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

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…

• RS
  Royal Society

  Award: BB/S017615/1
• H2
  Horizon 2020 Framework Programme

  Awards: H2020-MSCA, 859752, H2020-MSCA-ITN
• EA
  Engineering and Physical Sciences Research Council

  Awards: EP/I010319/1, EP/P025013/1
• BA
  Biotechnology and Biological Sciences Research Council

  Awards: BB/S017615/1, BB/T009268/1, S017615/1, BB/T009268/1, BB/S017615/1, BB/T009268/2