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Allaway, Robert J; Fischer, Dawn A; de Abreu, Francine B; Gardner, Timothy B; Gordon, Stuart R; Barth, Richard J; Colacchio, Thomas A; Wood, Matthew; Kacsoh, Balint Z; Bouley, Stephanie J; Cui, Jingxuan; Hamilton, Joanna; Choi, Jungbin A; Lange, Joshua T; Peterson, Jason D; Padmanabhan, Vijayalakshmi; Tomlinson, Craig R; Tsongalis, Gregory J; Suriawinata, Arief A; Greene, Casey S; Sanchez, Yolanda; Smith, Kerrington D
Oncotarget, 03/2016, Letnik: 7, Številka: 13Journal Article
N-of-1 trials target actionable mutations, yet such approaches do not test genomically-informed therapies in patient tumor models prior to patient treatment. To address this, we developed patient-derived xenograft (PDX) models from fine needle aspiration (FNA) biopsies (FNA-PDX) obtained from primary pancreatic ductal adenocarcinoma (PDAC) at the time of diagnosis. Here, we characterize PDX models established from one primary and two metastatic sites of one patient. We identified an activating KRAS G12R mutation among other mutations in these models. In explant cells derived from these PDX tumor models with a KRAS G12R mutation, treatment with inhibitors of CDKs (including CDK9) reduced phosphorylation of a marker of CDK9 activity (phospho-RNAPII CTD Ser2/5) and reduced viability/growth of explant cells derived from PDAC PDX models. Similarly, a CDK inhibitor reduced phospho-RNAPII CTD Ser2/5, increased apoptosis, and inhibited tumor growth in FNA-PDX and patient-matched metastatic-PDX models. In summary, PDX models can be constructed from FNA biopsies of PDAC which in turn can enable genomic characterization and identification of potential therapies.
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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Povezave do osebnih bibliografij avtorjev | Povezave do podatkov o raziskovalcih v sistemu SICRIS |
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Vir: Osebne bibliografije
in: SICRIS
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