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Molecular Research on Thyroid Hormone and Thyroid Hormone-Related Compounds

A special issue of International Journal of Molecular Sciences (ISSN 1422-0067). This special issue belongs to the section "Molecular Endocrinology and Metabolism".

Deadline for manuscript submissions: closed (31 July 2023) | Viewed by 9082

Special Issue Editors


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Guest Editor
Department of Neuroscience, Psychology, Drug Sciences and Child Health, University of Firenze, 50139 Firenze, Italy
Interests: thyroid hormone metabolites; endopharmacology; diabetes; histamine
Special Issues, Collections and Topics in MDPI journals

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Guest Editor
Department of Molecular and Developmental Medicine, Molecular Medicine Section, University of Siena, 53100 Siena, Italy
Interests: thyroid; neuroscience; skeletal muscle
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Homeostatic thyroid secretion is one of the conditions required to maintain healthy and functional thyroid hormone (TH) target tissues. TH exerts control on the growth, metabolism, differentiation, and survival of most mammalian cells. Thyroid diseases are risk factors for aberrant cell functions and a pathogenic ground for several chronic and degenerative diseases. TH-related effects derive from the activation of pathways dependent on or independent of TH receptor activation.

Recent evidence suggests TH metabolism may generate compounds endowed with biological activities. These compounds belong to three families, i.e., tyronines, thyronamines, and thyroacetic or thyropropionic acids, and occur endogenously, potentially produced in thyroid target tissues and possibly participating in TH effects, though their physiopathological meaning is not clear.

The aim of this Special Issue is to collect articles and reviews describing the biochemical and molecular aspects of TH, the physiopharmacological activities of TH metabolites, and the relationship between TH and TH metabolites in healthy and pathological conditions.

Prof. Dr. Laura Raimondi
Dr. Annunziatina Laurino
Guest Editors

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Keywords

  • cell signaling
  • hormone metabolism
  • neuromodulation
  • degenerative diseases
  • hormone targets

Published Papers (4 papers)

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Research

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14 pages, 3244 KiB  
Article
Unexpected Crosslinking Effects of a Human Thyroid Stimulating Monoclonal Autoantibody, M22, with IGF1 on Adipogenesis in 3T3L-1 Cells
by Araya Umetsu, Tatsuya Sato, Megumi Watanabe, Yosuke Ida, Masato Furuhashi, Yuri Tsugeno and Hiroshi Ohguro
Int. J. Mol. Sci. 2023, 24(2), 1110; https://doi.org/10.3390/ijms24021110 - 6 Jan 2023
Cited by 1 | Viewed by 1587
Abstract
To study the effects of the crosslinking of IGF1 and/or the human thyroid-stimulating monoclonal autoantibody (TSmAb), M22 on mouse adipocytes, two- and three-dimensional (2D or 3D) cultures of 3T3-L1 cells were prepared. Each sample was then subjected to the following analyses: (1) lipid [...] Read more.
To study the effects of the crosslinking of IGF1 and/or the human thyroid-stimulating monoclonal autoantibody (TSmAb), M22 on mouse adipocytes, two- and three-dimensional (2D or 3D) cultures of 3T3-L1 cells were prepared. Each sample was then subjected to the following analyses: (1) lipid staining, (2) a real-time cellular metabolic analysis, (3) analysis of the mRNA expression of adipogenesis-related genes and extracellular matrix (ECM) molecules including collagen (Col) 1, 4 and 6, and fibronectin (Fn), and (4) measurement of the size and physical properties of the 3D spheroids with a micro-squeezer. Upon adipogenic differentiation (DIF+), lipid staining and the mRNA expression of adipogenesis-related genes in the 2D- or 3D-cultured 3T3-L1 cells substantially increased. On adding IGF1 but not M22 to DIF+ cells, a significant enhancement in lipid staining and gene expressions of adipogenesis-related genes was detected in the 2D-cultured 3T3-L1 cells, although some simultaneous suppression or enhancement effects by IGF1 and M22 against lipid staining or Fabp4 expression, respectively, were detected in the 3D 3T3-L1 spheroids. Real-time metabolic analyses indicated that monotherapy with IGF1 or M22 shifted cellular metabolism toward energetic states in the 2D 3T3-L1 cells upon DIF+, although no significant metabolic changes were induced by DIF+ alone in 2D cultures. In addition, some synergistical effects on cellular metabolism by IGF1 and M22 were also observed in the 2D 3T3-L1 cells as well as in cultured non-Graves’ orbitopathy-related human orbital fibroblasts (n-HOFs), but not in Graves’ orbitopathy-related HOFs (GHOFs). In terms of the physical properties of the 3D 3T3-L1 spheroids, (1) their sizes significantly increased upon DIF+, and this increase was significantly enhanced by the presence of both IGF1 and M22 despite downsizing by monotreatment, and (2) their stiffness increased substantially, and no significant effects by IGF-1 and/or M22 were observed. Regarding the expression of ECM molecules, (1) upon DIF+, significant downregulation or upregulation of Col1 and Fn (3D), or Col4 and 6 (2D and 3D) were observed, and (2) in the presence of IGF-1 and/or M22, the mRNA expression of Col4 was significantly downregulated by M22 (2D and 3D), but the expression of Col1 was modulated in different manners by monotreatment (upregulation) or the combined treatment (downregulation) (3D). These collective data suggest that the human-specific TSmAb M22 induced some unexpected simultaneous crosslinking effects with IGF-1 with respect to the adipogenesis of 2D-cultured 3T3-L1 cells and the physical properties of 3D 3T3-L1 spheroids. Full article
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13 pages, 2348 KiB  
Article
An Atlas of Thyroid Hormone Receptors’ Target Genes in Mouse Tissues
by Yanis Zekri, Romain Guyot and Frédéric Flamant
Int. J. Mol. Sci. 2022, 23(19), 11444; https://doi.org/10.3390/ijms231911444 - 28 Sep 2022
Cited by 15 | Viewed by 2445
Abstract
We gathered available RNA-seq and ChIP-seq data in a single database to better characterize the target genes of thyroid hormone receptors in several cell types. This database can serve as a resource to analyze the mode of action of thyroid hormone (T3). Additionally, [...] Read more.
We gathered available RNA-seq and ChIP-seq data in a single database to better characterize the target genes of thyroid hormone receptors in several cell types. This database can serve as a resource to analyze the mode of action of thyroid hormone (T3). Additionally, it is an easy-to-use and convenient tool to obtain information on specific genes regarding T3 regulation or to extract large gene lists of interest according to the users’ criteria. Overall, this atlas is a unique compilation of recent sequencing data focusing on T3, its receptors, modes of action, targets and roles, which may benefit researchers within the field. A preliminary analysis indicates extensive variations in the repertoire of target genes where transcription is upregulated by chromatin-bound nuclear receptors. Although it has a major influence, chromatin accessibility is not the only parameter that determines the cellular selectivity of the hormonal response. Full article
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Review

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18 pages, 1938 KiB  
Review
Pars Distalis and Pars Tuberalis Thyroid-Stimulating Hormones and Their Roles in Macro-Thyroid-Stimulating Hormone Formation
by Eleonore Fröhlich and Richard Wahl
Int. J. Mol. Sci. 2023, 24(14), 11699; https://doi.org/10.3390/ijms241411699 - 20 Jul 2023
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Abstract
Thyroid-stimulating hormone (TSH) and thyroid hormone levels are standard parameters in blood analysis. However, the immunoassays employed may lead to false-positive or false-negative results when the sample contains certain materials that interfere with the assay. Macro-TSH, a complex of TSH with immunoglobulin or [...] Read more.
Thyroid-stimulating hormone (TSH) and thyroid hormone levels are standard parameters in blood analysis. However, the immunoassays employed may lead to false-positive or false-negative results when the sample contains certain materials that interfere with the assay. Macro-TSH, a complex of TSH with immunoglobulin or albumin, may cause apparently increased TSH concentrations. TSH is produced in the pars tuberalis (PT) of the pituitary gland and by thyrotrophs of the pars distalis (PD). It was found that variable glycosylation can render the molecule more strongly bound to antibodies or albumin in the blood, leading to the hypothesis that macro-TSH consists mainly of PT-TSH. Although less known than PD-TSH, PT-TSH plays an important role in the central regulation of thyroid metabolism. The present review summarizes the physiological function of human PT-TSH and its role in macro-TSH formation. The prevalence of macro-hyperthyrotropinemia, the structure of PT-TSH and macro-TSH, problems in the measurement of TSH, and the action of PT-TSH in animals with seasonal breeding are discussed. Despite the absence of a specific function of macro-TSH in the organism, the identification of macro-TSH is important for avoiding unnecessary treatment based on a falsified readout of increased TSH concentrations as numerous individual case reports describe. Full article
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9 pages, 451 KiB  
Case Report
Resistance to Thyroid Hormones: A Case-Series Study
by Rossella Cannarella, Marco Musmeci, Vincenzo Garofalo, Tiziana A. Timpanaro, Guido Leone, Manuela Caruso, Paolo E. Maltese, Rosita A. Condorelli, Sandro La Vignera and Aldo E. Calogero
Int. J. Mol. Sci. 2022, 23(19), 11268; https://doi.org/10.3390/ijms231911268 - 24 Sep 2022
Cited by 3 | Viewed by 2052
Abstract
The aim of the study is to describe the clinical features of two unrelated patients with resistance to thyroid hormones (RTH), the first, a total thyroidectomized patient, and the second, a pregnant woman. We report the features found in her newborn who also [...] Read more.
The aim of the study is to describe the clinical features of two unrelated patients with resistance to thyroid hormones (RTH), the first, a total thyroidectomized patient, and the second, a pregnant woman. We report the features found in her newborn who also showed RTH. Patient 1 is a 38-year-old man with total thyroidectomy managed for excessive thyroid stimulating hormone (TSH) production, which poorly responded to the replacement therapy. He was found with a THRβ c.1378G>A p.(Glu460Lys) heterozygous mutation, which was also present in other members of his family (son, brother, and father). Interestingly, Patient 1 had hypertension, dyslipidemia, and hepatic steatosis, which have been recently suggested as RTH-related comorbidities. Patient 2 is a 32-year-old pregnant woman with multinodular goiter, and the THRβ heterozygous variant c.959G>C, that, to the best of our knowledge, has been reported in literature only once. Her newborn had tachycardia and increased thyroid hormone levels, and showed the same mutation. After delivery, high parathyroid hormone (PTH) and calcium serum levels were found in Patient 2 and the scintigraphy showed the presence of adenoma of a parathyroid gland. This case-series study provides a practical example of the management of RTH in a thyroidectomized patient, a pregnant woman, and a newborn. A novel RTH pathogenic mutation is described for the second time in literature. Furthermore, the importance of metabolic assessment in patients with RTHβ has been highlighted and the possible correlation between RTH and primary hyperparathyroidism is discussed. Full article
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