Hypoxia-Activated Prodrug Derivatives of Carbonic Anhydrase Inhibitors in Benzenesulfonamide Series: Synthesis and Biological Evaluation

Emilie Anduran, Ashok Aspatwar, Nanda-Kumar Parvathaneni, Dennis Suylen, Silvia Bua, Alessio Nocentini, Seppo Parkkila, Claudiu T. Supuran, Ludwig Dubois, Philippe Lambin*, Jean-Yves Winum*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review


Hypoxia, a common feature of solid tumours' microenvironment, is associated with an aggressive phenotype and is known to cause resistance to anticancer chemo- and radiotherapies. Tumour-associated carbonic anhydrases isoform IX (hCA IX), which is upregulated under hypoxia in many malignancies participating to the microenvironment acidosis, represents a valuable target for drug strategy against advanced solid tumours. To overcome cancer cell resistance and improve the efficacy of therapeutics, the use of bio-reducible prodrugs also known as Hypoxia-activated prodrugs (HAPs), represents an interesting strategy to be applied to target hCA IX isozyme through the design of selective carbonic anhydrase IX inhibitors (CAIs). Here, we report the design, synthesis and biological evaluations including CA inhibition assays, toxicity assays on zebrafish and viability assays on human cell lines (HT29 and HCT116) of new HAP-CAIs, harboring different bio-reducible moieties in nitroaromatic series and a benzenesulfonamide warhead to target hCA IX. The CA inhibition assays of this compound series showed a slight selectivity against hCA IX versus the cytosolic off-target hCA II and hCA I isozymes. Toxicity and viability assays have highlighted that the compound bearing the 2-nitroimidazole moiety possesses the lowest toxicity (LC50 of 1400 mu M) and shows interesting results on viability assays.

Original languageEnglish
Article number2347
Pages (from-to)1-14
Number of pages14
Issue number10
Publication statusPublished - May 2020


  • hypoxia-activated prodrug
  • carbonic anhydrase
  • inhibitors
  • sulfonamides
  • hypoxic tumour
  • IX


Dive into the research topics of 'Hypoxia-Activated Prodrug Derivatives of Carbonic Anhydrase Inhibitors in Benzenesulfonamide Series: Synthesis and Biological Evaluation'. Together they form a unique fingerprint.

Cite this