Cystic fibrosis: insights from zebrafish models

Area of Science:

• Genetics and Molecular Biology
• Immunology
• Developmental Biology

Background:

• Cystic fibrosis (CF) is a severe genetic disorder caused by CFTR gene mutations, leading to defective ion transport, thick mucus, and multi-organ dysfunction.
• The complex interplay of CFTR dysfunction, chronic infection, and inflammation presents significant therapeutic challenges.
• Animal models are essential for understanding CF pathogenesis and accelerating drug discovery.

Purpose of the Study:

• To review the relevance of zebrafish (Danio rerio) as a preclinical model for cystic fibrosis research.
• To highlight the advantages of zebrafish, including its immune system and optical transparency, for studying CF.
• To discuss the potential of zebrafish models for therapeutic strategy development in CF.

Main Methods:

• Review of existing literature on zebrafish as a model for CF.
• Summary of insights gained from Cftr-deficient zebrafish models.
• Discussion of in vivo visualization techniques enabled by zebrafish's optical transparency.

Main Results:

• Zebrafish models provide insights into increased susceptibility to CF-relevant pathogens.
• Cftr-deficient zebrafish models illuminate disease mechanisms in the pancreas and reproductive system.
• These models reveal neutrophil-driven inflammation characteristic of CF and enable in vivo visualization of immune responses.

Conclusions:

• Zebrafish are a powerful and complementary preclinical model for CF research.
• The optical transparency and conserved immunity of zebrafish facilitate in vivo studies of CF pathogenesis.
• Zebrafish models hold significant potential for identifying and validating novel CF therapies, particularly for lung pathology.