We developed a cost-effective genome-scale PCR-based method for high-definition DNA FISH (HD-FISH). We visualized gene loci with diffraction-limited resolution, chromosomes as spot clusters and single genes together with transcripts by combining HD-FISH with single-molecule RNA FISH. We provide a database of over 4.3 million primer pairs targeting the human and mouse genomes that is readily usable for rapid and flexible generation of probes.
We thank P. Junker and S. Semrau for helpful discussions. We are grateful to R.A. Weinberg (Massachusetts Institute of Technology) for providing hTERT-HME1 cells. This work was supported by the US National Institutes of Health (NIH)/National Cancer Institute Physical Sciences Oncology Center at Massachusetts Institute of Technology (U54CA143874), an NIH Pioneer award (1DP1OD003936) and a Nederlandse Organisatie voor Wetenschappelijk Onderzoek Vici award to A.v.O. M.B. and S.I. are sponsored by the Human Frontiers Science Program.
3D rendering of Chr17 in HME cells, visualized with ten HD-FISH probes evenly spaced every 8 Mb and labeled with two alternating fluorophores (green: AlexaFluor594; magenta: AlexaFluor647).
The nucleus displayed is the same as in the Z-projection shown in Figure 3a (mid panel).