title: Human severe combined immunodeficiency due to a defect in ZAP-70, a T cell tyrosine kinase.
abstract: A homozygous mutation in the kinase domain of ZAP-70, a T cell receptor-associated protein tyrosine kinase, produced a distinctive form of human severe combined immunodeficiency. Manifestations of this disorder included profound immunodeficiency, absence of peripheral CD8+ T cells, and abundant peripheral CD4+ T cells that were refractory to T cell receptor-mediated activation. These findings demonstrate that ZAP-70 is essential for human T cell function and suggest that CD4+ and CD8+ T cells depend on different intracellular signaling pathways to support their development or survival.
authors.affiliation: Department of Pediatrics, University of California, San Francisco 94143-0110.
authors.forename: M E
authors.initials: ME
authors.lastname: Elder
authors.forename: D
authors.initials: D
authors.lastname: Lin
authors.forename: J
authors.initials: J
authors.lastname: Clever
authors.forename: A C
authors.initials: AC
authors.lastname: Chan
authors.forename: T J
authors.initials: TJ
authors.lastname: Hope
authors.forename: A
authors.initials: A
authors.lastname: Weiss
authors.forename: T G
authors.initials: TG
authors.lastname: Parslow
mesh_terms: D000483:Alleles; D000595:Amino Acid Sequence; D000818:Animals; D001483:Base Sequence; D002460:Cell Line; D003001:Cloning, Molecular; D005260:Female; D016368:Frameshift Mutation; D017353:Gene Deletion; D006720:Homozygote; D006801:Humans; D007223:Infant; D008297:Male; D008969:Molecular Sequence Data; D016133:Polymerase Chain Reaction; D011505:Protein-Tyrosine Kinases / Q000235:genetics* / Q000378:metabolism; D011948:Receptors, Antigen, T-Cell / Q000378:metabolism*; D016511:Severe Combined Immunodeficiency / Q000235:genetics* / Q000276:immunology; D015398:Signal Transduction; D016176:T-Lymphocyte Subsets / Q000276:immunology*; D014162:Transfection; D014407:Tumor Cells, Cultured; D051746:ZAP-70 Protein-Tyrosine Kinase
chemical_list: D011948:Receptors, Antigen, T-Cell; D011505:Protein-Tyrosine Kinases; D051746:ZAP-70 Protein-Tyrosine Kinase; C497261:ZAP70 protein, human