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Analysis of Gene Function and Visualization of Cilia-Generated Fluid Flow in Kupffer's Vesicle
Published on: March 31, 2013
Wilson cell origin for kupffer's vesicle in the zebrafish
Rachel M Warga1, Donald A Kane1
1Department of Biological Sciences, Western Michigan University, Kalamazoo, Michigan.
Summary
Dorsal forerunners, originating from Wilson cells, form Kupffer's vesicle, crucial for left-right asymmetry determination in teleosts. These cells also contribute to notochord and muscle development during gastrulation.
Area of Science:
- Developmental biology
- Embryology
- Cell biology
Background:
- Bilaterally symmetric animals exhibit reproducible left-right asymmetries.
- In teleosts, Kupffer's vesicle is essential for determining left-right asymmetry.
- Kupffer's vesicle originates from dorsal forerunners during gastrulation.
Purpose of the Study:
- To investigate the origin and developmental role of dorsal forerunners in teleost gastrulation.
- To understand the cellular mechanisms underlying left-right asymmetry determination.
- To explore the contribution of specific cell populations to embryonic structures.
Main Methods:
- Observation of cell lineages and behaviors during teleost gastrulation.
- Analysis of gene expression patterns in precursor cells.
- Tracing cell fates and contributions to embryonic tissues.
Main Results:
- Wilson cells give rise to dorsal forerunners.
- Dorsal forerunners ingress, forming Kupffer's vesicle.
- Kupffer's vesicle precursors express endodermal genes and require Nodal signaling.
- Forerunner cells contribute to tail notochord and muscle.
Conclusions:
- The dorsal margin of the enveloping layer retains ancestral developmental roles.
- Dorsal forerunners play a key role in both endodermal development and laterality control.
- Kupffer's vesicle formation and function are linked to early embryonic patterning.
