Endogenous Bioelectrical Modulation by REAC Metabolic Optimization-IBZ Modulates SIRT1, PPAR-γ, and Metabolic Signaling Pathways in Human Fibroblasts

Highlights: What are the main findings? REAC Metabolic Optimization-IBZ induces a coordinated downregulation of SIRT1 and upregulation of PPAR-γ in human fibroblasts, representing a molecular profile plausibly associated with changes in cellular metabolic regulation, although functional metabolic consequences were not directly evaluated in this study. REAC MO-IBZ is associated with directional increases in key metabolic and energetic pathway proteins in fibroblasts, including mTOR, IGF-1R, and cytochrome c, based on qualitative immunofluorescence evidence, supporting further investigation of REAC-based bioelectrical modulation and its impact on cellular bioenergetic regulation. What are the implications of the main findings? The observed gene and protein expression profile suggests that REAC MO-IBZ may promote a biologically coherent modulation of regulatory pathways, potentially contributing to functional cellular reprogramming through endogenous bioelectrical and epigenetic mechanisms. However, these mechanisms were not directly investigated and should be interpreted as hypothesis-generating. These findings provide preliminary mechanistic indications supporting the use of REAC-based bioelectrical modulation as a non-invasive strategy in regenerative medicine and metabolic dysfunction-related conditions, while recognizing that additional functional and quantitative analyses are required to substantiate direct physiological effects. Fibroblasts play a fundamental role in maintaining tissue architecture, regulating repair processes, and adapting to metabolic and inflammatory stress. Increasing evidence indicates that endogenous bioelectrical states contribute to gene expression regulation and cellular homeostasis. In this study, we investigated the effects of Radio Electric Asymmetric Conveyer (REAC) Metabolic Optimization–Inside Blue Zone (MO-IBZ) treatment on key regulators of stress response and metabolic control in human foreskin fibroblasts (HFF-1). Cells were exposed to nine standardized REAC MO-IBZ sessions, and changes in gene and protein expression were evaluated. Quantitative RT-PCR revealed a significant downregulation of SIRT1 and an upregulation of PPAR-γ expression in treated cells compared with untreated controls. These findings indicate molecular changes involving stress-responsive and metabolic regulatory pathways; however, they should be interpreted primarily as transcriptional signatures, as no direct functional stress-response or metabolic assays were performed. Immunofluorescence analysis showed visually increased expression of mTOR, IGF-1 receptor, and cytochrome c in REAC-treated fibroblasts, supporting a qualitative indication of activation of pathways associated with anabolic signaling, mitochondrial function, and metabolic efficiency. Taken together, these findings indicate that REAC MO-IBZ induces a coordinated molecular profile compatible with changes in cellular metabolic regulatory capacity. Within the framework of current bioelectrical literature, these changes may plausibly reflect broader regulatory adaptations; however, the present work does not provide direct measurements of bioelectrical parameters, functional metabolic activity, or epigenetic regulation, and therefore such interpretations remain speculative. These results provide descriptive mechanistic evidence supporting further investigation of REAC-based bioelectrical modulation as a potential strategy to influence cellular pathways involved in metabolic balance and tissue repair, encouraging future studies incorporating direct bioelectrical, epigenetic, and functional analyses.