{"database":"GEO","file_versions":[{"headers":{"Content-Type":["application/json"]},"body":{"files":{"Other":["ftp://ftp.ncbi.nlm.nih.gov/geo/series/GSE344nnn/GSE344996/"]},"type":"primary"},"statusCodeValue":200,"statusCode":"OK"}],"scores":null,"additional":{"omics_type":["Other"],"species":["Mus musculus"],"gds_type":["Other"],"full_dataset_link":["https://www.ncbi.nlm.nih.gov/geo/query/acc.cgi?acc=GSE344996"],"repository":["GEO"],"entry_type":["GSE"],"additional_accession":[]},"is_claimable":false,"name":"A developmentally restricted γδ T cell–IL-17A axis supports mouse heart regeneration [TCR-seq]","description":"Mammalian heart regeneration is restricted to a brief postnatal period during which neonatal-specific mechanisms, including a tightly regulated immune response, enable tissue repair. Here, we show that cardiac injury during the regenerative window induces the accumulation of a distinct γδ T cell population that is absent from older non-regenerative hearts. Following injury, these cells serve as a rapid source of IL- 17A, which shapes the timing and composition of the neonatal immune response. Genetic ablation of γδ T cells or disruption of IL-17 signaling limits heart regeneration and results in dysregulated immune cell infiltration and impaired cardiac function. Mechanistically, our data suggest that γδ T cell-derived IL-17A acts on myeloid cells to initiate a rapid, self-limited inflammatory response that facilitates apoptotic cell clearance and limits sustained inflammation. Our study identifies a developmentally restricted immune axis that supports heart regeneration and advances our understanding of how neonatal-specific immune circuits shape tissue repair.","dates":{"publication":"2026/09/08"},"accession":"GSE344996","cross_references":{"GSM":["GSM9989500","GSM9989501","GSM9989502","GSM9989503","GSM9989504","GSM9989505","GSM9989506","GSM9989507"],"GPL":["16417"],"GSE":["344996"],"taxon":["Mus musculus"]}}