Myeloperoxidase biosynthesis by a human promyelocytic leukemia cell line: insight into myeloperoxidase deficiency
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Myeloperoxidase biosynthesis by a human promyelocytic leukemia cell line: insight into myeloperoxidase deficiency.
The biosynthesis and processing of myeloperoxidase (MPO), a cationic enzyme present in the azurophilic granules of human polymorphonuclear leukocytes (PMNs), were studied in the human promyelocytic leukemia cell line, HL-60. HL-60 cells produce large quantities of enzymatically active MPO that has the same electrophoretic behavior as MPO isolated from normal PMNs. Mature MPO is a glycoprotein o...
متن کاملHereditary myeloperoxidase deficiency.
Subjects with neutrophil myeloperoxidase (MPO) deficiency have been rarely reported. In part this may be due to the lack of a simple screening technique that would detect them. With the routine use of a cytochemical leukocyte differential counter that employs MPO stains, over a 40-mo a period 8 unrelated probands with partial MPO-deficiency and one with complete deficiency were identified. Fami...
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The functional properties of granulocytes in a diabetic patient deficient in myeloperoxidase (MPO) were compared with those of granulocytes in healthy subjects. The granulocytes of this patient had normal phagocytic activity. The microbicidal activity of the granulocytes was partially diminished with regard to Staphylococcus aureus and was almost nil with regard to Candida albicans. Fungicidal ...
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To evaluate the relationship between myeloperoxidase (MPO) gene expression and specific lineages of hematopoietic differentiation, we analyzed expression of the MPO gene in a variety of normal and leukemic human cells. As a first step, we synthesized several oligonucleotide probes and isolated cDNA clones for the MPO gene. MPO expression was detected in most acute myeloid leukemias, and the lev...
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This work was presented in part at the National Meeting of the American Federation for Clinical Research, Atlantic City, N. J., and published in abstract form (1). Received for publication 13 February 1969 antd in revised form 11 April 1969. Although lending support to the suggested bactericidal role of MPO in leukocytes, the data indicate that alternative bactericidal mechanisms, effective in ...
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ژورنال
عنوان ژورنال: Blood
سال: 1986
ISSN: 0006-4971,1528-0020
DOI: 10.1182/blood.v67.4.865.865