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Testa, C.* ; Papini, A.M.* ; Zeidler, R. ; Vullo, D.* ; Carta, F.* ; Supuran, C.T.* ; Rovero, P.*

First studies on tumor associated carbonic anhydrases IX and XII monoclonal antibodies conjugated to small molecule inhibitors.

J. Enzyme Inhib. Med. Chem. 37, 592-596 (2022)
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We report for the first time Antibody-Drug-Conjugates (ADCs) containing human (h) Carbonic Anhydrase (CA; EC 4.2.1.1) directed Monoclonal Antibodies (MAbs) linked to low molecular weight inhibitors of the same enzymes by means of hydrophilic peptide spacers. In agreement with the incorporated CA directed MAb fragments, in vitro inhibition data of the obtained ADCs showed sub-nanomolar K-I values for the tumour associated CAs IX and XII which were up to 10-fold more potent when compared to the corresponding unconjugated MAbs. In addition, the introduction of the CA inhibitor (CAI) benzenesulfonamide allowed the ADCs to potently inhibit the housekeeping tumoral off-target human CA II isoform. Such results are supporting the definition of an unprecedented reported class of ADCs able to hit simultaneously multiple hCAs physiologically cooperative in maintaining altered cellular metabolic pathways, and therefore ideal for the treatment of chronic diseases such as cancers and inflammation diseases.
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Publication type Article: Journal article
Document type Scientific Article
Corresponding Author
Keywords Carbonic Anhydrase ; Monoclonal Antibodies ; Antibody-drug Conjugates; Ligand
ISSN (print) / ISBN 1475-6366
e-ISSN 1475-6374
Quellenangaben Volume: 37, Issue: 1, Pages: 592-596 Article Number: , Supplement: ,
Publisher Informa Healthcare
Publishing Place London
Non-patent literature Publications
Reviewing status Peer reviewed
Grants Deutsche Forschungsgemeinschaft