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100 1 _ |a Wiese, Maria
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245 _ _ |a The β-catenin/CBP-antagonist ICG-001 inhibits pediatric glioma tumorigenicity in a Wnt-independent manner.
260 _ _ |a [S.l.]
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520 _ _ |a Pediatric high-grade gliomas (pedHGG) belong to the most aggressive cancers in children with a poor prognosis due to a lack of efficient therapeutic strategies. The β-catenin/Wnt-signaling pathway was shown to hold promising potential as a treatment target in adult high-grade gliomas by abrogating tumor cell invasion and the acquisition of stem cell-like characteristics. Since pedHGG differ from their adult counterparts in genetically and biologically we aimed to investigate the effects of β-catenin/Wnt-signaling pathway-inhibition by the β-catenin/CBP antagonist ICG-001 in pedHGG cell lines. In contrast to adult HGG, pedHGG cells displayed minimal detectable canonical Wnt-signaling activity. Nevertheless, low doses of ICG-001 inhibited cell migration/invasion, tumorsphere- and colony formation, proliferation in vitro as well as tumor growth in vivo/ovo, suggesting that ICG-001 affects pedHGG tumor cell characteristics independent of β-catenin/Wnt-signaling. RNA-sequencing analyses support a Wnt/β-catenin-independent effect of ICG-001 on target gene transcription, revealing strong effects on genes involved in cellular metabolic/biosynthetic processes and cell cycle progression. Among these, high mRNA expression of cell cycle regulator JDP2 was found to confer a better prognosis for pedHGG patients. In conclusion, ICG-001 might offer an effective treatment option for pedHGG patients functioning to regulate cell phenotype and gene expression programs in absence of Wnt/β-catenin signaling-activity.
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700 1 _ |a Walther, Neele
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700 1 _ |a Diederichs, Christopher
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700 1 _ |a Schill, Fabian
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700 1 _ |a Monecke, Sebastian
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700 1 _ |a Salinas, Gabriela
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700 1 _ |a Sturm, Dominik
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700 1 _ |a Pfister, Stefan
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700 1 _ |a Dressel, Ralf
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700 1 _ |a Johnsen, Steven A
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700 1 _ |a Kramm, Christof M
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773 _ _ |a 10.18632/oncotarget.15934
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