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Frontiers in Immunology

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https://www.readbyqxmd.com/read/28428790/nanoparticle-interactions-with-the-immune-system-clinical-implications-for-liposome-based-cancer-chemotherapy
#1
Ninh M La-Beck, Alberto A Gabizon
The development of stable and long-circulating liposomes provides protection of the drug cargo from degradation and increases tumor drug delivery, leading to the design of liposome formulations with great potential in cancer therapy. However, despite the sound pharmacologic basis, many liposomal as well as other nanoparticle-based drug formulations have failed to meet regulatory criteria for approval. The question that arises is whether we have missed key liposome-host interactions that can account for the gap between the major pharmacologic advantages in preclinical studies and the modest impact of the clinical effects in humans...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28428789/il-10-producing-b-cells-regulate-t-helper-cell-immune-responses-during-1-3-%C3%AE-glucan-induced-lung-inflammation
#2
Fangwei Liu, Xiaowei Lu, Wujing Dai, Yiping Lu, Chao Li, Sitong Du, Ying Chen, Dong Weng, Jie Chen
With the rapid development of industry and farm, fungi contamination widely exists in occupational environment. Inhalation of fungi-contaminated organic dust results in hypersensitivity pneumonitis. 1,3-β-Glucan is a major cell wall component of fungus and is considered as a biomarker of fungi exposure. Current studies showed that 1,3-β-glucan exposure induced lung inflammation, which involved uncontrolled T helper (Th) cell immune responses, such as Th1, Th2, Th17, and regulatory T cell (Treg). A recently identified IL-10-producing B cells (B10) was reported in regulating immune homeostasis...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28428788/the-protective-role-of-type-i-interferons-in-the-gastrointestinal-tract
#3
REVIEW
Kevin P Kotredes, Brianna Thomas, Ana M Gamero
The immune system of the gastrointestinal (GI) tract manages the significant task of recognizing and eliminating pathogens while maintaining tolerance of commensal bacteria. Dysregulation of this delicate balance can be detrimental, resulting in severe inflammation, intestinal injury, and cancer. Therefore, mechanisms to relay important signals regulating cell growth and immune reactivity must be in place to support GI homeostasis. Type I interferons (IFN-I) are a family of pleiotropic cytokines, which exert a wide range of biological effects including promotion of both pro- and anti-inflammatory activities...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28428787/a-possible-role-for-idiotype-anti-idiotype-b-t-cell-interactions-in-maintaining-immune-memory
#4
Victor I Seledtsov, Galina V Seledtsova
Variable regions of both B-cell receptors (BCRs) and T-cell receptors (TCRs) are completely formed in the postnatal period, and, consequently, no innate immune tolerance against these structures exists in adulthood. Indeed, antibodies (Abs) specific to TCRs have been found in both animals and humans. These facts clearly indicate the existence of B cells able to directly interact with T cells through binding of BCRs to TCRs without implicating major histocompatibility complex molecules. A novel paradigm is proposed in that the immune memory is based on idiotype/anti-idiotype interactions occurring between BCRs and TCRs following clearance of the antigen that elicited immune responses...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28428786/challenge-of-humans-with-wild-type-salmonella-enterica-serovar-typhi-elicits-changes-in-the-activation-and-homing-characteristics-of-mucosal-associated-invariant-t-cells
#5
Rosângela Salerno-Goncalves, David Luo, Stephanie Fresnay, Laurence Magder, Thomas C Darton, Claire Jones, Claire S Waddington, Christoph J Blohmke, Brian Angus, Myron M Levine, Andrew J Pollard, Marcelo B Sztein
Gastrointestinal infections by Salmonella enterica serovar Typhi (S. Typhi) are rare in industrialized countries. However, they remain a major public health problem in the developing world with an estimated 26.9 million new cases annually and significant mortality when untreated. Recently, we provided the first direct evidence that CD8(+) MAIT cells are activated and have the potential to kill cells exposed to S. Typhi, and that these responses are dependent on bacterial load. However, MAIT cell kinetics and function during bacterial infections in humans remain largely unknown...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28428785/interferon-gamma-induces-changes-in-natural-killer-nk-cell-ligand-expression-and-alters-nk-cell-mediated-lysis-of-pediatric-cancer-cell-lines
#6
Arianexys Aquino-López, Vladimir V Senyukov, Zlatko Vlasic, Eugenie S Kleinerman, Dean A Lee
Natural killer (NK) cells have therapeutic potential for cancer due to their capacity for targeting tumor cells without prior sensitization. Our laboratory has developed an NK cell expansion protocol that generates large quantities of NK cells for therapeutic infusion that secret 20 times the amount of interferon gamma (IFNγ) than resting NK cells. IFNγ can upregulate major histocompatibility complex (MHC)-class I, an inhibitory ligand for NK cells, but can also upregulate intercellular adhesion molecule 1 (ICAM-1) which promotes NK:target cell interaction for an efficient lysis...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28428784/the-roles-of-mast-cells-in-parasitic-protozoan-infections
#7
REVIEW
Fangli Lu, Shiguang Huang
Protozoan parasites such as Plasmodium spp., Leishmania spp., Trypanosoma spp., and Toxoplasma gondii are major causes of parasitic diseases in both humans and animals. The immune system plays a critical role against protozoa, but their immune mechanism remains poorly understood. This highlights the need to investigate the function of immune cells involved in the process of parasite infections and the responses of host immune system to parasite infections. Mast cells (MCs) are known to be central players in allergy and anaphylaxis, and it has been demonstrated that MCs have crucial roles in host defense against a number of different pathogens, including parasites...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28424703/immune-responses-to-bacillus-calmette-gu%C3%A3-rin-vaccination-why-do-they-fail-to-protect-against-mycobacterium-tuberculosis
#8
REVIEW
Juan I Moliva, Joanne Turner, Jordi B Torrelles
Mycobacterium tuberculosis (M.tb), the causative agent of tuberculosis (TB), is the current leading cause of death due to a single infectious organism. Although curable, the broad emergence of multi-, extensive-, extreme-, and total-drug resistant strains of M.tb has hindered eradication efforts of this pathogen. Furthermore, computational models predict a quarter of the world's population is infected with M.tb in a latent state, effectively serving as the largest reservoir for any human pathogen with the ability to cause significant morbidity and mortality...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28424702/dual-role-of-fas-fasl-mediated-signal-in-peripheral-immune-tolerance
#9
REVIEW
Akiko Yamada, Rieko Arakaki, Masako Saito, Yasusei Kudo, Naozumi Ishimaru
Fas-mediated apoptosis contributes to physiological and pathological cellular processes, such as differentiation and survival. In particular, the roles of Fas in immune cells are complex and critical for the maintenance of immune tolerance. The precise pathways and unique functions associated with Fas/FasL-mediated signaling in the immune system are known. The dual character of Fas/FasL-mediated immune regulation that induces beneficial or harmful effects is associated with the onset or development of immune disorders...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28424701/clinical-overlapping-in-autoinflammatory-diseases-the-role-of-gene-duplication
#10
Paola Galozzi, Leonardo Punzi, Paolo Sfriso
No abstract text is available yet for this article.
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28424700/grand-challenges-in-immunological-memory
#11
EDITORIAL
Scott N Mueller
No abstract text is available yet for this article.
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28424699/patient-s-experience-in-pediatric-primary-immunodeficiency-disorders-computerized-classification-of-questionnaires
#12
Urs Mücke, Christian Klemann, Ulrich Baumann, Almut Meyer-Bahlburg, Xiaowei Kortum, Frank Klawonn, Werner M Lechner, Lorenz Grigull
INTRODUCTION: Primary immunodeficiency disorders (PIDs) are a heterogeneous group of more than 200 rare diseases. Timely diagnosis is of uttermost importance. Therefore, we aimed to develop a diagnostic questionnaire with computerized pattern-recognition in order to support physicians to identify suspicious patient histories. MATERIALS AND METHODS: Standardized interviews were conducted with guardians of children with PID. The questionnaire based on parental observations was developed using Colaizzis' framework for content analysis...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28424698/editorial-immuno-metabolism-in-tumor-microenvironment
#13
EDITORIAL
Heriberto Prado-García, Francisco Javier Sánchez-García
No abstract text is available yet for this article.
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28424697/regulation-of-the-functions-of-natural-cytotoxicity-receptors-by-interactions-with-diverse-ligands-and-alterations-in-splice-variant-expression
#14
REVIEW
Tatiana Pazina, Avishai Shemesh, Michael Brusilovsky, Angel Porgador, Kerry S Campbell
The natural cytotoxicity receptor (NCR) family is constituted by NKp46, NKp44, and NKp30 in humans, which are expressed mainly on natural killer (NK) cells and are encoded by the ncr1, ncr2, and ncr3 genes, respectively. NCRs have classically been defined as activating receptors that trigger cytotoxicity and cytokine responses by NK cells upon engaging with ligands on tumor cells. Several new findings, however, have challenged this model and identified alternative mechanisms regulating the function of NCRs...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28424696/spirochetal-lipoproteins-and-immune-evasion
#15
REVIEW
Alexei Christodoulides, Ani Boyadjian, Theodoros Kelesidis
Spirochetes are a major threat to public health. However, the exact pathogenesis of spirochetal diseases remains unclear. Spirochetes express lipoproteins that often determine the cross talk between the host and spirochetes. Lipoproteins are pro-inflammatory, modulatory of immune responses, and enable the spirochetes to evade the immune system. In this article, we review the modulatory effects of spirochetal lipoproteins related to immune evasion. Understanding lipoprotein-induced immunomodulation will aid in elucidating innate pathogenesis processes and subsequent adaptive mechanisms potentially relevant to spirochetal disease vaccine development and treatment...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28424695/b-cell-tolerance-to-deiminated-histones-in-balb-c-c57bl-6-and-autoimmune-prone-mouse-strains
#16
Nishant Dwivedi, Annica Hedberg, Ying Yi Zheng, Indira Neeli, Minoru Satoh, Laurence Morel, Ole Petter Rekvig, Marko Radic
Deimination, a posttranslational modification of arginine to citrulline carried out by peptidylarginine deiminases, may compromise tolerance of self-antigens. Patients with connective tissue autoimmunity, particularly rheumatoid arthritis (RA), systemic lupus erythematosus (SLE), or Felty's syndrome, present with autoantibodies to deiminated histones (dH), which thus form a category of antibodies to citrullinated protein antigens (ACPA). In general, ACPA are a sensitive diagnostic for RA and may form in response to the release of nuclear chromatin (DNA plus dH) from granulocytes, usually referred to as neutrophil extracellular traps...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28424694/immune-responses-in-the-central-nervous-system-are-anatomically-segregated-in-a-non-human-primate-model-of-human-immunodeficiency-virus-infection
#17
Barbara Tavano, Vicky Tsipouri, Gareth A D Hardy, Caroline M Royle, Michael R Keegan, Dietmar Fuchs, Steven Patterson, Neil Almond, Neil Berry, Claire Ham, Deborah Ferguson, Adriano Boasso
The human immunodeficiency virus (HIV) accesses the central nervous system (CNS) early during infection, leading to HIV-associated cognitive impairment and establishment of a viral reservoir. Here, we describe a dichotomy in inflammatory responses in different CNS regions in simian immunodeficiency virus (SIV)-infected macaques, a model for HIV infection. We found increased expression of inflammatory genes and perivascular leukocyte infiltration in the midbrain of SIV-infected macaques. Conversely, the frontal lobe showed downregulation of inflammatory genes associated with interferon-γ and interleukin-6 pathways, and absence of perivascular cuffing...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28424693/human-melanoma-derived-extracellular-vesicles-regulate-dendritic-cell-maturation
#18
Rachel L G Maus, James W Jakub, Wendy K Nevala, Trace A Christensen, Klara Noble-Orcutt, Zohar Sachs, Tina J Hieken, Svetomir N Markovic
Evolution of melanoma from a primary tumor to widespread metastasis is crucially dependent on lymphatic spread. The mechanisms regulating the initial step in metastatic dissemination via regional lymph nodes remain largely unknown; however, evidence supporting the establishment of a pre-metastatic niche is evolving. We have previously described a dysfunctional immune profile including reduced expression of dendritic cell (DC) maturation markers in the first node draining from the primary tumor, the sentinel lymph node (SLN)...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28424692/t-cells-in-osteoarthritis-alterations-and-beyond
#19
REVIEW
Yu-Sheng Li, Wei Luo, Shou-An Zhu, Guang-Hua Lei
Although osteoarthritis (OA) has been traditionally regarded as a non-inflammatory disease, reports increasingly suggest that it is inflammatory, at least in certain patients. OA patients often exhibit inflammatory infiltration of synovial membranes by macrophages, T cells, mast cells, B cells, plasma cells, natural killer cells, dendritic cells, granulocytes, etc. Although previous reviews have summarized the knowledge of inflammation in the pathogenesis of OA, as far as we know, no report review our current understanding about T cells, especially, each T cell subtype, in the biology of OA...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/28424691/increased-autophagy-related-5-gene-expression-is-associated-with-collagen-expression-in-the-airways-of-refractory-asthmatics
#20
Audrey H Poon, David F Choy, Fazila Chouiali, Rakhee K Ramakrishnan, Bassam Mahboub, Severine Audusseau, Andrea Mogas, Jeffrey M Harris, Joseph R Arron, Catherine Laprise, Qutayba Hamid
BACKGROUND: Fibrosis, particularly excessive collagen deposition, presents a challenge for treating asthmatic individuals. At present, no drugs can remove or reduce excessive collagen in asthmatic airways. Hence, the identification of pathways involved in collagen deposition would help to generate therapeutic targets to interfere with the airway remodeling process. Autophagy, a cellular degradation process, has been shown to be dysregulated in various fibrotic diseases, and genetic association studies in independent human populations have identified autophagy-related 5 (ATG5) to be associated with asthma pathogenesis...
2017: Frontiers in Immunology
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