Circularly polarised luminescence laser scanning confocal microscopy to study live cell chiral molecular interactions

Patrycja Stachelek, Lewis MacKenzie, David Parker, Robert Pal*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

89 Citations (Scopus)

Abstract

The molecular machinery of life is founded on chiral building blocks, but no experimental technique is currently available to distinguish or monitor chiral systems in live cell bio-imaging studies. Luminescent chiral molecules encode a unique optical fingerprint within emitted circularly polarized light (CPL) carrying information about the molecular environment, conformation, and binding state. Here, we present a CPL Laser Scanning Confocal Microscope (CPL-LSCM) capable of simultaneous chiroptical contrast based live-cell imaging of endogenous and engineered CPL-active cellular probes. Further, we demonstrate that CPL-active probes can be activated using two-photon excitation, with complete CPL spectrum recovery. The combination of these two milestone results empowers the multidisciplinary imaging community, allowing the study of chiral interactions on a sub-cellular level in a new (chiral) light.
Original languageEnglish
Article number553
Number of pages8
JournalNature Communications
Volume13
DOIs
Publication statusPublished - 27 Jan 2022

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