1001 model organisms to study cilia and flagella

Area of Science:

• Cell Biology
• Genetics
• Evolutionary Biology

Background:

• Cilia and flagella are essential eukaryotic organelles involved in cellular sensing, motility, and fluid transport.
• Defects in cilia and flagella lead to a spectrum of human diseases known as ciliopathies, characterized by diverse clinical features and complex genetic causes.
• Understanding the fundamental biology of these organelles is critical for deciphering the mechanisms underlying ciliopathies.

Purpose of the Study:

• To review the utility of diverse model organisms in elucidating cilia and flagella biology.
• To highlight how different species aid in understanding cilia composition, assembly, function, and disease mechanisms.
• To emphasize the conserved nature of cilia and flagella across eukaryotic evolution.

Main Methods:

• Review of existing literature on cilia and flagella research.
• Comparative analysis of model organisms (e.g., Chlamydomonas, mouse, zebrafish, Xenopus, C. elegans, Drosophila, Paramecium, Tetrahymena, Trypanosoma, Leishmania).
• Examination of how each model system contributes to understanding specific aspects of cilia and flagella biology, including genetic disease modeling.

Main Results:

• Pioneering studies in Chlamydomonas linked cilia to genetic diseases.
• Multicellular organisms and protists offer unique advantages for studying cilia and flagella.
• Specific model organisms, like trypanosomes, are effective for assessing genes involved in ciliary motility defects (e.g., primary ciliary dyskinesia).

Conclusions:

• A comprehensive understanding of cilia and flagella biology requires integrating knowledge from various model systems.
• Model organisms are indispensable tools for dissecting the molecular composition, assembly, function, and evolutionary conservation of cilia and flagella.
• Insights gained from model organisms are crucial for understanding the etiology and potential therapeutic strategies for ciliopathies.