Abstract: The neuroblastoma immunopeptidome is enriched with peptides derived from proteins essential for tumorigenesis including the unmutated peptide QYNPIRTTF (SEQ ID NO: 1) discovered on HLA-A*24:02 which is derived from the neuroblastoma dependency gene and master transcriptional regulator PHOX2B. To target QYNPIRTTF, peptide-centric chimeric antigen receptors (PC-CARs) were developed via a counter panning strategy using predicted potentially cross-reactive peptides. Informed by computational modeling, PHOX2B peptide¬ centric CARs were demonstrated to also recognize QYNPIRTTF (SEQ ID NO: 1) presented by HLA-A*23:01 and the highly divergent HLA-B*14:02. Potent and specific killing of neuroblastoma cells expressing these HEAs in vitro was shown along with complete tumor regression in mice.

Abstract: The present disclosure provides methods and compositions for SARS-CoV-2 vaccination strategy based on identification of both highly conserved regions of the virus and newly acquired adaptations that are presented by MHC class I and It across the vast majority of the population, are highly dissimilar from the human proteome, and are predicted B cell epitopes. This vaccination strategy specifically targets unique vulnerabilities of SARS-CoV-2 and should engage a robust adaptive immune response m the vast majority of the human population.

Abstract: The present disclosure is directed to genetically engineered cell lines which include a modification to knockout a portion of the TP53 gene. Embodiments disclosed herein provide aspects of the knockout cell lines, methods for producing the knockout cell lines, in vitro assays using the knockout cell lines, and kits including the knockout cell lines. In certain implementations, the embodiments can provide doctors and patients improved tools for determining a treatment or for comparing treatments for patients having tumors that include a TP53 mutation.