Project description:Analyses of new genomic, transcriptomic or proteomic data commonly result in trashing many unidentified data escaping the ‘canonical’ DNA-RNA-protein scheme. Testing systematic exchanges of nucleotides over long stretches produces inversed RNA pieces (here named “swinger” RNA) differing from their template DNA. These may explain some trashed data. Here analyses of genomic, transcriptomic and proteomic data of the pathogenic Tropheryma whipplei according to canonical genomic, transcriptomic and translational 'rules' resulted in trashing 58.9% of DNA, 37.7% RNA and about 85% of mass spectra (corresponding to peptides). In the trash, we found numerous DNA/RNA fragments compatible with “swinger” polymerization. Genomic sequences covered by «swinger» DNA and RNA are 3X more frequent than expected by chance and explained 12.4 and 20.8% of the rejected DNA and RNA sequences, respectively. As for peptides, several match with “swinger” RNAs, including some chimera, translated from both regular, and «swinger» transcripts, notably for ribosomal RNAs. Congruence of DNA, RNA and peptides resulting from the same swinging process suggest that systematic nucleotide exchanges increase coding potential, and may add to evolutionary diversification of bacterial populations.
Project description:RNA-seq was used to unveil the molecular mechanisms of Cd tolereance in Sedum alfredii Hance shoots Here we are submitting the expression abundance of each contig in two treatments (CK vs Cd) with three biological replicates. Sequences for the contigs were submitted to EMBL-Bank.
Project description:NO-CUT is a one-stage phase II trial seeking to establish whether an oxaliplatin-based chemotherapy preceding standard neo-adjuvant fluoropyrimidines-based chemo radiotherapy, can safely spare demolitive surgical intervention in patients with operable rectal cancer, without increasing the risk of distant relapse. The trial also has a translational component aimed at establishing whether selected genomic, epigenetic, and transcriptomic markers are predictive of tumor and patient outcome.
Project description:The purpose of this study is the investigation of new host-microbiome interactions promoting adenoma formation and adenocarcinoma progression. For that purpose, the investigators will collect saliva, stool and colon biopsy specimens from patients referred to colonoscopy or surgical resection of colorectal tumor. Besides, a questionnaire about diet, lifestyle and medical history will be collected. Sample analysis will involve simultaneous characterization of host and microbiota genomic and transcriptomic components.
Project description:Genome-wide gene expression atlas of maize inbred line B73. Maize inbred B73 was used for constructing the gene atlas. Plants were grown in Plano silt loam soil at the West Madison Agricultural Research Station, Verona, WI during Summer 2008. During field preparation, 200 kg/acre of Urea (46-0-0) was applied. One day after planting, herbicides including Callisto (142 g/acre), Dual II (710 ml/acre), and Simazine (227 g/acre) were applied. For collection of seed tissues, shoots were covered before silk emergence avoiding any injury to the plants. Plants were self-pollinated on the same day to establish a common time initiation point for the harvest timeline. Greenhouse-grown plants were propagated by growing five plants per pot (30 cm top diameter, 28 cm height, 14.5 L volume) containing Metro-Mix 300 (Sun Gro Horticulture, Bellevue, WA, USA) with no additional fertilization. The growing conditions were 27 deg. C day and 24 deg. C night temperature with a 16h light (5:00am to 9:00pm) and 8h dark regime. Germinating seed tissue was generated by soaking seeds in distilled water in a Petri dish for 12h and then placing seeds between layers of moist paper towels for another 12h to allow germination. The field samples were collected between 8:00am and 10:00am, approximately 3 hours after sunrise. The greenhouse samples were collected between 8:00am and 9:00am, three hours after turning on the lights. Three biological replicates were collected for each tissue type. For all the tissues except germinating seeds, a biological replicate was constituted by collecting and pooling samples from three competitive randomly chosen plants. For germinating seed, ten randomly chosen seeds were pooled to form a biological replicate. The harvested tissues were immediately frozen in liquid nitrogen and stored at -80 deg. C. Total RNA was extracted using TRIZOL reagent (Invitrogen, http://www.invitrogen.com) following the manufacturer's protocol, and purified using RNeasy MinElute Cleanup Kit (Qiagen, http://www.qiagen.com) following the manufacturer's instructions. PLEXdb (http://www.plexdb.org) has submitted this series at GEO on behalf of the original contributor, Rajandeep S Sekhon. The equivalent experiment is ZM29 at PLEXdb.