Drug-free macromolecular therapeutics induce apoptosis in cells isolated from patients with B cell malignancies with enhanced apoptosis induction by pretreatment with gemcitabine

Jiawei Wang, Lian Li, Jiyuan Yang, Phillip M. Clair, Martha J. Glenn, Deborah M. Stephens, D. Christopher Radford, Ken M. Kosak, Michael W. Deininger, Paul J. Shami, Jindřich Kopeček

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

Drug-free macromolecular therapeutics (DFMT) is a new paradigm for the treatment of B cell malignancies. Apoptosis is initiated by the biorecognition of complementary oligonucleotide motifs at the cell surface resulting in crosslinking of CD20 receptors. DMFT is composed from two nanoconjugates: 1) bispecific engager, Fab’-MORF1 (anti-CD20 Fab’ fragment conjugated with morpholino oligonucleotide), and 2) a crosslinking (effector) component P-(MORF2) X (N-(2-hydroxypropyl)methacrylamide (HPMA) copolymer grafted with multiple copies of complementary morpholino oligonucleotide). We evaluated this concept in 44 samples isolated from patients diagnosed with various subtypes of B cell malignancies. Apoptosis was observed in 65.9% of the samples tested. Pretreatment of cells with gemcitabine (GEM) or polymer-gemcitabine conjugate (2P-GEM) enhanced CD20 expression levels thus increasing apoptosis induced by DFMT. These positive results demonstrated that DFMT has remarkable therapeutic potential in various subtypes of B cell malignancies.

Original languageEnglish
Pages (from-to)217-225
Number of pages9
JournalNanomedicine: Nanotechnology, Biology, and Medicine
Volume16
DOIs
StatePublished - Feb 2019
Externally publishedYes

Funding

Acknowledgments: The work was supported in part by NIH grant RO1 GM95606 (to JK) from the National Institute of General Medical Sciences , Huntsman Cancer Institute (award No. 180303 ), and the University of Utah Research Foundation . We acknowledge support of funds from grant P30 CS042014 awarded to Huntsman Cancer Institute and to the ET Program at Huntsman Cancer Institute.

FundersFunder number
University of Utah Research FoundationP30 CS042014
National Institutes of Health
National Institute of General Medical SciencesR01GM095606
Huntsman Cancer Institute180303

    Keywords

    • Apoptosis
    • B cell lymphoma
    • CD20
    • Drug-free macromolecular therapeutics
    • Nanomedicine

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