Objective To investigate the role of hBD-2 gene for the clinical anti-infective therapy. Methods Legionella pneumoniae infection in NCI-H292 cells, using colony formation assay, Western blotting , and ELISA to investgate the related gene changes in the MAPK pathway. Results hBD-2 inhibited Legionella pneumoniae,and Legionella pneumoniae induced secretion of hBD-2 mainly through the JNK and p38 pathway. Conclusions Legionella pneumoniae induces hBD-2 secreted from NCI-H292 cells,which is mainly due to JNK and p38 pathway.
Key words
legionella pneumoniae /
human beta defensin 2 /
mitogen-activatived protein kinase
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
References
[1] Hiemstra P S. The role of epithelial beta-defensins and cathelicidins in host defense of the lung[J]. Exp Lung Res,2007,33(10): 537–542.
[2] Scharf S, Hippenstiel S, Flieger A,et al. Induction of human β-defensin-2 in pulmonary epithelial cells by Legionella pneumophila: involvement of TLR2 and TLR5, p38 MAPK, JNK, NF-κB, and AP-1[J].Am J Physiol Lung Cell Mol Physiol, 2010,298(5):687-695.
[3] Wu M, McClellan S A, Barrett R P, et al. Beta-defensins 2 and 3 together promote resistance to Pseudomonas aeruginosa keratitis[J]. J Immunol,2009,183(12): 8054–8060.
[4] Mendez P, Miranda E, Trejo A,et al. Regulation of human beta-defensin 2 by Mycobacterium bovis bacillus Calmette-Guerin (BCG):involvement of PKC, JNK, and PI3K in human lung epithelial cell line(A549) [J]. Peptides,2008,29(10):1657–1663.
[5] Moranta D,Regueiro V,March C,et al.Klebsiella pneumoniae capsule polysaccharide impedes the expression of beta-defensins by airway epithelial cells[J].Infect Immun, 2010 , 78(3):1135-1146.
[6] Hakmo L, Jeong H C, JAE Chul Lee, et al. Granulocyte-Derived Cationic Peptide Enhances Homing and Engraftment of Bone Marrow Stem Cells after Transplantation[J]. Lab Anim Res,2011,27(2):133-140.