Polyamine Metabolic Pathway

The polyamine metabolic pathway encompasses the biosynthesis, catabolism, and transport of polyamines—small aliphatic polycations such as putrescine, spermidine, and spermine. These molecules are ubiquitous in living organisms and play essential roles in cellular functions including nucleic acid synthesis, protein synthesis, cell growth, and proliferation. The pathway is tightly regulated to maintain intracellular homeostasis through coordinated control of enzyme activity and transport systems. Dysregulation of the polyamine metabolic pathway has been implicated in cancer development/progression, immune response modulation, and other diseases. Because rapidly proliferating cells require increased levels of polyamines, the pathway represents a rational target for therapeutic intervention—especially in oncology where inhibitors targeting key enzymes have been developed or proposed.

Other names

Polyamine pathwayPutrescine, Spermidine, Spermine MetabolismGO:0006595 polyamine metabolic process

Targeted inhibition of key enzymes in the polyamine biosynthesis pathway.