BLU667-adapted transcriptome in CCDC6-RET fusion papillary thyroid carcinoma (TPC) cells
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PROVIDER: PRJNA870058 | ENA |
REPOSITORIES: ENA
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Project description:To investigate the short-termed and long-termed transcriptomic changes induced by the RET tyrosine kinase inhibitor BLU667 in TPC-1 human PTC cells
2023-04-11 | GSE211371 | GEO
Project description:Genomic rearrangements leading to intragenic gene fusion are mainly found in some types of haematopoietic malignancies and sarcomas. Recently they have been described also in carcinomas such as the papillary thyroid histotype (60%-70%) and the Hürthle thyroid tumours (58%). The presence of junction oncogene constitutes an area of exciting research for emerging therapy as targeting the RET-PTC1 fusion oncogene by using small interfering RNA (siRNA) strategies since it is present only in the tumour cells and not in the surrounding normal cells. Therefore, we developed a siRNA against RET-PTC1 junction and assess its efficiency on the human papillary thyroid carcinoma cell line TPC-1 which spontaneously harbours the RET-PTC1 oncogene. The targeted genes are assessed by microarray analysis by comparing the regulated genes by the siRNA_RET-PTC1 vs a siRNA_RET developed on the RET part of the mRNA minus the siRNA_control that contain four mutation within the RET-PTC1 sequence. To test the targeted genes in the TPC-1 cell line that spontaneously harbours RET-PTC1 junction of two siRNAs developed: Within the RET-PTC1 junction, and in the mRNA RET part. A non-specific siRNA harbouring 4 mutations within the RET-PTC1 sequence was used as negative control (siRNA_control). By real-time PCR (Q-RT-PCR) we demonstrated that both siRNAs (siRNA_RET-PTC1 and siRNA_RET) significantly reduce RET mRNA levels of about 85 % in TPC-1 cells. The negative control did not show an effect of RET mRNA levels. Three independent transfections were performed on TPC-1 cells using 5 µl of Lipofectamine 2000 transfection reagent (Invitrogen, Cergy-Pontoise, France) and 50nM of i) siRNA_RET-PTC1 or ii) siRNA_RET or iii) siRNA_control that harbour 4 mutations within its sequence. Total RNAs of untreated cells and transfected cells were purified using the RNA cleanup and concentration kit (QIAGEN, Hilden, Germany) and gathered in 4 pools : 1) TPC-1 harbouring RET-PTC1 ; 2) TPC-1 silenced for RET-PTC1 with siRNA RET-PTC1 ; 3) TPC-1 silenced for siRNA RET ; 4) TPC-1 treated with the siRNA control.
2010-05-01 | E-TABM-746 | biostudies-arrayexpress
Project description:Papillary thyroid cancer (PTC) is the most common type of endocrine malignancy. From a set of PTC patients whose tumor did not harbour any BRAF or RAS mutations, a 35 years old male patient’s normal, primary tumor and lymph node (LN) metastatic tissues were subjected to genomics and proteomics analysis. By RNA-seq analysis, we identified a novel RET rearrangement involving exons 1-4 from the 5’ end of the Trk fused Gene (TFG) fused to the 3’ end of RET tyrosine kinase leading to a TFG-RET fusion which transforms immortalized human thyroid cells in a kinase-dependent manner. Further, TFG-RET oncogene oligomerises in a PB1 domain-dependent manner and consistently, mutation of the oligomerisation interface led to the inhibition of RET-mediated oncogenic transformation. Quantitative proteomic analysis of the same samples revealed the upregulation of proteins involved in the ubiquitination machinery including E3 Ubiquitin ligase HUWE1 and DUBs like USP9X and UBP7 in both tumor and LN metastatic lesions. We further identified that expression of TFG-RET led to the upregulation of HUWE1. Further, in a cohort of PTC patients, we observed higher expression of HUWE1, USP9X and USP7 in the tumor and metastatic lesions, when compared to the matched normal tissue. Transient knockdown of HUWE1, USP9X and USP7 affected viability and proliferation of TFG-RET transformed cells. Consistently, inhibition of RET, HUWE1 and DUBs by small molecule inhibitors significantly reduced RET-mediated oncogenesis. Apart from unveiling a novel oncogenic RET fusion in PTCs, our data may open a novel avenue of targeting ubiquitin signaling machinery in human PTCs.
2020-04-02 | PXD016828 | Pride
Project description:Papillary thyroid cancer (PTC) is the most common type of endocrine malignancy. From a set of PTC patients whose tumor did not harbour any BRAF or RAS mutations, a 35 years old male patient’s normal, primary tumor and lymph node (LN) metastatic tissues was subjected to genomics and proteomics analysis. By RNA-seq analysis, we identified a novel RET rearrangement involving exons 1-4 from the 5’ end of the Trk fused Gene (TFG) fused to the 3’ end of RET tyrosine kinase leading to a TFG-RET fusion which transforms immortalized human thyroid cells in a kinase dependent manner. Further, TFG-RET oncogene oligomerises in a PB1 domain dependent manner and consistently, mutation of the oligomerisation interface led to the inhibition of RET-mediated oncogenic transformation. Quantitative proteomic analysis of the same samples revealed the upregulation of proteins involved in the ubiquitination machinery including HECT carrying E3 Ubiquitin ligase HUWE1 and DUBs like USP9X and UBP7 in the tumor and LN metastatic lesions. We further identify that expression of TFG-RET led to the upregulation of HUWE1. Further, in a cohort of PTC patients, we observed higher expression of HUWE1, USP9X and USP7 in the tumor and metastatic lesions, when compared to the matched normal tissue. Transient knockdown of HUWE1, USP9X and USP7 affected viability and proliferation of TFG-RET transformed cells. Consistently, inhibition of RET, HUWE1 and DUBs by small molecule inhibitors significantly reduced RET-mediated oncogenesis. Apart from unveiling a novel oncogenic RET fusion in PTCs, our data may open a novel avenue of targeting ubiquitin signaling machinery in human PTCs.
2020-04-02 | PXD016739 | Pride
Project description:A TFG-RET fusion was found in a papillary thyroid carcinoma.
| PRJEB37220 | ENA
Project description:BRAFV600E mutation is the most frequent molecular event in papillary thyroid carcinoma. The relation of this genetic alteration with the factors od poor prognosis has been reported as well as its influence on PTC gene signature. However human material disables distinction of cancer causes from its effect. We used our transgenic mouse model of papillary thyroid carcinoma induced by the BRAFV600E mutation to select BRAFV600E-specifi gene signature which was than compared to human material The human microarray data were obtained for: 27 papillary thyroid carcinomas including 18 BRAF(+), 8 RET(+), 1 RAS(+); 18 apparently healthy thyroids. In order to find BRAFV600E-specific gene signature data obtained from our transgenic mouse model of PTC were compared to human material. The analyses were performed taking into account not only the BRAF mutation but also other PTC initiating events including RET rearrangements and RAS poin mutations. Morover the microarray data were validated with the QPCR reaction.
2015-12-31 | E-GEOD-58545 | biostudies-arrayexpress
Project description:Label-free proteomics profiling of 37 paired tumor-normal tissues of papillary thyroid cancer
2024-02-08 | PXD044900 | Pride
Project description:Apart from alterations in the RET/PTC-RAS-BRAF pathway, comparatively little is known about the genetics of papillary thyroid carcinoma (PTC). We show that numerous miRNAs are transcriptionally up-regulated in PTC tumors compared with unaffected thyroid tissue. A set of 5 miRNAs including the 3 most upregulated ones (miRs 221, 222, 146) distinguished unequivocally between PTC and normal thyroid. Additionally, miR-221 was upregulated in unaffected thyroid tissue in several PTC patients, presumably an early event in carcinogenesis. Tumors in which the upregulation (11-19 fold) of miRs 221, 222 and 146 was strongest showed dramatic loss of KIT transcript and Kit protein. In five of 10 such cases this was associated with germline single nucleotide changes in the two recognition sequences in KIT for these miRNAs. We conclude that upregulation of several miRs and down regulation of KIT are involved in PTC pathogenesis, and that sequence changes in genes targeted by miRNAs can contribute to their downregulation.
2005-02-28 | E-TABM-68 | biostudies-arrayexpress
Project description:We compared the expression profiles of papillary thyroid tumors from the Chernobyl Tissues Bank (CTB) with tumors from French patients with no history of exposure to radiations. Keywords: papillary thyroid cancer vs. patient-matched healthy adjacent thyroid thyroid papillary cancer vs. patient-matched adjacent nontumor thyroid tissues. -14 tumors from France -12 tumors from Ukraine
2007-07-11 | E-GEOD-3950 | biostudies-arrayexpress
Project description:Phosphorylated proteomics profiling were performed on 37 paired tumor-normal tissues of human papillary thyroid cancer
2024-02-08 | PXD045017 | Pride