Transcriptomics

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Neuropilin-1 is Required for the Suppressive Function of Human Regulatory T Cells


ABSTRACT: Regulatory T cells (Tregs), lymphocytes that suppress immunological reactions, are of great interest for our comprehension of homeostasis and regulation in the immune system and as a therapeutic target in the treatment of both immune-mediated pathologies and reactivation of the immune response in patients with cancer. Understanding the molecular mechanisms by which these cells are regulated in respone to their environment will help to inform clinical strategies targeting Tregs. We hypothesised that Neuropilin-1, a transmembrane co-receptor for ligands of the semaphorin and growth factor families, promotes the suppressive function of human Tregs. Utilising in vitro lentivirus-mediated transduction with shRNA to knock down neuropilin-1 in primary human Tregs, we demonstrated that neuropilin-1 knockdown Tregs were severely impaired in their capacity to suppress cell proliferation in vitro and in their ability to prolong allograft survival in a humanised mouse model of transplantation. While neuropilin-1-KD Tregs exhibited no defects in survival, proliferation and activation upon stimulation in vitro, we hypothesised that loss of NRP1 expression would alter the global gene expression profile of human Tregs, revealing a NRP1-dependent Treg-associated transcriptional signature.

ORGANISM(S): Homo sapiens

PROVIDER: GSE106932 | GEO | 2019/01/01

REPOSITORIES: GEO

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