PMID- 33536463 OWN - NLM STAT- MEDLINE DCOM- 20211115 LR - 20211115 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 11 IP - 1 DP - 2021 Feb 3 TI - An evaluation of multi-excitation-wavelength standing-wave fluorescence microscopy (TartanSW) to improve sampling density in studies of the cell membrane and cytoskeleton. PG - 2903 LID - 10.1038/s41598-020-78282-6 [doi] LID - 2903 AB - Conventional standing-wave (SW) fluorescence microscopy uses a single wavelength to excite fluorescence from the specimen, which is normally placed in contact with a first surface reflector. The resulting excitation SW creates a pattern of illumination with anti-nodal maxima at multiple evenly-spaced planes perpendicular to the optical axis of the microscope. These maxima are approximately 90 nm thick and spaced 180 nm apart. Where the planes intersect fluorescent structures, emission occurs, but between the planes are non-illuminated regions which are not sampled for fluorescence. We evaluate a multi-excitation-wavelength SW fluorescence microscopy (which we call TartanSW) as a method for increasing the density of sampling by using SWs with different axial periodicities, to resolve more of the overall cell structure. The TartanSW method increased the sampling density from 50 to 98% over seven anti-nodal planes, with no notable change in axial or lateral resolution compared to single-excitation-wavelength SW microscopy. We demonstrate the method with images of the membrane and cytoskeleton of living and fixed cells. FAU - Schniete, Jana K AU - Schniete JK AD - Department of Physics, SUPA, University of Strathclyde, 107 Rottenrow East, Glasgow, G4 0NG, UK. jana.schniete@strath.ac.uk. FAU - Tinning, Peter W AU - Tinning PW AD - Department of Physics, SUPA, University of Strathclyde, 107 Rottenrow East, Glasgow, G4 0NG, UK. FAU - Scrimgeour, Ross C AU - Scrimgeour RC AD - Department of Physics, SUPA, University of Strathclyde, 107 Rottenrow East, Glasgow, G4 0NG, UK. FAU - Robb, Gillian AU - Robb G AD - Department of Physics, SUPA, University of Strathclyde, 107 Rottenrow East, Glasgow, G4 0NG, UK. FAU - Kolln, Lisa S AU - Kolln LS AD - Department of Physics, SUPA, University of Strathclyde, 107 Rottenrow East, Glasgow, G4 0NG, UK. FAU - Wesencraft, Katrina AU - Wesencraft K AD - Department of Physics, SUPA, University of Strathclyde, 107 Rottenrow East, Glasgow, G4 0NG, UK. FAU - Paul, Nikki R AU - Paul NR AD - Cancer Research UK Beatson Institute, Garscube Estate, Switchback Road, Bearsden, Glasgow, G61 1BD, UK. FAU - Bushell, Trevor J AU - Bushell TJ AD - Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow, G4 0RE, UK. FAU - McConnell, Gail AU - McConnell G AD - Department of Physics, SUPA, University of Strathclyde, 107 Rottenrow East, Glasgow, G4 0NG, UK. LA - eng GR - BB/P02565X/1/BB_/Biotechnology and Biological Sciences Research Council/United Kingdom GR - MR/K015583/1/MRC_/Medical Research Council/United Kingdom GR - MR/R017247/1/MRC_/Medical Research Council/United Kingdom GR - MR/K015583/1/MRC_/Medical Research Council/United Kingdom GR - EP/L016559/1/EPSRC Centre for Doctoral Training in Medical Imaging/ GR - A17196/CRUK_/Cancer Research UK/United Kingdom PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20210203 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 SB - IM MH - Animals MH - Cell Line, Tumor MH - *Cell Membrane MH - *Cytoskeleton MH - Humans MH - Image Enhancement/instrumentation/*methods MH - Intravital Microscopy/instrumentation/*methods MH - Mice MH - Microscopy, Fluorescence/instrumentation/methods PMC - PMC7858599 COIS- The authors declare no competing interests. EDAT- 2021/02/05 06:00 MHDA- 2021/11/16 06:00 PMCR- 2021/02/03 CRDT- 2021/02/04 05:45 PHST- 2020/05/21 00:00 [received] PHST- 2020/11/23 00:00 [accepted] PHST- 2021/02/04 05:45 [entrez] PHST- 2021/02/05 06:00 [pubmed] PHST- 2021/11/16 06:00 [medline] PHST- 2021/02/03 00:00 [pmc-release] AID - 10.1038/s41598-020-78282-6 [pii] AID - 78282 [pii] AID - 10.1038/s41598-020-78282-6 [doi] PST - epublish SO - Sci Rep. 2021 Feb 3;11(1):2903. doi: 10.1038/s41598-020-78282-6.