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Chimeric antigen

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https://www.readbyqxmd.com/read/29147628/trial-watch-adoptively-transferred-cells-for-anticancer-immunotherapy
#1
REVIEW
Carole Fournier, François Martin, Laurence Zitvogel, Guido Kroemer, Lorenzo Galluzzi, Lionel Apetoh
Immunotherapies aimed at strengthening immune effector responses against malignant cells are growing at exponential rates. Alongside, the impressive benefits obtained by patients with advanced melanoma who received adoptively transferred tumor-infiltrating lymphocytes (TILs) have encouraged the scientific community to pursue adoptive cell transfer (ACT)-based immunotherapy. ACT involves autologous or allogenic effector lymphocytes that are generally obtained from the peripheral blood or resected tumors, expanded and activated ex vivo, and administered to lymphodepleted patients...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/29147487/a-study-on-the-immune-response-induced-by-a-dna-vaccine-encoding-mtb32c-hbha-antigen-of-mycobacterium-tuberculosis
#2
Roghayeh Teimourpour, Hadi Peeridogaheh, Amir Teimourpour, Mohsen Arzanlou, Zahra Meshkat
Objectives: Tuberculosis (TB) has still remained a global health issue. One third of the world's population is infected with tuberculosis and the current BCG vaccine has low efficiency; hence, it is necessary to develop a new vaccine against TB. The aim of the current study was to evaluate the efficiency of a novel DNA vaccine encoding Mtb32C-HBHA antigen in inducing specific immune responses against Mycobacterium tuberculosis. Materials and Methods: A DNA plasmid vaccine expressing Mtb32C-HBHA fusion protein was constructed and its ability in protein expression was examined by RT-PCR and Western blot methods...
October 2017: Iranian Journal of Basic Medical Sciences
https://www.readbyqxmd.com/read/29145885/future-perspectives-in-melanoma-research-melanoma-bridge-napoli-november-30th-3rd-december-2016
#3
Paolo A Ascierto, Sanjiv S Agarwala, Gennaro Ciliberto, Sandra Demaria, Reinhard Dummer, Connie P M Duong, Soldano Ferrone, Silvia C Formenti, Claus Garbe, Ruth Halaban, Samir Khleif, Jason J Luke, Lluis M Mir, Willem W Overwijk, Michael Postow, Igor Puzanov, Paul Sondel, Janis M Taube, Per Thor Straten, David F Stroncek, Jennifer A Wargo, Hassane Zarour, Magdalena Thurin
Major advances have been made in the treatment of cancer with targeted therapy and immunotherapy; several FDA-approved agents with associated improvement of 1-year survival rates became available for stage IV melanoma patients. Before 2010, the 1-year survival were quite low, at 30%; in 2011, the rise to nearly 50% in the setting of treatment with Ipilimumab, and rise to 70% with BRAF inhibitor monotherapy in 2013 was observed. Even more impressive are 1-year survival rates considering combination strategies with both targeted therapy and immunotherapy, now exceeding 80%...
November 16, 2017: Journal of Translational Medicine
https://www.readbyqxmd.com/read/29144000/design-expression-and-evaluation-of-novel-chimeric-protein-constructed-from-colorectal-tumor-associated-antigen
#4
Ziba Veisi Malekshahi, Jafar Amani, Babak Negahdari, Masoumeh Rajabibazi, Walead Ebrahimizadeh
There were 134,000 new diagnosis and 49,000 deaths in 2016 due to colorectal cancer. Similar to most cancers, early diagnosis increases the chance of successful treatment. Detection of tumor-associated antigens or the immune response against such markers is one of the most common methods of diagnosis. In that regard, we aimed to design and express a chimeric protein from the most common tumor-associated antigens in colorectal cancer and assess its ability to detect the immune response in comparison with the parental tumor-associated antigens in patient's sera...
November 16, 2017: Journal of Cellular Biochemistry
https://www.readbyqxmd.com/read/29143289/agents-in-development-for-childhood-acute-lymphoblastic-leukemia
#5
REVIEW
Kelly W Maloney, Lia Gore
Acute lymphoblastic leukemia (ALL) is the most common cancer in childhood. Standard chemotherapy has afforded outstanding outcomes for many patients; however, there remain some sub-groups with high-risk features, refractory disease, and patients that  relapse who have a poor prognosis with conventional treatments. Over the past decade, there have been significant advances in newer treatment options, including improved monoclonal antibody therapies, T cell engagers, and chimeric antigen T-cell receptor products, all of which have changed the landscape for patients who relapse...
November 15, 2017: Paediatric Drugs
https://www.readbyqxmd.com/read/29143249/next-generation-chimeric-antigen-receptor-t-cell-therapy-going-off-the-shelf
#6
Marco Ruella, Saad S Kenderian
Autologous, patient-specific chimeric antigen receptor T-cell (CART) therapy has emerged as a powerful and potentially curative therapy for cancer, especially for CD19-positive hematological malignancies. Indeed, on August 30, 2017, the University of Pennsylvania-designed CD19-directed CART (CART-19) cell therapy (CTL019, tisagenlecleucel-t, Kymriah - Novartis) became the first CART therapy approved by the Food and Drug Administration (FDA) for acute lymphoblastic leukemia. However, the development of CART technology and its wider application is partly limited by the patient-specific nature of such a platform and by the time required for manufacturing...
November 16, 2017: BioDrugs: Clinical Immunotherapeutics, Biopharmaceuticals and Gene Therapy
https://www.readbyqxmd.com/read/29141027/the-efficacy-of-chimeric-antigen-receptor-car-immunotherapy-in-animal-models-for-solid-tumors-a-systematic-review-and-meta-analysis
#7
Yingcheng Wu, Ran Xu, Keren Jia, Hui Shi
BACKGROUND: Most recently, an emerging theme in the field of tumor immunology predominates: chimeric antigen receptor (CAR) therapy in treating solid tumors. The number of related preclinical trials was surging. However, an evaluation of the effects of preclinical studies remained absent. Hence, a meta-analysis was conducted on the efficacy of CAR in animal models for solid tumors. METHODS: The authors searched PubMed/Medline, Embase, and Google scholar up to April 2017...
2017: PloS One
https://www.readbyqxmd.com/read/29140829/guiding-regulatory-t-cells-to-the-allograft
#8
Caroline Lamarche, Megan K Levings
PURPOSE OF REVIEW: The application of regulatory T cell (Treg) therapy in organ transplantation is actively being pursued using unmodified, typically polyclonal cells. As the results of these ongoing clinical trials emerge, it is time to plan the next wave of clinical trials of Tregs. Here we will review a key strategy to improve Treg effectiveness and reduce side effects, namely increasing Treg specificity - both in terms of antigen recognition and localization to the allograft. RECENT FINDINGS: Study of chemokine signatures accompanying acute rejection has revealed several chemokines that could be targeted to increase Treg homing...
November 14, 2017: Current Opinion in Organ Transplantation
https://www.readbyqxmd.com/read/29138340/phase-i-study-of-chimeric-antigen-receptor-modified-t-cells-in-patients-with-egfr-positive-advanced-biliary-tract-cancers
#9
Yelei Guo, Kai-Chao Feng, Yang Liu, Zhiqiang Wu, Hanren Dai, Qing-Ming Yang, Yao Wang, Hejin Jia, Weidong Han
PURPOSE: This study is an expanded and parallel clinical trial of epidermal growth factor receptor (EGFR)-specific chimeric antigen receptor-engineered autologous T (CART) cell immunotherapy (NCT01869166) to assess the safety and activity of CART-EGFR cell therapy in EGFR-positive advanced unresectable, relapsed/metastatic biliary tract cancers (BTCs). PATIENTS AND METHODS: Patients with EGFR-positive (>50%) advanced unresectable, relapsed/metastatic BTCs were enrolled...
November 14, 2017: Clinical Cancer Research: An Official Journal of the American Association for Cancer Research
https://www.readbyqxmd.com/read/29133883/pseudomonas-aeruginosa-defends-against-phages-through-type-iv-pilus-glycosylation
#10
Hanjeong Harvey, Joseph Bondy-Denomy, Hélène Marquis, Kristina M Sztanko, Alan R Davidson, Lori L Burrows
Since phages present a major challenge to survival in most environments, bacteria express a battery of anti-phage defences including CRISPR-Cas, restriction-modification and abortive infection systems (1-4) . Such strategies are effective, but the phage genome-which encodes potentially inhibitory gene products-is still allowed to enter the cell. The safest way to preclude phage infection is to block initial phage adsorption to the cell. Here, we describe a cell-surface modification that blocks infection by certain phages...
November 13, 2017: Nature Microbiology
https://www.readbyqxmd.com/read/29133571/development-of-protective-immunity-in-new-zealand-white-rabbits-challenged-with-bacillus-anthracis-spores-and-treated-with-antibiotics-and-obiltoxaximab-a-monoclonal-antibody-against-protective-antigen
#11
Lisa N Henning, Sarah Carpenter, Gregory V Stark, Natalya V Serbina
Recommended management of inhalational anthrax, a high-priority bioterrorist threat, includes antibiotics and antitoxins. Obiltoxaximab, a chimeric monoclonal antibody against anthrax Protective Antigen (PA) is licensed under the U.S. Food and Drug Administration's (FDA's) Animal Rule for treatment of inhalational anthrax. Because of spore latency, disease re-emergence after treatment cessation is a concern and there is a need to understand development of endogenous protective immune responses following antitoxin-containing anthrax treatment regimens...
November 13, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/29133316/study-protocol-for-think-a-multinational-open-label-phase-i-study-to-assess-the-safety-and-clinical-activity-of-multiple-administrations-of-nkr-2-in-patients-with-different-metastatic-tumour-types
#12
Caroline Lonez, Bikash Verma, Alain Hendlisz, Philippe Aftimos, Ahmad Awada, Eric Van Den Neste, Gaetan Catala, Jean-Pascal H Machiels, Fanny Piette, Jason B Brayer, David A Sallman, Tessa Kerre, Kunle Odunsi, Marco L Davila, David E Gilham, Frédéric F Lehmann
INTRODUCTION: NKR-2 are autologous T cells genetically modified to express a chimeric antigen receptor (CAR) comprising a fusion of the natural killer group 2D (NKG2D) receptor with the CD3ζ signalling domain, which associates with the adaptor molecule DNAX-activating protein of 10 kDa (DAP10) to provide co-stimulatory signal upon ligand binding. NKG2D binds eight different ligands expressed on the cell surface of many tumour cells and which are normally absent on non-neoplastic cells...
November 12, 2017: BMJ Open
https://www.readbyqxmd.com/read/29132473/-progress-in-clinical-studies-of-chimeric-antigen-receptor-engineered-t-cells-for-treatment-of-childhood-cancer
#13
Ya-Ru Ni, Xiao-Jun Xu, Yong-Min Tang
Nowadays, the 5-year survival rate of childhood cancer patients can be more than 80%, but some patients with relapse and refractory cancers have shown no good response to traditional strategies. Chimeric antigen receptor engineered T (CAR-T) cell therapy is promising for these patients. CAR-T cells recognize the tumor-associated antigens in a non-major histocompatibility complex-restricted manner, so their anti-tumor ability is enhanced. There are four generations of CAR-T cells now. The complete remission rate of pediatric patients with relapse and refractory acute lymphoblastic leukemia can be as high as 90% when treated with CD19-targeting CAR-T cells...
November 2017: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/29132013/chimeric-antigen-receptor-modified-t-cells-redirected-to-epha2-for-the-immunotherapy-of-non-small-cell-lung-cancer
#14
Ning Li, Shaohui Liu, Mingjiao Sun, Wei Chen, Xiaogang Xu, Zhu Zeng, Yemin Tang, Yongquan Dong, Alex H Chang, Qiong Zhao
Erythropoietin-producing hepatocellular carcinoma A2 (EphA2) is overexpressed in more than 90% of non-small cell lung cancer (NSCLC) but not significantly in normal lung tissue. It is therefore an important tumor antigen target for chimeric antigen receptors (CAR)-T-based therapy in NSCLC. Here, we developed a specific CAR targeted to EphA2, and the anti-tumor effects of this CAR were investigated. A second generation CAR with co-stimulatory receptor 4-1BB targeted to EphA2 was developed. The functionality of EphA2-specific T cells in vitro was tested with flow cytometry and real-time cell electronic sensing system assays...
November 10, 2017: Translational Oncology
https://www.readbyqxmd.com/read/29131157/targeting-the-t-cell-receptor-%C3%AE-chain-constant-region-for-immunotherapy-of-t-cell-malignancies
#15
Paul M Maciocia, Patrycja A Wawrzyniecka, Brian Philip, Ida Ricciardelli, Ayse U Akarca, Shimobi C Onuoha, Mateusz Legut, David K Cole, Andrew K Sewell, Giuseppe Gritti, Joan Somja, Miguel A Piris, Karl S Peggs, David C Linch, Teresa Marafioti, Martin A Pule
Mature T cell cancers are typically aggressive, treatment resistant and associated with poor prognosis. Clinical application of immunotherapeutic approaches has been limited by a lack of target antigens that discriminate malignant from healthy (normal) T cells. Unlike B cell depletion, pan-T cell aplasia is prohibitively toxic. We report a new targeting strategy based on the mutually exclusive expression of T cell receptor β-chain constant domains 1 and 2 (TRBC1 and TRBC2). We identify an antibody with unique TRBC1 specificity and use it to demonstrate that normal and virus-specific T cell populations contain both TRBC1(+) and TRBC2(+) compartments, whereas malignancies are restricted to only one...
November 13, 2017: Nature Medicine
https://www.readbyqxmd.com/read/29129918/intratumoral-cd40-activation-and-checkpoint-blockade-induces-t-cell-mediated-eradication-of-melanoma-in-the-brain
#16
Manisha Singh, Christina Vianden, Mark J Cantwell, Zhimin Dai, Zhilan Xiao, Meenu Sharma, Hiep Khong, Ashvin R Jaiswal, Faisal Faak, Yared Hailemichael, L M E Janssen, Uddalak Bharadwaj, Michael A Curran, Adi Diab, Roland L Bassett, David J Tweardy, Patrick Hwu, Willem W Overwijk
CD40 agonists bind the CD40 molecule on antigen-presenting cells and activate them to prime tumor-specific CD8(+) T cell responses. Here, we study the antitumor activity and mechanism of action of a nonreplicating adenovirus encoding a chimeric, membrane-bound CD40 ligand (ISF35). Intratumoral administration of ISF35 in subcutaneous B16 melanomas generates tumor-specific, CD8(+) T cells that express PD-1 and suppress tumor growth. Combination therapy of ISF35 with systemic anti-PD-1 generates greater antitumor activity than each respective monotherapy...
November 13, 2017: Nature Communications
https://www.readbyqxmd.com/read/29129708/efficacy-of-hepatitis-b-virus-ribonuclease-h-inhibitors-a-new-class-of-replication-antagonists-in-frg-human-liver-chimeric-mice
#17
Kelly R Long, Elena Lomonosova, Qilan Li, Nathan L Ponzar, Juan A Villa, Erin Touchette, Stephen Rapp, R Matt Liley, Ryan P Murelli, Alexandre Grigoryan, R Mark Buller, Lisa Wilson, John Bial, John E Sagartz, John E Tavis
Chronic hepatitis B virus infection cannot be cured by current therapies, so new treatments are urgently needed. We recently identified novel inhibitors of the hepatitis B virus ribonuclease H that suppress viral replication in cell culture. Here, we employed immunodeficient FRG KO mice whose livers had been engrafted with primary human hepatocytes to ask whether ribonuclease H inhibitors can suppress hepatitis B virus replication in vivo. Humanized FRG KO mice infected with hepatitis B virus were treated for two weeks with the ribonuclease H inhibitors #110, an α-hydroxytropolone, and #208, an N-hydroxypyridinedione...
November 9, 2017: Antiviral Research
https://www.readbyqxmd.com/read/29129705/a-virus-like-particle-of-the-hepatitis-b-virus-pres-antigen-elicits-robust-neutralizing-antibody-and-t-cell-responses-in-mice
#18
Xiaodan Cai, Weihao Zheng, Shaokun Pan, Shengyuan Zhang, Youhua Xie, Haitao Guo, Guoxin Wang, Zigang Li, Ming Luo
The preS antigen of hepatitis B virus (HBV) corresponds to the N-terminal polypeptide in the large (L) antigen in addition to the small (S) antigen. The virus-like particle (VLP) of the S antigen is widely used as a vaccine to protect the population from HBV infection. The presence of the S antigen and its antibodies in patient blood has been used as markers to monitor hepatitis B. However, there is very limited knowledge about the preS antigen. We generated a preS VLP that is formed by a chimeric protein between preS and hemagglutinin (HA), and the matrix protein M1 of influenza virus...
November 9, 2017: Antiviral Research
https://www.readbyqxmd.com/read/29127433/targeting-and-suppression-of-her3-positive-breast-cancer-by-t-lymphocytes-expressing-a-heregulin-chimeric-antigen-receptor
#19
Bai-Le Zuo, Bo Yan, Guo-Xu Zheng, Wen-Jin Xi, Xiao Zhang, An-Gang Yang, Lin-Tao Jia
Chimeric antigen receptor-modulated T lymphocytes (CAR-T) have emerged as a powerful tool for arousing anticancer immunity. Endogenous ligands for tumor antigen may outperform single-chain variable fragments to serve as a component of CARs with high cancer recognition efficacy and minimized immunogenicity. As heterodimerization and signaling partners for human epidermal growth factor receptor 2 (HER2), HER3/HER4 has been implicated in tumorigenic signaling and therapeutic resistance of breast cancer. In this study, we engineered T cells with a CAR consisting of the extracellular domain of heregulin-1β (HRG1β) that is a natural ligand for HER3/HER4, and evaluated the specific cytotoxicity of these CAR-T cells in cultured HER3 positive breast cancer cells and xenograft tumors...
November 10, 2017: Cancer Immunology, Immunotherapy: CII
https://www.readbyqxmd.com/read/29126914/targeting-immuno-metabolism-to-improve-anti-cancer-therapies
#20
Kevin Beezhold, Craig A Byersdorfer
The immunology community has made significant strides in recent years in using the immune system to target and eliminate cancer. Therapies such as hematopoietic stem cell transplantation (HSCT) are the standard of care treatment for several malignancies, while therapies incorporating chimeric antigen receptor (CAR) T cells or checkpoint molecule blockade have been revolutionary. However, these approaches are not optimal for all cancers and in some cases, have failed outright. The greatest obstacle to making these therapies more effective may be rooted in one of the most basic concepts of cell biology, metabolism...
November 7, 2017: Cancer Letters
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