DIFFERENTIAL EXPRESSION OF TRAP ISOENZYME IN B-CLL CELLS TREATED WITH DIFFERENT INDUCERS

被引：6

作者：

GIGNAC, SM ^{[1
]}

BUSCHLE, M ^{[1
]}

ROBERTS, RM ^{[1
]}

PETTIT, GR ^{[1
]}

HOFFBRAND, AV ^{[1
]}

DREXLER, HG ^{[1
]}

机构：

[1] ROYAL FREE HOSP,DEPT HAEMATOL,LONDON,ENGLAND

来源：

LEUKEMIA & LYMPHOMA | 1990年 / 3卷 / 01期

基金：

英国惠康基金; 美国国家卫生研究院;

关键词：

B-CLL; Induced differentiation; Isoenzyme; TRAP;

D O I：

10.3109/10428199009050971

中图分类号：

R73 [肿瘤学];

学科分类号：

100214 ;

摘要：

Purified B-cells from normal tonsils and from the peripheral blood of eight patients with B-chronic lymphocytic leukemia (B-CLL) were treated in vitro with the protein kinase C (PKC) activators TPA, Bryostatin 1 (Bryo), mezerein, with the calcium ionophore A23187, and with the cytokines interleukin-1/2, interferon-alpha/gamma, tumor necrosis factor. The induction of the lysosomal enzyme tartrate-resistant acid phosphatase (TRAP) was examined at the RNA (by Northern blotting analysis) and the protein level (by isoelectric focusing). TRAP mRNA and protein were induced by treatment with PKC activators while the combination of PKC stimulator and calcium ionophore was not effective, TRAP mRNA was detected as early as 2 hours after initiation of the culture. This induction of positivity for TRAP which is the enzymatic hallmark of hairy cell leukemia (HCL) by TPA or Bryo is consistent with the previously reported acquisition of HCL-type cellular features in TPA-driven CLL cells; CLL cells exposed to the double stimulus of TPA or Bryo + A23187 have previously been described to differentiate to plasmacytoid cells which is in accord with their remaining TRAP negative. The present data provide evidence that 1) B-CLL cells can be induced by direct stimulation of PKC to convert to HCL-type cells; 2) TPA/Bryo-exposed B-CLL cells display phenotypes different from those of cells treated with combinations containing calcium ionophore; 3) the phosphoinositol signal transduction pathway distal to PKC can be activated effectively in B-CLL cells; 4) Bryo, a new natural PKC activator, induces responses in CLL similar to those caused by TPA; 5) TRAP is an inducible indicator of cellular activation. These observations provide support for the idea that HCL and HCL-like cells might differentiate along a separate branch of B-cell lineage and might represent mature "activation end stage" cells. © 1990 Informa UK Ltd All rights reserved: reproduction in whole or part not permitted.

引用

页码：19 / 29

页数：11

共 38 条

[1]

Crockard A., Scott C.S., Cytochemistry of normal and malignant lymphocytes, Leukaemia Cytochemistry, pp. 283-294, (1989)

[2]

Yam L.T., Li C.Y., Lam K.W., Tartrate-resistance acid phosphatase isoenzyme in the reticulum cells of leukemic reticulo endotheliosis, New Engl. J. Med, 284, pp. 357-360, (1971)

[3]

Li C.Y., Yam L.T., Lam K.W., Acid phosphatase isoenzyme in human leukocytes in normal and pathologic conditions, J. Histochem. Cytochem, 18, pp. 473-481, (1970)

[4]

Li C.Y., Yam L.T., Lam K.W., Studies of acid phosphatase isoenzymes in human leukocytes. Demonstration of isoenzyme cell specificity, J. Histochem. Cytochem, 18, pp. 901-910, (1970)

[5]

Radzun H.J., Kreipe H., Parwaresch M.R., Tartrate-resistant acid phosphatase as a differentiation marker for the human mononuclear phagocyte system, Hematol. Oncol, 1, pp. 321-327, (1983)

[6]

Drexler H.G., Gaedicke G., Minowada J., Occurrence of particular isoenzymes in fresh and cultured leukemia-lymphoma cells. I. Tartrate-resistant acid phosphatase isoenzyme, Cancer, 57, pp. 1776-1782, (1986)

[7]

Flandrin G., Daniel M.T., Catovsky D., Cytochemistry in the classification of leukemias, The Leukemic Cell, pp. 29-48, (1981)

[8]

Recommended methods for cytological procedures in haematology, Clin. Lab. Haematol, 7, pp. 55-74, (1985)

[9]

von Heyden H.W., Weber R., Nerke O., Saal J.G., Stein W., Isoenzymes of acid phosphatase in blood cells of normal subjects and patients with leukemia, Blut, 35, pp. 295-303, (1977)

[10]

Scott C.S., Drexler H.G., Scott C.S., Isoenzyme studies of normal and leukaemic haemopoietic cells, Leukaemia Cytochemistry, pp. 295-341, (1989)

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