Ontology highlight
ABSTRACT:
PROVIDER: PRJNA998865 | ENA |
REPOSITORIES: ENA
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Project description:Recent improvements in the analysis ancient biomolecules from human remains and associated dental calculus have provided new insights into the prehistoric diet and past genetic diversity of our species. Here we present a “multi-omics” study, integrating genomic and proteomic analyses of two post-Last Glacial Maximum (LGM) individuals from San Teodoro cave (Italy), to reconstruct their lifestyle and the post-LGM resettlement of Europe. Our analyses show genetic homogeneity in Sicily during the Palaeolithic, representing a hitherto unknown Italian genetic lineage within the previously identified “Villabruna cluster”. We argue that this lineage took refuge in Italy during the LGM, followed by a subsequent spread to central-western Europe. Analyses of dental calculus using genomics and proteomics showed a similar oral microbiome composition as Neandertals, but distinct from later foragers and farmers, revealing also a diet based on mammals, fish and plants. Our results demonstrate the power of using a multi-omics approach in the study of prehistoric human populations.
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Project description:Analysis of organic residues from different typologies of ancient funerary pottery found in graves at two archaeological sites of Campania Region in southern Italy and dating back to the age of the Italic populations during the first millennium BC. Several analytical techniques have been exploited. Proteomics was decisive for the characterization of the proteins and the assignment of the species of origin. Samples were encrustations on two bowls of the 3rd-4th century BC unhearted in Capua and one Phoenician-type amphora with unusual shape, found in a grave at the necropolis of the Greek colony in Cuma (7th century BC). Concretions on bowls were identified with the decisive contribution of proteomics as bovine bone. The amphora contained 2,500 years old bovine milk.
2022-06-23 | PXD030736 | Pride
Project description:Osteosarcoma is the most common primary malignant bone tumor in children. Validated markers for disease prognosis available at diagnosis are lacking. No genome-wide DNA methylation studies linked to clinical outcomes have been reported in osteosarcoma. To address this, we tested the methylome at over 1.1 million loci in 15 osteosarcoma biopsy samples obtained prior to the initiation of therapy and correlated these molecular data with disease outcomes. At the tested loci, samples obtained from patients who experienced disease relapse were generally more methylated than those from patients who did not have recurrence. In samples from patients who went on to have recurrent disease, increased DNA methylation was found at gene bodies, intergenic regions and empirically-annotated candidate enhancers, whereas candidate gene promoters were unusual for a more balanced distribution of increased and decreased DNA methylation. A locus at the TLR4 gene demonstrates one of strongest associations between DNA methylation and five year event-free survival, with empirical annotation of this locus showing promoter characteristics. Our data indicate that DNA methylation information has potential to be predictive of outcome in pediatric osteosarcoma, and that both promoters and non-promoter loci are potentially informative in DNA methylation studies. 15 samples. HpaII libraries were compared to at least 3 MspI libraries from the same sample
2015-01-18 | E-GEOD-59200 | biostudies-arrayexpress