NDLI: Bacterial pathogens modulate an apoptosis differentiation program in human neutrophils

Content Provider	PubMed Central
Author	Kobayashi, Scott D. Braughton, Kevin R. Whitney, Adeline R. Voyich, Jovanka M. Schwan, Tom G. Musser, James M. Deleo, Frank R.
Copyright Year	2003
Abstract	Human polymorphonuclear leukocytes (PMNs or neutrophils) are essential to the innate immune response against bacterial pathogens. Recent evidence suggests that PMN apoptosis facilitates resolution of inflammation during bacterial infection. Although progress has been made toward understanding apoptosis in neutrophils, very little is known about transcriptional regulation of this process during bacterial infection. To gain insight into the molecular processes that facilitate resolution of infection, we measured global changes in PMN gene expression during phagocytosis of a diverse group of bacterial pathogens. Genes encoding key effectors of apoptosis were up-regulated, and receptors critical to innate immune function were down-regulated during apoptosis induced by phagocytosis of Burkholderia cepacia, Borrelia hermsii, Listeria monocytogenes, Staphylococcus aureus, and Streptococcus pyogenes. Importantly, we identified genes that comprise a common apoptosis differentiation program in human PMNs after phagocytosis of pathogenic bacteria. Unexpectedly, phagocytosis of Str. pyogenes induced changes in neutrophil gene expression not observed with other pathogens tested, including down-regulation of 21 genes involved in responses to IFN. Compared with other bacteria, PMN apoptosis was significantly accelerated by Str. pyogenes and was followed by necrosis. Thus, we hypothesize that there are two fundamental outcomes for the interaction of bacterial pathogens with neutrophils: (i) phagocytosis of bacteria induces an apoptosis differentiation program in human PMNs that contributes to resolution of bacterial infection, or (ii) phagocytosis of microorganisms such as Str. pyogenes alters the apoptosis differentiation program in neutrophils, resulting in pathogen survival and disease.
Related Links	http://dx.doi.org/10.1073/pnas.1833375100
Ending Page	10953
Page Count	6
Starting Page	10948
File Format	PDF
ISSN	00278424
e-ISSN	10916490
Journal	Proceedings of the National Academy of Sciences of the United States of America
Issue Number	19
Volume Number	100
Language	English
Publisher	National Academy of Sciences
Publisher Date	2003-09-16
Access Restriction	Open
Rights Holder	National Academy of Sciences
Subject Keyword	General Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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