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Immunogenic cell death

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https://www.readbyqxmd.com/read/28720686/oncolytic-virus-induced-cell-death-and-immunity-a-match-made-in-heaven
#1
REVIEW
Jolien De Munck, Alex Binks, Iain A McNeish, Joeri L Aerts
Our understanding of the mechanisms responsible for cancer development has increased enormously over the last decades. However, for many cancers, this has not been translated into a significant improvement in overall survival, and overall mortality remains high. Treatment for many malignancies remains based on surgery, chemotherapy, and radiotherapy. Significant progress has been made toward the development of more specific, more potent, and less invasive treatment modalities, but such targeted therapies remain the exception for most cancers...
July 18, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28719552/immune-checkpoint-inhibitors-in-organ-transplant-patients
#2
Adam S Kittai, Hayden Oldham, Jeremy Cetnar, Matthew Taylor
Modulation of T-cell activity through blockade of coinhibitory molecules has revolutionized the treatment of various malignancies. Several immune checkpoint inhibitors are currently Food and Drug Administration approved which target various coinhibitory pathways including cytotoxic T-lymphocyte-associated protein 4 (CTLA-4), programmed death 1 receptor (PD-1), and programmed cell death ligand-1. Clinical trials that lead to the Food and Drug Administration approval of these agents often excluded patients with an organ transplant...
July 17, 2017: Journal of Immunotherapy
https://www.readbyqxmd.com/read/28714174/immunological-properties-and-protective-efficacy-of-a-single-mycobacterial-antigen-displayed-on-polyhydroxybutyrate-beads
#3
Patricia Rubio-Reyes, Natalie A Parlane, Bryce M Buddle, D Neil Wedlock, Bernd H A Rehm
In 2015, there were an estimated 10.4 million new tuberculosis (TB) cases and 1.4 million deaths worldwide. Bacille Calmette-Guérin (BCG), an attenuated strain of Mycobacterium bovis, is the vaccine available against TB, but it is insufficient for global TB control. This study evaluated the immunogenicity of the Mycobacterium tuberculosis antigen Rv1626 in mice while assessing the effect of co-delivering either Cpe30 (immunostimulatory peptide), CS.T3378-395 (promiscuous T helper epitope) or flagellin (TLR5 agonist) or a combination of all three immunostimulatory agents...
July 17, 2017: Microbial Biotechnology
https://www.readbyqxmd.com/read/28713677/radio-immunotherapy-and-chemo-immunotherapy-as-a-novel-treatment-paradigm-in-malignant-pleural-mesothelioma
#4
REVIEW
Licun Wu, Marc de Perrot
Malignant pleural mesothelioma (MPM) is an aggressive neoplasm with poor outcome. Novel radical radiation techniques using intensity modulated radiation therapy (IMRT) have become an important component of therapy in mesothelioma. Immunotherapy also provides new therapeutic options. However, how best to integrate immunotherapy with standard therapy such as radiation, chemotherapy and surgery remains unknown. A change of paradigm from adjuvant normofractionation to induction accelerated hypofractionated hemithoracic radiation could provide a platform to combine immunotherapy due to the potential benefit of short course high dose radiation on the immune system...
June 2017: Translational Lung Cancer Research
https://www.readbyqxmd.com/read/28698504/impact-of-autophagy-in-oncolytic-adenoviral-therapy-for-cancer
#5
REVIEW
Hiroshi Tazawa, Shinji Kuroda, Joe Hasei, Shunsuke Kagawa, Toshiyoshi Fujiwara
Oncolytic virotherapy has recently emerged as a promising strategy for inducing tumor-specific cell death. Adenoviruses are widely and frequently used in oncolytic virotherapy. The mechanism of oncolytic adenovirus-mediated tumor suppression involves virus-induced activation of the autophagic machinery in tumor cells. Autophagy is a cytoprotective process that produces energy via lysosomal degradation of intracellular components as a physiologic response to various stresses, including hypoxia, nutrient deprivation, and disruption of growth signaling...
July 10, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28697172/immunogenic-chemotherapy-sensitizes-renal-cancer-to-immune-checkpoint-blockade-therapy-in-preclinical-models
#6
Shujin Cui
BACKGROUND Renal cell carcinoma (RCC) is among the most common malignant cancers of males worldwide. For advanced RCC patients, there still is no effective therapy. Immune checkpoint blockade therapies have shown benefits for many cancers, but previous clinical trials of immune checkpoint blockade therapies in RCC patients achieved only modest results. MATERIAL AND METHODS We explored the effects of combining chemotherapy with immune checkpoint blockade therapy in RCC xenograft mouse models. We also studied the potential mechanisms by which chemotherapy might enhance the efficacy of immune checkpoint blockade therapy, both in vitro and in vivo...
July 11, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/28693241/the-novel-immunomodulator-immunepotent-crp-combined-with-chemotherapy-agent-increased-the-rate-of-immunogenic-cell-death-and-prevented-melanoma-growth
#7
Maria Del Carmen Rodríguez-Salazar, Moises Armides Franco-Molina, Edgar Mendoza-Gamboa, Ana Carolina Martínez-Torres, Pablo Zapata-Benavides, Jose Sullivan López-González, Erika Evangelina Coronado-Cerda, Juan Manuel Alcocer-González, Reyes Silvestre Tamez-Guerra, Cristina Rodríguez-Padilla
Immunogenic cell death is a cell death modality that stimulates the immune system to combat cancer cells. IMMUNEPOTENT CRP (ICRP) is a mixture of substances of low molecular weight obtained from bovine spleens that exhibits in vitro cytotoxic activity on different tumor cell lines and modulates the immune response in vivo. The aim of the present study was to determine whether the cytotoxic effect of ICRP and its combination with oxaliplatin (OXP) on murine melanoma B16F10 cells was due to immunogenic cell death...
July 2017: Oncology Letters
https://www.readbyqxmd.com/read/28678778/an-immunogenic-personal-neoantigen-vaccine-for-patients-with-melanoma
#8
Patrick A Ott, Zhuting Hu, Derin B Keskin, Sachet A Shukla, Jing Sun, David J Bozym, Wandi Zhang, Adrienne Luoma, Anita Giobbie-Hurder, Lauren Peter, Christina Chen, Oriol Olive, Todd A Carter, Shuqiang Li, David J Lieb, Thomas Eisenhaure, Evisa Gjini, Jonathan Stevens, William J Lane, Indu Javeri, Kaliappanadar Nellaiappan, Andres M Salazar, Heather Daley, Michael Seaman, Elizabeth I Buchbinder, Charles H Yoon, Maegan Harden, Niall Lennon, Stacey Gabriel, Scott J Rodig, Dan H Barouch, Jon C Aster, Gad Getz, Kai Wucherpfennig, Donna Neuberg, Jerome Ritz, Eric S Lander, Edward F Fritsch, Nir Hacohen, Catherine J Wu
Effective anti-tumour immunity in humans has been associated with the presence of T cells directed at cancer neoantigens, a class of HLA-bound peptides that arise from tumour-specific mutations. They are highly immunogenic because they are not present in normal tissues and hence bypass central thymic tolerance. Although neoantigens were long-envisioned as optimal targets for an anti-tumour immune response, their systematic discovery and evaluation only became feasible with the recent availability of massively parallel sequencing for detection of all coding mutations within tumours, and of machine learning approaches to reliably predict those mutated peptides with high-affinity binding of autologous human leukocyte antigen (HLA) molecules...
July 13, 2017: Nature
https://www.readbyqxmd.com/read/28677730/chemotherapy-oxaliplatin-sensitizes-prostate-cancer-to-immune-checkpoint-blockade-therapies-via-stimulating-tumor-immunogenicity
#9
Jin Zhou, Tuo Yang, Lipeng Liu, Bingxin Lu
Even though standard treatment options are available for prostate cancer patients, prostate cancer is still a leading cause of death in many Western countries due to drug resistance and recurrence. Immune checkpoint blockade therapy has been proved to be very effective in some melanoma patients, which might dependent on the preconditioned immune system. Here we explored the effect of chemotherapy (oxaliplatin) in combination with immune checkpoint blockade therapy (anti‑PD‑1 treatment) in prostate cancer cell lines and pre‑clinical animal models...
June 30, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28674499/phytochemicals-approach-for-developing-cancer-immunotherapeutics
#10
REVIEW
Shu-Yi Yin, Ning-Sun Yang, Tien-Jen Lin
Phytochemicals or their derived compounds are being increasingly recognized as potentially potent complementary treatments for cancer. Among them, some phytochemicals are being actively evaluated for use as adjuvants in anticancer therapies. For instance, shikonin and hypericin were found to induce immunogenic cell death of specific cancer cells, and this effect was able to further activate the recognition activity of tumor cells by the host immune system. On the other hand, some derivatives of phytochemicals, such as dihydrobenzofuran lignan (Q2-3) have been found to induce the secretion of an endogenous anticancer factor, namely IL-25, from non-malignant cells...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/28673339/human-limbal-fibroblast-like-stem-cells-induce-immune-tolerance-in-autoreactive-t-lymphocytes-from-female-patients-with-hashimoto-s-thyroiditis
#11
Antonina Coppola, Laura Tomasello, Maria Pitrone, Salvatore Cillino, Pierina Richiusa, Giuseppe Pizzolanti, Carla Giordano
BACKGROUND: Due to their "natural immune privilege" and immunoregulatory properties human fibroblast-like limbal stem cells (f-LSCs) have acquired great interest as a potential tool for achieving immunotolerance. Hashimoto's thyroiditis (HT) is the most common thyroid autoimmune disease and cause of hypothyroidism. To date, conventional hormone replacement therapy and unspecific immunosuppressive regimens cannot provide a definitive cure for HT subjects. We explored the immunosuppressant potential of human f-LSCs on circulating lymphomonocytes (PBMCs) collected from healthy donors and female HT patients...
July 3, 2017: Stem Cell Research & Therapy
https://www.readbyqxmd.com/read/28668573/safety-and-immunogenicity-of-an-inactivated-cell-culture-derived-h7n9-influenza-vaccine-in-healthy-adults-a-phase-i-ii-prospective-randomized-open-label-trial
#12
Un-In Wu, Szu-Min Hsieh, Wen-Sen Lee, Ning-Chi Wang, Hsiang-Chi Kung, Tsong-Yih Ou, Fu-Lun Chen, Te-Yu Lin, Yee-Chun Chen, Shan-Chwen Chang
BACKGROUND: We conducted a phase I/II clinical trial to evaluate the safety and immunogenicity of a Madin-Darby canine kidney (MDCK) cell-grown inactivated H7N9 influenza vaccine for pandemic preparedness purposes. METHODS: Between April 7, 2015 and May 27, 2016, healthy adults aged 20-60years were enrolled sequentially in phase I (n=40) and phase II (n=160) from three hospitals in Taiwan and randomized to receive 2 doses of whole-virus H7N9 vaccine (15 or 30μg hemagglutinin antigen (HA) with or without an aluminum hydroxide adjuvant) at 21-day intervals...
June 28, 2017: Vaccine
https://www.readbyqxmd.com/read/28650673/evidence-of-interleukin-21-reduction-in-osteosarcoma-patients-due-to-pd-1-pd-l1-mediated-suppression-of-follicular-helper-t-cell-functionality
#13
Wenwu Gao, Junjie Zhou, Bin Ji
Interleukin 21 (IL-21) is crucial for the development of a robust CD8(+) T cell response and has been shown to promote antitumor immunity. Despite the fact that osteosarcoma presents significant genetic instability with a high immunogenic potential, the antitumor immune response in osteosarcoma is ineffective. We investigated whether this was due to impaired IL-21 responses. We found that the circulating CD4(+) T cells, a major source of IL-21, had reduced capacity to express IL-21 in osteosarcoma patients compared to healthy controls...
June 26, 2017: DNA and Cell Biology
https://www.readbyqxmd.com/read/28648866/cytokines-in-immunogenic-cell-death-applications-for-cancer-immunotherapy
#14
REVIEW
Anne Showalter, Arati Limaye, Jeremiah L Oyer, Robert Igarashi, Christina Kittipatarin, Alicja J Copik, Annette R Khaled
Despite advances in treatments like chemotherapy and radiotherapy, metastatic cancer remains a leading cause of death for cancer patients. While many chemotherapeutic agents can efficiently eliminate cancer cells, long-term protection against cancer is not achieved and many patients experience cancer recurrence. Mobilizing and stimulating the immune system against tumor cells is one of the most effective ways to protect against cancers that recur and/or metastasize. Activated tumor specific cytotoxic T lymphocytes (CTLs) can seek out and destroy metastatic tumor cells and reduce tumor lesions...
September 2017: Cytokine
https://www.readbyqxmd.com/read/28648578/application-of-aptamers-in-treatment-and-diagnosis-of-leukemia
#15
REVIEW
Rezvan Yazdian-Robati, Atefeh Arab, Mohammad Ramezani, Khalil Abnous, Seyed Mohammad Taghdisi
Leukemia is a cancer of blood cells and bone marrow, leading to death in many patients mainly in children. Over the last several years, aptamers generated by SELEX (Systematic evolution of ligands by exponential enrichment) method, have quickly become a new class of targeting ligands for drug delivery applications and recently have been widely exploited in different biomedical applications, due to several potent properties such as high binding affinity and selectivity, low or no immunogenicity and toxicity, low cost and thermal stability...
June 23, 2017: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/28647049/targeting-of-regulated-necrosis-in-kidney-disease
#16
Diego Martin-Sanchez, Jonay Poveda, Miguel Fontecha-Barriuso, Olga Ruiz-Andres, María Dolores Sanchez-Niño, Marta Ruiz-Ortega, Alberto Ortiz, Ana Belén Sanz
The term acute tubular necrosis was thought to represent a misnomer derived from morphological studies of human necropsies and necrosis was thought to represent an unregulated passive form of cell death which was not amenable to therapeutic manipulation. Recent advances have improved our understanding of cell death in acute kidney injury. First, apoptosis results in cell loss, but does not trigger an inflammatory response. However, clumsy attempts at interfering with apoptosis (e.g. certain caspase inhibitors) may trigger necrosis and, thus, inflammation-mediated kidney injury...
June 21, 2017: Nefrología: Publicación Oficial de la Sociedad Española Nefrologia
https://www.readbyqxmd.com/read/28638734/severe-but-not-mild-heat-shock-treatment-induces-immunogenic-cell-death-in-cancer-cells
#17
Irena Adkins, Lenka Sadilkova, Nada Hradilova, Jakub Tomala, Marek Kovar, Radek Spisek
The mechanisms of immunogenicity underlying mild heat-shock (mHS) treatment < 42°C of tumor cells are largely attributed to the action of heat-shock proteins; however, little is known about the immunogenicity of tumor cells undergoing severe cytotoxic heat-shock treatment (sHS > 43°C). Here, we found that sHS, but not mHS (42°C), induces immunogenic cell death in human cancer cell lines as defined by the induction of ER stress response and ROS generation, cell surface exposure of calreticulin, HSP70 and HSP90, decrease of cell surface CD47, release of ATP and HMGB1...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28638727/identification-of-an-immunogenic-neo-epitope-encoded-by-mouse-sarcoma-using-cxcr3-ligand-mrnas-as-sensors
#18
Keisuke Fujii, Yoshihiro Miyahara, Naozumi Harada, Daisuke Muraoka, Mitsuhiro Komura, Rui Yamaguchi, Hideo Yagita, Junko Nakamura, Sahoko Sugino, Satoshi Okumura, Seiya Imoto, Satoru Miyano, Hiroshi Shiku
The CXCR3 ligands CXCL9, 10, and 11 play critical roles in the amplification of immune responses by recruiting CXCR3(+) immune effector cells to the tumor site. Taking advantage of this property of CXCR3 ligands, we aimed to establish a novel approach to identify immunogenic mutated-antigens. We examined the feasibility of using CXCR3 ligand mRNAs as sensors for detection of specific immune responses in human and murine systems. We further investigated whether this approach is applicable for the identification of immunogenic mutated-antigens by using murine sarcoma lines...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28634215/vaccination-with-high-affinity-epitopes-impairs-antitumor-efficacy-by-increasing-pd-1expression-on-cd8-t-cells
#19
Christopher D Zahm, Viswa Colluru, Douglas G McNeel
Antitumor vaccines encoding self-antigens generally have low immunogenicity in clinical trials. Several approaches are aimed at improving vaccine immunogenicity, including efforts to alter encoded epitopes. Immunization with epitopes altered for increased affinity for the major histocompatibility complex (MHC) or T-cell receptor (TCR) elicits greater numbers of CD8 T cells but inferior antitumor responses. Our previous results suggested that programmed death 1 (PD-1) and its ligand (PD-L1) increased on antigen-specific CD8 T cells and tumor cells, respectively, after high-affinity vaccination...
June 20, 2017: Cancer Immunology Research
https://www.readbyqxmd.com/read/28633645/generation-of-populations-of-antigen-specific-cytotoxic-t-cells-using-dcs-transfected-with-dna-construct-encoding-her2-neu-tumor-antigen-epitopes
#20
Maria Kuznetsova, Julia Lopatnikova, Julia Khantakova, Rinat Maksyutov, Amir Maksyutov, Sergey Sennikov
BACKGROUND: Recent fundamental and clinical studies have confirmed the effectiveness of utilizing the potential of the immune system to remove tumor cells disseminated in a patient's body. Cytotoxic T lymphocytes (CTLs) are considered the main effectors in cell-mediated antitumor immunity. Approaches based on antigen presentation to CTLs by dendritic cells (DCs) are currently being intensively studied, because DCs are more efficient in tumor antigen presentation to T cells through their initiation of strong specific antitumor immune responses than other types of antigen-presenting cells...
June 20, 2017: BMC Immunology
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