Abstract
Background and objective
Acute lung injury or acute respiratory distress syndrome (ALI/ARDS) is a life-threatening respiratory disease. Gp130 is a signal transduction receptor that participates in a variety of essential biological processes. The biological function of gp130 in ALI/ARDS is unclear. This study aims to investigate the roles and potential mechanisms of gp130 in lung injury induced by lipopolysaccharide (LPS).
Methods
The ALI/ARDS mouse model was established using intratracheal LPS administration. Hematoxylin and eosin staining and bronchoalveolar lavage fluid analysis were used to evaluate the degree of lung injury. Cell apoptosis was assessed by TUNEL staining, flow cytometry, and western blot. Then the expression of gp130, IL-6, IL-10, TNF-α, and the JAK1/STAT3 signaling pathway-related proteins was assessed by RT-PCR, western blot, and immunohistochemistry.
Results
The expression of gp130 increased after 24 h of LPS treatment. Inhibiting gp130 improved inflammatory infiltration and alveolar collapsed, decreased IL-6 and TNF-α levels, raised IL-10 levels, and decreased cell apoptosis in LPS-induced mice. Meanwhile, suppressing gp130 reduced the inflammatory response and cell apoptosis in LPS-induced Beas-2B cells. Furthermore, p-JAK1 and p-STAT3 expressions were elevated after LPS stimulation and decreased following gp130 inhibition, suggesting that gp130 may regulate the JAK1/STAT3 signaling pathway in LPS-induced mice and Beas-2B cells.
Conclusion
The findings suggest that gp130 regulates the inflammatory response and cell apoptosis through the JAK1/STAT3 signaling pathway, thereby mitigating LPS-induced lung injury. Gp130 may be a potential therapeutic target for ALI/ARDS.
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Data availability
The datasets generated during the current study are available from the corresponding author on reasonable request.
Abbreviations
- ALI:
-
Acute lung injury
- ARDS:
-
Acute respiratory distress syndrome
- CNTF:
-
Ciliary neurotrophic factor
- DMSO:
-
Dimethyl sulfoxide
- DAPI:
-
4′,6-Diamidino-2-phenylindole
- FBS:
-
Fetal bovine serum
- Gp130:
-
Glycoprotein 130
- HE:
-
Hematoxylin and eosin
- LPS:
-
Lipopolysaccharide
- LIF:
-
Leukemia inhibitory factor
- PBS:
-
Phosphate buffer solution
- PMSF:
-
Phenylmethyl sulfonyl fluoride
- PVDF:
-
Polyvinylidene fluoride
- RT:
-
Room temperature
- SPF:
-
Specific pathogen-free
- TUNEL:
-
TdT-mediated dUTP nick end labeling
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Acknowledgements
This study was supported by the National Natural Science Foundation of China (grant/award number: no. 81873420, no. 82070075).
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Fan Xu: Conceptualization, Methodology, Writing–original draft, Writing–review & editing. Sijiao Wang: Conceptualization, Methodology. Lijuan Hu: Conceptualization, Visualization. Yali Wang: Methodology, Investigation. Lei Zhu: Conceptualization, Supervision, Writing – review & editing. All authors approve the final version to be submitted.
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Xu, F., Wang, S., Wang, Y. et al. Inhibition of gp130 alleviates LPS-induced lung injury by attenuating apoptosis and inflammation through JAK1/STAT3 signaling pathway. Inflamm. Res. 72, 493–507 (2023). https://doi.org/10.1007/s00011-022-01686-9
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DOI: https://doi.org/10.1007/s00011-022-01686-9