ires-c-11

IRES-C11 is a specific inhibitor of translation that targets the internal ribosome entry site (IRES) of the c-MYC gene. It functions by blocking the interaction between heterogeneous nuclear ribonucleoprotein A1, a trans-acting factor required for c-MYC IRES activity, and its corresponding IRES. Notably, IRES-C11 does not inhibit the IRES activity of BAG-1, XIAP, and p53.

Lupus autoantigen peptide (LAP), a derivative of the autoantigen La found in systemic lupus erythematosus (SLE) patients, spans amino acids 11-28 of La and functions as an antiviral peptide. It primarily blocks the hepatitis C virus (HCV) from interacting with internal ribosome entry site (IRES) trans-acting factors (ITAFs), notably the polypyrimidine tract-binding protein (PTB) and poly(rC)-binding protein 2 (PCBP2). In a Huh7 cell-based reporter assay, LAP at a concentration of 60 µM effectively hampers HCV IRES-mediated translation, a process reversible by adding recombinant forms of PTB and PCBP2.