SERPINE1, DKK1, Meox2, SIRT7

The provided input 'SERPINE1, DKK1, Meox2, SIRT7' does not represent a single therapeutic target, protein complex, or established multi-protein receptor system. Instead, it is a list of four distinct proteins with diverse biological roles. SERPINE1 (Plasminogen Activator Inhibitor-1) is a key regulator of fibrinolysis and a marker of cellular senescence. DKK1 (Dickkopf-related protein 1) is a secreted inhibitor of the Wnt signaling pathway involved in bone formation and cancer. Meox2 (Mesenchyme Homeobox 2) is a transcription factor essential for muscle development and vascular regulation. SIRT7 (Sirtuin 7) is an NAD+-dependent deacetylase involved in ribosome biogenesis and DNA repair. While some of these proteins are individually explored as therapeutic targets or biomarkers in aging and oncology, they do not form a unified pharmacological target.

Not applicable as this is a list of multiple distinct proteins.