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Oncolytic immunotherapy

Erika Vacchelli, Norma Bloy, Fernando Aranda, Aitziber Buqué, Isabelle Cremer, Sandra Demaria, Alexander Eggermont, Silvia Chiara Formenti, Wolf Hervé Fridman, Jitka Fucikova, Jérôme Galon, Radek Spisek, Eric Tartour, Laurence Zitvogel, Guido Kroemer, Lorenzo Galluzzi
Malignant cells succumbing to some forms of radiation therapy are particularly immunogenic and hence can initiate a therapeutically relevant adaptive immune response. This reflects the intrinsic antigenicity of malignant cells (which often synthesize a high number of potentially reactive neo-antigens) coupled with the ability of radiation therapy to boost the adjuvanticity of cell death as it stimulates the release of endogenous adjuvants from dying cells. Thus, radiation therapy has been intensively investigated for its capacity to improve the therapeutic profile of several anticancer immunotherapies, including (but not limited to) checkpoint blockers, anticancer vaccines, oncolytic viruses, Toll-like receptor (TLR) agonists, cytokines, and several small molecules with immunostimulatory effects...
2016: Oncoimmunology
Hasan Rehman, Ann W Silk, Michael P Kane, Howard L Kaufman
With the recent regulatory approval of Talimogene laherparepvec (T-VEC) for the treatment of advanced of melanoma in the United States, Europe and Australia, oncolytic virus immunotherapy has earned its place in the clinic. However, the adoption of T-VEC by the U.S. oncology community has been slow, and so far has been largely limited to specialized cancer centers. Limiting factors include the intratumoral route of administration, which is unfamiliar to medical oncologists, biosafety concerns related to the use of a live virus in the clinic, and the explosion of other therapeutic strategies now available for the treatment of advanced melanoma...
2016: Journal for Immunotherapy of Cancer
Mohanraj Ramachandran, Di Yu, Matheus Dyczynski, Sathishkumar Baskaran, Lei Zhang, Sirle Saul, Aleksei Lulla, Valeria Lulla, Sven Nelander, Anna Dimberg, Andres Merits, Justyna Leja-Jarblad, Magnus Essand
PURPOSE: Glioblastoma multiforme (GBM) and high-risk neuroblastoma are cancers with poor outcome. Immunotherapy in the form of neurotropic oncolytic viruses is a promising therapeutic strategy for these malignancies. Here we evaluate the oncolytic potential of the neurovirulent and partly interferon (IFN)-β-resistant Semliki Forest virus (SFV)-4 in GBMs and neuroblastomas. To reduce neurovirulence we constructed SFV4miRT, which is attenuated in normal CNS cells through insertion of microRNA target sequences for miR124, miR125, miR134 Experimental Design:Oncolytic activity of SFV4miRT was examined in mouse neuroblastoma and GBM cell lines and in patient-derived human glioblastoma cell cultures (HGCC)...
September 16, 2016: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
Marcos Vasquez, Jessica Fioravanti, Fernando Aranda, Vladimir Paredes, Celia Gomar, Nuria Ardaiz, Veronica Fernandez-Ruiz, Miriam Méndez, Estanislao Nistal-Villan, Esther Larrea, Qinshan Gao, Gloria Gonzalez-Aseguinolaza, Jesus Prieto, Pedro Berraondo
Scavenger receptor class B type I (SR-B1) binds pathogen-associated molecular patterns participating in the regulation of the inflammatory reaction but there is no information regarding potential interactions between SR-B1 and the interferon system. Herein, we report that SR-B1 ligands strongly regulate the transcriptional response to interferon α (IFNα) and enhance its antiviral and antitumor activity. This effect was mediated by the activation of TLR2 and TLR4 as it was annulled by the addition of anti-TLR2 or anti-TLR4 blocking antibodies...
August 2016: Oncoimmunology
K J Allan, David F Stojdl, S L Swift
High-throughput screens can rapidly scan and capture large amounts of information across multiple biological parameters. Although many screens have been designed to uncover potential new therapeutic targets capable of crippling viruses that cause disease, there have been relatively few directed at improving the efficacy of viruses that are used to treat disease. Oncolytic viruses (OVs) are biotherapeutic agents with an inherent specificity for treating malignant disease. Certain OV platforms - including those based on herpes simplex virus, reovirus, and vaccinia virus - have shown success against solid tumors in advanced clinical trials...
2016: Oncolytic Virotherapy
Guy R Simpson, Kate Relph, Kevin Harrington, Alan Melcher, Hardev Pandha
Oncolytic viruses are multifunctional anticancer agents with huge clinical potential, and have recently passed the randomized Phase III clinical trial hurdle. Both wild-type and engineered viruses have been selected for targeting of specific cancers, to elicit cytotoxicity, and also to generate antitumor immunity. Single-agent oncolytic virotherapy treatments have resulted in modest effects in the clinic. There is increasing interest in their combination with cytotoxic agents, radiotherapy and immune-checkpoint inhibitors...
2016: Oncolytic Virotherapy
Marinos Tsiatas, Giannis Mountzios, Giuseppe Curigliano
The advent of immunotherapy has transformed the treatment paradigm of several solid tumors and is expected to influence the therapeutic algorithm even more in the future following the results of numerous ongoing clinical trials in a wide range of malignancies. Exploiting the anti-cancer effect of the immune system with the use of vaccines, viral vectors, and more lately with immune check-point inhibitors and chimeric antigen receptor modification, has been proven a successful therapeutic strategy in a broad spectrum of tumors...
July 2016: Annals of Translational Medicine
Nikos E Papaioannou, Ourania V Beniata, Panagiotis Vitsos, Ourania Tsitsilonis, Pinelopi Samara
Cancer immunotherapy uses the immune system and its components to mount an anti-tumor response. During the last decade, it has evolved from a promising therapy option to a robust clinical reality. Many immunotherapeutic modalities are already approved by the Food and Drug Administration (FDA) for treating cancer patients and many others are in the pipeline for approval as standalone or combinatorial therapeutic interventions, several also combined with standard treatments in clinical studies. The two main axes of cancer immunotherapeutics refer to passive and active treatments...
July 2016: Annals of Translational Medicine
Carter M Suryadevara, Katherine A Riccione, John H Sampson
Oncolytic viruses (OV), proteasome inhibitors, and NK cell immunotherapy have all been studied extensively as monotherapies but have never been evaluated in combination. Synergetic treatment of OV-infected glioblastomas (GBM) with a proteasome inhibitor induces necroptotic cell death to enhance NK cell immunotherapy, prolonging survival against human GBM.
August 12, 2016: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
Karly P Garnock-Jones
Talimogene laherparepvec (Imlygic™) is a first-in-class oncolytic viral immunotherapy derived from herpes simplex virus type 1, which has been genetically modified to increase tumour selectivity and stimulate antitumour immune response. This article reviews the pharmacological properties of intralesional talimogene laherparepvec and its clinical efficacy and tolerability in patients with unresectable metastatic melanoma. In the phase III OPTiM trial, talimogene laherparepvec was more effective than subcutaneous human granulocyte-macrophage colony-stimulating factor (GM-CSF), both in patients with stage IIIB-IV melanoma [intention-to-treat (ITT) population] and in those with stage IIIB-IVM1a disease (in an exploratory subgroup analysis)...
October 2016: BioDrugs: Clinical Immunotherapeutics, Biopharmaceuticals and Gene Therapy
D Kee, G McArthur
Immunotherapy for advanced melanoma has progressed dramatically in the last five years with the approval of immune checkpoint inhibitors targeting cytotoxic T lymphocyte-associated protein 4 (CTLA-4) and programmed cell death protein 1 (PD-1). Inhibition of these targets can break cancer-immune tolerance and result in durable objective responses with significantly improved tolerability over cytokine-based immunotherapy. Ipilimumab is an inhibitor of CTLA-4 and the first-in-class immune checkpoint inhibitor to demonstrate an improvement in overall survival in melanoma...
August 2, 2016: European Journal of Surgical Oncology
Brian A Keller, John C Bell
The oncolytic virus (OV) field has entered an exciting period in its evolution in which our basic understanding of viral biology and anti-cancer potential are being actively translated into viable therapeutic options for aggressive malignancies. OVs are naturally occurring or engineered viruses that are able to exploit cancer-specific changes in cellular signaling to specifically target cancers and their microenvironment. The direct cytolytic effect of OVs on cancer cells is known to release antigens, which can begin a cascade of events that results in the induction of anti-cancer adaptive immunity...
September 2016: Journal of Molecular Medicine: Official Organ of the "Gesellschaft Deutscher Naturforscher und Ärzte"
Hiroshi Fukuhara, Yasushi Ino, Tomoki Todo
Oncolytic virus therapy is perhaps the next major breakthrough in cancer treatment following the success in immunotherapy using immune checkpoint inhibitors. Oncolytic viruses are defined as genetically engineered or naturally occurring viruses that selectively replicate in and kill cancer cells without harming the normal tissues. T-Vec (talimogene laherparepvec), a second-generation oncolytic herpes simplex virus type 1 (HSV-1) armed with GM-CSF, was recently approved as the first oncolytic virus drug in the USA and Europe...
August 3, 2016: Cancer Science
Nicholas M Donin, Andrew T Lenis, Stuart Holden, Alexandra Drakaki, Allan Pantuck, Arie Belldegrun, Karim Chamie
PURPOSE: To review the biological mechanisms of action, clinical safety, and efficacy of immunotherapies for urothelial carcinoma (UC). To describe current areas of investigation in immunotherapy, and to highlight ongoing trials and promising investigational agents. MATERIALS AND METHODS: Data was obtained by a search of Pubmed,, and Cochrane databases for English language articles published through February 2016. Applicable abstracts from recent SUO, EAU, AUA, and ASCO meetings were utilized...
July 23, 2016: Journal of Urology
Ilkka Liikanen, Siri Tähtinen, Kilian Guse, Theresia Gutmann, Paula Savola, Minna Oksanen, Anna Kanerva, Akseli Hemminki
Monoclonal anti-HER2 antibody trastuzumab has significantly improved the survival of patients with HER2-overexpressing tumors. Nevertheless, systemic antibody therapy is expensive, limited in efficacy due to physical tumor barriers, and carries the risk of severe side effects such as cardiomyopathy. Oncolytic viruses mediate cancer-selective transgene expression, kill infected cancer cells while mounting antitumor immune responses, and have recently demonstrated promising efficacy in combination treatments...
September 2016: Molecular Cancer Therapeutics
Monika Joshi, Sumanta K Pal, Joseph J Drabick
After decades of disappointments, the use of immunotherapy in cancer has finally come of age and resulted in a real paradigm shift in cancer treatment across many tumor types. With the advent of novel immunotherapies based on increasing understanding of the human immune system, cure has become a real possibility for many patients. The development of cancer vaccines, immune checkpoint inhibitors, chimeric antigen receptor T cell, oncolytic virus based immunotherapy to name a few have given hope to patients. One of the most exciting developments in the era of immunotherapy has been the discovery of checkpoint inhibitors causing blockade of two important immune pathways -- cytotoxic T-lymphocyte-associated protein 4 (CTLA-4) and programmed death receptor-1 (PD-1), resulting in empowerment of anti-tumor immunity...
June 2016: Discovery Medicine
Di Yu, Justyna Leja-Jarblad, Angelica Loskog, Per Hellman, Valeria Giandomenico, Kjell Oberg, Magnus Essand
Cancer immunotherapy is becoming a cornerstone in the clinical care of cancer patients due to the breakthrough trials with immune checkpoint blockade antibodies and chimeric antigen receptor T cells. The next breakthrough in cancer immunotherapy is likely to be oncolytic viruses engineered to selectively kill tumor cells and deceive the immune system to believe that the tumor is a foreign entity that needs to be eradicated. We have developed AdVince, an oncolytic adenovirus for treatment of liver metastases from neuroendocrine tumor (NET)...
July 21, 2016: Neuroendocrinology
Ciorsdan A Campion, Declan Soden, Patrick F Forde
BACKGROUND: The ever increasing knowledge in the areas of cell biology, the immune system and the mechanisms of cancer are allowing a new phase of immunotherapy to develop. The aim of cancer vaccination is to activate the host immune system and some success has been observed particularly in the use of the BCG vaccine for bladder cancer as an immunostimulant. Reovirus, an orphan virus, has proven itself as an oncolytic virus in vitro and in vivo. Over 80 % of tumour cell lines have been found to be susceptible to Reovirus infection and it is currently in phase III clinical trials...
2016: BMC Cancer
Ji Young Yoo, Alena C Jaime-Ramirez, Chelsea Bolyard, Hongsheng Dai, Tejaswini Nallanagulagari, Jeffrey Wojton, Brian Hurwitz, Theresa Relation, Jun-Ge Yu, Tae Jin Lee, Michael T Lotze, Jianying Zhang, Carlo M Croce, Jianhua Yu, Michael A Caligiuri, Matthew Old, Balveen Kaur
BACKGROUND: Both the proteasome inhibitor bortezomib and an oncolytic herpes simplex virus-1 (oHSV) expressing GMCSF are currently FDA-approved. While proteasome blockade can increase oHSV replication, immunological consequences and consequent immunotherapy potential are unknown. In this study, we investigated the impact of bortezomib combined with oHSV on tumor cell death and sensitivity to Natural Killier (NK) cell immunotherapy. EXPERIMENTAL DESIGN: Western blot, flow cytometry, and caspase 3/7 activity assays were used to evaluate the induction of apoptosis/autophagy and/or necroptotic cell death...
July 7, 2016: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
Jun-Feng Ye, Yuan-Qiang Lin, Xiu-Hua Yu, Ming-Yuan Liu, Yang Li
The effective antitumor immune responses are dependent on coordinate interaction of various effector cells. Thus, the combination of adoptive immunotherapy and target gene therapy is capable of efficiently generating a productive antitumor immune response. We investigated whether combination of cytokine-induced killer (CIK) cells adoptive immunotherapy and CCL21/IL15 armed oncolytic adenovirus could induce the enhanced antitumor activity. The CCL21/IL15 co-expression oncolytic adenoviruses were constructed by using the AdEasy system, which uses homologous recombination with shuttle plasmids and full length Ad backbones...
September 2016: International Immunopharmacology
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