Nature Communications (Apr 2020)

Proteasome inhibitor-induced modulation reveals the spliceosome as a specific therapeutic vulnerability in multiple myeloma

  • Hector H. Huang,
  • Ian D. Ferguson,
  • Alexis M. Thornton,
  • Prabhakar Bastola,
  • Christine Lam,
  • Yu-Hsiu T. Lin,
  • Priya Choudhry,
  • Margarette C. Mariano,
  • Makeba D. Marcoulis,
  • Chin Fen Teo,
  • Julia Malato,
  • Paul J. Phojanakong,
  • Thomas G. Martin,
  • Jeffrey L. Wolf,
  • Sandy W. Wong,
  • Nina Shah,
  • Byron Hann,
  • Angela N. Brooks,
  • Arun P. Wiita

DOI
https://doi.org/10.1038/s41467-020-15521-4
Journal volume & issue
Vol. 11, no. 1
pp. 1 – 14

Abstract

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The mechanisms of action of proteasome inhibitors (PI) in multiple myeloma (MM) treatment are not fully elucidated. Here, the authors use unbiased phosphoproteomics in PI-treated MM and show increased phosphorylation of splicing-associated proteins, ultimately revealing splicing interference as a mode of PI action as well as demonstrating the spliceosome as a specific therapeutic vulnerability in this disease.