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NCK-associated prot...
NCK-associated protein 1 like (nckap1l) minor splice variant regulates intrahepatic biliary network morphogenesis
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Ghaffari, K (author)
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Pierce, LX (author)
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Roufaeil, M (author)
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Gibson, I (author)
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Tae, K (author)
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Sahoo, S (author)
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Cantrell, JR (author)
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- Andersson, O (author)
- Karolinska Institutet
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Lau, J (author)
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Sakaguchi, TF (author)
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(creator_code:org_t)
- 2021-03-19
- 2021
- English.
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In: PLoS genetics. - : Public Library of Science (PLoS). - 1553-7404. ; 17:3, s. e1009402-
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Abstract
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- Impaired formation of the intrahepatic biliary network leads to cholestatic liver diseases, which are frequently associated with autoimmune disorders. Using a chemical mutagenesis strategy in zebrafish combined with computational network analysis, we screened for novel genes involved in intrahepatic biliary network formation. We positionally cloned a mutation in thenckap1lgene, which encodes a cytoplasmic adaptor protein for the WAVE regulatory complex. The mutation is located in the last exon after the stop codon of the primary splice isoform, only disrupting a previously unannotated minor splice isoform, which indicates that the minor splice isoform is responsible for the intrahepatic biliary network phenotype. CRISPR/Cas9-mediatednckap1ldeletion, which disrupts both the primary and minor isoforms, showed the same defects. In the liver ofnckap1lmutant larvae, WAVE regulatory complex component proteins are degraded specifically in biliary epithelial cells, which line the intrahepatic biliary network, thus disrupting the actin organization of these cells. We further show thatnckap1lgenetically interacts with the Cdk5 pathway in biliary epithelial cells. These data together indicate that althoughnckap1lwas previously considered to be a hematopoietic cell lineage-specific protein, its minor splice isoform acts in biliary epithelial cells to regulate intrahepatic biliary network formation.
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- By the author/editor
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Ghaffari, K
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Pierce, LX
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Roufaeil, M
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Gibson, I
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Tae, K
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Sahoo, S
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show more...
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Cantrell, JR
-
Andersson, O
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Lau, J
-
Sakaguchi, TF
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show less...
- Articles in the publication
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PLoS genetics
- By the university
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Karolinska Institutet