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https://www.readbyqxmd.com/read/28106467/follicular-lymphoma-a-b-cell-malignancy-addicted-to-epigenetic-mutations
#1
Koorosh Korfi, Sara Ali, James A Heward, Jude Fitzgibbon
While follicular lymphoma (FL) is exquisitely responsive to immuno-chemotherapy, many patients follow a relapsing remitting clinical course driven in part by a common precursor cell (CPC) population. Advances in next generation sequencing have provided valuable insights into the genetic landscape of FL and its clonal evolution in response to therapy, implicating perturbations of epigenetic regulators as a hallmark of the disease. Recurrent mutations of histone modifiers KMT2D, CREBBP, EP300, EZH2, ARIDIA, and linker histones are likely early events arising in the CPC pool, rendering epigenetic based therapies conceptually attractive for treatment of indolent and transformed FL...
January 20, 2017: Epigenetics: Official Journal of the DNA Methylation Society
https://www.readbyqxmd.com/read/28090796/impact-of-c-rel-inhibition-of-cord-blood-derived-b-t-and-nk-cells
#2
Shirin Fallahi, Seyede Momeneh Mohammadi, Hamid Tayefi Nasrabadi, Alireza Alihemmati, Naser Samadi, Sanaz Gholami, Dariush Shanehbandi, Hojjatollah Nozad Charoudeh
The c-Rel transcription factor is a unique member of the nuclear factor (NF)-κB family that has a role in curtailing the proliferation, differentiation, cytokine production, and overall activity of B- and T-cells. In addition, c-Rel is a key regulator of apoptosis in that it influences the expression of anti-apoptotic genes such as Bcl-2 and Bcl-xL; conversely, inhibition of c-Rel increases cell apoptosis. To better understand the relationship between c-Rel expression and effects on B- and T-cell expansion, the current study evaluated c-Rel expression in cord blood mononuclear cells...
January 16, 2017: Journal of Immunotoxicology
https://www.readbyqxmd.com/read/28090795/isolation-and-characterization-of-anti-c-met-single-chain-fragment-variable-scfv-antibodies
#3
Elmira Safaie Qamsari, Zahra Sharifzadeh, Salman Bagheri, Farhad Riazi-Rad, Vahid Younesi, Mohsen Abolhassani, Sepideh Safaei Ghaderi, Behzad Baradaran, Mohammad Hossein Somi, Mehdi Yousefi
The receptor tyrosine kinase (RTK) Met is the cell surface receptor for hepatocyte growth factor (HGF) involved in invasive growth programs during embryogenesis and tumorgenesis. There is compelling evidence suggesting important roles for c-Met in colorectal cancer proliferation, migration, invasion, angiogenesis, and survival. Hence, a molecular inhibitor of an extracellular domain of c-Met receptor that blocks c-Met-cell surface interactions could be of great thera-peutic importance. In an attempt to develop molecular inhibitors of c-Met, single chain variable fragment (scFv) phage display libraries Tomlinson I + J against a specific synthetic oligopeptide from the extracellular domain of c-Met receptor were screened; selected scFv were then characterized using various immune techniques...
January 16, 2017: Journal of Immunotoxicology
https://www.readbyqxmd.com/read/28067179/cd20-based-immunotherapy-of-b-cell-derived-hematologic-malignancies
#4
Dariush Shanehbandi, Jafar Majidi, Tohid Kazemi, Behzad Baradaran, Leili Aghebati-Maleki
CD20 is a surface antigen which is expressed at certain stages of B-cell differentiation. Targeting the CD20-positive B-cells with therapeutic monoclonal antibodies (MAbs) has been an effectual strategy in the treatment of hematologic malignancies such as non-Hodgkin's lymphoma (NHL) and chronic lymphocytic leukemia (CLL). Initial success with Rituximab (RTX) has encouraged the creation and development of more effective CD20 based therapeutics. However, treatment with conventional MAbs has not been adequate to overcome the problems such as refractory/relapsed disease...
January 9, 2017: Current Cancer Drug Targets
https://www.readbyqxmd.com/read/28064242/cyclin-dependent-kinase-5-activity-is-required-for-allogeneic-t-cell-responses-after-hematopoietic-cell-transplantation-in-mice
#5
David Askew, Tej Pareek, Saada Eid, Sudipto Ganguly, Megan Tyler, Alex Y Huang, John J Letterio, Kenneth R Cooke
Molecular intermediates in T cell activation pathways are crucial targets for the therapy and prevention of graft-versus-host disease (GVHD) following allogeneic hematopoietic cell transplantation (HCT). We recently identified an essential role for cyclin dependent kinase 5 (Cdk5) in T cell activation and effector function, but the contribution of Cdk5 activity to the development of GVHD has not been explored. Using an established, pre-clinical, murine, GVHD model we reveal that Cdk5 activity is increased in key target organs early after allogeneic HCT...
November 14, 2016: Blood
https://www.readbyqxmd.com/read/28060891/performance-of-89zr-labeled-rituximab-pet-as-an-imaging-biomarker-to-assess-cd20-targeting-a-pilot-study-in-patients-with-relapsed-refractory-diffuse-large-b-cell-lymphoma
#6
Yvonne W S Jauw, Josée M Zijlstra, Daphne de Jong, Danielle J Vugts, Sonja Zweegman, Otto S Hoekstra, Guus A M S van Dongen, Marc C Huisman
PURPOSE: Treatment of patients with diffuse large B cell lymphoma (DLBCL) includes rituximab, an anti-CD20 monoclonal antibody (mAb). Insufficient tumor targeting might cause therapy failure. Tumor uptake of 89Zirconium (89Zr)-mAb is a potential imaging biomarker for tumor targeting, since it depends on target antigen expression and accessibility. The aim of this pilot study was to describe the performance of 89Zr-labeled-rituximab-PET to assess CD20 targeting in patients with relapsed/refractory DLBCL...
2017: PloS One
https://www.readbyqxmd.com/read/28054442/markers-and-function-of-human-nk-cells-in-normal-and-pathological-conditions
#7
REVIEW
Genny Del Zotto, Emanuela Marcenaro, Paola Vacca, Simona Sivori, Daniela Pende, Mariella Della Chiesa, Francesca Moretta, Tiziano Ingegnere, Maria Cristina Mingari, Alessandro Moretta, Lorenzo Moretta
Natural killer (NK) cells, the most important effectors of the Innate Lymphoid Cells (ILCs), play a fundamental role in tumor immune-surveillance, defense against viruses and, in general, in innate immune responses. NK cell activation is mediated by several activating receptors and co-receptors able to recognize ligands on virus-infected or tumor cells. To prevent healthy cells from auto-aggression, NK cells are provided with strong inhibitory receptors (KIRs and NKG2A) which recognize HLA class I molecules on target cells and, sensing their level of expression, allow killing of targets underexpressing HLA-class I...
January 5, 2017: Cytometry. Part B, Clinical Cytometry
https://www.readbyqxmd.com/read/28050421/the-effect-of-folic-acid-supplementation-on-hyperhomocysteinemia-and-pulmonary-function-parameters-in-chronic-obstructive-pulmonary-disease-a-pilot-study
#8
Naushad Ahmad Khan, Harish Saini, Govind Mawari, Suman Kumar, Harmanjit Singh Hira, Mradul Kumar Daga
INTRODUCTION: Preliminary studies have established the elevated plasma total Homocysteine (tHcy) levels as a risk factor for Chronic Obstructive Pulmonary Disease (COPD). However, studies describing plasma tHcy levels and their relationship to folic acid supplementation and Forced Expiratory Volume in 1 Second (FEV1) status in COPD patients are still lacking. AIM: We investigated the role of hyperhomocysteinemia in COPD and then prospectively examined the relationship between plasma tHcy concentration and effect of folic acid supplementation on FEV1 status in COPD patients...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28050367/evaluation-of-baseline-cd4-t-cell-counts-and-art-requirement-in-newly-diagnosed-hiv-seropositive-individuals-in-a-tertiary-care-hospital-of-northern-india
#9
Sonali Bhattar, Bhanu Mehra, Preena Bhalla, Deepti Rawat
INTRODUCTION: Antiretroviral Therapy (ART) has changed the outlook of Human Immune-deficiency Virus (HIV)/Acquired Immuno Deficiency Syndrome (AIDS) patients worldwide. AIM: To analyse the trends in baseline CD4+ T cell counts and ART requirements in newly diagnosed HIV seropositive individuals in a Tertiary care hospital of Northern India. MATERIALS AND METHODS: Out of 1263 HIV seropositive clients identified from January 2012 to June 2014, the baseline CD4+ T cell counts of only those 470 clients were analysed, who registered at the linked ART centre...
November 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28045024/therapeutic-microparticles-functionalized-with-biomimetic-cardiac-stem-cell-membranes-and-secretome
#10
Junnan Tang, Deliang Shen, Thomas George Caranasos, Zegen Wang, Adam C Vandergriff, Tyler A Allen, Michael Taylor Hensley, Phuong-Uyen Dinh, Jhon Cores, Tao-Sheng Li, Jinying Zhang, Quancheng Kan, Ke Cheng
Stem cell therapy represents a promising strategy in regenerative medicine. However, cells need to be carefully preserved and processed before usage. In addition, cell transplantation carries immunogenicity and/or tumourigenicity risks. Mounting lines of evidence indicate that stem cells exert their beneficial effects mainly through secretion (of regenerative factors) and membrane-based cell-cell interaction with the injured cells. Here, we fabricate a synthetic cell-mimicking microparticle (CMMP) that recapitulates stem cell functions in tissue repair...
January 3, 2017: Nature Communications
https://www.readbyqxmd.com/read/28043634/mycobacterial-excretory-secretory-31-protein-with-serine-protease-and-lipase-activities-an-immunogen-and-drug-target-against-tuberculosis-infection
#11
Bhaskar C Harinath
OBJECTIVE/BACKGROUND: Tuberculosis (TB) has been declared as a global emergency by the World Health Organization in 1993 and still remains one of the world's biggest threats. Worldwide, 9.6 million people have been estimated to have fallen ill with TB in 2014: 5.4 million men, 3.2 million women, and 1.0 million children. To reduce this burden, detection and treatment gaps must be addressed and new tools developed (Global TB report 2015). METHODS: Seroreactivity of the purified excretory secretory (ES) antigens ES-31, ES-43, ES-41, and ES-6 have been assessed in pulmonary TB (fresh, relapse, chronic, and latent), extrapulmonary TB, and in human immunodeficiency virus-TB coinfection...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28039041/spinal-activation-of-alpha7-nicotinic-acetylcholine-receptor-attenuates-posttraumatic-stress-disorder-related-chronic-pain-via-suppression-of-glial-activation
#12
Rao Sun, Wei Zhang, Jinhua Bo, Zuoxia Zhang, Yishan Lei, Wenwen Huo, Yue Liu, Zhengliang Ma, Xiaoping Gu
The high prevalence of chronic pain in posttraumatic stress disorder (PTSD) individuals has been widely reported by clinical studies, which emphasized an urgent need to uncover the underlying mechanisms and identify potential therapeutic targets. Recent studies suggested that targeting activated glia and their pro-inflammatory products may provide a novel and effective therapy for the stress-related pain. In this study, we investigated whether activation of alpha-7 nicotinic acetylcholine receptor (α7 nAChR), a novel anti-inflammatory target, could attenuate PTSD-related chronic pain...
December 28, 2016: Neuroscience
https://www.readbyqxmd.com/read/28036044/immuno-pet-for-clinical-theranostic-approaches
#13
REVIEW
Clément Bailly, Pierre-François Cléry, Alain Faivre-Chauvet, Mickael Bourgeois, François Guérard, Ferid Haddad, Jacques Barbet, Michel Chérel, Françoise Kraeber-Bodéré, Thomas Carlier, Caroline Bodet-Milin
Recent advances in molecular characterization of tumors have allowed identification of new molecular targets on tumor cells or biomarkers. In medical practice, the identification of these biomarkers slowly but surely becomes a prerequisite before any treatment decision, leading to the concept of personalized medicine. Immuno-positron emission tomography (PET) fits perfectly with this approach. Indeed, monoclonal antibodies (mAbs) labelled with radionuclides represent promising probes for theranostic approaches, offering a non-invasive solution to assess in vivo target expression and distribution...
December 28, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28030992/macrolides-a-promising-pharmacologic-therapy-for-chronic-obstructive-pulmonary-disease
#14
Shilin Qiu, Xiaoning Zhong
Chronic inflammation plays a central role in the pathogenesis of chronic obstructive pulmonary disease (COPD). However, there are no effective anti-inflammatory pharmacologic therapies available for COPD so far. Recent evidence suggests that an immunologic mechanism has a role in the pathogenesis of COPD. Macrolides possess anti-inflammatory and immune-modulating effects may be helpful in the treatment of COPD. Several clinical studies have shown that long-term use of macrolides reduces the frequency of COPD exacerbations...
December 1, 2016: Therapeutic Advances in Respiratory Disease
https://www.readbyqxmd.com/read/28026738/-infectious-inflammation-of-pubic-symphysis-symphysitis-pubis-purulenta-five-case-reports-and-literature-view
#15
F Fridrich, V Báča, V Džupa
Purulent inflammation of the pubic symphysis is a rare condition involving the symphysis and parasymphyseal parts of the pubic bones. It is usually found in immuno-compromised patients and its most frequent cause is Staphylococcus aureus. Conservative treatment is based on long-term administration of antibiotics and has been efficient, as reported, in about 50% of the patients. The authors treated five patients with a late diagnosis of purulent infection of the pubic symphysis in whom the antibiotic therapy had to be completed by surgical intervention...
2016: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28017828/effect-of-dezocine-on-il-12-and-il-10-secretion-and-lymphocyte-activation-by-culturing-dendritic-cells-from-human-umbilical-cord-blood
#16
Chang Feng, Man Feng, Ran Jiao, Dongyi Liu, Yanwu Jin, Xin Zhao, Ruixue Xiao
Dezocine has been generally utilized for pain therapy and auxiliary anesthesia. Although it has some advantages on the prevention of some anesthesia related complications, its effect on immune responses remains unclear. Our study investigated the effects of Dezocine on IL-10 and IL-12 secretion and lymphocytes activation by culturing dendritic cells (DCs), and revealed the underlying mechanism. Mononuclear cells were divided into negative control group (GN), positive control group (GP), experimental group (GD; GD5, D7, D9)...
December 22, 2016: European Journal of Pharmacology
https://www.readbyqxmd.com/read/28006927/the-safety-of-therapeutic-monoclonal-antibodies-implications-for-cancer-therapy-including-immuno-checkpoint-inhibitors
#17
R Demlova, D Valík, R Obermannova, L ZdraŽilová-Dubská
Monoclonal antibody-based treatment of cancer has been established as one of the most successful therapeutic strategies for both hematologic malignancies and solid tumors. In addition to targeting cancer antigens antibodies can also modulate immunological pathways that are critical to immune surveillance. Antibody therapy directed against several negative immunologic regulators (checkpoints) is demonstrating significant success in the past few years. Immune checkpoint inhibitors, ipilimumab, pembrolizumab and nivolumab, have shown significant clinical benefit in several malignancies and are already approved for advanced melanoma and squamous NSCLC...
December 21, 2016: Physiological Research
https://www.readbyqxmd.com/read/28000758/chronic-hepatitis-c-infection-induced-liver-fibrogenesis-is-associated-with-m2-macrophage-activation
#18
Moses T Bility, Kouki Nio, Feng Li, David R McGivern, Stanley M Lemon, Eoin R Feeney, Raymond T Chung, Lishan Su
The immuno-pathogenic mechanisms of chronic hepatitis C virus (HCV) infection remain to be elucidated and pose a major hurdle in treating or preventing chronic HCV-induced advanced liver diseases such as cirrhosis. Macrophages are a major component of the inflammatory milieu in chronic HCV-induced liver disease, and are generally derived from circulating inflammatory monocytes; however very little is known about their role in liver diseases. To investigate the activation and role of macrophages in chronic HCV-induced liver fibrosis, we utilized a recently developed humanized mouse model with autologous human immune and liver cells, human liver and blood samples and cell culture models of monocyte/macrophage and/or hepatic stellate cell activation...
December 21, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27999293/antimutagenic-effects-of-selenium-enriched-polysaccharides-from-pyracantha-fortuneana-through-suppression-of-cytochrome-p450-1a-subfamily-in-the-mouse-liver
#19
Fan Peng, Xin Guo, Zhihong Li, Changzheng Li, Changdong Wang, Weiran Lv, Junjie Wang, Fangxiang Xiao, Mohammad Amjad Kamal, Chengfu Yuan
Both selenium (Se) and polysaccharides from Pyracantha fortuneana (Maxim.) Li (PFPs) (P. fortuneana) have been reported to possess antioxidative and immuno-protective activities. Whether or not Se-containing polysaccharides (Se-PFPs) have synergistic effect of Se and polysaccharides on enhancing the antioxidant and immune activities remains to be determined. We previously reported that polysaccharides isolated from Se-enriched P. fortuneana (Se-PFPs) possessed hepatoprotective effects. However, it is not clear whether or not they have anti-mutagenic effects...
December 16, 2016: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/27999013/pharmacological-inhibition-of-p110%C3%AE-subunit-of-pi3k-confers-protection-against-experimental-leishmaniasis
#20
Forough Khadem, Ping Jia, Zhirong Mou, Aida Feiz Barazandeh, Dong Liu, Yoav Keynan, Jude E Uzonna
OBJECTIVES: This study aimed to evaluate the immuno-prophylactic and -therapeutic effect of p110δ-specific pharmacological inhibitors (CAL-101 and IC87114), either alone or in combination with amphotericin B, against experimental cutaneous leishmaniasis (CL) and visceral leishmaniasis (VL). METHODS: Female BALB/c mice were infected intravenously with Leishmania donovani or subcutaneously with Leishmania major Prophylactic treatment was initiated 24 h prior to infection, whereas therapeutic treatments with or without amphotericin B were initiated either 1 week or 2 weeks post-infection...
December 20, 2016: Journal of Antimicrobial Chemotherapy
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