Phagocytosis of Streptococcus pyogenes by all-trans retinoic acid-differentiated HL-60 cells: roles of azurophilic granules and NADPH oxidase.
Nordenfelt, Pontus LU
; Bauer, Susanne
LU
; Lönnbro, Per
LU
and Tapper, Hans
LU
(2009)
In PLoS ONE
4(10).
- Abstract
- BACKGROUND: New experimental approaches to the study of the neutrophil phagosome and bacterial killing prompted a reassessment of the usefulness of all-trans retinoic acid (ATRA)-differentiated HL-60 cells as a neutrophil model. HL-60 cells are special in that they possess azurophilic granules while lacking the specific granules with their associated oxidase components. The resulting inability to mount an effective intracellular respiratory burst makes these cells more dependent on other mechanisms when killing internalized bacteria. METHODOLOGY/PRINCIPAL FINDINGS: In this work phagocytosis and phagosome-related responses of ATRA-differentiated HL-60 cells were compared to those earlier described in human neutrophils. We show that... (More)
- BACKGROUND: New experimental approaches to the study of the neutrophil phagosome and bacterial killing prompted a reassessment of the usefulness of all-trans retinoic acid (ATRA)-differentiated HL-60 cells as a neutrophil model. HL-60 cells are special in that they possess azurophilic granules while lacking the specific granules with their associated oxidase components. The resulting inability to mount an effective intracellular respiratory burst makes these cells more dependent on other mechanisms when killing internalized bacteria. METHODOLOGY/PRINCIPAL FINDINGS: In this work phagocytosis and phagosome-related responses of ATRA-differentiated HL-60 cells were compared to those earlier described in human neutrophils. We show that intracellular survival of wild-type S. pyogenes bacteria in HL-60 cells is accompanied by inhibition of azurophilic granule-phagosome fusion. A mutant S. pyogenes bacterium, deficient in M-protein expression, is, on the other hand, rapidly killed in phagosomes that avidly fuse with azurophilic granules. CONCLUSIONS/SIGNIFICANCE: The current data extend our previous findings by showing that a system lacking in oxidase involvement also indicates a link between inhibition of azurophilic granule fusion and the intraphagosomal fate of S. pyogenes bacteria. We propose that differentiated HL-60 cells can be a useful tool to study certain aspects of neutrophil phagosome maturation, such as azurophilic granule fusion. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1500620
- author
- Nordenfelt, Pontus
LU
; Bauer, Susanne
LU
; Lönnbro, Per
LU
and Tapper, Hans
LU
- organization
- publishing date
- 2009
- type
- Contribution to journal
- publication status
- published
- subject
- in
- PLoS ONE
- volume
- 4
- issue
- 10
- article number
- e7363
- publisher
- Public Library of Science (PLoS)
- external identifiers
-
- wos:000270593800032
- pmid:19806211
- scopus:70350015388
- pmid:19806211
- ISSN
- 1932-6203
- DOI
- 10.1371/journal.pone.0007363
- language
- English
- LU publication?
- yes
- id
- 17aeb56d-c3d4-4159-a33e-ccea8bd641eb (old id 1500620)
- alternative location
- http://www.ncbi.nlm.nih.gov/pubmed/19806211?dopt=Abstract
- date added to LUP
- 2016-04-04 09:39:15
- date last changed
- 2023-03-12 19:03:29
@article{17aeb56d-c3d4-4159-a33e-ccea8bd641eb,
abstract = {{BACKGROUND: New experimental approaches to the study of the neutrophil phagosome and bacterial killing prompted a reassessment of the usefulness of all-trans retinoic acid (ATRA)-differentiated HL-60 cells as a neutrophil model. HL-60 cells are special in that they possess azurophilic granules while lacking the specific granules with their associated oxidase components. The resulting inability to mount an effective intracellular respiratory burst makes these cells more dependent on other mechanisms when killing internalized bacteria. METHODOLOGY/PRINCIPAL FINDINGS: In this work phagocytosis and phagosome-related responses of ATRA-differentiated HL-60 cells were compared to those earlier described in human neutrophils. We show that intracellular survival of wild-type S. pyogenes bacteria in HL-60 cells is accompanied by inhibition of azurophilic granule-phagosome fusion. A mutant S. pyogenes bacterium, deficient in M-protein expression, is, on the other hand, rapidly killed in phagosomes that avidly fuse with azurophilic granules. CONCLUSIONS/SIGNIFICANCE: The current data extend our previous findings by showing that a system lacking in oxidase involvement also indicates a link between inhibition of azurophilic granule fusion and the intraphagosomal fate of S. pyogenes bacteria. We propose that differentiated HL-60 cells can be a useful tool to study certain aspects of neutrophil phagosome maturation, such as azurophilic granule fusion.}},
author = {{Nordenfelt, Pontus and Bauer, Susanne and Lönnbro, Per and Tapper, Hans}},
issn = {{1932-6203}},
language = {{eng}},
number = {{10}},
publisher = {{Public Library of Science (PLoS)}},
series = {{PLoS ONE}},
title = {{Phagocytosis of Streptococcus pyogenes by all-trans retinoic acid-differentiated HL-60 cells: roles of azurophilic granules and NADPH oxidase.}},
url = {{https://lup.lub.lu.se/search/files/5381680/1508712.pdf}},
doi = {{10.1371/journal.pone.0007363}},
volume = {{4}},
year = {{2009}},
}