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https://www.readbyqxmd.com/read/28642789/androgen-receptor-localizes-to-plasma-membrane-by-binding-to-caveolin-1-in-mouse-sertoli-cells
#1
Qiong Deng, Yong Wu, Zeng Zhang, Yue Wang, Minghua Li, Hui Liang, Yaoting Gui
The nonclassical androgen signaling pathway translates signals into alterations in cellular function within minutes, and this action is proposed to be mediated by an androgen receptor (AR) localized to the plasma membrane. This study was designed to determine the mechanism underlying the membrane association of androgen receptor in TM4 cells, a mouse Sertoli cell line. Western blot analysis indicated testosterone-induced AR translocation to the cell membrane. Data from coimmunoprecipitation indicated that AR is associated with caveolin-1, and testosterone enhanced this association...
2017: International Journal of Endocrinology
https://www.readbyqxmd.com/read/28638916/-different-subtypes-of-estrogen-receptor-%C3%AE-and-related-signal-molecules-in-the-hippocampus-are-associated-with-spatial-cognitive-impairment-of-diabetic-mice
#2
Ming-Rui Zhang, Chao Qu, Jia Sun, Cui Wang, Hong-Yan Li, Ye-Jun Zhang, Bing-Qiang Zhang, Wei Zou
To study the correlation between the spatial cognitive impairment and different subtypes of estrogen receptor α (ERα) of hippocampus in diabetic mice, we used alloxan (intraperitoneal injection) to induce type 1 diabetes in male Kunming mice and compared the spatial cognitive ability of the model mice with that of control mice through Morris water maze test. Meanwhile, using Western blot, we detected the protein expressions of ER-α36, ER-α66, caveolin-1, PKCα, cAMP-response element binding protein 2 (CREB2), and synaptophysin (Syn) in the hippocampus of the mice...
June 25, 2017: Sheng Li Xue Bao: [Acta Physiologica Sinica]
https://www.readbyqxmd.com/read/28637901/caveolin-1-influences-lfa-1-redistribution-upon-tcr-stimulation-in-cd8-t-cells
#3
Jessica G Borger, Vicky L Morrison, Andrew Filby, Celine Garcia, Liisa M Uotila, Fabio Simbari, Susanna C Fagerholm, Rose Zamoyska
TCR stimulation by peptide-MHC complexes on APCs requires precise reorganization of molecules into the area of cellular contact to form an immunological synapse from where T cell signaling is initiated. Caveolin (Cav)1, a widely expressed transmembrane protein, is involved in the regulation of membrane composition, cellular polarity and trafficking, and the organization of signal transduction pathways. The presence of Cav1 protein in T cells was identified only recently, and its function in this context is not well understood...
June 21, 2017: Journal of Immunology: Official Journal of the American Association of Immunologists
https://www.readbyqxmd.com/read/28635361/role-of-licochalcone-a-in-vegf-induced-proliferation-of-human-airway-smooth-muscle-cells-implications-for-asthma
#4
Sung-Ho Kim, Qing-Mei Pei, Ping Jiang, Min Yang, Xue-Jiao Qian, Jiang-Bo Liu
Asthma is a chronic respiratory disease characterized by reversible airway obstruction with persistent airway inflammation and airway remodeling, which is associated with increased airway smooth muscle (ASM) mass. Licochalcone A is the predominant characteristic chalcone in licorice root. We found that licochalcone A inhibited vascular endothelial growth factor (VEGF)-induced ASM cell proliferation and induced cell cycle arrest. Additionally, VEGF-induced ASM cell proliferation was suppressed via inhibition of extracellular signal-regulated kinase 1/2 (ERK1/2) activity, but not that of Akt...
February 2017: Growth Factors
https://www.readbyqxmd.com/read/28614767/changes-in-caveolin-1-caveolin-3-and-vascular-endothelial-growth-factor-expression-and-protein-content-after-botulinum-toxin-a-injection-in-the-right-masseter-muscle-of-dystrophin-deficient-mdx-mice
#5
U U Botzenhart, V Vaal, I Rentzsch, T Gredes, T Gedrange, C Kunert-Keil
Progressive muscle wasting, frequently associated with inflammation, muscle fibre degeneration and fibrosis, is a characteristic of DMD (Duchenne muscular dystrophy). Its most common used animal model, the mdx mouse, however can overcome muscle degeneration by regeneration processes and is for this reason not suitable to answer all scientific questions. The aim of this study was to evaluate the ability of botulinum toxin A (BTX-A) in breaking down muscle regeneration in mdx mice. For this purpose, the right masseter muscle of 100 days old mdx and healthy mice was paralyzed by a single specific intramuscular injection of BTX-A...
April 2017: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/28611342/is-plasma-caveolin-1-level-a-prognostic-biomarker-in-metastatic-pancreatic-cancer
#6
Nebi S Demirci, Mutlu Dogan, Gokmen U Erdem, Sabite Kacar, Turan Turhan, Saadettin Kilickap, Lutfi C Cigirgan, Ertugrul Kayacetin, Yakup Bozkaya, Nurullah Zengin
BACKGROUND/AIMS: To evaluate the prognostic significance of plasma caveolin (CAV)-1 and its association with survival and treatment response rates in metastatic pancreatic cancer (MPC). PATIENTS AND METHODS: Plasma samples were prospectively collected from 41 patients with newly diagnosed MPC. Moreover, plasma samples were collected from 48 patients with chronic pancreatitis and 41 healthy individuals (control groups) for assessing Cav-1 levels. Plasma Cav-1 levels were evaluated at baseline and after three cycles of chemotherapy in the patients with MPC...
May 2017: Saudi Journal of Gastroenterology: Official Journal of the Saudi Gastroenterology Association
https://www.readbyqxmd.com/read/28593998/the-ubiquitin-ligase-znrf1-promotes-caveolin-1-ubiquitination-and-degradation-to-modulate-inflammation
#7
Chih-Yuan Lee, Ting-Yu Lai, Meng-Kun Tsai, Yung-Chi Chang, Yu-Hsin Ho, I-Shing Yu, Tzu-Wen Yeh, Chih-Chang Chou, You-Sheng Lin, Toby Lawrence, Li-Chung Hsu
Caveolin-1 (CAV1), the major constituent of caveolae, plays a pivotal role in various cellular biological functions, including cancer and inflammation. The ubiquitin/proteasomal pathway is known to contribute to the regulation of CAV1 expression, but the ubiquitin ligase responsible for CAV1 protein stability remains unidentified. Here we reveal that E3 ubiquitin ligase ZNRF1 modulates CAV1 protein stability to regulate Toll-like receptor (TLR) 4-triggered immune responses. We demonstrate that ZNRF1 physically interacts with CAV1 in response to lipopolysaccharide and mediates ubiquitination and degradation of CAV1...
June 8, 2017: Nature Communications
https://www.readbyqxmd.com/read/28592633/the-phospho-caveolin-1-scaffolding-domain-dampens-force-fluctuations-in-focal-adhesions-and-promotes-cancer-cell-migration
#8
Fanrui Meng, Sandeep Saxena, Youtao Liu, Bharat Joshi, Timothy H Wong, Jay Shankar, Leonard J Foster, Pascal Bernatchez, Ivan R Nabi
Caveolin-1 (Cav1), a major Src kinase substrate phosphorylated on tyrosine-14 (Y14), contains the highly-conserved membrane-proximal caveolin scaffolding domain (CSD; amino acids 82-101). Here we show, using CSD mutants (F92A/V94A) and membrane-permeable CSD competing peptides, that Src kinase-dependent pY14Cav1 regulation of focal adhesion protein stabilization, focal adhesion tension and cancer cell migration is CSD-dependent. Quantitative proteomic analysis of Cav1-GST (1-101 amino acids) pulldowns showed 6-fold increased binding of vinculin and, to a lesser extent, α-actinin, talin and filamin, to phosphomimetic Cav1Y14D relative to non-phosphorylatable Cav1Y14F...
June 7, 2017: Molecular Biology of the Cell
https://www.readbyqxmd.com/read/28591365/expression-dynamics-of-caveolin-1-in-fibroblasts-of-newborn-rats-with-chronic-lung-disease-and-its-impact-on-lung-fibroblast-proliferation
#9
Xin Wang, Jian-Hua Fu, Xin-Dong Xue
Purpose: To evaluate the changes of caveolin-1 in lung fibroblasts in newborn Wistar rats when exposed to hyperoxic conditions, as well as lung fibroblasts cell cycle. Methods: One hundred newborn Wistar rats were randomly divided (50 rats/group) into experimental and control groups, exposed to hyperoxic conditions or normal air, respectively. The fraction of inspired oxygen (FiO2) in the experimental group was 90%, whereas this value was 21% in the control group...
May 2017: Acta Cirúrgica Brasileira
https://www.readbyqxmd.com/read/28587148/the-role-of-caveolin-1-in-hiv-infection-and-pathogenesis
#10
REVIEW
Ayalew Mergia
Caveolin 1 (Cav-1) is a major component of the caveolae structure and is expressed in a variety of cell types including macrophages, which are susceptible to human immunodeficiency virus (HIV) infection. Caveolae structures are present in abundance in mechanically stressed cells such as endothelial cells and adipocytes. HIV infection induces dysfunction of these cells and promotes pathogenesis. Cav-1 and the caveolae structure are believed to be involved in multiple cellular processes that include signal transduction, lipid regulation, endocytosis, transcytosis, and mechanoprotection...
May 26, 2017: Viruses
https://www.readbyqxmd.com/read/28586379/lamp-2-absence-interferes-with-plasma-membrane-repair-and-decreases-t-cruzi-host-cell-invasion
#11
Natália Fernanda Couto, Dina Pedersane, Luisa Rezende, Patrícia P Dias, Tayanne L Corbani, Lívia C Bentini, Anny C S Oliveira, Ludmila F Kelles, Thiago Castro-Gomes, Luciana O Andrade
Trypanosoma cruzi enters host cells by subverting the mechanism of cell membrane repair. In this process, the parasite induces small injuries in the host cell membrane leading to calcium entry and lysosomal exocytosis, which are followed by compensatory endocytosis events that drive parasites into host cells. We have previously shown that absence of both LAMP-1 and 2, major components of lysosomal membranes, decreases invasion of T. cruzi into host cells, but the mechanism by which they interfere with parasite invasion has not been described...
June 2017: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/28576383/cholesterol-metabolism-and-glaucoma-modulation-of-muller-cell-membrane-organization-by-24s-hydroxycholesterol
#12
Ségolène Gambert, Pierre-Henry Gabrielle, Elodie Masson, Elise Leger-Charnay, Arthur Ferrerro, Arthur Vannier, Clément Gendrault, Méline Lachot, Catherine Creuzot-Garcher, Alain Bron, Stéphane Gregoire, Laurent Leclere, Lucy Martine, Géraldine Lucchi, Caroline Truntzer, Delphine Pecqueur, Lionel Bretillon
Glaucoma is a progressive and irreversible blinding neuropathy that is characterized by the loss of retinal ganglion cells (RGCs). Muller Glial Cell (MGC) activation is induced in retinal gliosis. MGCs are the most numerous glial cells in the retina and one of their roles is to sustain cholesterol homeostasis. 24S-hydroxycholesterol (24S-OHC) is one of the form of cholesterol elimination from the retina and is overexpressed during glaucoma. The objective of this study was to determine whether 24S-OHC triggers MGC membrane dynamics involving lipid rafts and contributes to gliosis at early and late time points...
May 30, 2017: Chemistry and Physics of Lipids
https://www.readbyqxmd.com/read/28561907/clinical-significance-of-epithelial-to-mesenchymal-transition-in-laryngeal-carcinoma-its-role-in-the-different-subsites
#13
Silvia Mezi, Caterina Chiappetta, Raffaella Carletti, Andrea Nardini, Enrico Cortesi, Errico Orsi, Gabriele Piesco, Cira Di Gioia
BACKGROUND: During epithelial-to-mesenchymal transition, cancer cells lose adhesion capacity gaining migratory properties. The role of the process on prognosis has been evaluated in 50 cases of laryngeal carcinoma. METHODS: E-cadherin, N-cadherin, β-catenin, α-catenin, γ-catenin, caveolin-1, and vimentin immunohistochemical expression were evaluated using a double score based on staining intensity and cellular localization. RESULTS: Cytoplasmic E-cadherin and α/γ catenin staining were associated with a decrease in survival, cytoplasmic β-catenin was associated with advanced stage, and N-cadherin and vimentin expression were associated with poor differentiation and tumor relapse...
May 31, 2017: Head & Neck
https://www.readbyqxmd.com/read/28560511/caveolin-1-is-markedly-downregulated-in-patients-with-early-stage-colorectal-cancer
#14
Blanca Torrejón, Ion Cristóbal, Federico Rojo, Jesús García-Foncillas
BACKGROUND: Caveolin-1 (CAV-1), the main scaffold protein in caveolae, is frequently deregulated in human cancer. Of importance, this protein has been described to show tumor suppressor or oncogenic properties depending on the cell type and the stage of the disease. In fact, its role in colorectal cancer (CRC) remains to be fully clarified due to discrepancies in the literature. METHODS: We analyzed CAV-1 by western blot in a set of early-stage CRC patients with paired tumor tissue and normal colonic mucosa available...
May 30, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/28555112/caveolin-1-functional-insights-into-its-role-in-muscarine-and-serotonin-induced-smooth-muscle-constriction-in-murine-airways
#15
Maryam Keshavarz, Heike Schwarz, Petra Hartmann, Silke Wiegand, Melanie Skill, Mike Althaus, Wolfgang Kummer, Gabriela Krasteva-Christ
An increased bronchoconstrictor response is a hallmark in the progression of obstructive airway diseases. Acetylcholine and 5-hydroxytryptamine (5-HT, serotonin) are the major bronchoconstrictors. There is evidence that both cholinergic and serotonergic signaling in airway smooth muscle (ASM) involve caveolae. We hypothesized that caveolin-1 (cav-1), a structural protein of caveolae, plays an important regulatory role in ASM contraction. We analyzed airway contraction in different tracheal segments and extra- and intrapulmonary bronchi in cav-1 deficient (cav-1-/-) and wild-type mice using organ bath recordings and videomorphometry of methyl-beta-cyclodextrin (MCD) treated and non-treated precision-cut lung slices (PCLS)...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28554768/caveolin-1-expression-in-oral-lichen-planus-dysplastic-lesions-and-squamous-cell-carcinoma
#16
Zohreh Jaafari-Ashkavandi, Ehsan Aslani
Caveolin-1(Cav-1), the main part of caveolae structure, is supposed to play a role in pathogenesis of many human tumors. Since oral lichen planus (OLP) is considered as a potential premalignant disease, this study evaluated Cav-1 expression in OLP in comparison with benign hyperkeratosis, dysplastic epithelium and oral squamous cell carcinoma (OSCC), to investigate its possible role in pathogenesis and malignant transformation of OLP. In this cross-sectional retrospective study, immunohistochemical expression of Cav-1 in the epithelial component and stroma was evaluated in 81 samples, including 12 cases of hyperkeratosis, 24 OLP, 22 epithelial dysplasia, and 23 OSCC samples...
March 9, 2017: Pathology, Research and Practice
https://www.readbyqxmd.com/read/28552057/exploitation-of-novel-molecular-targets-to-treat-idiopathic-pulmonary-fibrosis-a-drug-discovery-perspective
#17
Bhuvaneshwar Vaidya, Ruaab Patel, Aaron Muth, Vivek Gupta
BACKGROUND: Idiopathic pulmonary fibrosis (IPF) is the most common fibrosing lung disease and is caused by excessive lung scarring. IPF-associated severe mortality can be attributed to late diagnosis due to its generic symptoms, and more importantly, due to the lack of effective therapies available. Despite extensive research in past decades, lung transplant still remains the most effective treatment for IPF. Though two drugs recently approved by FDA, Pirfenidone and Nintedanib, have shown an ability to reduce the progression of disease...
May 26, 2017: Current Medicinal Chemistry
https://www.readbyqxmd.com/read/28546853/caveolin-1-an-oxidative-stress-related-target-for-cancer-prevention
#18
REVIEW
Shengqi Wang, Neng Wang, Yifeng Zheng, Jin Zhang, Fengxue Zhang, Zhiyu Wang
Aberrant oxidative metabolism is one of the hallmarks of cancer. Reactive species overproduction could promote carcinogenesis via inducing genetic mutations and activating oncogenic pathways, and thus, antioxidant therapy was considered as an important strategy for cancer prevention and treatment. Caveolin-1 (Cav-1), a constituent protein of caveolae, has been shown to mediate tumorigenesis and progression through oxidative stress modulation recently. Reactive species could modulate the expression, degradation, posttranslational modifications, and membrane trafficking of Cav-1, while Cav-1-targeted treatments could scavenge the reactive species...
2017: Oxidative Medicine and Cellular Longevity
https://www.readbyqxmd.com/read/28540174/a-preliminary-study-on-the-interaction-between-asn-gly-arg-ngr-modified-multifunctional-nanoparticles-and-vascular-epithelial-cells
#19
Chunxi Liu, Tingxian Liu, Xiaoyue Yu, Yizhu Gu
Previously developed Asn-Gly-Arg (NGR) peptide-modified multifunctional poly(ethyleneimine)-poly(ethylene glycol) (PEI-PEG)-based nanoparticles (TPIC) have been considered to be promising carriers for the co-delivery of DNA and doxorubicin (DOX). As a continued effort, the aim of the present study was to further evaluate the interaction between TPIC and human umbilical vein endothelial cells (HUVEC) to better understand the cellular entry mechanism. In the present investigation, experiments relevant to co-localization, endocytosis inhibitors and factors influencing the internalization were performed...
May 2017: Acta Pharmaceutica Sinica. B
https://www.readbyqxmd.com/read/28537760/caveolin-1-autophagy-pathway-mediated-cardiomyocyte-hypertrophy-induced-by-apelin-13
#20
Di Wu, Feng Xie, Ling Xiao, Fen Feng, Shifang Huang, Lu He, Meiqing Liu, Qun Zhou, Lanfang Li, Linxi Chen
Apelin, an endogenous ligand for apelin receptor (APJ), is reported to be involved in cardiomyocyte hypertrophy. In this study, we explored the mechanism of cardiomyocyte hypertrophy induced by apelin-13/APJ system. Left ventricular hypertrophy (LVH) rat model was established by constricting the abdominal aorta. Western blots were used for protein expression in LVH rats and cultured H9c2 cardiomyocytes. Transmission electron microscopy (TEM) was used to monitor morphological features of cells. In addition, the diameter and volume of H9c2 cells were detected by Scepter™ Handheld Automated Cell Counter...
May 24, 2017: DNA and Cell Biology
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