Osteopontin Expression in the Brain Triggers Localized Inflammation and Cell Death When Immune Cells Are Activated by Pertussis Toxin
Joint Authors
Marcondes, Maria Cecilia Garibaldi
Fox, Howard
Ojakian, Ryan
Bortell, Nikki
Flynn, Claudia
Conti, Bruno
Source
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-11-24
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
Upregulation of osteopontin (OPN) is a characteristic of central nervous system pathologies.
However, the role of OPN in inflammation is still controversial, since it can both prevent cell death and induce the migration of potentially damaging inflammatory cells.
To understand the role of OPN in inflammation and cell survival, we expressed OPN, utilizing an adenoviral vector, in the caudoputamen of mice deficient in OPN, using beta-galactosidase- (β-gal-) expressing vector as control.
The tissue pathology and the expression of proinflammatory genes were compared in both treatments.
Interestingly, inflammatory infiltrate was only found when the OPN-vector was combined with a peripheral treatment with pertussis toxin (Ptx), which activated peripheral cells to express the OPN receptor CD44v6.
Relative to β-gal, OPN increased the levels of inflammatory markers, including IL13Rα1, CXCR3, and CD40L.
In Ptx-treated OPN KOs, apoptotic TUNEL+ cells surrounding the OPN expression site increased, compared to β-gal.
Together, these results show that local OPN expression combined with a peripheral inflammatory stimulus, such as Ptx, may be implicated in the development of brain inflammation and induction of cell death, by driving a molecular pattern characteristic of cytotoxicity.
These are characteristics of inflammatory pathologies of the CNS in which OPN upregulation is a hallmark.
American Psychological Association (APA)
Marcondes, Maria Cecilia Garibaldi& Ojakian, Ryan& Bortell, Nikki& Flynn, Claudia& Conti, Bruno& Fox, Howard. 2014. Osteopontin Expression in the Brain Triggers Localized Inflammation and Cell Death When Immune Cells Are Activated by Pertussis Toxin. Mediators of Inflammation،Vol. 2014, no. 2014, pp.1-12.
https://search.emarefa.net/detail/BIM-1043503
Modern Language Association (MLA)
Marcondes, Maria Cecilia Garibaldi…[et al.]. Osteopontin Expression in the Brain Triggers Localized Inflammation and Cell Death When Immune Cells Are Activated by Pertussis Toxin. Mediators of Inflammation No. 2014 (2014), pp.1-12.
https://search.emarefa.net/detail/BIM-1043503
American Medical Association (AMA)
Marcondes, Maria Cecilia Garibaldi& Ojakian, Ryan& Bortell, Nikki& Flynn, Claudia& Conti, Bruno& Fox, Howard. Osteopontin Expression in the Brain Triggers Localized Inflammation and Cell Death When Immune Cells Are Activated by Pertussis Toxin. Mediators of Inflammation. 2014. Vol. 2014, no. 2014, pp.1-12.
https://search.emarefa.net/detail/BIM-1043503
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1043503