Highly Related, Multi-Functional, Transcriptional Repressors and Activators of Oncogenesis. Cancers (Basel) 2023; 15:5667. [PMID: 38067370 PMCID: PMC10705314 DOI: 10.3390/cancers15235667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2023] [Revised: 11/16/2023] [Accepted: 11/27/2023] [Indexed: 02/12/2024] Open
Abstract
Specificity Proteins/Krüppel-like Factors (SP/KLF family) are a conserved family of transcriptional regulators. These proteins share three highly conserved, contiguous zinc fingers in their carboxy-terminus, requisite for binding to cis elements in DNA. Each SP/KLF protein has unique primary sequence within its amino-terminal and carboxy-terminal regions, and it is these regions which interact with co-activators, co-repressors, and chromatin-modifying proteins to support the transcriptional activation and repression of target genes. Krüppel-like Factor 9 (KLF9) and Krüppel-like Factor 13 (KLF13) are two of the smallest members of the SP/KLF family, are paralogous, emerged early in metazoan evolution, and are highly conserved. Paradoxically, while most similar in primary sequence, KLF9 and KLF13 display many distinct roles in target cells. In this article, we summarize the work that has identified the roles of KLF9 (and to a lesser degree KLF13) in tumor suppression or promotion via unique effects on differentiation, pro- and anti-inflammatory pathways, oxidative stress, and tumor immune cell infiltration. We also highlight the great diversity of miRNAs, lncRNAs, and circular RNAs which provide mechanisms for the ubiquitous tumor-specific suppression of KLF9 mRNA and protein. Elucidation of KLF9 and KLF13 in cancer biology is likely to provide new inroads to the understanding of oncogenesis and its prevention and treatments.
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Affiliation(s)
- Frank A. Simmen
- Department of Physiology & Cell Biology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (I.A.); (R.C.M.S.)
- The Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
| | - Iad Alhallak
- Department of Physiology & Cell Biology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (I.A.); (R.C.M.S.)
| | - Rosalia C. M. Simmen
- Department of Physiology & Cell Biology, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA; (I.A.); (R.C.M.S.)
- The Winthrop P. Rockefeller Cancer Institute, University of Arkansas for Medical Sciences, Little Rock, AR 72205, USA
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5
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Sitoris G, Veltri F, Jelloul E, Kleynen P, Rozenberg S, Poppe KG. Impact of thyroid hormone treatment on maternal pregnancy outcomes in women with subclinical hypothyroidism without TPOAb: a retrospective cross-sectional study. Thyroid Res 2023; 16:29. [PMID: 37691132 PMCID: PMC10494333 DOI: 10.1186/s13044-023-00171-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2023] [Accepted: 07/03/2023] [Indexed: 09/12/2023] Open
Abstract
BACKGROUND Evidence on the impact of thyroid hormone treatment (LT4) on maternal pregnancy outcomes in women with subclinical hypothyroidism (SCH) without thyroid peroxidase antibodies (TPOAb) positivity is scarce. METHODS Single centre, cross-sectional study in 1460 women screened for TSH, free T4 and TPOAb at median 13 (11-17) weeks of gestation during the period 2013-2014. Exclusion criteria were twin- and assisted reproduction pregnancies, TPO positivity, overt thyroid dysfunction, and treatment with LT4 before screening. The impact of LT4 on maternal pregnancy outcomes was investigated in a group of 53 women with SCH (TSH > 3.74 mIU/L) in which LT4 was initiated at median 13 (10-22) weeks (treated group). The control group included 18 women with SCH (TSH > 3.74 mIU/L). The prevalence of pregnancy complications in these two groups was compared with that in a euthyroid reference (REF) group of 1389 women (TSH ≤ 3.74 mIU/L). RESULTS The prevalence of pre-eclampsia and gestational diabetes (GDM) was higher in the control group vs the REF group (16.7% vs 5.0% and 27.8% vs 18.9%; p = 0.017 and p = 0.016, respectively), but comparable in the treated group vs the REF group (7.6% vs 5.0% and 22.6% vs 18.9%; p = 0.918 and 0.676, respectively). The prevalence of iron-deficiency anaemia was lower in the treated vs the REF group (17.0% vs 32.5%; p = 0.017). CONCLUSION Pregnant women with untreated SCH and without TPOAb positivity had a higher prevalence of pre-eclampsia and GDM compared with euthyroid women, while this was not the case in women with treated SCH, even when it was initiated after the first trimester.
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Affiliation(s)
- Georgiana Sitoris
- Endocrine Unit Centre Hospitalier Universitaire Saint-Pierre, Université Libre de Bruxelles (ULB), Rue Haute 322, Brussels, 1000, Belgium
| | - Flora Veltri
- Endocrine Unit Centre Hospitalier Universitaire Saint-Pierre, Université Libre de Bruxelles (ULB), Rue Haute 322, Brussels, 1000, Belgium
| | - Emna Jelloul
- Endocrine Unit Centre Hospitalier Universitaire Saint-Pierre, Université Libre de Bruxelles (ULB), Rue Haute 322, Brussels, 1000, Belgium
| | - Pierre Kleynen
- Endocrine Unit Centre Hospitalier Universitaire Saint-Pierre, Université Libre de Bruxelles (ULB), Rue Haute 322, Brussels, 1000, Belgium
| | - Serge Rozenberg
- Departement of Gynecology and Obstetrics, Centre Hospitalier Universitaire Saint-Pierre, Université Libre de Bruxelles (ULB), Rue Haute 322, Brussels, 1000, Belgium
| | - Kris G Poppe
- Endocrine Unit Centre Hospitalier Universitaire Saint-Pierre, Université Libre de Bruxelles (ULB), Rue Haute 322, Brussels, 1000, Belgium.
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Drepanos L, Gans IM, Grendler J, Guitar S, Fuqua JH, Maki NJ, Tilden AR, Graber JH, Coffman JA. Loss of Krüppel-like factor 9 deregulates both physiological gene expression and development. Sci Rep 2023; 13:12239. [PMID: 37507475 PMCID: PMC10382561 DOI: 10.1038/s41598-023-39453-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Accepted: 07/25/2023] [Indexed: 07/30/2023] Open
Abstract
Krüppel-like factor 9 (Klf9) is a ubiquitously expressed transcription factor that is a feedforward regulator of multiple stress-responsive and endocrine signaling pathways. We previously described how loss of Klf9 function affects the transcriptome of zebrafish larvae sampled at a single time point 5 days post-fertilization (dpf). However, klf9 expression oscillates diurnally, and the sampled time point corresponded to its expression nadir. To determine if the transcriptomic effects of the klf9-/- mutation vary with time of day, we performed bulk RNA-seq on 5 dpf zebrafish embryos sampled at three timepoints encompassing the predawn peak and midmorning nadir of klf9 expression. We found that while the major effects of the klf9-/- mutation that we reported previously are robust to time of day, the mutation has additional effects that manifest only at the predawn time point. We used a published single-cell atlas of zebrafish development to associate the effects of the klf9-/- mutation with different cell types and found that the mutation increased mRNA associated with digestive organs (liver, pancreas, and intestine) and decreased mRNA associated with differentiating neurons and blood. Measurements from confocally-imaged larvae suggest that overrepresentation of liver mRNA in klf9-/- mutants is due to development of enlarged livers.
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Affiliation(s)
| | - Ian M Gans
- MDI Biological Laboratory, Salisbury Cove, ME, USA
- Graduate School of Biomedical Sciences and Engineering, University of Maine, Orono, ME, USA
| | | | | | | | | | | | | | - James A Coffman
- MDI Biological Laboratory, Salisbury Cove, ME, USA.
- Graduate School of Biomedical Sciences and Engineering, University of Maine, Orono, ME, USA.
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McGuire CC, Robert JR. Environmental endocrine disruptors and amphibian immunity: A bridge between the thyroid hormone axis and T cell development. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2023; 140:104617. [PMID: 36529309 PMCID: PMC9892850 DOI: 10.1016/j.dci.2022.104617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 12/11/2022] [Accepted: 12/12/2022] [Indexed: 06/17/2023]
Abstract
Immunity is susceptible to reprogramming by environmental chemical and endocrine signals. Notably, numerous thyroid disrupting chemicals (TDCs) have the potential to perturb immune endpoints, but data are lacking on the mechanisms by which TDCs can influence the development of the immune system. T cell immunity is particularly vulnerable to modulation by TDCs during thymic education, differentiation, and selection. The following review discusses the ways in which thyroid hormones may influence T cell development, as well as emerging TDCs with potential to impact both thyroid hormone physiology and immune outcomes. To overcome the challenges of studying TDC impacts on immune toxicological endpoints, a comparative approach using the amphibian Xenopus laevis is recommended. X. laevis are ideally suited to studying TDC impacts on immunity due to the importance of thyroid hormones for metamorphosis, and the wealth of immunological models to measure immune endpoints in both tadpoles and adult frogs.
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Affiliation(s)
- Connor C McGuire
- University of Rochester Department of Microbiology and Immunology, USA; University of Rochester Department Environmental Medicine, USA
| | - Jacques R Robert
- University of Rochester Department of Microbiology and Immunology, USA; University of Rochester Department Environmental Medicine, USA.
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Menéndez-Gutiérrez MP, Porcuna J, Nayak R, Paredes A, Niu H, Núñez V, Paranjpe A, Gómez MJ, Bhattacharjee A, Schnell DJ, Sánchez-Cabo F, Welch JS, Salomonis N, Cancelas JA, Ricote M. Retinoid X receptor promotes hematopoietic stem cell fitness and quiescence and preserves hematopoietic homeostasis. Blood 2023; 141:592-608. [PMID: 36347014 PMCID: PMC10082360 DOI: 10.1182/blood.2022016832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 10/20/2022] [Accepted: 10/30/2022] [Indexed: 11/10/2022] Open
Abstract
Hematopoietic stem cells (HSCs) balance self-renewal and differentiation to maintain hematopoietic fitness throughout life. In steady-state conditions, HSC exhaustion is prevented by the maintenance of most HSCs in a quiescent state, with cells entering the cell cycle only occasionally. HSC quiescence is regulated by retinoid and fatty-acid ligands of transcriptional factors of the nuclear retinoid X receptor (RXR) family. Herein, we show that dual deficiency for hematopoietic RXRα and RXRβ induces HSC exhaustion, myeloid cell/megakaryocyte differentiation, and myeloproliferative-like disease. RXRα and RXRβ maintain HSC quiescence, survival, and chromatin compaction; moreover, transcriptome changes in RXRα;RXRβ-deficient HSCs include premature acquisition of an aging-like HSC signature, MYC pathway upregulation, and RNA intron retention. Fitness loss and associated RNA transcriptome and splicing alterations in RXRα;RXRβ-deficient HSCs are prevented by Myc haploinsufficiency. Our study reveals the critical importance of RXRs for the maintenance of HSC fitness and their protection from premature aging.
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Affiliation(s)
| | - Jesús Porcuna
- Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain
| | - Ramesh Nayak
- Stem Cell Program, Division of Experimental Hematology and Cancer Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH
- Hoxworth Blood Center, University of Cincinnati College of Medicine, Cincinnati, OH
| | - Ana Paredes
- Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain
| | - Haixia Niu
- Stem Cell Program, Division of Experimental Hematology and Cancer Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH
- Department of Pediatrics, University of Cincinnati College of Medicine, Cincinnati, OH
| | - Vanessa Núñez
- Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain
| | - Aditi Paranjpe
- Division of Biomedical Informatics, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH
| | - Manuel J. Gómez
- Bioinformatics Unit, Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain
| | - Anukana Bhattacharjee
- Division of Biomedical Informatics, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH
| | - Daniel J. Schnell
- Division of Biomedical Informatics, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH
| | - Fátima Sánchez-Cabo
- Bioinformatics Unit, Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain
| | - John S. Welch
- Department of Internal Medicine, Washington University, St Louis, MO
| | - Nathan Salomonis
- Division of Biomedical Informatics, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH
- Department of Internal Medicine, Washington University, St Louis, MO
| | - Jose A. Cancelas
- Stem Cell Program, Division of Experimental Hematology and Cancer Biology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH
- Hoxworth Blood Center, University of Cincinnati College of Medicine, Cincinnati, OH
- Division of Biomedical Informatics, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH
| | - Mercedes Ricote
- Centro Nacional de Investigaciones Cardiovasculares, Madrid, Spain
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Mohamedahmed KA, Mubarak MO, Talha AA. Assessment of Red Cell Distribution Width among Sudanese Patients with Hypothyroidism.. [DOI: 10.21203/rs.3.rs-2518318/v1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
Abstract
Abstract
Background: Thyroid dysfunction has a strong linkage with anemia. RDW was traditionally regarded as a part of routine evaluation of anemia Elevated RDW level was significantly associated with subclinical hypothyroidism and hypothyroidism.
Objectives: The aim of this is study to assess the Red Cell Distribution Width (RDW-CV and RDW-SD) in patients with hypothyroidism.
Methodology: This is a case-control laboratory-based study conducted among 50 patients with hypothyroidism as cases (38.50 ± 10.46 years; 36% males and 64% females) and 50 normal healthy individuals as controls (35.52 ± 11.64 years; 46% males and 54% females) in National Cancer Institute – University of Gezira (NCI-UG), Gezira State, Sudan from January to October 2020. Three ml of venous blood sample was collected in an EDTA container. Red cell parameters (RBC count, MCV, RDW-CV, and RDW-SD) were measured using Sysmex XP 300 Cell Counter. SPSS computer program (v 22.0) was used for data analysis.
Results: The average RDW (SD and CV) of cases were higher than controls (P value = 0.000, 0.000 respectively). There was a significant difference in RDW-CV between mild and severe hypothyroidism (P value = 0.040). RDW-SD and RDW-CV had significant positive correlation within TSH (r = 0.361, P value = 0.000; r = 0.407, P value = 0.000 respectively) and significant negative correlation within T3 (r = - 0.419, P value = 0.000; r = - 0.507, P value = 0.000 respectively) and T4 (r = - 0.406, P value = 0.000; r = - 0.506, P value = 0.000 respectively).
Conclusion: The study concluded that RDW was significantly higher in patients with hypothyroidism and had a significant positive correlation with TSH and a significant negative correlation within T3 and T4. So, RDW may be used as a significant clinical marker of hypothyroidism.
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De Novo Generation of Human Hematopoietic Stem Cells from Pluripotent Stem Cells for Cellular Therapy. Cells 2023; 12:cells12020321. [PMID: 36672255 PMCID: PMC9857267 DOI: 10.3390/cells12020321] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Revised: 01/02/2023] [Accepted: 01/11/2023] [Indexed: 01/19/2023] Open
Abstract
The ability to manufacture human hematopoietic stem cells (HSCs) in the laboratory holds enormous promise for cellular therapy of human blood diseases. Several differentiation protocols have been developed to facilitate the emergence of HSCs from human pluripotent stem cells (PSCs). Most approaches employ a stepwise addition of cytokines and morphogens to recapitulate the natural developmental process. However, these protocols globally lack clinical relevance and uniformly induce PSCs to produce hematopoietic progenitors with embryonic features and limited engraftment and differentiation capabilities. This review examines how key intrinsic cues and extrinsic environmental inputs have been integrated within human PSC differentiation protocols to enhance the emergence of definitive hematopoiesis and how advances in genomics set the stage for imminent breakthroughs in this field.
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11
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Liu L, Liu Q, Zou X, Chen Q, Wang X, Gao Z, Jiang J. Identification of thyroid hormone response genes in the remodeling of dorsal muscle during Microhyla fissipes metamorphosis. Front Endocrinol (Lausanne) 2023; 14:1099130. [PMID: 36817577 PMCID: PMC9937655 DOI: 10.3389/fendo.2023.1099130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Accepted: 01/02/2023] [Indexed: 02/05/2023] Open
Abstract
INTRODUCTION Extensive morphological, biochemical, and cellular changes occur during anuran metamorphosis, which is triggered by a single hormone, thyroid hormone (TH). The function of TH is mainly mediated through thyroid receptor (TR) by binding to the specific thyroid response elements (TREs) of direct response genes, in turn regulating the downstream genes in the cascade. The remodeling of dorsal skeletal muscle during anuran metamorphosis provides the perfect model to identify the immediate early and direct response genes that are important during apoptosis, proliferation, and differentiation of the muscle. METHODS In our current study, we performed Illumina sequencing combined with single-molecule real-time (SMRT) sequencing in the dorsal muscle of Microhyla fissipes after TH, cycloheximide (CHX), and TH_CHX treatment. RESULTS AND DISCUSSION We first identified 1,245 differentially expressed transcripts (DETs) after TH exposure, many of which were involved in DNA replication, protein processing in the endoplasmic reticulum, cell cycle, apoptosis, p53 signaling pathway, and protein digestion and absorption. In the comparison of the TH group vs. control group and TH_CHX group vs. CHX group overlapping gene, 39 upregulated and 6 downregulated genes were identified as the TH directly induced genes. Further analysis indicated that AGGTCAnnTnAGGTCA is the optimal target sequence of target genes for TR/RXR heterodimers in M. fissipes. Future investigations on the function and regulation of these genes and pathways should help to reveal the mechanisms governing amphibian dorsal muscle remodeling. These full-length and high-quality transcriptomes in this study also provide an important foundation for future studies in M. fissipes metamorphosis.
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Affiliation(s)
- Lusha Liu
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China
- College of Fisheries, Huazhong Agricultural University, Wuhan, China
| | - Qi Liu
- College of Fisheries, Huazhong Agricultural University, Wuhan, China
| | - Xue Zou
- College of Fisheries, Huazhong Agricultural University, Wuhan, China
| | - Qiheng Chen
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Xungang Wang
- Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining, China
| | - Zexia Gao
- College of Fisheries, Huazhong Agricultural University, Wuhan, China
- *Correspondence: Zexia Gao, ; Jianping Jiang,
| | - Jianping Jiang
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, China
- University of Chinese Academy of Sciences, Beijing, China
- CAS Key Laboratory of Mountain Ecological Restoration and Bioresource Utilization & Ecological Restoration and Biodiversity Conservation Key Laboratory of Sichuan Province, Chengdu, China
- *Correspondence: Zexia Gao, ; Jianping Jiang,
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12
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Liu S, Liu M, Zhang ML, Wang CZ, Zhang YL, Zhang YJ, Du CY, Sheng SF, Wang W, Fan YT, Song JN, Huang JC, Feng YY, Qiao W, Huang JL, Li YH, Zhou L, Zhang J, Chang YS. Transcription factor Klf9 controls bile acid reabsorption and enterohepatic circulation in mice via promoting intestinal Asbt expression. Acta Pharmacol Sin 2022; 43:2362-2372. [PMID: 35105957 PMCID: PMC9433408 DOI: 10.1038/s41401-021-00850-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Accepted: 12/21/2021] [Indexed: 11/09/2022] Open
Abstract
Bile acid (BA) homeostasis is regulated by the extensive cross-talk between liver and intestine. Many bile-acid-activated signaling pathways have become attractive therapeutic targets for the treatment of metabolic disorders. In this study we investigated the regulatory mechanisms of BA in the intestine. We showed that the BA levels in the gallbladder and faeces were significantly increased, whereas serum BA levels decreased in systemic Krüppel-like factor 9 (Klf9) deficiency (Klf9-/-) mice. These phenotypes were also observed in the intestine-specific Klf9-deleted (Klf9vil-/-) mice. In contrast, BA levels in the gallbladder and faeces were reduced, whereas BA levels in the serum were increased in intestinal Klf9 transgenic (Klf9Rosa26+/+) mice. By using a combination of biochemical, molecular and functional assays, we revealed that Klf9 promoted the expression of apical sodium-dependent bile acid transporter (Asbt) in the terminal ileum to enhance BA absorption in the intestine. Reabsorbed BA affected liver BA synthetic enzymes by regulating Fgf15 expression. This study has identified a previously neglected transcriptional pathway that regulates BA homeostasis.
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Affiliation(s)
- Shuang Liu
- Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Key Laboratory of Cellular Homeostasis and Disease, Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin, 300052, China
| | - Man Liu
- Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Key Laboratory of Cellular Homeostasis and Disease, Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin, 300052, China
| | - Meng-Lin Zhang
- Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Key Laboratory of Cellular Homeostasis and Disease, Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin, 300052, China
| | - Cui-Zhe Wang
- Department of Basic Medicine, Shihezi University School of Medicine, Shihezi, 832000, China
| | - Yin-Liang Zhang
- Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Key Laboratory of Cellular Homeostasis and Disease, Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin, 300052, China
| | - Yu-Jie Zhang
- Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Key Laboratory of Cellular Homeostasis and Disease, Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin, 300052, China
| | - Chun-Yuan Du
- Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Key Laboratory of Cellular Homeostasis and Disease, Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin, 300052, China
| | - Su-Fang Sheng
- Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Key Laboratory of Cellular Homeostasis and Disease, Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin, 300052, China
| | - Wei Wang
- Key Laboratory of Biotechnology of Hubei Province, Key Laboratory of Biotechnology of Chinese Traditional Medicine, National & Local Joint Engineering Research Center of High-throughput Drug Screening Technology, Hubei University, Wuhan, 430062, China
| | - Ya-Tong Fan
- Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Key Laboratory of Cellular Homeostasis and Disease, Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin, 300052, China
| | - Jia-Ni Song
- Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Key Laboratory of Cellular Homeostasis and Disease, Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin, 300052, China
| | - Jin-Can Huang
- Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Key Laboratory of Cellular Homeostasis and Disease, Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin, 300052, China
| | - Yue-Yao Feng
- Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Key Laboratory of Cellular Homeostasis and Disease, Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin, 300052, China
| | - Wei Qiao
- Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Key Laboratory of Cellular Homeostasis and Disease, Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin, 300052, China
| | - Jin-Long Huang
- Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Key Laboratory of Cellular Homeostasis and Disease, Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin, 300052, China
| | - Yu-Hui Li
- Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Key Laboratory of Cellular Homeostasis and Disease, Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin, 300052, China
| | - Lu Zhou
- Department of Gastroenterology and Hepatology, Tianjin Medical University General Hospital, Tianjin, 300052, China.
| | - Jun Zhang
- Department of Basic Medicine, Shihezi University School of Medicine, Shihezi, 832000, China.
| | - Yong-Sheng Chang
- Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Key Laboratory of Cellular Homeostasis and Disease, Department of Physiology and Pathophysiology, Tianjin Medical University, Tianjin, 300052, China.
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13
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Spirhanzlova P, Couderq S, Le Mével S, Leemans M, Krief S, Mughal BB, Demeneix BA, Fini JB. Short- and Long-Term Effects of Chlorpyrifos on Thyroid Hormone Axis and Brain Development in Xenopus laevis. Neuroendocrinology 2022; 113:1298-1311. [PMID: 35753306 DOI: 10.1159/000525719] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2022] [Accepted: 06/20/2022] [Indexed: 11/19/2022]
Abstract
INTRODUCTION The extensive use of the insecticide chlorpyrifos (CPF) throughout the world has brought increased scrutiny on its environmental and health impact. CPF is a cholinergic neurotoxicant; however, exposure to low noncholinergic doses is associated with numerous neurodevelopmental effects in animal models. In this study, we aimed to assess CPF for its potential to disrupt thyroid hormone signalling and investigate the short- and long-term effects on neurodevelopment by using Xenopus laevis. METHODS The thyroid hormone (TH) disrupting potential of CPF was assessed using TH-sensitive transgenic Tg(thibz:eGFP) tadpoles. The consequences of early embryonic exposure were examined by exposing fertilized eggs for 72 h to environmentally relevant CPF concentrations (10-10 M and 10-8 M). Three endpoints were evaluated: (1) gene expression in whole embryonic brains immediately after exposure, (2) mobility and brain morphology 1 week after exposure, and (3) brain morphology and axon diameters at the end of metamorphosis (2 months after the exposure). RESULTS CPF disrupted TH signalling in Tg(thibz:eGFP) tadpoles. The expression of genes klf9, cntn4, oatp1c1, and tubb2b was downregulated in response to CPF. Tadpoles exposed to CPF exhibited increased mobility and altered brain morphology compared to control tadpoles. Early embryonic exposure of CPF affected myelinated axon diameter, with exposed animals exhibiting shifted frequency distributions of myelinated axons diameters towards smaller diameters in the hindbrain of froglets. DISCUSSION/CONCLUSION This study provides more evidence of the endocrine and neurodevelopment disrupting activity of CPF. Further experimental and epidemiological studies are warranted to determine the long-term consequences of early CPF exposure on brain development.
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Affiliation(s)
- Petra Spirhanzlova
- Unité PhyMA Laboratory, Adaptation du Vivant, Muséum National d'Histoire Naturelle, Paris, France
- Unité Eco-Anthropologie, Hommes et Environnements, Muséum National d'Histoire Naturelle, Musée de l'Homme, Paris, France
- Laboratoire de Métrologie et d'Essais, Paris, France
| | - Stephan Couderq
- Unité PhyMA Laboratory, Adaptation du Vivant, Muséum National d'Histoire Naturelle, Paris, France
| | - Sébastian Le Mével
- Unité PhyMA Laboratory, Adaptation du Vivant, Muséum National d'Histoire Naturelle, Paris, France
| | - Michelle Leemans
- Unité PhyMA Laboratory, Adaptation du Vivant, Muséum National d'Histoire Naturelle, Paris, France
| | - Sabrina Krief
- Unité Eco-Anthropologie, Hommes et Environnements, Muséum National d'Histoire Naturelle, Musée de l'Homme, Paris, France
| | - Bilal B Mughal
- Unité PhyMA Laboratory, Adaptation du Vivant, Muséum National d'Histoire Naturelle, Paris, France
| | - Barbara A Demeneix
- Unité PhyMA Laboratory, Adaptation du Vivant, Muséum National d'Histoire Naturelle, Paris, France
| | - Jean-Baptiste Fini
- Unité PhyMA Laboratory, Adaptation du Vivant, Muséum National d'Histoire Naturelle, Paris, France
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14
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Hou N, Du X, Wu S. Advances in pig models of human diseases. Animal Model Exp Med 2022; 5:141-152. [PMID: 35343091 PMCID: PMC9043727 DOI: 10.1002/ame2.12223] [Citation(s) in RCA: 26] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Revised: 02/14/2022] [Accepted: 03/02/2022] [Indexed: 01/07/2023] Open
Abstract
Animal models of human diseases play a critical role in medical research. Pigs are anatomically and physiologically more like humans than are small rodents such as mice, making pigs an attractive option for modeling human diseases. Advances in recent years in genetic engineering have facilitated the rapid rise of pig models for use in studies of human disease. In the present review, we summarize the current status of pig models for human cardiovascular, metabolic, neurodegenerative, and various genetic diseases. We also discuss areas that need to be improved. Animal models of human diseases play a critical role in medical research. Advances in recent years in genetic engineering have facilitated the rapid rise of pig models for use in studies of human disease. In the present review, we summarize the current status of pig models for human cardiovascular, metabolic, neurodegenerative, various genetic diseases and xenotransplantation.
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Affiliation(s)
- Naipeng Hou
- College of Animal Science and Technology, China Agricultural University, Beijing, China.,Sanya Institute of China Agricultural University, Sanya, China
| | - Xuguang Du
- Sanya Institute of China Agricultural University, Sanya, China.,State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
| | - Sen Wu
- College of Animal Science and Technology, China Agricultural University, Beijing, China.,Sanya Institute of China Agricultural University, Sanya, China.,State Key Laboratory of Agrobiotechnology, College of Biological Sciences, China Agricultural University, Beijing, China
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15
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Shepherd R, Kim B, Saffery R, Novakovic B. Triiodothyronine (T3) Induces Limited Transcriptional and DNA Methylation Reprogramming in Human Monocytes. Biomedicines 2022; 10:biomedicines10030608. [PMID: 35327410 PMCID: PMC8945024 DOI: 10.3390/biomedicines10030608] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2022] [Revised: 02/14/2022] [Accepted: 02/27/2022] [Indexed: 11/16/2022] Open
Abstract
Thyroid hormones have immunomodulatory roles, but their effects on the transcriptome and epigenome of innate immune cell types remain unexplored. In this study, we investigate the effects of triiodothyronine (T3) on the transcriptome and methylome of human monocytes in vitro, both in resting and lipopolysaccharide (LPS)-stimulated conditions. In resting monocytes, 5 µM T3 affected the expression of a small number of monocyte-to-macrophage differentiation-associated genes, including TLR4 (p-value < 0.05, expression fold change >1.5). T3 attenuated a small proportion of monocyte-to-macrophage differentiation-associated DNA methylation changes, while specifically inducing DNA methylation changes at several hundred differentially methylated CpG probes (DMPs) (p-value < 0.05, Δβ > 0.05). In LPS-stimulated monocytes, the presence of T3 attenuated the effect of 27% of LPS-induced DMPs (p-value < 0.05, Δβ > 0.05). Interestingly, co-stimulation with T3 + LPS induced a unique DNA methylation signature that was not observed in the LPS-only or T3-only exposure groups. Our results suggest that T3 induces limited transcriptional and DNA methylation remodeling in genes enriched in metabolism and immune processes and alters the normal in vitro LPS response. The overlap between differentially expressed genes and genes associated with DMPs was minimal; thus, other epigenetic mechanisms may underpin the expression changes. This research provides insight into the complex interplay between thyroid hormones, epigenetic remodeling, and transcriptional dynamics in monocytes.
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Affiliation(s)
- Rebecca Shepherd
- Molecular Immunity, Infection and Immunity Theme, Murdoch Children’s Research Institute, Parkville, VIC 3052, Australia; (R.S.); (B.K.); (R.S.)
| | - Bowon Kim
- Molecular Immunity, Infection and Immunity Theme, Murdoch Children’s Research Institute, Parkville, VIC 3052, Australia; (R.S.); (B.K.); (R.S.)
| | - Richard Saffery
- Molecular Immunity, Infection and Immunity Theme, Murdoch Children’s Research Institute, Parkville, VIC 3052, Australia; (R.S.); (B.K.); (R.S.)
- Department of Paediatrics, The University of Melbourne, Parkville, VIC 3052, Australia
| | - Boris Novakovic
- Molecular Immunity, Infection and Immunity Theme, Murdoch Children’s Research Institute, Parkville, VIC 3052, Australia; (R.S.); (B.K.); (R.S.)
- Department of Paediatrics, The University of Melbourne, Parkville, VIC 3052, Australia
- Correspondence:
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16
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Structure-guided approach to relieving transcriptional repression inResistance to Thyroid Hormone α. Mol Cell Biol 2021; 42:e0036321. [PMID: 34871063 PMCID: PMC8852717 DOI: 10.1128/mcb.00363-21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Mutations in thyroid hormone receptor α (TRα), a ligand-inducible transcription factor, cause Resistance to Thyroid Hormone α (RTHα). This disorder is characterised by tissue-specific hormone refractoriness and hypothyroidism, due to inhibition of target gene expression by mutant TRα-corepressor complexes. Using biophysical approaches, we show that RTHα-associated TRα mutants devoid of ligand-dependent transcription activation function, unexpectedly retain the ability to bind thyroid hormone. Visualisation of ligand (T3) within the crystal structure of a prototypic TRα mutant, validates this notion. This finding prompted synthesis of different thyroid hormone analogues, identifying a lead compound (ES08) which dissociates corepressor from mutant human TRα more efficaciously than T3. ES08 rescues developmental anomalies in a zebrafish model of RTHα and induces target gene expression in TRα mutation-containing cells from an RTHα patient, more effectively than T3. Our observations provide proof-of-principle for developing synthetic ligands that can relieve transcriptional repression by the mutant TRα-corepressor complex, for treatment of RTHα.
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17
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Gans IM, Grendler J, Babich R, Jayasundara N, Coffman JA. Glucocorticoid-Responsive Transcription Factor Krüppel-Like Factor 9 Regulates fkbp5 and Metabolism. Front Cell Dev Biol 2021; 9:727037. [PMID: 34692682 PMCID: PMC8526736 DOI: 10.3389/fcell.2021.727037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2021] [Accepted: 09/15/2021] [Indexed: 12/30/2022] Open
Abstract
Krüppel-like factor 9 (Klf9) is a feedforward regulator of glucocorticoid receptor (GR) signaling. Here we show that in zebrafish klf9 is expressed with GR-dependent oscillatory dynamics in synchrony with fkbp5, a GR target that encodes a negative feedback regulator of GR signaling. We found that fkbp5 transcript levels are elevated in klf9 -/- mutants and that Klf9 associates with chromatin at the fkbp5 promoter, which becomes hyperacetylated in klf9 -/ - mutants, suggesting that the GR regulates fkbp5 via an incoherent feedforward loop with klf9. As both the GR and Fkbp5 are known to regulate metabolism, we asked how loss of Klf9 affects metabolic rate and gene expression. We found that klf9 -/- mutants have a decreased oxygen consumption rate (OCR) and upregulate glycolytic genes, the promoter regions of which are enriched for potential Klf9 binding motifs. Our results suggest that Klf9 functions downstream of the GR to regulate cellular glucocorticoid responsivity and metabolic homeostasis.
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Affiliation(s)
- Ian M. Gans
- MDI Biological Laboratory, Bar Harbor, ME, United States
- Graduate School of Biomedical Science and Engineering, University of Maine, Orono, ME, United States
| | | | - Remy Babich
- The School of Marine Sciences, University of Maine, Orono, ME, United States
| | - Nishad Jayasundara
- Nicholas School of the Environment, Duke University, Durham, NC, United States
| | - James A. Coffman
- MDI Biological Laboratory, Bar Harbor, ME, United States
- Graduate School of Biomedical Science and Engineering, University of Maine, Orono, ME, United States
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18
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Sugden WW, North TE. Making Blood from the Vessel: Extrinsic and Environmental Cues Guiding the Endothelial-to-Hematopoietic Transition. Life (Basel) 2021; 11:life11101027. [PMID: 34685398 PMCID: PMC8539454 DOI: 10.3390/life11101027] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 09/25/2021] [Accepted: 09/27/2021] [Indexed: 01/10/2023] Open
Abstract
It is increasingly recognized that specialized subsets of endothelial cells carry out unique functions in specific organs and regions of the vascular tree. Perhaps the most striking example of this specialization is the ability to contribute to the generation of the blood system, in which a distinct population of “hemogenic” endothelial cells in the embryo transforms irreversibly into hematopoietic stem and progenitor cells that produce circulating erythroid, myeloid and lymphoid cells for the lifetime of an animal. This review will focus on recent advances made in the zebrafish model organism uncovering the extrinsic and environmental factors that facilitate hemogenic commitment and the process of endothelial-to-hematopoietic transition that produces blood stem cells. We highlight in particular biomechanical influences of hemodynamic forces and the extracellular matrix, metabolic and sterile inflammatory cues present during this developmental stage, and outline new avenues opened by transcriptomic-based approaches to decipher cell–cell communication mechanisms as examples of key signals in the embryonic niche that regulate hematopoiesis.
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Affiliation(s)
- Wade W. Sugden
- Stem Cell Program, Department of Hematology/Oncology, Boston Children’s Hospital, Boston, MA 02115, USA;
- Developmental and Regenerative Biology Program, Harvard Medical School, Boston, MA 02115, USA
| | - Trista E. North
- Stem Cell Program, Department of Hematology/Oncology, Boston Children’s Hospital, Boston, MA 02115, USA;
- Developmental and Regenerative Biology Program, Harvard Medical School, Boston, MA 02115, USA
- Correspondence:
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19
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McGuire CC, Lawrence BP, Robert J. Thyroid Disrupting Chemicals in Mixture Perturb Thymocyte Differentiation in Xenopus laevis Tadpoles. Toxicol Sci 2021; 181:262-272. [PMID: 33681995 DOI: 10.1093/toxsci/kfab029] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Endocrine disrupting chemicals (EDCs) can perturb the hypothalamic-pituitary-thyroid axis affecting human and wildlife health. Thyroid hormones (TH) are crucial regulators of metabolism, growth, and differentiation. The perinatal stage is most reliant on TH, thus vulnerable to TH disrupting chemicals. Dysregulation of TH signaling during perinatal development can weaken T cell function in maturity, raising the question of whether TH disrupting chemicals can perturb thymocyte development. Using Xenopus laevis tadpoles as model, we determined TH disrupting effects and thymocyte alterations following exposure to a mixture of common waterborne TH disrupting chemicals at concentrations similar to those found in contaminated water. This mixture included naphthalene, ethylene glycol, ethoxylated nonylphenol, and octylphenol, which have documented TH disrupting activity. Besides hypertrophy-like pathology in the thyroid gland and delayed metamorphosis, exposure to the mixture antagonized TH receptor-induced transcription of the Krüppel-like factor 9 transcription factor and significantly raised thyroid-stimulating hormone gene expression in the brain, two genes that modulate thymocyte differentiation. Importantly, exposure to this mixture reduced the number of Xenopus immature cortical thymocyte-specific-antigen (CTX+) and mature CD8+ thymocytes, whereas co-exposure with exogenous TH (T3) abolished the effect. When each chemical of the mixture was individually tested, only ethylene glycol induced significant antagonist effects on brain, thymic gene expression, and CD8+ thymocytes. These results suggest that EDCs in mixture are more potent than each chemical alone to perturb thymocyte development through TH-dependent pathway, and provide a starting point to research TH influence on thymocyte development.
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Affiliation(s)
- Connor C McGuire
- Department of Microbiology & Immunology, University of Rochester Medical Center, Rochester, New York 1462.,Department of Environmental Medicine, University of Rochester Medical Center, Rochester, New York 1462
| | - B Paige Lawrence
- Department of Microbiology & Immunology, University of Rochester Medical Center, Rochester, New York 1462.,Department of Environmental Medicine, University of Rochester Medical Center, Rochester, New York 1462
| | - Jacques Robert
- Department of Microbiology & Immunology, University of Rochester Medical Center, Rochester, New York 1462.,Department of Environmental Medicine, University of Rochester Medical Center, Rochester, New York 1462
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20
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Developmental thyroid disruption causes long-term impacts on immune cell function and transcriptional responses to pathogen in a small fish model. Sci Rep 2021; 11:14496. [PMID: 34262125 PMCID: PMC8280131 DOI: 10.1038/s41598-021-93929-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 07/01/2021] [Indexed: 11/08/2022] Open
Abstract
Current evidence suggests thyroid hormones (THs) impact development of the immune system, but few studies have explored the connection between the thyroid and immune systems, especially in fish. This is important as some environmental contaminants disrupt TH homeostasis and may thus have negative impacts on the immune system. To determine the long-term consequences of early life stage (ELS) hypothyroidism on immune function, fathead minnows were exposed to the model thyroid hormone suppressant propylthiouracil (PTU) from < 1 to 30 days post hatch. Fish were transferred to clean water and raised to adulthood (5-7 months post hatch) at which time, several aspects of immune function were evaluated. Ex vivo assessment of immune cell function revealed significant decreases (1.2-fold) in the phagocytic cell activity of PTU-treated fish relative to the controls. Fish were also injected with Yersinia ruckeri to evaluate their in vivo immune responses across a suite of endpoints (i.e., transcriptomic analysis, leukocyte counts, spleen index, hematocrit, bacterial load and pathogen resistance). The transcriptomic response to infection was significantly different between control and PTU-treated fish, though no differences in bacterial load or pathogen resistance were noted. Overall, these results suggest that early life stage TH suppression causes long-term impacts on immune function at the molecular and cellular levels suggesting a key role for TH signaling in normal immune system development. This study lays the foundation for further exploration into thyroid-immune crosstalk in fish. This is noteworthy as disruption of the thyroid system during development, which can occur in response to chemicals present in the environment, may have lasting effects on immune function in adulthood.
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21
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Lafontaine N, Campbell PJ, Castillo-Fernandez JE, Mullin S, Lim EM, Kendrew P, Lewer M, Brown SJ, Huang RC, Melton PE, Mori TA, Beilin LJ, Dudbridge F, Spector TD, Wright MJ, Martin NG, McRae AF, Panicker V, Zhu G, Walsh JP, Bell JT, Wilson SG. Epigenome-Wide Association Study of Thyroid Function Traits Identifies Novel Associations of fT3 With KLF9 and DOT1L. J Clin Endocrinol Metab 2021; 106:e2191-e2202. [PMID: 33484127 PMCID: PMC8063248 DOI: 10.1210/clinem/dgaa975] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Indexed: 12/12/2022]
Abstract
CONTEXT Circulating concentrations of free triiodothyronine (fT3), free thyroxine (fT4), and thyrotropin (TSH) are partly heritable traits. Recent studies have advanced knowledge of their genetic architecture. Epigenetic modifications, such as DNA methylation (DNAm), may be important in pituitary-thyroid axis regulation and action, but data are limited. OBJECTIVE To identify novel associations between fT3, fT4, and TSH and differentially methylated positions (DMPs) in the genome in subjects from 2 Australian cohorts. METHOD We performed an epigenome-wide association study (EWAS) of thyroid function parameters and DNAm using participants from: Brisbane Systems Genetics Study (median age 14.2 years, n = 563) and the Raine Study (median age 17.0 years, n = 863). Plasma fT3, fT4, and TSH were measured by immunoassay. DNAm levels in blood were assessed using Illumina HumanMethylation450 BeadChip arrays. Analyses employed generalized linear mixed models to test association between DNAm and thyroid function parameters. Data from the 2 cohorts were meta-analyzed. RESULTS We identified 2 DMPs with epigenome-wide significant (P < 2.4E-7) associations with TSH and 6 with fT3, including cg00049440 in KLF9 (P = 2.88E-10) and cg04173586 in DOT1L (P = 2.09E-16), both genes known to be induced by fT3. All DMPs had a positive association between DNAm and TSH and a negative association between DNAm and fT3. There were no DMPs significantly associated with fT4. We identified 23 differentially methylated regions associated with fT3, fT4, or TSH. CONCLUSIONS This study has demonstrated associations between blood-based DNAm and both fT3 and TSH. This may provide insight into mechanisms underlying thyroid hormone action and/or pituitary-thyroid axis function.
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Affiliation(s)
- Nicole Lafontaine
- Department of Endocrinology & Diabetes, Sir Charles Gairdner Hospital, Nedlands, WA, Australia
- Medical School, University of Western Australia, Crawley, WA, Australia
- Correspondence: Nicole Lafontaine, MBBS, BMedSci, RACP, Department of Endocrinology & Diabetes, Level 1, Building C, QEII Medical Centre, Sir Charles Gairdner Hospital, Hospital Ave, Nedlands, WA 6009, Australia.
| | - Purdey J Campbell
- Department of Endocrinology & Diabetes, Sir Charles Gairdner Hospital, Nedlands, WA, Australia
| | | | - Shelby Mullin
- Department of Endocrinology & Diabetes, Sir Charles Gairdner Hospital, Nedlands, WA, Australia
| | - Ee Mun Lim
- Department of Endocrinology & Diabetes, Sir Charles Gairdner Hospital, Nedlands, WA, Australia
- Pathwest Laboratory Medicine, Nedlands, WA, Australia
| | | | | | - Suzanne J Brown
- Department of Endocrinology & Diabetes, Sir Charles Gairdner Hospital, Nedlands, WA, Australia
| | - Rae-Chi Huang
- Telethon Kids Institute, University of Western Australia, Perth, Australia
| | - Phillip E Melton
- School of Biomedical Sciences, University of Western Australia, Perth, Australia
- School of Pharmacy and Biomedical Sciences, Curtin University, Perth, Australia
- Menzies Institute for Medical Research, University of Tasmania, Hobart, Tasmania, Australia
| | - Trevor A Mori
- Medical School, Royal Perth Hospital Unit, University of Western Australia, Perth, WA, Australia
| | - Lawrence J Beilin
- Medical School, Royal Perth Hospital Unit, University of Western Australia, Perth, WA, Australia
| | - Frank Dudbridge
- Department of Health Sciences, University of Leicester, Leicester, UK
| | - Tim D Spector
- Department of Twin Research & Genetic Epidemiology, King’s College London, London, UK
| | - Margaret J Wright
- Queensland Brain Institute, University of Queensland, Brisbane, Australia
- Centre for Advanced Imaging, University of Queensland, Brisbane, Australia
| | | | - Allan F McRae
- Institute for Molecular Bioscience, University of Queensland, Brisbane, Australia
| | - Vijay Panicker
- Department of Endocrinology & Diabetes, Sir Charles Gairdner Hospital, Nedlands, WA, Australia
| | - Gu Zhu
- QIMR Berghofer Medical Research Institute, Brisbane, Australia
| | - John P Walsh
- Department of Endocrinology & Diabetes, Sir Charles Gairdner Hospital, Nedlands, WA, Australia
- Medical School, University of Western Australia, Crawley, WA, Australia
| | - Jordana T Bell
- Department of Twin Research & Genetic Epidemiology, King’s College London, London, UK
| | - Scott G Wilson
- Department of Endocrinology & Diabetes, Sir Charles Gairdner Hospital, Nedlands, WA, Australia
- Department of Twin Research & Genetic Epidemiology, King’s College London, London, UK
- School of Biomedical Sciences, University of Western Australia, Perth, Australia
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22
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Zhou G, Ai Y, Guo S, Chen Q, Feng X, Xu K, Wang G, Ma C. Association Between Red Blood Cell Distribution Width and Thyroid Function. Front Endocrinol (Lausanne) 2021; 12:807482. [PMID: 35116009 PMCID: PMC8805204 DOI: 10.3389/fendo.2021.807482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Accepted: 12/17/2021] [Indexed: 11/16/2022] Open
Abstract
AIM Red blood cell distribution width (RDW) is an important parameter with broad biological implications. However, the study investigating the association between RDW and thyroid function remains sparse and inconsistent. We aimed to investigate the association between RDW and thyroid function in the US population. METHODS A cross-sectional analysis was performed using the data from the National Health and Nutrition Examination Survey (NHANES) conducted from 2007 to 2010. The thyroid parameters investigated were mainly free triiodothyronine (fT3), free thyroxine (fT4), thyroid-stimulating hormone (TSH), antithyroglobulin antibody (TgAb), and antithyroperoxidase antibody (TPOAb). In the 6,895 adults aged 18 years or older, logistic regression modeling was applied to estimate the association between RDW quartiles and thyroid parameters. Smooth curve fittings and generalized additive models were then performed to address the nonlinear relationship. RESULTS The association between RDW and TSH followed a J-shaped curve, and a significant positive relationship existed in the 12.5%-17.5% range of RDW (β = 0.350, 95% confidence interval (CI): 0.225 to 0.474), which was prominent in females. We further demonstrated a negative association (β = -0.018, 95% CI: -0.030 to -0.005) between RDW and fT3. Moreover, elevated RDW was more likely to be subclinical hypothyroidism. However, there was no obvious association between RDW and fT4. CONCLUSION This study confirmed a significant association between RDW and TSH, and future studies are needed to elucidate the underlying mechanisms of the peculiar RDW-fT3 relationship. RDW may be a significant clinical marker of subclinical hypothyroidism.
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Affiliation(s)
- Guowei Zhou
- Department of General Surgery, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Yueqin Ai
- Department of Pneumology, Jinling Hospital, Nanjing, China
| | - Song Guo
- Department of General Surgery, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Quan Chen
- Department of General Surgery, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Xiao Feng
- Department of General Surgery, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Kun Xu
- Department of General Surgery, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Gaoyuan Wang
- Department of General Surgery, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
- *Correspondence: Gaoyuan Wang, ; Chaoqun Ma,
| | - Chaoqun Ma
- Department of General Surgery, Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
- *Correspondence: Gaoyuan Wang, ; Chaoqun Ma,
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23
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Wang Y, Zhang W, Li A, Song M. Tetrachlorobisphenol A induced immunosuppression and uterine injury in mice. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 207:111527. [PMID: 33254397 DOI: 10.1016/j.ecoenv.2020.111527] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 10/09/2020] [Accepted: 10/14/2020] [Indexed: 06/12/2023]
Abstract
Tetrachlorobisphenol A (TCBPA) is used as flame retardant, and it has been widely detected in the environmental and human samples. TCBPA is an endocrine disrupting chemical, but its effects on the immune system remains poorly understood. Here the effects of TCBPA on immune system were studied using combined in vivo and in vitro assays. Results showed that TCBPA could suppress the immune response in BALB/c mice via reducing the ratio of CD3+ T lymphocytes to regulatory T cells. Moreover, TCBPA exposure significantly induced the increasing secretion of four pro-inflammatory cytokines (IL-2, IL-12, IFN-γ, and TNF-α) and four anti-inflammatory cytokines (IL-4, IL-5, IL-10, GM-CSF) in mice serum. Interestingly, uterine edema was observed in over 80% TCBPA-treated mice after 14- day exposure. TCBPA was detected in 18.6% serum samples of 150 female volunteers in this study. Therefore, our findings provided evidence that TCBPA exposure may cause adverse outcomes on immune system and uterus, suggesting that environmental exposure of TCBPA, as well as its adverse effects on human health should be of concern.
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Affiliation(s)
- Yinan Wang
- Beijing Obstetrics and Gynecology Hospital, Capital Medical University, Beijing 100026, PR China
| | - Wenjuan Zhang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Science, Beijing 100085, PR China; Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Institute of Environment and Health, Jianghan University, Wuhan 430056, Hubei, PR China.
| | - Aijing Li
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Science, Beijing 100085, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China
| | - Maoyong Song
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Science, Beijing 100085, PR China; University of Chinese Academy of Sciences, Beijing 100049, PR China.
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24
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Broxmeyer HE, Liu Y, Kapur R, Orschell CM, Aljoufi A, Ropa JP, Trinh T, Burns S, Capitano ML. Fate of Hematopoiesis During Aging. What Do We Really Know, and What are its Implications? Stem Cell Rev Rep 2020; 16:1020-1048. [PMID: 33145673 PMCID: PMC7609374 DOI: 10.1007/s12015-020-10065-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/19/2020] [Indexed: 12/11/2022]
Abstract
There is an ongoing shift in demographics such that older persons will outnumber young persons in the coming years, and with it age-associated tissue attrition and increased diseases and disorders. There has been increased information on the association of the aging process with dysregulation of hematopoietic stem (HSC) and progenitor (HPC) cells, and hematopoiesis. This review provides an extensive up-to date summary on the literature of aged hematopoiesis and HSCs placed in context of potential artifacts of the collection and processing procedure, that may not be totally representative of the status of HSCs in their in vivo bone marrow microenvironment, and what the implications of this are for understanding aged hematopoiesis. This review covers a number of interactive areas, many of which have not been adequately explored. There are still many unknowns and mechanistic insights to be elucidated to better understand effects of aging on the hematopoietic system, efforts that will take multidisciplinary approaches, and that could lead to means to ameliorate at least some of the dysregulation of HSCs and HPCs associated with the aging process. Graphical Abstract.
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Affiliation(s)
- Hal E Broxmeyer
- Department of Microbiology and Immunology, Indiana University School of Medicine, 950 West Walnut Street, R2-302, Indianapolis, IN, 46202-5181, USA.
| | - Yan Liu
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Reuben Kapur
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Christie M Orschell
- Department of Medicine, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Arafat Aljoufi
- Department of Microbiology and Immunology, Indiana University School of Medicine, 950 West Walnut Street, R2-302, Indianapolis, IN, 46202-5181, USA
| | - James P Ropa
- Department of Microbiology and Immunology, Indiana University School of Medicine, 950 West Walnut Street, R2-302, Indianapolis, IN, 46202-5181, USA
| | - Thao Trinh
- Department of Microbiology and Immunology, Indiana University School of Medicine, 950 West Walnut Street, R2-302, Indianapolis, IN, 46202-5181, USA
| | - Sarah Burns
- Department of Pediatrics, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Maegan L Capitano
- Department of Microbiology and Immunology, Indiana University School of Medicine, 950 West Walnut Street, R2-302, Indianapolis, IN, 46202-5181, USA.
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25
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Pang S, Gao Y, Li A, Yao X, Qu G, Hu L, Liang Y, Song M, Jiang G. Tetrabromobisphenol A Perturbs Erythropoiesis and Impairs Blood Circulation in Zebrafish Embryos. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:12998-13007. [PMID: 32841016 DOI: 10.1021/acs.est.0c02934] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Tetrabromobisphenol A (TBBPA), a ubiquitous environmental pollutant, has been implicated in developmental toxicity of aquatic animals. However, the impact of TBBPA on development and the related mechanism have not been fully elucidated. In this study, using a live imaging technique and transgenic labeling of zebrafish embryos, we described the toxic effects of TBBPA on hematopoietic development in zebrafish. We demonstrated that TBBPA induced erythroid precursor expansion in the intermediate cell mass (ICM), which perturbed the onset of blood circulation at 24-26 hours postfertilization (hpf). Consequently, excessive blood cells accumulated in the posterior blood island (PBI) and vascular cells formed defective caudal veins (CVs), preventing blood cell flow to the heart at 32-34 hpf. We found that the one-cell to 50% epiboly stage was the most sensitive period to TBBPA exposure during hematopoietic development. Furthermore, our results demonstrated that PBI malformation induced by TBBPA resulted from effects on erythroid precursor cells, which might involve THR signaling in complex ways. These findings will improve the understanding of TBBPA-induced developmental toxicity in teleost.
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Affiliation(s)
- Shaochen Pang
- Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Jianghan University, Wuhan 430056, China
- Institute of Environment and Health, Jianghan University, Wuhan 430056, China
| | - Yue Gao
- Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Aijing Li
- Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xinglei Yao
- Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guangbo Qu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Jianghan University, Wuhan 430056, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ligang Hu
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Jianghan University, Wuhan 430056, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yong Liang
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Jianghan University, Wuhan 430056, China
- Institute of Environment and Health, Jianghan University, Wuhan 430056, China
| | - Maoyong Song
- Key Laboratory of Environmental Nanotechnology and Health Effects, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Jianghan University, Wuhan 430056, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Guibin Jiang
- State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
- Hubei Key Laboratory of Environmental and Health Effects of Persistent Toxic Substances, Jianghan University, Wuhan 430056, China
- University of Chinese Academy of Sciences, Beijing 100049, China
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26
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Winzeler B, Morin B, Refardt J, Imber C, Fenske W, Sailer CO, Holbro A, Christ-Crain M. Low arginine vasopressin levels in patients with diabetes insipidus are not associated with anaemia. Clin Endocrinol (Oxf) 2020; 93:456-465. [PMID: 32534481 DOI: 10.1111/cen.14265] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/05/2020] [Revised: 05/16/2020] [Accepted: 06/02/2020] [Indexed: 11/30/2022]
Abstract
OBJECTIVE Arginine vasopressin (AVP) is released upon osmotic stimulation or hypovolaemia in order to maintain water balance. A recent study showed a role of AVP in haematopoiesis by stimulating red blood cell precursors, suggesting a higher risk of anaemia in patients with AVP deficiency. The objective was to explore the effect of low AVP levels in patients with central diabetes insipidus (cDI) and primary polydipsia (PP) on haemoglobin and the prevalence of anaemia. METHODS A total of 164 patients with either cDI (70, 43%) or PP (94, 57%) and 30 healthy volunteers from two prospective diagnostic studies performed in Switzerland, Germany and Brazil were studied. A standardized clinical and biochemical (eg copeptin, full blood count) assessment was performed. Haemoglobin and haematocrit levels and prevalence of anaemia (defined as haemoglobin values of <120 g/L in women and <130 g/L in men) were analysed. RESULTS Mean copeptin values were 2.63 pmol/L (±1.08) and 3.91 pmol/L (±4.28) in patients with cDI and PP and 24.76 pmol/L (±5.75) in healthy volunteers, P = .02. The prevalence of anaemia was low in all participants with 7.1%, 2.2% and 10% in cDI, PP and in healthy volunteers, P = .15. Mean haemoglobin values were similar in all groups: 139 g/L (±15.85), 140 g/L (±13.16) and 139 g/L (±13.05) in patients with cDI, PP and healthy volunteers, P = .90, as were mean haematocrit values with 41% in all groups (P = .85). CONCLUSION Chronic low AVP levels in patients with cDI and PP do not affect haemoglobin levels and prevalence of anaemia.
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Affiliation(s)
- Bettina Winzeler
- Department of Endocrinology, Diabetology and Metabolism, University Hospital Basel, Switzerland
- Department of Clinical Research, University Hospital Basel and University of Basel, Switzerland
| | - Benedict Morin
- Department of Endocrinology, Diabetology and Metabolism, University Hospital Basel, Switzerland
- Department of Clinical Research, University Hospital Basel and University of Basel, Switzerland
| | - Julie Refardt
- Department of Endocrinology, Diabetology and Metabolism, University Hospital Basel, Switzerland
- Department of Clinical Research, University Hospital Basel and University of Basel, Switzerland
| | - Cornelia Imber
- Department of Endocrinology, Diabetology and Metabolism, University Hospital Basel, Switzerland
- Department of Clinical Research, University Hospital Basel and University of Basel, Switzerland
| | - Wiebke Fenske
- Department of Endocrinology and Nephrology, University of Leipzig, Leipzig, Germany
- Leipzig University Medical Centre, IFB Adiposity Diseases, Leipzig, Germany
| | - Clara O Sailer
- Department of Endocrinology, Diabetology and Metabolism, University Hospital Basel, Switzerland
- Department of Clinical Research, University Hospital Basel and University of Basel, Switzerland
| | - Andreas Holbro
- Department of Haematology, University Hospital Basel, Switzerland
| | - Mirjam Christ-Crain
- Department of Endocrinology, Diabetology and Metabolism, University Hospital Basel, Switzerland
- Department of Clinical Research, University Hospital Basel and University of Basel, Switzerland
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27
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Wang X, Cao C, Li Y, Hai T, Jia Q, Zhang Y, Zheng Q, Yao J, Qin G, Zhang H, Song R, Wang Y, Shui G, Lam SM, Liu Z, Wei H, Meng A, Zhou Q, Zhao J. A harlequin ichthyosis pig model with a novel ABCA12 mutation can be rescued by acitretin treatment. J Mol Cell Biol 2020; 11:1029-1041. [PMID: 30925591 PMCID: PMC6934153 DOI: 10.1093/jmcb/mjz021] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 02/20/2019] [Accepted: 03/08/2019] [Indexed: 11/20/2022] Open
Abstract
Harlequin ichthyosis (HI) is a severe genetic skin disorder and caused by mutation in the ATP-binding cassette A12 (ABCA12) gene. The retinoid administration has dramatically improved long-term survival of HI, but improvements are still needed. However, the ABCA12 null mice failed to respond to retinoid treatment, which impedes the development of novel cure strategies for HI. Here we generated an ethylnitrosourea mutagenic HI pig model (named Z9), which carries a novel deep intronic mutation IVS49-727 A>G in the ABCA12 gene, resulting in abnormal mRNA splicing and truncated protein production. Z9 pigs exhibit significant clinical symptom as human patients with HI. Most importantly, systemic retinoid treatment significantly prolonged the life span of the mutant pigs via improving epidermal maturation, decreasing epidermal apoptosis, and triggering the expression of ABCA6. Taken together, this pig model perfectly resembles the clinical symptom and molecular pathology of patients with HI and will be useful for understanding mechanistic insight and developing therapeutic strategies.
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Affiliation(s)
- Xiao Wang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.,University of Chinese Academy of Sciences, Beijing 100049, China.,Chinese Swine Mutagenesis Consortium, Beijing 100101, China
| | - Chunwei Cao
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.,Chinese Swine Mutagenesis Consortium, Beijing 100101, China
| | - Yongshun Li
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.,Chinese Swine Mutagenesis Consortium, Beijing 100101, China
| | - Tang Hai
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.,Chinese Swine Mutagenesis Consortium, Beijing 100101, China
| | - Qitao Jia
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.,University of Chinese Academy of Sciences, Beijing 100049, China.,Chinese Swine Mutagenesis Consortium, Beijing 100101, China
| | - Ying Zhang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.,University of Chinese Academy of Sciences, Beijing 100049, China.,Chinese Swine Mutagenesis Consortium, Beijing 100101, China
| | - Qiantao Zheng
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.,University of Chinese Academy of Sciences, Beijing 100049, China.,Chinese Swine Mutagenesis Consortium, Beijing 100101, China
| | - Jing Yao
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.,Chinese Swine Mutagenesis Consortium, Beijing 100101, China
| | - Guosong Qin
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.,Chinese Swine Mutagenesis Consortium, Beijing 100101, China
| | - Hongyong Zhang
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.,University of Chinese Academy of Sciences, Beijing 100049, China.,Chinese Swine Mutagenesis Consortium, Beijing 100101, China
| | - Ruigao Song
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.,University of Chinese Academy of Sciences, Beijing 100049, China.,Chinese Swine Mutagenesis Consortium, Beijing 100101, China
| | - Yanfang Wang
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing 100081, China
| | - Guanghou Shui
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Sin Man Lam
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing 100101, China
| | - Zhonghua Liu
- College of Life Science, Northeast Agricultural University of China, Harbin 150030, China.,Chinese Swine Mutagenesis Consortium, Beijing 100101, China
| | - Hong Wei
- Department of Laboratory Animal Science, College of Basic Medical Sciences, Third Military Medical University, Chongqing 400038, China.,Chinese Swine Mutagenesis Consortium, Beijing 100101, China
| | - Anming Meng
- School of Life Sciences, Tsinghua University, Beijing 100084, China.,Chinese Swine Mutagenesis Consortium, Beijing 100101, China
| | - Qi Zhou
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.,University of Chinese Academy of Sciences, Beijing 100049, China.,Chinese Swine Mutagenesis Consortium, Beijing 100101, China
| | - Jianguo Zhao
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing 100101, China.,University of Chinese Academy of Sciences, Beijing 100049, China.,Chinese Swine Mutagenesis Consortium, Beijing 100101, China
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28
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Gu Y, Chi VTQ, Zhang Q, Liu L, Meng G, Wu H, Bao X, Zhang S, Sun S, Wang X, Zhou M, Jia Q, Song K, Niu K. Low-Normal Thyroid Function Predicts Incident Anemia in the General Population With Euthyroid Status. J Clin Endocrinol Metab 2019; 104:5693-5702. [PMID: 31361306 DOI: 10.1210/jc.2019-00888] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2019] [Accepted: 07/18/2019] [Indexed: 01/01/2023]
Abstract
CONTEXT Thyroid hormones (THs) have direct and indirect effects on hematopoiesis. However, few studies have directly evaluated the effect of THs on incident anemia among euthyroid subjects. This cohort study aimed to explore whether THs under physiological conditions can affect the development of anemia in the general population. DESIGN A total of 12,310 participants were enrolled in the cohort study (∼5-year follow-up period; mean, 3.1 years). A chemiluminescence immunoassay was used to measure free T3 (FT3), free T4 (FT4), and TSH, and anemia was defined according to the World Health Organization recommendation. THs, TSH, and Hb were assessed yearly during follow-up. Multivariable Cox proportional hazards regression models were used to assess the association between THs, TSH, and incident anemia. RESULTS The fully adjusted hazards ratios (95% CI) of anemia per 1-unit change in FT3, FT4, and TSH concentrations were 0.70 (0.56, 0.87), 0.93 (0.88, 0.98), and 1.19 (0.94, 1.50) (P < 0.01, P < 0.01, and P = 0.14, respectively). Moreover, a significant and positive association between FT3, FT4, and annual changes in Hb (standard regression coefficients of 0.056 and 0.028, respectively; both P < 0.01) was observed. Similar associations were observed when the participants who had thyroid dysfunction upon follow-up were excluded. CONCLUSIONS The current study demonstrated that THs significantly predict future anemia and annual changes in Hb, even in the euthyroid population.
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Affiliation(s)
- Yeqing Gu
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin, China
| | - Vu Thi Quynh Chi
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin, China
| | - Qing Zhang
- Health Management Center, Tianjin Medical University General Hospital, Tianjin, China
| | - Li Liu
- Health Management Center, Tianjin Medical University General Hospital, Tianjin, China
| | - Ge Meng
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin, China
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Tianjin Medical University, Tianjin, China
| | - Hongmei Wu
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin, China
| | - Xue Bao
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin, China
| | - Shunming Zhang
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin, China
| | - Shaomei Sun
- Health Management Center, Tianjin Medical University General Hospital, Tianjin, China
| | - Xing Wang
- Health Management Center, Tianjin Medical University General Hospital, Tianjin, China
| | - Ming Zhou
- Health Management Center, Tianjin Medical University General Hospital, Tianjin, China
| | - Qiyu Jia
- Health Management Center, Tianjin Medical University General Hospital, Tianjin, China
| | - Kun Song
- Health Management Center, Tianjin Medical University General Hospital, Tianjin, China
| | - Kaijun Niu
- Nutritional Epidemiology Institute and School of Public Health, Tianjin Medical University, Tianjin, China
- Health Management Center, Tianjin Medical University General Hospital, Tianjin, China
- Tianjin Key Laboratory of Environment, Nutrition and Public Health, Tianjin, China
- Center for International Collaborative Research on Environment, Nutrition and Public Health, Tianjin, China
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O'Shaughnessy KL, Wood CR, Ford RL, Kosian PA, Hotchkiss MG, Degitz SJ, Gilbert ME. Thyroid Hormone Disruption in the Fetal and Neonatal Rat: Predictive Hormone Measures and Bioindicators of Hormone Action in the Developing Cortex. Toxicol Sci 2019; 166:163-179. [PMID: 30085217 DOI: 10.1093/toxsci/kfy190] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Adverse neurodevelopmental consequences remain a primary concern when evaluating the effects of thyroid hormone (TH) disrupting chemicals. Though the developing brain is a known target of TH insufficiency, the relationship between THs in the serum and the central nervous system is not well characterized. To address this issue, dose response experiments were performed in pregnant rats using the goitrogen propylthiouracil (PTU) (dose range 0.1-10 ppm). THs were quantified in the serum and brain of offspring at gestational day 20 (GD20) and postnatal day 14 (PN14), two developmental stages included in OECD and EPA regulatory guideline/guidance studies. From the dose response data, the quantitative relationships between THs in the serum and brain were determined. Next, targeted gene expression analyses were performed in the fetal and neonatal cortex to test the hypothesis that TH action in the developing brain is linked to changes in TH concentrations within the tissue. Results show a significant reduction of T4/T3 in the serum and brain of the GD20 fetus in response to low doses of PTU; interestingly, very few genes were significantly different at any dose tested. In the PN14 pup significant reductions of T4/T3 in the serum and brain were also detected; however, twelve transcriptional targets were identified in the neonatal cortex that correlated well with reduced brain THs. These results show that serum T4 is a good predictor of brain THs, and offer several target genes that could serve as pragmatic readouts of T4/T3 dysfunction within the PN14 cortex.
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Affiliation(s)
- Katherine L O'Shaughnessy
- Toxicity Assessment Division, National Health and Environmental Effects Research Laboratory, US Environmental Protection Agency, Research Triangle Park, North Carolina 27711.,Oak Ridge Institute for Science Education, Oak Ridge, Tennesse 37830
| | - Carmen R Wood
- Toxicity Assessment Division, National Health and Environmental Effects Research Laboratory, US Environmental Protection Agency, Research Triangle Park, North Carolina 27711
| | - Richard L Ford
- Toxicity Assessment Division, National Health and Environmental Effects Research Laboratory, US Environmental Protection Agency, Research Triangle Park, North Carolina 27711.,Oak Ridge Institute for Science Education, Oak Ridge, Tennesse 37830
| | - Patricia A Kosian
- Mid-Continent Ecology Division, National Health and Environmental Effects Research Laboratory, US Environmental Protection Agency, Duluth, Minnesota 55804
| | - Michelle G Hotchkiss
- Toxicity Assessment Division, National Health and Environmental Effects Research Laboratory, US Environmental Protection Agency, Research Triangle Park, North Carolina 27711
| | - Sigmund J Degitz
- Mid-Continent Ecology Division, National Health and Environmental Effects Research Laboratory, US Environmental Protection Agency, Duluth, Minnesota 55804
| | - Mary E Gilbert
- Toxicity Assessment Division, National Health and Environmental Effects Research Laboratory, US Environmental Protection Agency, Research Triangle Park, North Carolina 27711
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Huberty J, Eckert R, Dueck A, Kosiorek H, Larkey L, Gowin K, Mesa R. Online yoga in myeloproliferative neoplasm patients: results of a randomized pilot trial to inform future research. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2019; 19:121. [PMID: 31174535 PMCID: PMC6556039 DOI: 10.1186/s12906-019-2530-8] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 05/29/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND Myeloproliferative neoplasm (MPN) patients suffer from significant symptoms, inflammation and reduced quality of life. Yoga improves these outcomes in other cancers, but this hasn't been demonstrated in MPNs. The purpose of this study was to: (1) explore the limited efficacy (does the program show promise of success) of a 12-week online yoga intervention among MPN patients on symptom burden and quality of life and (2) determine feasibility (practicality: to what extent a measure can be carried out) of remotely collecting inflammatory biomarkers. METHODS Patients were recruited nationally and randomized to online yoga (60 min/week of yoga) or wait-list control (asked to maintain normal activity). Weekly yoga minutes were collected with Clicky (online web analytics tool) and self-report. Those in online yoga completed a blood draw at baseline and week 12 to assess inflammation (interleukin-6, tumor necrosis factor-alpha [TNF-α]). All participants completed questionnaires assessing depression, anxiety, fatigue, pain, sleep disturbance, sexual function, total symptom burden, global health, and quality of life at baseline, week seven, 12, and 16. Change from baseline at each time point was computed by group and effect sizes were calculated. Pre-post intervention change in inflammation for the yoga group was compared by t-test. RESULTS Sixty-two MPN patients enrolled and 48 completed the intervention (online yoga = 27; control group = 21). Yoga participation averaged 40.8 min/week via Clicky and 56.1 min/week via self-report. Small/moderate effect sizes were generated from the yoga intervention for sleep disturbance (d = - 0.26 to - 0.61), pain intensity (d = - 0.34 to - 0.51), anxiety (d = - 0.27 to - 0.37), and depression (d = - 0.53 to - 0.78). A total of 92.6 and 70.4% of online yoga participants completed the blood draw at baseline and week 12, respectively, and there was a decrease in TNF-α from baseline to week 12 (- 1.3 ± 1.5 pg/ml). CONCLUSIONS Online yoga demonstrated small effects on sleep, pain, and anxiety as well as a moderate effect on depression. Remote blood draw procedures are feasible and the effect size of the intervention on TNF-α was large. Future fully powered randomized controlled trials are needed to test for efficacy. TRIAL REGISTRATION This trial was retrospectively registered with clinicaltrials.gov (ID: NCT03503838 ) on 4/19/2018.
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Affiliation(s)
- Jennifer Huberty
- Exercise Science and Health Promotion, Arizona State University, 500 North 3rd Street Phoenix, Tempe, AZ 85004 USA
| | - Ryan Eckert
- Mays Cancer Center, University of Texas San Antonio MD Anderson, 7979 Wurzbach Road, San Antonio, TX 78229 USA
| | - Amylou Dueck
- Division of Biostatistics, Mayo Clinic, 13400 East Shea Boulevard, Scottsdale, AZ 85259 USA
| | - Heidi Kosiorek
- Division of Biostatistics, Mayo Clinic, 13400 East Shea Boulevard, Scottsdale, AZ 85259 USA
| | - Linda Larkey
- College of Nursing and Health Innovation, Arizona State University, 550 North 3rd Street, Phoenix, AZ 85004 USA
| | - Krisstina Gowin
- University of Arizona, 1501 North Campbell Avenue, Tucson, AZ 85724 USA
| | - Ruben Mesa
- Mays Cancer Center, University of Texas San Antonio MD Anderson, 7979 Wurzbach Road, San Antonio, TX 78229 USA
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Yang W, Sheng F. Factors associated with thyroid dysfunction in children with newly diagnosed type 1 diabetes mellitus. Minerva Pediatr (Torino) 2019; 73:324-329. [PMID: 31129953 DOI: 10.23736/s2724-5276.19.05484-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND This study aimed to investigate the possible factors associated with thyroid dysfunction (TD) in children with type 1 diabetes mellitus (T1DM). METHODS Eighty-seven children with T1DM were evaluated in terms of their clinical profile as well as tested for pancreatic and thyroid antibodies. Thyroid function was tested at baseline and 10 days after treatment onset. RESULTS Thyroid dysfunction was present in 13 (14.9%) patients after correction of acute metabolic disorders. The prevalence of subclinical hypothyroidism (10.3%) was found to be higher than that of clinical hypothyroidism (3.4%) and clinical hyperthyroidism (1.2%). Both pancreatic and thyroid antibody were detected positive in TD patients, which was significantly different from that with euthyroidism (P<0.01, P<0.05). The frequency of TD family history was significantly higher in subjects with TD rather than with euthyroidism (P<0.01). The levels of free and total triiodothyronine, free and total thyroxine were in the hypothyroid range at the time of admission, all of which increased to normal range after 10 days of therapy in 32 DKA children (P=0.02 and P<0.01). There was a significant correlation between pH and free triiodothyronine levels (P<0.05). CONCLUSIONS TD is related to family factors, autoimmunity, and acute metabolic stress in the T1DM and regular thyroid screening should be performed.
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Affiliation(s)
- Weixia Yang
- Department of Pediatrics, Affiliated Hospital of Nantong University, Nantong, China -
| | - Feifei Sheng
- Department of Pediatrics, Affiliated Hospital of Nantong University, Nantong, China
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Mang N, Vizitiu AC, Anghel A. Changes in the peripheral blood cell count in pediatric patients with Down syndrome. J Int Med Res 2019; 47:3757-3762. [PMID: 31130047 PMCID: PMC6726775 DOI: 10.1177/0300060519850397] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Objectives Down syndrome (DS) is associated with multiple complications, including a high risk of leukemia and thyroid dysfunction. This clinical study aimed to examine the complete blood cell count in patients with DS without leukemia or transient abnormal myelopoiesis. We also aimed to evaluate the effect of thyroid dysfunction on hematological anomalies in DS. Methods We analyzed the peripheral blood cell count in 23 pediatric patients with DS with and without thyroid dysfunction and in 17 pediatric patients without DS with thyroid dysfunction. Results Patients with DS showed greater neutrophilia and lymphopenia than did patients with DS and hypothyroidism and patients with hypothyroidism. Surprisingly, patients with DS showed a significant degree of eosinopenia in the peripheral blood. Interestingly, hypothyroidism had an attenuating effect on different lineages in the complete blood count. However, these anomalies were specific for DS. Conclusions Our clinical findings support previous data on DS-associated changes in the complete blood count. Our study also shows novel alterations in the complete blood count in leukemia-free patients with DS in association with hypothyroidism. The attenuating effect of thyroid dysfunction on changes in different lineages in the context of DS is novel and deserves further analysis in larger studies.
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Affiliation(s)
- Niculina Mang
- 1 Department of Pediatrics, "Victor Babes" University of Medicine and Pharmacy, Timisoara, Romania
| | - Anda C Vizitiu
- 2 Doctoral School, "Victor Babes" University of Medicine and Pharmacy Timisoara, Timisoara, Romania
| | - Andrei Anghel
- 3 Department of Biochemistry, "Victor Babes" University of Medicine and Pharmacy, Timisoara, Romania
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Miss Piggy on the catwalk again. Blood 2017; 130:2153-2154. [DOI: 10.1182/blood-2017-10-809640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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