Andrey Mikheikin, Anita Olsen, Kevin Leslie, Freddie Russell-Pavier, Andrew Yacoot, Loren Picco, Oliver Payton, Amir Toor, Alden Chesney, James K Gimzewski, Bud Mishra, Jason Reed
Progress in whole-genome sequencing using short-read (e.g., <150 bp), next-generation sequencing technologies has reinvigorated interest in high-resolution physical mapping to fill technical gaps that are not well addressed by sequencing. Here, we report two technical advances in DNA nanotechnology and single-molecule genomics: (1) we describe a labeling technique (CRISPR-Cas9 nanoparticles) for high-speed AFM-based physical mapping of DNA and (2) the first successful demonstration of using DVD optics to image DNA molecules with high-speed AFM. As a proof of principle, we used this new "nanomapping" method to detect and map precisely BCL2-IGH translocations present in lymph node biopsies of follicular lymphoma patents. This HS-AFM "nanomapping" technique can be complementary to both sequencing and other physical mapping approaches.
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CRISPR-Cas Systems
Chromosome Mapping
DNA
Genomics
High-Throughput Nucleotide Sequencing
Humans
Image Processing, Computer-Assisted
Immunoglobulin Heavy Chains
Lymphoma, Follicular
Microscopy, Atomic Force
Nanoparticles
Nanotechnology
Proto-Oncogene Proteins c-bcl-2
Translocation, Genetic