PHENOTYPES OF NULL LYMPHOID-CELLS IN HUMAN-BLOOD

被引:31
作者
NIAUDET, P
GREAVES, M
HORWITZ, D
机构
[1] IMPERIAL CANC RES FUND, MEMBRANE IMMUNOL LAB, LONDON WC1A 3PX, ENGLAND
[2] CLIN RES CTR, DIV CELLULAR PATHOL, HARROW HA1 3UJ, MIDDLESEX, ENGLAND
关键词
D O I
10.1111/j.1365-3083.1979.tb03178.x
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
F(ab′)2 antibody fragments of heteroantisera directed againsi p28,33 (or ‘Ia‐like’ antigen, T‐cell antigen(s) (T), myeloid antigen (M), and immunoglohulin have been used along with rosetting techniques to analyse the antigenic heterogeneity of ‘null’ or ‘unclassified’ lymphoid cells purified ‘negaiively’ from human blood by E rosette depletion of T ceils and B removal on an anti‐immunoglobulin immunoabsorbent. The results confirm that considerable heterogeneity exists wilhin the ‘null’ cell population: the majority of cells are p28,33+ and Fcγ‐receptor‐positive, and a proportion but not all of these p28,33+, Fcγ+ cells are also C3‐receptor‐positive but negative for the other heteroanligens (T and M), 2–6% were ‘pre‐B’ by the criteria of immuno‐fluorescent staining for cytoptasmic IgM in the absence of detectable cell surface Ig. 1–3% stained intensely with anti‐IgM. anti‐IgG or anti‐IgA, or anti‐κ plus anti‐λ and were presumed to be plasma cells or their immediate precursors. No null cells siained wiih antibody to terminal deoxynucleotidyl transferase enzyme, a marker for early T lineage cells, and less than 1% expressed an acute (‘non‐T, non‐B’) lymphoblastic‐leukaemia‐associalcd membrane antigen which is believed to be an ‘early’ lymphoid lineage differentiation marker. A minor subpopulation made sheep ‘E’ rosettes, and another made mouse ‘E’ roseites afier neuraminidase preireatment of the lymphoid cells. A small proportion of ‘lymphoid’, ‘null cells’ were reactive with an anti‐myclomonocytic (M) antibody. It is suggested that ‘null’ lymphoid cells in blood are heterogeneous and that most are not immature T or B precursors but either a relatively mature B lymphocyte population with a very low density of membrane immunoglohulin or a distinct non‐T, non‐B cell type. Copyright © 1979, Wiley Blackwell. All rights reserved
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页码:387 / 393
页数:7
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