PMID- 33657402 OWN - NLM STAT- MEDLINE DCOM- 20210414 LR - 20240104 IS - 1097-4164 (Electronic) IS - 1097-2765 (Print) IS - 1097-2765 (Linking) VI - 81 IP - 7 DP - 2021 Apr 1 TI - Genome oligopaint via local denaturation fluorescence in situ hybridization. PG - 1566-1577.e8 LID - S1097-2765(21)00097-6 [pii] LID - 10.1016/j.molcel.2021.02.011 [doi] AB - Cas9 in complex with a programmable guide RNA targets specific double-stranded DNA for cleavage. By harnessing Cas9 as a programmable loader of superhelicase to genomic DNA, we report a physiological-temperature DNA fluorescence in situ hybridization (FISH) method termed genome oligopaint via local denaturation (GOLD) FISH. Instead of global denaturation as in conventional DNA FISH, loading a superhelicase at a Cas9-generated nick allows for local DNA denaturation, reducing nonspecific binding of probes and avoiding harsh treatments such as heat denaturation. GOLD FISH relies on Cas9 cleaving target DNA sequences and avoids the high nuclear background associated with other genome labeling methods that rely on Cas9 binding. The excellent signal brightness and specificity enable us to image nonrepetitive genomic DNA loci and analyze the conformational differences between active and inactive X chromosomes. Finally, GOLD FISH could be used for rapid identification of HER2 gene amplification in patient tissue. CI - Copyright (c) 2021 Elsevier Inc. All rights reserved. FAU - Wang, Yanbo AU - Wang Y AD - Department of Biophysics and Biophysical Chemistry, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA. FAU - Cottle, Wayne Taylor AU - Cottle WT AD - Department of Biophysics and Biophysical Chemistry, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA. FAU - Wang, Haobo AU - Wang H AD - Bloomberg School of Public Health, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA. FAU - Feng, Xinyu Ashlee AU - Feng XA AD - Department of Biology, Johns Hopkins University, Baltimore, MD 21218, USA. FAU - Mallon, John AU - Mallon J AD - Bloomberg School of Public Health, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA. FAU - Gavrilov, Momcilo AU - Gavrilov M AD - Department of Biophysics and Biophysical Chemistry, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA. FAU - Bailey, Scott AU - Bailey S AD - Department of Biophysics and Biophysical Chemistry, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Bloomberg School of Public Health, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA. FAU - Ha, Taekjip AU - Ha T AD - Department of Biophysics and Biophysical Chemistry, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Biophysics, Johns Hopkins University, Baltimore, MD 21218, USA; Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD 21205, USA; Howard Hughes Medical Institute, Baltimore, MD 21205, USA. Electronic address: tjha@jhu.edu. LA - eng GR - T32 GM080189/GM/NIGMS NIH HHS/United States GR - HHMI/Howard Hughes Medical Institute/United States GR - R01 GM097330/GM/NIGMS NIH HHS/United States GR - U01 DK127432/DK/NIDDK NIH HHS/United States GR - T32 GM007445/GM/NIGMS NIH HHS/United States GR - R35 GM122569/GM/NIGMS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PT - Research Support, U.S. Gov't, Non-P.H.S. DEP - 20210302 PL - United States TA - Mol Cell JT - Molecular cell JID - 9802571 RN - 0 (RNA, Guide, CRISPR-Cas Systems) RN - EC 3.1.- (CRISPR-Associated Protein 9) SB - IM MH - CRISPR-Associated Protein 9/*chemistry MH - *CRISPR-Cas Systems MH - Cell Line MH - Female MH - Fibroblasts/chemistry/metabolism MH - *Hot Temperature MH - Humans MH - *In Situ Hybridization, Fluorescence MH - *Nucleic Acid Denaturation MH - RNA, Guide, CRISPR-Cas Systems/*chemistry PMC - PMC8026568 MID - NIHMS1674313 OTO - NOTNLM OT - CRISPR-Cas9 OT - DNA FISH OT - superhelicase COIS- Declaration of interests An immediate family member of T.H. is a member of advisory boards of Molecular Cell. EDAT- 2021/03/04 06:00 MHDA- 2021/04/15 06:00 PMCR- 2022/04/01 CRDT- 2021/03/03 20:05 PHST- 2020/08/25 00:00 [received] PHST- 2020/11/22 00:00 [revised] PHST- 2021/02/04 00:00 [accepted] PHST- 2021/03/04 06:00 [pubmed] PHST- 2021/04/15 06:00 [medline] PHST- 2021/03/03 20:05 [entrez] PHST- 2022/04/01 00:00 [pmc-release] AID - S1097-2765(21)00097-6 [pii] AID - 10.1016/j.molcel.2021.02.011 [doi] PST - ppublish SO - Mol Cell. 2021 Apr 1;81(7):1566-1577.e8. doi: 10.1016/j.molcel.2021.02.011. Epub 2021 Mar 2.