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- W2328581173 abstract "Purpose: The abnormal Wnt/β-catenin signaling plays a key role in hepatoblastoma (HBL) development. In HBL, CTNNB1 coding s-catenin protein with mutated or deleted at hot-spot regions involving exon 3 stimulates this pathway. Previously we reported that the levels of telomerase reverse transcriptase (TERT) mRNA and telomerase activities were correlated with outcomes of the patients with HBL. In this study, we examined the correlation between Wnt/β-catenin signaling and telomerase activation in HBL. And, we investigated the location of β-catenin and TERT in HBL and the expression levels of the Wnt signal genes downstream of s -catenin. Methods: Tumors derived from 212 HBL cases treated with the JPLT-2 protocol were analyzed for oncogenic mutations (missense mutations and interstitial deletions in the third exon) of the CTNNB1 gene encoding β-catenin and mutations of Wnt signal genes including APC, AXIN1, and 2. Moreover, these tumors were analyzed for the expression levels of TERT (telomerase reverse transcriptase) and the Wnt signal genes downstream of s -catenin (MYC, cyclin D1 and MMP7) using Real time RT-PCR and immunohistochemistry. Results: Oncogenic mutations of CTNNB1 were detected in 163 cases (76.4%) and more than 80% showed abnormalities of Wnt signal genes. The expression levels of TERT were significantly higher in 49 cases without mutation (P Citation Format: Eiso Hiyama, Yuka Ueda, Arata Kamimatsuse, Yoshiuki Onitake, Kaoru Ogura, Keiko Hiyama. Wnt signaling and telomerase activation in hepatoblastoma. [abstract]. In: Proceedings of the 104th Annual Meeting of the American Association for Cancer Research; 2013 Apr 6-10; Washington, DC. Philadelphia (PA): AACR; Cancer Res 2013;73(8 Suppl):Abstract nr 3820. doi:10.1158/1538-7445.AM2013-3820" @default.
- W2328581173 created "2016-06-24" @default.
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- W2328581173 date "2013-04-15" @default.
- W2328581173 modified "2023-09-27" @default.
- W2328581173 title "Abstract 3820: Wnt signaling and telomerase activation in hepatoblastoma." @default.
- W2328581173 doi "https://doi.org/10.1158/1538-7445.am2013-3820" @default.
- W2328581173 hasPublicationYear "2013" @default.
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