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06:35
In vivo Evaluation of Mucociliary Clearance in Mice
Published on: December 18, 2020
Sensory functions of motile cilia and implication for bronchiectasis
Raksha Jain1, Cylen Javidan-Nejad, Jennifer Alexander-Brett
1Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA.
Frontiers in Bioscience (Scholar Edition)
|December 29, 2011
Summary
Motile cilia possess sensory proteins that detect environmental cues, and their dysfunction is linked to lung diseases like bronchiectasis in autosomal dominant polycystic kidney disease (ADPKD). This highlights cilia
Area of Science:
- Cell Biology
- Organelle Function
- Physiology
Background:
- Cilia are cell-surface organelles involved in motility (airway epithelia) and sensory detection (solitary cilia).
- Motile cilia contain sensory proteins detecting fluid flow, bitter taste, and sex hormones, with emerging links to disease.
- Polycystins (polycystin-1 and polycystin-2) are flow sensors in kidney cilia, mutated in autosomal dominant polycystic kidney disease (ADPKD).
Purpose of the Study:
- To explore the sensory functions of motile cilia and their relationship to human diseases.
- To investigate the role of polycystins and other sensory proteins in airway cilia and lung function.
- To understand how defective cilia signaling may lead to ciliopathies affecting the lungs.
Main Methods:
- Review of existing literature on cilia structure, function, and sensory protein identification.
- Analysis of computed tomography (CT) studies in patients with ADPKD to assess lung phenotypes.
- Correlation of sensory protein expression in motile cilia with potential roles in environmental sensing and disease pathogenesis.
Main Results:
- Polycystins are expressed in motile cilia, suggesting a sensory role in the lungs similar to their function in kidney cilia.
- CT studies in ADPKD patients show bronchiectasis, indicating a link between polycystin mutations and lung structural abnormalities.
- Motile cilia express a complex of sensory proteins, including polycystins, TRPV4, and receptors for bitter taste and sex hormones, indicating a role in environmental cue interpretation.
Conclusions:
- Motile cilia act as environmental sensors, integrating signals through protein complexes like polycystins.
- Dysfunctional cilia sensory signaling is implicated in ciliopathies, potentially causing lung diseases such as bronchiectasis.
- Further research into cilia sensory mechanisms is crucial for understanding and treating lung diseases associated with ciliopathies.
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