Send to

Choose Destination
Semin Hematol. 2012 Jul;49(3):223-7. doi: 10.1053/j.seminhematol.2012.04.006.

Biologic impact of proteasome inhibition in multiple myeloma cells--from the aspects of preclinical studies.

Author information

Jerome Lipper Multiple Myeloma Center, Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Boston, MA 02215, USA.


The ubiquitin-proteasome pathway (UPP) is a major protein degradation system that maintains homeostasis of intracellular proteins, involved in DNA repair, cell cycle regulation, cell proliferation, and drug resistance. Since numerous proteins are processed by proteasomes, their inhibition triggers dramatic disruption of protein homeostasis. Consequently, accumulation of polyubiquitinated proteins triggers different types of cellular stress responses, followed by growth arrest and cytotoxicity. Importantly, multiple myeloma (MM) cells are considered to have lower threshold against these stresses than other cell types, which makes these cells sensitive to proteasome inhibitors.

[Indexed for MEDLINE]
Free PMC Article

Supplemental Content

Full text links

Icon for Elsevier Science Icon for PubMed Central
Loading ...
Support Center