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06.12.2024 | Original Article

Vitexin mitigates oxidative stress, mitochondrial damage, pyroptosis and regulates small nucleolar RNA host gene 1/DNA methyltransferase 1/microRNA-495 axis in sepsis-associated acute lung injury

verfasst von: Almaz Zaki, Mohd Mohsin, Salman Khan, Aman Khan, Shaniya Ahmad, Amit Verma, Shakir Ali, Tasneem Fatma, Mansoor Ali Syed

Erschienen in: Inflammopharmacology

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Abstract

Aim of the study

This study examined vitexin’s effect on sepsis-induced acute lung injury. We used network pharmacology and in vivo and in vitro experiments were performed to elucidate vitexin’s role in preventing pyroptosis and regulating small nucleolar RNA host gene 1 (SNHG1)/DNA methyltransferase 1 (DNMT1)/microRNA-495 (miR-495 axis.

Materials and methods

We developed an acute lung injury model using C57BL/6 mice and MLE-12 cells. Through a combination of network pharmacology and in vitro screening, vitexin was identified as the most promising anti-inflammatory compound. Multiple techniques such as western blotting, real-time PCR, Hematoxylin and eosin staining, immunohistochemistry, and TUNEL assay were used. Additionally, immunofluorescence, DCFDA and TMRE staining, flow cytometry, methylation-specific PCR, and gene transfection techniques were performed to elucidate vitexin's potential targets and underlying mechanisms.

Results

Vitexin treatment significantly reduced lung damage, neutrophil infiltration, and inflammation while improving tight junction integrity. In LPS-treated RAW264.7 macrophages and a septic mouse BALF-induced MLE-12 cell injury model, vitexin demonstrated anti-inflammatory effects, promoted M2 macrophage polarization, and enhanced regenerative markers. It also decreased oxidative stress, mitigated apoptosis and pyroptosis, and improved mitochondrial function. Our research uncovered a novel epigenetic regulatory mechanism involving lncRNA SNHG1, DNMT1, and miR-495.

Conclusion

Vitexin’s ability to reduce inflammation, counteract oxidative stress, and modulate epigenetic processes. These findings underscore the promising role of vitexin as a treatment for ALI generated by sepsis. The SNHG1/miR-495 axis, which has been identified, represents a new target for future therapies in acute lung injury.

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Titel: Vitexin mitigates oxidative stress, mitochondrial damage, pyroptosis and regulates small nucleolar RNA host gene 1/DNA methyltransferase 1/microRNA-495 axis in sepsis-associated acute lung injury
verfasst von: Almaz Zaki
Mohd Mohsin
Salman Khan
Aman Khan
Shaniya Ahmad
Amit Verma
Shakir Ali
Tasneem Fatma
Mansoor Ali Syed
Publikationsdatum: 06.12.2024
Verlag: Springer International Publishing
Erschienen in: Inflammopharmacology
Print ISSN: 0925-4692
Elektronische ISSN: 1568-5608
DOI: https://doi.org/10.1007/s10787-024-01609-6