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Elucidating the function of primary cilia by conditional gene inactivation
Thomas Hiesberger1, Peter Igarashi
1Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, Texas 75390-856, USA. thomas.hiesberger@utsouthwestern.edu
Current Opinion in Nephrology and Hypertension
|June 3, 2005
Summary
Primary cilia function as critical flow sensors, regulating cell proliferation and transmitting signals via calcium influx. Conditional gene inactivation reveals their vital roles in physiology and organ development.
Area of Science:
- Cell Biology
- Developmental Biology
- Physiology
Background:
- Primary cilia are crucial cellular organelles with incompletely understood functions.
- Recent research focuses on experimental methods to decipher their roles.
Purpose of the Study:
- To review experimental approaches for determining primary cilia function.
- To highlight the impact of conditional gene inactivation on understanding cilia roles.
Main Methods:
- Conditional inactivation of genes essential for primary cilia formation.
- Analysis of morphological and physiological changes post-cilia loss.
Main Results:
- Primary cilia are identified as key fluid flow sensors.
- Renal primary cilia are vital for controlling cell proliferation.
- Primary cilia mediate signal transduction, including calcium influx.
Conclusions:
- Primary cilia play significant roles in fluid sensing and cell proliferation control.
- Their involvement in photoreceptor function is established.
- Further research using gene inactivation will uncover additional physiological and developmental roles.