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J Biol Chem, Vol. 275, Issue 20, 15200-15206, May 19, 2000
From the Phorbol 12-myristate 13-acetate (PMA) induces
differentiation of human leukemic HL-60 cells into cells with
macrophage-like characteristics and enhances the susceptibility of
HL-60 cells to the Helicobacter pylori VacA toxin (de
Bernard, M., Moschioni., M., Papini, E., Telford, J. L., Rappuoli,
R., and Montecucco, C. (1998) FEBS Lett. 436, 218-222). We
examined the mechanism by which HL-60 cells acquire sensitivity to
VacA, in particular, looking for expression of RPTP
Morphologic Differentiation of HL-60 Cells Is Associated with
Appearance of RPTP
and Induction of Helicobacter pylori
VacA Sensitivity*
,
,
§,
§,
,
,
,
¶¶
Department of Bacteriology, Institute of
Tropical Medicine, Nagasaki University, § Department of
Applied Chemistry, Faculty of Engineering, Nagasaki University,
¶ Department of Biochemistry, Institute of Tropical Medicine,
Nagasaki University, Nagasaki 8528523, Japan, the
Department of
Pathology, Nagasaki University Hospital, Nagasaki 8528501, Japan, the
** Department of Microbiology, Kansai Medical University, Moriguchi
5708506, Japan, the 
Department of Tumor
Immunology, Dana-Farber Cancer Institute, Boston, Massachusetts 02115, and the §§ Pulmonary-Critical Care Medicine
Branch, NHKBI, National Institutes of Health,
Bethesda, Maryland 20892
, a VacA-binding
protein postulated to be the VacA receptor (Yahiro, K.,
Niidome, T., Kimura, M., Hatakeyama, T., Aoyagi, H.,
Kurazono, H., Imagawa, K., Wada, A., Moss, J., and Hirayama, T. (1999)
J. Biol. Chem. 274, 36693-36699). PMA induced
expression of RPTP
mRNA and protein as determined by RNase
protection assay and indirect immunofluorescence studies, respectively.
Vitamin D3 and interferon-
, which stimulate
differentiation of HL-60 cells into monocyte-like cells, also induced
VacA sensitivity and expression of RPTP
mRNA, whereas 1.2%
Me2SO and retinoic acid, which stimulated the maturation of
HL-60 into granulocyte-like cells, did not. RPTP
antisense
oligonucleotide inhibited induction of VacA sensitivity and expression
of RPTP
. Double immunostaining studies also indicated that newly
expressed RPTP
colocalized with VacA in PMA-treated HL-60 cells. In
agreement with these data, BHK-21 cells, which are insensitive to VacA,
when transfected with the RPTP
cDNA, acquired VacA sensitivity.
All data are consistent with the conclusion that acquisition of VacA
sensitivity by PMA-treated HL-60 cells results from induction of
RPTP
, a protein that functions as the VacA receptor.
*
This work was supported by grants-in-aid for Scientific
Research and for International Scientific Research (Joint Research) from the Ministry of Education, Science, and Culture of Japan, and
funds from the Ohyama Health Foundation.The costs of publication of this
article were defrayed in part by the
payment of page charges. The article
must therefore be hereby marked
"advertisement" in accordance with 18 U.S.C. Section
1734 solely to indicate this fact.
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