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Direct Detection of Isolevuglandins in Tissues Using a D11 scFv-Alkaline Phosphatase Fusion Protein and Immunofluorescence
Published on: July 5, 2021
Development of a highly selective fluorescence probe for alkaline phosphatase
Mitsuyasu Kawaguchi1, Kenjiro Hanaoka, Toru Komatsu
1Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
Bioorganic & Medicinal Chemistry Letters
|April 13, 2011
Summary
We created TG-mPhos, a novel fluorescent probe highly selective for alkaline phosphatase (ALP). This advancement allows for precise imaging of ALP activity in biological settings, outperforming previous probes.
Area of Science:
- Biochemistry
- Molecular Biology
- Chemical Biology
Background:
- Alkaline phosphatase (ALP) plays crucial roles in various biological processes.
- Existing fluorescence probes often lack the specificity required for accurate detection of ALP activity.
- Distinguishing ALP from other phosphatases like protein tyrosine phosphatase and protein serine/threonine phosphatase is challenging.
Purpose of the Study:
- To develop a highly selective fluorescence probe for alkaline phosphatase (ALP).
- To overcome the limitations of previous probes in distinguishing ALP from other phosphatases.
- To enable precise fluorescence imaging of ALP activity in biological applications.
Main Methods:
- Development of a novel fluorescence probe, TG-mPhos, featuring an alcoholic phosphate linkage.
- Comparative analysis of TG-mPhos selectivity against other phosphatases.
- Evaluation of TG-mPhos for fluorescence imaging applications.
Main Results:
- TG-mPhos demonstrates high selectivity for alkaline phosphatase (ALP).
- The probe effectively distinguishes ALP activity from protein tyrosine phosphatase and protein serine/threonine phosphatase.
- A previously developed probe, TG-Phos, with a phenolic phosphate linkage, lacked this selectivity.
Conclusions:
- TG-mPhos is the first highly selective fluorescence probe developed for alkaline phosphatase.
- The probe's selectivity is attributed to its alcoholic phosphate linkage.
- TG-mPhos is a promising tool for precise fluorescence imaging of ALP activity in biological research.
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