Increased potency of a bi-specific TL1A-ADAM17 (TACE) inhibitor by cell surface targeting

Tomer Weizman, Itay Levin, Marianna Zaretsky, Irit Sagi, Amir Aharoni

Research output: Contribution to journalArticlepeer-review


Inflammatory bowel disease (IBD) is a multifactorial disease characterized by the dysregulated activity of many pro-inflammatory factors. Thus, bi-specific inhibitors for the simultaneous inhibition of two pro-inflammatory factors can exhibit high therapeutic potential. Here, we developed a novel bi-specific inhibitor targeting the TL1A cytokine and ADAM17/TACE metalloprotease. Biochemical analysis of the bi-specific inhibitor revealed high TL1A binding and TACE inhibition that is similar to the two respective mono-specific inhibitors. Interestingly, cell based assays for TL1A inhibition revealed strong synergism between the inhibitory domains showing an up to 80-fold increase in potency of the bi-specific inhibitor. The dramatic increase in potency is associated with binding to cell membranes through the TACE inhibitory domain leading to increased concentration of the inhibitor on the cell surface. Our study highlights the high potential of the simultaneous targeting of cell surface metalloprotease (TACE) and soluble pro-inflammatory cytokine (TL1A) as a potential therapeutic approach in IBD.

Original languageEnglish
Article number61
JournalFrontiers in Molecular Biosciences
Issue numberAUG
StatePublished - 22 Aug 2017


  • ADAM17
  • Bi-specific inhibitors
  • Metalloproteases
  • Pro-inflammatory cytokines
  • Protein engineering
  • TACE
  • TL1A

All Science Journal Classification (ASJC) codes

  • Molecular Biology
  • Biochemistry
  • Biochemistry, Genetics and Molecular Biology (miscellaneous)


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