UK alliance on ninja antibodies
London companies PolyThericsand Spirogen collaborate for betterantibody-drug-conjugates (ADCs) in theight against cancer.
The buzz around antibody-drug-conjugates (ADCs), the weapons of choice in the fight against cancer, just became more blatant. After last week’s news that a novel ADC company had been founded in Switzerland. PolyTherics Limited from London (UK) announced on 2 April that it would join in the treasure hunt for promising ADC candidates. Just like the Swiss ADC Therapeutics Sarl, London-seated PolyTherics relies on the cytotoxic agents provided by Spirogen Limited. The two companies want to combine PolyTherics’ linker technology „TheraPEGTM“ with Spirogen’s potent cytotoxic pyrrolobenzodiazepines („PBDs“). The aim is to connect PBDs via the new linker to antibodys or antibody fragments in a site-specific manner. PolyTherics CEO John Burt is enthusiastic: „This is an exciting opportunity to combine our validated conjugation technology with Spirogen’s potentially best-in-class PBD warheads.“ Also Spirogen CEO Chris Martin is convinced the collaboration will bear fruit: „ADCs will represent a significant medical breakthrough in cancer therapy. PolyTherics’ TheraPEGTM conjugation technology will broaden the applications where our PBD warheads and linkers can create highly potent potentially market-leading ADC candidates.“ Spirogen’s PBDs are DNA minor groove binding agents, which bind and cross-link specific DNA-sites. They block cell division in the targeted (cancer) cells without distorting their DNA helix, thus avoiding the common phenomenon of emergent drug resistance.