|
|
||||||||
-Induced Long Pentraxin PTX3 Expression in Human Lung Epithelial Cells via JNK

* Thoracic Surgery Research Laboratory, University Health Network Toronto General Research Institute, Department of Surgery, University of Toronto, Toronto, Ontario, Canada; and
Critical Care Medicine, University of California, San Francisco, CA 94143
Long pentraxin 3 (PTX3), an acute-phase protein, is a newly clarified mediator for innate immunity and inflammation. As a soluble pattern recognition receptor, it has a nonredundant role in antifungal infection. Overexpression of PTX3 worsens acute lung injury. The lung epithelium is a critical factor in defense against pulmonary pathogens; it is also involved in acute inflammatory responses related to tissue injury. However, very little is known about how PTX3 is regulated in the lung epithelium. In this study, we found that i.v. injection of LPS induced PTX3 expression in rat lung alveolar epithelium. Using human lung cell lines and primary epithelial cells, we found that PTX3 expression was significantly up-regulated by TNF-
in a time- and dose-dependent manner, but not by LPS. Pretreatment with either actinomycin D or cycloheximide abolished TNF-
-induced PTX3 expression, indicating the requirement for both transcriptional and translational regulation. The TNF-
-induced PTX3 expression was blocked by SP600125, a JNK-specific inhibitor, but not by the inhibitors against NF-
B, ERKs, or p38 MAPK. Knockdown of either JNK1 or JNK2 with small interfering RNA also significantly reduced the regulated PTX3 expression. Thus, lung epithelial cells appear to be a major local source for PTX3 production, which could be induced in vivo from these cells by LPS or other inflammatory stimuli, and may be an important mediator for host defense and tissue damage. The importance of the JNK pathway for the regulated PTX3 expression may be a potential target for its regulation in the lung.
This article has been cited by other articles:
![]() |
S. J. Park and B. Mehrad Innate Immunity to Aspergillus Species Clin. Microbiol. Rev., October 1, 2009; 22(4): 535 - 551. [Abstract] [Full Text] [PDF] |
||||
![]() |
J. D Thrasher and S. Crawley The biocontaminants and complexity of damp indoor spaces: more than what meets the eyes Toxicology and Industrial Health, October 1, 2009; 25(9-10): 583 - 615. [Abstract] [PDF] |
||||
![]() |
C Wright, M Edelmann, K diGleria, S Kollnberger, H Kramer, S McGowan, K McHugh, S Taylor, B Kessler, and P Bowness Ankylosing spondylitis monocytes show upregulation of proteins involved in inflammation and the ubiquitin proteasome pathway Ann Rheum Dis, October 1, 2009; 68(10): 1626 - 1632. [Abstract] [Full Text] [PDF] |
||||
![]() |
Y.-C. Wu, P.-K. Hsu, K.-C. Su, L.-Y. Liu, C.-C. Tsai, S.-H. Tsai, W.-H. Hsu, Y.-C. Lee, and D.-W. Perng Bile Acid Aspiration in Suspected Ventilator-Associated Pneumonia Chest, July 1, 2009; 136(1): 118 - 124. [Abstract] [Full Text] [PDF] |
||||
![]() |
D. G. Souza, F. A. Amaral, C. T. Fagundes, F. M. Coelho, R. M.E. Arantes, L. P. Sousa, M. M. Matzuk, C. Garlanda, A. Mantovani, A. A. Dias, et al. The Long Pentraxin PTX3 Is Crucial for Tissue Inflammation after Intestinal Ischemia and Reperfusion in Mice Am. J. Pathol., April 1, 2009; 174(4): 1309 - 1318. [Abstract] [Full Text] [PDF] |
||||
![]() |
L. Deban, H. Jarva, M. J. Lehtinen, B. Bottazzi, A. Bastone, A. Doni, T. S. Jokiranta, A. Mantovani, and S. Meri Binding of the Long Pentraxin PTX3 to Factor H: Interacting Domains and Function in the Regulation of Complement Activation J. Immunol., December 15, 2008; 181(12): 8433 - 8440. [Abstract] [Full Text] [PDF] |
||||
![]() |
A. Doni, G. Mantovani, C. Porta, J. Tuckermann, H. M. Reichardt, A. Kleiman, M. Sironi, L. Rubino, F. Pasqualini, M. Nebuloni, et al. Cell-specific Regulation of PTX3 by Glucocorticoid Hormones in Hematopoietic and Nonhematopoietic Cells J. Biol. Chem., October 31, 2008; 283(44): 29983 - 29992. [Abstract] [Full Text] [PDF] |
||||
![]() |
P. S. Tang, M. Mura, R. Seth, and M. Liu Acute lung injury and cell death: how many ways can cells die? Am J Physiol Lung Cell Mol Physiol, April 1, 2008; 294(4): L632 - L641. [Abstract] [Full Text] [PDF] |
||||
![]() |
R. Shaykhiev and R. Bals Interactions between epithelial cells and leukocytes in immunity and tissue homeostasis J. Leukoc. Biol., July 1, 2007; 82(1): 1 - 15. [Abstract] [Full Text] [PDF] |
||||
![]() |
J. Xu, X.-H. Bai, M. Lodyga, B. Han, H. Xiao, S. Keshavjee, J. Hu, H. Zhang, B. B. Yang, and M. Liu XB130, a Novel Adaptor Protein for Signal Transduction J. Biol. Chem., June 1, 2007; 282(22): 16401 - 16412. [Abstract] [Full Text] [PDF] |
||||
![]() |
X. He, B. Han, and M. Liu Long pentraxin 3 in pulmonary infection and acute lung injury Am J Physiol Lung Cell Mol Physiol, May 1, 2007; 292(5): L1039 - L1049. [Abstract] [Full Text] [PDF] |
||||
![]() |
S. Jaillon, G. Peri, Y. Delneste, I. Fremaux, A. Doni, F. Moalli, C. Garlanda, L. Romani, H. Gascan, S. Bellocchio, et al. The humoral pattern recognition receptor PTX3 is stored in neutrophil granules and localizes in extracellular traps J. Exp. Med., April 16, 2007; 204(4): 793 - 804. [Abstract] [Full Text] [PDF] |
||||
![]() |
D. Okutani, B. Han, M. Mura, T. K. Waddell, S. Keshavjee, and M. Liu High-volume ventilation induces pentraxin 3 expression in multiple acute lung injury models in rats Am J Physiol Lung Cell Mol Physiol, January 1, 2007; 292(1): L144 - L153. [Abstract] [Full Text] [PDF] |
||||
![]() |
S. Bozza, F. Bistoni, R. Gaziano, L. Pitzurra, T. Zelante, P. Bonifazi, K. Perruccio, S. Bellocchio, M. Neri, A. M. Iorio, et al. Pentraxin 3 protects from MCMV infection and reactivation through TLR sensing pathways leading to IRF3 activation Blood, November 15, 2006; 108(10): 3387 - 3396. [Abstract] [Full Text] [PDF] |
||||
![]() |
D. Okutani, M. Lodyga, B. Han, and M. Liu Src protein tyrosine kinase family and acute inflammatory responses Am J Physiol Lung Cell Mol Physiol, August 1, 2006; 291(2): L129 - L141. [Abstract] [Full Text] [PDF] |
||||
| HOME | HELP | FEEDBACK | SUBSCRIPTIONS | ARCHIVE | SEARCH | TABLE OF CONTENTS |