ArticleJournal of clinical laboratory analysis2025
Coordination of IFT20 With Other IFT Components Is Required for Ciliogenesis.
Article in Journal of clinical laboratory analysis, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundPrimary cilia are organelles formed on the cell surface. They can act as cellular antennae to sense signals and play important roles in various biological processes. Abnormalities in primary cilia lead to a variety of diseases collectively known as ciliopathies. Intraflagellar transport protein 20 (IFT20) has been implicated in ciliogenesis.
methodsIFT20 knockout cell lines were established using the CRISPR-Cas9 gene editing technology. The GFP-IFT20 plasmid was constructed with the Gateway cloning system. Protein levels were detected via immunoblotting, and the localization of IFT20, acetylated α-tubulin, ARL13B, CP110, MKS3, IFT88, and IFT140 in wild-type and IFT20 knockout cells was examined by immunofluorescence microscopy. The fluorescence intensities were analyzed using ImageJ. Data quantifications and mass spectrometry results were analyzed using GraphPad Prism and Metascape.
resultsThe IFT20 deficiency impaired ciliogenesis and reduced cilium length. IFT20 depletion did not affect the removal of centriolar coiled-coil protein 110 (CP110) from the mother centriole or the recruitment of Meckel-Gruber syndrome type 3 (MKS3) to the transition zone. Mass spectrometry analysis revealed that proteins interacting with IFT20 were mainly IFT components. IFT20 knockout decreased the levels of both IFT88 and IFT140, and abrogated IFT88 localization at the basal body and ciliary axoneme. IFT20 knockout also impaired IFT140 localization at the ciliary axoneme but did not affect its localization at the basal body.
conclusionsIFT20 is involved in ciliogenesis by regulating the level and localization of other IFT proteins and may have important implications in ciliopathies and related diseases.
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