ArticleAnalytical chemistry2023
Biocompatible Monophosphonated Trityl Spin Probe, HOPE71, for In Vivo Measurement of pO
Article in Analytical chemistry, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
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Who cites it
6 citing papers in PubMed, 8 citations in OpenAlex.
- Synthesis and Characterization of Pyridine-Containing Tetrathiatriarylmethyl (TAM) Stable Radicals for Biomedical Magnetic Resonance Applications.The Journal of organic chemistry · 2026Article
- Electron paramagnetic resonance (EPR) meets drug delivery and biomaterials: a magnetic love story.Drug delivery and translational research · 2026Review
- Reaction of polarizing agent Ox063 with pyruvic acid under standard sample preparation protocol for dissolution dynamic nuclear polarization.RSC advances · 2025Article
- Line-Shifting Triarylmethyl Radicals for Imaging of Enzyme Activity Using Overhauser-Enhanced Magnetic Resonance Imaging: Application to Alkaline Phosphatase.Chemical & biomedical imaging · 2025Article
- In Vivo Electron Paramagnetic Resonance Molecular Profiling of Tumor Microenvironment upon Tumor Progression to Malignancy in an Animal Model of Breast Cancer.Molecular imaging and biology · 2024Article
- Sensitive simultaneous measurements of oxygenation and extracellular pH by EPR using a stable monophosphonated trityl radical and lithium phthalocyanine.Free radical biology & medicine · 2024Article
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Authors and funding
7 authors at 1 institution in 1 country.
Funding
Abstract
Hypoxia, acidosis, and elevated inorganic phosphate concentration are characteristics of the tumor microenvironment in solid tumors. There are a number of methods for measuring each parameter individually in vivo, but the only method to date for noninvasive measurement of all three variables simultaneously in vivo is electron paramagnetic spectroscopy paired with a monophosphonated trityl radical, pTAM/HOPE. While HOPE has been successfully used for in vivo studies upon intratissue injection, it cannot be delivered intravenously due to systemic toxicity and albumin binding, which causes significant signal loss. Therefore, we present HOPE71, a monophosphonated trityl radical derived from the very biocompatible trityl probe, Ox071. Here, we describe a straightforward synthesis of HOPE71 starting with Ox071 and report its EPR sensitivities to pO
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