PMID- 32162675 OWN - NLM STAT- MEDLINE DCOM- 20210827 LR - 20210827 IS - 1097-0290 (Electronic) IS - 0006-3592 (Linking) VI - 117 IP - 6 DP - 2020 Jun TI - High-throughput single-molecule imaging system using nanofabricated trenches and fluorescent DNA-binding proteins. PG - 1640-1648 LID - 10.1002/bit.27331 [doi] AB - DNA curtain is a high-throughput system, integrating a lipid bilayer, fluorescence imaging, and microfluidics to probe protein-DNA interactions in real-time and has provided in-depth understanding of DNA metabolism. Especially, the microfluidic platform of a DNA curtain is highly suitable for a biochip. In the DNA curtain, DNA molecules are aligned along chromium nanobarriers, which are fabricated on a slide surface, and visualized using an intercalating dye, YOYO-1. Although the chromium barriers confer precise geometric alignment of DNA, reuse of the slides is limited by wear of the barriers during cleaning. YOYO-1 is rapidly photobleached and causes photocleavage of DNA under continuous laser illumination, restricting DNA observation to a brief time window. To address these challenges, we developed a new nanopatterned slide, upon which carved nanotrenches serve as diffusion barriers. The nanotrenches were robust under harsh cleaning conditions, facilitating the maintenance of surface cleanliness that is essential to slide reuse. We also stained DNA with a fluorescent protein with a DNA-binding motif, fluorescent protein-DNA binding peptide (FP-DBP). FP-DBP was slowly photobleached and did not cause DNA photocleavage. This new DNA curtain system enables a more stable and repeatable investigation of real-time protein-DNA interactions and will serve as a good platform for lab-on-a-chip. CI - (c) 2020 Wiley Periodicals, Inc. FAU - Kang, Yujin AU - Kang Y AD - School of Life Sciences, Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea. FAU - Cheon, Na Young AU - Cheon NY AD - School of Life Sciences, Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea. FAU - Cha, Jongjin AU - Cha J AD - Department of Physics and Astronomy, Seoul National University, Seoul, Republic of Korea. FAU - Kim, Ayoung AU - Kim A AD - School of Life Sciences, Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea. FAU - Kim, Hyung-Il AU - Kim HI AD - UNIST Central Research Facilities (UCRF), Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea. FAU - Lee, Luda AU - Lee L AD - UNIST Central Research Facilities (UCRF), Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea. FAU - Kim, Kang O AU - Kim KO AD - UNIST Central Research Facilities (UCRF), Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea. FAU - Jo, Kyubong AU - Jo K AD - Department of Chemistry and Integrated Biotechnology, Sogang University, Seoul, Republic of Korea. FAU - Lee, Ja Yil AU - Lee JY AUID- ORCID: 0000-0002-5726-9022 AD - School of Life Sciences, Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea. AD - Center for Genomic Integrity, Institute for Basic Science, Ulsan, Republic of Korea. LA - eng GR - IBS-R022-D1/Institute for Basic Science/International GR - 1.160106.01/Ulsan National Institute of Science and Technology/International GR - POSCO Science Fellowship of POSCO TJ Park Foundation/International GR - NRF-2016R1A6A1A03012845/National Research Foundation of Korea/International GR - NRF-2017R1A2B4002213/National Research Foundation of Korea/International PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20200406 PL - United States TA - Biotechnol Bioeng JT - Biotechnology and bioengineering JID - 7502021 RN - 0 (Benzoxazoles) RN - 0 (DNA-Binding Proteins) RN - 0 (Fluorescent Dyes) RN - 0 (Lipid Bilayers) RN - 0 (Quinolinium Compounds) RN - 143413-85-8 (1,1'-((4,4,7,7-tetramethyl)-4,7-diazaundecamethylene)bis-4-(3-methyl-2,3-dihydro(benzo-1,3-oxazole)-2-methylidene)quinolinium) RN - 9007-49-2 (DNA) SB - IM MH - Benzoxazoles/*analysis MH - DNA/*analysis MH - DNA-Binding Proteins/*analysis MH - Fluorescent Dyes/*analysis MH - Lipid Bilayers/chemistry MH - Nanostructures/*chemistry MH - Optical Imaging/methods MH - Quinolinium Compounds/*analysis MH - Single Molecule Imaging/*methods OTO - NOTNLM OT - DNA curtain OT - FP-DBP OT - high-throughput single-molecule imaging OT - nanotrench EDAT- 2020/03/13 06:00 MHDA- 2021/08/28 06:00 CRDT- 2020/03/13 06:00 PHST- 2020/01/16 00:00 [received] PHST- 2020/03/02 00:00 [revised] PHST- 2020/03/11 00:00 [accepted] PHST- 2020/03/13 06:00 [pubmed] PHST- 2021/08/28 06:00 [medline] PHST- 2020/03/13 06:00 [entrez] AID - 10.1002/bit.27331 [doi] PST - ppublish SO - Biotechnol Bioeng. 2020 Jun;117(6):1640-1648. doi: 10.1002/bit.27331. Epub 2020 Apr 6.