TUSC3

Cilia effects upon perturbation of TUSC3

Cilia number / % ciliated:

Decreased cilia number

Loss-of-function effect:

Unknown

Overexpression effect:

Unknown

Ciliogenesis screen results (3 screens)

• Wheway et al. 2015 (siRNA) [siRNA]: No effect PMID:26167766
• Breslow et al. 2018 (CRISPR) [CRISPR]: No Significant Effect PMID:29459680
• Roosing et al. 2015 (siRNA) [siRNA]: No effect PMID:26595381

Phenotypes

Mouse phenotype:

abnormal embryo size, preweaning lethality, incomplete penetrance, abnormal body wall morphology

Mouse ciliopathy phenotype:

persistence of hyaloid vascular system

Human ciliopathy phenotype:

autosomal recessive non-syndromic intellectual disability

Ciliopathy associations

• Biliary Atresia

Subcellular localization

cilia associated gene

Functional category

• Ciliary assembly/disassembly
• Viral interactions

Function

Rare variants were present in multiple genes distinct from those with BA-associated common variants in most BA cases. AFAP1 and TUSC3 knockdown blocked ciliogenesis in mouse tracheal cells. Inhibition of ciliogenesis caused biliary dysgenesis in zebrafish. AFAP1 and TUSC3 were expressed in fetal liver organoids, as well as fetal and BA livers, but not in normal or disease-control livers. Integrative analysis of BA-associated variants and liver transcripts revealed abnormal vasculogenesis and epithelial tube formation, explaining portal vein anomalies that co-exist with BA(37572794).