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Sox9: a master regulator of the pancreatic program
1The Danish Stem Cell Center (DanStem), University of Copenhagen, Panum Institute, Blegdamsvej 3B, DK-2200, Copenhagen N, Denmark.
The Review of Diabetic Studies : RDS
|August 23, 2014
Summary
Sox9 is crucial for pancreas development and function, regulating progenitor cells, endocrine differentiation, and ductal identity. Its role extends to initiating pancreatic cancer, highlighting its multifaceted importance.
Area of Science:
- Developmental Biology
- Endocrinology
- Cancer Biology
Background:
- The transcription factor Sox9 is recognized for its critical roles in embryonic pancreas development and mature organ homeostasis.
- Initial insights into Sox9's function came from studying campomelic dysplasia, a Sox9 haploinsufficiency syndrome, but mouse models have been key to understanding its mechanisms.
Purpose of the Study:
- To elucidate the multifaceted roles of Sox9 in pancreatic development, homeostasis, and disease.
- To review the mechanistic understanding of Sox9 functions gained from loss-of-function and lineage tracing mouse models.
Main Methods:
- Analysis of Sox9 haploinsufficiency syndrome in patients.
- Generation and analysis of transgenic mouse models, including loss-of-function and lineage tracing studies.
Main Results:
- Sox9 maintains multipotent and bipotent pancreatic progenitors.
- Sox9 is essential for initiating endocrine differentiation and maintaining pancreatic ductal identity.
- Sox9 has been identified as a key factor in the initiation of pancreatic cancer.
Conclusions:
- Sox9 plays indispensable roles throughout pancreatic development and in the postnatal organ.
- Sox9 interacts with other transcription factors and signaling pathways (e.g., Fgf, Notch) to regulate pancreatic cell fate.
- Further research is needed to address current controversies and explore future avenues regarding Sox9 function in healthy, injured, and cancerous adult pancreas.
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