International Journal of Molecular Medical Science, 2025, Vol.15, No.5, 244-252 http://medscipublisher.com/index.php/ijccr 250 6.3 Uncertainty of interaction with other channels The SIRT3-FOXO3a-SOD2 axis does not exist in isolation. We now know that it is associated with other inflammatory pathways, such as the activation of NF-κB and NLRP3 inflammasomes, but the specific details of these connections remain unclear. For instance, in sepsis-related lung injury, lower SIRT3 levels are closely associated with more active NLRP3 and cell death (pyroptosis), and increasing SIRT3 levels can prevent these conditions through FOXO3a deacetylation (Wu et al., 2023). This indicates that there is a connection between SIRT3 and inflammasome signaling, but the specific details downstream have not been fully understood yet. Similarly, the SIRT1/FOXO3a pathway, together with NF-κB, regulates inflammation and cell death. In brain complications (encephalopathy) and other systemic problems caused by sepsis, FOXO transcription factors are believed to control pro-inflammatory and anti-inflammatory signals through this interaction (Shehata et al., 2023). More research is needed to clarify these complex networks and figure out whether adjusting one pathway will have a chain reaction on others. 7 The Future Development Direction and Prospects of Clinical Translation 7.1 Integrate multi-omics methods to discover new mechanisms and targets Multi-omics approaches, such as proteomics and metabolomics, are increasingly helpful in understanding the complex ways in which the SIRT3-FOXO3a-SOD2 network controls sepsis. For instance, quantitative acetyl proteomics and cardiometabolic studies have shown that insufficient SIRT3 can lead to excessive acetylation of key metabolic enzymes, thereby causing metabolic problems. This helps us understand how SIRT3 controls organ function when sepsis occurs (Zhou, 2024). The application of integrated multi-omics in different organizations and time points can help identify new regulatory nodes, post-translational modifications and possible therapeutic targets in this network, laying the foundation for more precise treatment of sepsis (Xu et al., 2020; Wang et al., 2023). 7.2 Development of biomarkers for personalized treatment Finding reliable biomarkers that can reflect the activity of the SIRT3-FOXO3a-SOD2 network is of great significance for patient stratification and monitoring of treatment response. Proteomic analysis emphasizes that SIRT3 is a highly varying protein in organ damage caused by sepsis, suggesting that it may become a biomarker for judging the severity of the disease and the therapeutic effect (Wang et al., 2023). If methods that can sensitively detect the expression or activity of SIRT3, FOXO3a and SOD2 in blood or tissue samples can be developed, personalized treatment can be achieved, allowing doctors to formulate intervention methods based on the individual molecular conditions of patients, thereby achieving better treatment effects (Wu et al., 2023; Wang et al., 2023). 7.3 Promote clinical research and trial design for this signal axis Although there is sufficient preclinical evidence, the clinical translation has been limited due to the lack of human trials specifically targeting the SIRT3-FOXO3a-SOD2 axis in sepsis. Future clinical research should be based on the favorable results of animal models to design trials to evaluate the safety, efficacy and optimal dose of SIRT3 activators or related intervention measures in patients with sepsis (Xu et al., 2016; Xu et al., 2020). Combining biomarker-guided patient selection, multi-target approaches, and new trial designs that reflect mitochondrial and oxidative stress conditions is important for narrowing the gap between the laboratory and clinical Settings, which can ultimately enhance the role of this signaling network in the treatment of sepsis (Xu et al., 2016; Yu et al., 2022). 8 Concluding Remarks The SIRT3-FOXO3a-SOD2 network is the core for regulating mitochondrial function, oxidative stress and cell survival during sepsis. In models of acute kidney injury, myocardial dysfunction and acute lung injury, the decline in SIRT3 activity leads to excessive acetylation of FOXO3a and SOD2, which weakens the antioxidant defense capacity in sepsis, increases oxidative damage and aggravates organ dysfunction.
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