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Opsin3 regulates cell proliferation, migration, and apoptosis in lung adenocarcinoma via GPX3 pathway
Xiaojia Li1, Yu Wang2, Yan Liu2
1Department of Medical Oncology, Harbin Medical University Cancer Hospital, Harbin, China.
Abstract:
Despite recent progress in understanding lung adenocarcinoma (LUAD) and the emergence of new therapeutic strategies, LUAD continues to be one of the deadliest lung cancer types, with a five-year survival rate of under 5%. Opsin3 (OPN3), a member of the G protein-coupled receptor superfamily, has been linked to various cancer-related processes, including tumor progression and therapy resistance. However, its specific role in LUAD remains insufficiently investigated. This study aimed to explore OPN3's regulatory functions in LUAD and evaluate its potential as a therapeutic target. OPN3 expression in LUAD cells was assessed using quantitative PCR, Western blotting, and immunohistochemistry. The effects of OPN3 on cell migration and invasion were evaluated through wound healing and transwell assays. Additionally, the influence of OPN3 on cell cycle progression and signaling pathways in vivo-critical for cellular responses to external stimuli-was examined. Pathway enrichment analysis revealed significant disruption of genes associated with glutathione metabolism. Notably, a strong correlation between OPN3 expression and the regulation of Glutathione Peroxidase 3 (GPX3), a key enzyme in this metabolic pathway, was identified. Our results demonstrate that OPN3 is markedly overexpressed in LUAD tissues relative to normal lung tissues. Silencing OPN3 via siRNA significantly diminished the malignant features of LUAD cells, including proliferation, migration, and invasion. In contrast, OPN3 overexpression enhanced these malignant characteristics, indicating its involvement in tumor progression. Moreover, an inverse relationship between OPN3 expression and GPX3 levels was observed, suggesting that OPN3 may drive LUAD progression through the GPX3 pathway. This study offers new insights into the function of OPN3 in LUAD and suggests that targeting the OPN3-GPX3 axis could provide a promising therapeutic strategy for LUAD patients.
Insights
Opsin3 (OPN3) is overexpressed in lung adenocarcinoma (LUAD), promoting tumor growth and spread. Targeting the OPN3-Glutathione Peroxidase 3 (GPX3) pathway may offer a new therapeutic strategy for LUAD patients.
Area of Science:
- Oncology
- Molecular Biology
- Biochemistry
Background:
- Lung adenocarcinoma (LUAD) remains a leading cause of cancer mortality despite advances in treatment.
- Opsin3 (OPN3), a G protein-coupled receptor, is implicated in cancer but its role in LUAD is unclear.
- Understanding OPN3's function is crucial for developing novel LUAD therapies.
Purpose of the Study:
- To investigate the regulatory role of OPN3 in lung adenocarcinoma (LUAD).
- To assess OPN3 as a potential therapeutic target for LUAD.
- To elucidate the molecular mechanisms underlying OPN3's function in LUAD progression.
Main Methods:
- Quantitative PCR, Western blotting, and immunohistochemistry were used to assess OPN3 expression.
- Wound healing and transwell assays evaluated the effects of OPN3 on cell migration and invasion.
- Pathway enrichment analysis identified associations with glutathione metabolism and Glutathione Peroxidase 3 (GPX3).
Main Results:
- OPN3 was significantly overexpressed in LUAD tissues compared to normal lung tissues.
- OPN3 knockdown reduced LUAD cell proliferation, migration, and invasion.
- OPN3 overexpression enhanced malignant phenotypes, inversely correlating with GPX3 levels.
Conclusions:
- OPN3 promotes LUAD progression, likely via the GPX3 pathway.
- The OPN3-GPX3 axis represents a potential therapeutic target for lung adenocarcinoma.
- Targeting OPN3 could offer a novel strategy to combat LUAD.
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