PMID- 30418432 OWN - NLM STAT- Publisher LR - 20240227 IS - 1546-1696 (Electronic) IS - 1087-0156 (Print) IS - 1087-0156 (Linking) DP - 2018 Nov 12 TI - ClampFISH detects individual nucleic acid molecules using click chemistry-based amplification. LID - 10.1038/nbt.4286 [doi] AB - Methods for detecting single nucleic acids in cell and tissues, such as fluorescence in situ hybridization (FISH), are limited by relatively low signal intensity and nonspecific probe binding. Here we present click-amplifying FISH (clampFISH), a method for fluorescence detection of nucleic acids that achieves high specificity and high-gain (>400-fold) signal amplification. ClampFISH probes form a 'C' configuration upon hybridization to the sequence of interest in a double helical manner. The ends of the probes are ligated together using bio-orthogonal click chemistry, effectively locking the probes around the target. Iterative rounds of hybridization and click amplify the fluorescence intensity. We show that clampFISH enables the detection of RNA species with low-magnification microscopy and in RNA-based flow cytometry. Additionally, we show that the modular design of clampFISH probes allows multiplexing of RNA and DNA detection, that the locking mechanism prevents probe detachment in expansion microscopy, and that clampFISH can be applied in tissue samples. FAU - Rouhanifard, Sara H AU - Rouhanifard SH AUID- ORCID: 0000-0002-6991-4877 AD - Department of Bioengineering, University of Pennsylvania, Philadelphia Pennsylvania, USA. FAU - Mellis, Ian A AU - Mellis IA AUID- ORCID: 0000-0002-6239-4821 AD - Department of Bioengineering, University of Pennsylvania, Philadelphia Pennsylvania, USA. AD - Genomics and Computational Biology Group, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA. FAU - Dunagin, Margaret AU - Dunagin M AD - Department of Bioengineering, University of Pennsylvania, Philadelphia Pennsylvania, USA. FAU - Bayatpour, Sareh AU - Bayatpour S AD - Department of Bioengineering, University of Pennsylvania, Philadelphia Pennsylvania, USA. FAU - Jiang, Connie L AU - Jiang CL AD - Department of Bioengineering, University of Pennsylvania, Philadelphia Pennsylvania, USA. AD - Cell and Molecular Biology Group, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA. FAU - Dardani, Ian AU - Dardani I AD - Department of Bioengineering, University of Pennsylvania, Philadelphia Pennsylvania, USA. FAU - Symmons, Orsolya AU - Symmons O AD - Department of Bioengineering, University of Pennsylvania, Philadelphia Pennsylvania, USA. FAU - Emert, Benjamin AU - Emert B AD - Department of Bioengineering, University of Pennsylvania, Philadelphia Pennsylvania, USA. AD - Genomics and Computational Biology Group, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA. FAU - Torre, Eduardo AU - Torre E AD - Department of Bioengineering, University of Pennsylvania, Philadelphia Pennsylvania, USA. AD - Department of Biochemistry and Biophysics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA. FAU - Cote, Allison AU - Cote A AD - Department of Bioengineering, University of Pennsylvania, Philadelphia Pennsylvania, USA. FAU - Sullivan, Alessandra AU - Sullivan A AD - Altius Institute for Biomedical Sciences, Seattle, Washington, USA. FAU - Stamatoyannopoulos, John A AU - Stamatoyannopoulos JA AD - Altius Institute for Biomedical Sciences, Seattle, Washington, USA. FAU - Raj, Arjun AU - Raj A AUID- ORCID: 0000-0002-2915-6960 AD - Department of Bioengineering, University of Pennsylvania, Philadelphia Pennsylvania, USA. AD - Genomics and Computational Biology Group, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA. AD - Department of Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA. LA - eng GR - T32 DK007780/DK/NIDDK NIH HHS/United States GR - R01 HG009283/HG/NHGRI NIH HHS/United States GR - F32 GM120929/GM/NIGMS NIH HHS/United States GR - RM1 HG007743/HG/NHGRI NIH HHS/United States GR - F30 NS100595/NS/NINDS NIH HHS/United States GR - U01 HL129998/HL/NHLBI NIH HHS/United States GR - T32 HG000046/HG/NHGRI NIH HHS/United States GR - R33 EB019767/EB/NIBIB NIH HHS/United States PT - Journal Article DEP - 20181112 PL - United States TA - Nat Biotechnol JT - Nature biotechnology JID - 9604648 PMC - PMC6511493 MID - NIHMS1507951 COIS- Competing interests: A.R. receives royalties related to Stellaris RNA FISH probes. EDAT- 2018/11/13 06:00 MHDA- 2018/11/13 06:00 PMCR- 2019/05/13 CRDT- 2018/11/13 06:00 PHST- 2018/05/07 00:00 [received] PHST- 2018/09/24 00:00 [accepted] PHST- 2018/11/13 06:00 [entrez] PHST- 2018/11/13 06:00 [pubmed] PHST- 2018/11/13 06:00 [medline] PHST- 2019/05/13 00:00 [pmc-release] AID - nbt.4286 [pii] AID - 10.1038/nbt.4286 [doi] PST - aheadofprint SO - Nat Biotechnol. 2018 Nov 12:10.1038/nbt.4286. doi: 10.1038/nbt.4286.