In a T-cell subset analysis focusing on known age-related phenotypic changes, we showed significantly higher miR-21 and miR-223 levels in CD8+CD45RO-CCR7- TEMRA compared to CD45RO-CCR7+ TNAIVE-cells
Moreover, miR-21 but not miR-223 levels were significantly increased in CD45RO-CD31- post-thymic TNAIVE cells as compared to thymic CD45RO-CD31+ TNAIVE cells
Upon activation of CD45RO- TNAIVE cells we observed a significant induction of miR-21 especially in CD4+ T cells, while miR-223 levels significantly decreased only in CD4+ T cells
We demonstrated that the expressions of myelogenic miRNAs such as miR-155, miR-223, miR-146a, miR-146b, miR-132, miR-142-5p, and miR-142-3p were increased in aged bone marrow derived dendritic cells (BMDC) under normal and activated conditions