Cancers (Aug 2022)

Novel UHRF1-MYC Axis in Acute Lymphoblastic Leukemia

  • Soyoung Park,
  • Ali H. Abdel Sater,
  • Johannes F. Fahrmann,
  • Ehsan Irajizad,
  • Yining Cai,
  • Hiroyuki Katayama,
  • Jody Vykoukal,
  • Makoto Kobayashi,
  • Jennifer B. Dennison,
  • Guillermo Garcia-Manero,
  • Charles G. Mullighan,
  • Zhaohui Gu,
  • Marina Konopleva,
  • Samir Hanash

DOI
https://doi.org/10.3390/cancers14174262
Journal volume & issue
Vol. 14, no. 17
p. 4262

Abstract

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Ubiquitin-like, containing PHD and RING finger domain, (UHRF) family members are overexpressed putative oncogenes in several cancer types. We evaluated the protein abundance of UHRF family members in acute leukemia. A marked overexpression of UHRF1 protein was observed in ALL compared with AML. An analysis of human leukemia transcriptomic datasets revealed concordant overexpression of UHRF1 in B-Cell and T-Cell ALL compared with CLL, AML, and CML. In-vitro studies demonstrated reduced cell viability with siRNA-mediated knockdown of UHRF1 in both B-ALL and T-ALL, associated with reduced c-Myc protein expression. Mechanistic studies indicated that UHRF1 directly interacts with c-Myc, enabling ALL expansion via the CDK4/6-phosphoRb axis. Our findings highlight a previously unknown role of UHRF1 in regulating c-Myc protein expression and implicate UHRF1 as a potential therapeutic target in ALL.

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