NAD(H)-loaded nanoparticles for efficient sepsis therapy via modulating immune and vascular homeostasis.

NAD(H)-loaded nanoparticles for efficient sepsis therapy via modulating immune and vascular homeostasis.
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负载 NAD(H) 的纳米粒子通过调节免疫和血管稳态来有效治疗脓毒症。

DOI:
10.1038/s41565-022-01137-w
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发表时间:
2022-08
影响因子:
38.3
通讯作者:
Gong S
Gong S
中科院分区:
材料科学1区
文献类型:
--
作者:
Ye M;Zhao Y;Wang Y;Xie R;Tong Y;Sauer JD;Gong S

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脓毒症是一种危及生命的器官功能障碍,仅在美国每年就造成近27万人死亡。烟酰胺腺嘌呤二核苷酸(NAD+)是一种免疫调节剂,可以潜在地治疗脓毒症;然而,NAD+的临床应用因其不能被细胞直接摄取而受到阻碍。为了应对这一挑战,设计了一系列负载NAD+或还原形式的NAD+(NADH)的纳米颗粒(NP),下文称为负载NAD(H)的NP,以实现NAD(H)的直接细胞转运和补充。负载NAD(H)的NP改善细胞能量供应,抑制炎症并防止炎症诱导的细胞凋亡和细胞凋亡。因此,NPs可以帮助维持免疫稳态和血管功能,这是脓毒症发病机制中的两个关键因素。负载NAD(H)的纳米粒在治疗内毒素血症和多药耐药病原体诱导的菌血症中表现出优异的治疗效果。此外,负载NAD(H)的NP防止盲肠结扎和穿刺诱导的多器官损伤,并改善盲肠结扎和穿刺后继发性铜绿假单胞菌感染的结果,因此可能导致高度创新和转化的方法来有效和安全地治疗脓毒症。
Sepsis is a life-threatening organ dysfunction responsible for nearly 270,000 deaths annually in the United States alone. Nicotinamide adenine dinucleotide (NAD+), an immunomodulator, can potentially treat sepsis; however, clinical application of NAD+ is hindered by its inability to be directly taken up by cells. To address this challenge, a family of nanoparticles (NPs) loaded with either NAD+ or the reduced form of NAD+ (NADH), hereafter NAD(H)-loaded NPs, were engineered to enable direct cellular transport and replenishment of NAD(H). The NAD(H)-loaded NPs improved cellular energy supply, suppressed inflammation and prevented inflammation-induced cell pyroptosis and apoptosis. Therefore, the NPs can help maintain immune homoeostasis and vascular function, two key factors in the pathogenesis of sepsis. The NAD(H)-loaded NPs demonstrated excellent therapeutic efficacies in treating endotoxemia and multidrug-resistant pathogen-induced bacteremia. In addition, the NAD(H)-loaded NPs prevented caecal ligation and puncture-induced multiorgan injury and improved outcomes of secondary Pseudomonas aeruginosa infections following caecal ligation and puncture, thus potentially leading to a highly innovative and translational approach to treat sepsis efficiently and safely.
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