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dc.contributor.authorKinlein, Allison
dc.date.accessioned2021-05-28T11:58:13Z
dc.date.available2021-05-28T11:58:13Z
dc.date.issued2021
dc.identifier.urihttp://hdl.handle.net/10713/15826
dc.descriptionHuman Genetics
dc.descriptionUniversity of Maryland, Baltimore
dc.descriptionM.S.
dc.description.abstractNKp30 is a Natural Cytotoxicity Receptor (NCR) expressed by Natural Killer (NK) cells and other lymphocytes. NKp30 is the only evolutionarily conserved NCR found in all jawed vertebrates and it coevolves with its ligand B7-H6. Using sharks as a model, we found NKp30 gene expression in subsets of mature and immature T cells, suggesting that T cells and NK cells share common features in these primitive vertebrates. To understand NKp30’s evolutionary origin, we examined genomic regions containing NKp30 and its homologs in vertebrates in different Classes. We observed that loci in paralogous regions containing NKp30 homologs are well conserved, suggesting the presence of NKp30 ancestors and other linked immune genes before the emergence of vertebrates 550 million years ago. Indeed, the corresponding region is also present in invertebrates. We hypothesize that this genomic region encompassed the “Primordial Immune Complex,” containing genes playing roles in immunity at the origin of vertebrates.
dc.subjectNKp30en_US
dc.subject.meshConserved Sequence--geneticsen_US
dc.subject.meshGenomicsen_US
dc.subject.meshKiller Cells, Naturalen_US
dc.subject.meshNatural Cytotoxicity Triggering Receptor 3--geneticsen_US
dc.titleGenetic and Functional Studies of the Evolutionarily Oldest Natural Killer Receptor, NKp30en_US
dc.typedissertationen_US
dc.date.updated2021-05-21T13:03:09Z
dc.language.rfc3066en
dc.contributor.advisorOhta, Yuko
dc.contributor.orcid0000-0002-3944-2530en_US
refterms.dateFOA2021-05-28T11:58:14Z


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