Neutral rhenium(<scp>i</scp>) tricarbonyl complexes with sulfur-donor ligands: anti-proliferative activity and cellular localization

Levina, Aviva; Wardhani, Kartika; Stephens, Liam J.; Werrett, Melissa V.; Caporale, Chiara; Dallerba, Elena; Blair, Victoria L.; Massi, Massimiliano; Lay, Peter A.; Andrews, Philip C.

doi:10.1039/d4dt00149d

Cited by 1 publication

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References 81 publications

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“…These novel phosphorescent stains offer a simple, quick, reproducible, and precise flow-cytometry-based method of direct staining of intact EVs, which has outstanding potential for studies of the interactions and communication between EVs and target cells to be reported elsewhere. This concept opens up unprecedented opportunities to conduct experiments that explore various metal complexes [ 53 ] as selective stains of intact EVs from numerous cell types.…”

Section: Conclusion and Future Perspectivesmentioning

confidence: 99%

Tetranuclear Polypyridylruthenium(II) Complexes as Selective Nucleic Acid Stains for Flow Cytometric Analysis of Monocytic and Epithelial Lung Carcinoma Large Extracellular Vesicles

Wardhani,

Levina,

Sun

et al. 2024

Biomolecules

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Selective staining of extracellular vesicles (EVs) is a major challenge for diagnostic and therapeutic applications. Herein, the EV labeling properties of a new class of tetranuclear polypyridylruthenium(II) complexes, Rubb7-TNL and Rubb7-TL, as phosphorescent stains are described. These new stains have many advantages over standard stains to detect and characterize EVs, including: high specificity for EV staining versus cell staining; high phosphorescence yields; photostability; and a lack of leaching from EVs until incorporation with target cells. As an example of their utility, large EVs released from control (basal) or lipopolysaccharide (LPS)-stimulated THP-1 monocytic leukemia cells were studied as a model of immune system EVs released during bacterial infection. Key findings from EV staining combined with flow cytometry were as follows: (i) LPS-stimulated THP-1 cells generated significantly larger and more numerous large EVs, as compared with those from unstimulated cells; (ii) EVs retained native EV physical properties after staining; and (iii) the new stains selectively differentiated intact large EVs from artificial liposomes, which are models of cell membrane fragments or other lipid-containing debris, as well as distinguished two distinct subpopulations of monocytic EVs within the same experiment, as a result of biochemical differences between unstimulated and LPS-stimulated monocytes. Comparatively, the staining patterns of A549 epithelial lung carcinoma-derived EVs closely resembled those of THP-1 cell line-derived EVs, which highlighted similarities in their selective staining despite their distinct cellular origins. This is consistent with the hypothesis that these new phosphorescent stains target RNA within the EVs.

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Section: Conclusion and Future Perspectivesmentioning

confidence: 99%

Tetranuclear Polypyridylruthenium(II) Complexes as Selective Nucleic Acid Stains for Flow Cytometric Analysis of Monocytic and Epithelial Lung Carcinoma Large Extracellular Vesicles

Wardhani,

Levina,

Sun

et al. 2024

Biomolecules

Self Cite

View full text Add to dashboard Cite

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Neutral rhenium(i) tricarbonyl complexes with sulfur-donor ligands: anti-proliferative activity and cellular localization

Abstract: Rhenium(I) tricarbonyl complexes are widely studied for their cell imaging properties and anti-cancer and anti-microbial activities, but the complexes with S-donor ligands remain relatively unexplored. A series of six fac-[Re(CO)3(NN)(SR)]...

Cited by 1 publication

References 81 publications

Tetranuclear Polypyridylruthenium(II) Complexes as Selective Nucleic Acid Stains for Flow Cytometric Analysis of Monocytic and Epithelial Lung Carcinoma Large Extracellular Vesicles

Tetranuclear Polypyridylruthenium(II) Complexes as Selective Nucleic Acid Stains for Flow Cytometric Analysis of Monocytic and Epithelial Lung Carcinoma Large Extracellular Vesicles

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