The long-term goal of Project 1 (C. Rooney and L. Wang) is to improve the expansion and persistence of adoptively transferred tumor-specific T cells using two novel approaches. (1) Incorporation of a third- generation chimeric antigen receptor (CAR) for GD2 containing intracellular signaling domains for CD28 and OX40 is hypothesized to enhance and sustain T- cell responses intratumorally, while providing resistance to inhibitory ligands elaborated within the tumor microenvironment. (ii) An extratumoral proliferative boost should be attained by engrafting the GD2.CAR onto T cells specific for the varicella-zoster virus (VZV), for which there exists a potent live-attenuated booster vaccine that increases the in vivo proliferation of VZV-specific T cells via their TCRs. These broad concepts will be explored in a clinical trial of GD2.CAR-engrafted VZV-specific T cells for the treatment of patients with advanced GD2-positive sarcomas ( A i m s 1 and 2). Because this will be a """"""""first-in-man"""""""" study, the transduced T cells will also incorporate an inducible safety switch based on dimerization of the caspase-9 molecule, which was validated in a recent clinical trial against graft-vs.-host disease. Unfortunately, the youngest pediatric sarcoma patients will be VZV-negative, making it difficult to generate VZV-specific autologous T cells and to justify vaccination of these seronegative patients with a live-attenuated virus. Hence, Aim 3 will evaluate in a preclinical model a cellular vaccine against GD2 that should provide extratumoral stimulation via the CAR. This effort will rely on the JF neuroblastoma (NB) cell line, which has been extensively tested as a cellular vaccine for NB. GD2 is strongly expressed by JF cells and can be presented to GD2,CAR-positive T cells both directly by the JFNB cells and indirectly by local antigen- presenting cells. Genetic modification of JFNB cells to express cytokines, such as ILI 5 and GM-CSF, that enhance T-cell proliferation and recruit and activate dendritic cells should promote extratumoral proliferation of the CAR-positive T cells in ananalogous way to stimulation of the native T cell receptor by VZV. In part therefore our project uses concepts developed in Project 3 and provides potential ways of increasing the safety and efficacy of projects 2 and 3 (the iC9 safety gene) and Project 4 (the DNR for TGFbeta).
Progress in the development of T-cell therapy for advanced sarcomas and other high-risk solid tumors has been slowed by the weak expression or absence of targetable tumor antigens and poor performance of infused T cells . Project 1 seeks to address this problem by combining improved antigen receptor capabilities with a novel vaccination strategy to ensure adequate T-cell stimulation, both within and outside the tumor site.
|Rouce, Rayne H; Heslop, Helen E (2016) Forecasting Cytokine Storms with New Predictive Biomarkers. Cancer Discov 6:579-80|
|Yagyu, Shigeki; Hoyos, Valentina; Del Bufalo, Francesca et al. (2016) Multiple mechanisms determine the sensitivity of human-induced pluripotent stem cells to the inducible caspase-9 safety switch. Mol Ther Methods Clin Dev 3:16003|
|Bollard, Catherine M; Heslop, Helen E (2016) T cells for viral infections after allogeneic hematopoietic stem cell transplant. Blood 127:3331-40|
|Rouce, Rayne H; Sharma, Sandhya; Huynh, Mai et al. (2016) Recent advances in T-cell immunotherapy for haematological malignancies. Br J Haematol :|
|Ramos, Carlos A; Heslop, Helen E; Brenner, Malcolm K (2016) CAR-T Cell Therapy for Lymphoma. Annu Rev Med 67:165-83|
|Hegde, Meenakshi; Mukherjee, Malini; Grada, Zakaria et al. (2016) Tandem CAR T cells targeting HER2 and IL13RÎ±2 mitigate tumor antigen escape. J Clin Invest 126:3036-52|
|DeRenzo, Christopher; Gottschalk, Stephen (2016) Genetically Modified T-cell Therapy for the Treatment of Osteosarcoma: An Update. J Clin Cell Immunol 7:|
|Zhou, Xiaoou; Naik, Swati; Dakhova, Olga et al. (2016) Serial Activation of the Inducible Caspase 9 Safety Switch After Human Stem Cell Transplantation. Mol Ther 24:823-31|
|Naik, Swati; Nicholas, Sarah K; Martinez, Caridad A et al. (2016) Adoptive immunotherapy for primary immunodeficiency disorders with virus-specific T lymphocytes. J Allergy Clin Immunol 137:1498-1505.e1|
|Chang, Edmund C; Liu, Hao; West, John A et al. (2016) Clonal Dynamics In Vivo of Virus Integration Sites of T Cells Expressing a Safety Switch. Mol Ther 24:736-45|
Showing the most recent 10 out of 189 publications