Project description:This data was used to identify regions of the genome that have undergone positive selection in a high-altitude Tibetan population. Affymetrix SNP arrays were used to genotype DNA extracted from blood samples. This data was used to perform genome-wide scans of positive selection in a native high-altitude Tibetan population.
Project description:To explore the exceptional mechanisms of gene expression and DNA methylation that are induced by low altitude environments in Tibetan pigs, we performed a comparative transcriptomic analysis of skeletal muscle in indigenous Tibetan pigs that reside in high altitude regions (~4,000 m) and their counterparts that migrated to the geographically neighboring low-altitude regions (~500 m) for nearly ten generations. We identified protein coding genes that related to hypoxia response (EGLN3 and FLT1), oxygen transport and energy metabolism (TFB2M), and two long non-coding RNAs (TCONS_00039686 and TCONS_00084992) that associated with the regulation of transcription and various nucleolus and organelle lumen, were differentially expressed between Tibetan pigs and their counterparts in low-altitude regions, thus might be the potential candidate regulators in skeletal muscle of low-altitude acclimation in Tibetan pigs. We also found genes embedded in differentially methylated regions between Tibetan pigs and their counterparts in low-altitude regions were mainly involved in ‘Starch and sucrose metabolism’, ‘glucuronosyltransferase activity’ processes, hypoxia and energy metabolism. We envision that this study will serve as a valuable resource for mammal acclimatization research and agricultural food industry.
Project description:To explore the exceptional mechanisms of gene expression and DNA methylation that are induced by low altitude environments in Tibetan pigs, we performed a comparative transcriptomic analysis of skeletal muscle in indigenous Tibetan pigs that reside in high altitude regions (~4,000 m) and their counterparts that migrated to the geographically neighboring low-altitude regions (~500 m) for nearly ten generations. We identified protein coding genes that related to hypoxia response (EGLN3 and FLT1), oxygen transport and energy metabolism (TFB2M), and two long non-coding RNAs (TCONS_00039686 and TCONS_00084992) that associated with the regulation of transcription and various nucleolus and organelle lumen, were differentially expressed between Tibetan pigs and their counterparts in low-altitude regions, thus might be the potential candidate regulators in skeletal muscle of low-altitude acclimation in Tibetan pigs. We also found genes embedded in differentially methylated regions between Tibetan pigs and their counterparts in low-altitude regions were mainly involved in ‘Starch and sucrose metabolism’, ‘glucuronosyltransferase activity’ processes, hypoxia and energy metabolism. We envision that this study will serve as a valuable resource for mammal acclimatization research and agricultural food industry.
Project description:This study aimed to elucidate how the epididymis of high-altitude Tibetan sheep regulates sperm maturation. Epididymal caput, corpus, and cauda tissues were collected from six Tibetan sheep in Haiyan County, Qinghai Province, and subjected to DIA proteomic analysis to identify key signaling pathways and core molecules involved in sperm maturation. Ultimately, we sought to clarify the molecular mechanisms by which the Tibetan sheep epididymis modulates sperm maturation under long-term high-altitude adaptation and evolution.
Project description:Tibetan's adaptation to high-altitude environment at the Qinghai-Tibetan plateau represents a remarkable case of natural selection during recent human evolution. We generated time series paired RNAseq, ATACseq and Hi-C data in Tibetan and Han Chinese's umbilical endothelial cells from normoxia to hypoxia condition. Our results provide a broad resource of genome-wide hypoxia regulatory network to characterize the effect of genetic variation in high-altitude adaptation, and indicates large-scale maps of variants need proper cell types to understand its act on gene regulation.
2020-07-15 | GSE145774 | GEO
Project description:Transcriptomic analysis of different epididymal segments in high-altitude Tibetan sheep
Project description:Intervention type:DRUG. Intervention1:Huaier, Dose form:GRANULES, Route of administration:ORAL, intended dose regimen:20 to 60/day by either bulk or split for 3 months to extended term if necessary. Control intervention1:None.
Primary outcome(s): For mRNA libraries, focus on mRNA studies. Data analysis includes sequencing data processing and basic sequencing data quality control, prediction of new transcripts, differential expression analysis of genes. Gene Ontology (GO) and the KEGG pathway database are used for annotation and enrichment analysis of up-regulated genes and down-regulated genes.
For small RNA libraries, data analysis includes sequencing data process and sequencing data process QC, small RNA distribution across the genome, rRNA, tRNA, alignment with snRNA and snoRNA, construction of known miRNA expression pattern, prediction New miRNA and Study of their secondary structure Based on the expression pattern of miRNA, we perform not only GO / KEGG annotation and enrichment, but also different expression analysis.. Timepoint:RNA sequencing of 240 blood samples of 80 cases and its analysis, scheduled from June 30, 2022..
Project description:To reveal the protein expression patterns in Tibetan sheep lungs at different altitudes, proteome sequencing was performed in this study.
2021-12-30 | PXD030661 |
Project description:Small RNA sequencing of longissimus dorsi muscle of Tibetan sheep at different ages