Effects of interleukin-17 on murine pulmonary fibroblast proliferation, transformation and collagen synthesis / 南方医科大学学报
Journal of Southern Medical University
; (12): 75-79, 2012.
Article
in Zh
| WPRIM
| ID: wpr-265693
Responsible library:
WPRO
ABSTRACT
<p><b>OBJECTIVE</b>To investigate the effects of interleukin-17 (IL-17) on the proliferation, transformation and collagen synthesis of the lung fibroblasts in mice with bleomycin-induced pulmonary fibrosis.</p><p><b>METHODS</b>In a mouse model of pulmonary fibrosis established by intratracheal administration of 5 mg/kg bleomycin, the dynamic expressions of IL-17/IL-17 receptor (IL-17R) mRNAs were detected by RT-PCR. At 14 days following bleomycin administration, the pulmonary fibroblasts were isolated, cultured and identified. MTT assay was used to assess the proliferation of the pulmonary fibroblasts in response to IL-17 treatment at different concentrations, and RT-PCR and Western blotting were employed to examine the mRNA and protein expressions of α-smooth muscle actin (α-SMA) and types I and III collagen.</p><p><b>RESULTS</b>IL-17/IL-17R mRNA levels were increased obviously in the pulmonary fibroblasts of rats with pulmonary fibrosis, and the highest expressions occurred at 14 days following bleomycin administration. Exogenous IL-17, at the optimal concentration of 50 ng/ml, significantly promoted the proliferation of the pulmonary fibroblasts in primary culture and obviously increased α-SMA expression and types I and III collagen synthesis in the fibroblasts.</p><p><b>CONCLUSION</b>IL-17 can promote the proliferation, transformation, and collagen synthesis of the pulmonary fibroblasts from rats with bleomycin-induced pulmonary fibrosis.</p>
Full text:
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Index:
WPRIM
Main subject:
Pathology
/
Pulmonary Fibrosis
/
Bleomycin
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RNA, Messenger
/
Cells, Cultured
/
Interleukin-17
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Collagen Type I
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Collagen Type III
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Cell Proliferation
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Receptors, Interleukin-17
Limits:
Animals
Language:
Zh
Journal:
Journal of Southern Medical University
Year:
2012
Type:
Article