Luminol‐dependent chemiluminescence of human phagocyte cell lines: comparison between DMSO differentiated PLB 985 and HL 60 cells |
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Authors: | Avraham Ashkenazi Robert. S. Marks |
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Affiliation: | 1. Department of Biotechnology Engineering, Ben‐Gurion University of the Negev, PO Box 653, Beer‐Sheva 84105, Israel;2. National Institute for Biotechnology in the Negev, Ben‐Gurion University of the Negev, PO Box 653, Beer‐Sheva 84 3. 105, Israel;4. ILSE Katz center for Meso and Nanoscale Science and Technology, PO Box 653, Beer Sheva 84105, Israel |
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Abstract: | The human promyelocytic leukemia HL 60 and PLB 985 cell lines can differentiate into terminally mature neutrophil‐like cells via dimethyl sulfoxide (DMSO) induction. In this study the luminol‐dependent chemiluminescence (LCL) of both neutrophil‐like cells was analayzed and compared in response to phorbol myristate acetate (PMA) and opsonized zymosan (OZ) stimulants. It was shown that, like human blood neutrophils, both neutrophil‐like cells expressed high levels of CD11b, but unlike human blood neutrophils these cells almost lack LCL‐detectable intracellular oxidase activity. By studying the pattern of activation to OZ and PMA and priming with GM‐CSF, we concluded that there is no difference between the percentage of differentiation and function of DMSO‐induced HL 60 and PLB 985. However, the LCL capacity (area under the curve) of DMSO induced PLB 985 cells was higher than that of HL 60 cells in response to both PMA and OZ, which implies a higher capacity to generate reactive oxygen species in PLB 985 cells. Copyright © 2009 John Wiley & Sons, Ltd. |
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Keywords: | HL 60 PLB 985 neutrophils phorbol myristate acetate (PMA) opsonized zymosan (OZ) chemiluminescence |
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