Project description:Primary objectives: The primary objective is to investigate circulating tumor DNA (ctDNA) via deep sequencing for mutation detection and by whole genome sequencing for copy number analyses before start (baseline) with regorafenib and at defined time points during administration of regorafenib for treatment efficacy in colorectal cancer patients in terms of overall survival (OS).
Primary endpoints: circulating tumor DNA (ctDNA) via deep sequencing for mutation detection and by whole genome sequencing for copy number analyses before start (baseline) with regorafenib and at defined time points during administration of regorafenib for treatment efficacy in colorectal cancer patients in terms of overall survival (OS).
Project description:Synonymous recoding of viral genome can attenuate their replication, but can have pleiotropic effects, with multiple mechanisms contributing to attenuation. We set out to design recoded viral genomes whose attenuation was specific and conditional. The zinc finger antiviral protein (ZAP) recognizes CpG dinucleotides and targets CpG-rich RNAs for depletion, but RNA features such as CpG numbers, spacing and surrounding nucleotide composition that enable specific modulation by ZAP are undescribed. Using synonymously mutated HIV-1 genomes, we define several sequence features that govern ZAP sensitivity and stable attenuation. Using features defined using HIV-1, we then designed a mutant enterovirus A71 genome whose attenuation was also stable and strictly ZAP-dependent, both in cell culture and in mice. This conditionally attenuated enterovirus A71 elicited neutralizing antibodies that were protective against wild-type enterovirus 71 infection and disease. Elucidation of the determinants of ZAP sensitivity can thus enable the rational design of conditionally attenuated viral vaccines.
Project description:Evaluation of different strategies to interpret metaproteomics data acquired on soil samples from a floodplain along the Seine River (France) incorporating sample-specific metagenomics data, soil genome catalogue database, and generic sequence database.
Project description:The skin commensal yeast Malassezia is associated with several skin disorders. To establish a reference resource, we sought to determine the complete genome sequence of Malassezia sympodialis and identify its protein-coding genes. A novel genome annotation workflow combining RNA sequencing, proteomics, and manual curation was developed to determine gene structures with high accuracy.
Project description:To elucidate alterations in immune cells during enterovirus 71 (EV-A71) infection and explore potential interaction mechanisms.Single-cell sequencing technology was used to sequence peripheral blood monocytes (PBMCs) obtained from a severe hand, foot and mouth disease (HFMD) patient due to EV-A71 and a healthy control.
2024-06-20 | GSE269965 | GEO
Project description:Genome sequences of Enterovirus from Guatemalan sewage, 2019-2021
Project description:We report the m6dA modification on the Drosophila genome. We collected ovary genomic DNA from 2-day wild-type and DMAD mutant files and performed DNA-immunoprecipitation(DNA-IP)experiments using anti-m6dA antibody. The generated DNA library was subjected to a high-throughput deep sequencing analysis. In this assay, the IgG-immunoprecipited DNA from the same amount of wild-type ovaries was used as the control, and the high-throughput sequencing resulted in a range of approximately 3 to 4.6 million reads. In sum, we identified 50 and 195 peaks from wild-type and DMAD mutant samples. Importantly, m6dA is mainly utilized to modify the transposon sequence on the chromosomes. Examination of m6dA modifications in Genomic DNA of WT and DMAD mutant ovary.