Frequent Engagement of the Classical and Alternative NF-κB Pathways by Diverse Genetic Abnormalities in Multiple Myeloma

Christina M. Annunziata, R. Eric Davis, Yulia Demchenko, William Bellamy, Ana Gabrea, Fenghuang Zhan, Georg Lenz, Ichiro Hanamura, George Wright, Wenming Xiao, Sandeep Dave, Elaine M. Hurt, Bruce Tan, Hong Zhao, Owen Stephens, Madhumita Santra, David R. Williams, Lenny Dang, Bart Barlogie, John D. ShaughnessyW. Michael Kuehl, Louis M. Staudt

Research output: Contribution to journalArticlepeer-review

839 Scopus citations

Abstract

Mechanisms of constitutive NF-κB signaling in multiple myeloma are unknown. An inhibitor of IκB kinase β (IKKβ) targeting the classical NF-κB pathway was lethal to many myeloma cell lines. Several cell lines had elevated expression of NIK due to genomic alterations or protein stabilization, while others had inactivating mutations of TRAF3; both kinds of abnormality triggered the classical and alternative NF-κB pathways. A majority of primary myeloma patient samples and cell lines had elevated NF-κB target gene expression, often associated with genetic or epigenetic alteration of NIK, TRAF3, CYLD, BIRC2/BIRC3, CD40, NFKB1, or NFKB2. These data demonstrate that addiction to the NF-κB pathway is frequent in myeloma and suggest that IKKβ inhibitors hold promise for the treatment of this disease.

Original languageEnglish (US)
Pages (from-to)115-130
Number of pages16
JournalCancer cell
Volume12
Issue number2
DOIs
StatePublished - Aug 14 2007
Externally publishedYes

Keywords

  • CELLCYCLE
  • SIGNALING

ASJC Scopus subject areas

  • Oncology
  • Cell Biology
  • Cancer Research

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