Unknown

Dataset Information

0

Multi-Omics Profiling Identifies Pathways Associated With CD8+ T-Cell Activation in Severe Aplastic Anemia.


ABSTRACT: Severe aplastic anemia (SAA) is an autoimmune disease characterized by immune-mediated destruction of hematopoietic stem and progenitor cells. Autoreactive CD8+ T cells have been reported as the effector cells; however, the mechanisms regulating their cell activation in SAA remain largely unknown. Here, we performed proteomics and metabolomics analyses of plasma and bone marrow supernatant, together with transcriptional analysis of CD8+ T cells from SAA patients and healthy donors, to find key pathways that are involved in pathogenic CD8+ T-cell activation. We identified 21 differential proteins and 50 differential metabolites in SAA patients that were mainly involved in energy metabolism, complement and coagulation cascades, and HIF-1α signaling pathways. Interestingly, we found that these pathways are also enriched in T cells from SAA patients by analyzing available single-cell RNA sequencing data. Moreover, CD8+ T cells from SAA patients contain a highly activated CD38+ subset, which was increased in the bone marrow of SAA patients and a murine model of SAA. This subset presented enriched genes associated with the glycolysis or gluconeogenesis pathway, HIF-1α signaling pathway, and complement associated pathways, all of which were of importance in T-cell activation. In conclusion, our study reveals new pathways that may regulate CD8+ T-cell activation in SAA patients and provides potential therapeutic targets for SAA treatment.

SUBMITTER: You X 

PROVIDER: S-EPMC8764265 | biostudies-literature |

REPOSITORIES: biostudies-literature

Similar Datasets

2021-10-09 | PXD029024 |
| S-EPMC6234374 | biostudies-literature
| S-EPMC6245975 | biostudies-literature
| S-EPMC7010969 | biostudies-literature
| S-EPMC6063510 | biostudies-literature
| S-EPMC9293984 | biostudies-literature
| S-EPMC6762065 | biostudies-literature
| S-EPMC4081983 | biostudies-literature
| S-EPMC3166096 | biostudies-literature
| S-EPMC8327177 | biostudies-literature