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KCTD17-mediated Ras stabilization promotes hepatocellular carcinoma progression
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KCTD17-mediated Ras stabilization promotes hepatocellular carcinoma progression
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Journal Article
KCTD17-mediated Ras stabilization promotes hepatocellular carcinoma progression
2024
Overview
Background/Aims: Potassium channel tetramerization domain containing 17 (KCTD17) protein, an adaptor for the cullin3 (Cul3) ubiquitin ligase complex, has been implicated in various human diseases; however, its role in hepatocellular carcinoma (HCC) remains elusive. Here, we aimed to elucidate the clinical features of KCTD17, and investigate the mechanisms by which KCTD17 affects HCC progression.
Methods: We analyzed transcriptomic data from patients with HCC. Hepatocyte-specific KCTD17 deficient mice were treated with diethylnitrosamine (DEN) to assess its effect on HCC progression. Additionally, we tested KCTD17- directed antisense oligonucleotides for their therapeutic potential in vivo.
Results: Our investigation revealed the upregulation of KCTD17 expression in both tumors from patients with HCC and mouse models of HCC, in comparison to non-tumor controls. We identified the leucine zipper-like transcriptional regulator 1 (Lztr1) protein, a previously identified Ras destabilizer, as a substrate for KCTD17-Cul3 complex. KCTD17- mediated Lztr1 degradation led to Ras stabilization, resulting in increased proliferation, migration, and wound healing in liver cancer cells. Hepatocyte-specific KCTD17 deficient mice or liver cancer xenograft models were less susceptible to carcinogenesis or tumor growth. Similarly, treatment with KCTD17-directed antisense oligonucleotides (ASO) in a mouse model of HCC markedly lowered tumor volume as well as Ras protein levels, compared to those in control ASO-treated mice.
Conclusions: KCTD17 induces the stabilization of Ras and downstream signaling pathways and HCC progression and may represent a novel therapeutic target for HCC. (Clin Mol Hepatol 2024;30:895-913)
Publisher
대한간학회,Korean Association for the Study of the Liver,The Korean Association for the Study of the Liver
Subject
/ Carcinoma, Hepatocellular - metabolism
/ Carcinoma, Hepatocellular - pathology
/ Cullin Proteins - metabolism
/ Diethylnitrosamine - toxicity
/ Gene Expression Regulation, Neoplastic
/ Genomes
/ HCC
/ Humans
/ KCTD17
/ Kinases
/ Liver Neoplasms - metabolism
/ Lztr1
/ Male
/ Mice
/ Oligonucleotides, Antisense - metabolism
/ Original
/ Plasmids
/ Proteins
/ Ras
/ Transcription Factors - genetics
/ Transcription Factors - metabolism
/ 내과학
