RE: Abzena12 Apr 2025 16:48
The link between Avacta and Abenza is Laura Weatherburn, who contributed to the AffDC poster presented at EORTC-NCI-AACR in Barcelona in October 2024: https://abzena.com/resource/affimer-drug-conjugates-affdc-targeting-fibroblast-activation-protein/
From her LinkedIn profile, she has been working as Scientist II (promoted to Senior Scientist last week), Bioconjugation at Abenza in Cambridge, UK since April 2022: https://www.linkedin.com/in/laura-weatherburn-85662a130/
She described her work (as it was up until last week, at lreast) as primarily "producing bioconjugates for client projects, covering a wide scope of linker technologies and protein formats" and posted about the AffDC collaboration four months ago: https://www.linkedin.com/feed/update/urn:li:activity:7262717183401553920/
She also describes her experience as:
- Bioconjugation to antibodies, bispecific antibodies, antibody fragments and recombinant proteins.
- Experience covering classical bioconjugation chemistry (e.g maleimide, NHS-ester, DBCO), enzymatic reactions (BTGase), and disulfide rebridging reagents (ThioBridge®)
- Conjugation of a wide range of cytotoxic reagents (e.g MMAE, Dxd), oligonucleotides and fluorescent dyes.
- Functionalisation and purification of oligonucleotides for conjugation
- Experience in working with small scale production of ADC's (1 mg) to multigram (5 g) amounts
- Purification of conjugates produced (SEC, HIC, IEX, Affinity, TFF)
- Analysis of ADC's and linker-payloads (Analytical-HIC, SEC, LC-MS, IEX, UV-Vis, SDS-PAGE and RP-HPLC)
The Abenza site is very close to the old Avacta site outside Cambridge so I would hazard a guess that Abenza's activities and possibly Laura Weatherburn herself were known to Avacta and so were an obvious contractor if the necessary bioconjugation skills and experience didn't reside inhouse.