Method for producing antibody fragments
US7196187B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 16, 2002 |
| Grant date | Mar 27, 2007 |
| Priority date | — |
| Expiry date | May 2, 2023 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12N15/1037
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
An expression library comprising a repertoire of nucleic acid sequences cloned from a non-immunised source, each nucleic acid sequence encoding at least part of a variable domain of a heavy chain derived from an immunoglobulin naturally devoid of light chains (VHH) wherein the extent of sequence variability in the library is enhanced compared to the corresponding naïve expression library by introducing mutations in one or more of the complementarity determining regions (CDRs) of the nucleic acid sequences or by generating alternative combinations of CDR and framework sequences not naturally present in the naïve library repertoire. Also disclosed is the use of such a library in preparing antibodies, more particularly antibody fragments.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.