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.
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.
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
Project description:microRNA profiling of gastric cancer vs. normal, pre-/-post CF (cisplatin/fluorouracil) chemotherapy. Biopsy samples were collected prior to chemotherapy from 90 gastric cancer patients treated with CF and from 34 healthy volunteers. At the time of disease progression, post-treatment samples were collected from 8 clinical responders. miRNA expression was determined using a custom-designed Agilent microarray. In order to identify an miRNA signature for chemotherapy resistance, we correlated miRNA expression levels with the time to progression (TTP) after CF. 90 pre-treatment gastric cancer samples, 34 healthy volunteers, 8 post-treatment samples.
Project description:microRNA profiling of gastric cancer vs. normal, pre-/-post CF (cisplatin/fluorouracil) chemotherapy. Biopsy samples were collected prior to chemotherapy from 90 gastric cancer patients treated with CF and from 34 healthy volunteers. At the time of disease progression, post-treatment samples were collected from 8 clinical responders. miRNA expression was determined using a custom-designed Agilent microarray. In order to identify an miRNA signature for chemotherapy resistance, we correlated miRNA expression levels with the time to progression (TTP) after CF.
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.
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.
Project description:Transcriptional profiling was performed on biopsies from patients with head and neck squamous cell carcinoma that had been treated with cisplatin and 5-fluorouracil to identify genes predictive of response to chemotherapy Two condition experiment, Biopsies from complete clinical responders and from non-responders were compared based upon a common reference using a two color design
Project description:This study was conducted to identify dysregulated genes associated with acquired resistance to chemotherapy. Endoscopic biopsy samples were collected from CF-treated metastatic gastric cancer patients prior to therapy and following the development of resistance to therapy.
Project description:One of the first-line chemotherapy regimes for gastric cancer is a combination treatment of epirubicin, cisplatin, and 5-fluorouracil (ECF). Chemoresistance remains the major obstacle to achieving successful results from gastric cancer treatment. Understanding acquired or pre-existing resistance to anticancer drugs is essential to the development of a therapeutic modality for gastric cancer. In this study, we established ECF-resistant (ECF-R) gastric cancer cell lines. We found that nerve injury–induced protein 2 (Ninjurin2, NINJ2) functioned as a biomarker for ECF-R in both gastric cancer cells. We also investigated the NINJ2 binding molecule and downstream pathway using both LC-MS/MS and phospho-antibody arrays.
