GSE119750
Selective expansion of myeloid and NK cells in humanized mice yields human-like vaccine responses (Experiment 2: scRNA-seq)
We performed an in-depth characterization and comparison of the immune system diversity and complexity in the spleen of conventional NRG-HIS mice and NFA2-HIS/Ftl3LG mice upon YFV-17D infection, a live-attenuated virus that induce that induce potent protective immunity in human. To do so, we employed Seq-Well, a recently developed platform for massively parallel single-cell RNA-Seq (scRNA-Seq), on splenocytes from NRG-HIS mice and NFA2-HIS/Flt3LG mice at six-weeks post YFV-17D infection. Our data provide an in-depth view of the cellular composition of the HIS in conventional and second-generation humanized mice. They also highlight the enhanced engraftment and functionality of the critical role of the myeloid and NK cell compartment in NFA2-HIS/Flt3LG mice, which is likely critical in promoting an enhanced transcriptomic, cellular and humoral response to YFV-17D. Overall design: We isolated splenocytes from two NRG-HIS mice and two NFA2-HIS/Flt3LG mice at six-weeks post YFV-17D infection and sorted these cells by human CD45 (hCD45) or human CD33 (hCD33) expression. We ran parallel Seq-Well arrays for each sorted population, enabling both unbiased characterization of the relative abundances of all lymphocytes, as well as a deeper examination of the cellular diversity within the myeloid compartment.