A two-pronged nanomedicine counteracts obesity by remodeling adipose niche

Obesity is fueled by a self-reinforcing cycle of impaired thermogenesis and chronic inflammation. Herein, we elucidate a pathogenic feedback loop wherein pro-inflammatory macrophages suppress adipocyte thermogenesis, while dysfunctional adipocytes exacerbate inflammatory signaling. To disrupt this vicious cycle, we proposed a two-pronged nanoplatform that simultaneously targets both arms of this pathology: (1) thermogenic revival through spatially controlled hyperthermia, converting metabolically inert white adipose tissue into energy-burning beige fat while mitigating adipocyte hypertrophy-driven inflammation; and (2) inflammation suppression via targeted Sting pathway blockade, creating an immunotolerant microenvironment to sustain thermogenic activation. When applied to high-fat-induced obesity mice, this dual-action nanomedicine exhibits preferential adipose tissue accumulation, robustly enhancing systemic energy expenditure and remodeling adipose inflammatory milieu. Consequently, the combined nanoplatform not only halted obesity progression but also improved insulin sensitivity and mitigated metabolic comorbidities. By concurrently reigniting thermogenic capacity and dismantling inflammatory barriers, our strategy breaks the pathological loop of obesity, offering a promising therapeutic avenue for metabolic syndrome.