A Specialized Niche in the Pancreatic Microenvironment Promotes Endocrine Differentiation
Open accessAbstract
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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The pancreatic mesenchyme is essential for proper lineage formation.
“Given the essential role of the pancreatic mesenchyme for proper lineage formation [49, 57], Tbx3 was also deleted in this compartment.”
From TBX3 is dynamically expressed in pancreatic organogenesis and fine-tunes regeneration (2023) · cites this paper as [57]
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TBX3 is dynamically expressed in pancreatic organogenesis and fine-tunes regeneration
Melzer, M. K., Schirge, S., Gout, J., Arnold, F., Srinivasan, D., Burtscher, I., Allgöwer, C., Mulaw, M., Zengerling, F., Günes, C., et al. (2023) · BMC Biology · doi:10.1186/s12915-023-01553-x · Cited by 5 · see citing works
“Given the essential role of the pancreatic mesenchyme for proper lineage formation [49, 57], Tbx3 was also deleted in this compartment.”
Background
- Authors
- Cozzitorto, C., Mueller, L., Ruzittu, S., Mah, N., Willnow, D., Darrigrand, J.-F., Wilson, H., Khosravinia, D., Mahmoud, A.-A., Risolino, M., Selleri, L., & Spagnoli, F. M.
- Affiliations
- University of California, San Francisco (US)
- King's College London (GB)
- Charité – Universitätsmedizin Berlin (DE)
- Corresponding author
- Spagnoli, Francesca M.
- ORCID
- Venue
- Developmental Cell
- Publisher
- Elsevier BV
- Published
- 2020-10
- Volume
- 55
- Issue
- 2
- Pages
- 150-162.e6
- ISSN
- 1534-5807 (ISSN-L)
- PMC
- PMC7720791
- OpenAlex
- W3080447055
- Cited by
- 54
- References
- 0
- Citations by year
- 2026: 8 · 2025: 8 · 2024: 7 · 2023: 7 · 2022: 9 · 2021: 14 · 2020: 1
- FWCI
- 7.08
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Licence
- Locations
- Developmental Cell (publishedVersion)
- PubMed (publishedVersion)
- Europe PMC (PubMed Central) (acceptedVersion)
- PubMed Central (acceptedVersion)
- MDC Repository (Max-Delbrueck-Center for Molecular Medicine) (submittedVersion)
- eScholarship (California Digital Library) (submittedVersion)
- Research Portal (King's College London) (submittedVersion, cc-by-nc-nd)
- Funders
- National Institutes of Health (R01 HD061403)
- European Research Council (EFSD /AZ, 641036)
- Juvenile Diabetes Research Foundation United States of America (1-INO-2018-634-A-N)
- H2020 Future and Emerging Technologies (800981)
- European Commission
- Horizon 2020
- Helmholtz Association
- Horizon 2020 Framework Programme
- Topics
- Health Sciences › Medicine › Surgery › Pancreatic function and diabetes
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
- Health Sciences › Medicine › Oncology › Pancreatic and Hepatic Oncology Research
- Keywords
- endocrine differentiation, endocrine progenitors, insulin, glucagon, non-cell-autonomous regulation, pancreatic development, iPSC differentiation
- MeSH terms
- Animals, Cell Differentiation, Endocrine System, Epithelium, Humans, Mesoderm, Mice, Transgenic, Pancreas, Gene Expression Regulation, Developmental, Organogenesis, Mesenchymal Stem Cells
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