keyword
MENU ▼
Read by QxMD icon Read
search

regulatory macrophage

keyword
https://www.readbyqxmd.com/read/28931237/histone-methyltransferase-set8-epigenetically-reprograms-host-immune-responses-to-assist-mycobacterial-survival
#1
Vikas Singh, Praveen Prakhar, R S Rajmani, Kasturi Mahadik, Salik Miskat Borbora, Kithiganahalli Narayanaswamy Balaji
NQO1 and TRXR1 are important host reductases implicated in the regulation of inflammation and apoptosis. Although the transcriptional machinery governing these processes have been extensively investigated, the associated epigenetic regulatory events remain unclear. Here, we report that SET8, a histone H4 lysine 20 monomethylase (H4K20me1), is highly induced during Mycobacterium tuberculosis infection that orchestrates immune evasion strategies through the induction of NQO1 and TRXR1 in vivo. SET8, along with FoxO3a, mediates an active NQO1-PGC1-α complex, which promotes the anti-inflammatory M2 macrophage phenotype, and assists TRXR1-regulated arrest of tumor necrosis factor-related apoptosis-inducing ligand-induced apoptosis...
August 15, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/28929190/mining-the-complex-family-of-protein-tyrosine-phosphatases-for-checkpoint-regulators-in-immunity
#2
Claudia Penafuerte, Luis Alberto Perez-Quintero, Valerie Vinette, Teri Hatzihristidis, Michel L Tremblay
The family of protein tyrosine phosphatases (PTPs) includes 107 genes in humans that are diverse in their structures and expression profiles. The majority are present in immune cells and play various roles in either inhibiting or promoting the duration and amplitude of signaling cascades. Several PTPs, including TC-PTP (PTPN2) and SHP-1 (PTPN6), have been recognized as being crucial for maintaining proper immune response and self-tolerance, and have gained recognition as true immune system checkpoint modulators...
September 20, 2017: Current Topics in Microbiology and Immunology
https://www.readbyqxmd.com/read/28928941/computational-design-of-molecular-motors-as-nanocircuits-in-leishmaniasis
#3
Dipali Kosey, Shailza Singh
Cutaneous leishmaniasis is the most common form of lesihmaniasis, caused by Leishmania major and is spread by the bite of a sandfly .This species infects the macrophages and dendritic cells Due to multi-drug resistance, there is a need for a new therapeutic technique. Recently, a novel molecular motor of Leishmania, Myosin XXI, was classified and characterized. In addition, the drug resistance in this organism has been linked with the overexpression of ABC transporters. Systems biology aims to study the simulation and modeling of natural biological systems whereas synthetic biology deals with building novel and artificial biological parts and devices  Together they have contributed enormously to drug discovery, vaccine design and development, infectious disease detection and diagnostics...
2017: F1000Research
https://www.readbyqxmd.com/read/28920002/ep4-antagonism-by-e7046-diminishes-myeloid-immunosuppression-and-synergizes-with-treg-reducing-il-2-diphtheria-toxin-fusion-protein-in-restoring-anti-tumor-immunity
#4
Diana I Albu, Zichun Wang, Kuan-Chun Huang, Jiayi Wu, Natalie Twine, Sarah Leacu, Christy Ingersoll, Lana Parent, Winnie Lee, Diana Liu, Renee Wright-Michaud, Namita Kumar, Galina Kuznetsov, Qian Chen, Wanjun Zheng, Kenichi Nomoto, Mary Woodall-Jappe, Xingfeng Bao
Reprogramming of immunosuppressive tumor microenvironment (TME) by targeting alternatively activated tumor associated macrophages (M2TAM), myeloid-derived suppressor cells (MDSC), and regulatory T cells (Tregs), represents a promising strategy for developing novel cancer immunotherapy. Prostaglandin E2 (PGE2), an arachidonic acid pathway metabolite and mediator of chronic inflammation, has emerged as a powerful immunosuppressor in the TME through engagement with one or more of its 4 receptors (EP1-EP4). We have developed E7046, an orally bioavailable EP4-specific antagonist and show here that E7046 has specific and potent inhibitory activity on PGE2-mediated pro-tumor myeloid cell differentiation and activation...
2017: Oncoimmunology
https://www.readbyqxmd.com/read/28919780/the-role-and-significance-of-vegfr2-regulatory-t-cells-in-tumor-immunity
#5
REVIEW
Panrong Zhu, Chenxi Hu, Kaiyuan Hui, Xiaodong Jiang
Tumor development is closely related to angiogenesis, and VEGFR2 plays an important role in tumor angiogenesis. It is broadly expressed in the blood vessels, especially in the microvessels of tumor tissues. Furthermore, VEGFR2 is detected on the surface of the cell membrane in various immune cells, such as dendritic cells, macrophages, and regulatory T cells (Tregs). Tregs, which are one of the key negative regulatory factors in tumor immune microenvironments, show high-level expression of VEGFR2 which participates in the regulation of immunosuppressive function...
2017: OncoTargets and Therapy
https://www.readbyqxmd.com/read/28916727/inflammatory-responses-induce-an-identity-crisis-of-alveolar-macrophages-leading-to-pulmonary-alveolar-proteinosis
#6
Risa Ebina-Shibuya, Mitsuyo Matsumoto, Makoto Kuwahara, Kyoung-Jin Jang, Manabu Sugai, Yoshiaki Ito, Ryo Funayama, Keiko Nakayama, Yuki Sato, Naoto Ishii, Yasunobu Okamura, Kengo Kinoshita, Kohei Kometani, Tomohiro Kurosaki, Akihiko Muto, Masakazu Ichinose, Masakatsu Yamashita, Kazuhiko Igarashi
Pulmonary alveolar proteinosis (PAP) is a severe respiratory disease characterized by dyspnea caused by accumulation of surfactant protein. Dysfunction of alveolar macrophages (AMs), which regulate the homeostasis of surfactant protein, leads to the development of PAP, for example, in mice lacking BTB and CNC homology 2 (Bach2). However, how Bach2 helps prevent PAP is unknown, and cell-specific effects of Bach2 are undefined. Using mice lacking Bach2 in specific cell types, we found that the PAP-phenotype of Bach2-deficient mice is due to Bach2 deficiency in more than two types of immune cells...
September 15, 2017: Journal of Biological Chemistry
https://www.readbyqxmd.com/read/28915632/decitabine-inhibits-t-cell-proliferation-via-a-novel-tet2-dependent-mechanism-and-exerts-potent-protective-effect-in-mouse-auto-and-allo-immunity-models
#7
Xue Wang, Jun Wang, Yong Yu, Tonghui Ma, Ping Chen, Bing Zhou, Ran Tao
Multiple sclerosis (MS) is an autoimmune disease characterized by the dysregulated immune response including innate and adaptive immune responses. Increasing evidence has proven the importance of epigenetic modification in the progression of MS. Recent studies revealed that low-dose decitabine (Dec, 5-Aza-2'-deoxycytidine), which incorporates into replicating DNA and inhibits DNA methylation, could prevent experimental autoimmune encephalomyelitis (EAE) development by increasing the number of regulatory T cells (Tregs)...
August 22, 2017: Oncotarget
https://www.readbyqxmd.com/read/28915327/adipose-tissue-in-hiv-infection
#8
John R Koethe
HIV infection and antiretroviral therapy (ART) treatment exert diverse effects on adipocytes and stromal-vascular fraction cells, leading to changes in adipose tissue quantity, distribution, and energy storage. A HIV-associated lipodystrophic condition was recognized early in the epidemic, characterized by clinically apparent changes in subcutaneous, visceral, and dorsocervical adipose depots. Underlying these changes is altered adipose tissue morphology and expression of genes central to adipocyte maturation, regulation, metabolism, and cytokine signaling...
September 12, 2017: Comprehensive Physiology
https://www.readbyqxmd.com/read/28912533/oral-fibroblasts-modulate-the-macrophage-response-to-bacterial-challenge
#9
Rinat Tzach-Nahman, Rizan Nashef, Omer Fleissig, Aharon Palmon, Lior Shapira, Asaf Wilensky, Gabriel Nussbaum
Tissue damage in chronic periodontal disease is driven by the host response to a dysbiotic microbiota, and not by bacteria directly. Among chronic inflammatory diseases of the oral cavity, inflammation and tissue damage around dental implants (peri-implantitis) is emerging as a major clinical challenge, since it is more severe and less responsive to treatment compared to inflammation around natural teeth. We tested whether oral fibroblasts from the periodontal ligament (PDLF), which are present around natural teeth but not around dental implants, actively regulate inflammatory responses to bacterial stimulation...
September 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28905935/age-related-differences-in-interferon-regulatory-factor-4-and-5-signaling-in-ischemic-brains-of-mice
#10
Shou-Cai Zhao, Chun Wang, Heng Xu, Wen-Qian Wu, Zhao-Hu Chu, Ling-Song Ma, Ying-Dong Zhang, Fudong Liu
Stroke is a disease that mainly affects the elderly. Since the age-related differences in stroke have not been well studied, modeling stroke in aged animals is clinically more relevant. The inflammatory responses to stroke are a fundamental pathological procedure, in which microglial activation plays an important role. Interferon regulatory factor-5 (IRF5) and IRF4 regulate M1 and M2 activation of macrophages, respectively, in peripheral inflammation; but it is unknown whether IRF5/IRF4 are also involved in cerebral inflammatory responses to stroke and whether age-related differences of the IRF5/IRF4 signaling exist in ischemic brain...
September 14, 2017: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/28904130/ccr5-dependent-homing-of-t-regulatory-cells-to-the-tumor-microenvironment-contributes-to-skin-squamous-cell-carcinoma-development
#11
Carine Ervolino de Oliveira, Thais Helena Gasparoto, Claudia Ramos Pinheiro, Nádia Ghinelli Amôr, Maria Renata Sales Nogueira, Ramon Kaneno, Gustavo Pompermaier Garlet, Vanessa Soares Lara, João Santana da Silva, Karen Angélica Cavassani, Ana Paula Campanelli
Squamous cell carcinoma (SCC) is one of the most common human cancers worldwide. Recent studies show that regulatory T cells (Tregs) have a critical role in the modulation of an anti- tumor immune response, and consequently the SCC development. Since the accumulation of Tregs at the tumor site is, in part, due to selective recruitment through CCR5 and CCR5-associated chemokines, we investigated the role of CCR5 in the SCC development. Our findings showed that CCR5-deficient mice (CCR5KO) were efficient in controlling papilloma's incidence when compared with wild-type mice...
September 13, 2017: Molecular Cancer Therapeutics
https://www.readbyqxmd.com/read/28903359/expression-of-sialyl-tn-sugar-antigen-in-bladder-cancer-cells-affects-response-to-bacillus-calmette-gu%C3%A3-rin-bcg-and-to-oxidative-damage
#12
Paulo F Severino, Mariana Silva, Mylene Carrascal, Nadia Malagolini, Mariella Chiricolo, Giulia Venturi, Annalisa Astolfi, Mariangela Catera, Paula A Videira, Fabio Dall'Olio
The sialyl-Tn (sTn) antigen is an O-linked carbohydrate chain aberrantly expressed in bladder cancer (BC), whose biosynthesis is mainly controlled by the sialyltransferase ST6GALNAC1. Treatment with Bacillus Calmette-Guérin (BCG) is the most effective adjuvant immunotherapy for superficial BC but one third of the patients fail to respond. A poorly understood correlation between the expression of sTn and BC patient's response to BCG was previously observed. By analyzing tumor tissues, we showed that patients with high ST6GALNAC1 and IL-6 mRNA expression were BCG responders...
August 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28903313/snx10-promotes-phagosome-maturation-in-macrophages-and-protects-mice-against-listeria-monocytogenes-infection
#13
Jun Lou, Xiawei Li, Wei Huang, Jingjing Liang, Mingzhu Zheng, Ting Xu, Jun Lyu, Dan Li, Qin Xu, Xuexiao Jin, Guotong Fu, Di Wang, Linrong Lu
Listeria monocytogenes (L. monocytogenes), which is a facultative intracellular bacterial pathogen that causes listeriosis, is widely used to study the mammalian immune response to infection. After phagocytosis by professional phagocytes, L. monocytogenes is initially contained within phagosomes, which mature into phagolysosomes, where the bacteria are degraded. Although phagocytosis and subsequent phagosome maturation is essential for the clearance of infectious microbial pathogens, the underlying regulatory mechanisms are still unclear...
August 15, 2017: Oncotarget
https://www.readbyqxmd.com/read/28902388/transcriptional-repression-in-macrophages-basic-mechanisms-and-alterations-in-metabolic-inflammatory-diseases
#14
REVIEW
Eckardt Treuter, Rongrong Fan, Zhiqiang Huang, Tomas Jakobsson, Nicolas Venteclef
Macrophage differentiation and signal responses are coordinated by closely linked transcriptional and epigenomic mechanisms that trigger gene expression. In contrast to well-characterized transcriptional activation pathways in response to diverse metabolic and inflammatory signals, we just begin appreciating that transcriptional repression is equally important. Here we will highlight macrophage pathways that are controlled by multifaceted repression events, along with a discussion of underlying regulatory mechanisms and components...
September 13, 2017: FEBS Letters
https://www.readbyqxmd.com/read/28895584/effects-of-lobeglitazone-a-novel-thiazolidinedione-on-adipose-tissue-remodeling-and-brown-and-beige-adipose-tissue-development-in-db-db-mice
#15
G Kim, Y-H Lee, M R Yun, J-Y Lee, E G Shin, B-W Lee, E S Kang, B-S Cha
BACKGROUND/OBJECTIVES: We investigated the effect of long-term treatment with lobeglitazone, a novel thiazolidinedione-based activator of PPARγ, on adipose tissue (AT), focusing on its effects on insulin resistance in obese db/db mice. METHODS: Seven-week-old male db/db mice were assigned to either a vehicle-treated (n=8) or lobeglitazone-treated (n=8) group. Lobeglitazone (1 mg/kg daily) was injected intraperitoneally for 20 weeks. RESULTS: Lobeglitazone treatment for 20 weeks resulted in a remarkably improved glycemic index, including significantly decreased glucose levels, enhanced insulin sensitivity, and preserved pancreatic beta cells...
September 12, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28892492/hif-1%C3%AE-is-a-key-regulator-in-potentiating-suppressor-activity-and-limiting-the-microbicidal-capacity-of-mdsc-like-cells-during-visceral-leishmaniasis
#16
Akil Hammami, Belma Melda Abidin, Tania Charpentier, Aymeric Fabié, Annie-Pier Duguay, Krista M Heinonen, Simona Stäger
Leishmania donovani is known to induce myelopoiesis and to dramatically increase extramedullary myelopoiesis. This results in splenomegaly, which is then accompanied by disruption of the splenic microarchitecture, a chronic inflammatory environment, and immunosuppression. Chronically inflamed tissues are typically hypoxic. The role of hypoxia on myeloid cell functions during visceral leishmaniasis has not yet been studied. Here we show that L. donovani promotes the output from the bone marrow of monocytes with a regulatory phenotype that function as safe targets for the parasite...
September 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28891811/nf-%C3%AE%C2%BAb-regulates-gdf-15-to-suppress-macrophage-surveillance-during-early-tumor-development
#17
Nivedita M Ratnam, Jennifer M Peterson, Erin E Talbert, Katherine J Ladner, Priyani V Rajasekera, Carl R Schmidt, Mary E Dillhoff, Benjamin J Swanson, Ericka Haverick, Raleigh D Kladney, Terence M Williams, Gustavo W Leone, David J Wang, Denis C Guttridge
Macrophages are attracted to developing tumors and can participate in immune surveillance to eliminate neoplastic cells. In response, neoplastic cells utilize NF-κB to suppress this killing activity, but the mechanisms underlying their self-protection remain unclear. Here, we report that this dynamic interaction between tumor cells and macrophages is integrally linked by a soluble factor identified as growth and differentiation factor 15 (GDF-15). In vitro, tumor-derived GDF-15 signals in macrophages to suppress their proapoptotic activity by inhibiting TNF and nitric oxide (NO) production...
September 11, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/28891095/biological-and-clinical-implications-of-herbal-medicine-and-natural-products-for-the-treatment-of-inflammatory-bowel-disease
#18
REVIEW
Bao-Jian Guo, Zhao-Xiang Bian, Hong-Cong Qiu, Yi-Tao Wang, Ying Wang
Inflammatory bowel disease (IBD) is a group of chronic inflammatory disorders that includes Crohn's disease (CD) and ulcerative colitis (UC). Homeostasis of various regulatory factors involved with intestinal immunity is disrupted in IBD, including the intestinal epithelial barrier, macrophages, and cellular mediators such as cytokines and chemokines. No successful treatment is currently available for the management of IBD. Natural products and herbal medicines have exhibited efficacy for UC and CD in experimental models and clinical trials with the following activities: (1) maintenance of integrity of the intestinal epithelial barrier, (2) regulation of macrophage activation, (3) modulation of innate and adaptive immune response, and (4) inhibition of TNF-α activity...
August 2017: Annals of the New York Academy of Sciences
https://www.readbyqxmd.com/read/28891065/il4-induced-gene-1-is-secreted-at-the-immune-synapse-and-modulates-tcr-activation-independently-of-its-enzymatic-activity
#19
Aude Aubatin, Nouhoum Sako, Xavier Decrouy, Emmanuel Donnadieu, Valérie Molinier-Frenkel, Flavia Castellano
Amino-acid catabolizing enzymes produced by mononuclear phagocytes play a central role in regulating the immune response. The mammalian phenylalanine-catabolizing enzyme IL4-induced gene 1 (IL4I1) inhibits effector T lymphocyte proliferation and facilitates regulatory T-cell development. IL4I1 expression by macrophages of various human tumors may affect patient prognosis as it facilitates tumor escape from the T-cell response in murine models. Its enzymatic activity appears to participate in its effects, but some actions of IL4I1 remain unclear...
September 10, 2017: European Journal of Immunology
https://www.readbyqxmd.com/read/28890333/static-and-dynamic-dna-loops-form-ap-1-bound-activation-hubs-during-macrophage-development
#20
Douglas H Phanstiel, Kevin Van Bortle, Damek Spacek, Gaelen T Hess, Muhammad Saad Shamim, Ido Machol, Michael I Love, Erez Lieberman Aiden, Michael C Bassik, Michael P Snyder
The three-dimensional arrangement of the human genome comprises a complex network of structural and regulatory chromatin loops important for coordinating changes in transcription during human development. To better understand the mechanisms underlying context-specific 3D chromatin structure and transcription during cellular differentiation, we generated comprehensive in situ Hi-C maps of DNA loops in human monocytes and differentiated macrophages. We demonstrate that dynamic looping events are regulatory rather than structural in nature and uncover widespread coordination of dynamic enhancer activity at preformed and acquired DNA loops...
September 1, 2017: Molecular Cell
keyword
keyword
32078
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"