A transcriptomic roadmap to α- and β-cell differentiation in the embryonic pancreas

Léon van Gurp, Mauro J Muraro, Tim Dielen, Lina Seneby, Gitanjali Dharmadhikari, Gerard Gradwohl, Alexander van Oudenaarden, Eelco J P de Koning

Research output: Contribution to journal/periodicalArticleScientificpeer-review

Abstract

During pancreatic development, endocrine cells appear from the pancreatic epithelium when Neurog3-positive cells delaminate and differentiate into α-, β-, γ- and δ-cells. The mechanisms involved in this process are still incompletely understood. We characterized the temporal, lineage-specific developmental programs during pancreatic development by sequencing the transcriptome of thousands of individual pancreatic cells from E12.5 to E18.5 in mice, and identified all known cell types that are present in the embryonic pancreas, but focused specifically on α- and β-cell differentiation by enrichment of a MIP-GFP reporter. We characterized transcriptomic heterogeneity in the tip domain based on proliferation, and characterized two endocrine precursor clusters marked by expression of Neurog3 and Fev Pseudotime analysis revealed specific branches for developing α- and β-cells, which allowed identification of specific gene regulation patterns. These include some known and many previously unreported genes that appear to define pancreatic cell fate transitions. This resource allows dynamic profiling of embryonic pancreas development at single cell resolution and reveals novel gene signatures during pancreatic differentiation into α- and β-cells.

Original languageEnglish
JournalDevelopment (Cambridge)
Volume146
Issue number12
DOIs
Publication statusPublished - 24 Jun 2019

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