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PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1989-4-28
pubmed:abstractText
Immunoperoxidase electron microscopy revealed intracellular expression of CD2, CD13, and CD25 antigens in a unique human T lymphotropic virus type I infected cell line, TI-CL. This cell line is thought to be derived from cord mononuclear cells in the bifurcation stage of T cell and myelomonocytic lineage, based on cytochemical, immunologic, and molecular genetic analyses. Each antigen expression was observed on the plasma membranes, the cisternae of rough endoplasmic reticulum, and the perinuclear cisternae. Surface and cytoplasmic expression of CD25 antigen in adult T cell leukemia/lymphoma cells have been reported, but similar events concerning CD2 and CD13 antigens have not been described previously. CD13 antigen is a marker of myelomonocytic lineage, and biochemical analyses have demonstrated that monoclonal antibodies belonging to CD13 precipitated two glycoprotein molecules of 130,000 and 150,000 molecular weight and that the former molecule (gp130) is the precursor protein of the latter (gp150). In our findings, CD13-positive reaction in the cisternae of rough endoplasmic reticulum and the perinuclear cisternae may correspond to the precursor protein of CD13. CD2 antigen, a 50 kilodalton sheep erythrocyte rosette receptor protein, is the early T lineage antigen and plays an important role in T cell activation. The detection of CD2 antigen on the cell surface and in the cytoplasm may morphologically confirm that this antigen is synthesized in the cytoplasm and inserted into the plasma membrane.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Mar
pubmed:issn
0023-6837
pubmed:author
pubmed:issnType
Print
pubmed:volume
60
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
370-4
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed-meshheading:2564449-Antibodies, Monoclonal, pubmed-meshheading:2564449-Antigens, CD13, pubmed-meshheading:2564449-Antigens, CD2, pubmed-meshheading:2564449-Antigens, Differentiation, Myelomonocytic, pubmed-meshheading:2564449-Antigens, Differentiation, T-Lymphocyte, pubmed-meshheading:2564449-Cell Line, pubmed-meshheading:2564449-Cell Membrane, pubmed-meshheading:2564449-Cytoplasm, pubmed-meshheading:2564449-Endoplasmic Reticulum, pubmed-meshheading:2564449-Female, pubmed-meshheading:2564449-Human T-lymphotropic virus 1, pubmed-meshheading:2564449-Humans, pubmed-meshheading:2564449-Immunoenzyme Techniques, pubmed-meshheading:2564449-Leukemia, T-Cell, pubmed-meshheading:2564449-Male, pubmed-meshheading:2564449-Microscopy, Electron, pubmed-meshheading:2564449-Receptors, Immunologic, pubmed-meshheading:2564449-Receptors, Interleukin-2
pubmed:year
1989
pubmed:articleTitle
Surface and cytoplasmic expression of CD2, CD13, and CD25 antigens in human T lymphotropic virus type I infected cell line. An immunoelectron microscopic study.
pubmed:affiliation
Second Department of Internal Medicine, Faculty of Medicine, Mie University, Tsu-City, Japan.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't