Project description:We compare miRNA profiling in two cell populations of mesenchymal stromal cells focusing on senescence-related changes: Human Dental Pulp Stromal Cells (hDPSCs) and human Periosteum-Derived Progenitor Cells (hPDPCs). After these cells were harvested, total RNA extraction and whole genome miRNA profiling was performed, and DIANA-miRPath analysis was applied to find the target/pathways. Our finding is consistent with the idea that the embryological origin influences cell behavior and the ageing process. Moreover, the two populations activate different downstream mechanisms. Our study strengthens the hypothesis that ageing is driven by numerous mediators interacting through an intricate molecular network, which affects adult stem cells self-renewal capability.
Project description:Metabolomics and lipidomics workflows were used to analyze Mesenchymal stromal cell (MSC) metabolites. Metabolite abundances were used to model MSC potency results in IDO and T-cell proliferation assays.
Project description:To investigate ageing-related changes in cardiac transcriptome of FVB mice we performed differential gene expression profiling analysis using data obtained from RNA-seq of five life time points (4-, 8-, 10-, 12-, 14 months) by comparing older FVB mice (8-, 10-, 12-, 14 months) to young 4-month-old FVB mice (FVB vs. FVB analysis). Genes that were differentially expressed in FVB vs. FVB analysis were also annotated to the respective biological processes based on Gene Ontology database, assessed for their overrepresentation to indicate processes involved in cardic ageing process in FVB mice. To investigate heart failure-related as well as ageing-related changes in cardiac transcriptome of Tgαq*44 mice we performed differential gene expression profiling analysis using data obtained from RNA-seq of five life time points (4-, 8-, 10-, 12-, 14 months) by comparing Tgαq*44 to age-matched FVB mice (Tgαq*44 vs. FVB analysis). Genes that were differentially expressed in Tgαq*44 vs. FVB analysis were also annotated to the respective biological processes based on Gene Ontology database, assessed for their overrepresentation to indicate processes iniciated along heart failure development as well as cardiac ageing process in Tgαq*44 mice. To investigate early activated ageing-related changes in cardiac transcriptome of Tgαq*44 mice during entire heart failure development we searched for the presence of ageing-related genes (those identified in cardiac transcriptome of older FVB mice) among genes which were differentially expressed commonly at each measured time points in Tgαq*44 vs. FVB analysis. To investigate early activated aging-related biological processes in cardiac transcriptome of Tgαq*44 mice during entire heart failure development, we searched for the presence of ageing-related processes (those identified in cardiac transcriptome of older FVB mice) among processes which were overrepresented commonly at each measured time points in Tgαq*44 vs. FVB analysis.
Project description:While much research has focussed on advanced stages (and mechanisms) of ageing, this fundamental process may commence at a relatively early age, impacting organ function and resilience throughout the adult lifespan. In male C57BL/6 mice, multiple phenotypic and transcriptional features of cardiovascular ageing were evident from 16 weeks of age, well in advance of 'middle age'. Phenotypic changes include declining cardiac and coronary reserves and resistance to ischaemic insult. Gene changes support early constitutive stress together with a plateau in transcriptome responsiveness to ischaemia, and declining induction of cardioprotective and quality control pathways vs. increasing induction of genes promoting signalling dysfunction, hypertrophy and cell death. These findings support cardiac ageing from early adulthood. Molecular changes reflect declining adaptive capacity/quality control, consistent with evolutionary theories of biological ageing.
Project description:Human bone-marrow-derived mesenchymal stem cells from young and old donors and tenogenic, chondrogenic and osteogenic constructs derived from these were subject to RNASeq and miRNASeq. We wished to identify common pathways of musculoskeletal ageing.
Project description:Human bone-marrow-derived mesenchymal stem cells from young and old donors and tenogenic, chondrogenic and osteogenic constructs derived from these were subject to RNASeq and miRNASeq. We wished to identify common pathways of musculoskeletal ageing.