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Immunogenic cell death

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https://www.readbyqxmd.com/read/27910767/immunostimulatory-effects-of-melphalan-and-usefulness-in-adoptive-cell-therapy-with-antitumor-cd4-t-cells
#1
Michal Kuczma, Zhi-Chun Ding, Gang Zhou
The alkylating agent melphalan is used in the treatment of hematological malignancies, especially multiple myeloma. In the past, the usefulness of melphalan has been solely attributed to its cytotoxicity on fastgrowing cancerous cells. Although the immunomodulatory effects of melphalan were suggested many years ago, only recently has this aspect of melphalan's activity begun to be elucidated at the molecular level. Emerging evidence indicates that melphalan can foster an immunogenic microenvironment by inducing immunogenic cell death (ICD) as characterized by membrane translocation of endoplasmic reticulum protein calreticulin (CRT) and by release of chromatin-binding protein high-mobility group box 1 (HMGB1)...
2016: Critical Reviews in Immunology
https://www.readbyqxmd.com/read/27908252/the-combination-of-new-immunotherapy-and-radiotherapy-a-new-potential-treatment-for-locally-advanced-non-small-cell-lung-cancer
#2
Paola Claudia Sacco, Paolo Maione, Cesare Guida, Cesare Gridelli
Lung cancer is the main reason of cancer death worldwide. About 30% of non-small-cell lung cancer (NSCLC) cases are diagnosed with locally advanced disease (stage III). This is a mixed population including patients who have far more extensive and bulky disease than others. Management of these patients continue to be a challenge; frequently, patients have both local recurrence and distant metastases in this stage and the prognosis is very poor with a 5-year overall survival estimated between 3% and 7% for inoperable disease...
December 1, 2016: Current Clinical Pharmacology
https://www.readbyqxmd.com/read/27902471/autophagy-autophagy-associated-adaptive-immune-responses-and-its-role-in-hematologic-malignancies
#3
REVIEW
Liangshun You, Shenhe Jin, Li Zhu, Wenbin Qian
Autophagy is a tightly regulated catabolic process that leads to the degradation of cytoplasmatic components such as aggregated/misfolded proteins and organelles through the lysosomal machinery. Recent studies suggest that autophagy plays such a role in the context of the anti-tumor immune response, make it an attractive target for cancer immunotherapy. Defective autophagy in hematopoietic stem cells may contribute to the development of hematologic malignancies, including leukemia, myelodysplastic syndrome, and lymphoproliferative disorder...
November 25, 2016: Oncotarget
https://www.readbyqxmd.com/read/27897039/use-of-nanotechnology-for-improved-pharmacokinetics-and-activity-of-immunogenic-cell-death-inducers-used-in-cancer-chemotherapy
#4
Martyna Janicka, Jerzy Gubernator
Immunogenic cell death inducers (ICD inducers) are a diverse group of therapeutic molecules capable of eliciting an adaptive immune response against the antigens present on the surface of dying cancer cells. Most of these molecules suffer from low bioavailability, high toxicity and poor pharmacokinetics which limit their application. It is believed that nanotechnology, in particular nano-sized nanocarriers, can address most of the issues that limit the use of ICD inducers. Area covered: The mechanism of action of ICD inducers and their limitations is discussed...
November 29, 2016: Expert Opinion on Drug Delivery
https://www.readbyqxmd.com/read/27896216/recent-advances-in-immunotherapy-in-metastatic-nsclc
#5
REVIEW
Pranshu Bansal, Diaa Osman, Gregory N Gan, George R Simon, Yanis Boumber
Non-small cell lung cancer (NSCLC) is one of most common malignancies and the leading cause of cancer deaths worldwide. Despite advances in targeted therapies, majority of NSCLC patients do not have targetable genomic alterations. Nevertheless, recent discovery that NSCLC is an immunogenic tumor type, and several breakthroughs in immunotherapies have led to rapid expansion of this new treatment modality in NSCLC with recent FDA approvals of programed death receptor-1 inhibitors, such as nivolumab and pembrolizumab...
2016: Frontiers in Oncology
https://www.readbyqxmd.com/read/27895816/clinical-impact-of-chemotherapy-to-improve-tumor-microenvironment-of-pancreatic-cancer
#6
REVIEW
Takahiro Tsuchikawa, Shintaro Takeuchi, Toru Nakamura, Toshiaki Shichinohe, Satoshi Hirano
A perioperative multimodal strategy including combination chemotherapy and radiotherapy, in addition to surgical resection, has been acknowledged to improve patient prognosis. However chemotherapy has not been actively applied as an immunomodulating modality because of concerns about various immunosuppressive effects. It has recently been shown that certain chemotherapeutic agents could modify tumor microenvironment and host immune responses through several underlying mechanisms such as immunogenic cell death, local T-cell infiltration and also the eradication of immune-suppressing regulatory cells such as regulatory T cells (Tregs) and myeloid-derived suppressor cells...
November 15, 2016: World Journal of Gastrointestinal Oncology
https://www.readbyqxmd.com/read/27879972/responses-of-metastatic-basal-cell-and-cutaneous-squamous-cell-carcinomas-to-anti-pd1-monoclonal-antibody-regn2810
#7
Gerald S Falchook, Rom Leidner, Elizabeth Stankevich, Brian Piening, Carlo Bifulco, Israel Lowy, Matthew G Fury
BACKGROUND: Basal cell carcinoma (BCC) and cutaneous squamous cell carcinoma (CSCC) share exposure to UV light as the dominant risk factor, and these tumors therefore harbor high mutation burdens. In other malignancies, high mutation burden has been associated with clinical benefit from therapy with antibodies directed against the Programmed Death 1 (PD-1) immune checkpoint receptor. Highly mutated tumors are more likely to express immunogenic tumor neoantigens that attract effector T cells, which can be unleashed by blockade of the PD-1 immune checkpoint...
2016: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/27867381/a-critical-reappraisal-of-neutrophil-extracellular-traps-and-netosis-mimics-based-on-differential-requirements-for-protein-citrullination
#8
Maximilian F Konig, Felipe Andrade
NETosis, an antimicrobial form of neutrophil cell death, is considered a primary source of citrullinated autoantigens in rheumatoid arthritis (RA) and immunogenic DNA in systemic lupus erythematosus (SLE). Activation of the citrullinating enzyme peptidylarginine deiminase type 4 (PAD4) is believed to be essential for neutrophil extracellular trap (NET) formation and NETosis. PAD4 is therefore viewed as a promising therapeutic target to inhibit the formation of NETs in both diseases. In this review, we examine the evidence for PAD4 activation during NETosis and provide experimental data to suggest that protein citrullination is not a universal feature of NETs...
2016: Frontiers in Immunology
https://www.readbyqxmd.com/read/27863558/development-of-an-autologous-canine-cancer-vaccine-system-for-resectable-malignant-tumors-in-dogs
#9
J R Yannelli, R Wouda, T J Masterson, M G Avdiushko, D A Cohen
While conventional therapies exist for canine cancer, immunotherapies need to be further explored and applied to the canine setting. We have developed an autologous cancer vaccine (K9-ACV), which is available for all dogs with resectable disease. K9-ACV was evaluated for safety and immunogenicity for a variety of cancer types in a cohort of companion dogs under veterinary care. The autologous vaccine was prepared by enzymatic digestion of solid tumor biopsies. The resultant single cell suspensions were then UV-irradiated resulting in immunogenic cell death of the tumor cells...
December 2016: Veterinary Immunology and Immunopathology
https://www.readbyqxmd.com/read/27854240/the-impact-of-chemotherapy-radiation-and-epigenetic-modifiers-in-cancer-cell-expression-of-immune-inhibitory-and-stimulatory-molecules-and-anti-tumor-efficacy
#10
REVIEW
Jessica Ann Chacon, Keith Schutsky, Daniel J Powell
Genomic destabilizers, such as radiation and chemotherapy, and epigenetic modifiers are used for the treatment of cancer due to their apoptotic effects on the aberrant cells. However, these therapies may also induce widespread changes within the immune system and cancer cells, which may enable tumors to avoid immune surveillance and escape from host anti-tumor immunity. Genomic destabilizers can induce immunogenic death of tumor cells, but also induce upregulation of immune inhibitory ligands on drug-resistant cells, resulting in tumor progression...
November 14, 2016: Vaccines
https://www.readbyqxmd.com/read/27836246/emerging-role-of-immunotherapy-in-urothelial-carcinoma-immunobiology-biomarkers
#11
REVIEW
Randy F Sweis, Matthew D Galsky
Urothelial bladder cancer is one of the first cancers recognized to be immunogenic since 40 years ago when the use of bacillus Calmette-Guerin was shown to prevent recurrence. Since that time, our knowledge of immune biology of cancer has expanded tremendously, and patients with bladder cancer finally have new active immunotherapeutic drugs on the horizon. Anti-programmed cell death-1 (PD-1)/programmed cell death ligand-1 (PD-L1) therapy has shown impressively durable responses in urothelial bladder cancer (UBC), but the reported response rates warrant improvement...
December 2016: Urologic Oncology
https://www.readbyqxmd.com/read/27825129/late-stage-inhibition-of-autophagy-enhances-calreticulin-surface-exposure
#12
Dan-Dan Li, Bo Xie, Xiao-Jun Wu, Jing-Jing Li, Ya Ding, Xi-Zhi Wen, Xing Zhang, Shu-Guang Zhu, Wei Liu, Xiao-Shi Zhang, Rui-Qing Peng
Calreticulin (CRT) exposure on the cell surface is essential for inducing immunogenic cell death by chemotherapy. Recent studies have shown conflicting effects of chemotherapy-induced autophagy on CRT exposure in cancer cells. Our data revealed that surface-exposed CRT (Ecto-CRT) emission was attenuated by inhibition of autophagy at early stages; however, inhibition of autophagy at late stages resulted in increased Ecto-CRT. Furthermore, neither autophagy activation nor endoplasmic reticulum (ER) stress induction alone was sufficient for CRT surface exposure...
November 4, 2016: Oncotarget
https://www.readbyqxmd.com/read/27824739/effect-of-the-lymphocyte-to-monocyte-ratio-on-the-clinical-outcome-of-chemotherapy-administration-in-advanced-melanoma-patients
#13
Alexey A Leontovich, Roxana S Dronca, Wendy K Nevala, Michael A Thompson, Lisa A Kottschade, Leonid V Ivanov, Svetomir N Markovic
Skin cancer affects more individuals in the USA than any other malignancy and malignant melanoma is particularly deadly because of its metastatic potential. Melanoma has been recognized as one of the most immunogenic malignancies; therefore, understanding the mechanisms of tumor-immune interaction is key for developing more efficient treatments. As the tumor microenvironment shows an immunosuppressive action, immunotherapeutic agents promoting endogenous immune response to cancer have been tested (interleukin-2, anticytotoxic-T-lymphocyte-associated antigen 4, and antiprogrammed cell death protein 1 monoclonal antibodies) as well as combinations of cytotoxic chemotherapy agents and inhibitors of angiogenesis (taxol/carboplatin/avastin)...
November 7, 2016: Melanoma Research
https://www.readbyqxmd.com/read/27821585/listeria-monocytogenes-induced-cell-death-inhibits-the-generation-of-cell-mediated-immunity
#14
Erin Theisen, John-Demian Sauer
The influence of cell death on adaptive immunity has been studied for decades. Despite these efforts, the intricacies of how various cell death pathways shape immune responses in the context of infection remain unclear, particularly with regards to more recently discovered pathways such as pyroptosis. The emergence of Listeria monocytogenes as a promising immunotherapeutic platform demand a thorough understanding of how cell death induced in the context of infection influences the generation of CD8+ T-cell mediated immune responses...
November 7, 2016: Infection and Immunity
https://www.readbyqxmd.com/read/27817960/multifaceted-immune-responses-and-protective-efficacy-elicited-by-a-recombinant-autolyzed-salmonella-expressing-flic-flagellar-antigen-of-f18-escherichia-coli
#15
Gayeon Won, John Hwa Lee
Porcine edema disease (ED) caused by F18(+) Shiga toxin 2e-producing Escherichia coli (STEC) has imposed significant economic losses in the swine industry worldwide, resulting in sudden deaths in post-weaned piglets. The flagellin protein of F18(+) STEC, a structural component of the flagellar filament, is a known virulence factor that mediates adhesion and invasion to porcine epithelial cells. In this study, Salmonella inactivated by the E lysis gene and expressing the flagellin (fliC) antigen was genetically engineered utilizing a plasmid (pMMP184) carrying an efficient heterologous antigen delivery system...
December 7, 2016: Vaccine
https://www.readbyqxmd.com/read/27810219/non-toxic-perfringolysin-o-and-%C3%AE-toxin-derivatives-as-potential-vaccine-candidates-against-bovine-necrohaemorrhagic-enteritis
#16
S Verherstraeten, E Goossens, B Valgaeren, B Pardon, L Timbermont, F Haesebrouck, R Ducatelle, P Deprez, F Van Immerseel
Bovine necrohaemorrhagic enteritis is a fatal Clostridium perfringens type A-induced disease that is characterised by sudden death. Recently the involvement of perfringolysin O and α-toxin in the development of necrohaemorrhagic lesions in the gut of calves was suggested, and thus derivatives of these toxins are potentially suitable as vaccine antigens. In the current study, the perfringolysin O derivative PFO(L491D), alone or in combination with α-toxin derivative GST-cpa247-370, was evaluated as possible vaccine candidate, using in vitro assays...
November 2016: Veterinary Journal
https://www.readbyqxmd.com/read/27802968/calreticulin-exposure-by-malignant-blasts-correlates-with-robust-anticancer-immunity-and-improved-clinical-outcome-in-aml-patients
#17
Jitka Fucikova, Iva Truxova, Michal Hensler, Etienne Becht, Lenka Kasikova, Irena Moserova, Sarka Vosahlikova, Jana Klouckova, Sarah E Church, Isabelle Cremer, Oliver Kepp, Guido Kroemer, Lorenzo Galluzzi, Cyril Salek, Radek Spisek
Cancer cell death can be perceived as immunogenic by the host only when malignant cells emit immunostimulatory signals (so-called "damage-associated molecular patterns", DAMPs), as they die in the context of failing adaptive responses to stress. Accumulating preclinical and clinical evidence indicates that the capacity of immunogenic cell death (ICD) to (re-)activate an anticancer immune response is key to the success of various chemo- and radiotherapeutic regimens. Malignant blasts from acute myeloid leukemia (AML) patients exposed multiple DAMPs including calreticulin (CRT), heat-shock protein 70 (HSP70) and HSP90 on their plasma membrane irrespective of treatment...
November 1, 2016: Blood
https://www.readbyqxmd.com/read/27761743/immunogenic-decapeptide-in-melanoma-immunotherapy
#18
Navnit Kumar Mishra, Anil Kumar Sharma, Tapan Kumar Mukherjee
Melanoma is a cancer associated with melanocytes of epidermis. There has been a consistent increase in the number of melanoma patients because of the depletion of the ozone layer which makes it of paramount importance to explore the immunogenic potential of various peptides in melanoma therapy. In the current study, a mutated decapeptide (ELAGIGILTV) epitope ID 12941 was taken from the melanoma antigen recognized by T-cells. This epitope displayed relatively better affinity for histocompatibility leukocyte antigen influencing the proliferation of cytotoxic T-cells...
November 2016: Journal of Molecular Modeling
https://www.readbyqxmd.com/read/27757313/trial-watch-immunotherapy-plus-radiation-therapy-for-oncological-indications
#19
REVIEW
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
https://www.readbyqxmd.com/read/27748397/immunogenic-cell-death-in-cancer-and-infectious-disease
#20
Lorenzo Galluzzi, Aitziber Buqué, Oliver Kepp, Laurence Zitvogel, Guido Kroemer
Immunogenicity depends on two key factors: antigenicity and adjuvanticity. The presence of exogenous or mutated antigens explains why infected cells and malignant cells can initiate an adaptive immune response provided that the cells also emit adjuvant signals as a consequence of cellular stress and death. Several infectious pathogens have devised strategies to control cell death and limit the emission of danger signals from dying cells, thereby avoiding immune recognition. Similarly, cancer cells often escape immunosurveillance owing to defects in the molecular machinery that underlies the release of endogenous adjuvants...
October 17, 2016: Nature Reviews. Immunology
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