Gene profile of fibroblasts identify relation of CCL8 with idiopathic pulmonary fibrosisopen access
- Authors
- Lee, Jong-Uk; Cheong, Hyun Sub; Shim, Eun-Young; Bae, Da-Jeong; Chang, Hun Soo; Uh, Soo-Taek; Kim, Young Hoon; Park, Jong-Sook; Lee, Bora; Shin, Hyoung Doo; Park, Choon-Sik
- Issue Date
- 5-Jan-2017
- Publisher
- BioMed Central
- Keywords
- Gene expression; IPF; CCL8; Transcriptome
- Citation
- Respiratory Research, v.18
- Journal Title
- Respiratory Research
- Volume
- 18
- URI
- https://scholarworks.bwise.kr/sch/handle/2021.sw.sch/7842
- DOI
- 10.1186/s12931-016-0493-6
- ISSN
- 1465-9921
1465-993X
- Abstract
- Background: Idiopathic pulmonary fibrosis (IPF) is characterized by the complex interaction of cells involved in chronic inflammation and fibrosis. Global gene expression of a homogenous cell population will identify novel candidate genes. Methods: Gene expression of fibroblasts derived from lung tissues (8 IPF and 4 controls) was profiled, and ontology and functional pathway were analyzed in the genes exhibiting > 2 absolute fold changes with p-values < 0.05. CCL8 mRNA and protein levels were quantified using real-time PCR and ELISA. CCL8 localization was evaluated by immunofluorescence staining. Results: One hundred seventy eight genes differentially expressed and 15 genes exhibited > 10-fold change. Among them, 13 were novel in relation with IPF. CCL8 expression was 22.8-fold higher in IPF fibroblasts. The levels of CCL8 mRNA and protein were 3 and 9-fold higher in 14 IPF fibroblasts than those in 10 control fibroblasts by real-time PCR and ELISA (p = 0.022 and p = 0.026, respectively). The CCL8 concentrations in BAL fluid was significantly higher in 86 patients with IPF than those in 41 controls, and other interstitial lung diseases including non-specific interstitial pneumonia (n = 22), hypersensitivity pneumonitis (n = 20) and sarcoidosis (n = 19) (p < 0.005, respectively). Cut-off values of 2.29 pg/mL and 0.43 pg/mL possessed 80.2 and 70.7% accuracy for the discrimination of IPF from NC and the other lung diseases, respectively. IPF subjects with CCL8 levels > 28.61 pg/mL showed shorter survival compared to those with lower levels (p = 0.012). CCL8 was expressed by a-SMA-positive cells in the interstitium of IPF. Conclusions: Transcriptome analysis identified several novel IPF-related genes. Among them, CCL8 is a candidate molecule for the differential diagnosis and prediction of survival.
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- Appears in
Collections - College of Medicine > Department of Internal Medicine > 1. Journal Articles
- College of Medicine > Department of Internal Medicine > 1. Journal Articles
- College of Medicine > Soonchunhyang Institute of Medicine > 1. Journal Articles
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