Viruses can be targeted for entry and replication in cancer cells and armed to amplify the effects of conventional chemo- or radiation therapy. In particular, since lymphoma remissions were documented after acute measles, reprogrammed measles viruses (MV) appear ideal to treat lymphoma patients failing to respond to conventional therapies. We have already proven the oncolytic efficacy of vaccine-lineage MV in lymphoma xenograft models, and have shown that receptor-targeting and prodrug convertase-arming enhances specificity and efficacy of virotherapy. Tumor regressions, however, were temporary. We now plan to assess the efficacy of alternative modalities of targeting and arming. As to cell-entry targeting, we will compare the infection efficacy of MV with different receptor specificity in clinical materials from lymphoma patients including tumor tissue and circulating cells. As to post-entry targeting, we will generate MV with the potential of preferential replication through specific defects in their innate immunity control proteins. We will arm MV by expression of the natrium-iodine symporter (NIS) protein, allowing concentration of 131I. The efficacy of these viruses will be compared with that of viruses expressing the prodrug convertase purine nucleotide phosphorylase (PNP), activating the lymphoma chemotherapeutic fludarabine phosphate (F-araAMP). To shield vectors from MV-neutralizing antibodies, we will cover the MV ribonucleocapsid with the structurally related but non-cross-reactive envelopes of other paramyxoviruses. We will test the efficacy of reprogrammed viruses in infecting cells of lymphoma patients, and in reducing xenografts of different lymphoma types, including mantle cell lymphoma. We will test the oncolytic efficacy of sequential application of viruses with alternative envelopes in immunocompetent mice with implanted congenic tumor allografts.

Public Health Relevance

This grant application foresees to reprogram a human virus that is naturally lymphotropic into a lymphoma therapeutic. We will develop complementary avenues of experimentation to reprogram measles virus: adding different layers of cancer cell specificity (targeting), enhancing potency (arming), and shielding the virus turned into a therapeutic vector from the host immune system.

National Institute of Health (NIH)
National Cancer Institute (NCI)
Research Project (R01)
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Gene and Drug Delivery Systems Study Section (GDD)
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Muszynski, Karen
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Mayo Clinic, Rochester
United States
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Mateo, Mathieu; Navaratnarajah, Chanakha K; Cattaneo, Roberto (2014) Structural basis of efficient contagion: measles variations on a theme by parainfluenza viruses. Curr Opin Virol 5:16-23
Miest, Tanner S; Cattaneo, Roberto (2014) New viruses for cancer therapy: meeting clinical needs. Nat Rev Microbiol 12:23-34
Miest, Tanner S; Frenzke, Marie; Cattaneo, Roberto (2013) Measles virus entry through the signaling lymphocyte activation molecule governs efficacy of mantle cell lymphoma radiovirotherapy. Mol Ther 21:2019-31
Hudacek, A W; Navaratnarajah, C K; Cattaneo, R (2013) Development of measles virus-based shielded oncolytic vectors: suitability of other paramyxovirus glycoproteins. Cancer Gene Ther 20:109-16
Navaratnarajah, Chanakha K; Miest, Tanner S; Carfi, Andrea et al. (2012) Targeted entry of enveloped viruses: measles and herpes simplex virus I. Curr Opin Virol 2:43-9
Miest, Tanner S; Yaiw, Koon-Chu; Frenzke, Marie et al. (2011) Envelope-chimeric entry-targeted measles virus escapes neutralization and achieves oncolysis. Mol Ther 19:1813-20
Leber, Mathias F; Bossow, Sascha; Leonard, Vincent H J et al. (2011) MicroRNA-sensitive oncolytic measles viruses for cancer-specific vector tropism. Mol Ther 19:1097-106
Yaiw, K-C; Miest, T S; Frenzke, M et al. (2011) CD20-targeted measles virus shows high oncolytic specificity in clinical samples from lymphoma patients independent of prior rituximab therapy. Gene Ther 18:313-7
Bossow, S; Grossardt, C; Temme, A et al. (2011) Armed and targeted measles virus for chemovirotherapy of pancreatic cancer. Cancer Gene Ther 18:598-608
Cattaneo, Roberto (2010) Paramyxovirus entry and targeted vectors for cancer therapy. PLoS Pathog 6:e1000973

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