Methods, cells and organisms
US11920128B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2019 |
| Grant date | Mar 5, 2024 |
| Priority date | — |
| Expiry date | Jul 28, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12N2800/80
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
The invention relates to an approach for introducing one or more desired insertions and/or deletions of known sizes into one or more predefined locations in a nucleic acid (eg, in a cell or organism genome). They developed techniques to do this either in a sequential fashion or by inserting a discrete DNA fragment of defined size into the genome precisely in a predefined location or carrying out a discrete deletion of a defined size at a precise location. The technique is based on the observation that DNA single-stranded breaks are preferentially repaired through the HDR pathway, and this reduces the chances of indels (eg, produced by NHEJ) in the present invention and thus is more efficient than prior art techniques. The invention also provides sequential insertion and/or deletions using single- or double-stranded DNA cutting.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.