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Edri S, Rosenthal V, Ginsburg O, Newman Frisch A, Pierreux CE, Sharon N, Levenberg S. 3D model of mouse embryonic pancreas and endocrine compartment using stem cell-derived mesoderm and pancreatic progenitors. iScience 2024; 27:109959. [PMID: 38832019 PMCID: PMC11144751 DOI: 10.1016/j.isci.2024.109959] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2023] [Revised: 03/21/2024] [Accepted: 05/08/2024] [Indexed: 06/05/2024] Open
Abstract
The developing mouse pancreas is surrounded by mesoderm compartments providing signals that induce pancreas formation. Most pancreatic organoid protocols lack this mesoderm niche and only partially capture the pancreatic cell repertoire. This work aims to generate pancreatic aggregates by differentiating mouse embryonic stem cells (mESCs) into mesoderm progenitors (MPs) and pancreas progenitors (PPs), without using Matrigel. First, mESCs were differentiated into epiblast stem cells (EpiSCs) to enhance the PP differentiation rate. Next, PPs and MPs aggregated together giving rise to various pancreatic cell types, including endocrine, acinar, and ductal cells, and to endothelial cells. Single-cell RNA sequencing analysis revealed a larger endocrine population within the PP + MP aggregates, as compared to PPs alone or PPs in Matrigel aggregates. The PP + MP aggregate gene expression signatures and its endocrine population percentage closely resembled those of the endocrine population found in the mouse embryonic pancreas, which holds promise for studying pancreas development.
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Affiliation(s)
- Shlomit Edri
- Faculty of Biomedical Engineering, Technion – Israel Institute of Technology, Haifa 3200003, Israel
| | - Vardit Rosenthal
- Faculty of Biomedical Engineering, Technion – Israel Institute of Technology, Haifa 3200003, Israel
| | - Or Ginsburg
- Faculty of Biomedical Engineering, Technion – Israel Institute of Technology, Haifa 3200003, Israel
| | - Abigail Newman Frisch
- Faculty of Biomedical Engineering, Technion – Israel Institute of Technology, Haifa 3200003, Israel
| | | | - Nadav Sharon
- Faculty of Biology, Technion – Israel Institute of Technology, Haifa 3200003, Israel
| | - Shulamit Levenberg
- Faculty of Biomedical Engineering, Technion – Israel Institute of Technology, Haifa 3200003, Israel
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2
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Parte S, Kaur AB, Nimmakayala RK, Ogunleye AO, Chirravuri R, Vengoji R, Leon F, Nallasamy P, Rauth S, Alsafwani ZW, Lele S, Cox JL, Bhat I, Singh S, Batra SK, Ponnusamy MP. Cancer-Associated Fibroblast Induces Acinar-to-Ductal Cell Transdifferentiation and Pancreatic Cancer Initiation Via LAMA5/ITGA4 Axis. Gastroenterology 2024; 166:842-858.e5. [PMID: 38154529 DOI: 10.1053/j.gastro.2023.12.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2023] [Revised: 12/09/2023] [Accepted: 12/19/2023] [Indexed: 12/30/2023]
Abstract
BACKGROUND & AIMS Pancreatic ductal adenocarcinoma (PDAC) is characterized by desmoplastic stroma surrounding most tumors. Activated stromal fibroblasts, namely cancer-associated fibroblasts (CAFs), play a major role in PDAC progression. We analyzed whether CAFs influence acinar cells and impact PDAC initiation, that is, acinar-to-ductal metaplasia (ADM). ADM connection with PDAC pathophysiology is indicated, but not yet established. We hypothesized that CAF secretome might play a significant role in ADM in PDAC initiation. METHODS Mouse and human acinar cell organoids, acinar cells cocultured with CAFs and exposed to CAF-conditioned media, acinar cell explants, and CAF cocultures were examined by means of quantitative reverse transcription polymerase chain reaction, RNA sequencing, immunoblotting, and confocal microscopy. Data from liquid chromatography with tandem mass spectrometry analysis of CAF-conditioned medium and RNA sequencing data of acinar cells post-conditioned medium exposure were integrated using bioinformatics tools to identify the molecular mechanism for CAF-induced ADM. Using confocal microscopy, immunoblotting, and quantitative reverse transcription polymerase chain reaction analysis, we validated the depletion of a key signaling axis in the cell line, acinar explant coculture, and mouse cancer-associated fibroblasts (mCAFs). RESULTS A close association of acino-ductal markers (Ulex europaeus agglutinin 1, amylase, cytokeratin-19) and mCAFs (α-smooth muscle actin) in LSL-KrasG12D/+; LSL-Trp53R172H/+; Pdx1Cre (KPC) and LSL-KrasG12D/+; Pdx1Cre (KC) autochthonous progression tumor tissue was observed. Caerulein treatment-induced mCAFs increased cytokeratin-19 and decreased amylase in wild-type and KC pancreas. Likewise, acinar-mCAF cocultures revealed the induction of ductal transdifferentiation in cell line, acinar-organoid, and explant coculture formats in WT and KC mice pancreas. Proteomic and transcriptomic data integration revealed a novel laminin α5/integrinα4/stat3 axis responsible for CAF-mediated acinar-to-ductal cell transdifferentiation. CONCLUSIONS Results collectively suggest the first evidence for CAF-influenced acino-ductal phenotypic switchover, thus highlighting the tumor microenvironment role in pancreatic carcinogenesis inception.
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Affiliation(s)
- Seema Parte
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center at Omaha, Omaha, Nebraska
| | - Annant B Kaur
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center at Omaha, Omaha, Nebraska
| | - Rama Krishna Nimmakayala
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center at Omaha, Omaha, Nebraska
| | - Ayoola O Ogunleye
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center at Omaha, Omaha, Nebraska
| | - Ramakanth Chirravuri
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center at Omaha, Omaha, Nebraska
| | - Raghupathy Vengoji
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center at Omaha, Omaha, Nebraska
| | - Frank Leon
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center at Omaha, Omaha, Nebraska
| | - Palanisamy Nallasamy
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center at Omaha, Omaha, Nebraska
| | - Sanchita Rauth
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center at Omaha, Omaha, Nebraska
| | - Zahraa Wajih Alsafwani
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center at Omaha, Omaha, Nebraska
| | - Subodh Lele
- Department of Pathology and Microbiology, University of Nebraska Medical Center at Omaha, Omaha, Nebraska
| | - Jesse L Cox
- Department of Pathology and Microbiology, University of Nebraska Medical Center at Omaha, Omaha, Nebraska
| | - Ishfaq Bhat
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of Nebraska Medical Center at Omaha, Omaha, Nebraksa
| | - Shailender Singh
- Division of Gastroenterology and Hepatology, Department of Internal Medicine, University of Nebraska Medical Center at Omaha, Omaha, Nebraksa
| | - Surinder K Batra
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center at Omaha, Omaha, Nebraska; Fred and Pamela Buffett Cancer Center, Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center at Omaha, Omaha, Nebraska.
| | - Moorthy P Ponnusamy
- Department of Biochemistry and Molecular Biology, University of Nebraska Medical Center at Omaha, Omaha, Nebraska; Fred and Pamela Buffett Cancer Center, Eppley Institute for Research in Cancer and Allied Diseases, University of Nebraska Medical Center at Omaha, Omaha, Nebraska.
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3
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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] [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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4
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Szlachcic WJ, Letai KC, Scavuzzo MA, Borowiak M. Deep into the niche: Deciphering local endoderm-microenvironment interactions in development, homeostasis, and disease of pancreas and intestine. Bioessays 2023; 45:e2200186. [PMID: 36871153 DOI: 10.1002/bies.202200186] [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: 09/16/2022] [Revised: 01/11/2023] [Accepted: 01/23/2023] [Indexed: 03/06/2023]
Abstract
Unraveling molecular and functional heterogeneity of niche cells within the developing endoderm could resolve mechanisms of tissue formation and maturation. Here, we discuss current unknowns in molecular mechanisms underlying key developmental events in pancreatic islet and intestinal epithelial formation. Recent breakthroughs in single-cell and spatial transcriptomics, paralleled with functional studies in vitro, reveal that specialized mesenchymal subtypes drive the formation and maturation of pancreatic endocrine cells and islets via local interactions with epithelium, neurons, and microvessels. Analogous to this, distinct intestinal niche cells regulate both epithelial development and homeostasis throughout life. We propose how this knowledge can be used to progress research in the human context using pluripotent stem cell-derived multilineage organoids. Overall, understanding the interactions between the multitude of microenvironmental cells and how they drive tissue development and function could help us make more therapeutically relevant in vitro models.
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Affiliation(s)
- Wojciech J Szlachcic
- Institute of Molecular Biology and Biotechnology, Adam Mickiewicz University, Poznan, Poland
| | - Katherine C Letai
- Department of Genetics and Genome Sciences, Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Marissa A Scavuzzo
- Department of Genetics and Genome Sciences, Case Western Reserve University School of Medicine, Cleveland, OH, USA
| | - Malgorzata Borowiak
- Institute of Molecular Biology and Biotechnology, Adam Mickiewicz University, Poznan, Poland
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5
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Chen J, Xu H, Tao W, Chen Z, Zhao Y, Han JDJ. Transformer for one stop interpretable cell type annotation. Nat Commun 2023; 14:223. [PMID: 36641532 PMCID: PMC9840170 DOI: 10.1038/s41467-023-35923-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 20.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 01/09/2023] [Indexed: 01/15/2023] Open
Abstract
Consistent annotation transfer from reference dataset to query dataset is fundamental to the development and reproducibility of single-cell research. Compared with traditional annotation methods, deep learning based methods are faster and more automated. A series of useful single cell analysis tools based on autoencoder architecture have been developed but these struggle to strike a balance between depth and interpretability. Here, we present TOSICA, a multi-head self-attention deep learning model based on Transformer that enables interpretable cell type annotation using biologically understandable entities, such as pathways or regulons. We show that TOSICA achieves fast and accurate one-stop annotation and batch-insensitive integration while providing biologically interpretable insights for understanding cellular behavior during development and disease progressions. We demonstrate TOSICA's advantages by applying it to scRNA-seq data of tumor-infiltrating immune cells, and CD14+ monocytes in COVID-19 to reveal rare cell types, heterogeneity and dynamic trajectories associated with disease progression and severity.
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Affiliation(s)
- Jiawei Chen
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Center for Quantitative Biology (CQB), Peking University, Beijing, 100871, China
| | - Hao Xu
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Center for Quantitative Biology (CQB), Peking University, Beijing, 100871, China
| | - Wanyu Tao
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Center for Quantitative Biology (CQB), Peking University, Beijing, 100871, China
| | - Zhaoxiong Chen
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Center for Quantitative Biology (CQB), Peking University, Beijing, 100871, China
| | - Yuxuan Zhao
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Center for Quantitative Biology (CQB), Peking University, Beijing, 100871, China
| | - Jing-Dong J Han
- Peking-Tsinghua Center for Life Sciences, Academy for Advanced Interdisciplinary Studies, Center for Quantitative Biology (CQB), Peking University, Beijing, 100871, China.
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6
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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] [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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7
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Rodriguez UA, Dahiya S, Raymond ML, Gao C, Martins-Cargill CP, Piganelli JD, Gittes GK, Hu J, Esni F. Focal adhesion kinase-mediated signaling controls the onset of pancreatic cell differentiation. Development 2022; 149:276452. [PMID: 36017799 PMCID: PMC9482336 DOI: 10.1242/dev.200761] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 08/02/2022] [Indexed: 11/20/2022]
Abstract
Signals from the endothelium play a pivotal role in pancreatic lineage commitment. As such, the fate of the epithelial cells relies heavily on the spatiotemporal recruitment of the endothelial cells to the embryonic pancreas. Although it is known that VEGFA secreted by the epithelium recruits the endothelial cells to the specific domains within the developing pancreas, the mechanism that controls the timing of such recruitment is poorly understood. Here, we have assessed the role of focal adhesion kinase (FAK) in mouse pancreatic development based on our observation that the presence of the enzymatically active form of FAK (pFAK) in the epithelial cells is inversely correlated with vessel recruitment. To study the role of FAK in the pancreas, we conditionally deleted the gene encoding focal adhesion kinase in the developing mouse pancreas. We found that homozygous deletion of Fak (Ptk2) during embryogenesis resulted in ectopic epithelial expression of VEGFA, abnormal endothelial recruitment and a delay in endocrine and acinar cell differentiation. The heterozygous mutants were born with no pancreatic phenotype but displayed gradual acinar atrophy due to cell polarity defects in exocrine cells. Together, our findings imply a role for FAK in controlling the timing of pancreatic lineage commitment and/or differentiation in the embryonic pancreas by preventing endothelial recruitment to the embryonic pancreatic epithelium. Summary: Conditional inactivation of focal adhesion kinase in the developing pancreas reveals its role in controlling the timing of pancreatic lineage commitment and/or differentiation by preventing endothelial recruitment to the embryonic epithelium.
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Affiliation(s)
- Uylissa A. Rodriguez
- Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center 1 Department of Surgery, Division of Pediatric General and Thoracic Surgery , , Pittsburgh, PA 15244 , USA
| | - Shakti Dahiya
- Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center 1 Department of Surgery, Division of Pediatric General and Thoracic Surgery , , Pittsburgh, PA 15244 , USA
| | - Michelle L. Raymond
- Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center 1 Department of Surgery, Division of Pediatric General and Thoracic Surgery , , Pittsburgh, PA 15244 , USA
| | - Chenxi Gao
- University of Pittsburgh 2 Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition , , Pittsburgh, PA 15244 , USA
| | - Christina P. Martins-Cargill
- Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center 1 Department of Surgery, Division of Pediatric General and Thoracic Surgery , , Pittsburgh, PA 15244 , USA
| | - Jon D. Piganelli
- Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center 1 Department of Surgery, Division of Pediatric General and Thoracic Surgery , , Pittsburgh, PA 15244 , USA
| | - George K. Gittes
- Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center 1 Department of Surgery, Division of Pediatric General and Thoracic Surgery , , Pittsburgh, PA 15244 , USA
| | - Jing Hu
- University of Pittsburgh 2 Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition , , Pittsburgh, PA 15244 , USA
| | - Farzad Esni
- Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center 1 Department of Surgery, Division of Pediatric General and Thoracic Surgery , , Pittsburgh, PA 15244 , USA
- University of Pittsburgh 3 Department of Developmental Biology , , Pittsburgh, PA 15244 , USA
- UPMC Hillman Cancer Center 4 , Pittsburgh, PA 15123 , USA
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8
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Identification and implication of tissue-enriched ligands in epithelial-endothelial crosstalk during pancreas development. Sci Rep 2022; 12:12498. [PMID: 35864120 PMCID: PMC9304391 DOI: 10.1038/s41598-022-16072-y] [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] [Received: 04/15/2022] [Accepted: 07/04/2022] [Indexed: 11/17/2022] Open
Abstract
Development of the pancreas is driven by an intrinsic program coordinated with signals from other cell types in the epithelial environment. These intercellular communications have been so far challenging to study because of the low concentration, localized production and diversity of the signals released. Here, we combined scRNAseq data with a computational interactomic approach to identify signals involved in the reciprocal interactions between the various cell types of the developing pancreas. This in silico approach yielded 40,607 potential ligand-target interactions between the different main pancreatic cell types. Among this vast network of interactions, we focused on three ligands potentially involved in communications between epithelial and endothelial cells. BMP7 and WNT7B, expressed by pancreatic epithelial cells and predicted to target endothelial cells, and SEMA6D, involved in the reverse interaction. In situ hybridization confirmed the localized expression of Bmp7 in the pancreatic epithelial tip cells and of Wnt7b in the trunk cells. On the contrary, Sema6d was enriched in endothelial cells. Functional experiments on ex vivo cultured pancreatic explants indicated that tip cell-produced BMP7 limited development of endothelial cells. This work identified ligands with a restricted tissular and cellular distribution and highlighted the role of BMP7 in the intercellular communications contributing to vessel development and organization during pancreas organogenesis.
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9
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BRAFV600E Induction in Thyrocytes Triggers Important Changes in the miRNAs Content and the Populations of Extracellular Vesicles Released in Thyroid Tumor Microenvironment. Biomedicines 2022; 10:biomedicines10040755. [PMID: 35453506 PMCID: PMC9029139 DOI: 10.3390/biomedicines10040755] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 03/17/2022] [Accepted: 03/19/2022] [Indexed: 12/12/2022] Open
Abstract
Papillary thyroid cancer (PTC) is the most common endocrine malignancy for which diagnosis and recurrences still challenge clinicians. New perspectives to overcome these issues could come from the study of extracellular vesicle (EV) populations and content. Here, we aimed to elucidate the heterogeneity of EVs circulating in the tumor and the changes in their microRNA content during cancer progression. Using a mouse model expressing BRAFV600E, we isolated and characterized EVs from thyroid tissue by ultracentrifugations and elucidated their microRNA content by small RNA sequencing. The cellular origin of EVs was investigated by ExoView and that of deregulated EV-microRNA by qPCR on FACS-sorted cell populations. We found that PTC released more EVs bearing epithelial and immune markers, as compared to the healthy thyroid, so that changes in EV-microRNAs abundance were mainly due to their deregulated expression in thyrocytes. Altogether, our work provides a full description of in vivo-derived EVs produced by, and within, normal and cancerous thyroid. We elucidated the global EV-microRNAs signature, the dynamic loading of microRNAs in EVs upon BRAFV600E induction, and their cellular origin. Finally, we propose that thyroid tumor-derived EV-microRNAs could support the establishment of a permissive immune microenvironment.
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10
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Glorieux L, Sapala A, Willnow D, Moulis M, Salowka A, Darrigrand JF, Edri S, Schonblum A, Sakhneny L, Schaumann L, Gómez HF, Lang C, Conrad L, Guillemot F, Levenberg S, Landsman L, Iber D, Pierreux CE, Spagnoli FM. Development of a 3D atlas of the embryonic pancreas for topological and quantitative analysis of heterologous cell interactions. Development 2022; 149:274013. [PMID: 35037942 PMCID: PMC8918780 DOI: 10.1242/dev.199655] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 12/20/2021] [Indexed: 01/05/2023]
Abstract
Generating comprehensive image maps, while preserving spatial three-dimensional (3D) context, is essential in order to locate and assess quantitatively specific cellular features and cell-cell interactions during organ development. Despite recent advances in 3D imaging approaches, our current knowledge of the spatial organization of distinct cell types in the embryonic pancreatic tissue is still largely based on two-dimensional histological sections. Here, we present a light-sheet fluorescence microscopy approach to image the pancreas in three dimensions and map tissue interactions at key time points in the mouse embryo. We demonstrate the utility of the approach by providing volumetric data, 3D distribution of three main cellular components (epithelial, mesenchymal and endothelial cells) within the developing pancreas, and quantification of their relative cellular abundance within the tissue. Interestingly, our 3D images show that endocrine cells are constantly and increasingly in contact with endothelial cells forming small vessels, whereas the interactions with mesenchymal cells decrease over time. These findings suggest distinct cell-cell interaction requirements for early endocrine cell specification and late differentiation. Lastly, we combine our image data in an open-source online repository (referred to as the Pancreas Embryonic Cell Atlas). Summary: A light-sheet fluorescence microscopy approach is used for 3D imaging of the pancreas and to quantitatively map its interactions with surrounding tissues at key development time points in the mouse embryo.
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Affiliation(s)
- Laura Glorieux
- Cell Biology Unit, de Duve Institute, UCLouvain, Woluwe 1200, Belgium
| | - Aleksandra Sapala
- Department of Biosystems Science and Engineering (D-BSSE), ETH Zurich, Basel 4058, Switzerland.,Swiss Institute of Bioinformatics (SIB), Basel 4058, Switzerland
| | - David Willnow
- Centre for Stem Cell and Regenerative Medicine, King's College London, Great Maze Pond, London SE1 9RT, UK
| | - Manon Moulis
- Cell Biology Unit, de Duve Institute, UCLouvain, Woluwe 1200, Belgium
| | - Anna Salowka
- Centre for Stem Cell and Regenerative Medicine, King's College London, Great Maze Pond, London SE1 9RT, UK
| | - Jean-Francois Darrigrand
- Centre for Stem Cell and Regenerative Medicine, King's College London, Great Maze Pond, London SE1 9RT, UK
| | - Shlomit Edri
- Department of Biomedical Engineering, Technion-Israel Institute of Technology, Haifa 3200003, Israel
| | - Anat Schonblum
- Department of Cell and Developmental Biology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Lina Sakhneny
- Department of Cell and Developmental Biology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Laura Schaumann
- Department of Biosystems Science and Engineering (D-BSSE), ETH Zurich, Basel 4058, Switzerland.,Swiss Institute of Bioinformatics (SIB), Basel 4058, Switzerland
| | - Harold F Gómez
- Department of Biosystems Science and Engineering (D-BSSE), ETH Zurich, Basel 4058, Switzerland.,Swiss Institute of Bioinformatics (SIB), Basel 4058, Switzerland
| | - Christine Lang
- Department of Biosystems Science and Engineering (D-BSSE), ETH Zurich, Basel 4058, Switzerland.,Swiss Institute of Bioinformatics (SIB), Basel 4058, Switzerland
| | - Lisa Conrad
- Department of Biosystems Science and Engineering (D-BSSE), ETH Zurich, Basel 4058, Switzerland.,Swiss Institute of Bioinformatics (SIB), Basel 4058, Switzerland
| | | | - Shulamit Levenberg
- Department of Biomedical Engineering, Technion-Israel Institute of Technology, Haifa 3200003, Israel
| | - Limor Landsman
- Department of Cell and Developmental Biology, Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv 6997801, Israel
| | - Dagmar Iber
- Department of Biosystems Science and Engineering (D-BSSE), ETH Zurich, Basel 4058, Switzerland.,Swiss Institute of Bioinformatics (SIB), Basel 4058, Switzerland
| | | | - Francesca M Spagnoli
- Centre for Stem Cell and Regenerative Medicine, King's College London, Great Maze Pond, London SE1 9RT, UK
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11
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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] [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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12
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Goddi A, Schroedl L, Brey EM, Cohen RN. Laminins in metabolic tissues. Metabolism 2021; 120:154775. [PMID: 33857525 DOI: 10.1016/j.metabol.2021.154775] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Revised: 03/13/2021] [Accepted: 04/08/2021] [Indexed: 12/16/2022]
Abstract
Laminins are extracellular matrix proteins that reside in the basement membrane and provide structural support in addition to promoting cellular adhesion and migration. Through interactions with cell surface receptors, laminins stimulate intracellular signaling cascades which direct specific survival and differentiation outcomes. In metabolic tissues such as the pancreas, adipose, muscle, and liver, laminin isoforms are expressed in discrete temporal and spatial patterns suggesting that certain isoforms may support the development and function of particular metabolic cell types. This review focuses on the research to date detailing the expression of laminin isoforms, their potential function, as well as known pathways involved in laminin signaling in metabolic tissues. We will also discuss the current biomedical therapies involving laminins in these tissues in addition to prospective applications, with the goal being to encourage future investigation of laminins in the context of metabolic disease.
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Affiliation(s)
- Anna Goddi
- Committee on Molecular Metabolism and Nutrition, The University of Chicago, 900 East 57th St, Chicago, IL 60637, USA
| | - Liesl Schroedl
- Pritzker School of Medicine, The University of Chicago, 924 E 57th St, Chicago, IL 60637, USA
| | - Eric M Brey
- Department of Biomedical Engineering and Chemical Engineering, The University of Texas at San Antonio, One UTSA Circle, San Antonio, TX 78249, USA
| | - Ronald N Cohen
- Committee on Molecular Metabolism and Nutrition, The University of Chicago, 900 East 57th St, Chicago, IL 60637, USA; Section of Endocrinology, Diabetes, and Metabolism, The University of Chicago, 5841 South Maryland Ave, Chicago, IL 60637, USA.
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13
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Huang D, Wang R. Exploring the mechanism of pancreatic cell fate decisions via cell-cell communication. MATHEMATICAL BIOSCIENCES AND ENGINEERING : MBE 2021; 18:2401-2424. [PMID: 33892552 DOI: 10.3934/mbe.2021122] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The endocrine and exocrine cells in pancreas originate initially from a group of apparently identical endoderm cells in the early gut. The endocrine and exocrine tissues are composed of islet/acinar and duct cells respectively. To explore the mechanism of pancreas cell fate decisions, we first construct a minimal mathematical model related to pancreatic regulations. The regulatory mechanism of acinar-to-islet cell conversion is revealed by bifurcation analysis of the model. In addition, Notch signaling is critical in determining the fate of endocrine and exocrine in the developing pancreas and it is a typical mediator of lateral inhibition which instructs adjacent cells to make different fate decisions. Next, we construct a multicellular model of cell-cell communication mediated by Notch signaling with trans-activation and cis-inhibition. The roles of Notch signaling in regulating fate decisions of endocrine and exocrine cells during the differentiation of pancreatic cells are explored. The results indicate that high (or low) level of Notch signaling drive cells to select the fate of exocrine (or endocrine) progenitor cells. The networks and the models presented here might be good candidates for providing qualitative mechanisms of pancreatic cell fate decisions. These results can also provide some insight on choosing perturbation strategies for further experimental analysis.
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Affiliation(s)
- Dasong Huang
- Department of Mathematics, Shanghai University, Shanghai 200444, China
| | - Ruiqi Wang
- Department of Mathematics, Shanghai University, Shanghai 200444, China
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14
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Geusz RJ, Wang A, Chiou J, Lancman JJ, Wetton N, Kefalopoulou S, Wang J, Qiu Y, Yan J, Aylward A, Ren B, Dong PDS, Gaulton KJ, Sander M. Pancreatic progenitor epigenome maps prioritize type 2 diabetes risk genes with roles in development. eLife 2021; 10:e59067. [PMID: 33544077 PMCID: PMC7864636 DOI: 10.7554/elife.59067] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Accepted: 01/18/2021] [Indexed: 12/13/2022] Open
Abstract
Genetic variants associated with type 2 diabetes (T2D) risk affect gene regulation in metabolically relevant tissues, such as pancreatic islets. Here, we investigated contributions of regulatory programs active during pancreatic development to T2D risk. Generation of chromatin maps from developmental precursors throughout pancreatic differentiation of human embryonic stem cells (hESCs) identifies enrichment of T2D variants in pancreatic progenitor-specific stretch enhancers that are not active in islets. Genes associated with progenitor-specific stretch enhancers are predicted to regulate developmental processes, most notably tissue morphogenesis. Through gene editing in hESCs, we demonstrate that progenitor-specific enhancers harboring T2D-associated variants regulate cell polarity genes LAMA1 and CRB2. Knockdown of lama1 or crb2 in zebrafish embryos causes a defect in pancreas morphogenesis and impairs islet cell development. Together, our findings reveal that a subset of T2D risk variants specifically affects pancreatic developmental programs, suggesting that dysregulation of developmental processes can predispose to T2D.
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Affiliation(s)
- Ryan J Geusz
- Department of Pediatrics, Pediatric Diabetes Research Center, University of California, San DiegoSan DiegoUnited States
- Department of Cellular & Molecular Medicine, University of California, San DiegoSan DiegoUnited States
- Sanford Consortium for Regenerative MedicineSan DiegoUnited States
- Biomedical Graduate Studies Program, University of California, San DiegoSan DiegoUnited States
| | - Allen Wang
- Department of Pediatrics, Pediatric Diabetes Research Center, University of California, San DiegoSan DiegoUnited States
- Department of Cellular & Molecular Medicine, University of California, San DiegoSan DiegoUnited States
- Sanford Consortium for Regenerative MedicineSan DiegoUnited States
| | - Joshua Chiou
- Department of Pediatrics, Pediatric Diabetes Research Center, University of California, San DiegoSan DiegoUnited States
- Biomedical Graduate Studies Program, University of California, San DiegoSan DiegoUnited States
| | - Joseph J Lancman
- Human Genetics Program, Sanford Burnham Prebys Medical Discovery InstituteSan DiegoUnited States
- Graduate School of Biomedical Sciences, Sanford Burnham Prebys Medical Discovery InstituteSan DiegoUnited States
| | - Nichole Wetton
- Department of Pediatrics, Pediatric Diabetes Research Center, University of California, San DiegoSan DiegoUnited States
- Department of Cellular & Molecular Medicine, University of California, San DiegoSan DiegoUnited States
- Sanford Consortium for Regenerative MedicineSan DiegoUnited States
| | - Samy Kefalopoulou
- Department of Pediatrics, Pediatric Diabetes Research Center, University of California, San DiegoSan DiegoUnited States
- Department of Cellular & Molecular Medicine, University of California, San DiegoSan DiegoUnited States
- Sanford Consortium for Regenerative MedicineSan DiegoUnited States
| | - Jinzhao Wang
- Department of Pediatrics, Pediatric Diabetes Research Center, University of California, San DiegoSan DiegoUnited States
- Department of Cellular & Molecular Medicine, University of California, San DiegoSan DiegoUnited States
- Sanford Consortium for Regenerative MedicineSan DiegoUnited States
| | - Yunjiang Qiu
- Department of Cellular & Molecular Medicine, University of California, San DiegoSan DiegoUnited States
| | - Jian Yan
- Department of Cellular & Molecular Medicine, University of California, San DiegoSan DiegoUnited States
| | - Anthony Aylward
- Department of Pediatrics, Pediatric Diabetes Research Center, University of California, San DiegoSan DiegoUnited States
| | - Bing Ren
- Department of Cellular & Molecular Medicine, University of California, San DiegoSan DiegoUnited States
- Ludwig Institute for Cancer ResearchSan DiegoUnited States
| | - P Duc Si Dong
- Human Genetics Program, Sanford Burnham Prebys Medical Discovery InstituteSan DiegoUnited States
- Graduate School of Biomedical Sciences, Sanford Burnham Prebys Medical Discovery InstituteSan DiegoUnited States
| | - Kyle J Gaulton
- Department of Pediatrics, Pediatric Diabetes Research Center, University of California, San DiegoSan DiegoUnited States
| | - Maike Sander
- Department of Pediatrics, Pediatric Diabetes Research Center, University of California, San DiegoSan DiegoUnited States
- Department of Cellular & Molecular Medicine, University of California, San DiegoSan DiegoUnited States
- Sanford Consortium for Regenerative MedicineSan DiegoUnited States
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15
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Abstract
The pancreas of adult mammals displays a branched structure which transports digestive enzymes produced in the distal acini through a tree-like network of ducts into the duodenum. In contrast to several other branched organs, its branching patterns are not stereotypic. Moreover, the branches do not grow from dichotomic splitting of an initial stem but rather from the formation of microlumen in a mass of cells. These lumen progressively assemble into a hyperconnected network that refines into a tree by the time of birth. We review the cell remodeling events and the molecular mechanisms governing pancreas branching, as well as the role of the surrounding tissues in this process. Furthermore, we draw parallels with other branched organs such as the salivary and mammary gland.
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Affiliation(s)
- Lydie Flasse
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany.
| | - Coline Schewin
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany
| | - Anne Grapin-Botton
- Max Planck Institute of Molecular Cell Biology and Genetics, Dresden, Germany; Cluster of Excellence Physics of Life, Technische Universität Dresden, Dresden, Germany; The Novo Nordisk Foundation Center for Stem Cell Biology, Copenhagen, Denmark.
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16
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Cozzitorto C, Mueller L, Ruzittu S, Mah N, Willnow D, Darrigrand JF, Wilson H, Khosravinia D, Mahmoud AA, Risolino M, Selleri L, Spagnoli FM. A Specialized Niche in the Pancreatic Microenvironment Promotes Endocrine Differentiation. Dev Cell 2020; 55:150-162.e6. [PMID: 32857951 PMCID: PMC7720791 DOI: 10.1016/j.devcel.2020.08.003] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 05/11/2020] [Accepted: 08/06/2020] [Indexed: 12/13/2022]
Abstract
The interplay between pancreatic epithelium and the surrounding microenvironment is pivotal for pancreas formation and differentiation as well as adult organ homeostasis. The mesenchyme is the main component of the embryonic pancreatic microenvironment, yet its cellular identity is broadly defined, and whether it comprises functionally distinct cell subsets is not known. Using genetic lineage tracing, transcriptome, and functional studies, we identified mesenchymal populations with different roles during pancreatic development. Moreover, we showed that Pbx transcription factors act within the mouse pancreatic mesenchyme to define a pro-endocrine specialized niche. Pbx directs differentiation of endocrine progenitors into insulin- and glucagon-positive cells through non-cell-autonomous regulation of ECM-integrin interactions and soluble molecules. Next, we measured functional conservation between mouse and human pancreatic mesenchyme by testing identified mesenchymal factors in an iPSC-based differentiation model. Our findings provide insights into how lineage-specific crosstalk between epithelium and neighboring mesenchymal cells underpin the generation of different pancreatic cell types.
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Affiliation(s)
- Corinna Cozzitorto
- Max-Delbrueck Center for Molecular Medicine, Robert-Roessle Strasse 10, Berlin 13125, Germany; Department of Ophthalmology & Department of Anatomy, Institute for Human Genetics, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Laura Mueller
- Max-Delbrueck Center for Molecular Medicine, Robert-Roessle Strasse 10, Berlin 13125, Germany; Centre for Stem Cell and Regenerative Medicine, King's College London, Great Maze Pond, London SE1 9RT, UK
| | - Silvia Ruzittu
- Max-Delbrueck Center for Molecular Medicine, Robert-Roessle Strasse 10, Berlin 13125, Germany; Centre for Stem Cell and Regenerative Medicine, King's College London, Great Maze Pond, London SE1 9RT, UK
| | - Nancy Mah
- Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany
| | - David Willnow
- Max-Delbrueck Center for Molecular Medicine, Robert-Roessle Strasse 10, Berlin 13125, Germany; Centre for Stem Cell and Regenerative Medicine, King's College London, Great Maze Pond, London SE1 9RT, UK
| | - Jean-Francois Darrigrand
- Centre for Stem Cell and Regenerative Medicine, King's College London, Great Maze Pond, London SE1 9RT, UK
| | - Heather Wilson
- Centre for Stem Cell and Regenerative Medicine, King's College London, Great Maze Pond, London SE1 9RT, UK
| | - Daniel Khosravinia
- Centre for Stem Cell and Regenerative Medicine, King's College London, Great Maze Pond, London SE1 9RT, UK
| | - Amir-Ala Mahmoud
- Program in Craniofacial Biology, Institute for Human Genetics, Eli and Edythe Broad Center of Regeneration Medicine & Stem Cell Research, Department of Orofacial Sciences & Department of Anatomy, University of California, San Francisco, 513 Parnassus Ave, HSW 710, San Francisco, CA 94143, USA
| | - Maurizio Risolino
- Program in Craniofacial Biology, Institute for Human Genetics, Eli and Edythe Broad Center of Regeneration Medicine & Stem Cell Research, Department of Orofacial Sciences & Department of Anatomy, University of California, San Francisco, 513 Parnassus Ave, HSW 710, San Francisco, CA 94143, USA
| | - Licia Selleri
- Program in Craniofacial Biology, Institute for Human Genetics, Eli and Edythe Broad Center of Regeneration Medicine & Stem Cell Research, Department of Orofacial Sciences & Department of Anatomy, University of California, San Francisco, 513 Parnassus Ave, HSW 710, San Francisco, CA 94143, USA
| | - Francesca M Spagnoli
- Max-Delbrueck Center for Molecular Medicine, Robert-Roessle Strasse 10, Berlin 13125, Germany; Centre for Stem Cell and Regenerative Medicine, King's College London, Great Maze Pond, London SE1 9RT, UK.
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17
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Development of pancreatic acini in embryos of the grass snake
Natrix natrix
(Lepidosauria, Serpentes). J Morphol 2019; 281:110-121. [DOI: 10.1002/jmor.21083] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Revised: 10/17/2019] [Accepted: 10/28/2019] [Indexed: 12/16/2022]
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