Article ; Online: Downregulation of ROR2 attenuates LPS-induced A549 cell injury through JNK and ERK signaling pathways.
Immunity, inflammation and disease
2023 Volume 11, Issue 4, Page(s) e803
Abstract: Background: We aimed to determine whether receptor tyrosine kinase-like orphan receptor 2 (ROR2) is involved in the occurrence of acute lung injury (ALI) by an animal study and explore the effect of ROR2 downregulation on lipopolysaccharide (LPS)- ... ...
Abstract | Background: We aimed to determine whether receptor tyrosine kinase-like orphan receptor 2 (ROR2) is involved in the occurrence of acute lung injury (ALI) by an animal study and explore the effect of ROR2 downregulation on lipopolysaccharide (LPS)-treated human lung carcinoma A549 cells by a cytological study. Methods: Murine models of ALI were successfully constructed by intratracheal instillation of LPS. Meanwhile, A549 cell line stimulated with LPS was used for a cytological study. The expression of ROR2 and its effect on proliferation, cell cycle, apoptosis, and inflammation were detected. Results: It was found that LPS administration markedly inhibited the cell proliferation, resulted in cell cycle arrest at G1 phage, elevated levels of pro-inflammatory cytokines and apoptosis rate of A549 cells. However, LPS-mediated adverse effects mentioned above were significantly ameliorated by downregulation of ROR2 in comparison with LPS treatment. In addition, administration of ROR2 siRNA notably decreased the phosphorylation level of c-Jun N-terminal kinase (JNK) and extracellular signal-regulated kinase (ERK) in LPS-challenged A549 cells. Conclusions: Thus, the present data indicate that downregulation of ROR2 may decrease LPS-induced inflammatory responses and cell apoptosis through inhibiting JNK and ERK signaling pathway, which attenuates ALI. |
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MeSH term(s) | Animals ; Humans ; Mice ; A549 Cells ; Acute Lung Injury/chemically induced ; Acute Lung Injury/metabolism ; Down-Regulation ; Extracellular Signal-Regulated MAP Kinases/genetics ; Extracellular Signal-Regulated MAP Kinases/metabolism ; Lipopolysaccharides/toxicity ; Receptor Tyrosine Kinase-like Orphan Receptors/genetics ; Receptor Tyrosine Kinase-like Orphan Receptors/metabolism ; Signal Transduction |
Chemical Substances | Extracellular Signal-Regulated MAP Kinases (EC 2.7.11.24) ; Lipopolysaccharides ; Receptor Tyrosine Kinase-like Orphan Receptors (EC 2.7.10.1) ; ROR2 protein, human (EC 2.7.10.1) ; Ror2 protein, mouse (EC 2.7.10.1) |
Language | English |
Publishing date | 2023-04-27 |
Publishing country | England |
Document type | Journal Article ; Research Support, Non-U.S. Gov't |
ZDB-ID | 2740382-8 |
ISSN | 2050-4527 ; 2050-4527 |
ISSN (online) | 2050-4527 |
ISSN | 2050-4527 |
DOI | 10.1002/iid3.803 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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