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https://www.readbyqxmd.com/read/29764159/emerging-role-of-immunotherapy-for-childhood-cancers
#1
Rupert Handgretinger, Patrick Schlegel
Recent developments in cell and gene therapy have a great impact on the new therapeutic approaches in pediatric cancers. Monoclonal antibodies for neuroblastoma and bispecific antibodies for leukemia have induced significant clinical responses for otherwise chemorefractory patients. Moreover, cellular therapeutic approaches including chimeric antigen receptor (CAR) T-cells as well as natural killer (NK) cells have the potential to cure patients with so far incurable malignancies and are the basis for future new therapies for pediatric cancer...
April 2018: Chinese Clinical Oncology
https://www.readbyqxmd.com/read/29609271/-killing-effect-of-robo1-targeted-chimeric-antigen-receptor-modified-nk92-cells-against-glioma-and-neuroblastoma-cells
#2
Y Qu, J Z Bi
Objective: To study the cytotoxicity of Robo1-CAR-NK92 cells against U87-MG and SH-SY5Y cells, to explore the effects of IL-15, IL-21 and dexamethasone on the proliferation, survival and cytotoxicity of Robo1-CAR-NK92 cells and to optimize the culture protocol. Methods: Robo1-CAR-NK92 cells were constructed by lentivirus transfection.The Robo1 car positive cells were sorted, expanded and detected by flow cytometry.The levels of Robo1 expression in SH-SY5Y and U87-MG cells were examined by flow cytometry.The cytotoxicity of Robo1-CAR-NK92 or NK92 cells against target cells was tested by CCK-8 and live cell imaging...
March 20, 2018: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29605760/next-generation-natural-killer-cells-for-cancer-immunotherapy-the-promise-of-genetic-engineering
#3
REVIEW
May Daher, Katayoun Rezvani
Recent advances in the field of cellular therapy have focused on autologous T cells engineered to express a chimeric antigen receptor (CAR) against tumor antigens. Remarkable responses have been observed in patients receiving autologous CD19-redirected T cells for the treatment of B-lymphoid malignancies. However, the generation of autologous products for each patient is logistically challenging and expensive. Extensive research efforts are ongoing to generate an off-the-shelf cellular product for the treatment of cancer patients...
April 2018: Current Opinion in Immunology
https://www.readbyqxmd.com/read/29507671/vegfr2-specific-fncar-effectively-redirects-the-cytotoxic-activity-of-t-cells-and-yt-nk-cells
#4
Sergey V Kulemzin, Andrey A Gorchakov, Anton N Chikaev, Valeriya V Kuznetsova, Olga Y Volkova, Daria A Matvienko, Alexey V Petukhov, Andrey Y Zaritskey, Alexandr V Taranin
T and NK cells armed with chimeric antigen receptors (CAR) are promising tools for the specific elimination of cancer cells. In most CAR designs implemented to date, the recognition of target cells is mediated by single-chain variable fragments (scFvs) derived from murine monoclonal antibodies. This format, however, has a number of limitations, including its relatively large size and potential immunogenicity in humans. In this study, we explored the feasibility of using human fibronectin type III domains (Fn3) as the antigen recognition domain in CARs...
February 6, 2018: Oncotarget
https://www.readbyqxmd.com/read/29499048/in-vitro-immunotherapy-potency-assays-using-real-time-cell-analysis
#5
Fabio Cerignoli, Yama A Abassi, Brandon J Lamarche, Garret Guenther, David Santa Ana, Diana Guimet, Wen Zhang, Jing Zhang, Biao Xi
A growing understanding of the molecular interactions between immune effector cells and target tumor cells, coupled with refined gene therapy approaches, are giving rise to novel cancer immunotherapeutics with remarkable efficacy in the clinic against both solid and liquid tumors. While immunotherapy holds tremendous promise for treatment of certain cancers, significant challenges remain in the clinical translation to many other types of cancers and also in minimizing adverse effects. Therefore, there is an urgent need for functional potency assays, in vitro and in vivo, that could model the complex interaction of immune cells with tumor cells and can be used to rapidly test the efficacy of different immunotherapy approaches, whether it is small molecule, biologics, cell therapies or combinations thereof...
2018: PloS One
https://www.readbyqxmd.com/read/29497427/chimeric-antigen-receptor-expressing-natural-killer-cells-for-the-immunotherapy-of-cancer
#6
REVIEW
Rohtesh S Mehta, Katayoun Rezvani
Adoptive cell therapy has emerged as a powerful treatment for advanced cancers resistant to conventional agents. Most notable are the remarkable responses seen in patients receiving autologous CD19-redirected chimeric antigen receptor (CAR) T cells for the treatment of B lymphoid malignancies; however, the generation of autologous products for each patient is logistically cumbersome and has restricted widespread clinical use. A banked allogeneic product has the potential to overcome these limitations, yet allogeneic T-cells (even if human leukocyte antigen-matched) carry a major risk of graft-versus-host disease (GVHD)...
2018: Frontiers in Immunology
https://www.readbyqxmd.com/read/29459477/intrinsic-functional-potential-of-nk-cell-subsets-constrains-retargeting-driven-by-chimeric-antigen-receptors
#7
Vincent Yi Sheng Oei, Marta Siernicka, Agnieszka Graczyk-Jarzynka, Hanna Julie Hoel, Weiwen Yang, Daniel Palacios, Hilde Almåsbak, Malgorzata Bajor, Dennis Clement, Ludwig Brandt, Björn Önfelt, Jodie Goodridge, Magdalena Winiarska, Radoslaw Zagozdzon, Johanna Olweus, Jon-Amund Kyte, Karl-Johan Malmberg
Natural killer (NK) cells hold potential as a source of allogeneic cytotoxic effector cells for chimeric antigen receptor (CAR)-mediated therapies. Here, we explored the feasibility of transfecting CAR-encoding mRNA into primary NK cells and investigated how the intrinsic potential of discrete NK-cell subsets affects retargeting efficiency. After screening five second- and third-generation anti-CD19 CAR constructs with different signaling domains and spacer regions, a third-generation CAR with the CH2-domain removed was selected based on its expression and functional profiles...
April 2018: Cancer Immunology Research
https://www.readbyqxmd.com/read/29399409/development-of-chimeric-antigen-receptors-targeting-t-cell-malignancies-using-two-structurally-different-anti-cd5-antigen-binding-domains-in-nk-and-crispr-edited-t-cell-lines
#8
Sunil S Raikar, Lauren C Fleischer, Robert Moot, Andrew Fedanov, Na Yoon Paik, Kristopher A Knight, Christopher B Doering, H Trent Spencer
Relapsed T-cell malignancies have poor outcomes when treated with chemotherapy, but survival after allogeneic bone marrow transplantation (BMT) approaches 50%. A limitation to BMT is the difficulty of achieving remission prior to transplant. Chimeric antigen receptor (CAR) T-cell therapy has shown successes in B-cell malignancies. This approach is difficult to adapt for the treatment of T-cell disease due to lack of a T-lymphoblast specific antigen and the fratricide of CAR T cells that occurs with T-cell antigen targeting...
2018: Oncoimmunology
https://www.readbyqxmd.com/read/29378229/reformation-in-chimeric-antigen-receptor-based-cancer-immunotherapy-redirecting-natural-killer-cell
#9
REVIEW
Chu Lin, Jun Zhang
Natural killer (NK) cells are an important subset of lymphocytes which play a critical role in host immunity against cancers. With MHC-independent recognition, short lifespan and potent cytotoxicity, NK cells make a promising candidate for chimeric antigen receptor (CAR)-engineered cancer immunotherapy. Due to innate biological properties of NK cells, CAR-NK may outperform CAR-T therapy in terms of less side effects and more universal access, which may become a great reformation in CAR-based cancer immunotherapy...
January 31, 2018: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/29364266/dextran-enhances-the-lentiviral-transduction-efficiency-of-murine-and-human-primary-nk-cells
#10
Arash Nanbakhsh, Brad Best, Matthew Riese, Sridhar Rao, Li Wang, Jeffrey Medin, Monica S Thakar, Subramaniam Malarkannan
The efficient transduction of specific genes into natural killer (NK) cells has been a major challenge. Successful transductions are critical to defining the role of the gene of interest in the development, differentiation, and function of NK cells. Recent advances related to chimeric antigen receptors (CARs) in cancer immunotherapy accentuate the need for an efficient method to deliver exogenous genes to effector lymphocytes. The efficiencies of lentiviral-mediated gene transductions into primary human or mouse NK cells remain significantly low, which is a major limiting factor...
January 15, 2018: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29348865/targeting-t-cell-malignancies-using-anti-cd4-car-nk-92-cells
#11
Kevin G Pinz, Elizabeth Yakaboski, Alexander Jares, Hua Liu, Amelia E Firor, Kevin H Chen, Masayuki Wada, Huda Salman, William Tse, Nabil Hagag, Fengshuo Lan, Elaine Lai-Han Leung, Xun Jiang, Yupo Ma
Peripheral T-cell lymphomas (PTCLs) are a group of very aggressive non-Hodgkin's lymphomas (NHLs) with poor prognoses and account for a majority of T-cell malignancies. Overall, the standard of care for patients with T-cell malignancies is poorly established, and there is an urgent clinical need for a new approach. As demonstrated in B-cell malignancies, chimeric antigen receptor (CAR) immunotherapy provides great hope as a curative treatment regimen. Because PTCLs develop from mature T-cells, these NHLs are commonly CD4+ , and CD4 is highly and uniformly expressed...
December 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/29339014/development-of-gpc3-specific-chimeric-antigen-receptor-engineered-natural-killer-cells-for-the-treatment-of-hepatocellular-carcinoma
#12
Min Yu, Hong Luo, Mingliang Fan, Xiuqi Wu, Bizhi Shi, Shengmeng Di, Ying Liu, Zeyan Pan, Hua Jiang, Zonghai Li
Chimeric antigen receptor (CAR)-modified natural killer (NK) cells represent a promising immunotherapeutic modality for cancer treatment. However, their potential utilities have not been explored in hepatocellular carcinoma (HCC). Glypian-3 (GPC3) is a rational immunotherapeutic target for HCC. In this study, we developed GPC3-specific NK cells and explored their potential in the treatment of HCC. The NK-92/9.28.z cell line was established by engineering NK-92, a highly cytotoxic NK cell line with second-generation GPC3-specific CAR...
February 7, 2018: Molecular Therapy: the Journal of the American Society of Gene Therapy
https://www.readbyqxmd.com/read/29334771/development-of-anti-human-mesothelin-targeted-chimeric-antigen-receptor-messenger-rna-transfected-peripheral-blood-lymphocytes-for-ovarian-cancer-therapy
#13
Chien-Fu Hung, Xuequn Xu, Linhong Li, Ying Ma, Qiu Jin, Angelia Viley, Cornell Allen, Pachai Natarajan, Rama Shivakumar, Madhusudan V Peshwa, Leisha A Emens
CD19-targeted chimeric antigen receptor (CAR) engineered T/natural killer (NK)-cell therapies can result in durable clinical responses in B-cell malignancies. However, CAR-based immunotherapies have been much less successful in solid cancers, in part due to "on-target off-tumor" toxicity related to expression of target tumor antigens on normal tissue. Based on preliminary observations of safety and clinical activity in proof-of-concept clinical trials, tumor antigen-specific messenger RNA (mRNA) CAR transfection into selected, activated, and expanded T/NK cells may permit prospective control of "on-target off-tumor" toxicity...
April 2, 2018: Human Gene Therapy
https://www.readbyqxmd.com/read/29320890/chimeric-antigen-receptors-in-different-cell-types-new-vehicles-join-the-race
#14
Dennis C Harrer, Jan Dörrie, Niels Schaft
Adoptive cellular therapy has evolved into a powerful force in the battle against cancer, holding promise for curative responses in patients with advanced and refractory tumors. Autologous T cells, reprogrammed to target malignant cells via the expression of a chimeric antigen receptor (CAR) represent the frontrunner in this approach. Tremendous clinical regressions have been achieved using CAR-T cells against a variety of cancers both in numerous preclinical studies and in several clinical trials, most notably against acute lymphoblastic leukemia, and resulted in a very recent United States Food and Drug Administration approval of the first CAR-T-cell therapy...
February 27, 2018: Human Gene Therapy
https://www.readbyqxmd.com/read/29316666/fusion-proteins-of-nkg2d-nkg2dl-in-cancer-immunotherapy
#15
REVIEW
Hui Ding, Xi Yang, Yanzhang Wei
NKG2D (natural killer group 2, member D) is an important activating receptor in natural killer (NK) cells and some T cells. NKG2D ligands (NKG2DLs) are specifically expressed on most tumor cells. The engagement of these ligands on tumor cells to NKG2D on NK cells will induce cell-mediated cytotoxicity and have target cells destroyed. This gives NKG2D/NKG2DLs great potential in cancer therapeutic application. The creation of NKG2D/NKG2DL-based multi-functional fusion proteins is becoming one of the most promising strategies in immunotherapy for cancer...
January 7, 2018: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29241547/car-t-cells-releasing-il-18-convert-to-t-bet-high-foxo1-low-effectors-that-exhibit-augmented-activity-against-advanced-solid-tumors
#16
Markus Chmielewski, Hinrich Abken
Adoptive therapy with chimeric antigen receptor (CAR)-redirected T cells has achieved remarkable efficacy in the treatment of hematopoietic malignancies. However, eradicating large solid tumors in advanced stages of the disease remains challenging. We explored augmentation of the anti-tumor immune reaction by establishing an acute inflammatory reaction. Systematic screening indicates that IL-18 polarizes CAR T cells toward T-bethigh FoxO1low effectors with an acute inflammatory response. CAR T cells engineered with inducible IL-18 release exhibited superior activity against large pancreatic and lung tumors that were refractory to CAR T cells without cytokines...
December 12, 2017: Cell Reports
https://www.readbyqxmd.com/read/29103317/anticancer-cellular-immunotherapies-derived-from-umbilical-cord-blood
#17
Katalin Balassa, Vanderson Rocha
The lack of highly effective drugs in many malignancies has prompted scientific interest in the development of alternative treatment strategies. Cellular immunotherapy involving the adoptive transfer of immune cells that potently recognize and eliminate malignantly transformed cells has become a promising new tool in the anticancer armory. Studies suggest that the unique biological properties of umbilical cord blood (UCB) cells could precipitate enhanced anticancer activity; hence, UCB could be an optimal source for immunotherapy with the potential to provide products with 'off-the-shelf' availability...
February 2018: Expert Opinion on Biological Therapy
https://www.readbyqxmd.com/read/29089311/slamf7-car-t-cells-eliminate-myeloma-and-confer-selective-fratricide-of-slamf7-normal-lymphocytes
#18
Tea Gogishvili, Sophia Danhof, Sabrina Prommersberger, Julian Rydzek, Martin Schreder, Christian Brede, Hermann Einsele, Michael Hudecek
SLAMF7 is under intense investigation as a target for immunotherapy in multiple myeloma. In this study, we redirected the specificity of T cells to SLAMF7 through expression of a chimeric antigen receptor (CAR) derived from the huLuc63 antibody (elotuzumab) and demonstrate that SLAMF7-CAR T cells prepared from patients and healthy donors confer potent antimyeloma reactivity. We confirmed uniform, high-level expression of SLAMF7 on malignant plasma cells in previously untreated and in relapsed/refractory (R/R) myeloma patients who had received previous treatment with proteasome inhibitors and immunomodulatory drugs...
December 28, 2017: Blood
https://www.readbyqxmd.com/read/29040754/development-of-unique-cytotoxic-chimeric-antigen-receptors-based-on-human-scfv-targeting-b7h6
#19
Casey K Hua, Albert T Gacerez, Charles L Sentman, Margaret E Ackerman
As a stress-inducible natural killer (NK) cell ligand, B7H6 plays a role in innate tumor immunosurveillance and is a fairly tumor selective marker expressed on a variety of solid and hematologic cancer cells. Here, we describe the isolation and characterization of a new family of single chain fragment variable (scFv) molecules targeting the human B7H6 ligand. Through directed evolution of a yeast surface displayed non-immune human-derived scFv library, eight candidates comprising a single family of clones differing by up to four amino acid mutations and exhibiting nM avidities for soluble B7H6-Ig were isolated...
October 1, 2017: Protein Engineering, Design & Selection: PEDS
https://www.readbyqxmd.com/read/29038795/immune-engineering-from-systems-immunology-to-engineering-immunity
#20
Ning Jiang
The smallpox vaccine represents the earliest attempt in engineering immunity. The recent success of chimeric antigen receptor T cells (CAR-T cells) in cancer once again demonstrates the clinical potential of immune engineering. Inspired by this success, diverse approaches have been used to boost various aspects of immunity: engineering dendritic cells (DCs), natural killer (NK) cells, T cells, antibodies, cytokines, small peptides, and others. With recent development of various high-throughput technologies (of which engineers, especially biomedical engineers/bioengineers contributed significantly), such as immune repertoire sequencing, and analytical methods, a systems level of understanding immunity (or the lack of it) beyond model animals has provided critical insights into the human immune system...
March 2017: Current Opinion in Biomedical Engineering
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