27a83bb1-c5c9-48d3-a95a-19446a7e3a0e - samples
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ABSTRACT:
PROVIDER: EGAD00001005189 | EGA |
REPOSITORIES: EGA
Similar Datasets
Project description:Whole exome sequencing (WES) is a popular and successful technology which is widely used in both research and clinical settings. However, there is a paucity of reference data for Aboriginal Australians to underpin the translation of health-based genomic research. Here we provide a catalogue of variants called after sequencing the exomes of 50 Aboriginal individuals from the Northern Territory (NT) of Australia and compare these to 72 previously published exomes from a Western Australian (WA) population of Martu origin. Sequence data for both NT and WA samples were processed using an ‘intersect-then-combine’ (ITC) approach, using GATK and SAMtools to call variants. A total of 289,829 variants were identified in at least one individual in the NT cohort and 248,374 variants in at least one individual in the WA cohort. Of these, 166,719 variants were present in both cohorts, whilst 123,110 variants were private to the NT cohort and 81,655 were private to the WA cohort. Our data set provides a useful reference point for genomic studies on Aboriginal Australians.
| EGAS00001003745 | EGA
Project description:The population history of Aboriginal Australians remains largely uncharacterised. We generated high-coverage genomes for 83 Aboriginal Australians (speakers of Pama-Nyungan languages) and 25 Papuans from the New Guinea Highlands. We find that Papuan and Aboriginal Australian ancestors diversified 25-40 thousand years ago (kya), suggesting early population structure in the ancient continent of Sahul (Australia, New Guinea and Tasmania). However, all studied Aboriginal Australians descend from a single founding population that differentiated ~10-32 kya. We infer a population expansion in northeast Australia during the Holocene (past c.10 kya) associated with limited gene flow from this region to the rest of Australia consistent with the spread of the Pama-Nyungan languages. We estimate that Aboriginal Australians and Papuans diverged from Eurasians 51-72 kya, following a single out of Africa dispersal, and subsequently admixed with different archaic populations. Finally, we report evidence of selection in Aboriginal Australians potentially associated with living in the desert.
| EGAS00001001766 | EGA
Project description:Aboriginal mitogenomes reveal 50,000 years of regionalism in Australia
| PRJEB15344 | ENA
Project description:NAA15 is a component of the NatA complex that acetylates amino terminal (Nt) protein residues and influences protein synthesis. We identified multiple damaging NAA15 variants in congenital heart disease patients, including four loss-of-function (LoF) variants, one missense (R276W) de novo variant and 15 rare inherited missense variants. To understand the effects of these variants on NatA complex activity, we introduced heterozygous LoF, compound heterozygous and missense residues iPS cells using CRISPR/Cas9. Haploinsufficient NAA15 iPS cells differentiate into cardiomyocytes, unlike NAA15-null iPS cells, presumably due to alterations in the amount and composition of the NatA complex. Mass spectrometry (MS)-based N-terminomics analyses showed that nearly 80% of iPS cell proteins displayed partial or complete Nt-acetylation. Between null and haploinsufficient NAA15 cells, 32 and 9 NatA-specific targeted proteins differed in their Nt-acetylation degree, respectively. In addition, the steady-state protein levels of more than 560 proteins were altered in mutant compared to wild type cells. While most NatA-specific Nt-acetylated proteins were fully acetylated, ~19 proteins were partially acetylated. NAA15-haploinsufficiency abrogated Nt-acetylation of 4 of these proteins but did not affect the acetylation of the other 15 proteins. Similar patterns of acetylation loss in few proteins were observed in both NAA15 haploinsufficient and NAA15 R276W iPS cells. These studies define human proteins that appear to require the full NAA15 complex for normal acetylation and imply that deficiencies in one or more of these NAA15 target proteins contribute to normal cardiac development. The current dataset contains all N-terminomics data related to this study.
2021-08-30 | PXD018013 | Pride
Project description:NAA15 is a component of the NatA complex that acetylates amino terminal (Nt) protein residues and influences protein synthesis. We identified multiple damaging NAA15 variants in congenital heart disease patients, including four loss-of-function (LoF) variants, one missense (R276W) de novo variant and 15 rare inherited missense variants. To understand the effects of these variants on NatA complex activity, we introduced heterozygous LoF, compound heterozygous and missense residues iPS cells using CRISPR/Cas9. Haploinsufficient NAA15 iPS cells differentiate into cardiomyocytes, unlike NAA15-null iPS cells, presumably due to alterations in the amount and composition of the NatA complex. Mass spectrometry (MS)-based N-terminomics analyses showed that nearly 80% of iPS cell proteins displayed partial or complete Nt-acetylation. Between null and haploinsufficient NAA15 cells, 32 and 9 NatA-specific targeted proteins differed in their Nt-acetylation degree, respectively. In addition, the steady-state protein levels of more than 560 proteins were altered in mutant compared to wild type cells. While most NatA-specific Nt-acetylated proteins were fully acetylated, ~19 proteins were partially acetylated. NAA15-haploinsufficiency abrogated Nt-acetylation of 4 of these proteins but did not affect the acetylation of the other 15 proteins. Similar patterns of acetylation loss in few proteins were observed in both NAA15 haploinsufficient and NAA15 R276W iPS cells. These studies define human proteins that appear to require the full NAA15 complex for normal acetylation and imply that deficiencies in one or more of these NAA15 target proteins contribute to normal cardiac development. The current dataset contains all shotgun proteomics data related to this study.
2021-07-07 | PXD017672 | Pride
Project description:All mouse experiments were approved by The University of Melbourne Animal Ethics Committee (AEC ID1914940) and conformed to the National Health and Medical Research Council of Australia guidelines regarding the care and use of experimental animals. C57BL/6J mice (JAX 000664) were obtained from Animal Resource Centre (WA, Australia). Mice were housed at 22°C (+/-1°C) in groups of five/cage and maintained on a Standard Chow diet (Specialty Feeds, Australia) with a 12-hour light/dark cycle and ad libitum access to food and water. For intramuscular injections of rAAV6, mice were anesthetized with isoflurane (4% in oxygen at 1L/min) and then transferred to a dissecting microscope stage with heat pad and isoflurane inhalation nose piece (2% in oxygen at 1 L/min). Unconsciousness was assessed via the lack of leg and optical reflexes for at least one minute to ensure head position does not affect normal breathing. Mice received subcutaneous analgesic injection of meloxicam between the shoulder blades (5mg/kg) and the surface of the hindlimbs were sterilized with 80% ethanol. The TA/EDL muscles were injected with 2 x 10^10 vector genomes / 30 µl of rAAV6 harbouring either a scramble shRNA or an shRNA targeting UFC1 using a 32G needle. Mice were returned to cages and body weights monitored daily for the first 3 days and then weekly.
2023-01-08 | PXD035170 | Pride
Project description:Genotype calls for 83 Aboriginal Australian genomes split by chromosomes. In short, genotypes were called individually with samtools. They were subsequently filtered with thresholds related to sequencing depth, location of variants, sequencing error, and strand bias. Once combined, the genotypes were filtered when not in Hardy-Weinberg equilibrium. The genomes were phased with IMPUTE using the 1000 Genomes reference panel. NB: for the Y chromosomes, only the 44 Aboriginal Australian males are included.
| EGAD00001004155 | EGA
Project description:To understand the full range of expression variation, alternative splicing, and the genetics of regulatory variation in humans, we have sequenced the genomes, exomes, and transcriptomes of 45 individuals in the Human Genome Diversity Panel (HGDP) from seven worldwide populations that span the geographic breadth of human migration history. We find few genes that are systematically differentially expressed among populations. Further, allelic expression analysis indicates that previously mapped common regulatory variants identified in eight HapMap3 populations have similar effects across HGDP populations, suggesting that the cellular effects of common variants are shared even across very diverse populations. In contrast, comparisons of alternative splicing across pairwise populations reveal highly significant differences, with ~20% of alternatively spliced exons varying significantly by population. Greater genomic differences are associated with significantly more splicing variability overall. Together, these results provide a resource and an estimate for the degree of sharing of gene expression, alternative splicing, and regulatory genetics across populations. Lymphoblastoid cell line mRNA profiles of 45 human samples from the Human Genome Diversity Panel sequenced on an Illumina HiSeq 2000, each sample library was sequenced in duplicate to produce a merged sample bam.
2014-08-25 | E-GEOD-54308 | biostudies-arrayexpress