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Evaluating the Differentiation Capacity of Mouse Prostate Epithelial Cells Using Organoid Culture
Published on: November 22, 2019
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Lineage Specification from Prostate Progenitor Cells Requires Gata3-Dependent Mitotic Spindle Orientation
Maxwell E R Shafer1, Alana H T Nguyen2, Mathieu Tremblay1
1Rosalind and Morris Goodman Cancer Research Centre, McGill University, 1160 Pine Avenue West, Room 415, Montreal, QC H3A 1A3, Canada; Department of Biochemistry, McGill University, 3655 Promenade Sir William Osler, Montreal, QC H3G 1Y6, Canada.
Stem Cell Reports
|March 14, 2017
Summary
GATA3 regulates prostate development by controlling cell division orientation. Loss of GATA3 disrupts spindle orientation, leading to abnormal cell lineage expansion and tissue defects.
Area of Science:
- Cell biology
- Developmental biology
- Prostate cancer research
Background:
- Prostate development involves basal and luminal cell generation from bipotent basal cells.
- Spindle orientation's role in division symmetry and cell fate during prostate development is not fully understood.
- Upstream regulators of spindle orientation in prostate progenitors remain elusive.
Purpose of the Study:
- To investigate the role of GATA3 in prostate progenitor cell division and lineage specification.
- To identify upstream factors regulating mitotic spindle orientation in the developing prostate.
- To elucidate the mechanism by which GATA3 influences cell fate and tissue organization.
Main Methods:
- GATA3 expression analysis in prostate progenitor and luminal cells.
- Investigating the effects of GATA3 loss on PRKCZ localization and mitotic spindle orientation.
- Analyzing cell lineage dynamics and tissue morphology following GATA3 manipulation.
- Examining the impact of disrupting PRKCZ and PARD6B interactions on cell phenotypes.
Main Results:
- GATA3 is expressed in prostate basal progenitor and luminal cells.
- Loss of GATA3 causes PRKCZ mislocalization, leading to spindle randomization in progenitor divisions.
- Accumulation of proliferative intermediate progenitor cells and expansion of the luminal compartment observed.
- Disruption of PRKCZ-PARD6B interaction phenocopies spindle and cell lineage defects.
Conclusions:
- GATA3 plays a critical role in prostate lineage specification by regulating spindle orientation.
- Proper spindle orientation is essential for maintaining hierarchical cell lineage organization in the prostate.
- The GATA3-PRKCZ-PARD6B axis is crucial for controlling cell division asymmetry and prostate tissue development.
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