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Polo-Like Kinase 3 Appears Dispensable for Normal Retinal Development Despite Robust Embryonic Expression
Jillian J Goetz1, Lauren A Laboissonniere1, Andrea K Wester1
1Department of Genetics, Development and Cell Biology, Iowa State University, Ames, Iowa, United States of America.
Plos One
|March 8, 2016
Summary
Polo-like kinase 3 (Plk3) is expressed in developing retinal cells. Plk3 deficiency did not alter retinal morphology but revealed gene expression changes, suggesting a role in retinal development.
Area of Science:
- Developmental Biology
- Neuroscience
- Genetics
Background:
- Retinogenesis involves generating diverse cell types from progenitor cells.
- Single-cell transcriptomics identified polo-like kinase 3 (Plk3) as a candidate gene in early retinal neuron development.
- Plk3 expression correlates with cell cycle exit during retinal development.
Purpose of the Study:
- To investigate the role of Plk3 in retinal development.
- To analyze the morphological and transcriptomic consequences of Plk3 deficiency in the mouse retina.
Main Methods:
- Generation and analysis of Plk3-deficient (Plk3-KO) mice.
- Immunohistochemistry and in situ hybridization to assess retinal morphology.
- Microarray gene expression profiling to analyze transcriptomic changes throughout retinal development.
Main Results:
- No consistent morphological changes in retinogenesis were observed in Plk3-KO mice.
- Microarray analysis identified potential candidate genes with altered expression in Plk3-KO retinas.
- Plk3 expression is detected as cells exit the cell cycle.
Conclusions:
- Plk3 deficiency does not cause overt morphological defects in the developing retina.
- Loss of Plk3 impacts gene expression profiles, indicating a potential regulatory role.
- Further research is needed to elucidate the functional connection between Plk3 and altered gene expression in retinogenesis.

