| 2006 |
Talpid3/KIAA0586 is absolutely required for both Gli repressor and activator functions in the intracellular Hedgehog pathway; Gli3 processing is abnormal in talpid3 mutant cells, though Gli3 can still translocate to the nucleus. The protein localizes to the cytoplasm. |
Genetic rescue experiments in chicken embryos, Gli3 processing assays, subcellular localization studies in mutant vs. wild-type cells |
Genes & development |
High |
16702409
|
| 2009 |
Talpid3/KIAA0586 is a centrosomal protein essential for primary cilia formation; in talpid3 mutant cells, basal bodies mature and dock is attempted but fail to dock with the apical membrane, are misorientated, and almost completely lack ciliary axonemes. A conserved coiled-coil domain region (exons 11-12) is required to rescue primary cilia formation and is sufficient for centrosomal localization. Marked changes in actin organisation were also detected in mutant cells. |
Immunofluorescence with anti-Talpid3 antibody, electron microscopy (ultrastructural analysis), rescue experiments with deletion constructs in talpid3 mutant embryos, antibody detection of Talpid3 at centrosome |
Development (Cambridge, England) |
High |
19144723
|
| 2014 |
Talpid3 assembles a ring-like structure at the extreme distal end of centrioles and is a component of a CP110-containing protein complex. Ablation of Talpid3 causes aberrant distribution of centriolar satellites and mislocalization of Rab8a. Expression of activated Rab8a suppresses cilia assembly defects provoked by Talpid3 depletion, indicating Talpid3 affects cilia formation through Rab8a recruitment and/or activation. Talpid3 is also required for centriolar satellite dispersal preceding ciliary vesicle formation. |
Co-immunoprecipitation to identify CP110 complex, siRNA depletion, immunofluorescence, ultrastructural analysis, rescue with activated Rab8a |
The Journal of cell biology |
High |
24421332
|
| 2016 |
PCM1 tethers the E3 ubiquitin ligase Mindbomb1 (Mib1) to centriolar satellites. In the absence of PCM1, Mib1 destabilizes Talpid3 through poly-ubiquitylation, suppressing cilium assembly. Loss of PCM1 blocks ciliogenesis by abrogating recruitment of ciliary vesicles associated with Talpid3-binding protein Rab8; this can be reversed by inactivating Mib1. Thus Mib1-mediated poly-ubiquitylation is a post-translational regulatory mechanism controlling Talpid3 abundance. |
PCM1 gene deletion in human cells, rescue with PCM1 domain constructs, ubiquitylation assays, Mib1 inactivation rescue experiments, immunofluorescence |
eLife |
High |
27146717
|
| 2014 |
Centrosomal protein Cep120 is asymmetrically localized to the daughter centriole through its physical interaction with Talpid3 (Ta3), another centrosomal protein. |
Co-immunoprecipitation (pulldown), immunofluorescence localization in cerebellar granule neuron progenitors |
PloS one |
Medium |
25251415
|
| 2017 |
Talpid3 interacts with PKA regulatory subunit PKARIIβ at centrioles; the centriolar localization region maps to the N-terminal region and the PKA-binding region to the C-terminal region of Ta3. Talpid3 mutation results in failure of PKARIIβ to localize at centrioles, leading to reduced Gli2 and Gli3 phosphorylation and impaired processing. Hedgehog signaling inhibits Gli2 and Gli3 phosphorylation by PKA in cilia. |
Co-immunoprecipitation (Talpid3–PKARIIβ interaction), immunofluorescence colocalization, domain mapping with N- and C-terminal constructs, phosphorylation assays in mutant vs. wild-type cells, Gli processing western blot |
Developmental biology |
Medium |
28673820
|
| 2019 |
CEP120 interacts with C2CD3 and Talpid3; loss of CEP120 impairs recruitment of C2CD3 and Talpid3 to the distal ends of centrioles, leading to defects in centriole appendage assembly and cilia formation. A disease-associated CEP120 mutant (I975S) has low affinity for C2CD3 binding and perturbs cilia assembly. |
Co-immunoprecipitation (CEP120 with C2CD3 and Talpid3), CRISPR/Cas9 CEP120 knockout in RPE1 cells, immunofluorescence, disease-mutant binding assay |
Scientific reports |
Medium |
30988386
|
| 2020 |
TALPID3 and ANKRD26 form a protein complex with cilia-gating component FBF1 at transition fibers. Co-depletion of TALPID3 and ANKRD26 specifically impairs recruitment of FBF1 to transition fibers, disrupting cilia gating. This function is conserved in both C. elegans (TALP-3/ANKR-26/DYF-19) and mammalian cells (TALPID3/ANKRD26/FBF1). |
Forward genetic screen in C. elegans, genetic epistasis (co-depletion), co-immunoprecipitation (complex formation), immunofluorescence (FBF1 localization at transition fibers) in both C. elegans and mammalian cells |
Nature communications |
High |
32366837
|
| 2011 |
In zebrafish talpid3 mutants (MZta3), primary and motile cilia are absent and Hedgehog signaling is aberrant. GFP-tagged Gli2a localizes to basal bodies in the absence of primary cilia, and Gli2a protein is aberrantly processed in MZta3 embryos as shown by western blot, demonstrating a cilia-dependent mechanism for Gli processing. |
Zinc-finger nuclease mutagenesis, GFP-Gli2a localization by live imaging, western blot for Gli2a processing, germline replacement for maternal depletion |
Development (Cambridge, England) |
High |
22028029
|
| 2011 |
Deletion of conserved exons 11-12 of KIAA0586/Talpid3 in mice results in embryos lacking primary cilia with face, neural tube, and left/right asymmetry defects. Conditional deletion in limb mesenchyme causes polydactyly and brachydactyly attributable to abnormal Sonic hedgehog and Indian hedgehog signaling. Talpid3 mutant mouse cells migrate more slowly than wild-type cells. |
Constitutive and conditional gene deletion in mice, primary cilia immunofluorescence, cell migration assays |
Development (Cambridge, England) |
High |
21750036
|
| 2013 |
TALPID3 is required for centrosomal migration to the apical surface prior to ciliogenesis in ependymal multiciliate cells; talpid3 ependymal cells develop multiple centrosomes but these fail to migrate to the apical cell surface, though axoneme formation was sometimes observed. TALPID3 is not directly required for de novo centriologenesis, multiciliated fate, or axoneme formation. |
Immunofluorescence for centrosome markers, electron microscopy of ependymal cells, analysis of FOXJ1 expression in talpid3 vs. wild-type chicken embryos |
Developmental dynamics |
Medium |
23613203
|
| 2015 |
KIAA0586 protein localizes to the basal body in human and mouse photoreceptors, and also in pericentriolar locations. Loss of TALPID3 function in animal models causes abnormal tissue polarity, centrosome length and orientation, and centriolar satellites. |
Immunofluorescence localization in human and mouse photoreceptors, animal model analysis (chicken and mouse), homozygosity mapping and whole-exome sequencing identifying splice site mutation |
eLife |
Medium |
26386247
|
| 2018 |
In zebrafish talpid3 mutant photoreceptors, the majority of photoreceptors lack outer segment development due to defects in basal body positioning and docking at the apical cell surface. Overexpression of constitutively active Rab8a rescues outer segment formation in talpid3 mutant photoreceptors, indicating Ta3's role in early ciliogenesis lies upstream of Rab8a activation in photoreceptors. |
Zebrafish talpid3 mutant analysis, immunofluorescence for Rab8a localization, constitutively active Rab8a rescue experiment, electroretinograms for functional assessment |
Scientific reports |
Medium |
29396404
|
| 2020 |
Talpid3 is localized to the mother centriole of radial glial cells (RGCs) and is required for their apical mitosis. Talpid3 associates with Ninein to regulate microtubule organization and maintain the integrity of adherens junctions to anchor RGCs. Genetic silencing of Talpid3 causes abnormal RGC delamination and impairs interkinetic nuclear migration in cell-autonomous and non-autonomous manners. |
Immunofluorescence localization, co-immunoprecipitation (Talpid3-Ninein interaction), genetic silencing (shRNA/conditional KO), adherens junction integrity assays, live imaging of nuclear migration |
Cell reports |
Medium |
33326788
|
| 2023 |
Conditional deletion of Talpid3 in muscle stem cells (MuSC) impairs muscle regeneration and self-renewal after injury. Single-cell transcriptomics identified deregulation of Hh and Wnt signaling pathways in TA3-depleted MuSC progeny. Pharmacological activation of Wnt (but not Smoothened/Hh pathway activation) restores muscle regeneration in TA3 conditional KO mice. |
Tamoxifen-inducible conditional deletion in MuSC, cytotoxic injury model, single-cell transcriptomics, pharmacological rescue with Wnt activator and Smo agonist (purmorphamine) |
Communications biology |
Medium |
37925530
|
| 2015 |
Cells derived from patients with biallelic KIAA0586 mutations show defective ciliogenesis and abnormal response to SHH-signaling activation. Centriolar maturation appeared unaffected in mutant cells, but an abnormal extended pattern of CEP290 (a centriolar satellite protein) was observed. Rescue of cilia defect with full-length wild-type KIAA0586 confirmed the causal link. Gli3 processing is abnormal in mutant cells. |
Patient-derived fibroblast ciliogenesis assay, SHH stimulation assay, rescue with wild-type KIAA0586, immunofluorescence for CEP290 pattern, Gli3 processing western blot |
American journal of human genetics |
Medium |
26166481
|