Fibulin-7 Inhibitors

Chemical inhibitors of Fibulin-7 function by targeting the protein's interactions in the extracellular matrix (ECM), particularly its role in ECM remodeling facilitated by matrix metalloproteinases (MMPs). Marimastat, Batimastat, Ilomastat, Phenanthroline, Prinomastat, PD166793, Ro 32-3555, and AG3340 (Prinomastat) are all inhibitors of MMPs, a group of enzymes that Fibulin-7 is known to interact with. By inhibiting these MMPs, these chemicals prevent the normal functioning of Fibulin-7 within the ECM. For example, Marimastat is a broad-spectrum MMP inhibitor that can bind to the catalytic domain of MMPs, which would otherwise interact with Fibulin-7, thereby impairing the protein's ability to contribute to the ECM remodeling process. Similarly, Batimastat and Ilomastat (GM6001) can block the activity of MMPs, thus disrupting the potential for Fibulin-7 to perform its normal functions in the ECM.

Phenanthroline operates through a different mechanism, it chelates zinc ions which are crucial for the catalytic activity of MMPs, thereby inhibiting the MMPs' interaction with Fibulin-7. This inhibition of MMPs translates into a functional inhibition of Fibulin-7's role in ECM organization. Furthermore, TAPI-0 targets ADAM17, which is involved in the proteolytic release of cell surface proteins, and its inhibition can alter Fibulin-7's interaction with the ECM. NSC 405020 is a selective inhibitor of MMP-14, which is one of the MMPs that can associate with Fibulin-7, and by inhibiting MMP-14, NSC 405020 indirectly inhibits the function of Fibulin-7 in the ECM. ARP 100 specifically inhibits MMP-2 and, by doing so, affects the Fibulin-7 related processes within the ECM.