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Clinical response of metastatic gastric cancer patients to cisplatin and fluorouracil (CF) combination chemotherapy

ABSTRACT: This study was conducted to identify transcriptional profiles predictive of a clinical response of metastatic gastric cancer patients to cisplatin and fluorouracil (CF) combination chemotherapy.

ORGANISM(S): Homo sapiens

PROVIDER: GSE14208 | GEO | 2011/06/01

SECONDARY ACCESSION(S): PRJNA114459

REPOSITORIES: GEO

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Clinical response of metastatic gastric cancer patients to cisplatin and fluorouracil (CF) combination chemotherapy

Project description:This study was conducted to identify transcriptional profiles predictive of a clinical response of metastatic gastric cancer patients to cisplatin and fluorouracil (CF) combination chemotherapy. Endoscopic biopsy samples were collected from CF-treated metastatic gastric cancer patients prior to therapy and following the development of resistance to therapy.

2011-06-01 | E-GEOD-14208 | biostudies-arrayexpress

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The genes associated with the response to S-1,cisplatin and docetaxel combination chemotherapy (DCS therapy) for metastatic gastric cancer:

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Project description:Despite the effort in defining the molecular mechanisms for the drug resistance, predictors of response to chemotherapy have yet to be developed in gastric cancer. With microarray of whole human genes, we determined 29 genes associated with the response to cisplatin and docetaxel combination chemotherapy for metastatic gastric cancer. We obtained Fresh-frozen samples of tumor tissue and background gastric mucosa tissue from 19 patients with gastric cancer by endoscopic biopsy before DCS therapy. Total RNA was extracted from individual microdissected populations of cancer cells and background mucosa cells using RNAeasy mini kits and amplified with a random primer, WT-Ovation FFPE RNA Amplification System V2; NuGEN, Cincinnati, Ohio) according to the manufacturer’s protocols. The amplified fragmented RNA was hybridized on a Whole Human Genome Oligo Microarray Chip (Agilent Technologies) containing 44,000 cDNA clones.

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2011-12-16 | GSE30070 | GEO

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Enhanced phosphorylation of c-Jun by cisplatin treatment as a potential predictive biomarker for cisplatin response in combination with patient-derived tumor organoids.

Project description:Despite recent advancement in sequencing technologies and large-scale drug screenings with hundreds of cell lines, the predictive accuracy of mutation-based biomarkers is still insufficient to guide cancer therapy. Therefore, novel types of diagnostic methods with alternative biomarkers are highly appreciated. To develop the novel methods, we hypothesized that sensitivity-specific changes in phosphorylations of signaling molecules could be useful as predictive biomarkers. Here, we aimed to develop predictive methods for cisplatin with a combination of such type of biomarker(s) and patient-derived tumor organoids (PDOs). We found that cisplatin sensitive cell lines or PDOs showed enhanced phosphorylation of c-Jun (p-c-Jun) within 24 h in response to cisplatin treatment. We also compared responses to cisplatin in 6 PDOs with therapeutic effect of neoadjuvant chemotherapy (docetaxel/cisplatin/5-fluorouracil) in 6 matched patients. Mechanistically, the c-Jun induction was partly related to TNF signaling induced by cisplatin. Thus, our data implicates the feasibility of enhanced p-c-Jun by cisplatin treatment as a predictive biomarker for the efficacy.

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Expression data from human endoscopic biopsy samples

Project description:This SuperSeries is composed of the following subset Series: GSE14208: Clinical response of metastatic gastric cancer patients to cisplatin and fluorouracil (CF) combination chemotherapy GSE14209: Dysregulated genes associated with acquired resistance Refer to individual Series

2011-06-01 | E-GEOD-14210 | biostudies-arrayexpress

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