Responsive probes for in vivo magnetic resonance imaging of nitric oxide
Source abstract
Abstract
Nitric oxide (NO), a pivotal signalling molecule, plays multifaceted roles in physiological and pathological processes, including cardiovascular and immune functions, neurotransmission and cancer progression. Nevertheless, measuring NO in vivo is challenging due to its transient nature and the complexity of the biological environment. Here we describe NO-responsive magnetic probes made of crosslinked superparamagnetic iron oxide nanoparticles tethered to a NO-sensitive cleavable linker for highly sensitive and selective NO magnetic resonance imaging in vivo. These probes enable the detection of NO at concentrations as low as 0.147 μM, allowing for the imaging and quantification of NO in mouse tumour models, studying its effects on tumour progression and immunity and assessing the response of tumour-associated macrophages to cancer immunotherapeutic agents. Additionally, they facilitate concurrent anatomical and molecular imaging of organs, helping to identify pathological alterations in the liver. Overall, these probes represent promising non-invasive tools for investigating the dose-dependent conflicting role of NO in physiological and pathophysiological processes.
Source: europepmc · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Nitric Oxide and Endothelin Effects · Advanced MRI Techniques and Applications · Atomic and Subatomic Physics Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (46)
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