Leveraging Chlorination-Based Mechanism for Resolving Subcellular Hypochlorous Acid.

Autor:	Tang FK; Department of Chemistry & Biochemistry, Clarkson University, NY, 13676, United States., Tucker L; Department of Chemistry & Biochemistry, Clarkson University, NY, 13676, United States., Nadiveedhi MR; Department of Chemistry & Biochemistry, Clarkson University, NY, 13676, United States., Hladun C; Department of Chemistry & Biochemistry, Clarkson University, NY, 13676, United States., Morse J; Department of Chemistry & Biochemistry, Clarkson University, NY, 13676, United States., Ali M; Department of Chemistry & Biochemistry, Clarkson University, NY, 13676, United States., Payne N; Department of Chemistry & Biochemistry, Clarkson University, NY, 13676, United States., Schmidt M; Department of Chemistry & Biochemistry, Clarkson University, NY, 13676, United States., Leung K; Department of Chemistry & Biochemistry, Clarkson University, NY, 13676, United States.
Jazyk:	angličtina
Zdroj:	BioRxiv : the preprint server for biology [bioRxiv] 2024 Aug 23. Date of Electronic Publication: 2024 Aug 23.
DOI:	10.1101/2024.08.22.609247
Abstrakt:	Hypochlorous acid (HOCl) is crucial for pathogen defense, but an imbalance in HOCl levels can lead to tissue damage and inflammation. Existing HOCl indicators employ an oxidation approach, which may not truly reveal the chlorinative stress environment. We designed a suite of indicators with a new chlorination-based mechanism, termed HOClSense dyes, to resolve HOCl in sub-cellular compartments. HOClSense dyes allow the visualization of HOCl with both switch-on and switch-off detection modes with diverse emission colors, as well as a unique redshift in emission. HOClSense features a minimalistic design with impressive sensing performance in terms of HOCl selectivity, and our design also facilitates functionalization through click chemistry for resolving subcellular HOCl. As a proof of concept, we targeted plasma membrane and lysosomes with HOClSense for subcellular HOCl mapping. With utilizing HOClSense, we discovered the STING pathway-induced HOCl production and the abnormal HOCl production in Niemann-Pick diseases. To the best of our knowledge, this is the first chlorination-based HOCl indicator series for resolving subcellular HOCl. Competing Interests: Declaration of interests The authors declare no competing financial interests.
Databáze:	MEDLINE
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