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Updated: Jan 29, 2026
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Blastomere Explants to Test for Cell Fate Commitment During Embryonic Development
Published on: January 26, 2013
15.8K
Defining multistep cell fate decision pathways during pancreatic development at single-cell resolution.
Xin-Xin Yu1,2, Wei-Lin Qiu1,3, Liu Yang1,2
1Ministry of Education Key Laboratory of Cell Proliferation and Differentiation, College of Life Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, Beijing, China.
The EMBO Journal
|February 10, 2019
Summary
This study deciphers pancreatic cell development using single-cell RNA sequencing, revealing new insights into islet alpha- and beta-cell lineage allocation and the ERK pathway
Area of Science:
- Developmental Biology
- Genomics
- Cell Biology
Background:
- Organogenesis involves complex, coordinated cell fate choices.
- Pancreatic lineage development, especially in solid organs, remains incompletely understood.
Purpose of the Study:
- To delineate developmental trajectories and regulatory mechanisms of pancreatic cell lineages.
- To identify novel programs in early islet alpha- and beta-cell development.
- To investigate the role of the ERK pathway in pancreatic differentiation.
Main Methods:
- Single-cell RNA sequencing of mouse pancreatic cells from embryonic stages E9.5-E17.5.
- Utilized genetically modified reporter mouse strains for cell sorting.
- Analyzed developmental pathways of exocrine, endocrine, and progenitor populations.
Main Results:
- Deciphered developmental trajectories for exocrine and endocrine pancreatic lineages.
- Identified previously undefined programs for early islet alpha- and beta-cell lineage allocation.
- Discovered the developmental pathway for the first wave of alpha-cell generation.
- Demonstrated ERK pathway repression is crucial for alpha- and beta-cell differentiation.
Conclusions:
- Provides key insights into cell fate choice and commitment during pancreatic organogenesis.
- Offers a valuable resource for guiding in vitro induction of functional islet cells from stem cells.
- Highlights the critical role of the ERK pathway in directing pancreatic endocrine differentiation.
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