ROR1-targeted delivery of OSU-2S, a nonimmunosuppressive FTY720 derivative, exerts potent cytotoxicity in mantle-cell lymphoma in vitro and in vivo

  • Rajeswaran Mani
  • , Chi Ling Chiang
  • , Frank W. Frissora
  • , Ribai Yan
  • , Xiaokui Mo
  • , Sivasubramanian Baskar
  • , Christoph Rader
  • , Rebecca Klisovic
  • , Mitch A. Phelps
  • , Ching Shih Chen
  • , Robert J. Lee
  • , John C. Byrd
  • , Robert Baiocchi
  • , L. James Lee
  • , Natarajan Muthusamy

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

Mantle-cell lymphoma (MCL) remains incurable despite numerous therapeutic advances. OSU-2S, a novel nonimmunosuppressive FTY720 (Fingolimod) derivative, exhibits potent cytotoxicity in MCL cell lines and primary cells. OSU-2S increased the surface expression of CD74, a therapeutic antibody target in MCL cells. OSU-2S, in combination with anti-CD74 antibody milatuzumab, enhanced cytotoxicity in MCL. Moreover, MCL tumor antigen receptor tyrosine kinase-like orphan receptor 1 (ROR1) targeted immunonanoparticle-carrying OSU-2S (2A2-OSU-2S-ILP)-mediated selective cytotoxicity of MCL in vitro, as well as activity in a xenografted mouse model of MCL in vivo. The newly developed OSU-2S delivery using ROR1-directed immunonanoparticles provide selective targeting of OSU-2S to MCL and other ROR1+ malignancies, sparing normal B cells.

Original languageEnglish (US)
Pages (from-to)770-774.e2
JournalExperimental Hematology
Volume43
Issue number9
DOIs
StatePublished - Sep 1 2015

All Science Journal Classification (ASJC) codes

  • Molecular Biology
  • Hematology
  • Genetics
  • Cell Biology
  • Cancer Research

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