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NADPH-Independent Fluorescent Probe for Live-Cell Imaging of Heme Oxygenase-1

Overview
Journal ACS Sens
Specialty Biotechnology
Date 2025 Jan 2
PMID 39745434
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Abstract

Heme oxygenase-1 (HO-1) catalyzes heme degradation on the consumption of NADPH and molecular oxygen. As an inducible enzyme, HO-1 is highly induced in various disease states, including cancer. Currently, two fluorescent probes for HO-1 have been designed based on the catalytic activity of HO-1, in which the probes serve as a substrate, so NADPH is required to enable the detection. Probes functioning in a NADPH-dependent way may influence other NADPH-consuming pathways, as all these pathways share a common NADPH pool. Here, we report the peptide-based fluorescent probe NBD-P as a simple alternative approach for HO-1 sensing. The designed probe NBD-P functions independently of the catalytic activity of HO-1, therefore enabling fast and sensitive detection of HO-1 with no requirements of other substances, including NADPH and biliverdin reductase. Moreover, it overcomes the need for a large substrate amount and long incubation time during the detection. NBD-P can be quickly taken up by cells, demonstrates an excellent colocalization with the endoplasmic reticulum (where HO-1 is mainly located), and is shown to be reliable in reporting changes in HO-1 levels in live cells. This work provides a simple alternative approach for designing HO-1 fluorescent probes, and we expect it will act as a practical tool for further studying HO-1 biology.

References
1.
Jiang L, Lung H, Huang T, Lan R, Zha S, Chan L . Reactivation of Epstein-Barr virus by a dual-responsive fluorescent EBNA1-targeting agent with Zn-chelating function. Proc Natl Acad Sci U S A. 2019; 116(52):26614-26624. PMC: 6936348. DOI: 10.1073/pnas.1915372116. View

2.
Funes S, Rios M, Fernandez-Fierro A, Covian C, Bueno S, Riedel C . Naturally Derived Heme-Oxygenase 1 Inducers and Their Therapeutic Application to Immune-Mediated Diseases. Front Immunol. 2020; 11:1467. PMC: 7396584. DOI: 10.3389/fimmu.2020.01467. View

3.
Kweon M, Adhami V, Lee J, Mukhtar H . Constitutive overexpression of Nrf2-dependent heme oxygenase-1 in A549 cells contributes to resistance to apoptosis induced by epigallocatechin 3-gallate. J Biol Chem. 2006; 281(44):33761-72. DOI: 10.1074/jbc.M604748200. View

4.
Jung N, Kim H, Kim B, Cha S, Kim G, Ha H . Evidence for heme oxygenase-1 association with caveolin-1 and -2 in mouse mesangial cells. IUBMB Life. 2003; 55(9):525-32. DOI: 10.1080/15216540310001620968. View

5.
Wu J, Li S, Li C, Cui L, Ma J, Hui Y . The non-canonical effects of heme oxygenase-1, a classical fighter against oxidative stress. Redox Biol. 2021; 47:102170. PMC: 8577501. DOI: 10.1016/j.redox.2021.102170. View