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https://www.readbyqxmd.com/read/29033946/exploitation-of-scavenger-receptor-macrophage-receptor-with-collagenous-structure-by-cryptococcus-neoformans-promotes-alternative-activation-of-pulmonary-lymph-node-cd11b-conventional-dendritic-cells-and-non-protective-th2-bias
#1
Jintao Xu, Adam Flaczyk, Lori M Neal, Zhenzong Fa, Daphne Cheng, Mike Ivey, Bethany B Moore, Jeffrey L Curtis, John J Osterholzer, Michal A Olszewski
Macrophage receptor with collagenous structure (MARCO) contributes to fungal containment during the early/innate phase of cryptococcal infection; however, its role in adaptive antifungal immunity remains unknown. Using a murine model of cryptococcosis, we compared host adaptive immune responses in wild-type and MARCO(-/-) mice throughout an extended time course post-infection. Unlike in early infection, MARCO deficiency resulted in improved pulmonary fungal clearance and diminished cryptococcal dissemination during the efferent phase...
2017: Frontiers in Immunology
https://www.readbyqxmd.com/read/29032182/catalpol-suppresses-osteosarcoma-cell-proliferation-through-blocking-epithelial-mesenchymal-transition-emt-and-inducing-apoptosis
#2
Lei Wang, Gui-Bin Xue
Catalpol, an iridoid glucoside compound, is reported to possess diverse pharmacological actions. However, its effects on osteosarcoma are little to be known. In the present study, we showed that catalpol could strongly suppress osteosarcoma progression. Catalpol dose-dependently reduced the cancer cell viability. The migration of osteosarcoma cells was also consistently suppressed by catalpol treatment using the wound healing and transwell migration analysis. Catalpol reduced the expressions of Kras, receptor for activated C-kinase 1(RACK1) and matrix metalloproteinase (MMP)-2 in a dose-dependent manner, revealing the blockage of migration...
October 12, 2017: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29030488/long-lived-innate-il-17-producing-%C3%AE-%C3%AE-t-cells-modulate-antimicrobial-epithelial-host-defense-in-the-colon
#3
Abdul Rashid Bin Mohammad Muzaki, Irene Soncin, Yolanda Aphrilia Setiagani, Jianpeng Sheng, Piotr Tetlak, Klaus Karjalainen, Christiane Ruedl
Intestinal IL-17-producing cells, including Th17, γ/δ T, and innate lymphoid cells, are differentially distributed along the gastrointestinal tract. In this study, we show that the gut IL-17-producing γ/δ T (γ/δ T17) cells develop before birth and persist in the tissue as long-lived cells with minimal turnover. Most colon γ/δ T17 cells express, together with Vγ4 and CCR6, the scavenger receptor 2 and are mainly restricted to innate lymphoid follicles in the colon. Colon γ/δ T cells in mice that lack conventional dendritic cells 2 produced increased amounts of IL-17 with concomitant heightened epithelial antimicrobial response, such as the C-type lectins Reg3γ and Reg3β...
October 13, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/29027450/-cloning-and-expression-of-scavenger-receptor-class-b-bmscrb8-in-silkworm-bombyx-mori
#4
Yuzu Zhao, Kui Zhang, Mei Tang, Man Xu, Chongyang Li, Guangzhao Pan, Li Shen, Hongjuan Cui, Liqun Yang
Scavenger receptor class B is involved in various indispensable physiological processes, like the formation and inhibition of atherosclerosis or other cardiovascular diseases, innate immune defense and the removal of apoptotic cells. Here, we cloned BmSCRB8, a member of scavenger receptor class B in silkworm. We obtained the full-length cDNA sequence of BmSCRB8 by rapid amplification of cDNA ends (RACE), including 2 668 bp. The ORF of BmSCRB8 is 1 704 bp, encoding 567 amino acids. Online software prediction indicated that the molecular weight of BmSCRB8 is 63...
October 25, 2016: Sheng Wu Gong Cheng Xue Bao, Chinese Journal of Biotechnology
https://www.readbyqxmd.com/read/29027136/oligonol-promotes-glucose-uptake-by-modulating-the-insulin-signaling-pathway-in-insulin-resistant-hepg2-cells-via-inhibiting-protein-tyrosine-phosphatase-1b
#5
Himanshu Kumar Bhakta, Pradeep Paudel, Hajime Fujii, Atsuya Sato, Chan Hum Park, Takako Yokozawa, Hyun Ah Jung, Jae Sue Choi
Insulin resistance and protein tyrosine phosphatase 1B (PTP1B) overexpression are strongly associated with type 2 diabetes mellitus (T2DM), which is characterized by defects in insulin signaling and glucose intolerance. In a previous study, we demonstrated oligonol inhibits PTP1B and α-glucosidase related to T2DM. In this study, we examined the molecular mechanisms underlying the anti-diabetic effects of oligonol in insulin-resistant HepG2 cells. Glucose uptake was assessed using a fluorescent glucose tracer, 2-[N-(7-nitrobenz-2-oxa-1,3-diazol-4-yl)amino]-2-deoxyglucose, and the signaling pathway was investigated by western blotting...
October 12, 2017: Archives of Pharmacal Research
https://www.readbyqxmd.com/read/29025709/reduction-of-in-stent-restenosis-by-cholesteryl-ester-transfer-protein-inhibition
#6
Ben J Wu, Yue Li, Kwok L Ong, Yidan Sun, Sudichhya Shrestha, Liming Hou, Douglas Johns, Philip J Barter, Kerry-Anne Rye
OBJECTIVE: Angioplasty and stent implantation, the most common treatment for atherosclerotic lesions, have a significant failure rate because of restenosis. This study asks whether increasing plasma high-density lipoprotein (HDL) levels by inhibiting cholesteryl ester transfer protein activity with the anacetrapib analog, des-fluoro-anacetrapib, prevents stent-induced neointimal hyperplasia. APPROACH AND RESULTS: New Zealand White rabbits received normal chow or chow supplemented with 0...
October 12, 2017: Arteriosclerosis, Thrombosis, and Vascular Biology
https://www.readbyqxmd.com/read/29021532/monocyte-lymphocyte-cross-communication-via-soluble-cd163-directly-links-innate-immune-system-activation-and-adaptive-immune-system-suppression-following-ischemic-stroke
#7
Grant C O'Connell, Connie S Tennant, Noelle Lucke-Wold, Yasser Kabbani, Abdul R Tarabishy, Paul D Chantler, Taura L Barr
CD163 is a scavenger receptor expressed on innate immune cell populations which can be shed from the plasma membrane via the metalloprotease ADAM17 to generate a soluble peptide with lympho-inhibitory properties. The purpose of this study was to investigate CD163 as a possible effector of stroke-induced adaptive immune system suppression. Liquid biopsies were collected from ischemic stroke patients (n = 39), neurologically asymptomatic controls (n = 20), and stroke mimics (n = 20) within 24 hours of symptom onset...
October 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29019900/methylation-analysis-of-p16-slit2-scara5-and-runx3-genes-in-hepatocellular-carcinoma
#8
Gaofeng Sun, Chen Zhang, Min Feng, Wensheng Liu, Huifang Xie, Qin Qin, E Zhao, Li Wan
This study is to investigate the methylation status of multiple tumor suppressor 1 (p16), secreted glycoprotein 2 (SLIT2), scavenger receptor class A, member 5 putative (SCARA5), and human runt-related transcription factor 3 (Runx3) genes in the peripheral blood of hepatocellular carcinoma (HCC).This is a case-control study. The peripheral blood samples were collected from 25 HCC patients, 25 patients with high risk of HCC (defined as "internal control group"), and 25 healthy individuals (defined as "external control group"), respectively...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29018345/involvement-of-ppar%C3%AE-in-the-anticonvulsant-activity-of-ep-80317-a-ghrelin-receptor-antagonist
#9
Chiara Lucchi, Anna M Costa, Carmela Giordano, Giulia Curia, Marika Piat, Giuseppina Leo, Jonathan Vinet, Luc Brunel, Jean-Alain Fehrentz, Jean Martinez, Antonio Torsello, Giuseppe Biagini
Ghrelin, des-acyl ghrelin and other related peptides possess anticonvulsant activities. Although ghrelin and cognate peptides were shown to physiologically regulate only the ghrelin receptor, some of them were pharmacologically proved to activate the peroxisome proliferator-activated receptor gamma (PPARγ) through stimulation of the scavenger receptor CD36 in macrophages. In our study, we challenged the hypothesis that PPARγ could be involved in the anticonvulsant effects of EP-80317, a ghrelin receptor antagonist...
2017: Frontiers in Pharmacology
https://www.readbyqxmd.com/read/29016810/mir-30c-5p-regulates-macrophage-mediated-inflammation-and-pro-atherosclerosis-pathways
#10
Giulio Ceolotto, Alessandra Giannella, Mattia Albiero, Maniselvan Kuppusamy, Claudia Radu, Paolo Simioni, Katia Garlaschelli, Andrea Baragetti, Alberico Luigi Catapano, Elisabetta Iori, Gian Paolo Fadini, Angelo Avogaro, Saula Vigili de Kreutzenberg
Aims: Atherosclerosis is an inflammatory disease wherein cholesterol-loaded macrophages play a major role. MicroRNAs and microparticles propagate inflammatory pathways and are involved in cardiovascular disease. We aimed to screen and validate circulating microRNAs correlated with atherosclerosis development in humans, and to dissect the molecular mechanisms associated with atherogenesis using in vitro and in vivo approaches. Methods and results: A panel of 179 secreted microRNAs was screened in plasma samples of patients with and without atherosclerosis, and validated cross-sectionally and prospectively in patients followed for up to 11 years...
August 14, 2017: Cardiovascular Research
https://www.readbyqxmd.com/read/28993508/personalized-sirna-nanoparticle-systemic-therapy-using-metastatic-lymph-node-specimens-obtained-with-ebus-tbna-in-lung-cancer
#11
Tatsuya Kato, Daiyoon Lee, Huang Huang, William Cruz-Munoz, Hideki Ujiie, Kosuke Fujino, Hironobu Wada, Priya Patel, Hsin-Pei Hu, Kentaro Hirohashi, Takahiro Nakajima, Masaaki Sato, Mitsuhito Kaji, Kichizo Kaga, Yoshiro Matsui, Juan Chen, Gang Zheng, Kazuhiro Yasufuku
Inhibiting specific gene expression with short interfering RNA (siRNA) provides a new therapeutic strategy to tackle many diseases at the molecular level. Recent strategies called high-density lipoprotein (HDL)-mimicking peptide-phospholipid nanoscaffold (HPPS) nanoparticles have been used to induce siRNAs-targeted delivery to scavenger receptor class B type I receptor (SCARB1) expressing cancer cells with high efficiency. Here, eight ideal therapeutic target genes were identified for advanced lung cancer throughout the screenings using endobronchial ultrasonography-guided transbronchial needle aspiration (EBUS-TBNA) and the establishment of a personalized siRNA-nanoparticle therapy...
October 9, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28993273/acute-mental-stress-induces-mitochondrial-bioenergetic-crisis-and-hyper-fission-along-with-aberrant-mitophagy-in-the-gut-mucosa-in-rodent-model-of-stress-related-mucosal-disease
#12
Rudranil De, Somnath Mazumder, Souvik Sarkar, Subhashis Debsharma, Asim Azhar Siddiqui, Shubhra Jyoti Saha, Chinmoy Banerjee, Shiladitya Nag, Debanjan Saha, Uday Bandyopadhyay
Psychological stress, depression and anxiety lead to multiple organ dysfunctions wherein stress-related mucosal disease (SRMD) is common to people experiencing stress and also occur as a side effect in patients admitted to intensive care units; however the underlying molecular aetiology is still obscure. We report that in rat-SRMD model, cold restraint-stress severely damaged gut mitochondrial functions to generate superoxide anion (O2(•-)), depletion of ATP and shifted mitochondrial fission-fusion dynamics towards enhanced fission to induce mucosal injury...
October 6, 2017: Free Radical Biology & Medicine
https://www.readbyqxmd.com/read/28986362/hdl-protects-against-doxorubicin-induced-cardiotoxicity-in-a-scavenger-receptor-class-b-type-1-pi3k-and-akt-dependent-manner
#13
Kristina Durham, Kevin Chathely, Kei Cheng Mak, Abdul Momen, Cyrus T Thomas, Yuan-Yuan Zhao, Melissa E MacDonald, Jonathan M Curtis, Mansoor Husain, Bernardo L Trigatti
Doxorubicin is a widely used chemotherapeutic with deleterious cardiotoxic side effects. HDL has been shown to protect cardiomyocytes in vitro against doxorubicin-induced apoptosis. The scavenger receptor class B type I (SR-B1), a high affinity HDL receptor, mediates cytoprotective signaling by HDL through AKT. Here we assess whether increased HDL levels protects against doxorubicin-induced cardiotoxicity in vivo, and in cardiomyocytes in culture, and explore the intracellular signaling mechanisms involved, in particular the role of SR-B1...
October 6, 2017: American Journal of Physiology. Heart and Circulatory Physiology
https://www.readbyqxmd.com/read/28986287/deciphering-the-molecular-mechanism-underlying-anticancer-activity-of-coumestrol-in-triple-negative-breast-cancer-cells
#14
Atif Zafar, Swarnendra Singh, Yatendra Kumar Satija, Daman Saluja, Imrana Naseem
Triple-negative breast cancer (TNBC) represents the highly aggressive subgroup of breast cancers with poor prognosis due to absence of estrogen receptor (ER). Therefore, alternative targeted therapies are required against ER-negative breast cancers. Coumestrol, a phytoestrogen inhibits cell growth of ER-negative breast cancer MDA-MB-231 cells; the exact mechanism has not yet been reported. Unlike normal cells, cancer cells contain elevated copper which play an integral role in angiogenesis. The current focus of the work was to identify any possible role of copper in coumestrol cytotoxic action against breast cancer MDA-MB-231 cells...
October 3, 2017: Toxicology in Vitro: An International Journal Published in Association with BIBRA
https://www.readbyqxmd.com/read/28984832/the-role-of-omega-3-fatty-acids-in-reverse-cholesterol-transport-a-review
#15
REVIEW
Alex Pizzini, Lukas Lunger, Egon Demetz, Richard Hilbe, Guenter Weiss, Christoph Ebenbichler, Ivan Tancevski
The beneficial effects of omega-3 polyunsaturated fatty acids (n-3 PUFAs) on cardiovascular disease have been studied extensively. However, it remains unclear to what extent n-3 PUFAs may impact Reverse Cholesterol Transport (RCT). RCT describes a mechanism by which excess cholesterol from peripheral tissues is transported to the liver for hepatobiliary excretion, thereby inhibiting foam cell formation and the development of atherosclerosis. The aim of this review is to summarize the literature and to provide an updated overview of the effects of n-3 PUFAs on key players in RCT, including apoliprotein AI (apoA-I), ATP-binding cassette transporter A1 (ABCA1), ABCG1, apoE, scavenger receptor class B type I (SR-BI), cholesteryl ester transfer protein (CETP), low-density lipoprotein receptor (LDLr), cholesterol 7 alpha-hydroxylase (CYP7A1) and ABCG5/G8...
October 6, 2017: Nutrients
https://www.readbyqxmd.com/read/28983589/honokiol-triggers-receptor%C3%A2-interacting-protein-kinase-3%C3%A2-mediated-cell-death-of-neuroblastoma-cells-by-upregulating-reactive-oxygen-species
#16
Jiao Zhang, Qiuliang Liu, Longyan Shi, Pan Qin, Qi Wang
Neuroblastoma is the most common form of childhood extracranial tumor and almost half of neuroblastoma cases occur in infants under two years old. Neuroblastoma accounts for ~6‑10% of childhood cancers and 15% of cancer‑associated childhood mortality. However, an effective treatment remains to be developed. Honokiol exhibits long‑lasting central muscle relaxation, anti‑inflammatory, antibacterial, antimicrobial, antiulcer, antioxidation, antiaging and antitumor effects. Honokiol has been previously demonstrated to kill neuroblastoma cells, however, the underlying mechanism of action remains unclear...
September 26, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28975445/from-autophagy-to-mitophagy-the-roles-of-p62-in-neurodegenerative-diseases
#17
REVIEW
Haiying Liu, Chunqiu Dai, Yunlong Fan, Baolin Guo, Keke Ren, Tangna Sun, Wenting Wang
P62, also called sequestosome1 (SQSTM1), is the selective cargo receptor for autophagy to degenerate misfolded proteins. It has also been found to assist and connect parkin in pink1/parkin mitophagy pathway. Previous studies showed that p62 was in association with neurodegenerative diseases, and one of the diseases pathogenesis is P62 induced autophagy and mitophagy dysfunction. Autophagy is an important process to eliminate misfolded proteins. Intracellular aggregation including α-synuclein, Huntingtin, tau protein and ß-amyloid (Aß) protein are the misfolded proteins found in PD, HD and AD, respectively...
October 3, 2017: Journal of Bioenergetics and Biomembranes
https://www.readbyqxmd.com/read/28974795/effect-of-walnut-protein-hydrolysate-on-scopolamine-induced-learning-and-memory-deficits-in-mice
#18
Wenzhi Li, Tiantian Zhao, Jianan Zhang, Jucai Xu, Dongxiao Sun-Waterhouse, Mouming Zhao, Guowan Su
A walnut protein hydrolysate (WPH) was prepared by using a mixture of pancreatin and viscozyme L from industrially available defatted walnut meal. The antioxidant effects of WPH were confirmed and quantified by reducing power, oxygen radical absorbance capacity, hydroxyl radical radical-scavenging activity and ABTS(+)· radical-scavenging activity assays. The protective effects of WPH on scopolamine-induced learning and memory deficits in mice were also evaluated based on in vivo behavioral tests. Results showed that WPH administration would lead to significantly decreased latencies while increased crossing times and target times in the spatial probe test, and increased escape latency and decreased error times in the step-down avoidance test for the scopolamine-induced dementia mice...
September 2017: Journal of Food Science and Technology
https://www.readbyqxmd.com/read/28974560/malignant-phenotypes-in-metastatic-melanoma-are-governed-by-sr-bi-and-its-association-with-glycosylation-and-stat5-activation
#19
Katharina Kinslechner, David Schörghofer, Birgit Schütz, Maria Vallianou, Bettina Wingelhofer, Wolfgang Mikulits, Clemens Röhrl, Markus Hengstschläger, Richard Moriggl, Herbert Stangl, Mario Mikula
Metastatic melanoma is hallmarked by elevated glycolytic flux and alterations in cholesterol homeostasis. The contribution of cholesterol transporting receptors for the maintenance of a migratory and invasive phenotype is not well defined. Here, the scavenger receptor class B type I (SCARB1/SR-BI), a high-density lipoprotein (HDL) receptor, was identified as an estimator of melanoma progression in patients. We further aimed to identify the SR-BI controlled gene expression signature and its related cellular phenotypes...
October 3, 2017: Molecular Cancer Research: MCR
https://www.readbyqxmd.com/read/28968984/a-novel-deubiquitinase-inhibitor-b-ap15-triggers-apoptosis-in-both-androgen-receptor-dependent-and-independent-prostate-cancers
#20
Jianyu Cai, Xiaohong Xia, Yuning Liao, Ningning Liu, Zhiqiang Guo, Jinghong Chen, Li Yang, Huidan Long, Qianqian Yang, Xiaolan Zhang, Lu Xiao, Xuejun Wang, Hongbiao Huang, Jinbao Liu
Prostate cancer (PCa) remains a leading cause of cancer-related death in men. Especially, a subset of patients will eventually progress to the metastatic castrate-resistant prostate cancer (CRPC) which is currently incurable. Deubiquitinases (DUBs) associated with the 19S proteasome regulatory particle are increasingly emerging as significant therapeutic targets in numerous cancers. Recently, a novel small molecule b-AP15 is identified as an inhibitor of the USP14/UCHL5 (DUBs) of the 19S proteasome, resulting in cell growth inhibition and apoptosis in several human cancer cell lines...
September 8, 2017: Oncotarget
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