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https://www.readbyqxmd.com/read/29089645/identification-and-characterization-of-hla-a24-specific-xbp1-cd138-syndecan-1-and-cs1-slamf7-peptides-inducing-antigens-specific-memory-cytotoxic-t-lymphocytes-targeting-multiple-myeloma
#1
J Bae, T Hideshima, G L Zhang, J Zhou, D B Keskin, N C Munshi, K C Anderson
XBP1 (X-box binding protein 1), CD138 (Syndecan-1), and CS1 (SLAMF7) are highly expressed antigens in cancers including multiple myeloma (MM). Here we identify and characterize immunogenic HLA-A24 peptides derived from these antigens for potential vaccination therapy of HLA-A24+ patients with MM. The identified immunogenic HLA-A24-specific XBP1 unspliced (UN)185-193 (I S P W I L A V L), XBP1 spliced (SP)223-231 (V Y P E G P S S L), CD138265-273 (I F A V C L V G F) and CS1240-248 (L F V L G L F L W) peptides induced antigen-specific CTL with anti-MM activity in an HLA-A24 restricted manner...
November 1, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/29089311/slamf7-car-t-cells-eliminate-myeloma-and-confer-selective-fratricide-of-slamf7-normal-lymphocytes
#2
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. Here, 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 prior treatment with proteasome-inhibitors and immunomodulatory agents (IMiDs)...
October 31, 2017: Blood
https://www.readbyqxmd.com/read/29020082/expression-patterns-of-signaling-lymphocytic-activation-molecule-family-members-in-peripheral-blood-mononuclear-cell-subsets-in-patients-with-systemic-lupus-erythematosus
#3
Maria P Karampetsou, Denis Comte, Katalin Kis-Toth, Vasileios C Kyttaris, George C Tsokos
Genome-wide linkage analysis studies (GWAS) studies in systemic lupus erythematosus (SLE) identified the 1q23 region on human chromosome 1, containing the Signaling Lymphocytic Activation Molecule Family (SLAMF) cluster of genes, as a lupus susceptibility locus. The SLAMF molecules (SLAMF1-7) are immunoregulatory receptors expressed predominantly on hematopoietic cells. Activation of cells of the adaptive immune system is aberrant in SLE and dysregulated expression of certain SLAMF molecules has been reported...
2017: PloS One
https://www.readbyqxmd.com/read/28932638/the-anti-slamf7-antibody-elotuzumab-mediates-nk-cell-activation-through-both-cd16-dependent-and-independent-mechanisms
#4
Tatiana Pazina, Ashley M James, Alexander W MacFarlane, Natalie A Bezman, Karla A Henning, Christine Bee, Robert F Graziano, Michael D Robbins, Adam D Cohen, Kerry S Campbell
Elotuzumab is a humanized therapeutic monoclonal antibody directed to the surface glycoprotein SLAMF7 (CS1, CRACC, CD319), which is highly expressed on multiple myeloma (MM) tumor cells. Improved clinical outcomes have been observed following treatment of MM patients with elotuzumab in combination with lenalidomide or bortezomib. Previous work showed that elotuzumab stimulates NK cell-mediated antibody-dependent cellular cytotoxicity (ADCC), via Fc-domain engagement with FcγRIIIa (CD16). SLAMF7 is also expressed on NK cells, where it can transmit stimulatory signals...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28928126/chimeric-antigen-receptor-t-cell-therapies-for-multiple-myeloma
#5
Lekha Mikkilineni, James N Kochenderfer
Multiple myeloma (MM) is a nearly always incurable malignancy of plasma cells, so new approaches to treatment are needed. T-cell therapies are a promising approach for treating MM, with a mechanism of action different than those of standard MM treatments. Chimeric antigen receptors (CARs) are fusion proteins incorporating antigen-recognition domains and T-cell signaling domains. T-cells genetically engineered to express CARs can specifically recognize antigens. Success of CAR T-cells against leukemia and lymphoma has encouraged development of CAR T-cell therapies for MM...
September 19, 2017: Blood
https://www.readbyqxmd.com/read/28883263/combination-therapy-with-monoclonal-antibodies-for-treatment-of-newly-diagnosed-multiple-myeloma
#6
Noriko Nishimura, Yasuhito Terui, Kiyohiko Hatake
Monoclonal antibodies (mAbs) with new mechanisms of action are emerging as promising agents for patients with multiple myeloma (MM). Of these, anti-CD38 antibodies and anti-signaling lymphocytic activation molecule F7 (SLAMF7) antibody have demonstrated efficacy for relapsed and refractory myeloma (RRMM). Two CD38-targeting antibodies, daratumumab and isatuximab had significant activity as single agents, whereas the SLAMF7-targeting antibody, elotuzumab, did not. Patients with RRMM treated with 16 mg/kg daratumumab achieved at least PR of 36% and 29% in two distinct phase 2 studies...
2017: [Rinshō Ketsueki] the Japanese Journal of Clinical Hematology
https://www.readbyqxmd.com/read/28861320/cs1-slamf7-cd319-is-an-effective-immunotherapeutic-target-for-multiple-myeloma
#7
REVIEW
Joseph D Malaer, Porunelloor A Mathew
CS1 (also known as CD319, CRACC and SLAMF7) was identified as an NK cell receptor regulating immune functions. It is also expressed on B cells, T cells, Dendritic cells, NK-T cells, and monocytes. CS1 is overexpressed in multiple myeloma and makes it a target for immunotherapy. A humanized anti-CS1 antibody, Elotuzumab or Empliciti has shown promising results in clinical studies. This review focuses on the biology of CS1 in NK and other hematopoietic cells and multiple myeloma. Anti-CS1 mAb can activate natural cytotoxicity of NK cells as well as enhance ADCC (antibody-dependent cell-mediated cytotoxicity) and thus makes an effective target for immunotherapy of MM...
2017: American Journal of Cancer Research
https://www.readbyqxmd.com/read/28782413/coexistence-of-leishmaniasis-and-multiple-myeloma-in-the-era-of-monoclonal-antibody-anti-cd38-or-anti-slamf7-containing-triplets-one-shared-story-of-two-exceptional-cases
#8
Dimitrios C Ziogas, Evangelos Terpos, Maria Gavriatopoulou, Magdalini Migkou, Despoina Fotiou, Maria Roussou, Nikolaos Kanellias, Ioanna Tatouli, Evangelos Eleutherakis-Papaiakovou, Ioannis Panagiotidis, Ioannis Ntanasis-Stathopoulos, Efstathios Kastritis, Meletios A Dimopoulos
No abstract text is available yet for this article.
August 7, 2017: Leukemia & Lymphoma
https://www.readbyqxmd.com/read/28744161/emerging-combination-therapies-for-the-management-of-multiple-myeloma-the-role-of-elotuzumab
#9
REVIEW
Wei-Chih Chen, Abraham S Kanate, Michael Craig, William P Petros, Lori A Hazlehurst
Treatment options for patients with multiple myeloma (MM) have increased during the past decade. Despite the significant advances, challenges remain on which combination strategies will provide the optimal response for any given patient. Defining optimal combination strategies and corresponding companion diagnostics, that will guide clinical decisions are required to target relapsed or refractory multiple myeloma (RRMM) in order to improve disease progression, survival and quality of life for patients with MM...
2017: Cancer Management and Research
https://www.readbyqxmd.com/read/28734795/monoclonal-antibodies-in-multiple-myeloma-a-new-wave-of-the-future
#10
REVIEW
Daniel W Sherbenou, Tomer M Mark, Peter Forsberg
In 2015, 2 monoclonal antibodies were approved for the treatment of relapsed or refractory multiple myeloma (RRMM), elotuzumab and daratumumab. Elotuzumab is a monoclonal IgG-κ antibody directed against SLAMF7 (signaling lymphocytic activation molecule F7), a cell surface receptor involved in natural killer cell activation. Daratumumab is a monoclonal IgG-κ antibody that binds to CD38, a transmembrane protein found on the surface of myeloma cells and responsible for cellular adhesion and ectoenzymatic activity...
June 27, 2017: Clinical Lymphoma, Myeloma & Leukemia
https://www.readbyqxmd.com/read/28678593/neighborhood-characteristics-influence-dna-methylation-of-genes-involved-in-stress-response-and-inflammation-the-multi-ethnic-study-of-atherosclerosis
#11
Jennifer A Smith, Wei Zhao, Xu Wang, Scott M Ratliff, Bhramar Mukherjee, Sharon L R Kardia, Yongmei Liu, Ava V Diez Roux, Belinda L Needham
Living in a disadvantaged neighborhood is associated with poor health outcomes even after accounting for individual-level socioeconomic factors. The chronic stress of unfavorable neighborhood conditions may lead to dysregulation of the stress reactivity and inflammatory pathways, potentially mediated through epigenetic mechanisms such as DNA methylation. We used multi-level models to examine the relationship between 2 neighborhood conditions and methylation levels of 18 genes related to stress reactivity and inflammation in purified monocytes from 1,226 participants of the Multi-Ethnic Study of Atherosclerosis (MESA), a population-based sample of US adults...
August 2017: Epigenetics: Official Journal of the DNA Methylation Society
https://www.readbyqxmd.com/read/28561703/hematologic-malignancies-plasma-cell-disorders
#12
Madhav V Dhodapkar, Ivan Borrello, Adam D Cohen, Edward A Stadtmauer
Multiple myeloma (MM) is a plasma cell malignancy characterized by the growth of tumor cells in the bone marrow. Properties of the tumor microenvironment provide both potential tumor-promoting and tumor-restricting properties. Targeting underlying immune triggers for evolution of tumors as well as direct attack of malignant plasma cells is an emerging focus of therapy for MM. The monoclonal antibodies daratumumab and elotuzumab, which target the plasma cell surface proteins CD38 and SLAMF7/CS1, respectively, particularly when used in combination with immunomodulatory agents and proteasome inhibitors, have resulted in high response rates and improved survival for patients with relapsed and refractory MM...
2017: American Society of Clinical Oncology Educational Book
https://www.readbyqxmd.com/read/28455393/sirp%C3%AE-cd47-blockade-mediated-tumor-cell-phagocytosis-requires-slamf7
#13
(no author information available yet)
SLAMF7 expression is required for macrophage-mediated phagocytosis of hematopoietic tumor cells.
June 2017: Cancer Discovery
https://www.readbyqxmd.com/read/28424516/slamf7-is-critical-for-phagocytosis-of-haematopoietic-tumour-cells-via-mac-1-integrin
#14
Jun Chen, Ming-Chao Zhong, Huaijian Guo, Dominique Davidson, Sabrin Mishel, Yan Lu, Inmoo Rhee, Luis-Alberto Pérez-Quintero, Shaohua Zhang, Mario-Ernesto Cruz-Munoz, Ning Wu, Donald C Vinh, Meenal Sinha, Virginie Calderon, Clifford A Lowell, Jayne S Danska, André Veillette
Cancer cells elude anti-tumour immunity through multiple mechanisms, including upregulated expression of ligands for inhibitory immune checkpoint receptors. Phagocytosis by macrophages plays a critical role in cancer control. Therapeutic blockade of signal regulatory protein (SIRP)-α, an inhibitory receptor on macrophages, or of its ligand CD47 expressed on tumour cells, improves tumour cell elimination in vitro and in vivo, suggesting that blockade of the SIRPα-CD47 checkpoint could be useful in treating human cancer...
April 27, 2017: Nature
https://www.readbyqxmd.com/read/28387859/altered-expression-of-signalling-lymphocyte-activation-molecule-receptors-in-t-cells-from-lupus-nephritis-patients-a-potential-biomarker-of-disease-activity
#15
COMPARATIVE STUDY
Victoria Stratigou, Anne F Doyle, Francesco Carlucci, Lauren Stephens, Valentina Foschi, Marco Castelli, Nicola McKenna, H Terence Cook, Liz Lightstone, Thomas D Cairns, Matthew C Pickering, Marina Botto
Objectives: The aim was to investigate whether the signalling lymphocyte activation molecule (SLAM) signalling pathways contribute to LN and whether SLAM receptors could be valuable biomarkers of disease activity. Methods: Peripheral blood mononuclear cells from 30National Research Ethics Service SLE patients with biopsy-proven LN were analysed by flow cytometry. Clinical measures of disease activity were assessed. The expression of the SLAM family receptors on T-cell subpopulations [CD4, CD8 and double negative (DN) T cells] was measured and compared between lupus patients with active renal disease and those in remission...
July 1, 2017: Rheumatology
https://www.readbyqxmd.com/read/28386106/myeloproliferative-leukemia-protein-activation-directly-induces-fibrocyte-differentiation-to-cause-myelofibrosis
#16
T Maekawa, Y Osawa, T Izumi, S Nagao, K Takano, Y Okada, N Tachi, M Teramoto, T Kawamura, T Horiuchi, R Saga, S Kato, T Yamamura, J Watanabe, A Kobayashi, S Kobayashi, K Sato, M Hashimoto, S Suzu, F Kimura
Myelofibrosis (MF) may be caused by various pathogenic mechanisms such as elevation in circulating cytokine levels, cellular interactions and genetic mutations. However, the underlying mechanism of MF still remains unknown. Recent studies have revealed that fibrocytes, the spindle-shaped fibroblast-like hematopoietic cells, and the thrombopoietin (TPO)/myeloproliferative leukemia protein (MPL; TPO receptor) signaling pathway play a certain role in the development of MF. In the present study, we aimed to investigate the relationship between fibrocytes and MPL activation...
April 25, 2017: Leukemia: Official Journal of the Leukemia Society of America, Leukemia Research Fund, U.K
https://www.readbyqxmd.com/read/28356715/clinical-potential-of-slamf7-antibodies-focus-on-elotuzumab-in-multiple-myeloma
#17
REVIEW
Reed Friend, Manisha Bhutani, Peter M Voorhees, Saad Z Usmani
Elotuzumab is one of the first monoclonal antibodies to be approved for the treatment of multiple myeloma. It is a humanized immunoglobulin G kappa (IgGκ) antibody that targets signaling lymphocytic activation molecule family member 7 (SLAMF7), a surface marker that is highly expressed on normal and malignant plasma cells. This review summarizes the preclinical and clinical data that led to the approval of elotuzumab, along with a discussion on the ongoing and future clinical investigations.
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28259300/immunotherapy-for-the-treatment-of-multiple-myeloma
#18
REVIEW
Sung-Hoon Jung, Hyun-Ju Lee, Manh-Cuong Vo, Hyeoung-Joon Kim, Je-Jung Lee
Immunotherapy has recently emerged as a promising treatment for multiple myeloma (MM). There are now several monoclonal antibodies that target specific surface antigens on myeloma cells or the checkpoints of immune and myeloma cells. Elotuzumab (targeting SLAMF7), daratumumab (targeting CD38), and pembrolizumab (targeting PD-1) have shown clinical activity in clinical studies with relapsed/refractory MM. Dendritic cell vaccination is a safe strategy that has shown some efficacy in a subset of myeloma patients and may become a crucial part of MM treatment when combined with immunomodulatory drugs or immune check-point blockade...
March 2017: Critical Reviews in Oncology/hematology
https://www.readbyqxmd.com/read/28213943/a-phase-2-safety-study-of-accelerated-elotuzumab-infusion-over-less-than-1-h-in-combination-with-lenalidomide-and-dexamethasone-in-patients-with-multiple-myeloma
#19
James Berenson, Robert Manges, Suprith Badarinath, Alan Cartmell, Kristi McIntyre, Roger Lyons, Wael Harb, Hesham Mohamed, Ali Nourbakhsh, Robert Rifkin
Elotuzumab, an immunostimulatory SLAMF7-targeting monoclonal antibody, induces myeloma cell death with minimal effects on normal tissue. In a previous phase 3 study in patients with relapsed/refractory multiple myeloma (RRMM), elotuzumab (10 mg/kg, ∼3-h infusion), combined with lenalidomide and dexamethasone, demonstrated durable efficacy and acceptable safety; 10% (33/321) of patients had infusion reactions (IRs; Grade 1/2: 29; Grade 3: 4). This phase 2 study (NCT02159365) investigated an accelerated infusion schedule in 70 patients with newly diagnosed multiple myeloma or RRMM...
May 2017: American Journal of Hematology
https://www.readbyqxmd.com/read/28211524/epigenetic-and-genetic-dissections-of-uv-induced-global-gene-dysregulation-in-skin-cells-through-multi-omics-analyses
#20
Yao Shen, Milda Stanislauskas, Gen Li, Deyou Zheng, Liang Liu
To elucidate the complex molecular mechanisms underlying the adverse effects UV radiation (UVR) on skin homeostasis, we performed multi-omics studies to characterize UV-induced genetic and epigenetic changes. Human keratinocytes from a single donor treated with or without UVR were analyzed by RNA-seq, exome-seq, and H3K27ac ChIP-seq at 4 h and 72 h following UVR. Compared to the relatively moderate mutagenic effects of UVR, acute UV exposure induced substantial epigenomic and transcriptomic alterations, illuminating a previously underappreciated role of epigenomic and transcriptomic instability in skin pathogenesis...
February 17, 2017: Scientific Reports
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