title: TIA-1 expression in lymphoid neoplasms. Identification of subsets with cytotoxic T lymphocyte or natural killer cell differentiation.
abstract: TIA-I is a 15-kd cytotoxic granule-associated protein expressed in natural killer (NK) cells and cytotoxic T lymphocytes. TIA-1 expression was evaluated by paraffin immunohistochemistry in 115 T- or NK-cell neoplasms, 45 B-cell neoplasms, and 45 Hodgkin's lymphomas. TIA-1-positive granules were identified within the cytoplasm of neoplastic cells in 6/6 large granular lymphocytic leukemias, 11/11 hepatosplenic T-cell lymphomas, 15/15 intestinal T-cell lymphomas, 6/6 NK-like T-cell lymphomas of no special type, 2/2 NK-cell lymphomas, 8/9 nasal T/NK-cell lymphomas, 7/8 subcutaneous T-cell lymphomas, 4/5 pulmonary T- or NK-cell angiocentric lymphomas (lymphomatoid granulomatosis), 12/19 T-cell anaplastic large-cell lymphomas, 2/12 nodal peripheral T-cell lymphomas, 1/3 CD8+ cutaneous T-cell lymphomas, and 5/38 classical Hodgkin's disease. All B-cell neoplasms, nodular lymphocyte-predominant Hodgkin's disease (7 cases), CD4+ cutaneous T-cell lymphomas (6 cases), adult T-cell leukemia/lymphomas (3 cases), T-cell chronic or prolymphocytic leukemias (3 cases), and T-cell lymphoblastic leukemia/lymphomas (7-cases) were TIA-1 negative. These findings indicate that most large granular lymphocytic leukemias, hepatosplenic T-cell lymphomas, intestinal T-cell lymphomas, NK-like T-cell lymphomas, NK-cell lymphomas, nasal T/NK-cell lymphomas, subcutaneous T-cell lymphomas, pulmonary angiocentric lymphomas of T or NK phenotype, and anaplastic large-cell lymphomas are cytotoxic T-or NK-cell neoplasms.
authors.affiliation: Department of Pathology and Laboratory Medicine, University of Pennsylvania Medical Center, Philadelphia, USA.
authors.forename: R E
authors.initials: RE
authors.lastname: Felgar
authors.forename: W R
authors.initials: WR
authors.lastname: Macon
authors.forename: M C
authors.initials: MC
authors.lastname: Kinney
authors.forename: S
authors.initials: S
authors.lastname: Roberts
authors.forename: T
authors.initials: T
authors.lastname: Pasha
authors.forename: K E
authors.initials: KE
authors.lastname: Salhany
mesh_terms: D001706:Biopsy; D006689:Hodgkin Disease / Q000378:metabolism; D006801:Humans; D007150:Immunohistochemistry; D007694:Killer Cells, Natural / Q000378:metabolism*; D007938:Leukemia / Q000378:metabolism* / Q000473:pathology*; D015448:Leukemia, B-Cell / Q000378:metabolism; D015458:Leukemia, T-Cell / Q000378:metabolism; D008223:Lymphoma / Q000378:metabolism* / Q000473:pathology*; D016393:Lymphoma, B-Cell / Q000378:metabolism; D016399:Lymphoma, T-Cell / Q000378:metabolism; D008565:Membrane Proteins / Q000378:metabolism*; D039102:Poly(A)-Binding Proteins; D011506:Proteins; D016601:RNA-Binding Proteins / Q000378:metabolism*; D000074019:T-Cell Intracellular Antigen-1; D016176:T-Lymphocyte Subsets / Q000378:metabolism*; D013602:T-Lymphocytes, Cytotoxic / Q000378:metabolism*
chemical_list: D008565:Membrane Proteins; D039102:Poly(A)-Binding Proteins; D011506:Proteins; D016601:RNA-Binding Proteins; D000074019:T-Cell Intracellular Antigen-1; C071558:TIA1 protein, human