MRI-responsive nanoprobes for visualizing hydrogen peroxide in diabetic liver injury

IF 12.8 1区 医学 Q1 ENGINEERING, BIOMEDICAL
Xingyue Fan , Yue Sun , Jiaqi Fu , Hui Cao , Shiyi Liao , Cheng Zhang , Shuangyan Huan , Guosheng Song
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Abstract

Diabetic liver injury has emerged as a significant complication associated with diabetes, warranting increased attention. The generation of hydrogen peroxide (H2O2) due to oxidative stress plays a critical role in the onset and progression of this condition. Despite this, there is a scarcity of probes capable of non-invasively, accurately, and reliably visualizing H2O2 levels in deep-seated liver in diabetes-induced liver injury. In this study, we introduce a novel H2O2-responsive magnetic probe (H2O2-RMP), designed for the sensitive imaging of H2O2 in the liver injury caused by diabetes. H2O2-RMP is synthesized through the co-precipitation of a H2O2-responsive amphiphilic polymer, manganese(III) porphyrin (Mn-porphyrin), and iron oxide nanoparticles. When exposed to H2O2, the released iron oxide nanoparticles aggregate, resulting in an increased T2-weighted MR signal intensity. H2O2-RMP not only demonstrates a wide dynamic response range (initial r2 = 9.87 mM-1s-1, Δr2 = 7.69 mM-1s-1), but also exhibits superior selectivity for H2O2 compared to other reactive oxygen species. Importantly, H2O2-RMP exhibits high sensitivity, with a detection limit for hydrogen peroxide as low as 0.56 μM. Moreover, H2O2-RMP has been effectively applied for real-time imaging of H2O2 levels in the livers of diabetic model mice with varying degrees of severity, highlighting its potential for visual diagnosis and monitoring the progression of diabetic liver injury.
磁共振响应纳米探针用于观察糖尿病肝损伤中的过氧化氢
糖尿病性肝损伤已成为糖尿病的重要并发症,值得越来越多的关注。氧化应激产生的过氧化氢(H2O2)在这种情况的发生和发展中起着关键作用。尽管如此,目前仍缺乏能够无创、准确、可靠地观察糖尿病肝损伤中深层肝脏中H2O2水平的探针。在这项研究中,我们介绍了一种新的H2O2响应磁探针(H2O2- rmp),用于糖尿病肝损伤中H2O2的敏感成像。H2O2-RMP是由一种响应h2o2的两亲性聚合物、锰(III)卟啉(mn -卟啉)和氧化铁纳米颗粒共沉淀法合成的。当暴露于H2O2时,释放的氧化铁纳米颗粒聚集,导致t2加权MR信号强度增加。H2O2- rmp不仅具有较宽的动态响应范围(初始r2 = 9.87 mM-1s-1, Δr2 = 7.69 mM-1s-1),而且与其他活性氧相比,对H2O2具有较好的选择性。重要的是,H2O2-RMP具有高灵敏度,对过氧化氢的检测限低至0.56 μM。此外,H2O2- rmp已被有效应用于不同严重程度的糖尿病模型小鼠肝脏中H2O2水平的实时成像,突出了其在视觉诊断和监测糖尿病肝损伤进展方面的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Biomaterials
Biomaterials 工程技术-材料科学:生物材料
CiteScore
26.00
自引率
2.90%
发文量
565
审稿时长
46 days
期刊介绍: Biomaterials is an international journal covering the science and clinical application of biomaterials. A biomaterial is now defined as a substance that has been engineered to take a form which, alone or as part of a complex system, is used to direct, by control of interactions with components of living systems, the course of any therapeutic or diagnostic procedure. It is the aim of the journal to provide a peer-reviewed forum for the publication of original papers and authoritative review and opinion papers dealing with the most important issues facing the use of biomaterials in clinical practice. The scope of the journal covers the wide range of physical, biological and chemical sciences that underpin the design of biomaterials and the clinical disciplines in which they are used. These sciences include polymer synthesis and characterization, drug and gene vector design, the biology of the host response, immunology and toxicology and self assembly at the nanoscale. Clinical applications include the therapies of medical technology and regenerative medicine in all clinical disciplines, and diagnostic systems that reply on innovative contrast and sensing agents. The journal is relevant to areas such as cancer diagnosis and therapy, implantable devices, drug delivery systems, gene vectors, bionanotechnology and tissue engineering.
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