Nature Communications (Sep 2022)

TP53 mutations and RNA-binding protein MUSASHI-2 drive resistance to PRMT5-targeted therapy in B-cell lymphoma

  • Tatiana Erazo,
  • Chiara M. Evans,
  • Daniel Zakheim,
  • Karen L. Chu,
  • Alice Yunsi Refermat,
  • Zahra Asgari,
  • Xuejing Yang,
  • Mariana Da Silva Ferreira,
  • Sanjoy Mehta,
  • Marco Vincenzo Russo,
  • Andrea Knezevic,
  • Xi-Ping Zhang,
  • Zhengming Chen,
  • Myles Fennell,
  • Ralph Garippa,
  • Venkatraman Seshan,
  • Elisa de Stanchina,
  • Olena Barbash,
  • Connie Lee Batlevi,
  • Christina S. Leslie,
  • Ari M. Melnick,
  • Anas Younes,
  • Michael G. Kharas

DOI
https://doi.org/10.1038/s41467-022-33137-8
Journal volume & issue
Vol. 13, no. 1
pp. 1 – 18

Abstract

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Inhibition of the protein arginine methyltransferase PRMT5 has been suggested as a promising therapy for lymphoma. Here, the authors show that TP53 loss of function and MUSASHI-2 (MSI2) expression are biomarkers of resistance to PRMT5-targeted therapy in B-cell lymphoma. Moreover, combining PRMT5 inhibition with MSI2 or BCL-2 inhibitors blocks the translation of key drivers of lymphoma, c-MYC and BCL-2, inhibiting cell growth.