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Alveolar macrophage

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https://www.readbyqxmd.com/read/28723550/induced-pluripotent-stem-cell-derived-primitive-macrophages-provide-a-platform-for-modeling-tissue-resident-macrophage-differentiation-and-function
#1
Kazuyuki Takata, Tatsuya Kozaki, Christopher Zhe Wei Lee, Morgane Sonia Thion, Masayuki Otsuka, Shawn Lim, Kagistia Hana Utami, Kerem Fidan, Dong Shin Park, Benoit Malleret, Svetoslav Chakarov, Peter See, Donovan Low, Gillian Low, Marta Garcia-Miralles, Ruizhu Zeng, Jinqiu Zhang, Chi Ching Goh, Ahmet Gul, Sandra Hubert, Bernett Lee, Jinmiao Chen, Ivy Low, Nurhidaya Binte Shadan, Josephine Lum, Tay Seok Wei, Esther Mok, Shohei Kawanishi, Yoshihisa Kitamura, Anis Larbi, Michael Poidinger, Laurent Renia, Lai Guan Ng, Yochai Wolf, Steffen Jung, Tamer Önder, Evan Newell, Tara Huber, Eishi Ashihara, Sonia Garel, Mahmoud A Pouladi, Florent Ginhoux
Tissue macrophages arise during embryogenesis from yolk-sac (YS) progenitors that give rise to primitive YS macrophages. Until recently, it has been impossible to isolate or derive sufficient numbers of YS-derived macrophages for further study, but data now suggest that induced pluripotent stem cells (iPSCs) can be driven to undergo a process reminiscent of YS-hematopoiesis in vitro. We asked whether iPSC-derived primitive macrophages (iMacs) can terminally differentiate into specialized macrophages with the help of growth factors and organ-specific cues...
July 18, 2017: Immunity
https://www.readbyqxmd.com/read/28721853/us10-a-novel-npro-interacting-protein-inhibits-classical-swine-fever-virus-replication
#2
Huifang Lv, Wang Dong, Gui Qian, Jie Wang, Xiaomeng Li, Zhi Cao, Qizhuang Lv, Chengbao Wang, Kangkang Guo, Yanming Zhang
Classical swine fever (CSF) is a severe, febrile and highly contagious disease caused by classical swine fever virus (CSFV) that has resulted in huge economic losses in the pig industry worldwide. CSFV Npro has been actively studied but remains incompletely understood. Few studies have investigated the cellular proteins that interact with Npro and their participation in viral replication. Here, the yeast two-hybrid (Y2H) system was employed to screen Npro-interacting proteins from a porcine alveolar macrophage (PAM) cDNA library, and a blast search of the NCBI database revealed that 15 cellular proteins interact with Npro...
July 18, 2017: Journal of General Virology
https://www.readbyqxmd.com/read/28716863/opposing-regulation-and-roles-for-phd3-in-lung-dendritic-cells-and-alveolar-macrophages
#3
Simon J Tavernier, Nele Vanlangenakker, Jessica Vetters, Peter Carmeliet, Sophie Janssens, Bart N Lambrecht
The prolyl hydroxylase domain-containing enzymes (PHDs) are important metabolic sensors of the cell and its environment, which might be employed to alert cells of the immune system. These enzymes regulate the expression of the hypoxia inducible factor (HIF) isoforms and NF-κB, crucial transcription factors controlling cellular metabolism and inflammation. PHD/HIF signaling is activated in the allergic lung and is proposed as a potential druggable pathway. Here, we investigated the regulation and role of the PHD isoforms in CD11c-expressing dendritic cells (DCs) and macrophages (Mϕ), sensors of the environment and crucial antigen-presenting cells in the pathogenesis of asthma...
July 17, 2017: Journal of Leukocyte Biology
https://www.readbyqxmd.com/read/28716662/lgtf-effects-of-haemophilus-parasuis-los-induced-inflammation-through-regulation-of-nf-%C3%AE%C2%BAb-and-mapks-signaling-pathways
#4
Ze Zeng, Bin Zhang, Huan He, Xinnuo Chen, Yupeng Ren, Hua Yue, Cheng Tang
The lgtF gene encodes a glucosyltransferase responsible for adding a glucose to the first sugar of heptose I in the synthesis of lipooligosaccharides (LOS). To study the function of lgtF, we constructed an lgtF mutant (ΔlgtF) from Haemophilus parasuis SC096 using a natural transformation system. A highly purified preparation of LOS from ΔlgtF (ΔlgtF-LOS) exhibited an obvious truncation in structure compared to the LOS of the wild-type SC096 strain (WT-LOS). The ΔlgtF-LOS also displayed a significantly reduced ability to induce inflammatory cytokine mRNA expression of tumor necrosis factor alpha (TNF-α), interleukin-1α (IL-1α), IL-1β, IL-6 and IL-8 in porcine alveolar macrophages (PAMs) in comparison with the WT-LOS...
July 14, 2017: Microbial Pathogenesis
https://www.readbyqxmd.com/read/28715175/airborne-nanoparticle-release-and-toxicological-risk-from-metal-oxide-coated-textiles-toward-a-multi-scale-safe-by-design-approach
#5
Paride Mantecca, Kaja Kasemets, Archana Deokar, Ilana Perelshtein, Aharon Gedanken, Yeon Kyoung Bahk, Baharh Kianfar, Jing Wang
Nano metal oxides have been proposed as alternatives to Silver (Ag) nanoparticles (NPs) for antibacterial coatings. Here cotton and polyester-cotton fabrics were sonochemically coated with Zinc oxide (ZnO) ZnO and Copper oxide (CuO) CuO NPs. By varying the reaction solvent (water or ethanol), NPs with different sizes and shapes were synthesized. The cytotoxic and pro-inflammatory effects of studied NPs were investigated in vitro in human alveolar epithelial A549 and macrophage-like THP1 cells. To understand the potential respiratory impact of the NPs, the coated textiles were subjected to the abrasion tests and the released airborne particles were measured...
July 17, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28714351/activation-of-nlrp3-inflammasome-in-peripheral-nerve-contributes-to-paclitaxel-induced-neuropathic-pain
#6
Min Jia, Caihua Wu, Fang Gao, Hongchun Xiang, Ning Sun, Ping Peng, Jingjing Li, Xiaocui Yuan, Hongping Li, Xianfang Meng, Bo Tian, Jing Shi, Man Li
Background Paclitaxel is commonly used as a cancer chemotherapy drug that frequently causes peripheral neuropathic pain. Inflammasome is a multiprotein complex consisting of Nod-like receptor proteins (NLRPs), apoptosis-associated speck-like protein, and caspase-1, which functions to switch on the inflammatory process and the release of interleukin-1β. Growing evidences have supported that peripheral interleukin-1β is critical in enhancing paclitaxel-induced neuropathic pain. However, whether activation of NLRP3 inflammasome in peripheral nerve contributes to paclitaxel-induced neuropathic pain is still unclear...
January 2017: Molecular Pain
https://www.readbyqxmd.com/read/28711881/clinical-utility-of-ykl-40-in-polymyositis-dermatomyositis-associated-interstitial-lung-disease
#7
Hironao Hozumi, Tomoyuki Fujisawa, Noriyuki Enomoto, Ran Nakashima, Yasunori Enomoto, Yuzo Suzuki, Masato Kono, Masato Karayama, Kazuki Furuhashi, Akihiro Murakami, Naoki Inui, Yutaro Nakamura, Tsuneyo Mimori, Takafumi Suda
OBJECTIVE: Interstitial lung disease (ILD) is involved in polymyositis/dermatomyositis (PM/DM), a disease associated with poor prognoses. Chitinase-3-like-1 protein (YKL-40) has pleiotropic biological activities involved in inflammation, cell proliferation, and tissue remodeling; however, the clinical application of YKL-40 remains limited. We investigated the clinical significance of YKL-40 in PM/DM-ILD. METHODS: Sixty-nine consecutive patients with PM/DM-ILD and 34 healthy controls were analyzed...
July 15, 2017: Journal of Rheumatology
https://www.readbyqxmd.com/read/28705941/tyk2-as-a-target-for-immune-regulation-in-human-viral-bacterial-pneumonia
#8
Johanna Berg, Katja Zscheppang, Diana Fatykhova, Mario Tönnies, Torsten T Bauer, Paul Schneider, Jens Neudecker, Jens C Rückert, Stephan Eggeling, Maria Schimek, Achim D Gruber, Norbert Suttorp, Stefan Hippenstiel, Andreas C Hocke
The severity and lethality of influenza A virus (IAV) infections is frequently aggravated by secondary bacterial pneumonia. However, the mechanisms in human lung tissue that provoke this increase in fatality are unknown and therapeutic immune modulatory options are lacking.We established a human lung ex vivo co-infection model to investigate innate immune related mechanisms contributing to the susceptibility of secondary pneumococcal pneumonia.We revealed that type I and III interferon (IFN) inhibits Streptococcus pneumoniae-induced interleukin (IL)-1β release...
July 2017: European Respiratory Journal: Official Journal of the European Society for Clinical Respiratory Physiology
https://www.readbyqxmd.com/read/28704922/transcriptome-differences-in-porcine-alveolar-macrophages-from-tongcheng-and-large-white-pigs-in-response-to-highly-pathogenic-porcine-reproductive-and-respiratory-syndrome-virus-prrsv-infection
#9
Wan Liang, Likai Ji, Yu Zhang, Yueran Zhen, Qingde Zhang, Xuewen Xu, Bang Liu
Porcine reproductive and respiratory syndrome virus (PRRSV) is a single-stranded positive-sense RNA virus that can cause devastating reproductive failure and respiratory tract lesions, which has led to serious damage to the swine industry worldwide. Our previous studies have indicated that Tongcheng (TC) pigs, a Chinese local breed, have stronger resistance or tolerance to PRRSV infection than Large White (LW) pigs. This study aims to investigate their host transcriptome differences in porcine alveolar macrophages (PAMs) at 7 days post challenge...
July 12, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28701484/sirt1-regulates-macrophage-self-renewal
#10
Francesco Imperatore, Julien Maurizio, Stephanie Vargas Aguilar, Clara J Busch, Jérémy Favret, Elisabeth Kowenz-Leutz, Wilfried Cathou, Rebecca Gentek, Pierre Perrin, Achim Leutz, Carole Berruyer, Michael H Sieweke
Mature differentiated macrophages can self-maintain by local proliferation in tissues and can be extensively expanded in culture under specific conditions, but the mechanisms of this phenomenon remain only partially defined. Here, we show that SIRT1, an evolutionary conserved regulator of life span, positively affects macrophage self-renewal ability in vitro and in vivo Overexpression of SIRT1 during bone marrow-derived macrophage differentiation increased their proliferative capacity. Conversely, decrease of SIRT1 expression by shRNA inactivation, CRISPR/Cas9 mediated deletion and pharmacological inhibition restricted macrophage self-renewal in culture...
July 12, 2017: EMBO Journal
https://www.readbyqxmd.com/read/28701473/zbtb7a-induction-in-alveolar-macrophages-is-implicated-in-anti-hla-mediated-lung-allograft-rejection
#11
Deepak K Nayak, Fangyu Zhou, Min Xu, Jing Huang, Moriya Tsuji, Jinsheng Yu, Ramsey Hachem, Andrew E Gelman, Ross M Bremner, Michael A Smith, Thalachallour Mohanakumar
Chronic rejection significantly limits long-term success of solid organ transplantation. De novo donor-specific antibodies (DSAs) to mismatched donor human leukocyte antigen after human lung transplantation predispose lung grafts to chronic rejection. We sought to delineate mediators and mechanisms of DSA pathogenesis and to define early inflammatory events that trigger chronic rejection in lung transplant recipients and obliterative airway disease, a correlate of human chronic rejection, in mouse. Induction of transcription factor zinc finger and BTB domain containing protein 7a (Zbtb7a) was an early response critical in the DSA-induced chronic rejection...
July 12, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28700567/recombinant-ccn1-prevents-hyperoxia-induced-lung-injury-in-neonatal-rats
#12
Ruben Vaidya, Ronald Zambrano, Julia K Hummler, Shihua Luo, Matthew R Duncan, Karen Young, Lester F Lau, Shu Wu
BACKGROUND: Cystein rich protein 61 (Cyr61/CCN1) is a member of the CCN family of matricellular proteins that plays an improtant role in tissue development and remodeling. However, the role of CCN1 in in the pathogensis of bronchopulmonary dysplasia (BPD) is unknown. Accordingly, we have investigated the effects of CCN1 on a hyperoxia-induced lung injury model in neonatal rats. METHODS: In experiment 1: newborn rats were randomized to room air (RA) or 85% oxygen (O2) for 7 or 14 days and we assessed the expression of CCN1...
July 12, 2017: Pediatric Research
https://www.readbyqxmd.com/read/28698506/ubiquitination-in-periodontal-disease-a-review
#13
REVIEW
Sachio Tsuchida, Mamoru Satoh, Masaki Takiwaki, Fumio Nomura
Periodontal disease (periodontitis) is a chronic inflammatory condition initiated by microbial infection that leads to gingival tissue destruction and alveolar bone resorption. The periodontal tissue's response to dental plaque is characterized by the accumulation of polymorphonuclear leukocytes, macrophages, and lymphocytes, all of which release inflammatory mediators and cytokines to orchestrate the immunopathogenesis of periodontal disease. Ubiquitination is achieved by a mechanism that involves a number of factors, including an ubiquitin-activating enzyme, ubiquitin-conjugating enzyme, and ubiquitin-protein ligase...
July 10, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28698398/tnfr-tnf-%C3%AE-signaling-pathway-regulates-apoptosis-of-alveolar-macrophages-in-coal-workers-pneumoconiosis
#14
Qing-Zeng Qian, Xiang-Ke Cao, Hai-Yan Liu, Guo-Ying Zheng, Qing-Qiang Qian, Fu-Hai Shen
We explored the role of TNFR/TNF-α signalingin apoptosis among alveolar macrophages (AM) and its relevance to the development of coal workers' pneumoconiosis (CWP). Purified alveolar macrophages (AMs) were prepared from bronchoalveolar lavage fluid harvested from 366 CWP patients and 120 healthy subjects enrolled inthe study. The purified AMs were then divided into control, SOD, anti-TNFR, TNFR and NFkB inhibitor groups and analyzed for apoptosis usingflow cytometry (sub-diploid peak) and western blotting (Bcl-2, Caspase-3 and Caspase-8 expression)...
July 1, 2017: Oncotarget
https://www.readbyqxmd.com/read/28696231/comparison-of-plasma-and-intrapulmonary-concentrations-of-nafithromycin-wck-4873-in-healthy-adult-subjects
#15
Keith A Rodvold, Mark H Gotfried, Rakesh Chugh, Mugdha Gupta, H David Friedland, Ashima Bhatia
Nafithromycin concentrations in plasma, epithelial lining fluid (ELF), and alveolar macrophage (AM) of 37 healthy adult subjects were measured following repeated dosing of oral nafithromycin 800 mg once daily for three days. Noncompartmental pharmacokinetic (PK) parameters were determined from serial plasma samples collected over a 24-hour interval following the first and third oral doses. Each subject underwent one standardized bronchoscopy with bronchoalveolar lavage (BAL) at 3, 6, 9, 12, 24 or 48 hours after the third dose of nafithromycin...
July 10, 2017: Antimicrobial Agents and Chemotherapy
https://www.readbyqxmd.com/read/28694521/genome-wide-analysis-of-long-noncoding-rna-profiling-in-prrsv-infected-pam-cells-by-rna-sequencing
#16
Jing Zhang, Pu Sun, Lipeng Gan, Weijie Bai, Zhijia Wang, Dong Li, Yimei Cao, Yuanfang Fu, Pinghua Li, Xingwen Bai, Xueqing Ma, Huifang Bao, Yingli Chen, Zaixin Liu, Zengjun Lu
Porcine reproductive and respiratory syndrome (PRRS) is a major threat to the global swine industry and causes tremendous economic losses. Its causative agent, porcine reproductive and respiratory syndrome virus (PRRSV), primarily infects immune cells, such as porcine alveolar macrophages and dendritic cells. PRRSV infection results in immune suppression, antibody-dependent enhancement, and persistent infection. Highly pathogenic strains in China cause high fever and severe inflammatory responses in the lungs...
July 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28694385/monocyte-derived-alveolar-macrophages-drive-lung-fibrosis-and-persist-in-the-lung-over-the-life-span
#17
Alexander V Misharin, Luisa Morales-Nebreda, Paul A Reyfman, Carla M Cuda, James M Walter, Alexandra C McQuattie-Pimentel, Ching-I Chen, Kishore R Anekalla, Nikita Joshi, Kinola J N Williams, Hiam Abdala-Valencia, Tyrone J Yacoub, Monica Chi, Stephen Chiu, Francisco J Gonzalez-Gonzalez, Khalilah Gates, Anna P Lam, Trevor T Nicholson, Philip J Homan, Saul Soberanes, Salina Dominguez, Vince K Morgan, Rana Saber, Alexander Shaffer, Monique Hinchcliff, Stacy A Marshall, Ankit Bharat, Sergejs Berdnikovs, Sangeeta M Bhorade, Elizabeth T Bartom, Richard I Morimoto, William E Balch, Jacob I Sznajder, Navdeep S Chandel, Gökhan M Mutlu, Manu Jain, Cara J Gottardi, Benjamin D Singer, Karen M Ridge, Neda Bagheri, Ali Shilatifard, G R Scott Budinger, Harris Perlman
Little is known about the relative importance of monocyte and tissue-resident macrophages in the development of lung fibrosis. We show that specific genetic deletion of monocyte-derived alveolar macrophages after their recruitment to the lung ameliorated lung fibrosis, whereas tissue-resident alveolar macrophages did not contribute to fibrosis. Using transcriptomic profiling of flow-sorted cells, we found that monocyte to alveolar macrophage differentiation unfolds continuously over the course of fibrosis and its resolution...
July 10, 2017: Journal of Experimental Medicine
https://www.readbyqxmd.com/read/28693575/interleukin-2-enhancer-binding-factor-2-interacts-with-the-nsp9-or-nsp2-of-porcine-reproductive-and-respiratory-syndrome-virus-and-exerts-negatively-regulatory-effect-on-the-viral-replication
#18
Xuexia Wen, Ting Bian, Zhibang Zhang, Lei Zhou, Xinna Ge, Jun Han, Xin Guo, Hanchun Yang, Kangzhen Yu
BACKGROUND: Porcine reproductive and respiratory syndrome virus (PRRSV) causes reproductive failures in sows and respiratory diseases in growing pigs, resulting in huge economic loss for the pig production worldwide. The nonstructural protein 9 (nsp9) and nonstructural protein 2 (nsp2) of PRRSV are known to play important roles in viral replication. Cellular interleukin-2 enhancer binding factor 2 (ILF2) participates in many cellular pathways and involves in life cycle of some viruses...
July 11, 2017: Virology Journal
https://www.readbyqxmd.com/read/28689212/coal-mine-dust-desquamative-chronic-interstitial-pneumonia-a-precursor-of-dust-related-diffuse-fibrosis-and-of-emphysema
#19
Tomislav M Jelic, Oscar C Estalilla, Phyllis R Sawyer-Kaplan, Milton J Plata, Jeremy T Powers, Mary Emmett, John T Kuenstner
BACKGROUND: Diseases associated with coal mine dust continue to affect coal miners. Elucidation of initial pathological changes as a precursor of coal dust-related diffuse fibrosis and emphysema, may have a role in treatment and prevention. OBJECTIVE: To identify the precursor of dust-related diffuse fibrosis and emphysema. METHODS: Birefringent silica/silicate particles were counted by standard microscope under polarized light in the alveolar macrophages and fibrous tissue in 25 consecutive autopsy cases of complicated coal worker's pneumoconiosis and in 21 patients with tobacco-related respiratory bronchiolitis...
July 2017: International Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28686859/the-accr-2-ual-of-m2-macrophages-provides-some-breathing-room
#20
Preethi Vijayaraj, Brigitte N Gomperts
Lung tissue can robustly regenerate functional alveolar units after injury, but the mechanisms are unknown. Lechner et al. (2017) in this issue of Cell Stem Cell demonstrate that lung regeneration is facilitated by bone-marrow-derived myeloid cells that are recruited to the lung through a CCL2-CCR2 chemokine axis and by IL-13 expressing innate lymphoid cells.
July 6, 2017: Cell Stem Cell
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