NRF2 and Primary Cilia: An Emerging Partnership

Area of Science:

• Cell Biology
• Molecular Biology
• Developmental Biology

Background:

• Primary cilia are crucial signaling structures involved in various cellular processes.
• Dysfunction of primary cilia is linked to diseases like cancer and ciliopathies.
• Nuclear factor erythroid 2-related factor 2 (NRF2) is a key regulator of cellular stress responses.

Purpose of the Study:

• To review the functional connections between primary cilia and NRF2.
• To reconcile contradictory findings regarding NRF2's role in ciliogenesis and Hedgehog signaling.
• To discuss the implications of the NRF2-primary cilia interplay in human health and disease.

Main Methods:

• Literature review of recent studies on primary cilia and NRF2.
• Analysis of experimental data linking NRF2 to ciliogenesis and autophagy.
• Synthesis of evidence to explain discrepancies in NRF2's effects on cilia-dependent pathways.

Main Results:

• Primary cilia, via autophagy, downregulate NRF2 activity.
• NRF2 transcriptionally regulates genes involved in ciliogenesis and Hedgehog signaling.
• Conflicting reports exist on whether NRF2 stimulates or inhibits ciliogenesis and Hedgehog signaling.

Conclusions:

• The relationship between primary cilia and NRF2 is complex and reciprocal.
• Understanding this interplay is crucial for addressing diseases associated with cilia dysfunction and oxidative stress.
• Further research is needed to fully elucidate the mechanisms and consequences of NRF2-cilia interactions.