Abstract
Reversible and non-invasive photoswitching of the immunosuppressive effect of a drug would be a very valuable tool for precisely regulating the immune system. Using a combination of protein borrowing and two-photon photoisomerization, we designed and synthesized derivatives of cyclosporin A. Here we demonstrate photoswitching of the local conformation within small molecules, which we used to modulate inhibitory potencies for cyclophilin, influence ternary and quaternary complex formations and regulate T-cell transcriptional activation in situ.
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Acknowledgements
We thank the SFB610 of the Deutsche Forschungsgemeinschaft for supporting the work and M. Heidler and I. Kunze for their excellent technical assistance.
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Y.Z. and F.E. performed and analyzed experiments. Y.Z. synthesized all CsA derivatives and measured the enzymatic activities together with F.E. F.E. designed and performed all bioassays. G.F. prepared the manuscript and planned all experiments together with Y.Z. and F.E.
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Zhang, Y., Erdmann, F. & Fischer, G. Augmented photoswitching modulates immune signaling. Nat Chem Biol 5, 724–726 (2009). https://doi.org/10.1038/nchembio.214
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DOI: https://doi.org/10.1038/nchembio.214