NCIt definition : An active metabolite of MLN9708, a second generation, boron containing peptide proteasome
inhibitor (PI) with potential antineoplastic activity. Ixazomib binds to and inhibits
the 20S catalytic core of the proteasome, thereby blocking the targeted proteolysis
normally performed by the proteasome, which results in an accumulation of unwanted
or misfolded proteins; disruption of various cell signaling pathways may follow, resulting
in the induction of apoptosis. Compared to first generation PIs, second generation
PIs may have an improved pharmacokinetic profile with increased potency and less toxicity.
Proteasomes are large protease complexes that degrade unneeded or damaged proteins
that have been ubiquinated.;