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https://www.readbyqxmd.com/read/28434148/advancing-chimeric-antigen-receptor-t-cell-therapy-with-crispr-cas9
#1
REVIEW
Jiangtao Ren, Yangbing Zhao
The clustered regularly interspaced short palindromic repeats (CRISPR)/CRISPR-associated 9 (CRISPR/Cas9) system, an RNA-guided DNA targeting technology, is triggering a revolution in the field of biology. CRISPR/Cas9 has demonstrated great potential for genetic manipulation. In this review, we discuss the current development of CRISPR/Cas9 technologies for therapeutic applications, especially chimeric antigen receptor (CAR) T cell-based adoptive immunotherapy. Different methods used to facilitate efficient CRISPR delivery and gene editing in T cells are compared...
April 22, 2017: Protein & Cell
https://www.readbyqxmd.com/read/28434147/increasing-the-safety-and-efficacy-of-chimeric-antigen-receptor-t-cell-therapy
#2
REVIEW
Hua Li, Yangbing Zhao
Chimeric antigen receptor (CAR) T cell therapy is a promising cancer treatment that has recently been undergoing rapid development. However, there are still some major challenges, including precise tumor targeting to avoid off-target or "on-target/off-tumor" toxicity, adequate T cell infiltration and migration to solid tumors and T cell proliferation and persistence across the physical and biochemical barriers of solid tumors. In this review, we focus on the primary challenges and strategies to design safe and effective CAR T cells, including using novel cutting-edge technologies for CAR and vector designs to increase both the safety and efficacy, further T cell modification to overcome the tumor-associated immune suppression, and using gene editing technologies to generate universal CAR T cells...
April 22, 2017: Protein & Cell
https://www.readbyqxmd.com/read/28433515/understanding-clinical-development-of-chimeric-antigen-receptor-t-cell-therapies
#3
Sofieke de Wilde, Henk-Jan Guchelaar, Maarten Laurens Zandvliet, Pauline Meij
BACKGROUND AIMS: In the past decade, many clinical trials with gene- and cell-based therapies (GCTs) have been performed. Increased interest in the development of these drug products by various stakeholders has become apparent. Despite this growth in clinical studies, the number of therapies receiving marketing authorization approval (MAA) is lagging behind. To enhance the success rate of GCT development, it is essential to better understand the clinical development of these products...
April 19, 2017: Cytotherapy
https://www.readbyqxmd.com/read/28433402/sensing-bad-are-co-stimulatory-car-expressing-%C3%AE-%C3%AE-t-cells-safer
#4
Robin Parihar
No abstract text is available yet for this article.
April 19, 2017: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/28428885/the-why-what-and-how-of-the-new-fact-standards-for-immune-effector-cells
#5
EDITORIAL
Marcela V Maus, Sarah Nikiforow
Novel cellular therapies outside of traditional hematopoietic stem cell transplantation or hematopoietic progenitor cell (HPC) therapy are currently under evaluation in clinical trials across the United States and around the world. Several cellular products, e.g., CD19-directed Chimeric Antigen Receptor (CAR) T cells, are poised for FDA approval and thus increased use at a wider range of academic centers within the next year, with the likelihood of dissemination to standard oncology practice once safety is confirmed...
2017: Journal for Immunotherapy of Cancer
https://www.readbyqxmd.com/read/28428443/mechanisms-of-pinometostat-epz-5676-treatment-emergent-resistance-in-mll-rearranged-leukemia
#6
Carly T Campbell, Jessica N Haladyna, David A Drubin, Ty M Thomson, Michael J Maria, Taylor Yamauchi, Nigel J Waters, Edward J Olhava, Roy M Pollock, Jesse J Smith, Robert A Copeland, Stephen J Blakemore, Kathrin M Bernt, Scott R Daigle
DOT1L is a protein methyltransferase involved in the development and maintenance of MLL-rearranged (MLL-r) leukemia through its ectopic methylation of histones associated with well characterized leukemic genes.  Pinometostat (EPZ-5676), a selective inhibitor of DOT1L, is in clinical development in relapsed/refractory acute leukemia patients harboring rearrangements of the MLL gene. The observation of responses and subsequent relapses in the adult trial treating MLL-r patients motivated preclinical investigations into potential mechanisms of pinometostat treatment emergent resistance (TER) in cell lines confirmed to have MLL-r...
April 20, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28428075/immunotherapy-of-hepatocellular-carcinoma-using-chimeric-antigen-receptors-and-bispecific-antibodies
#7
Sayed Shahabuddin Hoseini, Nai-Kong V Cheung
Hepatocellular carcinoma (HCC) is one of the most lethal cancers worldwide with an overall survival rate of less than 15% in developed countries. Despite attempts at new therapeutic strategies, the majority of patients succumb to this cancer. Buttressed by the highly successful clinical impact in melanoma, immunotherapy is gaining momentum as the next treatment modality for many human cancers. Chimeric antigen receptors (CAR) contain the antigen binding moieties of a monoclonal antibody and the co-stimulatory and signaling domains associated with effector receptor signaling...
April 17, 2017: Cancer Letters
https://www.readbyqxmd.com/read/28426845/her2-specific-chimeric-antigen-receptor-modified-virus-specific-t-cells-for-progressive-glioblastoma-a-phase-1-dose-escalation-trial
#8
Nabil Ahmed, Vita Brawley, Meenakshi Hegde, Kevin Bielamowicz, Mamta Kalra, Daniel Landi, Catherine Robertson, Tara L Gray, Oumar Diouf, Amanda Wakefield, Alexia Ghazi, Claudia Gerken, Zhongzhen Yi, Aidin Ashoori, Meng-Fen Wu, Hao Liu, Cliona Rooney, Gianpietro Dotti, Adrian Gee, Jack Su, Yvonne Kew, David Baskin, Yi Jonathan Zhang, Pamela New, Bambi Grilley, Milica Stojakovic, John Hicks, Suzanne Z Powell, Malcolm K Brenner, Helen E Heslop, Robert Grossman, Winfried S Wels, Stephen Gottschalk
Importance: Glioblastoma is an incurable tumor, and the therapeutic options for patients are limited. Objective: To determine whether the systemic administration of HER2-specific chimeric antigen receptor (CAR)-modified virus-specific T cells (VSTs) is safe and whether these cells have antiglioblastoma activity. Design, Setting, and Participants: In this open-label phase 1 dose-escalation study conducted at Baylor College of Medicine, Houston Methodist Hospital, and Texas Children's Hospital, patients with progressive HER2-positive glioblastoma were enrolled between July 25, 2011, and April 21, 2014...
April 20, 2017: JAMA Oncology
https://www.readbyqxmd.com/read/28425600/car-t-cell-manufacturing-time-to-put-it-in-gear
#9
EDITORIAL
Alexey Bersenev
No abstract text is available yet for this article.
May 2017: Transfusion
https://www.readbyqxmd.com/read/28421069/engineering-chimeric-antigen-receptor-t-cells-for-racing-in-solid-tumors-don-t-forget-the-fuel
#10
REVIEW
Melita Irving, Romain Vuillefroy de Silly, Kirsten Scholten, Nahzli Dilek, George Coukos
T-cells play a critical role in tumor immunity. Indeed, the presence of tumor-infiltrating lymphocytes is a predictor of favorable patient prognosis for many indications and is a requirement for responsiveness to immune checkpoint blockade therapy targeting programmed cell death 1. For tumors lacking immune infiltrate, or for which antigen processing and/or presentation has been downregulated, a promising immunotherapeutic approach is chimeric antigen receptor (CAR) T-cell therapy. CARs are hybrid receptors that link the tumor antigen specificity and affinity of an antibody-derived single-chain variable fragment with signaling endodomains associated with T-cell activation...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28416815/in-situ-programming-of-leukaemia-specific-t-cells-using-synthetic-dna-nanocarriers
#11
Tyrel T Smith, Sirkka B Stephan, Howell F Moffett, Laura E McKnight, Weihang Ji, Diana Reiman, Emmy Bonagofski, Martin E Wohlfahrt, Smitha P S Pillai, Matthias T Stephan
An emerging approach for treating cancer involves programming patient-derived T cells with genes encoding disease-specific chimeric antigen receptors (CARs), so that they can combat tumour cells once they are reinfused. Although trials of this therapy have produced impressive results, the in vitro methods they require to generate large numbers of tumour-specific T cells are too elaborate for widespread application to treat cancer patients. Here, we describe a method to quickly program circulating T cells with tumour-recognizing capabilities, thus avoiding these complications...
April 17, 2017: Nature Nanotechnology
https://www.readbyqxmd.com/read/28416139/cars-synthetic-immunoreceptors-for-cancer-therapy-and-beyond
#12
REVIEW
ZeNan L Chang, Yvonne Y Chen
Chimeric antigen receptors (CARs) are versatile synthetic receptors that provide T cells with engineered specificity. Clinical success in treating B-cell malignancies has demonstrated the therapeutic potential of CAR-T cells against cancer, and efforts are underway to expand the use of engineered T cells to the treatment of diverse medical conditions, including infections and autoimmune diseases. Here, we review current understanding of the molecular properties of CARs, how this knowledge informs the rational design and characterization of novel receptors, the successes and shortcomings of CAR-T cells in the clinic, and emerging solutions for the continued improvement of CAR-T cell therapy...
April 13, 2017: Trends in Molecular Medicine
https://www.readbyqxmd.com/read/28413717/advances-of-cd19-directed-chimeric-antigen-receptor-modified-t-cells-in-refractory-relapsed-acute-lymphoblastic-leukemia
#13
REVIEW
Guoqing Wei, Lijuan Ding, Jiasheng Wang, Yongxian Hu, He Huang
Refractory/relapsed B-cell acute lymphoblastic leukemia remains to be a significant cause of cancer-associated morbidity and mortality for children and adults. Developing novel and effective molecular-targeted approaches is thus a major priority. Chimeric antigen receptor-modified T cell (CAR-T) therapy, as one of the most promising targeted immunotherapies, has drawn extensive attention and resulted in multiple applications. According to published studies, CD19-directed CAR-T cells (CD19 CAR-T) can reach a complete remission rate of 94% in both children and adults with refractory/relapsed ALL, much higher than that of chemotherapy...
2017: Experimental Hematology & Oncology
https://www.readbyqxmd.com/read/28411126/low-interleukin-2-concentration-favors-generation-of-early-memory-t-cells-over-effector-phenotypes-during-chimeric-antigen-receptor-t-cell-expansion
#14
Tanja Kaartinen, Annu Luostarinen, Pilvi Maliniemi, Joni Keto, Mikko Arvas, Heini Belt, Jonna Koponen, Angelica Loskog, Satu Mustjoki, Kimmo Porkka, Seppo Ylä-Herttuala, Matti Korhonen
BACKGROUND: Adoptive T-cell therapy offers new options for cancer treatment. Clinical results suggest that T-cell persistence, depending on T-cell memory, improves efficacy. The use of interleukin (IL)-2 for in vitro T-cell expansion is not straightforward because it drives effector T-cell differentiation but does not promote the formation of T-cell memory. We have developed a cost-effective expansion protocol for chimeric antigen receptor (CAR) T cells with an early memory phenotype...
April 11, 2017: Cytotherapy
https://www.readbyqxmd.com/read/28410137/flag-tagged-cd19-specific-car-t-cells-eliminate-cd19-bearing-solid-tumor-cells-in-vitro-and-in-vivo
#15
Robert Berahovich, Shirley Xu, Hua Zhou, Hizkia Harto, Qumiao Xu, Andres Garcia, Fenyong Liu, Vita M Golubovskaya, Lijun Wu
Autologous T cells expressing chimeric antigen receptors (CARs) specific for CD19 have demonstrated remarkable efficacy as therapeutics for B cell malignancies. In the present study, we generated FLAG-tagged CD19-specific CAR-T cells (CD19-FLAG) and compared them to their non-tagged counterparts for their effects on solid and hematological cancer cells in vitro and in vivo. For solid tumors, we used HeLa cervical carcinoma cells engineered to overexpress CD19 (HeLa-CD19), and for hematological cancer we used Raji Burkitt's lymphoma cells, which endogenously express CD19...
June 1, 2017: Frontiers in Bioscience (Landmark Edition)
https://www.readbyqxmd.com/read/28408724/from-protection-to-entitlement-selecting-research-subjects-for-early-phase-clinical-trials-involving-breakthrough-therapies
#16
Nancy S Jecker, Aaron G Wightman, Abby R Rosenberg, Douglas S Diekema
Our goals are to (1) set forth and defend a multiprinciple system for selecting individuals who meet trial eligibility criteria to participate in early phase clinical trials testing chimeric antigen receptor (CAR T-cell) for acute lymphoblastic leukaemia when demand for participation exceeds spaces available in a trial; (2) show the relevance of these selection criteria to other breakthrough experimental therapies; (3) argue that distinct distributive justice criteria apply to breakthrough experimental therapies, standard research and healthcare and (4) argue that as evidence of benefit increases, the emphasis of justice in research shifts from protecting subjects from harm to ensuring fair access to benefits...
April 13, 2017: Journal of Medical Ethics
https://www.readbyqxmd.com/read/28408462/intent-to-treat-leukemia-remission-by-cd19car-t-cells-of-defined-formulation-and-dose-in-children-and-young-adults
#17
Rebecca A Gardner, Olivia Finney, Colleen Annesley, Hannah Brakke, Corinne Summers, Kasey Leger, Marie Bleakley, Christopher Brown, Stephanie Mgebroff, Karen Spratt, Virginia Hoglund, Catherine Lindgren, Assaf P Oron, Daniel Li, Stanley R Riddell, Julie R Park, Michael C Jensen
Transitioning CD19-directed CAR-T cells from early phase trials in relapsed patients to a viable therapeutic approach with predictable efficacy and low toxicity for broad application in patients with high unmet need is currently complicated by product heterogeneity resulting from transduction of undefined T cell mixtures, variability of transgene expression, and terminal differentiation of cells at the end of culture. A phase 1 trial of 45 children and young adults with relapsed or refractory B-lineage ALL was conducted using a CD19 CAR product of defined CD4/CD8 composition, uniform CAR expression, and limited effector differentiation...
April 13, 2017: Blood
https://www.readbyqxmd.com/read/28407743/new-drugs-new-toxicities-severe-side-effects-of-modern-targeted-and-immunotherapy-of-cancer-and-their-management
#18
REVIEW
Frank Kroschinsky, Friedrich Stölzel, Simone von Bonin, Gernot Beutel, Matthias Kochanek, Michael Kiehl, Peter Schellongowski
Pharmacological and cellular treatment of cancer is changing dramatically with benefits for patient outcome and comfort, but also with new toxicity profiles. The majority of adverse events can be classified as mild or moderate, but severe and life-threatening complications requiring ICU admission also occur. This review will focus on pathophysiology, symptoms, and management of these events based on the available literature.While standard antineoplastic therapy is associated with immunosuppression and infections, some of the recent approaches induce overwhelming inflammation and autoimmunity...
April 14, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/28405515/psca-and-muc1-in-non-small-cell-lung-cancer-as-targets-of-chimeric-antigen-receptor-t-cells
#19
Xinru Wei, Yunxin Lai, Jin Li, Le Qin, Youdi Xu, Ruocong Zhao, Baiheng Li, Simiao Lin, Suna Wang, Qiting Wu, Qiubin Liang, Muyun Peng, Fenglei Yu, Yangqiu Li, Xuchao Zhang, Yilong Wu, Pentao Liu, Duanqing Pei, Yao Yao, Peng Li
In recent years, immunotherapies, such as those involving chimeric antigen receptor (CAR) T cells, have become increasingly promising approaches to non-small-cell lung cancer (NSCLC) treatment. In this study, we explored the antitumor potential of prostate stem cell antigen (PSCA)-redirected CAR T and mucin 1 (MUC1)-redirected CAR T cells in tumor models of NSCLC. First, we generated patient-derived xenograft (PDX) mouse models of human NSCLC that maintained the antigenic profiles of primary tumors. Next, we demonstrated the expression of PSCA and MUC1 in NSCLC, followed by the generation and confirmation of the specificity and efficacy of PSCA- and MUC1-targeting CAR T cells against NSCLC cell lines in vitro...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28405508/antigen-receptor-redirected-t-cells-derived-from-hematopoietic-precursor-cells-lack-expression-of-the-endogenous-tcr-cd3-receptor-and-exhibit-specific-antitumor-capacities
#20
Yasmine Van Caeneghem, Stijn De Munter, Paola Tieppo, Glenn Goetgeluk, Karin Weening, Greet Verstichel, Sarah Bonte, Tom Taghon, Georges Leclercq, Tessa Kerre, Reno Debets, David Vermijlen, Hinrich Abken, Bart Vandekerckhove
Recent clinical studies indicate that adoptive T-cell therapy and especially chimeric antigen receptor (CAR) T-cell therapy is a very potent and potentially curative treatment for B-lineage hematologic malignancies. Currently, autologous peripheral blood T cells are used for adoptive T-cell therapy. Adoptive T cells derived from healthy allogeneic donors may have several advantages; however, the expected occurrence of graft versus host disease (GvHD) as a consequence of the diverse allogeneic T-cell receptor (TCR) repertoire expressed by these cells compromises this approach...
2017: Oncoimmunology
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