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T cell review

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https://www.readbyqxmd.com/read/29166752/immunotherapy-treatment-an-issue-for-metabolic-response
#1
Luca Tagliabue, Antonella Capozza, Claudio Maioli, Andrea Luciani, Anna M Ierardi, Gianpaolo Carrafiello
Since the beginning of second decade of this century, when it was introduced in many oncologic scenarios, immunotherapy has become an important tool in the management of a growing number of cancers. Engaging the host immune system in cancer therapy seems to be useful, improving not only progression free survival but also overall survival, until the achieving the goal that many advanced cancers, previously considered without effective treatment options, have now become successfully treatable. Moreover, considering the relatively recent introduction of these drugs in clinical scenarios and the continuous releasing of new drugs, large validated clinical experiences are lacking and many issues are today debated; by the way, the evaluation of the response to immune-therapy poses major concerns...
November 22, 2017: Quarterly Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29165988/bioconjugate-strategies-for-the-induction-of-antigen-specific-tolerance-in-autoimmune-diseases
#2
Chunsong Yu, Jingchao Xi, Meng Li, Myunggi An, Haipeng Liu
Antigen-specific immunotherapy (ASI) holds great promise for the treatment of autoimmune diseases. In mice, administration of major histocompatibility complex (MHC) binding synthetic peptides which modulate T cell receptor (TCR) signaling under subimmunogenic conditions induces selective tolerance without suppressing the global immune responses. However, clinical translation has yielded limited success. It has become apparent that the TCR signaling pathway via synthetic peptide antigen alone is inadequate to induce an effective tolerogenic immunity in autoimmune diseases...
November 22, 2017: Bioconjugate Chemistry
https://www.readbyqxmd.com/read/29165760/factors-responsible-for-mother-to-child-transmission-mtct-of-hiv-1-a-review
#3
J-F Liu, G Liu, Z-G Li
Many factors have been identified to influence the risk of mother to child transmission (MTCT) of HIV. Chief amongst these is high maternal VL and advanced disease. High maternal viral load (mVL), measured at delivery, has been described as the strongest risk factor for both in utero (IU) and intrapartum (IP) transmission. Similarly, CD4+ T cell count and clinical stage of infection are also the confirmed significant predictors of transmission. Correspondingly, higher mVL in the genital tract has also been independently associated with a higher risk of MTCT of HIV-1...
October 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29165070/bortezomib-in-kidney-transplant-current-use-and-perspectives
#4
Erika B Rangel, Lucio R Requião-Moura, Taina V de Sandes-Freitas, Gessika Marcelo-Gomes
BACKGROUND: Despite major advances in transplant medicine, antibody-mediated rejection (AMR) continues to have severe clinical implications and adversely affect graft survival. Therefore, the search for alternative drugs to treat AMR is widely pursued. The first-in-class proteasome inhibitor bortezomib (BZ) is a selective inhibitor of the 26S proteasome, which was initially approved for the treatment of malignant plasma cell disorders. METHODS: This review encompasses how our understanding of inhibiting proteasome pathway created the basis of BZ research and important milestones accomplished in AMR treatment in the transplant setting...
November 20, 2017: Current Drug Metabolism
https://www.readbyqxmd.com/read/29163850/chimeric-antigen-receptor-t-car-t-cell-therapy-for-solid-tumors-challenges-and-opportunities
#5
REVIEW
An-Liang Xia, Xiao-Chen Wang, Yi-Jun Lu, Xiao-Jie Lu, Beicheng Sun
Chimeric antigen receptor (CAR)-engineered T cells (CAR-T cells) have been shown to have unprecedented efficacy in B cell malignancies, most notably in B cell acute lymphoblastic leukemia (B-ALL) with up to a 90% complete remission rate using anti-CD19 CAR-T cells. However, CAR T-cell therapy for solid tumors currently is faced with numerous challenges such as physical barriers, the immunosuppressive tumor microenvironment and the specificity and safety. The clinical results in solid tumors have been much less encouraging, with multiple cases of toxicity and a lack of therapeutic response...
October 27, 2017: Oncotarget
https://www.readbyqxmd.com/read/29163534/membrane-rafts-in-t-cell-activation-a-spotlight-on-cd28-costimulation
#6
REVIEW
Sara Zumerle, Barbara Molon, Antonella Viola
Spatiotemporal compartmentalization of signaling pathways and second messengers is pivotal for cell biology and membrane rafts are, therefore, required for several lymphocyte functions. On the other hand, T cells have the specific necessity of tuning signaling amplification depending on the context in which the antigen is presented. In this review, we discuss of membrane rafts in the context of T cell signaling, focusing on CD28-mediated costimulation.
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29163528/the-role-of-transforming-growth-factor-beta-1-in-the-progression-of-hiv-aids-and-development-of-non-aids-defining-fibrotic-disorders
#7
REVIEW
Annette J Theron, Ronald Anderson, Theresa M Rossouw, Helen C Steel
Even after attainment of sustained viral suppression following implementation of highly active antiretroviral therapy, HIV-infected persons continue to experience persistent, low-grade, systemic inflammation. Among other mechanisms, this appears to result from ongoing microbial translocation from a damaged gastrointestinal tract. This HIV-related chronic inflammatory response is paralleled by counteracting, but only partially effective, biological anti-inflammatory processes. Paradoxically, however, this anti-inflammatory response not only exacerbates immunosuppression but also predisposes for development of non-AIDS-related, non-communicable disorders...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29163527/engineered-tolerance-tailoring-development-function-and-antigen-specificity-of-regulatory-t-cells
#8
REVIEW
Nicholas A J Dawson, Jens Vent-Schmidt, Megan K Levings
Regulatory T cells (Tregs) are potent suppressors of immune responses and are currently being clinically tested for their potential to stop or control undesired immune responses in autoimmunity, hematopoietic stem cell transplantation, and solid organ transplantation. Current clinical approaches aim to boost Tregs in vivo either by using Treg-promoting small molecules/proteins and/or by adoptive transfer of expanded Tregs. However, the applicability of Treg-based immunotherapies continues to be hindered by technical limitations related to cell isolation and expansion of a pure, well-characterized, and targeted Treg product...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29163518/mixed-signals-co-stimulation-in-invariant-natural-killer-t-cell-mediated-cancer-immunotherapy
#9
REVIEW
Susannah C Shissler, Michael S Lee, Tonya J Webb
Invariant natural killer T (iNKT) cells are an integral component of the immune system and play an important role in antitumor immunity. Upon activation, iNKT cells can directly kill malignant cells as well as rapidly produce cytokines that stimulate other immune cells, making them a front line defense against tumorigenesis. Unfortunately, iNKT cell number and activity are reduced in multiple cancer types. This anergy is often associated with upregulation of co-inhibitory markers such as programmed death-1...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29163507/impact-of-chronic-viral-infection-on-t-cell-dependent-humoral-immune-response
#10
REVIEW
Stéphane Rodriguez, Mikaël Roussel, Karin Tarte, Patricia Amé-Thomas
During the last decades, considerable efforts have been done to decipher mechanisms supported by microorganisms or viruses involved in the development, differentiation, and function of immune cells. Pathogens and their associated secretome as well as the continuous inflammation observed in chronic infection are shaping both innate and adaptive immunity. Secondary lymphoid organs are functional structures ensuring the mounting of adaptive immune response against microorganisms and viruses. Inside these organs, germinal centers (GCs) are the specialized sites where mature B-cell differentiation occurs leading to the release of high-affinity immunoglobulin (Ig)-secreting cells...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29163482/current-advances-in-%C3%AE-%C3%AE-t-cell-based-tumor-immunotherapy
#11
REVIEW
Elena Lo Presti, Gabriele Pizzolato, Eliana Gulotta, Gianfranco Cocorullo, Gaspare Gulotta, Francesco Dieli, Serena Meraviglia
γδ T cells are a minor population (~5%) of CD3 T cells in the peripheral blood, but abound in other anatomic sites such as the intestine or the skin. There are two major subsets of γδ T cells: those that express Vδ1 gene, paired with different Vγ elements, abound in the intestine and the skin, and recognize the major histocompatibility complex (MHC) class I-related molecules such as MHC class I-related molecule A, MHC class I-related molecule B, and UL16-binding protein expressed on many stressed and tumor cells...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29163472/the-kynurenine-pathway-as-a-novel-link-between-allergy-and-the-gut-microbiome
#12
REVIEW
Aaron P Van der Leek, Yarden Yanishevsky, Anita L Kozyrskyj
In the past few decades, the indoleamine 2,3 dioxygenase (IDO) subset of the kynurenine (KYN) pathway of tryptophan (TRP) metabolism has been the subject of much research in the area of immune tolerance. In this review, we aim to incorporate new findings on this pathway in relation to allergy and the gut microbiome, while providing a comprehensive overview of the pathway itself. Stimulated by interferon gamma, IDO acts as a tolerogenic, immunosuppressive enzyme to attenuate allergic responses by the induction of the KYN-IDO pathway, resultant depletion of TRP, and elevation in KYN metabolites...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29163470/indoleamine-2-3-dioxygenase-and-tolerance-where-are-we-now
#13
REVIEW
Andrew L Mellor, Henrique Lemos, Lei Huang
Cells expressing IDO suppress innate and adaptive immunity to promote tolerance by catabolizing the amino acid tryptophan (Trp) and other indole compounds. Interferon type I (IFN-I) and type II (IFN-II) produced at sites of inflammation or by activated immune cells are potent IDO inducers because mammalian IDO genes contain IFN response elements. Elevated IDO expression by dendritic cells (DCs) is of particular significance because IDO activity converts mature DCs into tolerogenic APCs that suppress effector T cells (Teff) and promote regulatory T cells (Tregs), thereby promoting tolerance...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29163465/b-cell-activating-factor-and-the-b-cell-compartment-in-hiv-siv-infection
#14
REVIEW
Gwenoline Borhis, Maria Trovato, Nada Chaoul, Hany M Ibrahim, Yolande Richard
With the goal to design effective HIV vaccines, intensive studies focused on broadly neutralizing antibodies, which arise in a fraction of HIV-infected people. Apart from identifying new vulnerability sites in the viral envelope proteins, these studies have shown that a fraction of these antibodies are produced by self/poly-reactive B-cells. These findings prompted us to revisit the B-cell differentiation and selection process during HIV/SIV infection and to consider B-cells as active players possibly shaping the helper T-cell program within germinal centers (GCs)...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29163380/focused-review-cytotoxic-and-antioxidant-potentials-of-mangrove-derived-streptomyces
#15
REVIEW
Hooi-Leng Ser, Loh Teng-Hern Tan, Jodi Woan-Fei Law, Kok-Gan Chan, Acharaporn Duangjai, Surasak Saokaew, Priyia Pusparajah, Nurul-Syakima Ab Mutalib, Tahir Mehmood Khan, Bey-Hing Goh, Learn-Han Lee
Human life expectancy is rapidly increasing with an associated increasing burden of chronic diseases, such as neurodegenerative diseases and cancer. However, there is limited progress in finding effective treatment for these conditions. For this reason, members of the genus Streptomyces have been explored extensively over the past decades as these filamentous bacteria are highly efficient in producing bioactive compounds with human health benefits. Being ubiquitous in nature, streptomycetes can be found in both terrestrial and marine environments...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/29160853/therapeutic-strategies-against-epstein-barr-virus-associated-cancers-using-proteasome-inhibitors
#16
REVIEW
Kwai Fung Hui, Kam Pui Tam, Alan Kwok Shing Chiang
Epstein-Barr virus (EBV) is closely associated with several lymphomas (endemic Burkitt lymphoma, Hodgkin lymphoma and nasal NK/T-cell lymphoma) and epithelial cancers (nasopharyngeal carcinoma and gastric carcinoma). To maintain its persistence in the host cells, the virus manipulates the ubiquitin-proteasome system to regulate viral lytic reactivation, modify cell cycle checkpoints, prevent apoptosis and evade immune surveillance. In this review, we aim to provide an overview of the mechanisms by which the virus manipulates the ubiquitin-proteasome system in EBV-associated lymphoid and epithelial malignancies, to evaluate the efficacy of proteasome inhibitors on the treatment of these cancers and discuss potential novel viral-targeted treatment strategies against the EBV-associated cancers...
November 21, 2017: Viruses
https://www.readbyqxmd.com/read/29160067/molecular-tension-probes-for-imaging-forces-at-the-cell-surface
#17
Yang Liu, Kornelia Galior, Victor Pui-Yan Ma, Khalid Salaita
Mechanical forces are essential for a variety of biological processes ranging from transcription and translation to cell adhesion, migration, and differentiation. Through the activation of mechanosensitive signaling pathways, cells sense and respond to physical stimuli from the surrounding environment, a process widely known as mechanotransduction. At the cell membrane, many signaling receptors, such as integrins, cadherins and T- or B-cell receptors, bind to their ligands on the surface of adjacent cells or the extracellular matrix (ECM) to mediate mechanotransduction...
November 21, 2017: Accounts of Chemical Research
https://www.readbyqxmd.com/read/29159903/soluble-mhc-molecules-in-immune-regulation-highlighting-class-ii-antigens
#18
REVIEW
Katerina Bakela, Irene Athanassakis
The involvement of Major histocompatibility complex (MHC) antigens in the development and regulation of immune response has been well defined over the years, starting from maturation, antigenic peptide loading, migration to the cell membrane for recognition by the T cell receptor and recycling for immune response cessation. During this intracellular trafficking, MHC antigens find a way to be excreted by the cells, since they can be found as soluble MHC class I (sMHCI) and class II (sMHCII) molecules in all body fluids...
November 21, 2017: Immunology
https://www.readbyqxmd.com/read/29159871/immunodeficiency-in-charge-syndrome
#19
REVIEW
Sam Mehr, Peter Hsu, Dianne Campbell
Immunodeficiency can occur in CHARGE syndrome, with immunophenotypes including reduction in T-cell counts, combined T-B cell defects rarely requiring antibiotic prophylaxis or immunoglobulin replacement, and severe combined immunodeficiency, which is fatal without immune reconstitution. However, the prevalence of immunodeficiency in CHARGE syndrome remains unclear with few prospective studies. In this review, we examine the existing literature covering immunodeficiency associated with CHARGE syndrome, compare these with immunodeficiencies reported in 22q11...
November 21, 2017: American Journal of Medical Genetics. Part C, Seminars in Medical Genetics
https://www.readbyqxmd.com/read/29159766/incidence-of-immune-related-adverse-events-and-its-association-with-treatment-outcomes-the-md-anderson-cancer-center-experience
#20
Takeo Fujii, Rivka R Colen, Mehmet Asim Bilen, Kenneth R Hess, Joud Hajjar, Maria E Suarez-Almazor, Anas Alshawa, David S Hong, Apostolia Tsimberidou, Filip Janku, Jing Gong, Bettzy Stephen, Vivek Subbiah, Sarina A Piha-Paul, Siqing Fu, Padmanee Sharma, Tito Mendoza, Anisha Patel, Selvi Thirumurthi, Ajay Sheshadri, Funda Meric-Bernstam, Aung Naing
Background Immunotherapy is emerging as the cornerstone for treatment of patients with advanced cancer, but significant toxicity (immune-related adverse events [irAEs]) associated with unbridled T cell activity remains a concern. Patients and methods A retrospective review of the electronic medical records of 290 patients with advanced cancer treated on an immunotherapy-based clinical trial in the Department of Investigational Cancer Therapeutics at The University of Texas MD Anderson Cancer Center between February 2010 and September 2015 was performed...
November 21, 2017: Investigational New Drugs
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