Enhanced antilymphoma efficacy of CD19-redirected influenza MP1-specific CTLs by cotransfer of T cells modified to present influenza MP1

Laurence J.N. Cooper, Zaid Al-Kadhimi, Lisa Marie Serrano, Timothy Pfeiffer, Simon Olivares, Adrian Castro, Wen Chung Chang, Sergio Gonzalez, David Smith, Stephen J. Forman, Michael C. Jensen

Research output: Contribution to journalArticle

88 Scopus citations

Abstract

To enhance the in vivo antitumor activity of adoptively transferred, CD19-specific chimeric antigen receptor (CAR)-redirected cytototic T lymphocytes (CTLs), we studied the effect of restimulating CAR+ CTLs through their endogenous virus-specific T-cell antigen receptor (TcR) by the cotransfer of angineered T-cell antigen-presenting cells (T-APCs). Using influenza A matrix protein 1 (MP1) as a model antigen, we show that ex vivo-expanded CD4 + and CD8+ T-APCs expressing a hygromycin phosphotransferase-MP1 fusion protein (HyMP1) process and present MP1 to autologous human leukocyte antigen (HLA)-restricted, MP1-specific CD4 + and CD8+ CTL precursors. The MP1-specific CTLs are amenable to subsequent genetic modification to express a CD19-specific CAR, designated CD19R, and acquire HLA-unresfricted reactivity toward CD19 + leukemia and lymphoma tumor targets while maintaining HLA-restricted MP1 specificity. The restimulation of MP1 × CD19 dual-specific CTLs in vivo by the adoptive transfer of irradiated HyMP1 + T-APCs resulted in the enhanced antilymphoma potency of bispecific effector cells, as measured by elimination of the biophotonic signal of established firefly luciferase-expressing Burkitt tymphoma xenografts in nonobese diabetic/severe combined immunodeficiency (KOD/scid) animals compared with control groups restimulated by Hy+MP1neg T-APCs. Engineered T-APCs are a novel and versatile antigen-delivery system for generating antigen-specific T cells in vitro and enhancing the in vivo effector functioning of CAR-redirected antitumor effector cells.

Original languageEnglish (US)
Pages (from-to)1622-1631
Number of pages10
JournalBlood
Volume105
Issue number4
DOIs
StatePublished - Feb 15 2005

ASJC Scopus subject areas

  • Biochemistry
  • Immunology
  • Hematology
  • Cell Biology

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    Cooper, L. J. N., Al-Kadhimi, Z., Serrano, L. M., Pfeiffer, T., Olivares, S., Castro, A., Chang, W. C., Gonzalez, S., Smith, D., Forman, S. J., & Jensen, M. C. (2005). Enhanced antilymphoma efficacy of CD19-redirected influenza MP1-specific CTLs by cotransfer of T cells modified to present influenza MP1. Blood, 105(4), 1622-1631. https://doi.org/10.1182/blood-2004-03-1208