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Glorieux L, Vandooren L, Derclaye S, Pyr Dit Ruys S, Oncina-Gil P, Salowka A, Herinckx G, Aajja E, Lemoine P, Spourquet C, Lefort H, Henriet P, Tyteca D, Spagnoli FM, Alsteens D, Vertommen D, Pierreux CE. In-Depth Analysis of the Pancreatic Extracellular Matrix during Development for Next-Generation Tissue Engineering. Int J Mol Sci 2023; 24:10268. [PMID: 37373416 DOI: 10.3390/ijms241210268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 06/04/2023] [Accepted: 06/09/2023] [Indexed: 06/29/2023] Open
Abstract
The pancreas is a complex organ consisting of differentiated cells and extracellular matrix (ECM) organized adequately to enable its endocrine and exocrine functions. Although much is known about the intrinsic factors that control pancreas development, very few studies have focused on the microenvironment surrounding pancreatic cells. This environment is composed of various cells and ECM components, which play a critical role in maintaining tissue organization and homeostasis. In this study, we applied mass spectrometry to identify and quantify the ECM composition of the developing pancreas at the embryonic (E) day 14.5 and postnatal (P) day 1 stages. Our proteomic analysis identified 160 ECM proteins that displayed a dynamic expression profile with a shift in collagens and proteoglycans. Furthermore, we used atomic force microscopy to measure the biomechanical properties and found that the pancreatic ECM was soft (≤400 Pa) with no significant change during pancreas maturation. Lastly, we optimized a decellularization protocol for P1 pancreatic tissues, incorporating a preliminary crosslinking step, which effectively preserved the 3D organization of the ECM. The resulting ECM scaffold proved suitable for recellularization studies. Our findings provide insights into the composition and biomechanics of the pancreatic embryonic and perinatal ECM, offering a foundation for future studies investigating the dynamic interactions between the ECM and pancreatic cells.
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Affiliation(s)
- Laura Glorieux
- Cell Biology Unit, de Duve Institute, UCLouvain, 1200 Brussels, Belgium
| | - Laura Vandooren
- Cell Biology Unit, de Duve Institute, UCLouvain, 1200 Brussels, Belgium
| | - Sylvie Derclaye
- Nanobiophysics Lab, Louvain Institute of Biomolecular Science and Technology, UCLouvain, 1348 Louvain-la-Neuve, Belgium
| | | | - Paloma Oncina-Gil
- Nanobiophysics Lab, Louvain Institute of Biomolecular Science and Technology, UCLouvain, 1348 Louvain-la-Neuve, Belgium
| | - Anna Salowka
- Centre for Gene Therapy and Regenerative Medicine, King's College London, Great Maze Pond, London SE1 9RT, UK
| | - Gaëtan Herinckx
- de Duve Institute and MASSPROT Platform, UCLouvain, 1200 Brussels, Belgium
| | - Elias Aajja
- Cell Biology Unit, de Duve Institute, UCLouvain, 1200 Brussels, Belgium
| | - Pascale Lemoine
- Cell Biology Unit, de Duve Institute, UCLouvain, 1200 Brussels, Belgium
| | | | - Hélène Lefort
- Cell Biology Unit, de Duve Institute, UCLouvain, 1200 Brussels, Belgium
| | - Patrick Henriet
- Cell Biology Unit, de Duve Institute, UCLouvain, 1200 Brussels, Belgium
| | - Donatienne Tyteca
- Cell Biology Unit, de Duve Institute, UCLouvain, 1200 Brussels, Belgium
| | - Francesca M Spagnoli
- Centre for Gene Therapy and Regenerative Medicine, King's College London, Great Maze Pond, London SE1 9RT, UK
| | - David Alsteens
- Nanobiophysics Lab, Louvain Institute of Biomolecular Science and Technology, UCLouvain, 1348 Louvain-la-Neuve, Belgium
| | - Didier Vertommen
- de Duve Institute and MASSPROT Platform, UCLouvain, 1200 Brussels, Belgium
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Spourquet C, Delcorte O, Lemoine P, Dauguet N, Loriot A, Achouri Y, Hollmén M, Jalkanen S, Huaux F, Lucas S, Meerkeeck PV, Knauf JA, Fagin JA, Dessy C, Mourad M, Henriet P, Tyteca D, Marbaix E, Pierreux CE. BRAFV600E Expression in Thyrocytes Causes Recruitment of Immunosuppressive STABILIN-1 Macrophages. Cancers (Basel) 2022; 14:cancers14194687. [PMID: 36230610 PMCID: PMC9563029 DOI: 10.3390/cancers14194687] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 09/18/2022] [Accepted: 09/21/2022] [Indexed: 11/22/2022] Open
Abstract
Simple Summary Incidence of thyroid cancer, including papillary thyroid cancer, is rapidly increasing. Oncogenes, such as the BRAFV600E, have been identified, and their effect on thyroid cancer cells have been studied in vitro and in mouse models. What is less understood is the impact of these mutations on thyroid cancer microenvironment and, in turn, the effect of changes in the microenvironment on tumor progression. We investigated the modifications in the cellular composition of thyroid cancer microenvironment using an inducible mouse model. We focused on a subpopulation of macrophages, expressing the STABILIN-1 protein, recruited in the thyroid tumor microenvironment following BRAFV600E expression. CRISPR/Cas9 genetic inactivation of Stablin-1 did not change macrophage recruitment but highlighted the immunosuppressive role of STABILIN-1-expressing macrophages. The identification of a similar subpopulation of STABILIN-1 macrophages in human thyroid diseases supports a conserved role for these macrophages and offers an opportunity for intervention. Abstract Papillary thyroid carcinoma (PTC) is the most frequent histological subtype of thyroid cancers (TC), and BRAFV600E genetic alteration is found in 60% of this endocrine cancer. This oncogene is associated with poor prognosis, resistance to radioiodine therapy, and tumor progression. Histological follow-up by anatomo-pathologists revealed that two-thirds of surgically-removed thyroids do not present malignant lesions. Thus, continued fundamental research into the molecular mechanisms of TC downstream of BRAFV600E remains central to better understanding the clinical behavior of these tumors. To study PTC, we used a mouse model in which expression of BRAFV600E was specifically switched on in thyrocytes by doxycycline administration. Upon daily intraperitoneal doxycycline injection, thyroid tissue rapidly acquired histological features mimicking human PTC. Transcriptomic analysis revealed major changes in immune signaling pathways upon BRAFV600E induction. Multiplex immunofluorescence confirmed the abundant recruitment of macrophages, among which a population of LYVE-1+/CD206+/STABILIN-1+ was dramatically increased. By genetically inactivating the gene coding for the scavenger receptor STABILIN-1, we showed an increase of CD8+ T cells in this in situ BRAFV600E-dependent TC. Lastly, we demonstrated the presence of CD206+/STABILIN-1+ macrophages in human thyroid pathologies. Altogether, we revealed the recruitment of immunosuppressive STABILIN-1 macrophages in a PTC mouse model and the interest to further study this macrophage subpopulation in human thyroid tissues.
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Affiliation(s)
- Catherine Spourquet
- CELL Unit, de Duve Institute, Université Catholique de Louvain, 1200 Brussels, Belgium
| | - Ophélie Delcorte
- CELL Unit, de Duve Institute, Université Catholique de Louvain, 1200 Brussels, Belgium
| | - Pascale Lemoine
- CELL Unit, de Duve Institute, Université Catholique de Louvain, 1200 Brussels, Belgium
| | - Nicolas Dauguet
- CYTF Platform, de Duve Institute, Université Catholique de Louvain, 1200 Brussels, Belgium
| | - Axelle Loriot
- CBIO Unit, de Duve Institute, Université Catholique de Louvain, 1200 Brussels, Belgium
| | - Younes Achouri
- Transgenesis Platform, Université Catholique de Louvain, 1200 Brussels, Belgium
| | - Maija Hollmén
- MediCity Research Laboratory and InFLAMES Flagship, University of Turku, 20500 Turku, Finland
| | - Sirpa Jalkanen
- MediCity Research Laboratory and InFLAMES Flagship, University of Turku, 20500 Turku, Finland
| | - François Huaux
- LTAP Unit, IREC, Université Catholique de Louvain, 1200 Brussels, Belgium
| | - Sophie Lucas
- GECE Unit, de Duve Institute, Université Catholique de Louvain, 1200 Brussels, Belgium
- Walloon Excellence in Life Sciences and Biotechnology (WELBIO), 1300 Wavre, Belgium
| | - Pierre Van Meerkeeck
- GECE Unit, de Duve Institute, Université Catholique de Louvain, 1200 Brussels, Belgium
| | - Jeffrey A. Knauf
- Department of Otolaryngology Head & Neck Surgery in the Cleveland Clinic Lerner, College of Medicine of Case Western Reserve University, Cleveland, OH 44106, USA
| | - James A. Fagin
- Department of Medicine and Human Oncology & Pathogenesis Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Chantal Dessy
- FATH & MORF Unit, IREC, Université Catholique de Louvain, 1200 Brussels, Belgium
| | - Michel Mourad
- Surgery and Abdominal Transplantation Division, Cliniques Universitaires Saint-Luc, Université Catholique de Louvain, 1200 Brussels, Belgium
| | - Patrick Henriet
- CELL Unit, de Duve Institute, Université Catholique de Louvain, 1200 Brussels, Belgium
| | - Donatienne Tyteca
- CELL Unit, de Duve Institute, Université Catholique de Louvain, 1200 Brussels, Belgium
| | - Etienne Marbaix
- CELL Unit, de Duve Institute, Université Catholique de Louvain, 1200 Brussels, Belgium
| | - Christophe E. Pierreux
- CELL Unit, de Duve Institute, Université Catholique de Louvain, 1200 Brussels, Belgium
- Correspondence: ; Tel.:+32-2-764-65-22
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Delcorte O, Craps J, Mahibullah S, Spourquet C, D'Auria L, Van Der Smissen P, Dessy C, Marbaix E, Mourad M, Pierreux CE. Two miRNAs enriched in plasma extracellular vesicles are potential biomarkers for thyroid cancer. Endocr Relat Cancer 2022; 29:389-401. [PMID: 35521768 DOI: 10.1530/erc-21-0343] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 04/14/2022] [Indexed: 11/08/2022]
Abstract
Differential diagnosis of thyroid cancer and benign nodules is still one of the most challenging issues in the field of endocrinology. To overcome overdiagnosis of papillary thyroid carcinomas (PTC) and the consecutive overtreatment of multinodular diseases, the search for easily accessible, sensitive and accurate biomarkers is critical. Several micro-RNAs (miRNAs) freely circulating in peripheral blood or enclosed in extracellular vesicles (EVs) have been proposed as potential biomarkers from non-invasive liquid biopsies. However, protocols are rarely comparable and conflicting data exist in the literature. In this work, we aimed to assess the diagnostic value of six micro-RNAs by comparing their expression in thyroid tissue to their abundance in bulk plasma and in plasma-EVs, before and after thyroid surgery. Plasma-EVs were isolated using a sequential density- and size-based fractionation, followed by in-depth characterization, confirming EV purity. Micro-RNA levels were measured by RT-qPCR in thyroid tissue, plasma and plasma-EVs. Among the six candidates, only miR-146b-5p and miR-21a-5p displayed a significant differential abundance in purified plasma-derived EVs from patients with PTC and benign disease. However, no difference could be demonstrated in bulk plasma through our cohort of patients. Overall, our work supports the use of a well-defined protocol of plasma-EV miRNAs purification for biomarker discovery, rather than the use of freely circulating miRNAs in bulk plasma. Our work also demonstrates that standardized pre-analytical and analytical procedures as well as optimized EV-miRNAs detection methods are essential.
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Affiliation(s)
- Ophélie Delcorte
- CELL Unit, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - Julie Craps
- FATH & MORF Unit, IREC, Université Catholique de Louvain, Brussels, Belgium
| | - Siam Mahibullah
- CELL Unit, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - Catherine Spourquet
- CELL Unit, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - Ludovic D'Auria
- Neurochemistry group, Institute of Neurosciences, Université Catholique de Louvain, Brussels, Belgium
| | | | - Chantal Dessy
- FATH & MORF Unit, IREC, Université Catholique de Louvain, Brussels, Belgium
| | - Etienne Marbaix
- CELL Unit, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - Michel Mourad
- Surgery and Abdominal Transplantation Division, Cliniques Universitaires Saint-Luc, Université Catholique de Louvain, Brussels, Belgium
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Heymans C, Delcorte O, Spourquet C, Villacorte-Tabelin M, Dupasquier S, Achouri Y, Mahibullah S, Lemoine P, Balda MS, Matter K, Pierreux CE. Spatio-temporal expression pattern and role of the tight junction protein MarvelD3 in pancreas development and function. Sci Rep 2021; 11:14519. [PMID: 34267243 PMCID: PMC8282860 DOI: 10.1038/s41598-021-93654-2] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Accepted: 06/23/2021] [Indexed: 11/29/2022] Open
Abstract
Tight junction complexes are involved in the establishment and maintenance of cell polarity and the regulation of signalling pathways, controlling biological processes such as cell differentiation and cell proliferation. MarvelD3 is a tight junction protein expressed in adult epithelial and endothelial cells. In Xenopus laevis, MarvelD3 morphants present differentiation defects of several ectodermal derivatives. In vitro experiments further revealed that MarvelD3 couples tight junctions to the MEKK1-JNK pathway to regulate cell behaviour and survival. In this work, we found that MarvelD3 is expressed from early developmental stages in the exocrine and endocrine compartments of the pancreas, as well as in endothelial cells of this organ. We thoroughly characterized MarvelD3 expression pattern in developing pancreas and evaluated its function by genetic ablation. Surprisingly, inactivation of MarvelD3 in mice did not alter development and differentiation of the pancreatic tissue. Moreover, tight junction formation and organization, cell polarization, and activity of the JNK-pathway were not impacted by the deletion of MarvelD3.
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Affiliation(s)
| | - Ophélie Delcorte
- Cell Biology Unit, de Duve Institute, UCLouvain, Woluwe, Belgium
| | | | - Mylah Villacorte-Tabelin
- Cell Biology Unit, de Duve Institute, UCLouvain, Woluwe, Belgium
- PRISM, MSU-IIT, Iligan City, Philippines
| | | | | | - Siam Mahibullah
- Cell Biology Unit, de Duve Institute, UCLouvain, Woluwe, Belgium
| | - Pascale Lemoine
- Cell Biology Unit, de Duve Institute, UCLouvain, Woluwe, Belgium
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5
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Gonay L, Spourquet C, Baudoin M, Lepers L, Lemoine P, Fletcher AG, Hanert E, Pierreux CE. Modelling of Epithelial Growth, Fission and Lumen Formation During Embryonic Thyroid Development: A Combination of Computational and Experimental Approaches. Front Endocrinol (Lausanne) 2021; 12:655862. [PMID: 34163435 PMCID: PMC8216395 DOI: 10.3389/fendo.2021.655862] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Accepted: 04/22/2021] [Indexed: 12/18/2022] Open
Abstract
Organogenesis is the phase of embryonic development leading to the formation of fully functional organs. In the case of the thyroid, organogenesis starts from the endoderm and generates a multitude of closely packed independent spherical follicular units surrounded by a dense network of capillaries. Follicular organisation is unique and essential for thyroid function, i.e. thyroid hormone production. Previous in vivo studies showed that, besides their nutritive function, endothelial cells play a central role during thyroid gland morphogenesis. However, the precise mechanisms and biological parameters controlling the transformation of the multi-layered thyroid epithelial primordium into a multitude of single-layered follicles are mostly unknown. Animal studies used to improve understanding of organogenesis are costly and time-consuming, with recognised limitations. Here, we developed and used a 2-D vertex model of thyroid growth, angiogenesis and folliculogenesis, within the open-source Chaste framework. Our in silico model, based on in vivo images, correctly simulates the differential growth and proliferation of central and peripheral epithelial cells, as well as the morphogen-driven migration of endothelial cells, consistently with our experimental data. Our simulations further showed that reduced epithelial cell adhesion was critical to allow endothelial invasion and fission of the multi-layered epithelial mass. Finally, our model also allowed epithelial cell polarisation and follicular lumen formation by endothelial cell abundance and proximity. Our study illustrates how constant discussion between theoretical and experimental approaches can help us to better understand the roles of cellular movement, adhesion and polarisation during thyroid embryonic development. We anticipate that the use of in silico models like the one we describe can push forward the fields of developmental biology and regenerative medicine.
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Affiliation(s)
- Leolo Gonay
- Earth and Life Institute, UCLouvain, Louvain-La-Neuve, Belgium
- de Duve Institute, UCLouvain, Woluwé-Saint-Lambert, Belgium
| | | | - Matthieu Baudoin
- Earth and Life Institute, UCLouvain, Louvain-La-Neuve, Belgium
- de Duve Institute, UCLouvain, Woluwé-Saint-Lambert, Belgium
| | - Ludovic Lepers
- Earth and Life Institute, UCLouvain, Louvain-La-Neuve, Belgium
- de Duve Institute, UCLouvain, Woluwé-Saint-Lambert, Belgium
| | | | - Alexander G. Fletcher
- School of Mathematics and Statistics, University of Sheffield, Sheffield, United Kingdom
| | - Emmanuel Hanert
- Earth and Life Institute, UCLouvain, Louvain-La-Neuve, Belgium
| | - Christophe E. Pierreux
- de Duve Institute, UCLouvain, Woluwé-Saint-Lambert, Belgium
- *Correspondence: Christophe E. Pierreux,
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Grieco G, Wang T, Delcorte O, Spourquet C, Janssens V, Strickaert A, Gaide Chevronnay HP, Liao XH, Bilanges B, Refetoff S, Vanhaesebroeck B, Maenhaut C, Courtoy PJ, Pierreux CE. Class III PI3K Vps34 Controls Thyroid Hormone Production by Regulating Thyroglobulin Iodination, Lysosomal Proteolysis, and Tissue Homeostasis. Thyroid 2020; 30:133-146. [PMID: 31650902 PMCID: PMC6983755 DOI: 10.1089/thy.2019.0182] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Background: The production of thyroid hormones [triiodothyronine (T3), thyroxine (T4)] depends on the organization of the thyroid in follicles, which are lined by a monolayer of thyrocytes with strict apicobasal polarity. This polarization supports vectorial transport of thyroglobulin (Tg) for storage into, and recapture from, the colloid. It also allows selective addressing of channels, transporters, ion pumps, and enzymes to their appropriate basolateral [Na+/I- symporter (NIS), SLC26A7, and Na+/K+-ATPase] or apical membrane domain (anoctamin, SLC26A4, DUOX2, DUOXA2, and thyroperoxidase). How these actors of T3/T4 synthesis reach their final destination remains poorly understood. The PI 3-kinase isoform Vps34/PIK3C3 is now recognized as a main component in the general control of vesicular trafficking and of cell homeostasis through the regulation of endosomal trafficking and autophagy. We recently reported that conditional Vps34 inactivation in proximal tubular cells in the kidney prevents normal addressing of apical membrane proteins and causes abortive macroautophagy. Methods:Vps34 was inactivated using a Pax8-driven Cre recombinase system. The impact of Vps34 inactivation in thyrocytes was analyzed by histological, immunolocalization, and messenger RNA expression profiling. Thyroid hormone synthesis was assayed by 125I injection and plasma analysis. Results:Vps34 conditional knockout (Vps34cKO) mice were born at the expected Mendelian ratio and showed normal growth until postnatal day 14 (P14), then stopped growing and died at ∼1 month of age. We therefore analyzed thyroid Vps34cKO at P14. We found that loss of Vps34 in thyrocytes causes (i) disorganization of thyroid parenchyma, with abnormal thyrocyte and follicular shape and reduced PAS+ colloidal spaces; (ii) severe noncompensated hypothyroidism with extremely low T4 levels (0.75 ± 0.62 μg/dL) and huge thyrotropin plasma levels (19,300 ± 10,500 mU/L); (iii) impaired 125I organification at comparable uptake and frequent occurrence of follicles with luminal Tg but nondetectable T4-bearing Tg; (iv) intense signal in thyrocytes for the lysosomal membrane marker, LAMP-1, as well as Tg and the autophagy marker, p62, indicating defective lysosomal proteolysis; and (v) presence of macrophages in the colloidal space. Conclusions: We conclude that Vps34 is crucial for thyroid hormonogenesis, at least by controlling epithelial organization, Tg iodination as well as proteolytic T3/T4 excision in lysosomes.
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Affiliation(s)
- Giuseppina Grieco
- Cell Biology Unit, de Duve Institute and Université Catholique de Louvain, Brussels, Belgium
| | - Tongsong Wang
- Cell Biology Unit, de Duve Institute and Université Catholique de Louvain, Brussels, Belgium
| | - Ophélie Delcorte
- Cell Biology Unit, de Duve Institute and Université Catholique de Louvain, Brussels, Belgium
| | - Catherine Spourquet
- Cell Biology Unit, de Duve Institute and Université Catholique de Louvain, Brussels, Belgium
| | - Virginie Janssens
- Cell Biology Unit, de Duve Institute and Université Catholique de Louvain, Brussels, Belgium
| | - Aurélie Strickaert
- Thyroid Cancer Group, Faculty of Medecine, Institute of Interdisciplinary Research (IRIBHM), Université libre de Bruxelles, Brussels, Belgium
| | | | - Xiao-Hui Liao
- Department of Medicine, The University of Chicago, Chicago, Illinois
| | - Benoît Bilanges
- Cell Signalling, UCL Cancer Institute, University College London, London, United Kingdom
| | - Samuel Refetoff
- Department of Medicine, The University of Chicago, Chicago, Illinois
- Department of Pediatrics and Genetics, The University of Chicago, Chicago, Illinois
| | - Bart Vanhaesebroeck
- Cell Signalling, UCL Cancer Institute, University College London, London, United Kingdom
| | - Carine Maenhaut
- Thyroid Cancer Group, Faculty of Medecine, Institute of Interdisciplinary Research (IRIBHM), Université libre de Bruxelles, Brussels, Belgium
| | - Pierre J. Courtoy
- Cell Biology Unit, de Duve Institute and Université Catholique de Louvain, Brussels, Belgium
| | - Christophe E. Pierreux
- Cell Biology Unit, de Duve Institute and Université Catholique de Louvain, Brussels, Belgium
- Address correspondence to: Christophe E. Pierreux, PhD, Cell Biology Unit, de Duve Institute and Université Catholique de Louvain, 75, Avenue Hippocrate, Brussels B-1200, Belgium
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7
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Degosserie J, Heymans C, Spourquet C, Halbout M, D'Auria L, Van Der Smissen P, Vertommen D, Courtoy PJ, Tyteca D, Pierreux CE. Extracellular vesicles from endothelial progenitor cells promote thyroid follicle formation. J Extracell Vesicles 2018; 7:1487250. [PMID: 29963298 PMCID: PMC6022243 DOI: 10.1080/20013078.2018.1487250] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2017] [Accepted: 06/03/2018] [Indexed: 01/08/2023] Open
Abstract
Organogenesis is a complex and dynamic process requiring reciprocal communication between different cell types. In the thyroid, thyrocyte progenitors secrete the angiocrine factor, VEGFA, to recruit endothelial cells. In return, endothelial cells promote thyrocyte organisation into spherical follicular structures, which are responsible for thyroid hormone synthesis and storage. Medium conditioned by endothelial progenitor cells (EPCs) can promote follicle formation and lumen expansion (i.e. folliculogenesis) in an ex vivo culture system of thyroid lobes. Here, we postulated that endothelial cells instruct thyrocyte progenitors by producing extracellular vesicles (EVs). We found that medium conditioned by EPCs contain EVs with exosomal characteristics and that these vesicles can be incorporated into thyrocyte progenitors. By mass spectrometry, laminin peptides were abundantly identified in the EV preparations, probably co-sedimenting with EVs. Laminin-α1 silencing in EPC abrogated the folliculogenic effect of EVs. However, density gradient separation of EVs from laminins revealed that both EV-rich and laminin-rich fractions exhibited folliculogenic activity. In conclusion, we suggest that endothelial cells can produce EVs favouring thyrocyte organisation into follicles and lumen expansion, a mechanism promoted by laminin-α1.
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Affiliation(s)
- Jonathan Degosserie
- CELL Unit, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - Charlotte Heymans
- CELL Unit, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - Catherine Spourquet
- CELL Unit, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - Mathias Halbout
- BCHM Unit, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - Ludovic D'Auria
- Neurochemistry group, CEMO division, Institute of Neuroscience, Université Catholique de Louvain, Brussels, Belgium
| | - Patrick Van Der Smissen
- CELL Unit, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium.,PICT plateform, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - Didier Vertommen
- PHOS Unit, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - Pierre J Courtoy
- CELL Unit, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - Donatienne Tyteca
- CELL Unit, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium.,PICT plateform, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
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