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https://www.readbyqxmd.com/read/29348503/nkt-cells-aid-antiviral-responses
#1
Laurie A Dempsey
No abstract text is available yet for this article.
January 18, 2018: Nature Immunology
https://www.readbyqxmd.com/read/29346401/cd1d-deficiency-inhibits-the-development-of-abdominal-aortic-aneurysms-in-ldl-receptor-deficient-mice
#2
Gijs H M van Puijvelde, Amanda C Foks, Rosemarie E van Bochove, Ilze Bot, Kim L L Habets, Saskia C de Jager, Mariëtte N D Ter Borg, Puck van Osch, Louis Boon, Mariska Vos, Vivian de Waard, Johan Kuiper
An abdominal aortic aneurysm (AAA) is a dilatation of the abdominal aorta leading to serious complications and mostly to death. AAA development is associated with an accumulation of inflammatory cells in the aorta including NKT cells. An important factor in promoting the recruitment of these inflammatory cells into tissues and thereby contributing to the development of AAA is angiotensin II (Ang II). We demonstrate that a deficiency in CD1d dependent NKT cells under hyperlipidemic conditions (LDLr-/-CD1d-/- mice) results in a strong decline in the severity of angiotensin II induced aneurysm formation when compared with LDLr-/- mice...
2018: PloS One
https://www.readbyqxmd.com/read/29345366/interactions-between-the-microbiota-and-innate-and-innate-like-lymphocytes
#3
REVIEW
Michael G Constantinides
The microbiota, which consists of commensal bacteria, fungi, and viruses, limits the colonization of pathogens at barrier tissues and promotes immune homeostasis. The latter is accomplished through the induction and regulation of both innate and adaptive immune responses. Innate lymphocytes, which include the type-1 innate lymphoid cell (ILC1), NK cell, type-2 innate lymphoid cell (ILC2), type-3 innate lymphoid cell (ILC3), and lymphoid tissue inducer (LTi) cell populations, and innate-like lymphocytes, such as NKT cells, mucosal-associated invariant T (MAIT) cells, and γδ T cells, are uniquely capable of responding to the microbiota due to their tissue localization and rapid primary responses...
December 20, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/29345057/sodium-chloride-inhibits-ifn-%C3%AE-%C3%A2-but-not-il-4-production-by-invariant-nkt-cells
#4
Dongjin Jeong, Hye Young Kim, Doo Hyun Chung
Invariant NKT (iNKT) cells are a distinct subset of T cells that exert Janus-like functions in vivo by producing IFN-γ and IL-4. Sodium chloride modulates the functions of various immune cells, including conventional CD4+ T cells and macrophages. However, it is not known whether sodium chloride affects iNKT cell function, so we addressed this issue. Sodium chloride inhibited IFN-γ, but not IL-4, production by iNKT cells upon TCR or TCR-independent (IL-12 and IL-18) stimulation in a dose-dependent manner. Consistently, sodium chloride reduced the expression level of tbx21, but not gata-3, in iNKT cells stimulated with TCR engagement or IL-12 + IL-18...
January 2018: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/29320890/chimeric-antigen-receptors-in-different-cell-types-new-vehicles-join-the-race
#5
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 ALL, and resulted in a very recent FDA-approval of the first CAR-T-cell therapy...
January 10, 2018: Human Gene Therapy
https://www.readbyqxmd.com/read/29318023/microbiome-and-asthma
#6
REVIEW
Milena Sokolowska, Remo Frei, Nonhlanhla Lunjani, Cezmi A Akdis, Liam O'Mahony
The mucosal immune system is in constant communication with the vast diversity of microbes present on body surfaces. The discovery of novel molecular mechanisms, which mediate host-microbe communication, have highlighted the important roles played by microbes in influencing mucosal immune responses. Dendritic cells, epithelial cells, ILCs, T regulatory cells, effector lymphocytes, NKT cells and B cells can all be influenced by the microbiome. Many of the mechanisms being described are bacterial strain- or metabolite-specific...
2018: Asthma research and practice
https://www.readbyqxmd.com/read/29309257/the-slc22-transporter-family-a-paradigm-for-the-impact-of-drug-transporters-on-metabolic-pathways-signaling-and-disease
#7
Sanjay K Nigam
The SLC22 transporter family consists of more than two dozen members, which are expressed in the kidney, the liver, and other tissues. Evolutionary analysis indicates that SLC22 transporters fall into at least six subfamilies: OAT (organic anion transporter), OAT-like, OAT-related, OCT (organic cation transporter), OCTN (organic cation/carnitine transporter), and OCT/OCTN-related. Some-including OAT1 [SLC22A6 or NKT (novel kidney transporter)] and OAT3 (SLC22A8), as well as OCT1 (SLC22A1) and OCT2 (SLC22A2)-are widely studied drug transporters...
January 6, 2018: Annual Review of Pharmacology and Toxicology
https://www.readbyqxmd.com/read/29307241/liposomal-formulation-of-glycosphingolipids-from-sphingomonas-paucimobilis-induces-antitumor-immunity-in-mice
#8
Masood A Khan, Ahmed N Aljarbou, Yousef H Aldebasi, Mohammed S Alorainy, Arshad H Rehmani, Hina Younus, Arif Khan
Natural Killer T (NKT) cells play an important role in host`s anti-tumor immune response. Glycosphingolipids (GSLs) isolated from Sphingomonas paucimobilis have the ability to stimulate NKT cells. In the present study, the activity of free GSLs or GSLs-incorporated liposomes (glycosphingosomes) was investigated against Dimethyl-α-benzanthracene (DMBA)-induced tumors in mice. The anti-tumor immunity of GSLs or GSLs- or glycosphingosomes-loaded bone marrow-derived dendritic cells (BMDCs) was investigated in tumor-bearing mice...
January 8, 2018: Journal of Drug Targeting
https://www.readbyqxmd.com/read/29288118/statins-reduce-the-expressions-of-tim-3-on-nk-cells-and-nkt-cells-in-atherosclerosis
#9
Na Zhang, Min Zhang, Ru-Tao Liu, Peng Zhang, Chun-Lin Yang, Long-Tao Yue, Heng Li, Yong-Kang Li, Rui-Sheng Duan
3-hydroxy-3-methylglutaryl-CoA (HMG-CoA) reductase inhibitors (statins) have an immuno-regulatory effect in addition to lowing-lipids. Accumulated evidences showed that the expressions of T cell immunoglobulin- and mucin-domain-containing molecule-3(Tim-3) on natural killer (NK) cells increased in atherosclerotic patients and animal models. In this study, 14 patients treated with rosuvastatin and 12 patients with atorvastatin for more than 3 months were included and 20 patients without statins treatment as control...
December 26, 2017: European Journal of Pharmacology
https://www.readbyqxmd.com/read/29285110/large-scale-ex-vivo-expansion-of-clinical-grade-effector-cells-for-adoptive-immunotherapy
#10
Huiying Yu, Wei Chen, Changling Li, Di Lin, Junde Liu, Zien Yang, Jingang Yang, Yinghui Sun, Dongchu Ma
Cell-based adoptive immunotherapy for the treatment of various cancer types has attracted the attention of scientists. However, due to the absence of unitary standard protocols to produce large quantities of clinical-grade effector cells, it remains challenging to translate the experimental findings into clinical applications. The present study used methods complying with good manufacturing practice to induce effector cells from human peripheral blood mononuclear cells (PBMCs) of healthy donors by interleukin-2 and anti-Her-2 antibody with or without anti-CD3 antibodies (OKT3)...
December 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29280974/harnessing-invariant-nkt-cells-to-improve-influenza-vaccines-a-pig-perspective
#11
REVIEW
Guan Yang, Jürgen A Richt, John P Driver
Invariant natural killer T (iNKT) cells are an "innate-like" T cell lineage that recognize glycolipid rather than peptide antigens by their semi-invariant T cell receptors. Because iNKT cells can stimulate an extensive array of immune responses, there is considerable interest in targeting these cells to enhance human vaccines against a wide range of microbial pathogens. However, long overlooked is the potential to harness iNKT cell antigens as vaccine adjuvants for domestic animal species that express the iNKT cell-CD1d system...
December 27, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/29260741/-lymphocyte-subpopulations-levels-of-interferon-and-expression-of-their-receptors-in-patients-with-chronic-hepatitis-b-and-c-correlation-with-the-species-of-viruses-and-the-degree-of-liver-fibrosis
#12
O V Kalyuzhin, Zh B Ponezheva, I V Semenova, O N Khokhlova, L V Serebrovskaya, T S Guseva, O V Parshina, V V Maleev
AIM: To determine whether there is a correlation of the composition of circulating lymphocyte subpopulations, the serum concentrations of interferon (IFN)-α, IFN-γ, and IFN-λ3, and the lymphocyte expression of types I and II IFN receptors with the species of a disease pathogen and the degree of liver fibrosis (LF) in patients with chronic hepatitis B (CHB) and in those with chronic hepatitis C (CHC). SUBJECTS AND METHODS: The investigation enrolled 44 patients with CHC, 9 patients with CHB, and 13 clinically healthy donors...
2017: Terapevticheskiĭ Arkhiv
https://www.readbyqxmd.com/read/29251733/parabiosis-reveals-leukocyte-dynamics-in-the-kidney
#13
Jeremie M Lever, Zhengqin Yang, Ravindra Boddu, Oreoluwa O Adedoyin, Lingling Guo, Reny Joseph, Amie M Traylor, Anupam Agarwal, James F George
The immune cellular compartment of the kidney is involved in organ development and homeostasis, as well as in many pathological conditions. Little is known about the mechanisms that drive intrarenal immune responses in the presence of renal tubular and interstitial cell death. However, it is known that tissue-resident leukocytes have the potential to have distinct roles compared with circulating cells. We used a parabiosis model in C57BL/6 CD45 congenic and green fluorescent protein transgenic mice to better understand the dynamics of immune cells in the kidney...
December 18, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
https://www.readbyqxmd.com/read/29249358/initiation-of-antiviral-b-cell-immunity-relies-on-innate-signals-from-spatially-positioned-nkt-cells
#14
Mauro Gaya, Patricia Barral, Marianne Burbage, Shweta Aggarwal, Beatriz Montaner, Andrew Warren Navia, Malika Aid, Carlson Tsui, Paula Maldonado, Usha Nair, Khader Ghneim, Padraic G Fallon, Rafick-Pierre Sekaly, Dan H Barouch, Alex K Shalek, Andreas Bruckbauer, Jessica Strid, Facundo D Batista
B cells constitute an essential line of defense from pathogenic infections through the generation of class-switched antibody-secreting cells (ASCs) in germinal centers. Although this process is known to be regulated by follicular helper T (TfH) cells, the mechanism by which B cells initially seed germinal center reactions remains elusive. We found that NKT cells, a population of innate-like T lymphocytes, are critical for the induction of B cell immunity upon viral infection. The positioning of NKT cells at the interfollicular areas of lymph nodes facilitates both their direct priming by resident macrophages and the localized delivery of innate signals to antigen-experienced B cells...
December 12, 2017: Cell
https://www.readbyqxmd.com/read/29247515/intrahepatic-and-peripheral-blood-phenotypes-of-nk-and-t-cells-differential-surface-expression-of-kir-receptors
#15
Ariel Podhorzer, Andrés Machicote, Santiago Belen, Leandro Lauferman, Oscar Imventarza, Silvina Montal, Sebastián Marciano, Omar Galdame, Luis G Podesta, Leonardo Fainboim
Deep characterization of the frequencies, phenotypes and functionalities of liver and peripheral blood NK, NKT and T cells from healthy individuals is an essential step to further interpret changes in liver diseases. These data indicate that CCR7, a chemokine essential for cell migration through lymphoid organs, is almost absent in liver NK and T cells. CD56bright NK cells, which represent half of liver NK cells, showed lower expression of the inhibitory molecule NKG2A and an increased frequency of the activatory marker NKp44...
December 16, 2017: Immunology
https://www.readbyqxmd.com/read/29236128/nk-and-nkt-like-cells-in-patients-with-recurrent-furunculosis
#16
Danuta Nowicka, Ewelina Grywalska, Elżbieta Fitas, Michał Mielnik, Jacek Roliński
To analyze changes in the number and percentage of NK and NKT-like cells in relation to other immune cells as well as to examine associations between increased susceptibility to infections and NK and NKT-like status in patients with recurrent furunculosis (RF) and healthy controls. Thirty patients with RF and 20 healthy age- and sex-matched volunteers were recruited. Blood samples were examined. Lymphocyte count and cytometric analyses were conducted. For statistical analysis, the Student's t test, F test, and Brown-Forsythe test were used for comparison between groups of variables...
December 13, 2017: Archivum Immunologiae et Therapiae Experimentalis
https://www.readbyqxmd.com/read/29220536/cd36-deficiency-attenuates-immune-mediated-hepatitis-in-mice-by-modulating-the-proapoptotic-effects-of-cxcl10
#17
Che Xu, Chen Zhang, Jie Ji, Chao Wang, Jing Yang, Biao Geng, Ting Zhao, Hong Zhou, Xianmin Mu, Jinshun Pan, Shi Hu, Yuanfang Lv, Xingguo Chen, Hao Wen, Qiang You
The scavenger receptor, CD36, recognizes a diverse set of ligands, and has been implicated in a wide variety of normal and pathological processes, including lipid metabolism, angiogenesis, atherosclerosis, and phagocytosis. In particular, recent findings have demonstrated its crucial functions in sterile inflammation and tumor metastasis. However, the role of CD36 in immune-mediated hepatitis remains unclear. Concanavalin A (Con A)-induced liver injury is a well-established experimental T cell-mediated hepatitis...
December 8, 2017: Hepatology: Official Journal of the American Association for the Study of Liver Diseases
https://www.readbyqxmd.com/read/29215791/protective-effects-of-carbonyl-iron-against-multiple-low-dose-streptozotocin-induced-diabetes-in-rodents
#18
Milica Vujicic, Tamara Saksida, Marija Mostarica Stojkovic, Neda Djedovic, Ivana Stojanovic, Stanislava Stosic-Grujicic
Particulate adjuvants have shown increasing promise as effective, safe, and durable agents for the stimulation of immunity, or alternatively, the suppression of autoimmunity. Here we examined the potential of the adjuvant carbonyl iron (CI) for the modulation of organ-specific autoimmune disease-type 1 diabetes (T1D). T1D was induced by multiple low doses of streptozotocin (MLDS) that initiates beta cell death and triggers immune cell infiltration into the pancreatic islets. The results of this study indicate that the single in vivo application of CI to MLDS-treated DA rats, CBA/H mice, or C57BL/6 mice successfully counteracted the development of insulitis and hyperglycemia...
December 7, 2017: Journal of Cellular Physiology
https://www.readbyqxmd.com/read/29210987/prophylactic-sublingual-immunization-with-mycobacterium-tuberculosis-subunit-vaccine-incorporating-the-natural-killer-t-cell-agonist-alpha-galactosylceramide-enhances-protective-immunity-to-limit-pulmonary-and-extra-pulmonary-bacterial-burden-in-mice
#19
Arshad Khan, Shailbala Singh, Gloria Galvan, Chinnaswamy Jagannath, K Jagannadha Sastry
Infection by Mycobacterium tuberculosis (Mtb) remains a major global concern and the available Bacillus Calmette-Guerin (BCG) vaccine is poorly efficacious in adults. Therefore, alternative vaccines and delivery strategies focusing on Mtb antigens and appropriate immune stimulating adjuvants are needed to induce protective immunity targeted to the lungs, the primary sites of infections and pathology. We present here evidence in support of mucosal vaccination by the sublingual route in mice using the subunit Mtb antigens Ag85B and ESAT-6 adjuvanted with the glycolipid alpha-galactosylceramide (α-GalCer), a potent natural killer T (NKT) cell agonist...
December 6, 2017: Vaccines
https://www.readbyqxmd.com/read/29209309/new-directions-for-natural-killer-t-cells-in-the-immunotherapy-of-cancer
#20
Luc Teyton
Natural killer T (NKT) cells have been placed at the interface between innate and adaptive immunity by a long series of experiments that convincingly showed that beyond cytokine secretion and NK cell recruitment, NKT cells were coordinating dendritic cell and B cell maturation through direct membrane contacts and initiate productive responses. As such, NKT cells are the cellular adjuvant of many immune reactions and have functions that go much beyond what their name encapsulates. In addition, the initial discovery of the ligands of NKT cells is deeply linked to cancer biology and therapy...
2017: Frontiers in Immunology
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