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Sirakov M, Claret L, Plateroti M. Thyroid Hormone Nuclear Receptor TRα1 and Canonical WNT Pathway Cross-Regulation in Normal Intestine and Cancer. Front Endocrinol (Lausanne) 2021; 12:725708. [PMID: 34956074 PMCID: PMC8705541 DOI: 10.3389/fendo.2021.725708] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 11/16/2021] [Indexed: 12/21/2022] Open
Abstract
A pivotal role of thyroid hormones and their nuclear receptors in intestinal development and homeostasis have been described, whereas their involvement in intestinal carcinogenesis is still controversial. In this perspective article we briefly summarize the recent advances in this field and present new data regarding their functional interaction with one of the most important signaling pathway, such as WNT, regulating intestinal development and carcinogenesis. These complex interactions unveil new concepts and will surely be of importance for translational research.
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Affiliation(s)
- Maria Sirakov
- Department of Biology and Evolution of Marine Organisms, Stazione Zoologica Anton Dohrn, Naples, Italy
| | - Leo Claret
- Université de Strasbourg, Inserm, Interface de Recherche fondamentale et Appliquée en Cancérologie (IRFAC)/Unité Mixte de Recherche (UMR)-S1113, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
| | - Michelina Plateroti
- Université de Strasbourg, Inserm, Interface de Recherche fondamentale et Appliquée en Cancérologie (IRFAC)/Unité Mixte de Recherche (UMR)-S1113, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Strasbourg, France
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2
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Krohn RM, Palace V, Smits JEG. Metal Changes in Pre- and Post-metamorphic Wood Frog (Lithobates sylvaticus) Tadpoles: Implications for Ecotoxicological Studies. ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2021; 80:760-768. [PMID: 32313976 DOI: 10.1007/s00244-020-00735-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 04/02/2020] [Indexed: 06/11/2023]
Abstract
The development of anuran larvae from hatchling through metamorphosis is a particularly sensitive life stage that often is studied to assess adverse effects of water pollution, such as metal contamination. As an integral part of the food chain, high metal exposure and accumulation in developing anuran larvae may not only affect their survival but also pose a threat to secondary consumers. The presented work examines metal accumulation in wood frog tadpoles (Lithobates sylvaticus) before and after reaching metamorphic climax at emergence of the forelimbs. Metal levels were determined in whole tadpoles pre- and post-metamorphic climax in tadpole tissue excluding the stomach and intestines, as well as in water, via inductively coupled plasma-mass spectrometry. Wood frog tadpoles concentrated metals in their gut coil, with a rapid decline coincident with metamorphic climax. Tadpoles raised in a diluted bitumen-contaminated environment had higher levels of vanadium, molybdenum and cadmium, but not at levels expected to negatively impact development. In conclusion, metal accumulation in wood frog tadpoles varies greatly depending on developmental stage surrounding metamorphic climax. Metabolic changes and intestinal remodelling must be considered when studying pollutants in developing anuran larvae.
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Affiliation(s)
- Regina M Krohn
- Department of Ecosystem and Public Health, Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada.
| | - Vince Palace
- International Institute for Sustainable Development - Experimental Lakes Area Inc., Winnipeg, MB, Canada
| | - Judit E G Smits
- Department of Ecosystem and Public Health, Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada
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Ya J, Li X, Wang L, Kou H, Wang H, Zhao H. The effects of chronic cadmium exposure on the gut of Bufo gargarizans larvae at metamorphic climax: Histopathological impairments, microbiota changes and intestinal remodeling disruption. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2020; 195:110523. [PMID: 32222598 DOI: 10.1016/j.ecoenv.2020.110523] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/01/2020] [Revised: 03/18/2020] [Accepted: 03/19/2020] [Indexed: 06/10/2023]
Abstract
Cadmium (Cd) is carcinogenic to human and it also has adverse effects on aquatic life such as amphibian larvae. However, its influences on amphibian gut morphology and development as well as intestinal microbiota are still hardly understood. In this study, we examined the effects of chronic cadmium exposure on the gut of tadpoles at Gosner stage 42 of metamorphic climax by using Bufo gargarizans as a model species. Tadpoles were exposed to cadmium concentrations at 0, 5, 100 and 200 μg L-1 from Gosner stage 26-42. The results showed that high cadmium (100 and 200 μg L-1) exposure caused significant decrease of body length and weight but significant increase of intestinal length and weight. Moreover, severe histopathological damages were induced by high Cd exposure. In addition, microbial communities in the gut of tadpoles in high cadmium exposure groups were remarkably different from those in control group. Unexpectedly, species diversity and richness were higher in the intestinal microbiota of 200 μg L-1 cadmium exposure group. Furthermore, the abundance of prevalent phyla, families and genera of intestinal microbiota were changed by cadmium exposure. Meanwhile, cadmium exposure perturbed gut renewal functions and the relative mRNA expression of genes involved in canonical and non-canonical Wnt signaling pathway was seriously affected by high cadmium exposure. We concluded that cadmium could be harmful to tadpole health by inducing intestinal histopathological damages, gut remodeling inhibition and intestinal microbiota alterations.
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Affiliation(s)
- Jing Ya
- College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, China
| | - Xuan Li
- College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, China
| | - Ling Wang
- College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, China
| | - Honghong Kou
- College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, China
| | - Hongyuan Wang
- College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, China
| | - Hongfeng Zhao
- College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, China.
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Zohreh B, Masoumeh V, Fakhraddin N, Omrani GHR. Apigenin-mediated Alterations in Viability and Senescence of SW480 Colorectal Cancer Cells Persist in The Presence of L-thyroxine. Anticancer Agents Med Chem 2020; 19:1535-1542. [PMID: 31272364 DOI: 10.2174/1871520619666190704102708] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 04/15/2019] [Accepted: 04/24/2019] [Indexed: 02/08/2023]
Abstract
INTRODUCTION Deregulation of Thyroid Hormones (THs) system in Colorectal Cancer (CRC) suggests that these hormones may play roles in CRC pathogenesis. Flavonoids are polyphenolic compounds, which possess potent antitumor activities and interfere, albeit some of them, with all aspects of THs physiology. Whether the antitumor actions of flavonoids are affected by THs is unknown. Therefore, we investigated the effects of apigenin (Api), a well-known flavone, on some tumorigenic properties of SW480 CRC cells in the presence and absence of L-thyroxine (T4). METHODS Cell viability was assessed by MTT assay. Flow cytometry and DNA electrophoresis were used to evaluate cell death. Cell senescence was examined by in situ detection of β-galactosidase activity. Protein expression was assessed by antibody array technique. RESULTS While T4 had minimal effects, Api reduced cell growth and senescence by induction of apoptosis. Expression of anti-apoptotic and pro-apoptotic proteins were differentially affected by Api and T4. Survivin, HSP60 and HTRA were the most expressed proteins by the cells. Almost all Api-induced effects persisted in the presence of T4. CONCLUSION These data suggest that Api may inhibit CRC cell growth and progression through induction of apoptosis rather than cell necrosis or senescence. In addition, they suggest that T4 has minimal effects on CRC cell growth, and is not able to antagonize the anti-growth effects of Api. Regardless of the treatments, cells expressed high levels of survivin, HSP60 and HTRA, indicating that these proteins may play central roles in SW480 CRC cell immortality.
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Affiliation(s)
- Bagheri Zohreh
- Department of Physiology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Varedi Masoumeh
- Department of Physiology, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
| | | | - Gholam H R Omrani
- Endocrine and Metabolism Research Center, School of Medicine, Shiraz University of Medical Sciences, Shiraz, Iran
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Sachs LM, Buchholz DR. Insufficiency of Thyroid Hormone in Frog Metamorphosis and the Role of Glucocorticoids. Front Endocrinol (Lausanne) 2019; 10:287. [PMID: 31143159 PMCID: PMC6521741 DOI: 10.3389/fendo.2019.00287] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2019] [Accepted: 04/23/2019] [Indexed: 12/17/2022] Open
Abstract
Thyroid hormone (TH) is the most important hormone in frog metamorphosis, a developmental process which will not occur in the absence of TH but can be induced precociously by exogenous TH. However, such treatments including in-vitro TH treatments often do not replicate the events of natural metamorphosis in many organs, including lung, brain, blood, intestine, pancreas, tail, and skin. A potential explanation for the discrepancy between natural and TH-induced metamorphosis is the involvement of glucocorticoids (GCs). GCs are not able to advance development by themselves but can modulate the rate of developmental progress induced by TH via increased tissue sensitivity to TH. Global gene expression analyses and endocrine experiments suggest that GCs may also have direct actions required for completion of metamorphosis independent of their effects on TH signaling. Here, we provide a new review and analysis of the requirement and necessity of TH signaling in light of recent insights from gene knockout frogs. We also examine the independent and interactive roles GCs play in regulating morphological and molecular metamorphic events dependent upon TH.
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Affiliation(s)
- Laurent M. Sachs
- Département Adaptation du Vivant, UMR 7221 CNRS, Muséum National d'histoire Naturelle, Paris, France
- *Correspondence: Laurent M. Sachs
| | - Daniel R. Buchholz
- Department of Biological Sciences, University of Cincinnati, Cincinnati, OH, United States
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Chai L, Dong Z, Chen A, Wang H. Changes in intestinal microbiota of Bufo gargarizans and its association with body weight during metamorphosis. Arch Microbiol 2018; 200:1087-1099. [PMID: 29748695 DOI: 10.1007/s00203-018-1523-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 04/11/2018] [Accepted: 05/03/2018] [Indexed: 01/05/2023]
Abstract
The assembly of intestinal microbial communities can play major roles in animal development. We hypothesized that intestinal microbial communities could mirror the developmental programs of amphibian metamorphosis. Here, we surveyed the morphological parameters of the body and intestine of Bufo gargarizans at varying developmental stages and inventoried the intestinal microbial communities of B. gargarizans at four key developmental stages via 16S rDNA gene sequencing. Firstly, our survey showed that during metamorphosis, body weight and intestinal weight were reduced by 56.8 and 91.8%, respectively. Secondly, the gut bacterial diversity of B. gargarizans decreased with metamorphosis and the composition of the tadpoles' intestinal microbiota varied across metamorphosis. Compared to aquatic larvae, terrestrial juveniles showed major shifts in microbial composition, including reduction in Proteobacteria and Actinobacteria, increases in Bacteroidetes and Fusobacteria, and the appearance of Verrucomicrobia. Firmicutes in four developmental stages showed similar abundance at the phylum level, but in each stage was driven by distinct genera. Enterobacter, Aeromonas, Mucinivorans and Bacteroides also changed in abundance and were found to be significantly correlated with loss of body or intestinal tissue during metamorphosis. These results indicate a shift in intestinal microbial community composition throughout amphibian metamorphosis.
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Affiliation(s)
- Lihong Chai
- School of Environmental Science and Engineering, Chang'an University, Xi'an, 710054, People's Republic of China.,Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of Education, Xi'an, 710062, People's Republic of China
| | - Zhongmin Dong
- Department of Biology, Saint Mary's University, 923 Robie Street, Halifax, NS, B3H 3C3, Canada
| | - Aixia Chen
- School of Environmental Science and Engineering, Chang'an University, Xi'an, 710054, People's Republic of China.,Key Laboratory of Subsurface Hydrology and Ecological Effect in Arid Region of Ministry of Education, Xi'an, 710062, People's Republic of China
| | - Hongyuan Wang
- College of Life Sciences, Shaanxi Normal University, Xi'an, 710119, People's Republic of China.
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Frau C, Godart M, Plateroti M. Thyroid hormone regulation of intestinal epithelial stem cell biology. Mol Cell Endocrinol 2017; 459:90-97. [PMID: 28288904 DOI: 10.1016/j.mce.2017.03.002] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2017] [Revised: 02/28/2017] [Accepted: 03/02/2017] [Indexed: 01/08/2023]
Abstract
The gastrointestinal tract is a well-characterized target of thyroid hormones and thyroid hormone nuclear receptors TRs, as extensively described in the literature. The paradigm is its important remodelling in amphibians during thyroid hormone-dependent metamorphosis. Interestingly, several studies have described the conservation of this hormonal signal during intestinal development in mammals. Additional data suggested that it may also play a role in intestinal homeostasis, stem cell physiology and progenitor commitment as well as in tumour development. It is worth underlining that in the mammalian intestine the functionality of the TRα1 receptor is coordinated and integrated with other signalling pathways, such as Wnt and Notch, specifically at the level of stem/progenitor cell populations. Here, we summarize these data and concepts and discuss this new role for thyroid hormones and the TRα1 receptor in the biology of intestinal epithelial precursor cells.
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Affiliation(s)
- Carla Frau
- Centre de Recherche en Cancérologie de Lyon, INSERM U1052, CNRS UMR5286, Université de Lyon, Université Lyon 1, Centre Léon Bérard, Département de La Recherche, 69000 Lyon, France
| | - Matthias Godart
- Centre de Recherche en Cancérologie de Lyon, INSERM U1052, CNRS UMR5286, Université de Lyon, Université Lyon 1, Centre Léon Bérard, Département de La Recherche, 69000 Lyon, France
| | - Michelina Plateroti
- Centre de Recherche en Cancérologie de Lyon, INSERM U1052, CNRS UMR5286, Université de Lyon, Université Lyon 1, Centre Léon Bérard, Département de La Recherche, 69000 Lyon, France.
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Choi J, Ishizuya-Oka A, Buchholz DR. Growth, Development, and Intestinal Remodeling Occurs in the Absence of Thyroid Hormone Receptor α in Tadpoles of Xenopus tropicalis. Endocrinology 2017; 158:1623-1633. [PMID: 28323943 DOI: 10.1210/en.2016-1955] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/21/2016] [Accepted: 02/22/2017] [Indexed: 12/19/2022]
Abstract
During development in all vertebrates, thyroid hormone receptors (TRs) are expressed before as well as during and after the peak in plasma thyroid hormone (TH) levels. Previously, we established a role for unliganded TRα in gene repression and developmental timing using tadpoles of TRα knockout (TRαKO) frogs. Here, we examined the role of liganded TRα on growth, development, and intestinal remodeling during natural and TH-induced metamorphosis. Disrupted TRα had little effect on growth during the larval period, but after metamorphosis, TRαKO juveniles grew more slowly than wild-type (WT) juveniles. TRαKO tadpoles developed faster throughout premetamorphosis when TH was low or absent, and despite their decreased responsivity to exogenous TH, TRαKO tadpoles not only were able to complete TH-dependent metamorphosis but also did so earlier than WT tadpoles. In contrast to external morphology, larval epithelial cell apoptosis and adult cell proliferation of intestinal remodeling were delayed in TRαKO tadpoles. Also, TRαKO intestines did not shrink in length to the full extent, and fewer intestinal folds into the lumen were present in TRαKO compared with WT juveniles. Such delayed remodeling occurred despite higher premetamorphic expression levels of TH target genes important for metamorphic progression-namely, TRβ, Klf9, and ST3. Furthermore, the decreased TH-dependent intestinal shrinkage was consistent with reduced TH response gene expression during natural and TH-induced metamorphosis. As in the TRα null mouse model, TRαKO frogs had statistically significant but surprisingly mild growth and development phenotypes with normal survival and fertility.
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Affiliation(s)
- Jinyoung Choi
- Department of Biological Sciences, University of Cincinnati, Cincinnati, Ohio 45221
| | | | - Daniel R Buchholz
- Department of Biological Sciences, University of Cincinnati, Cincinnati, Ohio 45221
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Sachs LM, Buchholz DR. Frogs model man: In vivo thyroid hormone signaling during development. Genesis 2017; 55. [PMID: 28109053 DOI: 10.1002/dvg.23000] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2016] [Revised: 11/14/2016] [Accepted: 11/16/2016] [Indexed: 12/25/2022]
Abstract
Thyroid hormone (TH) signaling comprises TH transport across cell membranes, metabolism by deiodinases, and molecular mechanisms of gene regulation. Proper TH signaling is essential for normal perinatal development, most notably for neurogenesis and fetal growth. Knowledge of perinatal TH endocrinology needs improvement to provide better treatments for premature infants and endocrine diseases during gestation and to counteract effects of endocrine disrupting chemicals. Studies in amphibians have provided major insights to understand in vivo mechanisms of TH signaling. The frog model boasts dramatic TH-dependent changes directly observable in free-living tadpoles with precise and easy experimental control of the TH response at developmental stages comparable to fetal stages in mammals. The hormones, their receptors, molecular mechanisms, and developmental roles of TH signaling are conserved to a high degree in humans and amphibians, such that with respect to developmental TH signaling "frogs are just little people that hop." The frog model is exceptionally illustrative of fundamental molecular mechanisms of in vivo TH action involving TH receptors, transcriptional cofactors, and chromatin remodeling. This review highlights the current need, recent successes, and future prospects using amphibians as a model to elucidate molecular mechanisms and functional roles of TH signaling during post-embryonic development.
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Affiliation(s)
- Laurent M Sachs
- UMR 7221 CNRS, Muséum National d'histoire Naturelle, Dépt. Régulation, Développement et Diversité Moléculaire, Sorbonne Universités, Paris, 75005, France
| | - Daniel R Buchholz
- Department of Biological Sciences, University of Cincinnati, Cincinnati, Ohio, 45221
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Conesa-Zamora P, García-Solano J, Turpin MDC, Sebastián-León P, Torres-Moreno D, Estrada E, Tuomisto A, Wilce J, Mäkinen MJ, Pérez-Guillermo M, Conesa A. Methylome profiling reveals functions and genes which are differentially methylated in serrated compared to conventional colorectal carcinoma. Clin Epigenetics 2015; 7:101. [PMID: 26388956 PMCID: PMC4574063 DOI: 10.1186/s13148-015-0128-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Accepted: 08/31/2015] [Indexed: 12/31/2022] Open
Abstract
Background Serrated adenocarcinoma (SAC) is a recently recognized colorectal cancer (CRC) subtype accounting for 7.5–8.7 % of CRCs. It has been shown that SAC has a worse prognosis and different histological and molecular features compared to conventional carcinoma (CC) but, to date, there is no study analysing its methylome profile. Results The methylation status of 450,000 CpG sites using the Infinium Human Methylation 450 BeadChip array was investigated in 103 colorectal specimens, including 39 SACs and 34 matched CCs, from Spanish and Finnish patients. Microarray data showed a higher representation of morphogenesis-, neurogenesis-, cytoskeleton- and vesicle transport-related functions and also significant differential methylation of 15 genes, including the iodothyronine deiodinase DIO3 and the forkhead family transcription factor FOXD2 genes which were validated at the CpG, mRNA and protein level using pyrosequencing, methylation-specific PCR, quantitative polymerase chain reaction (qPCR) and immunohistochemistry. A quantification study of the methylation status of CpG sequences in FOXD2 demonstrated a novel region controlling gene expression. Moreover, differences in these markers were also evident when comparing SAC with CRC showing molecular and histological features of high-level microsatellite instability. Conclusions This methylome study demonstrates distinct epigenetic regulation patterns in SAC which are consistent to previous expression profile studies and that DIO3 and FOXD2 might be molecular targets for a specific histology-oriented treatment of CRC. Electronic supplementary material The online version of this article (doi:10.1186/s13148-015-0128-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Pablo Conesa-Zamora
- Department of Pathology, Santa Lucía General University Hospital (HGUSL), C/Mezquita s/n, 30202 Cartagena, Spain ; Facultad de Ciencias de la Salud, Catholic University of Murcia (UCAM), Murcia, Spain
| | - José García-Solano
- Department of Pathology, Santa Lucía General University Hospital (HGUSL), C/Mezquita s/n, 30202 Cartagena, Spain ; Facultad de Ciencias de la Salud, Catholic University of Murcia (UCAM), Murcia, Spain
| | | | - Patricia Sebastián-León
- Department of Bioinformatics and Genomics, Centro de Investigación Príncipe Felipe (CIPF), Yúfera, 3, 46012 Valencia, Spain
| | - Daniel Torres-Moreno
- Department of Pathology, Santa Lucía General University Hospital (HGUSL), C/Mezquita s/n, 30202 Cartagena, Spain
| | - Eduardo Estrada
- Department of Social Psychology and Methodology, Autónoma University, Madrid, Spain
| | - Anne Tuomisto
- Department of Pathology, University of Oulu, Oulu, Finland
| | - Jamie Wilce
- Department of Pathology, Santa Lucía General University Hospital (HGUSL), C/Mezquita s/n, 30202 Cartagena, Spain
| | | | - Miguel Pérez-Guillermo
- Department of Pathology, Santa Lucía General University Hospital (HGUSL), C/Mezquita s/n, 30202 Cartagena, Spain
| | - Ana Conesa
- Department of Bioinformatics and Genomics, Centro de Investigación Príncipe Felipe (CIPF), Yúfera, 3, 46012 Valencia, Spain ; Microbiology and Cell Science, Institute of Food and Agricultural Science, University of Florida, Gainesville, USA
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Ueno T, Ishihara A, Yagi S, Koike T, Yamauchi K, Shiojiri N. Histochemical Analyses of Biliary Development During Metamorphosis of Xenopus laevis Tadpoles. Zoolog Sci 2015; 32:88-96. [DOI: 10.2108/zs140104] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Affiliation(s)
- Tomoya Ueno
- Department of Biology, Faculty of Science, Shizuoka University, Oya 836, Suruga-ku, Shizuoka City, Shizuoka 422-8529, Japan
| | - Akinori Ishihara
- Department of Biology, Faculty of Science, Shizuoka University, Oya 836, Suruga-ku, Shizuoka City, Shizuoka 422-8529, Japan
| | - Shinomi Yagi
- Department of Biology, Faculty of Science, Shizuoka University, Oya 836, Suruga-ku, Shizuoka City, Shizuoka 422-8529, Japan
| | - Toru Koike
- Department of Biology, Faculty of Science, Shizuoka University, Oya 836, Suruga-ku, Shizuoka City, Shizuoka 422-8529, Japan
| | - Kiyoshi Yamauchi
- Department of Biology, Faculty of Science, Shizuoka University, Oya 836, Suruga-ku, Shizuoka City, Shizuoka 422-8529, Japan
| | - Nobuyoshi Shiojiri
- Department of Biology, Faculty of Science, Shizuoka University, Oya 836, Suruga-ku, Shizuoka City, Shizuoka 422-8529, Japan
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Akat E, Arıkan H, Göçmen B. Histochemical and biometric study of the gastrointestinal system of Hyla orientalis (Bedriaga, 1890) (Anura, Hylidae). Eur J Histochem 2014; 58:2452. [PMID: 25578977 PMCID: PMC4289849 DOI: 10.4081/ejh.2014.2452] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2014] [Revised: 11/06/2014] [Accepted: 11/06/2014] [Indexed: 11/22/2022] Open
Abstract
This study was carried out to assess the localization of hyaluronic acid (HA) and the distribution of glycoproteins in the gastrointestinal system of adult Hyla orientalis. Histochemical analysis of the gastrointestinal system in H. orientalis showed that mucous content included glycogene and/or oxidable dioles [periodic acid/Schiff (PAS)+], neutral or acid-rich (PAS/AB pH 2.5+), sialic acid residues (KOH/PAS+) and acid sulphate [Aldehyde fuchsin (AF)+] glycoproteins. However the mucus content was not the same in stomach, small and large intestine. The mucus content of stomach included only glycogene and/or oxidable dioles and sialic acid residues. Besides these histochemical methods, the localization of HA was detected using biotinylated hyaluronic acid binding protein labeled with streptavidin-fluorescein isothiocyanate (FITC). In the extracellular matrix of the submucosa, the reaction for HA was evident. Since HA was located in submucosa beneath the epithelial layer of gastrointestinal system, it has a significant role in hydric balance, and essential to provide the gastrointestinal system integrity and functionality. According to biometric results, there were statistical differences between small and large intestine in terms of the amount of material stained positive with PAS/AB, PAS, KOH/PAS and AF/AB. Additionally, number of goblet cells in the small and large intestine was significantly different.
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Sirakov M, Kress E, Nadjar J, Plateroti M. Thyroid hormones and their nuclear receptors: new players in intestinal epithelium stem cell biology? Cell Mol Life Sci 2014; 71:2897-907. [PMID: 24604390 PMCID: PMC11113153 DOI: 10.1007/s00018-014-1586-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Revised: 01/31/2014] [Accepted: 02/12/2014] [Indexed: 12/14/2022]
Abstract
Thyroid hormones participate in the development and homeostasis of several organs and tissues. It is well documented that they act via nuclear receptors, the TRs, which are transcription factors whose function is modulated by the hormone T3. Importantly, T3-induced physiological response within a cell depends on the specific TR expression and on the T3 bioavailability. However, in addition to this T3-dependent control of TR functionality, increasing data show that the action of TRs is coordinated and integrated with other signaling pathways, specifically at the level of stem/progenitor cell populations. By focusing on the intestinal epithelium of both amphibians and mammals we summarize here new data in support of a role for thyroid hormones and the TR nuclear receptors in stem cell biology. This new concept may be extended to other organs and have biological relevance in therapeutic approaches aimed to target stem cells such as tissue engineering and cancer.
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Affiliation(s)
- Maria Sirakov
- Institut de Biologie et de Médecine Moléculaires, Université Libre de Bruxelles, Brussels, Belgium
| | - Elsa Kress
- Centre de Génétique et de Physiologie Moléculaire et Cellulaire, Université Claude Bernard Lyon 1, 16 Rue Raphael Dubois, 69622 Villeurbanne, France
| | - Julien Nadjar
- Centre de Génétique et de Physiologie Moléculaire et Cellulaire, Université Claude Bernard Lyon 1, 16 Rue Raphael Dubois, 69622 Villeurbanne, France
| | - Michelina Plateroti
- Centre de Génétique et de Physiologie Moléculaire et Cellulaire, Université Claude Bernard Lyon 1, 16 Rue Raphael Dubois, 69622 Villeurbanne, France
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Gomes AS, Kamisaka Y, Harboe T, Power DM, Rønnestad I. Functional modifications associated with gastrointestinal tract organogenesis during metamorphosis in Atlantic halibut (Hippoglossus hippoglossus). BMC DEVELOPMENTAL BIOLOGY 2014; 14:11. [PMID: 24552353 PMCID: PMC3940299 DOI: 10.1186/1471-213x-14-11] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Accepted: 12/09/2013] [Indexed: 02/06/2023]
Abstract
BACKGROUND Flatfish metamorphosis is a hormone regulated post-embryonic developmental event that transforms a symmetric larva into an asymmetric juvenile. In altricial-gastric teleost fish, differentiation of the stomach takes place after the onset of first feeding, and during metamorphosis dramatic molecular and morphological modifications of the gastrointestinal (GI-) tract occur. Here we present the functional ontogeny of the developing GI-tract from an integrative perspective in the pleuronectiforme Atlantic halibut, and test the hypothesis that the multiple functions of the teleost stomach develop synchronously during metamorphosis. RESULTS Onset of gastric function was determined with several approaches (anatomical, biochemical, molecular and in vivo observations). In vivo pH analysis in the GI-tract lumen combined with quantitative PCR (qPCR) of α and β subunits of the gastric proton pump (H+/K+-ATPase) and pepsinogen A2 indicated that gastric proteolytic capacity is established during the climax of metamorphosis. Transcript abundance of ghrelin, a putative orexigenic signalling molecule produced in the developing stomach, correlated (p < 0.05) with the emergence of gastric proteolytic activity, suggesting that the stomach's role in appetite regulation occurs simultaneously with the establishment of proteolytic function. A 3D models series of the GI-tract development indicated a functional pyloric sphincter prior to first feeding. Observations of fed larvae in vivo confirmed that stomach reservoir function was established before metamorphosis, and was thus independent of this event. Mechanical breakdown of food and transportation of chyme through the GI-tract was observed in vivo and resulted from phasic and propagating contractions established well before metamorphosis. The number of contractions in the midgut decreased at metamorphic climax synchronously with establishment of the stomach's proteolytic capacity and its increased peristaltic activity. Putative osmoregulatory competence of the GI-tract, inferred by abundance of Na+/K+-ATPase α transcripts, was already established at the onset of exogenous feeding and was unmodified by metamorphosis. CONCLUSIONS The functional specialization of the GI-tract was not exclusive to metamorphosis, and its osmoregulatory capacity and reservoir function were established before first feeding. Nonetheless, acid production and the proteolytic capacity of the stomach coincided with metamorphic climax, and also marked the onset of the stomach's involvement in appetite regulation via ghrelin.
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Affiliation(s)
- Ana S Gomes
- Department of Biology, University of Bergen, Po. Box 7803, NO-5020 Bergen, Norway
| | - Yuko Kamisaka
- Department of Biology, University of Bergen, Po. Box 7803, NO-5020 Bergen, Norway
| | - Torstein Harboe
- Institute of Marine Research, Austevoll Aquaculture Research Station, NO-5392 Storebø, Norway
| | - Deborah M Power
- Comparative and Molecular Endocrinology Group, Centre for Marine Sciences (CCMAR), University of Algarve, Campus de Gambelas, 8005-139 Faro, Portugal
| | - Ivar Rønnestad
- Department of Biology, University of Bergen, Po. Box 7803, NO-5020 Bergen, Norway
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Dentice M, Antonini D, Salvatore D. Type 3 deiodinase and solid tumors: an intriguing pair. Expert Opin Ther Targets 2013; 17:1369-79. [DOI: 10.1517/14728222.2013.833189] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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16
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Sirakov M, Skah S, Nadjar J, Plateroti M. Thyroid hormone's action on progenitor/stem cell biology: new challenge for a classic hormone? Biochim Biophys Acta Gen Subj 2012; 1830:3917-27. [PMID: 22890105 DOI: 10.1016/j.bbagen.2012.07.014] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2012] [Revised: 07/01/2012] [Accepted: 07/29/2012] [Indexed: 02/07/2023]
Abstract
BACKGROUND Thyroid hormones are involved in developmental and homeostatic processes in several tissues. Their action results in different outcomes depending on the developmental stage, tissue and/or cellular context. Interestingly, their pleiotropic roles are conserved across vertebrates. It is largely documented that thyroid hormones act via nuclear receptors, the TRs, which are transcription factors and whose activity can be modulated by the local availability of the hormone T3. In the "classical view", the T3-induced physiological response depends on the expression of specific TR isoforms and the iodothyronine deiodinase selenoenzymes that control the local level of T3, thus TR activity. SCOPE OF THE REVIEW Recent data have clearly established that the functionality of TRs is coordinated and integrated with other signaling pathways, specifically at the level of stem/progenitor cell populations. Here, we summarize these data and propose a new and intriguing role for thyroid hormones in two selected examples. MAJOR CONCLUSIONS In the intestinal epithelium and the retina, TRα1 and TRβ2 are expressed at the level of the precursors where they induce cell proliferation and differentiation, respectively. Moreover, these different functions result from the integration of the hormone signal with other intrinsic pathways, which play a fundamental role in progenitor/stem cell physiology. GENERAL SIGNIFICANCE Taken together, the interaction of TRs with other signaling pathways, specifically in stem/progenitor cells, is a new concept that may have biological relevance in therapeutic approaches aimed to target stem cells such as tissue engineering and cancer. This article is part of a Special Issue entitled Thyroid hormone signalling.
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Affiliation(s)
- Maria Sirakov
- Institut de Biologie et de Médecine Moléculaires, Université Libre de Bruxelles, Belgium
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17
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Sirakov M, Plateroti M. The thyroid hormones and their nuclear receptors in the gut: From developmental biology to cancer. Biochim Biophys Acta Mol Basis Dis 2011; 1812:938-46. [DOI: 10.1016/j.bbadis.2010.12.020] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2010] [Revised: 12/21/2010] [Accepted: 12/22/2010] [Indexed: 02/09/2023]
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18
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Carry-over effects of the larval environment on post-metamorphic performance in two hylid frogs. Oecologia 2010; 164:891-8. [PMID: 20658150 DOI: 10.1007/s00442-010-1728-8] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2009] [Accepted: 07/07/2010] [Indexed: 10/19/2022]
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19
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Abstract
During amphibian metamorphosis, the larval tissues/organs rapidly degenerate to adapt from the aquatic to the terrestrial life. At the cellular level, a large quantity of apoptosis occurs in a spatiotemporally-regulated fashion in different organs to ensure timely removal of larval organs/tissues and the development of adult ones for the survival of the individuals. Thus, amphibian metamorphosis provides us a good opportunity to understand the mechanisms regulating apoptosis. To investigate this process at the molecular level, a number of thyroid hormone (TH) response genes have been isolated from several organs of Xenopus laevis tadpoles and their expression and functional analyses are now in progress using modern molecular and genetic technologies. In this review, we will first summarize when and where apoptosis occurs in typical larva-specific and larval-to-adult remodeling amphibian organs to highlight that the timing of apoptosis is different in different tissues/organs, even though all are induced by the same circulating TH. Next, to discuss how TH spatiotemporally regulates the apoptosis, we will focus on apoptosis of the X. laevis small intestine, one of the best characterized remodeling organs. Functional studies of TH response genes using transgenic frogs and culture techniques have shown that apoptosis of larval epithelial cells can be induced by TH either cell-autonomously or indirectly through interactions with extracellular matrix (ECM) components of the underlying basal lamina. Here, we propose that multiple intra- and extracellular apoptotic pathways are coordinately controlled by TH to ensure massive but well-organized apoptosis, which is essential for the proper progression of amphibian metamorphosis.
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Affiliation(s)
- Atsuko Ishizuya-Oka
- Department of Biology, Nippon Medical School, Kawasaki, Kanagawa 211-0063, Japan
| | - Takashi Hasebe
- Department of Biology, Nippon Medical School, Kawasaki, Kanagawa 211-0063, Japan
| | - Yun-Bo Shi
- Laboratory of Gene Regulation and Development, National Institute for Child Health and Human Development, NIH, Bethesda, Maryland, MD 20892-5431, USA
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20
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Gene switching at Xenopus laevis metamorphosis. Dev Biol 2009; 338:117-26. [PMID: 19896938 DOI: 10.1016/j.ydbio.2009.10.041] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2009] [Revised: 10/28/2009] [Accepted: 10/28/2009] [Indexed: 11/24/2022]
Abstract
During the climax of amphibian metamorphosis many tadpole organs remodel. The different remodeling strategies are controlled by thyroid hormone (TH). The liver, skin, and tail fibroblasts shut off tadpole genes and activate frog genes in the same cell without DNA replication. We refer to this as "gene switching". In contrast, the exocrine pancreas and the intestinal epithelium dedifferentiate to a progenitor state and then redifferentiate to the adult cell type. Tadpole and adult globin are not present in the same cell. Switching from red cells containing tadpole-specific globin to those with frog globin in the liver occurs at a progenitor cell stage of development and is preceded by DNA replication. Red cell switching is the only one of these remodeling strategies that resembles a stem cell mechanism.
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21
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Schreiber AM, Mukhi S, Brown DD. Cell-cell interactions during remodeling of the intestine at metamorphosis in Xenopus laevis. Dev Biol 2009; 331:89-98. [PMID: 19409886 DOI: 10.1016/j.ydbio.2009.04.033] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2009] [Revised: 04/09/2009] [Accepted: 04/25/2009] [Indexed: 10/20/2022]
Abstract
Amphibian metamorphosis is accompanied by extensive intestinal remodeling. This process, mediated by thyroid hormone (TH) and its nuclear receptors, affects every cell type. Gut remodeling in Xenopus laevis involves epithelial and mesenchymal proliferation, smooth muscle thickening, neuronal aggregation, formation of intestinal folds, and shortening of its length by 75%. Transgenic tadpoles expressing a dominant negative TH receptor (TRDN) controlled by epithelial-, fibroblast-, and muscle-specific gene promoters were studied. TRDN expression in the epithelium caused abnormal development of virtually all cell types, with froglet guts displaying reduced intestinal folds, thin muscle and mesenchyme, absence of neurons, and reduced cell proliferation. TRDN expression in fibroblasts caused abnormal epithelia and mesenchyme development, and expression in muscle produced fewer enteric neurons and a reduced inter-muscular space. Gut shortening was inhibited only when TRDN was expressed in fibroblasts. Gut remodeling results from both cell-autonomous and cell-cell interactions.
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22
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Chen W, Obara M, Ishida Y, Suzuki KI, Yoshizato K. Characterization of histone lysine-specific demethylase in relation to thyroid hormone-regulated anuran metamorphosis. Dev Growth Differ 2007; 49:325-34. [PMID: 17501908 DOI: 10.1111/j.1440-169x.2007.00927.x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The thyroid hormone receptor (THR) is a member of the nuclear transcription factor and plays a central role in regulating anuran metamorphosis. Previous studies with mammalian cells have suggested that THR is involved in chromatin remodeling through histone methylation. In the present study, we cloned cDNA of lysine-specific demethylase gene, xLSD1, from Xenopus laevis and examined its expression in relation to metamorphosis. Overexpression of xLSD1 in A6 cells, a Xenopus laevis cell line, resulted in the decrease of methylation status of lysine residues of histone H3, indicating that the protein of cloned xLSD1 was functionally active. The expression of LSD1 at mRNA levels was up-regulated in the body skin and the intestine during natural and thyroid hormone-induced metamorphosis. Larval epidermal basal cells and intestinal epithelial cells at the premetamorphic stage were identified as the xLSD1-expressing cells. At the metamorphic climax stage the progenitor cells of adult epidermal basal cells also expressed xLSD1, whereas those of the adult intestinal epithelial cells did not. We propose that LSD1 participates in the regulation of metamorphosis through THR- or another transcriptional factor-induced chromatin remodeling.
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Affiliation(s)
- Wen Chen
- Department of Biological Science, Graduate School of Science, Hiroshima University, Kagamiyama 1-3-1, Higashihiroshima, Hiroshima 739-8526, Japan
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23
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Amphibian metamorphosis. Dev Biol 2007; 306:20-33. [PMID: 17449026 DOI: 10.1016/j.ydbio.2007.03.021] [Citation(s) in RCA: 311] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2007] [Revised: 03/09/2007] [Accepted: 03/18/2007] [Indexed: 10/23/2022]
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Ishizuya-Oka A. Regeneration of the amphibian intestinal epithelium under the control of stem cell niche. Dev Growth Differ 2007; 49:99-107. [PMID: 17335431 DOI: 10.1111/j.1440-169x.2007.00913.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The epithelium of the mammalian digestive tract originates from stem cells and undergoes rapid cell-renewal throughout adulthood. It has been proposed that the microenvironment around the stem cells, called 'niche', plays an important role in epithelial cell-renewal through cell-cell and cell-extracellular matrix interactions. The amphibian intestine, which establishes epithelial cell-renewal during metamorphosis, serves as a unique and good model for studying molecular mechanisms of the stem cell niche. By using the organ culture of the Xenopus laevis intestine, we have previously shown that larval-to-adult epithelial remodeling can be organ-autonomously induced by thyroid hormone (TH) and needs interactions with the surrounding connective tissue. Thus, in this animal model, the functional analysis of TH response genes is useful for clarifying the epithelial-connective tissue interactions essential for intestinal remodeling at the molecular level. Recent progress in culture and transgenic technology now enables us to investigate functions of such TH response genes in the X. laevis intestine and sheds light on molecular aspects of the stem cell niche that are common to the mammalian intestine.
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Affiliation(s)
- Atsuko Ishizuya-Oka
- Department of Biology, Nippon Medical School, 2-297-2 Kosugi-cho, Nakahara-ku, Kawasaki, Kanagawa 211-0063, Japan.
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Ishizuya-Oka A, Shi YB. Regulation of adult intestinal epithelial stem cell development by thyroid hormone duringXenopus laevis metamorphosis. Dev Dyn 2007; 236:3358-68. [PMID: 17705305 DOI: 10.1002/dvdy.21291] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
During amphibian metamorphosis, most or all of the larval intestinal epithelial cells undergo apoptosis. In contrast, stem cells of yet-unknown origin actively proliferate and, under the influence of the connective tissue, differentiate into the adult epithelium analogous to the mammalian counterpart. Thus, amphibian intestinal remodeling is useful for studying the stem cell niche, the clarification of which is urgently needed for regenerative therapies. This review highlights the molecular aspects of the niche using the Xenopus laevis intestine as a model. Because amphibian metamorphosis is completely controlled by thyroid hormone (TH), the analysis of TH response genes serves as a powerful means for clarifying its molecular mechanisms. Although functional analysis of the genes is still on the way, recent progresses in organ culture and transgenic studies have gradually uncovered important roles of cell-cell and cell-extracellular matrix interactions through stromelysin-3 and sonic hedgehog/bone morphogenetic protein-4 signaling pathway in the epithelial stem cell development.
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