Abstract:
:The target-of-rapamycin (TOR) pathway is a major regulator of cellular growth, division, and metabolism by coupling growth and nutrient cues to fundamental processes such as translation and transcription. In vertebrate models, disruptions affecting components of the TOR pathway result in cilia size abnormalities and ciliopathic phenotypes such as renal cysts. However, the mechanism by which the TOR pathway influenced cilia length and function was unknown. Recent work from zebrafish, in conjunction with the green alga Chlamydomonas, demonstrates that TOR complex 1 (TORC1)-mediated cilia length control is achieved through translational regulation of ciliary precursors. Further, in zebrafish, aberrant TORC1 signaling leads to left-right asymmetric patterning defects due to inefficient ciliary motility and fluid flow generation in the Kupffer's vesicle, a conserved embryonic organ that establishes laterality. Together, such findings show the utility of a combinatorial zebrafish and Chlamydomonas approach to dissecting the mechanistic relationship between the cilium and signaling molecules such as TOR. Here, we describe tools, reagents, and methodologies for the manipulation of the TOR pathway and the analysis of cilia morphology and function in zebrafish and Chlamydomonas.
journal_name
Methods Enzymoljournal_title
Methods in enzymologyauthors
Yuan S,Zhao L,Sun Zdoi
10.1016/B978-0-12-397944-5.00009-2subject
Has Abstractpub_date
2013-01-01 00:00:00pages
159-89eissn
0076-6879issn
1557-7988pii
B978-0-12-397944-5.00009-2journal_volume
525pub_type
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